High-density Lipoprotein Concentrations Research Articles

Effect of per os administration of fucoxanthin alcoholic and oil extracts to Balb/c mice on biochemical parameters and serum cytokine level

Microalgae are a source of various biologically active substances, including carotenoids. One of the carotenoids of diatom microalgae is fucoxanthin, which has antioxidant, antimicrobial, antitumour and anti-inflammatory properties that can be used in the treatment of a wide range of human and animal pathologies. The aim of the study was to investigate the effect of alcohol and oil extract of fucoxanthin on biochemical parameters and levels of serum cytokines in mice during intragastric administration. Material and methods. Fucoxanthin extracts from the microalga Nanofrustulum shiloi were used. Mice of Balb/c strain were intragastrically administrated with 0.5 ml of oil (500 μg/ml) or alcoholic extract of fucoxanthin (187.5 μg/ml), mice in the comparison group were given 0.5 ml of olive oil or 45% ethyl alcohol once a day within 5 days. On the 8th day, blood serum was obtained and the level of albumin, triglycerides, cholesterol, low (LDL) and high density lipoproteins (HDL), urea, uric acid, creatinine, aspartate (AST) and alanine aminotransferases (ALT), lactate, stable nitric oxide (NO) metabolites (nitrites), cytokines (IL-1β, IL-6, IL-10, TNF-α, IFN-γ) was determined using ELISA with photometric detection. Results and discussion. In the comparison group, ethyl alcohol promoted an increase in serum triglyceride, cholesterol, LDL, HDL, ALT, AST, nitrite, IL-10, IFN-γ and TNF-α content compared to intact animals. Fucoxanthin alcoholic extract administration increased the level of LDL, HDL, uric acid, TNF-α and decreased albumin, cholesterol, uric acid, creatinine, ALT, AST, IL-6 content compared to control. The olive oil group showed a decrease in serum triglycerides, cholesterol, urea, uric acid, ALT and AST content but an increase in LDL, HDL, nitrite level compared to the control. Administration of fucoxanthin oil extract to animals decreased albumin, triglycerides, cholesterol, HDL, uric acid, ALT, AST, lactate, IL-6, IL-10 compared to control. Conclusions. Thus, it was discovered that fucoxanthin in Balb/c mice contributes to a decrease in hepatic synthetic function, as evidenced by the change in the concentration of albumin, triglycerides, uric acid), influences energy metabolism (creatinine, lactate), cell membrane stability (cholesterol, LDL, HDL), serum transaminase activity, pro- and anti-inflammatory cytokines content.

Evaluation of the Therapeutic Impact of Probiotic-Enriched Orange and Pomegranate Juices on Some Health Parameters in Diarrhea-Induced Laboratory Rats

This research endeavor was undertaken to craft a functional beverage by blending orange and pomegranate juices, enriched with the inclusion of therapeutic probiotic strains, specifically Lactobacillus acidophilus, Lactobacillus plantarum, and Lactobacillus rhamanous. A comprehensive assessment was conducted to investigate the physicochemical, microbial, and sensory characteristics of the resulting beverage. Furthermore, we explored the potential health benefits of this fortified beverage within a rat model afflicted with E. coli infection, focusing on its influence on blood parameters and lipid profiles in male rats. The research findings revealed the presence of four distinct bacterial strains, namely Staphylococcus hominis, Staphylococcus aureus, E. coli, and Enterococcus gallinarum, in natural juices obtained from local markets in Tikrit. Regarding the physicochemical properties and bacterial counts in the manufactured juices, the results indicated a decline in pH levels and total sugar content over time, coupled with an increase in total acidity during refrigerated storage of functional juices. Additionally, the enumeration and viability of fortifying bacteria surpassed the prescribed probiotic threshold in the tested juice varieties. Sensory evaluation outcomes demonstrated the overall acceptability of the manufactured juices. The research findings demonstrated that E. coli-induced diarrhea led to a significant elevation (P<0.05) in key blood parameters, including white blood cell and platelet counts (12.63 and 747 mm^3/liter), along with a notable reduction in red blood cell counts and hemoglobin concentration (6.0 and 13.1 mm^3/liter, respectively). However, oral administration of functional juices resulted in a decrease in white blood cell and platelet counts and an increase in red blood cell counts and hemoglobin concentration across all measured parameters. Regarding lipid profiles, the diarrheal group exhibited elevated levels of detrimental lipid markers, including cholesterol, triglycerides, and low-density lipids (73.59, 71.61, and 14.8, respectively), accompanied by reduced high-density lipoproteins concentration (31.5). Conversely, treatment with oral doses of functional juices led to a reduction in these adverse lipid indicators for all treatment groups.

Prevalence and Physiological Effect of Blastocystis Hominis on Lipid Metabolism, Magnesium, and Zinc Levels in Diarrheal Patients

Blastocystis hominis is a microscopic single-celled organism commonly known as a protist or parasite. It was first discovered in the early 20th century by a Scottish scientist named Alexei Pavlovich Alexeieff. Blastocystis hominis is found in the intestines of humans and other animals, where it can colonize the gastrointestinal tract. The objective of this study was to examine the presence of the Blastocystis hominis parasite in the stool samples of patients experiencing diarrhea and to explore its potential physiological effects. The study involved two groups: 1-the patients group, which consisted of 220 samples who suffered from diarrhea, and abdominal pain and 2-the control group, which consisted of 100 samples of healthy individuals. The age range of participants ranged between 4-40 years. The outcome indicated that the vacuolar form was the most common morphological appearance observed in the stool. The result showed non-significant difference was observed (P&gt;0.05) for all ages. Furthermore, a statistically significant difference (P≤0.05) was observed in the infection rate between males (58.00%) and females (42.00%). The physiological examinations were conducted using Spectrophotometer revealed notable findings. There was a significant increase (P≤0.01) in the levels of cholesterol, low-density lipoproteins-cholesterol (LDL), very low-density lipoproteins (VLDL), and triglycerides (TG), in patients with diarrhea infected with B. hominis compared to the control group. Conversely, concentrations of magnesium, zinc, and high-density lipoproteins (HDL) showed a significant decrease (P≤0.01) in the same patient group compared to the control group. 

SGLT2 inhibition, high-density lipoprotein, and kidney function: a mendelian randomization study.

Sodium-glucose cotransporter 2 (SGLT2) inhibition is recognized for its evident renoprotective benefits in diabetic renal disease. Recent data suggest that SGLT2 inhibition also slows down kidney disease progression and reduces the risk of acute kidney injury, regardless of whether the patient has diabetes or not, but the mechanism behind these observed effects remains elusive. The objective of this study is to utilize a mendelian randomization (MR) methodology to comprehensively examine the influence of metabolites in circulation regarding the impact of SGLT2 inhibition on kidney function. We used a MR study to obtain associations between genetic proxies for SGLT2 inhibition and kidney function. We retrieved the most recent and comprehensive summary statistics from genome-wide association studies (GWAS) that have been previously published and involved kidney function parameters such as estimated glomerular filtration rate (eGFR), urine albumin-to-creatinine ratio (UACR), and albuminuria. Additionally, we included blood metabolite data from 249 biomarkers in the UK Biobank for a more comprehensive analysis. We performed MR analyses to explore the causal relationships between SGLT2 inhibition and kidney function and two-step MR to discover potential mediating metabolites. The study found that a decrease in HbA1c levels by one standard deviation, which is genetically expected to result in SGLT2 inhibition, was linked to a decreased likelihood of developing type 2 diabetes mellitus (T2DM) (odds ratio [OR] = 0.55 [95% CI 0.35, 0.85], P = 0.007). Meanwhile, SGLT2 inhibition also protects eGFR (β = 0.05 [95% CI 0.03, 0.08], P = 2.45 × 10- 5) and decreased UACR (-0.18 [95% CI -0.33, -0.02], P = 0.025) and albuminuria (-1.07 [95% CI -1.58, -0.57], P = 3.60 × 10- 5). Furthermore, the study found that of the 249 metabolites present in the blood, only one metabolite, specifically the concentration of small high-density lipoprotein (HDL) particles, was significantly correlated with both SGLT2 inhibition and kidney function. This metabolite was found to play a crucial role in mediating the improvement of renal function through the use of SGLT2 inhibition (β = 0.01 [95% CI 0.005, 0.018], P = 0.001), with a mediated proportion of 13.33% (95% CI [5.71%, 26.67%], P = 0.020). The findings of this investigation provide evidence in favor of a genetically anticipated biological linkage between the inhibition of SGLT2, the presence of circulating metabolites, and renal function. The findings demonstrate that the protective effect of SGLT2 inhibition on renal function is mostly mediated by HDL particle concentrations in circulating metabolites. These results offer significant theoretical support for both the preservation of renal function and a better comprehension of the mechanisms underlying SGLT2 inhibition.

Lipoprotein dysfunction in patients with chronic kidney disease (CKD). Pathogenesis and treatment of CKD dyslipidemia (literature review)

Dyslipidemia develops in the initial stages of chronic kidney disease (CKD) and worsens as nephropathy progresses. The main manifestation of dyslipidemia is hypercholesterolemia, especially in nephrotic syndrome. However, with CKD of stages 4-5, it is replaced by hypertriglyceridemia in combination with an increase in blood levels of lipoproteins low and very low density. Such changes are closely related to the development of cardiovascular pathology with high mortality. The content of high-density lipoproteins (HDL) in the blood is gradually decreasing, as well as the reversible transport of cholesterol. Thus, their anti-atherogenic, antioxidant and anti-inflammatory functions are lost. The main components of HDL – apolipoproteins ApoA-I and ApoA-II, which provide functionality, are replaced by acute-phase proteins, and HDL lose their cardioprotective potential and acquire a proinflammatory and proatherogenic phenotype. According to modern concepts, HDL dysfunction, along with metabolic shifts, is largely due to epigenetic disorders affecting gene expression and partially eliminated by prescribing drugs containing microRNAs (mRNAs) or antisense nucleotides. Drugs with interfering RNAs created in recent years have been successfully used not only for the treatment of dyslipidemia in nephrological patients, but also in patients with neoplastic processes, inflammatory arthritis, degenerative diseases of the central nervous system, porphyria, hemophilia and many other diseases. The proposed review is devoted to the mechanisms of disorders of the structure and functions of HDL in patients with CKD and the correction of these disorders.

129 Selenium-form affects de novo cholesterol synthesis and catabolism of cholesterol and progesterone in the liver of beef heifers

Abstract A deficiency of selenium (Se) in soils and hence forages poses a challenge to producers in the southeast United States, necessitating supplementation of this trace mineral to the diet of pasture fed cattle. Se occurs in either inorganic (ISe) or organic (OSe) forms; ISe is conventionally available in commercial supplements, while OSe is available in grazed forages. We have investigated supplementation with either ISe or a 1:1 mixture of ISe:OSe (MIX) and demonstrated that MIX increases the relative abundance of mRNA encoding the low-density lipoprotein receptor (LDLR) and enzymes involved in de novo cholesterol synthesis in the corpus luteum, concurrent with a MIX-induced increase in systemic progesterone (P4) during the early luteal phase. We also observed a MIX-induced decrease in circulating cholesterol and low-density/very low-density lipoproteins during early gestation, and a MIX-induced increase in conceptus length at maternal recognition of pregnancy (MRP). The objective herein was to investigate the effect of form of Se (ISe versus MIX) on de novo cholesterol synthesis and cholesterol/steroid catabolism in the liver at MRP. We hypothesized form of Se would affect the abundance of transcripts that regulate synthesis, catabolism, and local concentrations of cholesterol and P4. Angus-cross heifers were supplemented with ISe or MIX for at least 90 d before insemination at observed estrus. On d 17 of pregnancy, heifers (n = 6/TRT) were killed and their reproductive tracts and conceptuses recovered. Hepatic samples were collected for qPCR analysis of mRNA transcripts encoding proteins involved in de novo cholesterol synthesis, regulation of cholesterol availability and steroid catabolism. Additionally, on d 7 and d 17 of pregnancy, we quantified systemic concentrations of high-density lipoproteins (HDL), indicative of cholesterol recycling to the liver. We quantified the relative abundance of 22 mRNAs and observed that heifers supplemented with MIX-form Se had an increase in the relative abundance of mRNA encoding the very low-density lipoprotein receptor (VLDLR, P = 0.01). Unexpectedly, we failed to detect an effect of TRT on the abundance of mRNA encoding the high-density lipoprotein receptor (SCARB1, P &amp;gt; 0.05) which was consistent with our inability to detect an effect on the serum concentration of total or free HDL (P &amp;gt; 0.05) during early pregnancy and at MRP. Of the 11 mRNA transcripts encoding enzymes involved in catabolism of cholesterol and progesterone, including steroid alpha reductases (SRD5A1 and SRD5A3) and cytochrome P450 enzymes (CYP4A2, CYP4A11, CYP11A1, and CYP17A1), we were unable to detect a difference in the relative abundance of any transcript. Overall, it appears that the form of Se is altering circulating concentrations of cholesterol and further affecting whole animal physiology and fertility; however, the mechanism involved remains to be fully elucidated and warrants further investigation.

Mechanistic insights into inositol-mediated rumen function promotion and metabolic alteration using in vitro and in vivo models.

Inositol is a bioactive factor that is widely found in nature; however, there are few studies on its use in ruminant nutrition. This study investigated the effects of different inositol doses and fermentation times on rumen fermentation and microbial diversity, as well as the levels of rumen and blood metabolites in sheep. Rumen fermentation parameters, microbial diversity, and metabolites after different inositol doses were determined in vitro. According to the in vitro results, six small-tailed Han sheep fitted with permanent rumen fistulas were used in a 3 × 3 Latin square feeding experiment where inositol was injected into the rumen twice a day and rumen fluid and blood samples were collected. The in vitro results showed that inositol could increase in vitro dry matter digestibility, in vitro crude protein digestibility, NH3-N, acetic acid, propionic acid, and rumen microbial diversity and affect rumen metabolic pathways (p < 0.05). The feeding experiment results showed that inositol increased the blood concentration of high-density lipoprotein and IgG, IgM, and IL-4 levels. The rumen microbial composition was significantly affected (p < 0.05). Differential metabolites in the rumen were mainly involved in ABC transporters, biotin metabolism, and phenylalanine metabolism, whereas those in the blood were mainly involved in arginine biosynthesis and glutathione and tyrosine metabolism. In conclusion, inositol improves rumen function, affects rumen microorganisms and rumen and blood metabolites and may reduce inflammation, improving animal health.

Efficacy of nutritional selenium nanoparticles on growth performance, immune response, antioxidant capacity, expression of growth and immune-related genes, and post-stress recovery in juvenile Sobaity seabream (Sparidentex hasta)

This study evaluated the impacts of nano-Se on the growth, immunity, antioxidant capacity, physiological parameters, gene expression, and stress resistance of fingerling Sobaity seabream (Sparidentex hasta). The fish with an average weight of 21.5 ± 0.1 g were divided into four treatment groups in triplicates that received one of the test diets supplemented with varying levels of nano-Se: 0 (control), 0.5 (Se-0.5), 1 (Se-1), and 2 (Se-2) mg/Kg for 60 days. The results showed that final weight, weight gain rate, specific growth rate, feed intake, and feed conversion ratio improved with significant linear and quadratic trends (P < 0.05) in response to nano-Se-supplemented diets, and the best values were measured in the Se-2 group. Superoxide dismutase activity level remained unaffected among the four groups (P > 0.05). Catalase activity increased in nano-Se-supplemented groups, with the highest level measured in fish fed the Se-0.5 diet. Glutathione peroxidase activity levels were not significantly different between the control and nano-Se groups, but the lowest malondialdehyde concentration was detected in the Se-2 group. Nano-Se had no marked effect on total plasma Ig levels; however, the highest lysozyme activity and alternative complement activity (ACH50) were observed in the Se-0.5 and Se-2 groups, respectively. No significant differences (P > 0.05) were observed in plasma total protein, albumin, globulin, triglyceride, and thyroid hormone (T3 and T4) contents among the groups. However, the lowest cholesterol and low-density lipoprotein values and the highest high-density lipoprotein concentration were measured in the Se-2 group. The Se-0.5 and Se-1 groups exhibited significantly lower levels of aspartate aminotransferase activity, and the lowest alkaline phosphatase activity level was detected in the Se-1 group. The expression level of insulin-like growth factor I gene in all nano-Se-fed groups was significantly higher than the control. Also, the expression of interleukin-1β and lysozyme genes was significantly upregulated in nano-Se-supplemented groups, with the highest values in the Se-2 group. Following acute crowding stress, plasma cortisol and lactate levels at all post-stress time intervals were not significantly different among the experimental groups. Fish fed the Se-0.5 and Se-2 diets tended to have lower plasma glucose concentrations than other groups. In conclusion, dietary nano-Se at 2 mg/kg is recommended to promote growth performance and enhance antioxidant and immune parameters in Sobaity juveniles.

Toxic effects of clindamycin-hydrochloride in healthy rodents

Background: Systemic administration of clindamycin-hydrochloride (an antibiotic) is mainly associated with gastro-intestinal disturbances and allergic reactions. Little is known of its haematological and biochemical toxicity.&#x0D; Objective: To evaluate the haematological and biochemical changes associated with indiscriminate administration of oral clindamycin-hydrochloride in clinically healthy rodents.&#x0D; Materials and Methods: Twenty Wistar rats (130-189 grams) divided into four groups (A-D) of five rats each were used. Rats in group A (control) were treated with distilled water. Groups B-D received 0.2mL (below normal dose), 0.4mL (normal dose) and 1.0mL (above normal dose) of clindamycin-hydrochloride (75mg/5mL) at 8 hourly intervals, three times daily for 14 days, respectively. Thereafter, blood was collected through both ocular and cardiac puncture into ethylene diamine tetra acetic acid (EDTA) and lithium heparin bottles for evaluation of haematological and biochemical parameters, respectively.&#x0D; Results: Significant (P &lt; 0.05) increases in total white blood cell (WBC) counts and decreases in eosinophil (Eos) counts occurred in clindamycin-treated rats. In addition, significant (P &lt; 0.05) increases in concentrations of Total cholesterol, Triglyceride and High-density lipoprotein, respectively, as well as decreases in concentrations of Albumin, Alanine transaminase and Gamma-glutamyl transpeptidase, respectively also occurred in clindamycin-treated rats.&#x0D; Conclusion: Indiscriminate use of clindamycin-hydrochloride produces adverse haematological and biochemical changes in Wistar rats which may be a reflection of systemic toxicity, allergic reaction as well as liver and kidney dysfunction.

Can Rosuvastatin Reduce the Risk of Thrombosis in Patients with Hypercholesterolemia with its Effect on Coagulation Factors and Homocysteine Levels?

Hypercholesterolemia is one of the main risk factors for vascular thrombosis in individuals. Therefore, the use of statins is very effective in reducing cholesterol and can reduce the risk of thrombosis in these patients. Rosuvastatin, a member of the statin family which, inhibits cholesterol synthesis. Very few studies have been done in relation to how rosuvastatin can affect thrombosis. So, this research has been tried whether rosuvastatin can have an effect on coagulation factors and homocysteine as risk factors for thrombosis in hypercholesterolemia? In this experimental study, 60 patients (30 men and 30 women with a mean age of 40- 70 years) diagnosed with hypercholesterolemia (cholesterol >250 mg/dl) participated in this research. 30 patients were prescribed rosuvastatin (20 mg/day), and 30 patients were simultaneously taken placebo for three months. All parameters, including FVIII, FV, Fibrinogen, D-Dimer, plasma homocysteine level and lipid profile, were measured before and after treatment. All the results were statistically compared between the two groups. In patients who took rosuvastatin, the drug was able to significantly reduce the concentrations of total cholesterol, triglycerides, high-density lipoprotein (HDL) and low-density lipoprotein (LDL) (P <0.001). Also, rosuvastatin was able to reduce the concentrations of homocysteine significantly, D-Dimer (P <0.001), coagulation factor VIII and factor V (P <0.05). In patients with hypercholesterolemia who took the placebo, did not affect the mentioned variables (P >0.05). According to the results, it seems that rosuvastatin may be able to reduce the risk of thrombosis in patients by affecting coagulation factors and homocysteine levels.

The association between dyslipidaemia in the first trimester and adverse pregnancy outcomes in pregnant women with subclinical hypothyroidism: a cohort study

BackgroundSubclinical hypothyroidism (SCH) is linked to dyslipidaemia and adverse pregnancy outcomes. However, the impact of dyslipidaemia on the outcome of pregnancy in SCH is unclear.MethodsWe enrolled 36,256 pregnant women and evaluated their pregnancy outcomes. The following data was gathered during the first trimester (≤ 13+ 6 weeks of gestation): total cholesterol (TC), low-density lipoprotein (LDL-C), triglyceride (TG), high-density lipoprotein (HDL-C), free thyroxine (FT4) and thyroid-stimulating hormone (TSH) concentrations. The reference ranges for lipids were estimated to range from the 5th to the 95th percentile. Logistic regression assessed the relationships between dyslipidaemia and adverse pregnancy outcomes, including abortion, preeclampsia/eclampsia, low birth weight, foetal growth restriction, premature rupture of foetal membranes, gestational hypertension, preterm birth, macrosomia and gestational diabetes mellitus (GDM). Additionally, the best thresholds for predicting adverse pregnancy outcomes based on TSH, FT4, and lipid levels were determined using receiver operating characteristic curves.ResultsIn the first trimester, LDL-C > 3.24 mmol/L, TG > 1.92 mmol/L, HDL-C < 1.06 mmol/L, and TC > 5.39 mmol/L were used to define dyslipidaemia. In this cohort, 952 (3.56%) patients were diagnosed with SCH, and those who had dyslipidaemia in the first trimester had higher incidences of gestational hypertension (6.59% vs. 3.25%), preeclampsia/eclampsia (7.14% vs. 3.12%), GDM (22.53% vs. 13.77%), and low birth weight (4.95% vs. 2.08%) than did those without dyslipidaemia. However, after adjusting for prepregnancy body mass index (pre-BMI), dyslipidaemia was no longer related to these risks. Furthermore, elevated TG dyslipidaemia in SCH patients was connected to an enhanced potential of gestational hypertension (odds ratio [OR]: 2.687, 95% confidence interval [CI]: 1.074 ~ 6.722), and elevated LDL-C dyslipidaemia correlated with increased preeclampsia/eclampsia risk (OR: 3.172, 95% CI: 1.204 ~ 8.355) after accounting for age, smoking status, alcohol use, pre-BMI, and levothyroxine use. Additionally, the combination of TC, TG, LDL-C, pre-BMI, and TSH exhibited enhanced predictive capabilities for gestational hypertension, preeclampsia/eclampsia, and GDM. Values of 0.767, 0.704, and 0.706 were obtained from the area under the curve.ConclusionsAmong pregnant women with SCH, dyslipidaemia in early pregnancy was related to elevated risks of adverse pregnancy consequences. The combined consideration of age, pre-BMI, TSH, and lipid levels in the first trimester could be beneficial for monitoring patients and implementing interventions to reduce adverse pregnancy outcomes.

Дія мелатоніну та кверцетину на запалення i метаболізм за умов цілодобового освітлення та висококалорійної вуглеводно-ліпідної дієти

The study is aimed at investigating the impact of exogenous melatonin and quercetin on indices of systemic inflammatory response and indicators of carbohydrate and lipid metabolism in the blood serum of male rats exposed to round-the-clock lighting (RCL) with 1500 lx intensity during the last 30 days of being kept on a 60 day high-calorie carbohydrate-lipid diet (HCCLD, 20% fructose solution and the proper chow). The study has demonstrated that the restoration of serum melatonin concentration in rats by its exogenous administration during the RCL exposure and keeping them on HCCLD did not fully correct the indicators of the systemic inflammatory response such as the content of tumor necrosis factor α (TNF-α) and C-reactive protein (CRP), as well as indices of carbohydrate and lipid metabolism such as concentration of insulin, highdensity lipoprotein (HDL), very low-density lipoprotein (VLDL) and triglycerides, HOMA-IR insulin resistance index. The administration of quercetin under the experimental conditions was accompanied by a significant increase in the serum melatonin concentration (by 85.9%), a decrease in the content of TNF-α (by 53.9%), CRP (by 54.4%), glucose (by 49.2%), insulin (by 49.6%), VLDL (by 49, 2%) and triglycerides (by 49.3%), and an increase in HDL concentration (by twofold), but these indicators (with the exception of the HOMA-IR index, which decreased by 62.4%) did not reach the values of the intact group. The combined effect of melatonin and quercetin under RCL exposure and HLLD significantly improved the indicators of systemic inflammatory response, carbohydrate and lipid metabolism that is confirmed by a more significant decrease in serum levels of TNF-α, CRP, insulin, VLDL and triglycerides, an increase in HDL concentration, and a decrease in the HOMA-IR index compared with the separate use of melatonin and quercetin.

Fatty acid profiles and cholesterol of muscovy duck meats supplemented with cellulase, carnitine and fish oil

This present study was carried out to investigate the inclusion effect of carnitine, cellulase, and fish oil on fatty acids composition and cholesterol level of Muscovy duck eggs. A total of 120 Muscovy ducks in laying period were utilized and assigned into 4 dietary treatments, 5 replicates consisting of 6 ducks each, receiving treatments for 90 days. Experimental groups composed of T0 = basal ration, T1 = T0 supplemented with 0,1% cellulase, T2 = T1 supplemented with L-carnitine 40 ppm, and T3 = T2 supplemented with 4% tuna fish oil. This study revealed that the effects of fish oil and L-carnitine supplementation in rations containing cellulase enzyme significantly lower cholesterol level (P<0.01) of Muscovy duck eggs from 867.42 mg/dl to 712.33 mg/dl, Low Density Lipoprotein (LDL) from 28.33 to 22.12 mg/dl, saturated fatty acids from 30.88% to 25.02%. Meanwhile it increased the total concentration of High Density Lipoprotein (HDL) from 71.67 to 77.88 mg/dl, unsaturated fatty acid from 69.12% to 74.98%, linolenic acids from 5.71% to 8.40%, and linoleic acids from 28.74% to 37.30%. A diet rich in cellulase enzyme, carnitine, and fish oil notably increased HDL level, along with the reduction of LDL and total cholesterol.

Use of tannase-producing bacteria isolated from the rumen to improve the nutritional value of pomegranate peel for fattening lambs.

The use of plants and by-products, which are containing a high amount of secondary and anti-nutritional compounds such as tannins, in animal feed is limited. The methods that can reduce these compounds make facilitate their use in animal feed. The aim of this study was to reduce the adverse effects of pomegranate peel (PP) tannin for fattening lambs using the tannase-producing bacteria. Twenty-one Arabi male lambs (averagely 35±3.8kg weight and 8±1.0 months age) were used in a completely randomized design with three treatments and seven replications in the present experiment. The experimental treatments included 1 - control diet (CNT, no PP), 2 - diet containing untreated PP (raw PP, UTPP) and 3 - diet containing PP treated with tannase-producing bacteria (bacteria treating PP, BTPP). Using UTPP decreased nutrient intake compared to the control and treatment with tannase-producing bacteria again significantly increased nutrient intake compared to the UTPP (p<0.05). The digestibilities of organic matter, neutral detergent fibre and acid detergent fibre in the control treatment were significantly higher than UTPP and BTPP and in the BTPP were significantly higher than the UTPP (p<0.05). The use of UTPP in the diet significantly decreased the pH, ammonia nitrogen concentration and the total protozoa population of the rumen compared to the control (p<0.05), and treatment with bacteria increased them again. The lowest total protozoa population was observed in UTPP treatments (p<0.05). The highest concentration of blood glucose was observed in UTPP; however, the highest concentrations of blood urea nitrogen, cholesterol, triglyceride, high-density lipoprotein (non-significant) and low-density lipoprotein were in the control treatment. The effect of experimental treatments on the dry matter consumption of the whole period was significant; however, there was no significant effect on average daily gain, feed conversion ratio, feed efficiency and longissimus muscle colorimetric systems. Therefore, considering the positive effects of treatment PP with tannin-degrading bacteria relative to raw PP, using these bacteria is a proper way to reduce tannin, thus improving the nutritional value of PP for ruminants.

Effects of quercetin and daidzein on egg quality, lipid metabolism, and cecal short-chain fatty acids in layers.

In this study, the effects of quercetin and daidzein on egg quality, lipid metabolism, and cecal short-chain fatty acids (SCFAs) were compared in layers. Hyline brown layers at 385 days of age with a similar laying rate (81.36% ± 0.62%) and body weight (2.10 kg ± 0.04 kg) were randomly divided into three treatments, six replicates per treatment, and 20 layers per replicate. Layers in control, quercetin, and daidzein treatment were fed by a basal diet supplemented with 0 mg/kg, 500 mg/kg quercetin, and 30 mg/kg of daidzein for 10 weeks. Results showed that eggshell strength and albumen height in week 4, egg yolk diameter in week 10, and eggshell thickness and egg yolk height in weeks 4 and 10 were significantly increased in the quercetin treatment (P ≤ 0.05); contents of phospholipid (PL) and lecithin (LEC) in egg yolk and high-density lipoprotein (HDL) content in serum were significantly increased; however, contents of malondialdehyde (MDA), total cholesterol (TC), and triglyceride (TG) in egg yolk, contents of TC, TG, low-density lipoprotein (LDL), and very-low-density lipoprotein (VLDL) in serum, and contents of TC and TG in the liver were significantly decreased in the quercetin treatment (P ≤ 0.05); contents of isobutyric acid and valeric acid were significantly increased in the cecum of the quercetin treatment (P ≤ 0.05), compared with control. Moreover, egg yolk height in week 10 and eggshell thickness in weeks 4 and 10 were significantly increased in the daidzein treatment (P ≤ 0.05); contents of MDA, TC, and TG in egg yolk, TC, TG, and VLDL in serum, and TC and TG in liver were significantly decreased in the daidzein treatment (P ≤ 0.05); and HDL content was significantly increased in serum of the daidzein treatment (P ≤ 0.05) compared with control. However, daidzein did not affect SCFA content in the cecum. In conclusion, egg quality was improved by quercetin and daidzein by increasing the antioxidant ability of egg yolk and by regulating lipid metabolism in layers. Quercetin worked better than daidzein in improving egg quality under this experimental condition.

Impacts of willow (Salix babylonica L.) leaf extract on growth, cecal microbial population, and blood biochemical parameters of broilers

The investigation examined the use of willow leaf extract (WLE) on broiler chickens, examining carcass characteristics, cecal microbiota, antioxidants, and blood parameters. In 4 groups of 300 chicks, a basal diet was given for 5 wk, and the first treatment was basal diet (C). The diets for the remaining 3 treatments (WLE150, WLE300, and WLE450) contained 150, 300, and 450 mg of willow leaf extract /kg, respectively. The study found that birds fed willow leaf extract supplements had significantly greater body weight (BW), body weight gain (BWG), and enhanced feed conversion ratio (FCR) vs. the control group. Birds fed at 450 mg/kg food showed the greatest growth features, carcass weight, liver weight, lower abdominal fat, better low-density lipoprotein (LDL), and high-density lipoprotein (HDL) concentrations, and highest hematological characteristics. Chickens fed diets supplemented with varied doses of willow leaf extract showed significantly increased antioxidant enzyme activity, with higher amounts of glutathione peroxidase (GPx) activity, superoxide dismutase (SOD), total antioxidant capacity (TAC), and lower malondialdehyde (MDA). However, in the study, birds fed a diet supplemented with 450 mg of willow leaf extract per kg meal showed a significant drop of 13.02%, which found no significant variations in hazardous bacteria (Escherichia coli) across 2 treatments (WLE150 and WLE300). In addition, the study discovered that birds fed with varied doses of willow leaf extract had fewer cecum infections (Staphylococci aureus). We conclude that using willow at a level of 450 mg/kg diet can significantly enhance the BWG, FCR, antioxidant levels and beneficial bacteria activity besides the condition of broiler chicken's general health.

Physiological Effects of Nano-Magnesium Against Bisphenol A-induced Toxicity in Male Albino Rats

This study was conducted to determine the effect of oral administration with two concentrations of 30% and 40% of nano-magnesium on Bisphenol-A in liver enzyme parameters (ALT, AST, ALP), kidney function and lipid profile of male white rats Bisphenol-The concentrations of triglycerides (TG), cholesterol (TC), low-density lipoproteins (LDL), and very low-density lipoproteins (vLDL) were all increased by A, whereas the concentration of high-density lipoproteins (HDL) was decreased. while liver enzyme parameters decreased noticeably. Nano-magnesium treatment led to decreases in levels of uric acid, creatinine, triglycerides, cholesterol, low-density lipoprotein, very low-density lipoprotein, and an increase in high-density lipoprotein (HDL) values.

Суточное потребление жиров и параметры липидного профиля крови у студентов вуза на первом-втором годах обучения

New educational environment of the university and changes in social and living conditions are factors that strain the adaptation mechanisms of first-year students. Inadequate diet can decrease the body’s adaptive and compensatory capabilities and affect its basic functions. The purpose of this research was to study the dynamics of the actual fat content in the diet and key markers of lipid metabolism in the blood of university students in their first and second years of study living in a dormitory. Materials and methods. The same sample of healthy students of both sexes (n = 62) aged 18–21 years studying at Gorno-Altaisk State University were examined in 2020 and 2021. Diet information was obtained through a 7–10-day food diary. Blood concentrations of total cholesterol, low- and high-density lipoproteins as well as triglycerides were determined. Results. Daily fat intake of female students (n = 31) in their second year of study (compared with the first year) statistically significantly increased by 9.3 g. At the same time, the girls showed an increase in total cholesterol by 0.2 mmol/l and in triglycerides by 0.2 mmol/l. In the group of male students (n = 31), no statistically significant increase in dietary fats was observed in the second year. However, triglyceride concentrations in the blood plasma of male subjects increased by 0.1 mmol/l. High-density lipoprotein content increased in the second year in both sex groups: by 0.5 mmol/l in female and by 0.2 mmol/l in male respondents. Blood concentrations of low-density lipoproteins remained unchanged during the observed period in both male and female subjects.

BLOOD PROTEIN SPECTRUM AFTER FEEDING RATS WITH METAL COMPLEXES IN THE COMPOSITION OF A POLYMER TRANSPORTER AND A NUTRIENT-DEFICIENT DIET

The content of total protein and its spectrum in the blood were studied when rats were fed metal complexes (ME; Fe+2/+3-, Zn+2-, Cu+2 - and Mn+2-) as part of a polymer transporter (MEmLPEG400) and a diet deficient in nutrients.&#x0D; It was found that when fed a complete diet, the content of total protein in the blood plasma of rats is 107.5±3.0 g/l and is 15.6 - 17.8% higher in the experimental groups. At the same time, in the blood plasma of animals of the experimental groups, the content of γ-globulins is 2.3 - 2.9 times (р &lt; 0.05 - 0.001) higher than in rats fed a complete diet, while the content of albumin, on the contrary, is reduced. The content of β-globulins is maximum (18.6±1.42%) in control animals and is 6.8 - 11.6% (p &lt; 0.05 - 0.001) lower than when fed wheat groats and metals in mLPEG400. With the addition of Cu+2-mLPEG400 to the diet, the content of α-globulins in the blood plasma of rats increases by 10.8% (p &lt; 0.01), and with Zn+2-mLPEG400 the content of prealbumin increases on 1.1 - 1.3% (p &lt; 0.01), compared to the control and when feeding wheat groats.&#x0D; In the spectrum of lipoprotein fractions, the content of chylomicrons is lower by 10.3% (р &lt; 0.05) after feeding wheat groats, however, with the addition of Mn+2-mLPEG400, on the contrary, the value is 13.6% (р &lt; 0.05) higher, compared to the control.&#x0D; In the blood plasma of rats fed wheat groats and Cu+2- and Zn+2-mLPEG400, the content of very low-density lipoproteins, as well as low-density lipoproteins (p &lt; 0.01 - 0.001), increased with the addition of Cu+2-mLPEG400, compared to animals for feeding a complete diet. In contrast, the content of high-density lipoproteins is 3.6% (р &lt; 0.05) lower after feeding wheat groats and after adding metals in mLPEG400: Cu+2 – by 4.1% (р &lt; 0.05), Fe +2/+3 – 4.2% (p &lt; 0.05), Zn+2 – 3.2% (p &lt; 0.05).&#x0D; The content of fatty acids adsorbed on albumin in the blood plasma of animals of the control group and when fed wheat groats does not differ (21.1 - 23.9%) and decreases by 7.1 – 12.7% (р &lt; 0.05 - 0 .01) in rats that received metals in the composition of the polymer.

Determination of biochemical and histopathological changes on testicular and epididymis tissues induced by exposure to insecticide Imidacloprid during postnatal development in rats

BackgroundImidacloprid is a neonicotinoid insecticide belonging to the chloronicotinyl nitroguanidine chemical family. Toxicity of IMD for mammals in scientific studies has shown high mutagenic, immunotoxic, teratogenic and neurotoxic effects. The present study was designed to assess the toxic effects of imidacloprid (IMD) on the testicular and epididymis tissues as well as testosterone levels of neonatal male rats.MethodsNeonatal male rats from postnatal day (PND) 1 to PND 26 were consecutively administered with different concentrations of IMD (1, 5 and 10 mg/kg) subcutaneously. The effect of IMD on body and organ weight, lipid profile, histopathological alterations, oxidative stress and altered testosterone levels were assessed in the testis and plasma.ResultsThe results of body weight gain showed a significant difference in group 4 (10 mg/kg) animals as compared to the control. A significant increase in total cholesterol and triglycerides, while a decrease in high-density lipoprotein concentrations was evident. Similarly, a significant decrease in concentrations of antioxidant enzymes (CAT and SOD) among all the IMD-treated groups was evident, when compared to the control. Increased production of ROS was also noticed in the highest-dose treatment group. Further, we observed that IMD-treated rats indicated histopathological changes in the testis and epididymis along with a significant decrease in the plasma testosterone concentrations among IMI-treated groups in contrast to the control. Histological examination of the testis of IMD-treated neonatal male rats also showed decreased spermatogenesis in the treated groups when compared to the control. Furthermore, an increase in lumen diameter and a decrease in epithelial height of seminiferous tubules were also observed in IMD-treated rats in comparison with the control.ConclusionIt is concluded that sub-chronic exposure to IMD in neonatal male rats may induce histopathological changes in reproductive tissues and damage normal testicular functions via inducing oxidative stress, decrease in body weight, disturbing normal blood lipid profile and testosterone concentration. IMD exposure can induce pathophysiological effects calls for further evaluation of this widely used insecticide.