Concentration Of Bifidobacteria Research Articles

Diversity Analysis of Intestinal Bifidobacteria in the Hohhot Population.

(1) Background: Bifidobacterium plays a pivotal role within the gut microbiota, significantly affecting host health through its abundance and composition in the intestine. Factors such as age, gender, and living environment exert considerable influence on the gut microbiota, yet scant attention has been directed towards understanding the specific effects of these factors on the Bifidobacterium population. Therefore, this study focused on 98 adult fecal samples to conduct absolute and relative quantitative analyses of bifidobacteria. (2) Methods: Using droplet digital PCR and the PacBio Sequel II sequencing platform, this study sought to determine the influence of various factors, including living environment, age, and BMI, on the absolute content and biodiversity of intestinal bifidobacteria. (3) Results: Quantitative results indicated that the bifidobacteria content in the intestinal tract ranged from 106 to 109 CFU/g. Notably, the number of bifidobacteria in the intestinal tract of the school population surpassed that of the off-campus population significantly (p = 0.003). Additionally, the group of young people exhibited a significantly higher count of bifidobacteria than the middle-aged and elderly groups (p = 0.041). The normal-weight group displayed a significantly higher bifidobacteria count than the obese group (p = 0.027). Further analysis of the relative abundance of bifidobacteria under different influencing factors revealed that the living environment emerged as the primary factor affecting the intestinal bifidobacteria structure (p = 0.046, R2 = 2.411). Moreover, the diversity of bifidobacteria in the intestinal tract of college students surpassed that in the out-of-school population (p = 0.034). This was characterized by a notable increase in 11 strains, including B. longum, B. bifidum, and B. pseudolongum, in the intestinal tract of college students, forming a more intricate intestinal bifidobacteria interaction network. (4) Conclusions: In summary, this study elucidated the principal factors affecting intestinal bifidobacteria and delineated their characteristics of intestinal bifidobacteria in diverse populations. By enriching the theory surrounding gut microbiota and health, this study provides essential data support for further investigations into the intricate dynamics of the gut microbiota.

Can probiotics play a role in Helicobacter pylori (H. Pylori) eradication?

BackgroundH. Pylori is one of the commonest infectious diseases worldwide. In recent years, PPI-based triple therapy has been described to be losing its efficacy against H. pylori due to high rates of antibiotic resistance, antibiotics-associated side effects, and low compliance. Probiotics are suggested to improve the H. pylori eradication rate when added to H pylori therapy. Probiotics have anti-inflammatory and anti-oxidative mechanisms that may improve bowel microecology and interact with the microbial flora of the gastrointestinal tract to produce a beneficial effect in H Pylori eradication. Probiotics may be also responsible for the reduction of the adverse effects related to H. pylori therapy that may result in treatment failure.Aim of the workIn our study, we assessed the role of probiotics in improving the H. Pylori eradication rate and reducing side effects after antibiotic-based therapy.Patients and methodOne hundred fifty-nine patients positive for H. pylori stool antigen and had never received previously H. pylori eradication therapy, were included in the study, 59 patients received triple therapy alone (Standard group) and 100 patients received triple therapy and probiotics (study group). One hundred fifty patients completed the treatment. Quantification of Lactobacilli and Bifidobacteria concentration in stool was done by PCR before and after therapy. Eradication of H. pylori was assessed in each group by H. pylori stool antigen after 4 weeks of finishing therapy.ResultsH Pylori eradication rate was higher in patients who received probiotics with standard therapy compared to those who received standard therapy alone. The improvement in the eradication rate was statistically significant when probiotics were received after standard therapy (81.04% versus 71.19%, P-Value 0.021). Short-term diarrhea after antibiotics therapy was significantly lower in patients who received probiotics especially when given before antibiotic therapy (7.50% versus 25.50%, P-value 0.0001). Probiotics may play a role to restore gut dysbiosis as evidenced by stool PCR for Lactobacilli and Bifidobacteria before and after therapy.ConclusionProbiotics have a beneficial role to improve the eradication rate of H. pylori, particularly when given after standard therapy. Adding probiotics was associated as well with less diarrhea as a side effect of antibiotic therapy.Trial registrationThe trial has been registered on the Pan African Clinical Trial Register website, No of registration, PACTR202304859303467. Registered 24 April 2023 - Retrospectively registered, https://pactr.samrc.ac.za/TrialDisplay.aspx?TrialID=25434.

RELATIONSHIP BETWEEN THE ACNE CLINICAL COURSE AND SEVERITY AND THE STATE OF MICROBIOTA OF THE SKIN AND LARGE INTESTINE

A high incidence of acne, tendency to its chronic course with the formation of resistance to treatment and frequent development of deep forms determine an important medical and social significance of the problem.
 Aim. To study and evaluate the degree of changes in the microbiocenosis of the skin and large intestine in patients with acne, depending on their clinical course.
 Materials and Methods. We examined 85 patients with acne, aged 18 to 45 years, 49 (57.65±5.36%) women, 36 (42.35±5.36%) men and 35 apparently healthy persons who made up the control group. The composition of microbiota of the skin and large intestine was examined using a bacteriological method.
 Results and Discussion. It was found that there is a significantly lower content of bifidobacteria and lactobacilli, bacterioids and total E. coli count in the large intestine in patients with acne associated with a higher amount of E. coli with enzyme properties, conditionally pathogenic enterobacteria, enterococci and fungi of the genus Candida. When using Friedman's non-parametric analysis of variance, it was found that there is a statistically significant difference between the frequency of detection of normocenosis and the stage of the large intestinal dysbiosis and the development of clinical forms of acne. At that, normocenosis was detected more often in patients with comedonal acne, while papular and nodular acne occurred more often in patients with manifestations of different stages of dysbiosis. An increase in seeding with associations of the alpha-hemolytic streptococcus + Staphylococcus haemolyticus + Micrococcus, beta-hemolytic streptococcus + Staphylococcus aureus + E.Coli + Candida albicans and a significant increase in the growth of alpha-hemolytic streptococcus, Staphylococcus haemoliticus and Staphylococcus aureus were found in the microbiocenosis of the skin in patients with acne. At that, all of the above microorganisms were not cultured in the patients of the control group.
 Conclusion. The qualitative and quantitative changes in the parameters of microbiocenosis of the skin and large intestine, which depend on the clinical course of dermatosis, were found in the examined patients with acne. This indicates the need for additional examination of such patients with the aim of prescribing a pathogenetically substantiated therapy.

Potential Effects of Prebiotics on Gastrointestinal and Immunological Modulation in the Feeding of Healthy Dogs: A Review

One of the most studied functional foods in dog feed today is the prebiotic. Prebiotics are known for their modulating effects on the intestinal microbiota, fecal characteristics, and the immune system, which promotes beneficial effects to the host. However, with the diversity of prebiotics in the pet market, there are discussions around which prebiotics to use to stimulate these positive effects. In this case, the objective of this review was to demonstrate the main effects of different prebiotics on the feeding of healthy dogs. Platforms such as Embase, PubMed, and Mendeley were accessed to plot all scientific articles in vivo that reported prebiotics to feed adult or senior dogs. After excluding duplicate articles and without the evaluated criteria, we obtained a total of 36 articles. Our results demonstrated the diversity and concentrations of prebiotics in the feeding of healthy adult and senior dogs. The effects of prebiotics differ according to source, concentration, and length of the supplementation period. Several beneficial effects of different prebiotics have been observed in dogs, such as increased fecal Lactobacilli and Bifidobacteria concentrations and decreased fecal Clostridium perfringens and Escherichia coli concentrations, increased short chain fatty acids concentrations, decreased colonic ammonia absorption, and immunomodulatory effects, such as improved humoral immune response and increased phagocytic index. Galactooligosaccharides, fructooligosaccharides, mannanoligosaccharides, yeast cell wall, inulin, and beta-glucans were the most studied prebiotics, which showed potentially promising effects. This is a review that brings the importance and the modulating effects of prebiotics in the feeding of healthy dogs; the effects help the gastrointestinal tract and the immune system.

The interaction of synbiotic of the environment and the endoecosystem as one of the mechanisms of action of balneotherapy

Introduction and aim. Drinking mineral waters are one of the environmental factors that affect the condition of the human body. Of particular interest are therapeutic waters of the Naftussya type, which contain autochthonous microbes and organic oil-like substances and can be considered as a kind of ecosystem. On the other hand, gastrointestinal tract also is an ecosystem that associates a resident microbiota and cells of various phenotypes lining the epithelial wall. We assumed that one of the mechanisms of the therapeutic effect of Naftussya water is the interaction of external and internal ecosystems. This article is the first in a series in support of the hypothesis. Material and methods. The object of clinical-physiological observation were residents of the city of Truskavets’ (21 men aged 24-67 years and 8 women 33-76 years) with chronic pyelonephritis in remission. The objects of study: leukocyturia, bacteriuria, components of microbiota, phagocytosis function of neutrophils, leukocytary adaptation index, plasma and urine electrolytes and nitrogenous metabolites. Results. The weekly use of bioactive Naftussya water from the Opaka deposit causes a favorable normalizing effect on the stool microbiota: it increases the reduced content of Bifidobacteria and Lactobacilli, instead it reduces the increased content of pathogenic strains of Escherichia coli, as well as Klebsiela and Proteus. Reduction of dysbacteriosis is accompanied by an increase in the reduced bactericidal capacity of blood neutrophils against E. coli and Staphylococcus aureus, and reduction of bacteriuria and leukocyturia. At the same time, the elevated level of creatinine in the plasma decreases, instead, the decreased levels of sodium and chloride increase. As expected, the daily diuresis and excretion of urea, creatinine, phosphates, calcium, magnesium and chloride increases, but not sodium and uric acid, the concentrations of which in the urine decrease. The described physiologically beneficial effects are interpreted as adaptogenic, which is confirmed by an increase in the reduced leukocyte adaptation index. Conclusion. The healing effect of Naftussya bioactive water is the result of the interaction of external and internal ecosystems. The next article will consider the role of the nervous and endocrine systems in this interaction.

Intestinal microbiocenosis and fodder digestibility in broiler chickens when using probiotics

Abstract. Research objective was to study the intestinal microbiocenosis in broiler chickens. Laboratory test was conducted at Research and Development Center for Agriculture of the North-Western Branch of Tyumen Research Center of SB RAS. Methods. Cobb 500 chickens breed was used. The main part of experiment began at the age of 14 days. By this time, chickens had reached an average body weight of 365 grams. The control group of chickens was fed basic diet, consisting of total mixed ration fodder and pure water. Chickens of the 1st experimental group during the main stage of experiment were fed with “Vetom 2” probiotic additive in drinking water at 50 mg / 1 kg of poultry weight, whereas chickens of the 2nd experimental group were fed “Lactobifadol” added to their fodder at the rate of 0.2 g per 1 kg of poultry weight. Research results have showed that prior to feeding probiotic formulations no pathogenic microflora was observed in the microbiocenosis of the droppings of broiler chickens. Conditionally pathogenic bacteria, such as Proteus mirabilis, Klebsiella oxytoca, Klebsiella pneumoniae, Staphylococcus aureus were present. Bacillis spp. was present in all of the samples. After feeding the formulations, no pathogenic microflora was detected in the droppings of chickens in experiment groups. Conditionally pathogenic bacteria Proteus mirabilis were present in the droppings of control group chickens, the 1st experimental group, 2nd experimental group. Concentrations of Bifidobacteria and Lactobacteria in chickens’ droppings fed with “Lactobifadol” were significantly higher than in the rest of the groups. Bacillus spp. was present in all samples of the 1st experimental group fed with “Vetom 2”. It was also present in the droppings of chickens in other groups. Scientific novelty. Laboratory experiment involving broiler chickens aimed at researching intestinal microbiocenosis and its effect on digestibility of mixed fodder was conducted in Northern Trans-Urals conditions for the first time.

Dietary Fructooligosaccharide, Xylooligosaccharide and Gum Arabic Have Variable Effects on Cecal and Colonic Microbiota and Epithelial Cell Proliferation in Mice and Rats

Two experiments were conducted to determine if supplementing soluble fiber (fructooligosaccharide, xylooligosaccharide or gum arabic) to a semi-elemental diet would beneficially change cecal and colonic microbiota populations and enhance epithelial cell proliferation. Experiments 1 and 2 used identical dietary regimens; mice and rats were given free access to a powdered semi-elemental diet. Animals were assigned to one of the four following treatment groups: control, no supplemental dietary fiber, fructooligosaccharide, xylooligosaccharide and gum arabic. Dietary fiber was supplied via drinking water at 30 g/L. In Experiment 1 populations of Bifidobacteria and total anaerobic flora were enumerated from the contents of the cecum and colon of weanling mice. Consumption of fructooligosaccharide increased (P < 0.05) the concentrations of Bifidobacteria and the ratio of Bifidobacteria to total anaerobic flora. In Experiment 2 tissue from the cecum and distal colon of weanling rats was examined for morphological changes of the mucosa. Consumption of xylooligosaccharide increased (P < 0.05) cecal crypt depth and labeling index relative to the other three treatments. Consumption of gum arabic and the control diet increased (P < 0.01) cecal proliferation zone. Consumption of xylooligosaccharide and the control diet increased (P < 0.01) cecal cell density (number of cells in a vertical-half of the crypt). Distal colonic crypt depth was greatest (P < 0.05) in controls and rats fed fructooligosaccharide, intermediate in those fed gum arabic, and smallest in those fed xylooligosaccharide. These results suggest that fructooligosaccharide effectively stimulates growth of Bifidobacteria and xylooligosaccharide supports a modest enhancement of cecal epithelial cell proliferation.

Candida albicans adhesion on buccal epitheliocytes as an indicator of microbiota homeostatic balance in children with chronic gastroduodenitis

Background. Recently, the incidence of mycoses in patients with a gastroenterological profile has grown due to an increase in the intensity of the impact on the human body of external factors that cause disturbances in the antimycotic defense system.&#x0D; Aim. To study the adhesion of Candida albicans on buccal epitheliocytes in children with chronic gastroduodenitis.&#x0D; Material and methods. 96 children (mean age 12.431.24 years) with recurrent respiratory diseases with morphologically proven chronic gastroduodenitis associated with Helicobacter pylori were examined. The adhesion of Candida, contamination of buccal epithelial cells with bacteria were studied. All children underwent paraclinical studies, instrumental methods of research, consultations of specialists were also prescribed. In the study of the adhesive reaction of C. albicans on buccal epitheliocytes, a Candida strain from the collection of the Federal Budgetary Institution of Science Nizhny Novgorod Research Institute of Hygiene and Occupational Pathology was used. 100 epitheliocytes were studied, the result was evaluated by the number of Candida in terms of 1 epitheliocyte. Registration of artificial colonization of buccal epithelial cells was carried out according to the method of D. Goldman and E. Goetzl (2003) modified by A.N. Mayansky. The children were divided into 2 groups: the main one the detected growth of C. albicans over 1000 CFU/g, and the comparative one the absence of excess growth of C. albicans. Statistical processing included the determination of the correlation coefficient, the arithmetic mean (M) and its standard error (m), differences in indicators according to Student's criteria (the level at p 0.05 was considered statistically significant).&#x0D; Results. Harmonious proportional development was observed in 55.21% of children, microbiota imbalance was noted: bloating and rumbling along the colon, (p=0.0087), unstable stool (p=0.0241) and constipation (p=0.6092). The spectrum of comorbid pathology revealed the presence of allergic diseases (p=0.0048), up to 10 episodes of acute respiratory viral infection (p=0.1702), more than 10 episodes of acute respiratory viral infection (p=0.0105), adenoid vegetations (p=0.531), chronic pyelonephritis in the stage of clinical and laboratory remission (p=0.0216). Assessment of the intestinal microbial landscape showed a significant decrease in the content of bifidobacteria in the main group (p=0.0482), and lactobacilli were comparable in both groups (p=0.0839). In the comparison group, in 88.63% of cases, the indices of adhesion of C. albicans on buccal epitheliocytes were 6.370.46, in the main group 11.860.74 (p=0.0362). A direct relationship between the parameters of artificial colonization of buccal epitheliocytes and the degree of microbiological changes in the intestine was found (r=0.58, p=0.0097).&#x0D; Conclusion. The study of adhesion of Candida albicans on buccal epitheliocytes in children with chronic gastroduodenitis revealed a unidirectional shift in the quantitative content of the obligate oral and intestinal microbiota, which can be used as a screening for the homeostatic balance of the microbiota.

Effect of probiotics on the intestinal microbiota of patients with giardiasis and ascariasis.

Recently, many cases of mixed invasion by Giardia and ascarids have been registered. Gastrointestinal lesions in patients are often accompanied by dysbiotic changes. The aim was to study the effect of probiotics containing Saccharomyces bouvardias CNCM I-745 in the complex therapy of patients with giardiasis, ascariasis, and mixed invasion. 90 patients with giardiasis, ascariasis and mixed invasion were divided into 3 groups, depending on the type of invasion. Each group was divided into two subgroups, depending on the treatment (basic treatment and treatment with probiotics). When studying the state of the intestinal microbiota, the following changes were detected in all patients before treatment. The content of Bifidobacterium spp., Lactobacillus spp., Enterococcus spp. and the total content of E. coli was reduced. At the same time, there was an increase in the content of Peptostreptococcus spp., Bacteroides spp., E. coli with low enzymatic properties, hemolytic E. coli, opportunistic Enterobacteriaceae spp., Candida spp. and Staphylococcus spp. Under the influence of treatment, the subgroup with probiotics addition to the basic treatment, was more effective for all types of invasions. The use of probiotics containing Saccharomyces bouvardias CNCM I-745 in the complex therapy of patients with mixed invasion of giardiasis and ascariasis increased treatment efficiency following a significant improvement in intestinal microbiota.

Impact of fermentable fiber, xylo-oligosaccharides and xylanase on laying hen productive performance and nutrient utilization

This study evaluated the impact of feeding xylo-oligosaccharides (XOS), fermentable fiber in the form of wheat bran (WB), and xylanase (XYL) on laying hen productive performance and nutrient digestibility. The hypothesis was that the WB would provide the microbiota in the hindgut with fermentable dietary xylan, and the XOS and XYL would further upregulate xylan fermentation pathways, resulting in improved nutrient utilization. Isa Brown hens (n=96) were obtained at 39 wk of age. They were fed 12 dietary treatments, 8 hens per treatment, for 56 d. A commercial laying hen ration was fed, and for half of the treatments 10% of this ration was directly replaced with WB. The diets were then supplemented with either 1) no supplements; 2) XOS 50 g/t; 3) XOS 2000 g/t; 4) XYL (16,000 BXU/kg); 5) XYL+XOS 50 g/t, or 6) XYL+XOS 2,000 g/t. Hen performance and egg quality were measured every 14 d. On d56, ileum digesta samples were collected for determination of starch, nonstarch polysaccharide (NSP), XOS, protein, energy, and starch digestibility. Ceca digesta samples were also collected for analysis of XOS, short chain fatty acid (SCFA), xylanase and cellulase activity and microbial counts. Feeding 2,000 g/t XOS increased ileal protein digestibility. Combined 2,000 g/t XOS and XYL increased cecal Bifidobacteria concentration. This combination also increased cecal xylanase activity in birds fed the control diet. Cecal cellulase activity was improved by feeding WB, XYL, and 2,000 g/t XOS. XYL increased cecal lactate production. Feeding 2,000 g/t XOS with WB increased insoluble NSP degradability and shell breaking strength at d56. In summary, supplementing laying hen diets with fermentable fiber, XYL and XOS increases utilization of dietary xylan, improving nutrient utilization, performance, and gastrointestinal health.

THE ROLE OF PROBIOTICS IN THE TREATMENT OF INTESTINAL DYSBIOSIS IN PATIENTS WITH LAMBLIOSIS AND ASCARIDOSIS

Parasitic diseases remain an important problem today. Recently, many cases of combined invasion have been registered. Mixed invasion by Giardia and roundworms is the most common in Ukraine. The clinical picture of the disease is characterized by damage to various organs and systems, but most often in patients the manifestations relate to the primary site of parasitism of pathogens - the gastrointestinal tract, which is often accompanied by disruption of the intestinal microflora. The aim was to study the effect of probiotics containing bicarbonate saccharomycetes in the complex therapy of patients with giardiasis, ascariasis, and combined invasion. We examined 90 patients with giardiasis, ascariasis, and combined invasion, divided into 3 groups, depending on the type of invasion, each of which is divided into two subgroups, depending on the treatment (basic treatment and with the addition of probiotics). It was administered orally 1 capsule 2 times a day for 14 days. 1 capsule contains 250 mg of saccharomycetes and excipients. The control group consisted of 20 healthy individuals. The state of the intestinal microflora was determined using a classical microbiological study of feces to determine the population level of the microflora according to VA Znamensky. The research was performed twice: before treatment and 14 days after treatment. The diagnosis of giardiasis and ascariasis was confirmed by detection of the pathogen in the feces by parasitoscopy of feces. When studying the state of the intestinal microflora, it was found that all patients had the following changes before treatment. The content of bifidobacteria, lactobacilli, enterococci and the total content of E. coli was reduced. At the same time, there was an increase in the content of peptococci, bacteroids, Escherichia coli with weakly enzymatic properties, haemolytic Escherichia coli, fungi of the genus Candida and staphylococci. After the basic treatment, some positive changes were observed in all groups of patients, but the content of autochthonous flora still decreased, the presence of pathogenic bacteria (staphylococci) and fungal flora was noted. The content of bifidobacteria was slightly reduced. The quantitative composition of lactobacilli was higher than before treatment. Patients had a reduced amount of bacteroids, total Escherichia coli, although its content was higher than before treatment. An elevated level of Escherichia coli with weak enzymatic properties was noted. Hemolytic Escherichia coli was present, as well as the number of enterococci. Fungi of the genus Candida were available also. In the 3b group of patients there were more significant signs of improvement in the microflora.&#x0D; After the inclusion in the treatment complex of probiotics containing saccharomycetes of billard, according to the results of bacteriological research, there was a significant positive dynamic of the intestinal microflora. The content of bifidobacteria was significantly higher compared to the other two groups. The quantitative composition of lactobacilli was slightly reduced. The amount of bacteroids was normalized. The total content of Escherichia coli increased, there was a decrease in the content of Escherichia coli with weak enzymatic properties. In addition, the presence of haemolytic Escherichia coli was detected in only one patient. Almost complete normalization of the level of enterococci was observed. From the fungal flora, the level of fungi of the genus Candida was minimal, comparing similar results of other groups.

The effect of probiotic use on ABO antibody titers.

The use of probiotics brings numerous benefits to the immune system, including an increase in antibody production. The development of ABO antibodies may occur naturally due to the bacteria of the intestinal microbiota. However, high titers of ABO antibodies can lead to hemolytic disease of the fetus and newborn and can cause immune transfusion reactions. In this context, this study aimed to evaluate the effect of probiotic consumption on ABO antibody titers in humans. ABO blood group, ABO antibody titer, and fecal pH and Bifidobacteria concentration were determined for 126 healthy individuals before and after daily consumption of yogurt containing Lactobacillus acidophilus and Bifidobacterium lactis over a 1-month period. No changes in fecal pH were observed after probiotic consumption, regardless of ABO blood group. There was, however, an increase in the fecal concentration of Bifidobacteria in individuals with blood group A but not for those with group B or O. A decrease in the titer of anti-B was observed, despite the increase in the concentration of Bifidobacteria in feces being unrelated to fecal pH, in blood group A individuals. Our study, therefore, sought to understand the relationship between probiotics and the antibody titer of the ABO blood system. Despite our findings, further human studies are needed with other probiotic strains and molecular analyses of the intestinal microbiota.

Improving sorghum digestion in broilers by targeting fermentation of xylan.

This study was to examine if it is possible to accelerate sorghum digestion in broiler chickens by targeting fermentation of the xylan. Cobb 500 broilers (n = 960, 80 birds per treatment) were fed 12 sorghum-soybean meal-based dietary treatments fed as 3 phases (starter d 0 to 12, grower d 13 to 23, finisher d 24 to 35), with 8 replicate pens of 10 birds per treatment. For half of the treatments (n = 6), 10% of the sorghum in the diet was directly replaced with 10% wheat bran, as a source of fermentable fibre. The diets were supplemented with either 0, 50 or 2,000 mg/kg xylo-oligosaccharides (XOS), with or without xylanase application. Body weight gain (BWG), feed intake (FI) and feed conversion corrected for mortality (cFCR) was determined at d 0 to 35, and male and female body weight were measured on d 35. On d 35, ileum and caeca samples were collected from 2 birds per pen, for determination of caecal cellulase and xylanase activity, microbiota composition and short chain fatty acid (SCFA) concentration, and ileal XOS concentration. Supplementation with 2,000 mg/kg XOS caused increased BWG at d 0 to 35 (P = 0.007) and enhanced caecal propionic, valeric and succinic acid concentration (P < 0.05). Wheat bran increased FI (P = 0.018) and BWG (P = 0.016), as well as caecal Bifidobacteria concentration (P < 0.001). Ileal XOS concentration was greatest when feeding combined wheat bran, 2,000 mg/kg XOS, and xylanase, resulting in increased caecal total SCFA, acetic acid and butyric acid concentration, and xylanase and cellulase activity (P < 0.05). Results from this study present that feed efficiency in birds fed sorghum-based diets is improved as a consequence of supplementing with fermentable fibre, xylanase and XOS.

Peculiarities of formation of intestinal bacteriocenoses in calves in different technological periods of raising

The article presents data on the peculiarities of the bacteriocenoses formation in calves in different technological periods of raising and different animal housing systems. It has been shown that in calves up to three days of age the quantitative content of microorganisms is minimal. The amount of bifidobacteria and lactobacilli does not exceed 3 log CFU/g. In calves older than three days of age, their level increased, and depending on the method of housing, ranged from 5 log CFU/g (in calves with group housing) to 8 log CFU/g (in calves with individual housing). The microbiocenosis in calves with an individual housing system was characterized by a more constant and less variable composition of Escherichia coli (4 ± 0.8×102 CFU/g) and bacillary spore microflora (3 ± 1.3×101 CFU/g). In case of the group housing of calves, the content of bifidobacteria was lower (20.9 ± 5.5×106 CFU/g), and the content of E. coli and saprophytic microorganisms of the genus Bacillus was high and more variable (30 ± 20.4×105 CFU/g and 31 ± 11.3×102 CFU/g respectively). In calves older than fifteen days of age, the amount of lactobacilli ranged from 6 to 8 log CFU/g, and the number of bifidobacteria ranged from 7 to 10 log CFU/g. Thus, to exclude dysbiotic disorders, it is necessary to maintain the optimal composition and quantitative level of the main microflora of the intestinal tract, in particular the number of lactobacilli should be at least 6 log CFU/g, bifidobacteria at least 7 log CFU/g, E. coli no more than 7 log CFU/g (except for calves under three days of age)

Dependence of the state of the large intestine parietal microflora on the activity of Helicobacter pylori associated chronic gastritis

Introduction. The aim of the study was to detect the dependence of the composition of the parietal microflora of the colon on the activity of Helicobacter pylori-associated chronic gastritis and the degree of Helicobacter pylori contamination of the gastric mucosa. Materials and methods. The study was carried out on 50 patients aged 24 to 72 years, who were diagnosed with HP-associated chronic gastritis in the phase of exacerbation based on the results of FEGDS and histological examination of biopsies of the mucous membrane of the antrum of the stomach in combination with a rapid urease test. A series of dilutions 10¹-10⁹ was prepared from a homogenized biopsy specimen of the mucous membrane of the sigmoid colon in 0.1 ml of isotonic sodium chloride solution, and 0.1 ml of a solution of the corresponding dilution was inoculated onto the surface of the nutrient medium. The study of mucosal microflora was carried out by means of bacteriological examination of biopsies of the mucous membrane of the sigmoid and cecum. The degree of H. pylori contamination of the gastric mucosa was assessed in the course of histological examination by a semi-quantitative method: low degree of contamination — up to 20 microbial bodies, average — 20-50 microbial bodies, strong — over 50 microbial bodies in the field of view. Results. The study demonstrated that the indicators of the average concentrations of bifidobacteria, lactobacilli and typical strains of E. coli progressively decreased with the transition to a higher degree of HP infection. This tendency was maximum in relation to bifidobacteria — 6.1-1.57-1.09 x 10⁸ CFU/g, with a difference between the maximum (I degree) and minimum (III degree) 5.59 times. A similar relationship, but much less pronounced, was observed for Lactobacterium spp. and E. coli. As the severity of HP infiltration of the gastric mucosa increases, there is a decrease in the concentration of the above microorganisms in the parietal mucin - the correlation coefficient is r = -0.74. Discussion. Since the mucous microflora is more stable and functionally significant than the cavity microflora, the data obtained allow us to consider Helicobacter pylori as an etiological factor of colonic dysbiosis. Conclusion. The probability of excessive growth of conditionally pathogenic fraction of intestinal parietal microflora has a direct dependence on the severity of Helicobacter pylori infestation, being maximum at degree III contamination. Content of bifidobacteria, lactobacilli and typical E. coli strains in the intestinal biotope of the large intestine is inversely related to the degree of histological activity of HP-associated gastritis.

Особливості мікробіоценозу товстої кишки та рівня фекального кальпротектину у хворих на хронічні запальні захворювання кишечника залежно від нутритивного статусу

Стаття присвячена актуальній проблемі — стану мікрофлори товстої кишки та рівня фекального кальпротектину у хворих на хронічні запальні захворювання кишечника з різним нутритивним статусом. Проведено обстеження 76 пацієнтів із хронічними запальними захворюваннями кишечника, серед яких 28 хворих на хворобу Крона та 48 — на неспецифічний виразковий коліт. Проаналізовано отримані дані залежно від нозології та нутритивного статусу. Встановлено, що серед хворих досліджених груп переважали пацієнти з субкомпенсованою формою дисбіозу. Зниження концентрації біфідобактерій у вмісті товстої кишки у хворих ІІІ групи виявляли найчастіше — у 78,9 % випадків. Дефіцит лактобактерій найчастіше спостерігався у хворих ІІ групи (92,3 %). Вміст кальпротектину був суттєво підвищеним у 84,2 % пацієнтів, позитивно корелював із ступенем тяжкості перебігу захворювання і не залежав від їх нутритивного статусу.

Возрастные особенности нарушений микробиоценоза кишечника у пациентов с неспецифическим язвенным колитом и болезнью Крона

Актуальность. Хронические воспалительные заболевания кишечника (ХВЗК), а именно неспецифический язвенный колит (НЯК) и болезнь Крона (БК), остаются одной из наиболее сложных и актуальных проблем гастроэнтерологии во всем мире. В настоящее время остается недостаточно изученным вопрос о влиянии микрофлоры кишечника и ее изменений на развитие и прогрессирование воспалительного процесса. Однако наиболее доминирующая этиологическая гипотеза говорит о том, что ХВЗК являются результатом аномального иммунного ответа на измененную микробиоту кишечника под воздействием факторов окружающей среды или патогенных микроорганизмов у генетически склонного хозяина. Изменения микробиоты при ХВЗК общепризнаны, но зависимость этих изменений от возраста пациентов еще нуждается в исследовании. Цель исследования: изучить особенности дисбиоза кишечника и частоты синдрома избыточного бактериального роста (СИБР) у пациентов с ХВЗК в зависимости от нозологии и возраста. Материалы и методы. Обследовано 120 пациентов с ХВЗК в возрасте от 19 до 79 лет, в среднем (43,90 ± 1,40) года; среди них 83 больных НЯК, 37 — БК. Все больные были разделены на группы в зависимости от нозологии и возраста. Больным были проведены водородный дыхательный тест для выявления СИБР, бактериологическое исследование кала и хроматография короткоцепочечных жирных кислот (КЖК) в копрофильтратах. Результаты. Установлены наличие глубоких изменений качественного и количественного состава микрофлоры толстой кишки и высокая частота выявления СИБР у пациентов с ХВЗК. Выявлена зависимость изменений состава микрофлоры тонкой и толстой кишки у больных от возраста и нозологии. Снижение концентрации бифидобактерий в содержимом толстого кишечника выявляли чаще всего у пациентов молодого возраста с БК, тогда как снижение количества лактобактерий чаще определялось у больных пожилого возраста в обеих нозологических группах. С возрастом росла частота выявления гемолитических биоваров кишечной палочки, условно-патогенных энтеробактерий и грибов рода Candida. Наблюдались изменения как суммарного общего содержания, так и показателей отдельных КЖК относительно здоровых лиц, что свидетельствовало об угнетении метаболической активности нормальной микрофлоры. Снижение уровней уксусной и масляной кислоты указывало на выраженное угнетение продуцентов этих метаболитов. Выводы. Выявлено, что больные пожилого возраста более склонны к развитию СИБР, снижению концентрации лактобактерий в содержимом толстой кишки, а также увеличению частоты выявления условно-патогенных энтеробактерий и грибов рода Candida. У больных молодого возраста преимущественно выявляется субкомпенсированная форма дисбиоза со снижением концентрации бифидобактерий. С возрастом также наблюдается угнетение продуцентов уксусной и масляной кислоты. Результаты данных исследований предоставят возможность клиницистам более тщательно подбирать терапевтическую тактику, а именно повлияют на выбор препаратов, которые модулируют микробиоту кишечника, с учетом не только нозологической формы, но и возраста пациента.

Характеристика состояния кишечной микрофлоры и содержания короткоцепочечных жирных кислот у больных с синдромом раздраженного кишечника

В статье рассматриваются вопросы, связанные с кишечной микрофлорой и короткоцепочечными жирными кислотами у больных с синдромом раздраженного кишечника. Установлено, что концентрация уксусной, пропионовой, масляной кислот в кале выше у больных с синдромом раздраженного кишечника с диареей по сравнению с больными без диарейного синдрома. У 83,3–88,9 % больных с различными формами синдрома раздраженного кишечника наблюдаются дисбиотические изменения; у пациентов с диарейной формой чаще отмечается пониженное содержание бифидобактерий и, особенно, лактобактерий. Отмечается определенная взаимозависимость между концентрацией короткоцепочечных жирных кислот и содержанием бифидобактерий, лактобактерий, кандидозной и условно-патогенной флоры.

Phage resistance of conditionally pathogenic intestinal microbiota bacteria in children with microbiocenosis disorders

Objective: to study the circulation and prevalence of phage-resistant strains among opportunistic enterobacteria, isolated from children with disorders of intestinal microflora, in relation to domestic preparations of bacteriophages.Materials and methods. A bacteriological study of the fecal microflora of the colon in 970 young children for dysbiosis was carried out. The sensitivity of 720 antibiotic-resistant strains of opportunistic enterobacteriaceae (S. aureus, K. pneumoniae, P. mirabilis and P. vulgaris, P. aeruginosa, E. coli, coagulase-negative staphylococci) isolated from children to domestic mono- and polyvalent drugs was studied (coliprotein, staphylococcal, Pseudomonas aeruginosa, purified Klebsiella pneumonia bacteriophage, “Sextafag”, Intesta bacteriophage). Determination of sensitivity to bacteriophages was carried out by the “sterile spot” method. Antibiotic sensitivity was determined by the disk diffusion method. Statistical processing of the results was carried out using the Microsoft Office Excel 2007 software package.Results. A large percentage of phage-resistant strains with low sensitivity to bacteriophages was revealed among opportunistic bacteria, amounting to 54,2%, with the highest circulation among coagulase-negative staphylococci, Proteus, Klebsiella (more than 50%). A significant spread of intestinal dysbiosis was established in young children (87,5%), characterized by a low content of bifidobacteria and a high level of allocation of opportunistic enterobacteria, including in associations.Conclusion. As a result of the studies, a significant prevalence of phage-resistant strains in children with dysbiosis was revealed, which indicates the need for preliminary determination of their sensitivity to bacteriophages in order to resolve the issue of their possible inclusion in the intestinal microflora correction system.

Optimization of treatment and prognosis of acute and chronic eczema in patients with manifestations of intestinal dysbiosis

Objective — the purpose of the work is to increase the effectiveness of treatment of patients with acute and chronic eczema by developing effective comprehensive corrective therapy based on the study of the immune defense system.&#x0D; Materials and methods. 47 patients with acute and chronic eczema before and after treatment were selected for the study. To assess the effectiveness of therapy in these patients, we evaluated the data of biochemical studies, indicators of cellular and humoral immunity, as well as the degree of changes in indicators of the microbiota of the colon cavity.&#x0D; Results and discussion. The most informative indicators of cellular and humoral immunity of patients with acute and chronic eczema in the acute stage, accompanied by manifestations of intestinal dysbiosis are determined: CD3+-lympho­cytes, IFN-γ, IL-4, IL-6 and IgA. The monitoring of these indicators is necessary and sufficient for controlling the effectiveness of prevention and treatment of this group of patients.According to the results of bacteriological examination of feces in all patients, the presence of dysbiosis of the colon of I—IV degrees was established. Patients with eczema also had a significantly lower content of bifidobacteria and lactobacilli in the colon cavity (by 2.09 and 2.58 times, respectively), bacteroids (by 1.96 times) and the total number of Escherichia coli (by 2.56 times) against the background of a larger number of Escherichia coli with enzymatic properties, opportunistic enterobacteria, enterococci and fungi of the genus Candida (by 1.87, 14.4, 4.20 and 3.22 times, respectively). After the treatment with the addition of pro- and prebiotics of the patients of the main group, the manifestations of dysbiosis of the colon were eliminated, while in the patients of the control group, the manifestations of dysbiosis persisted: lower content of bifidobacteria and lactobacilli in the colon cavity (by 1.82 and 2.32 times, respectively), bacteroids (by 1.2 times) and the total number of Escherichia coli (by 1.48 times) against the background of a bigger number of Escherichia coli with enzymatic properties, opportunistic enterobacteria, enterococci and fungi of genus Candida (by 1.32, 12.3, 3.24 and 2.85 times, respectively).&#x0D; Conclusions. The treatment aimed at normalizing the gastrointestinal tract and increasing the patient’s immunity, has an activating and stimulating effect on the therapeutic treatment complex of a patient with eczema. The addition of pro and prebiotics contributed to a significant reduction in the duration of treatment in patients compared with the indicator in individuals who received only conventional pathogenetic therapy.