Tissues Of Female Rats Research Articles

Distribution of progesterone receptors and the membrane component of progesterone receptor in various organs and tissues of male and female rats

Progesterone regulates reproductive processes and affects many functions of various non-reproductive organs. Its effects in mammals and humans are mediated by nuclear (nPRs) and membrane progesterone receptors (mPRs). The action of progesterone through different types of receptors may differ significantly and has tissue specific features. The expression of known types and subtypes of progesterone receptors in the tissues of male and female rats has been studied fragmentarily. The purpose of our work was to study the expression of five mPRs genes, as well as the nPRs gene and the membrane component of the progesterone receptor PGRMC I in the reproductive organs and in 17 non-reproductive tissues of male and female rats using reverse transcription followed by real-time PCR. In this study, it was shown that a high level of nPRs gene expression in rats is found not only in reproductive organs of females (uterus, ovary, mammary glands), but also in seminal vesicles of males, in the brain and trachea of both sexes, in blood vessels, and in the pancreas of females. The highest level of expression of mPRs genes of all subtypes was found in the testes, while expression of the gene encoding nPRs was practically undetectable in them. Expression of genes encoding mPRs was also detected in the liver and spleen of male and female rats, while expression of the gene encoding nPRs was at background levels. Virtually no expression of nPRs, mPRs, and membrane component of progesterone receptor (PGRMC I) genes was detected in muscle, and its level was very low in the heart in animals of both sexes. We found sex-specific differentiation of nuclear and membrane receptor mRNA levels in rats in non-reproductive tissues, characterized by a predominance of nPRs transcripts and three subtypes of mPRs (α, β, δ) in females and two subtypes of mPRs (γ, ε) in males. Data on the presence of progesterone receptors in tissues not involved in reproduction confirm the effect of progesterone on these organs. High levels of mRNA for various progesterone receptors in the tissues of male rats, such as the pancreas, lungs, kidney, and trachea, indicate an important physiological role of progestins not only in females, but also in males, which is still poorly understood. The work also discusses the known functions of progesterone receptors in the tissues studied.

Examining the Cardioprotective Effects of Aerobic Exercise Combined with Crocin or Berberine on Methamphetamine-Induced Heart Damage in Female Rats

Background: While the harmful effects of methamphetamine abuse on the heart are well-known, the solutions to deal with these damages are not well-known. Objectives: This study aimed to investigate whether aerobic exercise combined with supplements such as Crocin and Berberine can potentially protect against methamphetamine-induced changes in the heart tissue of female rats. Methods: Forty-two female rats were randomly assigned into seven groups (n = 6). The groups included healthy control, methamphetamine, methamphetamine + exercise, methamphetamine + Crocin, methamphetamine + Berberine, methamphetamine + exercise + Crocin, and methamphetamine + exercise + Berberine group. Methamphetamine (10 mg/kg) was injected intraperitoneally over five days. The animals were administered Crocin via intraperitoneal injection at 40 mg/kg during a four-week withdrawal period. At the same time, Berberine was dissolved in drinking water at 100 mg/kg concentration. The aerobic training consisted of running at 25 m/min for 30 minutes. A light microscope was used to observe the structural changes. Data analysis was performed using non-parametric Kruskal-Wallis and Mann-Whitney U tests by SPSS 26, with a significance level of 5%. Results: The results of the study indicate that methamphetamine use causes hyperemia, inflammation, and histopathological damage in the heart cells and tissue (P = 0.001). The combination of exercise with Crocin significantly eliminated methamphetamine-induced heart tissue damage (P = 0.001) and improved cardio-respiratory endurance compared to control (P = 0.004) and methamphetamine (P = 0.01) groups. The combination of aerobic exercise with Berberine removed methamphetamine-induced heart cell damage (P = 0.001), and improved cardio-respiratory endurance compared to control (P = 0.024) and methamphetamine (P = 0.05) groups. In addition, all intervention groups showed a significant reduction in hyperemia and inflammation compared to the methamphetamine group (P = 0.001). Conclusions: A combination of exercise with either Crocin or Berberine supplements demonstrated potential benefits in mitigating some of the harmful structural effects of methamphetamine and improving cardio-respiratory endurance.

Impact of Energy Drinks on kidney Tissue and Oxidative Stress in Female Wistar Rats and Their Neonates

Impact of Energy Drinks on kidney Tissue and Oxidative Stress in Female Wistar Rats and Their Neonates

The Protective Effect of on The Reproductive System and Some Visceral Organs (Liver, Spleen) Tissues of Female Rats Exposed to High Dose of Zinc Sulphate in Drinking Water

The Protective Effect of on The Reproductive System and Some Visceral Organs (Liver, Spleen) Tissues of Female Rats Exposed to High Dose of Zinc Sulphate in Drinking Water

Evaluating the Histopathological Effects of Short-term and Long-term Doses of Ketamine Injection on Heart Tissue of Male and Female Rats

Introduction: Ketamine is a general anesthetic drug that acts by inhibiting the NMDA receptoran important component of excitatory neurotransmission. Existing of NMDA receptors all over the central nervous system and the special type of anesthesia induced by ketamine, called dissociative anesthesia has led to its use as an analgesic and also paved the way for abuse. Ketamine affects the cardiovascular system by increasing indices such as heart rate, blood pressure, and cardiac output. Methods: For further evaluation of ketamine effects on heart tissue, we used 15 male and 15 female Wistar rats and divided them into 6 groups, including male and female control groups (MC and FC), male and female short-term exposure (MS and FS), and male and female long-term exposure (ML and FL) to ketamine. Each group included 5 Wistar rats. The ML and FL groups received 75mg of ketamine once a week for 4 weeks in the posterior muscle of the thigh and the MS and FS groups received 25mg of ketamine 3 times a week for 4 weeks at the same site. Results: After preparation of histopathological slides, it was observed that only in the group of female mice receiving long-term ketamine, empty spaces and intercellular distances increased, and in the group of male mice receiving long-term ketamine, in addition to the increase of intercellular spaces, tissue accumulations were also observed in the heart tissue. Conclusion: This study showed that long-term ketamine injection in both sexes can cause some qualitative changes in heart tissue. Expanding the duration of long-term exposure to ketamine and more studies based on sexes can lead to more findings.

Investigation of the relationship between inflammation and microbiota in the intestinal tissue of female and male rats fed with fructose: Modulatory role of metformin.

It has been reported that High-Fructose (HF) consumption, considered one of the etiological factors of Metabolic Syndrome (MetS), causes changes in the gut microbiota and metabolic disorders. There is limited knowledge on the effects of metformin in HF-induced intestinal irregularities in male and female rats with MetS. In this study, we investigated the sex-dependent effects of metformin treatment on the gut microbiota, intestinal Tight Junction (TJ) proteins, and inflammation parameters in HF-induced MetS. Fructose was given to the male and female rats as a 20% solution in drinking water for 15weeks. Metformin (200mg/kg) was administered by gastric tube once a day during the final seven weeks. Biochemical, histopathological, immunohistochemical, and bioinformatics analyses were performed. Differences were considered statistically significant at p < 0.05. The metformin treatment in fructose-fed rats promoted glucose, insulin, Homeostasis Model Assessment of Insulin Resistance Index (HOMA-IR), and Triglyceride (TG) values in both sexes. The inflammation score was significantly decreased with metformin treatment in fructose-fed male and female rats (p < 0.05). Moreover, metformin treatment significantly decreased Interleukin-1 Beta (IL-1β) and Tumor Necrosis Factor-Alpha (TNF-α) in ileum tissue from fructose-fed males (p < 0.05). Intestinal immunoreactivity of Occludin and Claudin-1 was increased with metformin treatment in fructose-fed female rats. HF and metformin treatment changed the gut microbial composition. Firmicutes/Bacteroidetes (F/B) ratio increased with HF in females. In the disease group, Bifidobacterium pseudolongum; in the treatment group, Lactobacillus helveticus and Lactobacillus reuteri are the prominent species in both sexes. When the male and female groups were compared, Akkermansia muciniphila was prominent in the male treatment group. In conclusion, metformin treatment promoted biochemical parameters in both sexes of fructose-fed rats. Metformin showed a sex-dependent effect on inflammation parameters, permeability factors, and gut microbiota. Metformin has partly modulatory effects on fructose-induced intestinal changes.

The mitochondrial multi-omic response to exercise training across rat tissues

Mitochondria have diverse functions critical to whole-body metabolic homeostasis. Endurance training alters mitochondrial activity, but systematic characterization of these adaptations is lacking. Here, the Molecular Transducers of Physical Activity Consortium mapped the temporal, multi-omic changes in mitochondrial analytes across 19 tissues in male and female rats trained for 1, 2, 4, or 8weeks. Training elicited substantial changes in the adrenal gland, brown adipose, colon, heart, and skeletal muscle. The colon showed non-linear response dynamics, whereas mitochondrial pathways were downregulated in brown adipose and adrenal tissues. Protein acetylation increased in the liver, with a shift in lipid metabolism, whereas oxidative proteins increased in striated muscles. Exercise-upregulated networks were downregulated in human diabetes andcirrhosis. Knockdown of the central network protein 17-beta-hydroxysteroid dehydrogenase 10 (HSD17B10) elevated oxygen consumption, indicative of metabolic stress. We provide a multi-omic, multi-tissue, temporal atlas of the mitochondrial response to exercise training and identify candidates linked to mitochondrial dysfunction.

Effects of high-calorie diet-induced visceral obesity on reproductive hormones and muscle tissues in male and female Wistar rats

Overweight and obesity are associated with alterations in the reproductive system, which affect the anabolic supply to peripheral muscle tissues. The study aimed to investigate the effects of a high-calorie diet (HCD) on the development of obesity, reproductive hormone levels, and morphofunctional characteristics of muscle tissues in Wistar rats (i.e., 54 sexually mature male and female Wistar rats) for 16 weeks. Male rats fed with an HCD displayed (i) visceral obesity and hypogonadism, (ii) a decrease in the mass of the musculus triceps surae, (iii) increased levels of total protein, cholesterol, glucose, lactate, lactate dehydrogenase, and malonic dialdehyde (MDA) and superoxide dismutase (SOD) activities, and (iv) stable concentrations of estradiol and testosterone in the muscle tissues. In contrast, female rats fed with HCD displayed (i) visceral obesity, (ii) alterations in reproductive hormones toward hyperandrogenism, (iii) decreased metabolism in the muscle tissues, and (iv) increased levels of estradiol and MDA (without SOD activation). The cross-sectional area of the muscle fiber was significantly reduced by 20% in male and 44% in female rats on HCD. In addition, the total muscle edema was reportedly increased by twofold in both male and female rats. In summation, obese male and female rats developed an imbalance of reproductive hormones and alterations in muscle tissue metabolism.

Nigella sativa oil restores hormonal levels, and endocrine signals among thyroid, ovarian, and uterine tissues of female Wistar rats following sodium fluoride toxicity

The current study aimed to explore the possible prophylactic and therapeutic effect of Nigella sativa L. oil (NSO) against disruption of endocrine signals and injuries in the thyroid gland, ovary, and uterine tissues induced by sodium fluoride (NaF). Twenty-eight mature female Wistar rats were randomly allocated into four experimental groups (n = 7/group) as follows: control group; NaF group, orally received NaF (20 mg/kg b.wt.) daily; NSO/NaF, orally received NSO (300 mg/kg b.wt.) two weeks before being given NaF and continued throughout the experiment; and NSO+NaF group orally received NSO concurrently with NaF. Our results indicated that NSO restored hormonal balance and suppressed oxidative damage and inflammation. Moreover, the levels of triiodothyronine, thyroxine, thyroid peroxidase, estrogen (E2), progesterone, follicle-stimulating hormone, and luteinizing hormone were elevated, while prostaglandins F2-α and cortisol levels were decreased in NSO treated groups compared to NaF-intoxicated rats. As well, NSO significantly boosted levels of antioxidant molecules, and lowered lipid peroxidation of examined tissues, unlike NaF-treated group. NSO also up-regulated antioxidant enzymes, anti-apoptotic protein, zona pellucida sperm-binding protein, bone morphogenetic protein, and thyroid stimulating hormone, conversely down-regulated inflammatory cytokines, apoptotic proteins, estrogen receptor-α, estrogen receptor-β, and thyroid stimulating hormone receptors compared to NaF-intoxicated group. Additionally, NSO ameliorated tissue damage of the thyroid gland, ovary, and uterus induced by NaF. -Overall, the prophylactic group (NSO/NaF) performed better antioxidant and anti-inflammatory activities than the treated group almost in all examined tissues, which is reflected by the improvement in the structure of the thyroid, ovarian, and uterine tissues.

Direct-Acting Antiviral Drug Modulates the Mitochondrial Biogenesis in Different Tissues of Young Female Rats.

(1) Background: Hepatitis C virus (HCV) infection is endemic in Egypt, with the highest prevalence rate worldwide. Sofosbuvir (SOF) is a nucleos(t)ide analog that specifically inhibits HCV replication. This study aimed to explore the possible effects of the therapeutic dose of SOF on the mitochondrial biogenesis and functions of the liver, muscle, and ovarian tissues of young normal female rats. (2) Methods: This study was conducted on 20 female Wistar rats, classified into two groups, the control group and the exposed group; the latter was orally supplemented with 4 mg/kg/day of SOF for 3 months. (3) Results: The exposure to SOF impairs mitochondrial biogenesis via mitochondrial DNA copy number decline and suppressed mitochondrial biogenesis-regulated parameters at mRNA and protein levels. Also, SOF suppresses the DNA polymerase γ (POLG) expression, citrate synthase activity, and mitochondrial NADH dehydrogenase subunit-5 (ND5) content, which impairs mitochondrial functions. SOF increased lipid peroxidation and oxidative DNA damage markers and decreased tissue expression of nuclear factor erythroid 2-related factor 2 (Nfe2l2). (4) Conclusions: The present findings demonstrate the adverse effects of SOF on mitochondrial biogenesis and function in different tissues of young female rats, which mostly appeared in ovarian tissues.

INFLUENCE OF COMBINED EFFECT OF CONSTANT ILLUMINATION AND CHRONIC ALCOHOL INTOXICATION ON HEPATOCYTE ULTRASTRUCTURE IN MALE AND FEMALE WISTAR RATS

Light pollution causes melatonin deficiency and circadian rhythm disruption. Thus, it is associated with hepatopathy. Circadian rhythm disruption increases liver damage from alcohol and the severity of alcoholism.&#x0D; The aim of the study was to examine the combined effect of constant illumination and chronic alcohol intoxication (CAI) on hepatocyte ultrastructure in male and female rats.&#x0D; Materials and Methods. The study was carried out on 120 male and 80 female Wistar outbred rats aged 6 months. The experiment lasted 3 weeks. Differences in morphological patterns of hepatocyte ultrastructure were visually assessed. The percentage of hepatocytes containing lipid vacuoles was calculated.&#x0D; Results. Constant illumination and chronic alcohol intoxication caused allostasis. Hepatocyte edema, mitochondria swelling, karyopyknosis, fatty degeneration, and hepatocyte death were detected in the liver cells of male and female rats. The above-mentioned pathological changes were less severe in females. Moreover, collagen layers did not proliferate into the liver tissues in female rats. So, we can conclude that the combined effect of constant illumination and CAI do not lead to inflammatory changes and architectural distortion in the liver of female rats. Taking into account the morphological picture of the liver of male and female rats and a number of biochemical parameters that describe its functional state, the obtained data on gender differences in the hepatocyte ultrastructure in rats exposed to CAI and constant illumination allow us to report that hepatocyte adaptation to stress is more successful in female rats than in male ones.

Effect of Some Medicinal Plants Extracts and Chemicals on Enzymes and Tissues Liver of Female Rats

The study was carried out on 45 sexually mature female albino rats at the age of 7-8 weeks and weighing 160-180; nine treatments were used in this study, where five rats were isolated for the control treatment (without infection); the remaining rats were injected (Subcutaneous) with Indian-made Alloxan, which was prepared at the time of injection at a dose of 100 mg/kg of body weight. The results showed a significant decrease in liver enzymes AST and the ALP characteristic in T3, T4, T5, T6, T7, T8, and T9, as well as a significant decrease in the ALT characteristic in T3, T5, T6, T7, and T9. Histological effects We notice severe damage to the liver tissue of alloxan-treated rats compared to the proper treatment, represented in the liver tissue by necrosis of liver cells, the presence of a blood clot, the absence of sinusoids, and the thickening of the nuclei. The results have shown that the aqueous extracts positively affect zymes and tissues in female rats.

The Effect of Eight Weeks of Resistance Training and Testosterone Enanthate Consumption on TNF-α and IL-6 Genes’ Expression in the Kidney Tissue of Female Wistar Rats

Objectives: This study aimed to evaluate the effect of a testosterone enanthate anabolic steroid on the gene expression of inflammatory factors in the kidney tissue of female rats following eight weeks of resistance training. Methods: Twenty-one female Wistar rats weighing 200 ± 20 g, aged eight weeks, were prepared from the Iran Pasture Institute. Following a week for acclimatization, the rats were randomly divided into three groups: control (n = 7), training + placebo (n = 6), and training + testosterone enanthate (n = 8). Resistance training included five days a week of climbing a 1-meter ladder with 26 stairs while bearing weights and two days of rest. In the first week, the weights were equal to 40% of the rats’ body weight. In the following weeks, the weight was increased by 20% per week. The rats were weighed two times a week. In the testosterone group, the rats were injected with 20 mg of testosterone enanthate thrice a week. Forty-eight hours following the last training session and testosterone injection, kidney tissue samples were collected to determine the gene expression of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) using real-time PCR. Results: The results showed that testosterone consumption significantly increased the gene expression of TNF-α and IL-6 in female rats undergoing resistance training (P = 0.001). Conclusions: The findings of this study demonstrated that using testosterone increased inflammatory factors in the kidney tissue of all female Wistar rats.

Improved Bioavailablity of Curcumin by Derivatisation with Isoleucine in Plasma and Reproductive Tissues of Female Rats is Mainly Due to Altered Affinity for P-gp Transporter

Aim: The present study aimed to investigate the bioavailability of curcumin conjugated with isoleucine. Background: Curcumin has various health beneficiary properties; however, it is poorly bioavailable because of its insolubility in water, poor absorption and quick systemic elimination. Hence, any approach that could improve bioavailability is necessary. Objective: The objective of the present study is to examine whether the bioavailability and biodistribution of curcumin is improved upon derivatisation with isoleucine than that of native curcumin. Methods: About 0.1 g/kg bw of curcumin and its isoleucine-derivative were administered to fasting rats. Then the blood and tissue samples were collected at different time intervals (0, 1800, 3600, 7200, 14400, 28800, 43200, 86400, and 172800 seconds) and processed for the extraction of curcumin and its derivative with methanol. The processed samples were subjected to HPLC analysis and compared with the standard curcumin and its derivative. The results were analysed using the software, PKSolver, for determining the bioavailability and biodistribution. Further, the docking studies were carried out to better understand the results obtained. Results: We found that isoleucine-curcumin conjugates have better bioavailable in plasma, ovary and uterus in the experimental rats. The curcumin and its isoleucine-derivative was detected to be maximum at 14400 seconds. However, the concentration of isoleucine-derivative of curcumin was significantly high at Tmax compared to native curcumin. Further, curcumin and its derivative were found in the reproductive organs only at 28800 seconds, 43200 seconds and 86400 seconds. The binding energy of isoleucine-derivative of curcumin with p-glycoprotein transporter was found to be more compared to the native form. This may be the reason for the increased bioavailability of isoleucine-derivative of curcumin. Conclusion: The isoleucine-curcumin conjugate has better bioavailability compared to curcumin both in plasma and reproductive organs.

Pre and postnatal exposure to 900 MHz electromagnetic fields induce inflammation and oxidative stress, and alter renin-angiotensin system components differently in male and female offsprings

AimsThis study was designed to investigate inflammation, oxidative stress and renin-angiotensin system components in brain and kidney tissues of female and male rats prenatally and/or postnatally exposed to 900 MHz electromagnetic field (EMF). It is aimed to evaluate the biological effects of 900 MHz EMF exposure due to the increase in mobile phone use and especially the more widespread use of the GSM 900 system. Main methodsMale and female Wistar albino offsprings were divided into four groups of control, prenatal, postnatal, and prenatal+postnatal exposed to 900 MHz EMF for 1 h/day (23 days during pregnancy for prenatal period, 40 days for postnatal period). The brain and kidney tissues were collected when they reached puberty. Key findingsIt was found that the total oxidant status, IL-2, IL-6, and TNF-α levels increased (p < 0.001) and the total antioxidant status levels decreased (p < 0.001) in all three EMF groups comparing to controls in both male and female brain and kidney tissues. The renin- angiotensin system components such as angiotensinogen, renin, angiotensin type 1 and type 2 receptors, and MAS1-like G protein-coupled receptor expression were higher (p < 0.001) in all three EMF exposure groups comparing to controls in both male and female brain and kidney tissues. Although there are some differences of the levels of proinflammatory markers, ROS components and RAS components in brain and kidney tissues between males and females, the common result of all groups was increase in oxidative stress, inflammation markers and angiotensin system components with exposure to 900 MHz EMF. SignificanceIn conclusion, our study suggested that the 900 MHz EMF can activate brain and kidney renin-angiotensin system, and this activation is maybe related to inflammation and oxidative stress in both male and female offsprings.

Effect of Aerobic Training and Use of Nanomicelle Curcumin on Gene Expression of GPX, Cat, SOD and MDA Enzymes in Heart Tissue of Balb C Female Mice with Induced Breast Cancer in Treatment Phase with Doxorubicin

Introduction:Doxorubicin is a universal drug in treatment of all types of cancers, which is limited in its use due to various side effects in body tissues, so the present study investigated effect of aerobic exercise and use of curcumin nanomicelles on gene expression of the enzymes (GlutathionePeroxidase) GPX, (Catalase) Cat (Superoxidedismutase) SOD and (Malondialdehyde) MDA was investigated in the heart tissue of BalbC female rats with induced breast cancer in the treatment phase of doxorubicin.&#x0D; method: This research was practical, it was experimental in terms of control of variables and it was a laboratory in terms of place of implementation. Thirty-six BalbC mice were randomly divided into 6 groups (n=6): healthy, patient, doxorubicin patient, doxorubicin patient and aerobic exercise, doxorubicin patient and nanocurcumin supplement, and doxorubicin patient, aerobic exercise and supplementation. Breast cancer induction was done with MC4-L2 cells. Doxorubicin 2mg/kg was injected subcutaneously 6 times on days 1,7,14,21,28 and 35. Aerobic program consisted of 5 sessions per week for 42 days with an increase in the speed of the treadmill every two weeks, including 14, 16 and 18meters per minute and the use of nanocurcumin at a dose of 100mg/kg.The data collected with SPSS version16 and two-way analysis of variance and for the normality of the frequency distribution with skewness and non-parametric Kolmogorov-Smirnov test were performed with a significance level of P ≤ 0.05.&#x0D; Results: Six weeks of aerobic training had no effect on the expression of GPX, MDA and SOD genes in the target groups, but it significantly increased the expression of Catgene (P ≤ 0.05). The use of nanocurcurmin supplement for 6 weeks decreased the expression of MDA gene and significantly increased the expression of GPX, SOD and Catgenes. Six weeks of aerobic training along with nanocorcurmin supplementation significantly increased Cat gene expression (P≤0.05), but had no effect on GPX, MDA and SOD gene expression.&#x0D; Conclusion: Aerobic exercises and the use of nanocurcurmin supplement separately or at the same time can be effective in reducing the cardiac toxicity of doxorubicin in the patients with breast cancer.

Gender determinism of the effect of placenta cryoextract on the hepatotropic effects of esomeprazole, clarithromycin and metronidazole in chronic liver damage

Current regimens for the eradication of Helicobacter pylori infection include bismuth drugs, proton pump inhibitors, and a combination of 2–3 antibacterial drugs. Uncontrolled use of antibacterial agents as part of eradication schemes increases the risk of developing their unwanted drug reactions, in particular, hepatotoxicity. As a means with potentially hepatoprotective activity, our attention was drawn to placental cryoextract.&#x0D; The purpose of the study. To characterize the gender aspects of the hepatotropic action of placenta cryoextract in tetrachloromethane hepatitis with background ethanol-induced cirrhosis and liver damage by antiulcer agents.&#x0D; Materials and methods. Research was conducted on 112 male and female rats. Tetrachloromethane hepatitis with background ethanol-induced liver cirrhosis was reproduced by injecting an oil solution of CCl4 in combination with a 5.0% ethanol solution for 45 days. Modulation of the content of sex hormones was achieved by surgical ovariectomy or testectomy.&#x0D; Results and discussion. Administration of esomeprazole, clarithromycin, and metronidazole in chronic liver damage in animals without changes in hormonal status led to a statistically significant (p=0.01) 27.6% increase in the level of bilirubin in homogenates of liver tissues in female rats (78.7±4.5 mmol/l) than in males. The greatest decrease in the content of bilirubin (41.7%, p&lt;0.001) with the use of cryoextract of the placenta was noted in castrated female rats with simulated tetrachlormethone hepatitis with background ethanol-induced cirrhosis of the liver, which were injected with antiulcer agents.&#x0D; Conclusions. Administration of cryoextract of the placenta has a pronounced hepatoprotective effect in animals of both sexes. In male rats with no change in hormonal status with simulated liver injury and the administration of antiulcer drugs, placenta cryoextract therapy was more effective than in female rats, as indicated by a more than 1.6-fold decrease in the content of bilirubin in the liver homogenates of male rats (43.1%, p&lt;0.001) than in females (27.4%, p&lt;0.01).

Effect of formulation and route of administration on the distribution of 17-hydroxyprogesterone caproate in rats

Weekly intramuscular (250 mg/week) or subcutaneous (275 mg/week) injections of 17-hydroxyprogesterone caproate (17-OHPC) is the only treatment option for the prevention of preterm birth in women with a prior history of preterm delivery. The objective of the current study was to determine the relative distribution of 17-OHPC in selected tissues in adult female SD rats after IM (oily formulation or solution), IV (solution), PO (solution), or intravaginal (suppository) administration. Plasma, uterus, adipose, and liver samples were collected at various times and analysed by LC-MS-MS. The highest concentrations of 17-OHPC were observed in the adipose tissue, after IM (oily formulation), and intravaginal administration. Substantial concentrations of 17-OHPC were also observed in the uterus after IM, intravaginal and IV administration. 17-OHPC was not detected in the liver and in any of the tissues tested after PO administration. 17-OHPC levels in plasma after intravaginal suppository administration were low despite substantial concentrations in the adipose and the uterus. The distribution of 17-OHPC depends on the formulation, the route of administration, and the sampling time. Low systemic concentrations and substantial distribution in the tissues of interest after intravaginal administration warrants future studies to evaluate the potential of the daily intravaginal route of administration of 17-OHPC.

Evaluation of coronary function in female rats with severe type 1 diabetes: Effects of combined treatment with insulin and pyridoxamine.

This study aimed to evaluate the coronary function, myocardium, and epicardial adipose tissue (EAT) in female rats with severe type 1 diabetes and the effects of combined treatment with insulin and pyridoxamine (AGEs inhibitor). Female Wistar rats were divided into groups: control (CTR, n=13), type 1 diabetes (DM1, n=12), type 1 diabetes treated with insulin (DM1+INS, n=11), and type 1 diabetes treated with insulin and pyridoxamine (DM1+INS+PDX, n=14). The vascular responsiveness was performed in the septal coronary artery and the protein expressions of AGE, RAGE, GPER, NF-kB was evaluated in the left ventricle (LV), as well as the reactive oxygen species (ROS) was measured in LV and in EAT. We analyzed plasma levels of glucose, estradiol, Nε-carboxymethylisine (CML), thiobarbituric acid reactive substances (TBARS), catalase (CAT), and superoxide dismutase (SOD). The maximal responses to ACh were reduced in the DM1 compared with the CTR group, accompanied by an increase in circulating glucose, CML, and TBARS. Additionally, the expression of NF-kB in LV and generation of ROS in the presence of MnTMPyP (SOD mimetic) were increased in the DM1 group compared with CTR. Only the combined treatment was effective for fully re-establish ACh relaxation response, NF-kB protein expression, ROS generation, and increased SOD activity in the DM1+INS+PDX group. The reduction of the endothelium-dependent relaxation response in the septal coronary artery of female rats with severe type 1 diabetes was normalized with the combined treatment with insulin and pyridoxamine, associated with reduced inflammation and oxidative stress in the myocardium and increased circulating antioxidant activity.

Prophylactic efficiency of the administration of vitamin, mineral and sorbent complexes on bone tissue in female rats against the background of chronic alcohol consumption

Among the general effects of alcohol use, it has a negative effect on the bone system, so the development of prevention methods is becoming an increasingly urgent problem. The present study was aimed at evaluating the efficiency of the preventive complexes for the bone system in chronic alcohol intoxication. The study was conducted on 2-month-old female rats for 104 days. Chronic alcoholism in animals was simulated by replacing drinking water with an ethanol solution, the concentration of which was gradually increased from 8–25%. The prophylactic was administered by introducing into the diet a complex of vitamins (P, C, D) and minerals (Cu, Mg, Zn, Se, Mn), the main component of which was crushed oyster shells processed with citric acid. The second prophylactic complex was the clay mineral montmorillonite in combination with vitamins P, C, D. The biochemical markers of resorption (elastase and acid phosphatase activity), osteogenesis (calcium content, alkaline phosphatase activity) and the state of the antioxidant system (catalase, superoxide dismutase, glutathione reductase activity, malondialdehyde content) were determined in bones (jaws and femurs). Chronic alcohol consumption led to an increase in the degree of atrophy of the alveolar process, a decrease in femur bone density due to a decrease in the mineral component in bone tissue, and did not affect the state of the lumbar vertebrae. Chronic alcohol intoxication led to a decrease in the level of calcium in the blood serum of rats, and to a decrease in the alkaline phosphatase activity and the calcium content in the bone tissue of the jaws and femur against the background of increases in the activities of acid phosphatase and elastase. A significant decrease in the activity of the main antioxidant enzymes (superoxide dismutase, catalase and glutathione reductase) in bone tissue of animals against the background of an increase in the malondialdehyde content under conditions of chronic alcoholization has been established. The use of the complex with crushed oyster shells effectively prevented atrophy ofthe alveolar process in the jaws, did not affect the morphometric parameters in the femur and vertebrae, but normalized the activities of serum alkaline phosphatase and catalase, bone elastase, acid phosphatase, superoxide dismutase and glutathione reductase against the background of restoring the levels of calcium and malondialdehyde both in the serum and in the bone tissue of rats subjected to chronic alcoholization. Prophylactic administration of the vitamin complex with montmorillonite had a much weaker effect on the studied indicators. The obtained research results allow us to conclude that the osteoprotective and antioxidant efficiency of the complex with crushed oyster shells is more pronounced than that of montmorillonite under conditions of chronic alcohol intoxication.