Biochemical Parameters Of Blood Serum Research Articles

Serum Biochemical Parameters of Broilers Affected by Wooden Breast Myopathy.

Wooden breast (WB) myopathy is a pathology of the pectoralis major muscle. Wooden breast is caused by multiple factors. The exact etiopathogenesis of this myodegenerative pathology is still unclear. Fast-growing commercial lines of broilers that are selected for high breast muscle yields are more susceptible to this myopathy. The biochemical analysis of blood is used to diagnose pathologies and understand disease processes. Therefore, the objective of this research was to determine and compare the changes in the blood serum biochemical parameters of Ross 308 chicken broilers without myopathy and those affected by WB myopathy. Blood samples were collected from male and female Ross 308 broilers that were 43 days old, with an average live weight of 2.98-3.09 kg. Representative blood samples were selected from broilers with WB (n = 33) and without WB (n = 33). In the laboratory, the blood was centrifugated, and biochemical tests were performed with an automated computerized biochemistry analyzer. The research results showed that broilers with WB had elevated blood serum levels of creatine kinase (CK) (p = 0.018), potassium (p = 0.010), and alanine aminotransferase (ALT) (p = 0.012). In conclusion, elevated serum levels of CK and potassium indicated that skeletal muscle cells were damaged. Moreover, increased ALT levels suggested a possible association between WB myopathy and liver damage. Additionally, these research findings underscore the diagnostic significance of CK and hint at its potential as a WB biomarker.

Testing of acute and sub-acute toxicity profile of novel naproxen sodium nanoformulation in male and female mice

Nanodrugs offer promising alternatives to conventionally used over the counter drugs. Compared to its free form, therapeutic benefits, and gastric tissue safety of naproxen sodium nanoformulation (NpNF) were recently demonstrated. Essential regulatory safety data for this formulation are, however, not available. To address this, male and female BALB/c mice were subjected to acute and 14-day repeated-oral dose assessments. Our data indicate that NpNF was well tolerated up to 2000 mg/kg b.w. A 14-day subacute toxicity testing revealed that the oral administration of low dose (30 mg/kg) NpNF did not produce any adverse effects on blood profile and serum biochemical parameters. Levels of oxidative stress markers and antioxidant enzymes neared normal. Histology of selected tissues also showed no evidence of toxicity. In contrast, a ten-fold increase in NpNF dosage (300 mg/kg), demonstrated, irrespective of gender, mild to moderate toxicity (p<0.05) in the brain, stomach, and heart tissues, while ROS, LPO, CAT, SOD, POD, and GSH levels remained unaffected in the liver, kidney, spleen, testis, and seminal vesicles. No effect on serum biochemical parameters, overall indicated a no-observed-adverse-effect level (NOAEL) is 300 mg/kg. Further increase in dosage (1000 mg/kg) significantly altered all parameters demonstrating that high dose is toxic.

Investigating the mechanism of cornel iridoid glycosides on type 2 diabetes mellitus using serum and urine metabolites in rats

Ethnopharmacological relevanceCornel iridoid glycosides (CIG) are extracted from Corni fructus, a herbal medicine used in traditional Chinese medicine to treat diabetes. However, the antidiabetic effects of CIG and the underlying metabolic mechanisms require further exploration. Aim of the studyThis study aimed to assess the antidiabetic effects and metabolic mechanism of CIG by performing metabolomic analyses of serum and urine samples of rats. Materials and methodsA rat model of type 2 diabetes mellitus (T2DM) was established by administering a low dose of streptozotocin (30 mg/kg) intraperitoneally after 4 weeks of feeding a high-fat diet. The model was evaluated based on several parameters, including fasting blood glucose (FBG), random blood glucose (RBG), urine volume, liver index, body weight, histopathological sections, and serum biochemical parameters. Subsequently, serum and urine metabolomics were analyzed using ultra-high-pressure liquid chromatography coupled with linear ion trap-Orbitrap tandem mass spectrometry (UHPLC-LTQ-Orbitrap-MS). Data were analyzed using unsupervised principal component analysis (PCA) and supervised orthogonal partial least squares discriminant analysis (OPLS-DA). Differential metabolites were examined by the Kyoto Encyclopedia of Genes and Genomes (KEGG) metabolic pathways to explore the underlying mechanisms. ResultsAfter 4 weeks of treatment with different doses of CIG, varying degrees of antidiabetic effects were observed, along with reduced liver and pancreatic injury, and improved oxidative stress levels. Compared with the T2DM group, 19 and 23 differential metabolites were detected in the serum and urine of the CIG treatment group, respectively. The key metabolites involved in pathway regulation include taurine, chenodeoxycholic acid, glycocholic acid, and L-tyrosine in the serum and glycine, hippuric acid, phenylacetylglycine, citric acid, and D-glucuronic acid in the urine, which are related to lipid, amino acid, energy, and carbohydrate metabolism. ConclusionsThis study confirmed the antidiabetic effects of CIG and revealed that CIG effectively controlled metabolic disorders in T2DM rats. This seems to be meaningful for the clinical application of CIG, and can benefit further studies on CIG mechanism.

The effect of various modes of electrical influence on the skeletal muscles of the lengthened ­segment during distraction of the lower leg according to Ilizarov

BACKGROUND: When using electrical muscle stimulation in clinical practice, it is important to select the optimal mode of this effect, since muscles largely determine the movement of the limb during the rehabilitation period.&#x0D; AIM: Study of the tibialis anterior muscle reaction during Ilizarov distraction of the tibia in combination with the direct effect of direct electric current on the regenerated area in the experiment.&#x0D; MATERIAL AND METHODS: The tibialis anterior muscle and biochemical parameters of blood serum (creatin kinase activity, lactate concentration) of 27 male Soviet chinchilla rabbits aged 12 months, weighing 3.85±0.18 kg, tibia length 11.2±0.13 cm, were studied. The animals were divided into three groups: control (n=9), first (n=9) and second experimental (n=9). The right tibia was fixed with an Ilizarov apparatus, a transverse osteotomy was performed in the middle third of the diaphysis, and from the 5th day, distraction began at a rhythm of 0.125 mm in 4 steps to an amount of 10% of the original length for 26 days. Fixation lasted 40 days, the period without the device was 30 days. For electrical stimulation, wire-electrodes were inserted into the diaphysis, and electrical stimulation of the bone regenerate was performed for 1 minute with a current intensity of 150 mAm. In the first group, electrical stimulation was performed starting from the day of surgery and on days 2, 4, 6, 8, 10 of the experiment. In group 2, electrical stimulation began on the 10th day after surgery and on the 12th, 14th, 16th, 18th, and 20th days of the experiment. In the control group, no electrical stimulation was applied. Using the methods of stereometric analysis of digitized images of tibialis muscle’s cross sections, the volumetric density of myosymplasts, microvessels, endomysium and nuclear component, the numerical density of myosymplasts and microvessels were determined, and the vascularization index was calculated. For statistical processing of data, the Wilcoxon W test and the Mann–Whitney T test were used; numerical data were presented in tables.&#x0D; RESULTS: A positive effect of electrical stimulation on the muscles of the experimental groups was established in comparison with the control group, where fibrosis of muscle tissue at the end of the experiment was 0.2777±0.0055 mm3/mm3, which was 230% relative to the parameter of the first group (0.1217±0.0121 mm3/mm3) and 370% relative to the second group (0.0752±0.0062 mm3/mm3). An advantage was noted for the second group, where electrical stimulation was carried out from the 5th day of distraction and at the end of the experiment the histostructure of the muscle, characteristic of the intact norm, prevailed.&#x0D; CONCLUSION: Electrical impact on bone regenerate from the 5th day of distraction stimulates reparative processes in the tibialis anterior muscle and serves as an organ-saving method.

Biochemical parameters of dairy goats of the Zaanen breed when using a preparation based on bacillus Amyloliquefaciens

The effect of a drug based on B. amyloliquefaciens on the biochemical parameters of blood serum of dairy goats was studied. All biochemical parameters of the animals corresponded to the norm, but in the experimental groups during the experiment, the amount of total protein and albumin was higher on average by 8.39% (p≤0.05) and 16.5% (p≤0.05), respectively. The amount of cholesterol was 17.5% lower in the experimental groups (p≤0.01), the activity of the enzyme aspartate aminotransferase was 7.6% lower, the bilirubin content was 19.5% lower (p≤0.01) compared to the control parameters. The use of probiotic B. amyloliquefaciens optimizes the intensity of metabolic processes and improves liver function in animals. This contributed to an increase in the average milk yield per lactation in the experimental groups of goats by 60 and 51 kg relative to the control data. It is possible to recommend the drug probiotic B. Amyloliquefaciens as a biologically active supplement for goats during lactation in order to increase the milk yield of animals and receive conditionally additional profit in the amount of 2244.5 rubles per head on average.

Influence of the rat diet enrichment with oat β-gucans on the assimilation of B group vitamins, mineral elements and lipid metabolism

Despite the widespread use of oat β-glucans as ingredient of foods and dietary supplements, there is insufficient data on their effect on the metabolism of vitamins and minerals. The purpose of the study was to evaluate the effect of including oat bran with a high content of β-glucans (β-glucan) in the diet on the absorption of micronutrients and lipid metabolism in growing rats deficient in vitamins D, group B and trace elements (iron, copper, zinc). Material and methods. After the development of micronutrient deficiency (for 23 days), in order to assess the effect of oat bran (5%) with a high content of β-glucans on the correction of the micronutrient status of growing male Wistar rats (with initial body weight of 70.7±0.7 g), the missing micronutrients were introduced in the semi-synthetic diet deficient in vitamins D, group B, iron, copper and zinc within 7 days either along with β-glucan (1.47%) or without its addition. Indicators of micronutrient sufficiency (riboflavin serum concentration, daily urinary excretion of thiamine, riboflavin and 4-pyridoxic acid, measured by fluorometric methods; serum concentration and urinary excretion of calcium, magnesium, iron, zinc, copper, phosphorus, measured by the atomic absorption method or using standard methods on a biochemical analyzer) and the biochemical parameters of blood serum were compared with the parameters of rats adequately provided with all micronutrients throughout the experiment. Results. Replenishment of missing micronutrients in the diet of rats with deficiency in vitamins D and group B, iron, copper and zinc for 7 days led to the elimination of deficiency of vitamins B1, B2 and B6, regardless of the presence of β-glucans in the diet. At the same time, against the background of the presence of β-glucans in the feed, an increase in the absorption of iron was observed, as evidenced by an increase by 1.73 times in iron blood plasma level (р<0.05) and a tendency towards its urinary excretion decrease by 1.60 fold (р<0.10) compared to animals from the control group. Adding oat bran with β-glucans to the feed did not lead to a decrease in blood plasma level of total cholesterol and low-density lipoproteins cholesterol. The levels of high-density lipoprotein cholesterol and triglycerides in rats of all three groups did not have statistically significant differences. Conclusion. The presence of β-glucans in the diet had virtually no effect on the absorption of B vitamins and improved the absorption of iron.

Влияние хронического иммобилизационного стресса у крыс, получающих различные рационы, на обеспеченность витаминами

Влияние хронического иммобилизационного стресса у крыс, получающих различные рационы, на обеспеченность витаминами

Действие 1-метил-4-(4-фторфенил)- 1,2,3,6-тетрагидропиридина на биохимические показатели сыворотки крови и обмен моноаминов в головном мозге мышей

Changes in biochemical parameters of blood serum and monoamine metabolism in the brain were studied on male white outbred mice subjected to intraperitoneal injections of 1-methyl-4-(4-fluorophenyl)-1,2,3,6-tetrahydropyridine (MPTP-F). The levels of norepinephrine, dopamine, serotonin and their metabolites — dioxyphenylacetic, homovanilinic and 5-hydroxyindolacetic acids — were neasured by HPLC in the cerebral cortex, hippocampus, olfactory tubercle and striatum of the right and left sides of the brain. The treatement with MPTP-F did not lead to significant changes in the biochemical parameters of blood serum. An increase in the norepinephrine concentration a decrease in the dopamine level in the right striatum were found in animals treated with MPTP-F. No changes were detected in other studied brain areas. It has been suggested that the effect of the neurotoxin MPTP-F is determined by several factors, i. e. the lipophilic properties of the molecule, the quantitative distribution of dopamine neurons between right and left sides of the brain, differences in the linear velocity of blood flow through the right and left carotid arteries and the state of the blood-brain barrier. The results obtained may indicate the prospects of using MPTP-F for modeling the early stage of Parkinson’s disease.

Toxicity study of pro-angiogenic casein manganese oxide nanoparticles: an in vitro and in vivo approach

Recently, we have demonstrated casein manganese oxide nanoparticles (CMnNP) that exhibit pro-angiogenic property established through different in vitro and in vivo experiments. The CMnNP was explored for therapeutic angiogenesis for treatment of wounds and recovery of hindlimb ischemia in pre-clinical mouse prototypical. It is well known that to translate any therapeutic nanoparticle for future clinical applications, their biosafety evaluation in small and large animals is essential. Herein, in the current study, the biosafety and bioavailability of the CMnNP have been explored by a systematic toxicity profiling study in C57BL/6J mice model. Initially, the in vitro cytotoxic effects of CMnNP were validated in RAW 264.7 cells. Later, the CMnNP was administered intraperitoneally with different doses (50, 300, and 2000 mg/kg b.wt./day) at different time points of exposure (acute: 2 weeks, sub-chronic: 4 weeks as well as chronic exposure: 8 and 20 weeks) with reference to the maximum tolerable dose (MTD) of CMnNP as per the OECD guidelines. The blood hematological and serum biochemical parameters of CMnNP treatment groups indicate negligible changes similar to untreated group. The histopathological examination of CMnNP-treated vital organs (lung, spleen, liver, brain, kidney, and heart) illustrates no major changes even at higher doses. Further, the biodistribution and excretion study depicts normal clearance of CMnNP. Additionally, the serum cytokine levels were normal in the therapeutic dose of CMnNP. The results altogether indicate that the non-toxic nature of CMnNP makes them useful as future therapeutic angiogenic agent for the treatment of various diseases where angiogenesis plays an important role.

Ameliorative effects of Scutellaria Pinnatifida subsp. pichleri (Stapf) Rech.f. Extract in streptozotocin-induced diabetic rats: chemical composition, biochemical and histopathological evaluation

BackgroundsScutellaria Pinnatifida subsp. pichleri (Stapf) Rech.f. (SP) is used in folk medicine for the treatment of diabetes. The aim of the study was to determine the phenolic profile of SP extract (SPE) by LC-MS/MS and to investigate the antidiabetic, hepatoprotective and nephroprotective effects of SPE in streptozotosin (STZ)-induced diabetic rat model.MethodsForty-two rats were randomly divided into six groups (n = 7): Control (nondiabetic), diabetes mellitus (DM), DM + SP-100 (diabetic rats treated with SPE, 100 mg/kg/day), DM + SP-200 (diabetic rats treated with SPE, 200 mg/kg/day), DM + SP-400 (diabetic rats treated with SPE, 400 mg/kg/day) and DM + Gly-3 (diabetic rats treated with glibenclamide, 3 mg/kg/day). Live body weight, fasting blood glucose (FBG) level, antidiabetic, serum biochemical and lipid profile parameters, antioxidant defense system, malondyaldehyde (MDA) and histopathological examinations in liver, kidney and pancreas were evaluated.ResultsApigenin, luteolin, quinic acid, cosmosiin and epigallocatechin were determined to be the major phenolic compounds in the SPE. Administration of the highest dose of SP extract (400 mg/kg) resulted in a significant reduction in FBG levels and glycosylated hemoglobin levels in STZ-induced diabetic rats, indicating an antihyperglycemic effect. SPE (200 and 400 mg/kg) and glibenclamide significantly improved MDA in liver and kidney tissues. In addition, SPE contributed to the struggle against STZ-induced oxidative stress by stimulating antioxidant defense systems. STZ induction negatively affected liver, kidney and pancreas tissues according to histopathological findings. Treatment with 400 mg/kg and glibenclamide attenuated these negative effects.ConclusionsIn conclusion, the extract of the aerial part of Scutellaria pinnatifida subsp. pichleri has hepatoprotective, nephroprotective and insulin secretion stimulating effects against STZ-induced diabetes and its complications due to its antidiabetic and antioxidant phytochemicals such as apigenin, luteolin, quinic acid, cosmosiin and epigallocatechin.

Effect of papaya (Carica papaya) seed as phytogenic feed additives on egg performance, egg quality and blood serum biochemical constituents of layer hens.

Supplementing poultry diets with certain natural phytogenic additives has positive impacts on performance parameters like feed intake, egg production and quality of layer hens. The study aimed to examine how supplementing papaya seed as phytogenic feed additive (PFA) to the diets of layer chickens affected their egg production, quality and blood serum biochemical parameters. One hundred twenty 28-week-old Bovans brown laying hens were randomly assigned to one of four treatments with varying levels of papaya seed supplementation at 0g/kg (T1), 5g/kg (T2), 10g/kg (T3) and 15g/kg (T4) in a complete randomized design. Layer chickens supplemented with 0.5% (T2), 1% (T3) and 1.5% (T4) papaya seed as a PFA had significantly (p<0.05) improved dry matter intake, egg production%, egg mass and feed conversion. On the other hand, papaya seed supplementation decreased (p<0.05) the bodyweight gain of laying hens. Papaya seed supplementation significantly (p<0.05) increased egg weight, length, width, yolk height and yolk colour compared to the control group. Serum total protein on T4 and liver enzyme of alkaline phosphatase on T3 were significantly greater (p<0.05) than in the control group. However, there were no significant differences (p>0.05) in serum albumin, glucose, total cholesterol, triglyceride and aspartate aminotransferase levels among treatments laying hens. Papaya seed can be a potential candidate as a PFA at 5-15g/kg of the basal diet to improve egg-laying performance and quality without deteriorating effect.

Вариабельность биохимических показателей крови и установление референтных интервалов в доклинических исследованиях. Сообщение 10: монгольские песчанки

Gerbils as a type of laboratory animals are widely used as experimental models in a number of areas of biomedical research. This type of laboratory animals is relatively easy to maintain and handle. They are an alternative test system among rodents such as mice and rats. They are most often used in the study of cerebral ischemia or stroke, behavioral research, aging processes, the development of oncological diseases, as well as the study of para­sitic, viral and bacterial infections, studies of the mechanisms and therapy of epileptic seizures and metabolic disorders such as obesity and diabetes mellitus. The aim of this work was to create a database of reference intervals of biochemical parameters of normal healthy mature Mongolian gerbils with further use in daily routine laboratory practice in preclinical centers. The data that were used to form the reference intervals were obtained from intact animals in “Home оf Pharmacy”. All manipulations and experiments were approved by the bioethical commission. The study involved 20 males and 20 females (non-pregnant excluding the estrous cycle phase) of Mongolian gerbils. The age of the animals corresponded to the range of 6–8 weeks, the body weight of males and females was within 60 g. The levels of the following parameters were determined in the blood serum of animals: creatinine, urea, alanine aminotransferase, aspartateaminotransferase, alkaline phosphatase, cholesterol, triglycerides, total protein, albumin, glucose, total bilirubin, the number of globulins was calculated, as well as the ratio of albumin/globulins. The obtained ranges of males and females had no statistical difference between them. These intervals were analyzed for comparison with other reference intervals of gerbils found in the scientific literature, as well as with ranges of similar indicators characteristic of humans. Norms of biochemical parameters of blood serum of gerbils are an important tool necessary for monitoring animal health during biomedical research, monitoring the dynamics of modeling pathological conditions in animals and studying the safety of new pharmacological agents. An important aspect in preclinical research is the creation of any reference intervals of laboratory animals in each scientific center separately. This is due to a large number of pre-analytical, analytical and post-­analytical features, as well as minimizing the risk of misinterpretation of the data obtained during biomedical research.

The effect of training load stress on salivary cortisol concentrations, health parameters and hematological parameters in horses

The performance of sport horses is conditioned not only by the quality of its gene pool, but also by a large number of external factors. The most dominant being nutrition, quality of breeding, level of zootechnical care and the quality of the sports rider and coach. Important factor is the process of individuals’ adaptation to the training load occurring during the training itself. This study was focused on the analysis of salivary cortisol levels as well as hematological and biochemical blood parameters in relation to load to which the tested horses were subjected. In the study 14 horses of sport breeds were analyzed a all tested horses were in the same (medium) level of training load. Tested horses underwent following stages of workload – transportation, jumping training, parkour competition, treadmill training, riding training, shoeing and lunging of various intensity. Saliva samples were obtained using a tampon on a string which was inserted into horse's oral cavity, chewed by the horse and placed in a sterile tube with a closable lid. Afterwards, the samples were then stored in deep-freezing boxes at temperature of −80 °C. The EIA cortisol kit was used in this study. The absorbance was read at the wavelength of 450 nm against a reference wavelength of 620–630 nm or a blank sample. Blood samples were obtained at the beginning of the experiment, after half a year of running the experiment and at the end of the experiment from v. jugularis. Hematological analysis were carried out using automatic hematologic analyser and multiple parameters were observed. Analysis of biochemical parameters in blood serum were realized using commercial DiaSys kits and semiautomatic biochemical spectrophotometer. Sodium, potassium and chlorides were measured using automatic analyzer EasyLytePlus. In all monitored forms of exercise (transportation, jumping training, parkour competition, treadmill training, riding training, horse shoeing, lunging), an increase in cortisol concentrations immediately after the exercise was recorded, but only spotted statistically significant differences were found during the transportation of monitored horses. The levels of blood parameters were within the reference range during the experiment period. From a comprehensive evaluation of the results, it can be stated that there were no visible health changes to the horses that underwent the experimental load and that manipulation with horses is an important factor that has effect on horses’ stress response. In general, the results of this study show no visible impact of training and/or load on the health status of horses over entire 12-month duration of the experiment.

Effects of Shiitake mushroom (Lentinus edodes) supplementation into quail diets on performance, blood serum parameters and intestine microbial populations

This study was conducted to investigate the effects of shiitake mushroom (Lentinus edodes) (SM) supplementations into quail diets on live weight (LW), live weight gain (LWG), feed consumption (FC), feed conversion ratio (FCR), blood serum biochemical parameters (total cholesterol, total protein, triglyceride, glucose) and intestine bacteria populations. A total of 120 Japanese quail (Coturnix coturnix Japonica) were used in present experiments. Quail were separated into 4 groups (control and 3 treatment groups). Control group was fed with a basic ration and treatments groups were fed with 0.5, 1 and 2% shiitake mushroom-supplemented diets. Shiitake mushroom supplementations significantly influenced live weights (P&lt;0.05). Differences in live weight gains, feed consumptions, feed conversion ratios, blood serum parameters and intestine bacteria populations of the treatment groups were not found to be significant (P&gt;0.05). SM supplementations influenced live weight gains and feed conversion ratios in the 4th week of the experiments (P&gt;0.05). SM supplementations also influenced blood serum glucose levels (P&lt;0.05).

Benefits of sea buckthorn juice consumption in women of productive age with hypercholesterolemia.

Sea buckthorn contains almost 200 nutrients and bioactive substances, including phenolic compounds such as flavonoids, vitamins, proteins, amino acids, minerals, alkaloids, chlorophyll derivatives, amines, organic acids, fatty acids and phytosterols. Human and animal studies suggest that sea buckthorn may have a variety of beneficial effects: cardioprotective, antiatherogenic, antioxidant, anticancer, immunomodulatory, antibacterial, antiviral and antiinflammatory. The aim of this study was to evaluate the effect of regular consumption of 100% sea buckthorn juice on the risk factors of cardiovascular diseases in women of productive age with hypercholesterolemia. A clinical study involved 19 women with a mean age of 54.06 ±2.97 years who consumed 50 mL of sea buckthorn juice daily for 8 weeks. Anthropometric and biochemical parameters in blood serum were monitored before the start of sea buckthorn consumption and after 8 weeks of consumption. Body composition was determined using an multifrequency analyzer InBody720. Routine biochemical analyzes were performed by standard methods in an accredited laboratory of the University Hospital by automatic biochemical analyzer BioMajesty JCA-BM6010/C. Statistical comparison between individual measurements was performed using a paired t-test, using Statistica Cz version 10 (TIBCO Software, Inc., Palo Alto, CA, USA). We observed significant decrease of body weight, body mass index (P<0.05), body fat and visceral fat (P<0.001) after 8 weeks of consumption of 100% sea buckthorn juice. In this intervention study, we observed a significant decrease in low-density cholesterol (P˂0.05) and a significant increase in high-density cholesterol (P˂0.001). The level of triglycerides was similar at the end of the study (P>0.05). After the intervention, we observed decrease of orosomucoid, immunoglobulin A, immunoglobulin G, immunoglobulin M (P<0.001) and C-reactive protein (P<0.01). The obtained results support the hypothesis that the daily consumption of sea buckthorn juice for eight weeks could contribute to the beneficial effects of reducing the risk of cardiovascular diseases, such as the reduction of body and visceral fat, LDL-C, CRP and the increase of HDL-C.

A clinical case of the use of a combination of cimicoxib and cyclophosphamide in metronomic mode in neoadjuvant therapy of complex breast carcinoma of a dog

The results of the use of a combination of cimicoxib and cyclophosphamide, in metronomic mode, in neoadjuvant therapy of complex breast carcinoma in dogs are presented. This treatment regimen allowed to achieve stabilization of the process, the volume of the tumor decreased by 60.77% of the indicators of the first day. The regression was 39.23%. According to the results of hematological blood examination, by the 90th day of therapy, the number of leukocytes decreased by 75.96%, lymphocytes by 79.67% and granulocytes by 75.64%, to reference values. The number of red blood cells and the level of hemoglobin increased by 49.57% and 53.98%, respectively. There was an increase in the amount of hematocrit by 52.35% compared to the values of the first day before therapy. Biochemical parameters of blood serum by the end of drug therapy were within the reference values. There were no signs of hematological and general toxicity, according to the WHO scale, requiring corrective therapy, dose reduction or withdrawal of drugs.

Effects of ultrasound-induced stress on gut microbiota of mice.

Prolonged stress causes deleterious effects on both the organism and its microbiota. In this study, we examined the effects of exposure to variable frequency ultrasound (US) on the gut microbiota-liver-brain axis of mice. This study was conducted on 20 mature clinically healthy sexually naive C57BL/6J male mice (42-45 days old). Group 1 (Normal) consisted of healthy intact mice (n = 10). Group 2 (Stress) consisted of mice subjected to US-induced stress (n = 10) for 20 days with alternating frequencies (20-45 kHz). Stool samples were collected on days 0, 10, and 20, and the corresponding DNA was later subjected to 16SrRNA sequencing. After mice were sacrificed on day 21, the leukocyte count, blood serum biochemical parameters, and liver and brain antioxidant status were measured. Behavioral testing was performed on days 17, 18, and 19. Ultrasound lead to higher stress and anxiety levels; increase in creatinine by 8.29% and gamma-glutamyltransferase activity by 5 times, a decrease in alkaline phosphatase activity by 38.23%, increase of de Ritis coefficient by 21.34%; increased liver and brain superoxide dismutase level by 20.8% and 21.5%, respectively; the stress-related changes in the gut microbiota composition - Bacteroidaceae and Firmicutes. Subjecting mice to 20 days of US-induced stress leads to systemic disorders due to oxidative stress and a decrease in the diversity of the gut microbiota.

Анализ биохимических показателей сыворотки крови у больных с ревизионным эндопротезированием тазобедренного сустава и нарушением углеводного обмена

INTRODUCTION: Along with increase in the number of hip arthroplasty surgeries, the number of complications after them also increases. Laboratory diagnostics, being a unified method for determining the risks of complications and relapses, indicates the need for a comparative analysis of standard laboratory parameters in patients with carbohydrate metabolism disorders (CMD) before revision arthroplasty. AIM: To evaluate changes in the biochemical parameters of blood serum of patients with impaired carbohydrate metabolism before revision arthroplasty. MATERIALS AND METHODS: The data of anamnesis, morphometry and main blood parameters of patients who underwent treatment for osteoarticular pathology and purulent osteology in inpatient facility from 2011 to 2019 were processed and analyzed. The first group included 115 patients (33% of the total amount of examined patients) with revision hip arthroplasty having no disorders in carbohydrate metabolism in history. The second group included 103 patients (30%) who underwent revision hip arthroplasty and had diabetes mellitus, impaired glucose tolerance, and early forms of carbohydrate metabolism disorders as comorbidities. The third group included 73 patients (21%) with periprosthetic infection of the hip joint without history of carbohydrate metabolism disorders. The fourth group included 56 patients (16%) with periprosthetic infection, with disorders of carbohydrate metabolism. RESULTS: The results obtained in the study groups were intercompared and compared with the reference intervals established by the reagent manufacturers for each study method. In the studies, no statistically significant differences were found in the biochemical parameters of blood of patients with aseptic revision arthroplasty, depending on the existing disorders of carbohydrate metabolism. When comparing biochemical parameters of blood of patients with periprosthetic infection, statistically significant differences depending on the presence of CMD, were found in three parameters. Patients with disorders of carbohydrate metabolism had higher blood levels of glucose, creatinine and urea, which, however, remained within the normal range. Two biochemical parameters of the blood of patients of all four groups were beyond the standard limits — C-reactive protein and albumin-globulin ratio. In patients with endoprosthesis instability, bilirubin, creatinine, and albumin values changed depending on the presence of an infectious process in the joint, and creatinine and urea, depending on carbohydrate metabolism disorders. CONCLUSIONS: Depending on the presence of an infectious process or disorders of carbohydrate metabolism, these parameters require closer attention in the preoperative period in patients with endoprosthesis instability. Patients with periprosthetic infection of the hip joint with carbohydrate metabolism disorders require laboratory monitoring of kidney function, protein fractions, and C-reactive protein even with normal results of biochemical blood tests.

Вариабельность биохимических показателей крови и установление референтных интервалов в доклинических исследованиях. Сообщение 8: сирийские хомячки

Biochemical parameters of blood serum are important parameters for assessing the health of laboratory animals. The Syrian Hamster is a widely used test system in animal experiments. They have unique anatomical and physiological features, such as optimal body size, large cheek sac, high reproduction rate and short life cycle, which together makes hamsters a convenient test system used in preclinical studies. This type of animal is used not only in the study of toxicological properties and assessment of pharmacological safety, but is also involved in various pharmacodynamic studies as a model organism for studying a wide range of pathological conditions associated with the immune response, respiratory system, carcinogenesis, metabolic disorders. During the study, reference intervals of the main biochemical parameters of the blood of Syrian hamsters were established. This procedure is necessary for an adequate understanding of the condition of animals in the experiment, assessment of the toxicity and safety of new pharmacological substances, control of the formation of model pathologies and evaluation of the effectiveness of pharmacological agents. The values used for the formation of reference intervals were obtained from intact animals for the time period June–December 2022 in Research and manufacturing company “Home оf Pharmacy”. The study included biological samples of 30 males and 30 females of Syrian hamsters. The age of the animals corresponded to the range of 6–8 weeks, the body weight of males and females was in the range of 100–115 grams. The study was carried out in compliance with the principles of the European Convention for the Protection of Vertebrates Used for Experiments and Other Scientific Purposes and in accordance with the rules of good laboratory practice. The determination of the biochemical parameters of interest was carried out under the same conditions using generally accepted preanalytical and analytical methods. Blood sampling from animals was performed using a cardiac puncture. The following parameters were registered in animal serum: creatinine, urea, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, cholesterol, triglycerides, total protein, albumin, globulins, albumin/globulin ratio, glucose, total bilirubin. The obtained reference ranges of biochemical parameters were generally similar to the published data. Differences were found in urea, alkaline phosphatase, alanineaminotransferase, aspartateaminotransferase and glucose — the values were higher than the literature data. For an adequate interpretation of the experimental values obtained, an important aspect in preclinical studies is the establishment of intralaboratory reference intervals for the biochemical blood values of healthy animals in each research laboratory. This is due to the preanalytical and analytical characteristics of the analysis, the breed of animals and the conditions in which they are housed.

Морфобиохимический профиль крови при терапии ингибиторами ЦОГ-2 и циклофосфамидом

Abstract. In modern veterinary medicine, in the last decade, significant achievements have been noted in the treatment of malignant tumors in dogs, but nevertheless the number of oncologically ill animals is quite widespread, and tends to increase further. The use of only traditional methods for the treatment of oncological pathologies (radiation and chemotherapy, surgical) does not have a positive effect, and accordingly does not solve the problem as a whole. The scientific novelty lies in the study of the effect of selective COX-2 inhibitors in combination with cyclophosphamide on the morphobiochemical parameters of the blood of dogs with malignant neoplasms of the breast. The purpose of our work was to study the dynamics of morphobiochemical blood parameters during multimodal conservative therapy of breast cancer recurrence in dogs with selective COX-2 inhibitors (firocoxib, cimicoxib) and cyclophosphamide. Research methods. Clinical observations and studies were carried out in the veterinary clinic of the Center for Animal Beauty and Health “Zoostyle” in Volgograd. The object of the study was 6 female dogs of various breeds aged 10-14 years, with a morphologically confirmed diagnosis of recurrent breast adenocarcinoma. At the same time, an automatic hematological analyzer “Mindray BC-2800 Vet” and a semi-automatic biochemical analyzer “BioChem SA” were used. Stained blood smears were examined under a microscope “MIKMED-5”. Results. The results of the studies show that morphobiochemical blood parameters varied in both groups by the 90th day of therapy. The results obtained convincingly show that the use of a combination of selective COX-2 inhibitors and cyclophosphamide, in clinically significant doses, induced an increase in individual biochemical parameters of blood serum, without symptomatic manifestations. In the firocoxib group, creatinine and urea levels exceeded the reference values by 39.5 and 67.7 %, respectively. Thus, the combination of drugs in the first group demonstrates an increased risk of use in animals with renal insufficiency.