Probiotic Lactobacillus Fermentum Research Articles

L-arabinose isomerase from Lactobacillus fermentum C6: Enzymatic characteristics and its recombinant Bacillus subtilis whole cells achieving a significantly increased production of D-tagatose

L-arabinose isomerase (L-AI) is a functional enzyme for the isomerizing of D-galactose to produce D-tagatose. In this study, L-AI-C6-encoding gene from the probiotic Lactobacillus fermentum C6 was cloned and expressed in Bacillus subtilis WB600 for investigating enzymatic characteristics and bioconverting D-tagatose by means of whole-cell catalysis. Results showed that the engineered B. subtilis WB600-pMA5-LAI achieved a maximum specific activity of L-AI-C6 (232.65 ± 15.54 U/mg protein) under cultivation in LB medium at 28 °C for 40 h. The recombinant L-AI-C6 was purified, and enzymatic characteristics test showed its optimum reaction temperature and pH at 60 °C and 8.0, respectively. In addition, L-AI-C6 exhibited good stability within the pH range of 5.5–9.0. By using B. subtilis WB600-pMA5-LAI cells as whole-cell catalyst, the highest D-tagatose yield reached 42.91 ± 0.28 % with D-galactose as substrate, which was 2.41 times that of L. fermentum C6 (17.79 ± 0.11 %). This suggested that the cloning and heterologous expression of L-AI-C6 was an effective strategy for improving D-tagatose conversion by whole-cell catalysis. In brief, the present study demonstrated that the reaction temperature, pH, and stability of L-AI-C6 from L. fermentum C6 meet the demands of industrial application, and the constructed B. subtilis WB600-pMA5-LAI shows promising potential for the whole-cell biotransformation of D-tagatose.

In Vitro Development of Enteric-Coated Tablets of the Probiotic Lactobacillus fermentum LF-G89: A Possible Approach to Intestinal Colonization.

Probiotics must be able to withstand the demanding environment of the gastrointestinal system to adhere to the intestinal epithelium, promoting health benefits. The use of probiotics can prevent or attenuate the effects of dysbiosis that have a deleterious effect on health, promoting anti-inflammatory, immunomodulatory, and antioxidant effects. The aim of the study was to prepare tablets containing Lactobacillus fermentum LF-G89 coated with 20% Acryl-Eze II® or Opadry® enteric polymers. Tablet dissolution was evaluated under acidic and basic pH conditions, and aliquots of the dissolution medium were plated to count the Colony-forming Units (CFU). The free probiotic's tolerance to pH levels of 1.0, 2.0, 3.0, and 4.0, as well as to pepsin, pancreatin, and bile salts, was assessed. The probiotic was released from tablets coated after they withstood the pH 1.2 acid stage for 45 minutes. The release was higher with the Acry-Eze II® polymer in the basic stage. The amount of CFU of free probiotics at pH 1.0 to 4.0 as well as pepsin reduced over time, indicating cell death. Conversely, the CFU over time with pancreatin and bile salts increased, demonstrating the resistance of L. fermentum to these conditions due to hydrolases. Both coating polymers were able to withstand the acid step, likely ensuring the release of the probiotic in the small intestine, promoting colonization. Coating with enteric material is a simple and effective process to increase the survival of probiotics, offering a promising alternative to mitigate the negative effects of the dysbiosis process.

NF-kB Regulation and the Chaperone System Mediate Restorative Effects of the Probiotic Lactobacillus fermentum LF31 in the Small Intestine and Cerebellum of Mice with Ethanol-Induced Damage.

Probiotics are live microorganisms that yield health benefits when consumed, generally by improving or restoring the intestinal flora (microbiota) as part of the muco-microbiotic layer of the bowel. In this work, mice were fed with ethanol alone or in combination with the probiotic Lactobacillus fermentum (L. fermentum) for 12 weeks. The modulation of the NF-κB signaling pathway with the induction of Hsp60, Hsp90, and IkB-α by the probiotic occurred in the jejunum. L. fermentum inhibited IL-6 expression and downregulated TNF-α transcription. NF-κB inactivation concurred with the restoration of the intestinal barrier, which had been damaged by ethanol, via the production of tight junction proteins, ameliorating the ethanol-induced intestinal permeability. The beneficial effect of the probiotic on the intestine was repeated for the cerebellum, in which downregulation of glial inflammation-related markers was observed in the probiotic-fed mice. The data show that L. fermentum exerted anti-inflammatory and cytoprotective effects in both the small intestine and the cerebellum, by suppressing ethanol-induced increased intestinal permeability and curbing neuroinflammation. The results also suggest that L. fermentum could be advantageous, along with the other available means, for treating intestinal diseases caused by stressors associated with inflammation and dysbiosis.

Evaluation of the Survival of Lactobacillus fermentum K73 during the Production of High-Oleic Palm Oil Macroemulsion Powders Using Rotor-Stator Homogenizer and Spray-Drying Technique.

This study aimed to evaluate the survival of the probiotic Lactobacillus fermentum when it is encapsulated in powdered macroemulsions to develop a probiotic product with low water activity. For this purpose, the effect of the rotational speed of the rotor-stator and the spray-drying process was assessed on the microorganism survival and physical properties of probiotic high-oleic palm oil (HOPO) emulsions and powders. Two Box-Behnken experimental designs were carried out: in the first one, for the effect of the macro emulsification process, the numerical factors were the amount of HOPO, the velocity of the rotor-stator, and time, while the factors for the second one, the drying process, were the amount of HOPO, inoculum, and the inlet temperature. It was found that the droplet size (ADS) and polydispersity index (PdI) were influenced by HOPO concentration and time, ζ-potential by HOPO concentration and velocity, and creaming index (CI) by speed and time of homogenization. Additionally, HOPO concentration affected bacterial survival; the viability was between 78-99% after emulsion preparation and 83-107% after seven days. The spray-drying process showed a similar viable cell count before and after the drying process, a reduction between 0.04 and 0.8 Log10 CFUg-1; the moisture varied between 2.4% and 3.7%, values highly acceptable for probiotic products. We concluded that encapsulation of L. fermentum in powdered macroemulsions at the conditions studied is effective in obtaining a functional food from HOPO with optimal physical and probiotic properties according to national legislation (>106 CFU mL-1 or g-1).

Longevity-Associated Core Gut Microbiota Mining and Effect of Mediated Probiotic Combinations on Aging Mice: Case Study of a Long-Lived Population in Guangxi, China.

With an ageing population, healthy longevity is becoming an important scientific concern. The longevity phenomenon is closely related to the intestinal microflora and is highly complicated; it is challenging to identify and define the core gut microbiota associated with longevity. Therefore, in this study, 16S rRNA sequencing data were obtained from a total of 135 faecal samples collected as part of the latest sampling and pre-collection initiative in the Guangxi longevity area, and weighted gene co-expression network analysis (WGCNA) was used to find a mediumpurple3 network module significantly associated with the Guangxi longevity phenomenon. Five core genera, namely, Alistipes, Bacteroides, Blautia, Lachnospiraceae NK4A136 group, and Lactobacillus, were identified via network analysis and random forest (RF) in this module. Two potential probiotic strains, Lactobacillus fermentum and Bacteroides fragilis, were further isolated and screened from the above five core genera, and then combined and used as an intervention in naturally ageing mice. The results show a change in the key longevity gut microbiota in mice toward a healthy longevity state after the intervention. In addition, the results show that the probiotic combination effectively ameliorated anxiety and necrosis of hippocampal neuronal cells in senescent mice, improving their antioxidant capacity and reducing their inflammation levels. In conclusion, this longer-term study provides a new approach to the search for longevity hub microbiota. These results may also provide an important theoretical reference for the healthification of the intestinal microflora in the general population, and even the remodelling of the structure of the longevity-state intestinal microflora.

White pitahaya as a natural additive: potential usage in cosmetic industry

The awareness of some harmful side effects of the chemicals contained in synthetic cosmetics has increased the demand for herbal-based cosmetic products today.
 White pitahaya fruit and peel methanol extracts were prepared to determine their usage potential in the cosmetic industry. Firstly, we investigated their antimicrobial activity against some test microorganisms using the disc diffusion assay. We also determined their minimal inhibition and minimal bactericidal or fungicidal concentrations. Then, we assayed the antimicrobial activity of a commercial cream containing white pitahaya extracts and the probiotic Lactobacillus fermentum MA-7 strain against the test microorganisms. Finally, we measured the sun protection factors of the white pitahaya fruit and peel extracts and the cream with the extracts.
 The white pitahaya fruit and peel extracts exhibited antimicrobial activity against the test microorganisms. The cream formulation containing a pitahaya fruit extract had the highest inhibition zone diameter of 11.25 mm against Escherichia coli O157:H7. The highest sun protection value among the extracts and cream with extracts was determined for peel extract as 6.66 and 23.34, respectively.
 The results indicate that pitahaya fruit and peel extracts have effective antibacterial and antifungal properties, as well as high sun protection factors, and therefore they could be used as natural preservatives in the cosmetic industry.

Lactobacillus fermentum HNU312 alleviated oxidative damage and behavioural abnormalities during brain development in early life induced by chronic lead exposure

Lead exposure is a global public health safety issue that severely disrupts brain development and causes damage to the nervous system in early life. Probiotics and gut microbes have been highlighted for their critical roles in mitigating lead toxicity. However, the underlying mechanisms by which they work yet to be fully explored. Here, we designed a two-stage experiment using the probiotic Lactobacillus fermentum HNU312 (Lf312) to uncover how probiotics alleviate lead toxicity to the brain during early life. First, we explored the tolerance and adsorption of Lf312 to lead in vitro. Second, the adsorption capacity of the strain was determined and confirmed in vivo. The shotgun metagenome sequencing showed lead exposure-induced imbalance and dysfunction of the gut microbiome. In contrast, Lf312 intake significantly modulated the structure of the microbiome, increased the abundance of beneficial bacteria and short-chain fatty acids (SCFAs)-producing bacteria, and upregulated function-related metabolic pathways such as antioxidants. Notably, Lf312 enhanced the integrity of the blood-brain barrier by increasing the levels of SCFAs in the gut, alleviated inflammation in the brain, and ultimately improved anxiety-like and depression-like behaviours induced by lead exposure in mice. Subsequently, the effective mechanism was confirmed, highlighting that Lf312 worked through integrated strategies, including ionic adsorption and microbiota-gut-brain axis regulation. Collectively, this work elucidated the mechanism by which the gut microbiota mitigates the toxic effects of lead in the brain and provides preventive measures and intervention measures for brain damage due to mass lead poisoning in children.

Lactobacillus fermentum CKCC1858 alleviates hyperlipidemia in golden hamsters on a high-fat diet via modulating gut microbiota.

To investigate the effect of probiotic Lactobacillus fermentum CKCC1858, LF on the prevention of hyperlipidemia and its correlation with gut microbiota, golden hamsters were fed a high-fat diet alone or in combination with the probiotic for 6 weeks. The results showed that the LF intervention alleviated HFD-induced hyperlipidemia and liver damage, as evidenced by the reduced serum lipid profile levels and liver function markers. More importantly, the LF intervention attenuated HFD-induced microbiota dysbiosis by enhancing the abundance of SCFA-producing bacteria and reshaping the metabolic functions of the gut microbiota, likely contributing to its pronounced preventive effects on hyperlipidemia. This study elucidated the mechanism of the preventive effect of probiotics on hyperlipidemia in terms of regulating gut microbiota, and provided suggestions for regulating gut microbiota through probiotic interventions to improve lipid metabolism.

Lactobacillus fermentum (MTCC-5898) based fermented whey renders prophylactic action against colitis by strengthening the gut barrier function and maintaining immune homeostasis.

Nutritional intervention using probiotic fermented dairy product has emerged as a promising prophylactic strategy to curb inflammatory bowel diseases. Under present investigation, the potential of fermented whey prepared with probiotic Lactobacillus fermentum (LF:MTCC-5898) was investigated on dextran sodium sulfate (DSS) induced impaired intestinal barrier function in mice. Probiotic fermented whey (PFW) consumption improved the symptoms of colitis-associated with intestinal inflammation by significantly (p<0.01) diminishing the percent loss in body weight, disease activity index and spleen index with improved colon length besides hematological and histopathological score. Likewise, pre-treatment with PFW improved the barrier integrity (p<0.01) in contrast to leaky condition induced by DSS administration which increased the FITC-dextran permeability across gut epithelium. PFW consumption also provided the gut immune protection through significantly increased (p<0.05) TLR-2 expression and stimulated T-regulatory response by producing TGF-β (p<0.01) and, potently suppressed (p<0.01) inflammatory response (TNF-α, IL-4 and C-reactive protein). Further, PFW intake significantly enhanced (p<0.05) immunoglobulin (sIgA) secretion and concomitantly restored the Occludin, ZO-1 (p<0.01) and Claudin-1(p<0.05) transcriptional expression as compared to colitis mice. Additionally, immune-fluorescence further established the presence of intact actin cytoskeleton and tight junction proteins (claudin-1, occludin and ZO-1) after PFW consumption. Thus, PFW rectified the impaired and leaky barrier junctions not only through modulation of transcriptional expression of tight junction genes but also with reduced secretion of inflammatory mediators and helped in ameliorating the colitis. Hence, probiotic fermented whey prepared with L.fermentum (MTCC-5898) could be used as potential prophylactic functional food in the prevention of gut ailments.

Protective effect of probiotic and prebiotic fermented milk containing Lactobacillus fermentum against obesity-induced hepatic steatosis and inflammation.

Obesity has reached epidemic proportions, with major economic and health implications. The complex pathophysiology of obesity explains the difficulty provided to health policy for its clinical management. Increasing data show that obesity and metabolic abnormalities are intimately connected to differences in consumption of probiotics, its relevance to gut microbiota activity and composition. The goal of this investigation was to assess the effect of oral delivery of indigenous probiotic Lactobacillus fermentum NCDC 400 and prebiotic fructo-oligosaccharide (FOS) on obesity-associated hepatic steatosis and inflammation produced by a high-fat diet (HFD). C57BL/6 mice treated with L. fermentum NCDC 400 either independently or in conjunction with FOS demonstrated reduced body weight and abdominal obesity after 24 weeks of treatment. Also, the anti-oxidative enzyme activity went down, and the inflammatory profile got better, with less fat getting into the hepatocytes. The lipid profile changed, with HDL cholesterol going up and LDL cholesterol and triglyceride levels going down. Further, L. fermentum NCDC 400 and FOS combinations decreased fasting glucose, gHbA1c, gastric inhibitory peptide, and insulin levels in mice fed with HFD, thus improving glucose homeostasis. Overall, consumption of L. fermentum NCDC 400 alone or its combinational effects had a protective role on obesity-associated hepatic steatosis. PRACTICAL APPLICATIONS: The potential indigenous probiotic Lactobacillus fermentum NCDC 400 and prebiotic FOS had a preventive role in obesity-induced hepatic steatosis and improves anti-oxidant and anti-inflammatory properties in HFD-fed obese mice. Our finding would be helpful to prevent obesity-associated hepatic steatosis and inflammation upon supplementation of pre- and pro-biotics (synbiotics).

Evaluation of the Anti-Diabetic Potential of Probiotic Lactobacillus fermentum (PRI 29) Isolated from Cameroonian Fermented Cow Milk in Alloxan Induced Diabetes Type-1 Mice Model

Background: Diabetes remains a global public health concern in the world. Much is known about the burden of type 2 diabetes as opposed to type 1 diabetes mellitus (T1DM) hence underdiagnosis is evident. Diabetes type 1 is often associated with multiple symptoms and patients with type 1 diabetes are left with regular insulin injection as remedy despite odds of the fact that it is sprout by multiple challenges ranging from hypoglycemia, expensive nature and inconveniences. The use of probiotic bacteria appears today as one of safer alternative to alleviate diabetes and symptoms. Aim of the study: This study aims at characterizing potential hypoglycemic probiotic lactic acid bacterium from fermented cow milk and to evaluate its effects on anthropometric parameters of type-1 diabetes mellitus (T1DM) in an alloxan-induced mice model. Methods: The lactic acid bacteria were isolated from samples of Fulani cow milk using pour plating technique on de Man Rogosa and Sharpe (MRS) agar. The isolates were then further characterized phenotypically and molecularly using the 16s rRNA gene sequencing. Type-1 diabetes mellitus was induced in Balb-c mice by administration of 150mg/Kg B.w of alloxan intraperitoneally, twice consecutively. Animals were randomly divided into 6 groups after induction with 150mg/kg of alloxan per body weight except Group I (normal control). Animals were treated with different probiotic doses of concentration: 9x108 CFU/mL, 1.8x109 CFU/mL and 2.7x109CFU/mL respectively and insulin as positive control. MDA, NO levels as well as anti-oxidant levels (SOD, CAT, GSH) were measured from pancreatic homogenate. Results: One isolate (PRI 29) was selected based on its functional properties like resistance to simulated gastro-intestinal stress environment (acid and bile salt tolerance) and absence of hemolytic activity. This probiotic isolate was identified as a strain of Lactobacillus fermentum. The isolate was sensitive to 10 tested antibiotics including vancomycin, Imipenem and Ciprofloxacin. The isolate resisted acid and bile salts since there was no significant difference (p &gt;0.05) between viable count before and after incubation pH 2.5 and bile salts concentration of 0.3 and 0.6%. Administration of probiotic LAB significantly (p&lt;0.001) ameliorated polydipsia and polyphagia. The glucose and oral glucose tolerance levels were ameliorated in probiotics treated groups p&lt;0.05 as compared to the untreated group. Administration of Lactobacillus fermentum strain was capable of significantly ameliorating oxidative stress in LAB treated mice compared to untreated group (p&lt;0.001) demonstrated by decrease in pro-oxidant NO and MDA. The administration of probiotics led to increase in anti-oxidants (SOD, GSH &amp; CAT) to scavenge oxidative stress biomarkers within the mice treated group (p&lt;0.05). Conclusion: The selected Probiotic lactic acid bacterium isolated from cow milk possess antidiabetic and anti -oxidant properties.

Improvement the texture of nitrite-free fermented sausages using microencapsulation of fermenting bacteria

This study aims to amend nitrite-free fermented sausage texture already produced in our laboratory using microencapsulation of fermenting probiotic bacteria Lactobacillus plantarum PTCC1896 and Lactobacillus fermentum PTCC1744 (CNF treatment) and taking place physical, chemical, and microbial analyzes in comparison with cooked fermented sausages containing 120 ppm nitrite and aforementioned microencapsulated bacteria (CN treatment) and uncooked fermented sausages containing 120 ppm sodium nitrite and free bacteria (N treatment). Different percentages of sodium alginate, inulin and maltodextrin were used to evaluate the viability of bacteria. Combination of sodium alginate 1%, inulin 3% and maltodextrin 3% (w/v each) for L. plantarum PTCC1896 and sodium alginate 1%, inulin 5%, and maltodextrin 10% (w/v each) for L. fermentum PTCC1744 showed the most protective effects. The results of colorimetry showed that the mentioned bacteria could produce the desired red color of the sausage. The moisture content of cooked samples was significantly different from N treatment (p < 0.05). The pH of all treatments was within the desired range of microbial stability. The texture and microbial evaluation results showed that cooked treatments have better texture properties and lower microbial load during storage (p < 0.05). Considering the effects of cooking on the texture of sausage, the appropriate survival of microencapsulated bacteria and comparing the analyzes of the three treatments, the absence of nitrite and replacing it with the mentioned bacteria had no adverse effects and brought desirable results. Therefore, it is possible to produce nitrite-free probiotic fermented sausage with suitable organoleptic properties by cooking fermented sausage.

Optimization of Media Composition for Maximum Growth of Probiotic Lactobacillus fermentum NBC-08 Using Response Surface Methodology

In this study, it was aimed to determine the medium where Lactobacillus fermentum microorganisms with probiotic properties grow most efficiently by using Response Surface Method (RSM). Studies have been conducted on a 500 ml erlenmeyer scale, the medium optimization of the Lactobacillus fermentum strain was carried out according to the Central Composite Design (CCD) included in RSM. The effects of glucose, yeast extract, inorganic salts, and Tween 80 were investigated on the growth rate of the L. fermentum NBC-08 strain. Samples were taken at regular intervals from the erlenmeyer flask and the number of viable cells was measured by planting them in petri agar medium. In the study, the number of viable cells log10 (cfu/ml) was chosen as the response variable. As a result of the study, it was concluded that glucose and yeast extract are absolutely essential components in the medium. The optimum medium composition was found as 96.06 g/L glucose, 40.76 g L-1 yeast extract, 19.43 g L-1 inorganic salts, and 11.01 ml/L Tween 80. The production of the maximum L. fermentum strain was determined as 10.75 log10 (cfu ml-1). It is predicted that this study will make positive contributions to the fermentation conditions and medium optimization studies for production of lactic acid bacteria

The effect of natural feed additive on productive performance of broiler chickens

The effect of natural feed additive on productive performance of broiler chickens

Prevention and treatment of lactostasis and (or) mastitis in the pediatric area: practical aspects

Introduction. Incomplete breast emptying is the main cause of lactostasis, which can contribute to the development of mastitis. The article discusses the issues of prevention and treatment of lactostasis in breastfeeding mothers in the district covered by childhealth care: how to arrange breastfeeding, expression of breast milk, regime issues from the baby’s first days, as well as present-day knowledge on breast milk microbiota dysbiosis and an option of probiotic therapy. Clinical cases are presented.Clinical case 1. A breastfeeding mother found breast lumps on the one side 2 weeks after her labour. Lactostasis was diagnosed, it was caused by inappropriate breastfeeding technique. The breastfeeding mother was provided with the recommendations for proper performance of breastfeeding technique and prescribed the drug therapy: ibuprofen 400 mg once at fever ≥ 38.5 ºC and Lactobacillus fermentum CEST5716 – 1 capsule once daily. On the 3rd day, her health state significantly improved, the pain reduced, the temperature returned to normal, the breast lumps practically disappeared, on the 5th day the pain and breast lumps completely disappeared.Clinical case 2. A breastfeeding mother, first labour, 2 months have passed since her labour, exclusively breastfeeding on demand, complaints of pain in the left breast, local hyperemia 3 x 3 cm occurred, no breast lumps, local pain elicited by palpation, fever of 37.2 ºC. The breastfeeding mother was diagnosed with lactostasis, she was provided with recommendations for the arrangement of breastfeeding and expression of breast milk; not proscribed with antibacterial therapy, but the therapy with Lactobacillus fermentum CEST5716, 1 capsule once daily for 1 month. A day later, her health state improved: the pain reduced, the hyperemia disappeared, her body temperature returned to normal. The patient was recommended non-drug measures for preventing lactostasis and continuous administration of Lactobacillus fermentum CEST5716 – 1 capsule daily for 1 month.Clinical case 3. A breastfeeding mother detected daily lactostasis in her right breast 3 months after her labour. It might had been caused by chest contusion before the onset of the 1st episode of lactostasis. Medical examination revealed calcifications in her breast duct. Against the background of non-drug therapy, the patient adminstered Lactobacillus fermentum CEST5716 – 1 capsule daily, which resulted in a positive effect in a week’s time. The follow-up observation showed that lactostasis completely resolved without relapses in a 1.5-months’ time.Сonclusion. The correct breastfeeding technique is key to the prevention of lactostasis and mastitis, and the use of probiotic therapy Lactobacillus fermentum CEST5716 is an effective and safe drug treatment.

Pengaruh Probiotik Bakteri Asam Laktat dalam Air Minum Terhadap Konversi Pakan Ayam Broiler

This study aimed to determine the effect of probiotics of lactic acid bacteria in drinking water on feed consumption, weight gain and feed conversion ratio of broiler chickens. This research is an experimental research. The experimental animals used in this study were 28 male broiler chickens strain Cobb 700 aged 20 days. P0 was not given the addition of probiotic lactic acid bacteria, P1 was given the addition of probiotic lactic acid bacteria Lactobacillus acidophilus in 1ml/liter drinking water, P2 was given the addition of probiotic lactic acid bacteria Lactobacillus casei in drinking water 1ml/liter, P3 was given the addition of probiotic lactic acid bacteria Lactobacillus fermentum in drinking water 1ml/liter, P4 was given the addition of probiotic lactic acid bacteria Lactobacillus plantarum in drinking water 1ml/liter, P5 was given the addition of probiotic lactic acid bacteria Pediococcus in drinking water 1ml/liter, P6 was given the addition of probiotic mix lactic acid bacteria in drinking water 1ml /liter. Collecting data for the last 1 week by weighing the remaining consumption of feed given and weight gain of broiler chickens. The data obtained were analyzed using the Analysis of Variant (ANOVA) statistical method and continued with Duncan. Based on the results of the calculation of the amount of feed consumption and weight gain in broiler chickens, it showed that the administration of probiotic lactic acid bacteria 1ml/liter of water in broiler chickens could increase body weight gain, reduce feed conversion rates but did not reduce broiler feed consumption (p&lt;0.05).

Addition of Dairy Lipids and Probiotic Lactobacillus fermentum in Infant Formulas Modulates Proteolysis and Lipolysis With Moderate Consequences on Gut Physiology and Metabolism in Yucatan Piglets.

Breast milk is the gold standard in neonatal nutrition, but most infants are fed infant formulas in which lipids are usually of plant origin. The addition of dairy lipids and/or milk fat globule membrane extracts in formulas improves their composition with beneficial consequences on protein and lipid digestion. The probiotic Lactobacillus fermentum (Lf) was reported to reduce transit time in rat pups, which may also improve digestion. This study aimed to investigate the effects of the addition of dairy lipids in formulas, with or without Lf, on protein and lipid digestion and on gut physiology and metabolism. Piglets were suckled from postnatal days 2 to 28, with formulas containing either plant lipids (PL), a half-half mixture of plant and dairy lipids (DL), or this mixture supplemented with Lf (DL+Lf). At day 28, piglets were euthanized 90 min after their last feeding. Microstructure of digesta did not differ among formulas. Gastric proteolysis was increased (P < 0.01) in DL and DL+Lf (21.9 ± 2.1 and 22.6 ± 1.3%, respectively) compared with PL (17.3 ± 0.6%) and the residual proportion of gastric intact caseins decreased (p < 0.01) in DL+Lf (5.4 ± 2.5%) compared with PL and DL (10.6 ± 3.1% and 21.8 ± 6.8%, respectively). Peptide diversity in ileum and colon digesta was lower in PL compared to DL and DL+Lf. DL and DL+Lf displayed an increased (p < 0.01) proportion of diacylglycerol/cholesterol in jejunum and ileum digesta compared to PL and tended (p = 0.07) to have lower triglyceride/total lipid ratio in ileum DL+Lf (0.019 ± 0.003) as compared to PL (0.045 ± 0.011). The percentage of endocrine tissue and the number of islets in the pancreas were decreased (p < 0.05) in DL+Lf compared with DL. DL+Lf displayed a beneficial effect on host defenses [increased goblet cell density in jejunum (p < 0.05)] and a trophic effect [increased duodenal (p = 0.09) and jejunal (p < 0.05) weights]. Altogether, our results demonstrate that the addition of dairy lipids and probiotic Lf in infant formula modulated protein and lipid digestion, with consequences on lipid profile and with beneficial, although moderate, physiological effects.

Lactobacillus fermentum MCC2759 and MCC2760 Alleviate Inflammation and Intestinal Function in High-Fat Diet-Fed and Streptozotocin-Induced Diabetic Rats

The growing incidence of type 2 diabetes and obesity has become a worldwide crisis with increased socio-economic burden. Changes in lifestyle and food habits resulting in dysbiosis of the gut microbiota and low-grade inflammation are linked to the rising incidence. The aim of this study was to investigate the effects of potential probiotic Lactobacillus fermentum MCC2759 and MCC2760 on intestinal markers of inflammation using a high-fat diet (HFD)-fed model and a streptozotocin (STZ)-induced diabetic model. Lact. fermentum administration showed improved oral glucose tolerance compared with the model controls of HFD (AUC 1518) and STZ (628.8). Plasma insulin levels improved in the Lact. fermentum treated groups of HFD + MCC2759 (129 ± 4.24 pmol/L) and HFD + MCC2760 (151.5 ± 9.19 pmol/L) in HFD study, while in STZ diabetic study, the insulin levels were normalized with Lact. fermentum administration, for D + MCC2759 (120.5 ± 7.77) and D + MCC2760 (138 ± 5.65 pmol/L) groups. The results showed reduction in inflammatory tone in liver, muscle, and adipose tissues of rats in both models with stimulation of anti-inflammatory IL-10 by real-time quantitative polymerase chain reaction. Additionally, the potential probiotic cultures also displayed normalization of markers related to intestinal barrier integrity (ZO-1), TLR-4 receptor, and insulin sensitivity (GLUT-4, GLP-1, adiponectin). Thus, the results suggest that Lact. fermentum could act as potential probiotic for lifestyle-related disorders such as obesity, diabetes, and metabolic syndrome as both prophylactic and adjunct therapies.

Isothermal degradation kinetics of the probiotic Lactobacillus fermentum by thermogravimetry

Lactobacillus fermentum is a probiotic that belongs to the group of lactic acid bacteria and presents high intestinal colonization capacity after oral administration. To maintain its quality during manufacturing to its expiration, the physical and chemical stability of the probiotic remains a major challenge and concern. This work aimed to determine the thermal degradation parameters of the probiotic Lactobacillus fermentum by thermogravimetry (TG), calculated using the Arrhenius mathematical model. The probiotic degradation followed a second-order kinetics, where the rate of its degradation depends on the concentration of two or more reactants, presenting degradation rate constant of 6.23 × 10−10 min−1 at 25 °C and an activation energy of 21,987 cal mol−1. The value corresponding to the simulate shelf life was also obtained. TG is an extremely useful tool, simple and fast to determine the degradation rate parameters of the compounds including pharmaceuticals and nutraceuticals. The shelf life needs to be defined by realist data. This is the first time that was used TG to determine the degradation reaction of probiotics.

The Probiotic Lactobacillus fermentum Biocenol CCM 7514 Moderates Campylobacter jejuni-Induced Body Weight Impairment by Improving Gut Morphometry and Regulating Cecal Cytokine Abundance in Broiler Chickens.

Simple SummaryHigh consumption of chicken meat and derived products has been associated with Campylobacter jejuni infections in humans. Probiotics have been exploited successfully with the aim of preventing colonization by unwanted microorganisms in birds. In this research, we investigated the effects of Lactobacillus fermentum Biocenol CCM 7514 supplementation on body weight, morphometry of the intestine and the cecal cytokine response. Probiotic-treated chickens showed higher body weight values than those exposed to C. jejuni or reared under control conditions. These differences in body weight were correlated to the overall characteristics of the small intestine, with larger villi and deeper crypts, observed in chickens administered with L. fermentum; such conditions are known to favor nutrient absorption. Likewise, body weight proved to be correlated to transcript abundance of IL-1β and IL-13. In probiotic-treated birds, such factors were upregulated in comparison to what was detected in C. jejuni-infected chickens; these interleukins are considered crucial in the response to invading pathogens. Clearly, these results show that administration of this probiotic strain lessens the negative effects elicited by C. jejuni and ultimately improves chicken body weight.This research was conducted to investigate if the administration of the probiotic Lactobacillus fermentum could influence body weight, intestinal morphometry and the cecal cytokine response in Campylobacter jejuni-infected chickens. Seventy-two 1-day old COBB 500 male chicks were allocated randomly into four experimental groups. (I) Control group (C), in which chicks were left untreated. (II) LB group, treated with L. fermentum. (III) Cj group, infected with C. jejuni and (IV) coexposure group in which both bacteria were administered. Body weight was registered and then all birds were slaughtered; samples from the small intestine and caecum were collected at 4- and 7-days post infection. The experiment lasted eleven days. Villi height and crypt depth ratios of the duodenum, jejunum and ileum were evaluated using appropriate software, while reverse transcription quantitative PCR (RT-qPCR) was utilized for assessing transcript levels of key cecal inflammatory cytokines (IL-1β, IL-18, IL-17, IL-15, IL13 and IL-4). Campylobacter-infected birds showed lower body weight values than those supplemented with the probiotic; these birds, in turn, proved to be heavier than those reared under control conditions. L. fermentum administration improved morphometrical parameters of the duodenum, jejunum and ileum; in general, villi were larger and crypts deeper than those identified in control conditions. Moreover, the negative effects elicited by C. jejuni were not observed in chickens exposed to the probiotic. Significant differences were also determined with regards to transcript abundance of all evaluated cytokines in the caecum. C. jejuni induced a downregulation of the studied interleukins; however, such a response was heightened by administration of L. fermentum, with an increase rate of transcription that promoted a more effective response to a C. jejuni infection. The effects of experimental treatments proved to vary between sampling points. Conclusively, these results demonstrate that L. fermentum lessens the negative effects elicited by C. jejuni on body weight by alleviating the impact on intestinal morphometry and cecal cytokine response, which ultimately improve chicken growth performance.