EFFECT OF BILATERAL CRYPTORCHIDISM UPON PITUITARY AND SERUM LEVELS OF LH AND FSH IN SEXUALLY MATURING MALE RATS

he present work was designed to investigate the reproductive toxicity induced by oral administration of chlorpyrifos (CPF), cypermethrin (CYP) and their combination in adult male albino rats. Forty mature male albino rats were separated into four groups (10 each), the first group was used as control, while second, third and fourth groups received orally 1/20 LD50 of CPF (10 mg/kg b.wt), 1/20 LD50 of CYP (17.22 mg/kg b.wt) and 1/40 LD50 of CPF plus 1/40 LD50 of CYP (5 mg/kg b.wt CPF plus 8.61 mg/kg b.wt CYP) respectively for 26 days. The results revealed that exposure to CPF and/or CYP induced a significant decrease in the reproductive organs weight. Moreover, a significant decrease in spermatic picture (sperm cell concentration and viability) was observed with high percent of sperm abnormalities. Serum levels of testosterone and pituitary gonadotropins (FSH and LH) have been declined significantly in all treated groups. Significant elevations were observed in malondialdehyde and nitric oxide concentrations, while antioxidant enzymes superoxide dismutase and glutathione-S-transferase activities were decreased significantly as a result of induced oxidative stress. A significant drop in prostatic acid phosphatase activity was observed. Additionally, the results showed some histopathological alterations in the reproductive organs as well as neurological lesions in brain and pituitary glands. In conclusion, CPF and CYP induce deleterious effects on reproductive efficiency of male rats which reflect more obvious impacts when both combined

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HYPOTHALAMIC-PITUITARY-TESTICULAR SYSTEM AND ADRENOCORTICAL FUNCTION

Acta Endocrinologica ◽

10.1530/acta.0.0810198 ◽

1976 ◽

Vol 81 (1) ◽

pp. 198-207 ◽

Cited By ~ 4

Author(s):

H. L. Verjans ◽

K. B. Eik-Nes

Keyword(s):

Adrenal Gland ◽

Blood Serum ◽

Adult Male ◽

Serum Levels ◽

Male Rats ◽

Intramuscular Administration ◽

Adrenocortical Function ◽

Male Rat ◽

Pituitary Secretion ◽

Slight Elevation

ABSTRACT Effect of intramuscular administration of ACTH or dexamethasone on blood serum levels of testosterone, LH and FSH was examined in intact and castrated, adult, male rats. Six IU ACTH or 1 mg dexamethasone were given daily for 7 days. Corticotrophin treatment had no influence on circulating testosterone, LH and FSH in intact or castrated male rats. Dexamethasone administration resulted in a slight elevation of serum FSH in intact animals but not in castrates. LH and testosterone remained normal in both intact and castrated animals injected with dexamethasone. Under our conditions of study the secretions from the adrenal gland appear to be insignificant for the regulation of pituitary secretion of gonadotrophins in the male rat.

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The effects of supraphysiological supplementation of b-carotene in spontaneously hypertensive rats (SHR and SHR-sp)

Revista do Colégio Brasileiro de Cirurgiões ◽

10.1590/0100-69912014005010 ◽

2014 ◽

Vol 41 (5) ◽

pp. 351-355 ◽

Cited By ~ 1

Author(s):

Stênio Karlos Alvim Fiorelli ◽

Lúcia Marques Vianna ◽

Carlos Alberto Basílio de Oliveira ◽

Rossano Kepler Alvim Fiorelli ◽

Bernardo Cunha Senra Barros ◽

...

Keyword(s):

Blood Pressure ◽

Spontaneously Hypertensive Rats ◽

Carotid Arteries ◽

Morphological Changes ◽

Serum Levels ◽

Muscle Layer ◽

Male Rats ◽

Elastic Fibers ◽

Hypertensive Rats ◽

Spontaneously Hypertensive

Objective: to investigate the effect of administration of supraphysiological âcaroteno on biological parameters (ectoscopy and blood pressure), laboratory (malondialdehyde) and histological (liver and carotid arteries) of spontaneously hypertensive rats prone to stroke (SHR-sp).Methods: we used 36 male rats were divided into three groups, each containing 12 rats Wistar, SHR and SHR-sp, subdivided into six control animals and six animals treated with supraphysiological doses of âcaroteno for two periods of ten weeks interspersed with one week interruption. In the experiment were assessed daily physical examination and blood pressure (plethysmography). At sacrifice, blood was collected for measurement of serum malondialdehyde, liver and carotid arteries for histological examination.Results: temporary change in color of the fur, decreased significantly (p<0.0001) blood pressure (20mg supplementation âcaroteno) and serum levels of malondialdehyde (p<0.05) and increased amount of elastic fibers in the carotid wall of SHR and SHR-sp.Conclusion: supplementation of supraphysiological âcaroteno caused no toxic effects, showed positive response in the modulation of blood pressure and lower serum malondialdehyde. No significant morphological changes were found in both groups, except an increase in the number of elastic fibers in the muscle layer carotid suggesting elastosis in SHR and SHR-sp.

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Investigation Into Effect Of Crude Mixture Of Abrus Precatorius Seed On Hypothalamopituitary Gonadal Axis And Development Of Antifertility In Male Rats

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v36i1.9234 ◽

1970 ◽

Vol 36 (1) ◽

pp. 103-109 ◽

Cited By ~ 1

Author(s):

S Talukder ◽

MA Hossain ◽

S Sarker ◽

MAH Khan

Keyword(s):

Negative Impact ◽

Sperm Count ◽

Sharp Decrease ◽

Serum Levels ◽

Serum Biochemistry ◽

Male Rats ◽

Male Rat ◽

Control Group ◽

Abrus Precatorius ◽

Crude Mixture

To evaluate the antifertility effect of crude mixture of A. precatorius seeds at the dose level of 50 mg/kg body weight in adult male rats, after oral administration to male rats for 40 days, the rats were sacrificed and hormonal profiles, serum biochemistry, sperm count and histological changes were recorded. A sharp decrease in the serum levels of testosterone (0.70 ± 0.17 ng/ml), FSH (0.70 ± 0.22 lU/L), and LH (0.87 ± 0.35 IU/L) was detected compared to control (FSH, LH and testosterone levels 0.93 ± 0.15 ng/ml, 0.76 ± 0.28 IU/L, 1.44 ± .011 IU/L, respectively). A significant reduction of epididymal sperm count (2.34 million/mL) was noted in treated rats as compared to control group (7.87 million/mL). Histology of testes showed marked atrophy of the testes, which was characterized by disruption of the seminiferous epithelium and atrophy of the Leydig cells. Crude mixture of A. precatorius seed has a negative impact on male reproductive functions. It might be suggested that crude mixture of A. precatorius seeds might have antifertility property for male rats. Keywords: Abrus precatorius; antifertility; male rat; testosterone. DOI: http://dx.doi.org/10.3329/bjar.v36i1.9234 BJAR 2011; 36(1): 103-109

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AMELIORATIVE EFFECTS OF GRAPE SEED OIL ON CHROMIUM-INDUCED NEPHROTOXICITY AND OXIDATIVESTRESS IN RATS

Slovenian Veterinary Research ◽

10.26873/svr-967-2020 ◽

2020 ◽

Vol 57 (3) ◽

Author(s):

Sahar Hassan Orabi ◽

Sherif Mohamed Shawky

Keyword(s):

Dna Damage ◽

Hexavalent Chromium ◽

Seed Oil ◽

Potassium Dichromate ◽

Serum Levels ◽

Grape Seed ◽

Renal Tissue ◽

Male Rats ◽

Group I ◽

Grape Seed Oil

The current study focused on investigating the renoprotective effects of grape seed oil (GSO) against hexavalent chromium (Cr (VI))-induced nephrotoxicity. A total of 40 male rats were randomly divided into four groups: group I served as the control group, group II received 1000 mg/L potassium dichromate (353.5 mg/L Cr(VI)) in drinking water for 12 weeks, group III received 3.7 g/kg body weight/day GSO orally for 12 weeks, and group IV received GSO together with potassium dichromate for 12 weeks. Cr(VI) significantly increased serum levels of urea, creatinine, potassium and glucose. In addition, Cr(VI) increased MDA levels and induced renal tissue damage and DNA damage. On the other hand, Cr(VI) decreased serum levels of sodium and antioxidant defence system [reduced glutathione (GSH) and catalase (CAT)]. However, treatment with GSO prevented elevation levels of serum urea, creatinine, potassium and glucose. In addition, GSO enhanced sodium level, renal tissue antioxidant defense system due to its curative effect ameliorated particularly oxidative stress, renal tissue and DNA damage. In conclusion, these results demonstrate that GSO is a promising nephroprotective agent against Cr(VI)-induced nephrotoxicity.Key words: grape seed oil; hexavalent chromium; nephrotoxicity; DNA damage BLAŽILNI UČINKI OLJA GROZDNIH PEŠK PRI TOKSIČNI OBREMENITVI LEDVIC TER VPLIV NA OKSIDATIVNI STRES PODGAN, POVZROČEN S KROMOM Povzetek: Študija je bila osredotočena na proučevanje zaščitnih učinkov olja grozdnih pešk (GSO) pri toksični obremenitvi ledvic, povzročeni s heksavalentnim kromom (Cr (VI)). Štirideset samcev podgan je bilo naključno razdeljenih v štiri skupine: skupina I - kontrolna skupina, skupina II, ki je v pitni vodi 12 tednov prejemala 1000 mg/L kalijevega dikromata (353,5 mg/L Cr (VI)), skupina III, ki je peroralno 12 tednov prejemala 3,7 g/kg telesne mase/dan GSO ter skupina IV, ki je 12 tednov prejemala GSO skupaj s kalijevim dikromatom. Cr(VI) je znatno zvišal serumske ravni sečnine, kreatinina, kalija in glukoze v serumu. Poleg tega je Cr(VI) zvišal raven MDA in povzročil poškodbe ledvičnega tkiva in poškodbe DNK. Po drugi strani je Cr(VI) znižal serumsko raven natrija in antioksidativnega obrambnega sistema, zmanjšal raven glutationske peroksidaze in katalaze. Dodajanje GSO poskusnim živalim je preprečilo zvišanje ravni sečnine v serumu, kreatinina, kalija, natrija in glukoze. Poleg tega je GSO izboljšal obrambni sistem antioksidantov ledvičnega tkiva. Zaradi svojega zdravilnega učinka je izboljšal zlasti oksidativni stres, poškodbe ledvičnega tkiva in DNK. Rezultati kažejo, da je GSO obetavno zaščitno sredstvo za ledvica pri toksični obremenitvi, povzročeni s Cr(VI).Ključne besede: olje grozdnih pešk; heksavalentni krom; nefrotoksičnost; poškodba DNK

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Hydration with Mannitol and Dextrose May Promote Cisplatin-Induced Nephrotoxicity: Test of Five Protocols of Hydration during Cisplatin Therapy in Rat Models

Journal of Toxicology ◽

10.1155/2021/5547341 ◽

2021 ◽

Vol 2021 ◽

pp. 1-9

Author(s):

Mohammad-Sedigh Khosravi ◽

Alireza Samimiat ◽

Bahar Mazaheri ◽

Farzaneh Ashrafi ◽

Ardeshir Talebi ◽

...

Keyword(s):

Tumor Therapy ◽

Kidney Tissue ◽

Serum Levels ◽

Female Rats ◽

Male Rats ◽

Male And Female ◽

Male And Female Rats ◽

Female Wistar Rats ◽

Solid Tumor Therapy ◽

Cisplatin Therapy

Backgrounds. Cisplatin (CP) still is a novel choice for solid tumor therapy, but it is accompanied with the side effect of nephrotoxicity. Hydration may reduce the risk of CP-induced nephrotoxicity, while the issue is still challenging. In this study, five types of hydration protocols including saline, mannitol, dextrose saline, saline plus furosemide, and saline plus mannitol were examined in both sexes of rats during CP therapy. Methods. Seventy-six male and female Wistar rats in 14 groups of experiments were subjected to CP therapy, and five types of hydration protocols were implemented, and the induced nephrotoxicity was evaluated via biochemical markers, kidney function parameters, and pathology investigation. Results. Male and female rats had different responses to hydration protocol types. The higher mortality rate was seen in female rats that received mannitol or dextrose hydration types. In addition, the serum levels of blood urea nitrogen (BUN) and creatinine (Cr) and sodium excretion fraction (ENa%) increased and the clearance of Cr (ClCr) decreased significantly ( P < 0.05 ) in female rats hydrated with saline plus furosemide or mannitol plus saline-treated groups. The worsened condition in male rats is observed in the mannitol hydration group with a significant decrease of ClCr and significant increase of serum BUN and Cr and ENa% ( P < 0.05 ). The higher kidney tissue damage score (KTDS) in the mentioned groups verified the findings. Conclusion. Hydration with mannitol or dextrose promotes the risk of nephrotoxicity during CP therapy with more intensity on the female.

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Effect of trans-chalcone on hepatic IL-8 through the regulation of miR-451 in male rats

Endocrine Regulations ◽

10.2478/enr-2018-0001 ◽

2018 ◽

Vol 52 (1) ◽

pp. 1-5 ◽

Cited By ~ 3

Author(s):

Elham Karimi-Sales ◽

Sajad Jeddi ◽

Arshad Ghaffari-Nasab ◽

Mina Salimi ◽

Mohammad Reza Alipour

Keyword(s):

Serum Level ◽

Proinflammatory Cytokines ◽

Serum Levels ◽

Male Rats ◽

Positive Effects ◽

Qrt Pcr ◽

Group Control ◽

First Time ◽

Hepatic Level

Abstract Objective. Trans-chalcone is a chalcone with hepatoprotective and anti-inflammatory effects. However, the mechanism of these positive effects, especially on miR-451 as an inflammatory regulator, is poorly understood. In this regard, this microRNA (miRNA) acts by inhibition of hepatic interleukin-8 (IL-8) production in the liver which is one of the main proinflammatory cytokines. Th is study for the first time examined the effect of trans-chalcone on miR-451/IL-8 pathway. Methods. In present study, 21 male rats were randomly divided into 3 groups (n=7 per each group): control which received solvent (NS), groups 2 (N2T) and 3 (N6T), which received transchalcone for 2 and 6 weeks, respectively. Hepatic level of miR-451 was measured by qRT-PCR. Serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) as well as hepatic level of IL-8 protein were measured. Results. Trans-chalcone decreased hepatic level of IL-8 protein and serum level of ALT aft er 2 weeks of treatment without significant change in hepatic miR-451. Moreover, it increased hepatic level of miR-451 and reduced hepatic IL-8 as well as AST and ALT aft er 6 weeks. Conclusion. Based on the results of present study, miR-451/IL-8 pathway is a possible mechanism for hepatoprotective action of trans-chalcone in long-term.

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Construction of Hyperuricemia Model Rats with Yeast Extract Combined with Oteracil Potassium

10.21203/rs.3.rs-55451/v1 ◽

2020 ◽

Author(s):

Dilidaer Xilifu ◽

Alimu Kateer ◽

Nijiati Rehemu ◽

Zhao-yong Li ◽

jie Jiang ◽

...

Keyword(s):

Uric Acid ◽

Serum Uric Acid ◽

Yeast Extract ◽

Intraperitoneal Injection ◽

Rat Kidney ◽

Optimal Dose ◽

Serum Levels ◽

Male Rats ◽

Control Group ◽

Optimal Dosage

Abstract Background: Hyperuricemia is the most important risk factor for gout, hypertension, coronary artery disease and other cardiovascular diseases. The incidence of hyperuricemia gradually increased in recent years and it is very necessary to explore the medications of the prevention and treatment of hyperuricemia using hyperuricemia animal models. Objective: The objective of present study is to explore the optimal dose of yeast extract and oteracil potassium in the establishment of hyperuricemia rat model. Method: Sixty-four male rats were randomly divided into 8 experimental groups. Rats were treated with yeast extract by intraperitoneal injection or yeast extract by intraperitoneal injection combined with various doses of oteracil potassium by intragastric feeding or intraperitoneal injection for 28 days. The serum uric acid, urea nitrogen and creatinine levels of different groups were measured at 0th day, 7th day, 14th day, 21th day and 28th day. Results: The serum levels of uric acid in the groups of intraperitoneal injection with yeast extract alone, yeast extract by intraperitoneal injection combined with 50-200 mg/kg oteracil potassium by intragastric feeding and yeast extract by intraperitoneal injection combined with 50-100 mg/kg oteracil potassium by intraperitoneal injection were higher than that in the control group. But we found no significant effect on rat kidney, heart or artery in the above groups. In the group of yeast extract by intraperitoneal injection combined with 200 mg/kg oteracil potassium by intraperitoneal injection, we observed the significantly high level of serum uric acid and morphological and pathological changes in rat kidney, heart and artery. Conclusion: In the present study, we found that continuously treated with yeast extract combined with oteracil potassium is an effective method to establish rat hyperuricemia model. Intraperitoneal injection of yeast extract combined with 200 mg/kg oteracil potassium is an optimal dosage for the construction of a persistent and stable hyperuricemia animal model.

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Correlation between Serum and Tissue Levels of Adipokines in Obesity in Adult Male Rats with and without Antioxidant

QJM ◽

10.1093/qjmed/hcaa065.011 ◽

2020 ◽

Vol 113 (Supplement_1) ◽

Author(s):

M M Elshawwa

Keyword(s):

Insulin Resistance ◽

Adult Male ◽

Fasting Glucose ◽

Density Lipoprotein ◽

Serum Levels ◽

Lipoprotein Cholesterol ◽

Male Rats ◽

Control Group ◽

Tissue Levels ◽

Group I

Abstract Background Obesity is associated with insulin resistance, type2 diabetes, dyslipidemia and cardiovascular diseases. Apelin and chemerin are identified as adipokines and adipose tissue markers. Several adipose-derived peptides are known to influence food intake, including apelin, whose expression is regulated by insulin and chemerin. Oxidative stress thought to be involved in the development of complications associated with obesity. Objective To study the nature of correlation between serum and liver levels of apelin, chemerin and oxidative parameters in obese rats with and without antioxidant. Aiming to clarify the pathophysiology of obesity. Material and Methods Thirty adult male albino rats, divided into three equal groups. Group I (control), group II (obese) and group III (obese and Lepidium sativum (LS) as an antioxidants). At the end of the experiment, blood samples were collected for estimation of the serum levels of chemerin, apelin, fasting glucose, insulin, insulin resistance (IR), lipid profile, reduced glutathione (GSH) and malondialdehyde (MDA). In addition to tissue homogenous extracts of liver were taken for the levels of MDA, CAT, chemerin and apelin. Results After eight weeks, high fat diet group showed a significant increase in serum levels of apelin, chemerin, fasting glucose, insulin, IR, total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C) & MDA and a significant decrease in high-density lipoprotein cholesterol (HDL-C) & GSH. HFD also caused a significant increase in tissue levels of MDA, CAT & chemerin and a significant decrease in apelin, compared to control group. While addition of LS to HFD caused a significant decrease in serum levels of apelin, chemerin, fasting glucose, insulin, IR, TC, TG, LDL-C & MDA and a significant increase in HDL-C & GSH. LS also caused a significant decrease in tissue levels of MDA, chemerin & insignificant decrease in CAT and a significant increase in apelin, compared to HFD group. Conclusion This study showed a significant positive correlation between liver & serum chemerin and between liver and serum MDA. On the other hand, it showed a significant negative correlation between liver and serum apelin and liver CAT and serum GSH

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