scholarly journals Мorphofunctional Characteristics of the Male Reproductive System of White Rats Treated with Bisphenol A and Triclosan

2019 ◽  
Vol 8 (1) ◽  
pp. 77-81
Author(s):  
S. V. Chigrinets ◽  
G. V. Bryukhin ◽  
S. N. Zav'yalov
Keyword(s):  
Bisphenol A ◽  
Leydig Cells ◽  
Statistical Processing ◽  
Mature Male ◽  
Male Rats ◽  
Total Count ◽  
White Rats ◽  
Comparison Groups ◽  
Negative Effect ◽  
Sexually Mature

The aimof this study was to analyze the morphofunctional state of the testes of mature male rats treated with bisphenol A (BPA) and triclosan (TCS).Material and methods.The work was performed on mature male rats (n=28). Experimental animals were divided into three groups – control (intact) and two experimental ones. For two months, rats of the experimental groups received daily bisphenol A and triclosan (Sigma-Aldrich, USA) with food in the amount of 200 mg/kg. The total count of spermatozoa in 1 ml of sperm was determined with the calculation of their atypical forms, and morphometric measurements were made (the total number and area of Leydig cells with their nuclearcytoplasmic ratio). The concentrations of bisphenol A and testicular triclosan were measured by gas chromatography with mass spectrometry (GC-MS). The obtained data was subjected to statistical processing using IBM SPSS Statistics v.21 (IBM Corp., Armonk, NY, USA).Results.Differences between the comparison groups in the concentration of bisphenol A and triclosan in testicular tissues were statistically significant (p <0.001). The endocrine disruptors studied reduced the mass of the testes. A group of male rats exposed to bisphenol A showed a decrease in the total number of spermatozoa (p=0.004) with an increase in their atypical forms (p=0.014) compared with a group of intact animals. Bisphenol A and triclosan caused a decrease in the total number of Leydig cells (p=0.001; p=0.001) respectively, and a statistically significant change in the nuclear-cytoplasmic ratio. Moreover, bisphenol A led to a decrease in the nuclear-cytoplasmic ratio of Leydig cells, whereas triclosal, on the contrary, increased its value in comparison with a group of intact animals.Conclusion.Bisphenol A and triclosan have a negative effect on the morphofunctional state of the male testes of sexually mature rats (decrease in testicular mass, total count of spermatozoa on the background of an increase in their atypical forms, as well as a decrease in the total number of Leydig cells with a change in their nuclear-cytoplasmic ratio).

scholarly journals MORPHOFUNCTIONAL CHARACTERISTICS OF TESTES IN WHITE RATS TREATED WITH BISPHENOL A AND TRICLOSAN

2018 ◽  
Vol 26 (4) ◽  
pp. 32-34
Author(s):  
S. V. Chigrinets ◽  
G. V. Bryuhin ◽  
S. N. Zavyalov
Keyword(s):  
Bisphenol A ◽  
Wistar Rats ◽  
Reproductive Function ◽  
Testicular Tissue ◽  
Seminiferous Tubules ◽  
White Rats ◽  
Comparison Groups ◽  
Negative Effect ◽  
Male Wistar Rats ◽  
Sexually Mature

We studied the effect of unstable ubiquitous endocrine disrupters bisphenol A (BPA) and triclosan (TCS) on the reproductive function of adult male Wistar rats. BPA and TCS concentrations were measured directly in testicular tissue by gas chromatography with mass spectrometry (GC-MS). Comparison groups were found to be statistically significantly different in the concentrations of bisphenol A and triclosan in testicular tissues. The study showed that bisphenol A and triclosan have a negative effect on the morphofunctional state of the male reproductive glands of sexually mature rats, causing a decrease in testicular mass, a decrease in parenchyma, the number and diameter of the seminiferous tubules, an increase in the number of convoluted seminiferous tubules with desquamated epithelium, and a decrease in sperm cells on the background of an increase in their atypical forms.

Sperm protamine levels as indicators of fertilising potential in sexually mature male rats

Andrologia ◽  
2008 ◽  
Vol 40 (1) ◽  
pp. 29-37 ◽  
Author(s):  
M. Aleem ◽  
V. Padwal ◽  
J. Choudhari ◽  
N. Balasinor ◽  
M. K. Gill-Sharma
Keyword(s):  
Mature Male ◽  
Male Rats ◽  
Sexually Mature

scholarly journals SUBTOXIC EFFECTS OF SODIUM FLUORIDE ON THE ULTRASTRUCTURE OF PITUITARY GLAND IN RATS

2020 ◽  
Vol 20 (4) ◽  
pp. 133-135
Author(s):  
I.L. Kolisnyk
Keyword(s):  
Electron Microscopy ◽  
Pituitary Gland ◽  
Sodium Fluoride ◽  
Redox Reactions ◽  
Mature Male ◽  
Male Rats ◽  
Partial Reduction ◽  
White Rats ◽  
Subcellular Level ◽  
Fluoride Intoxication

The study aimed at investigating the morphofunctional state of the pituitary gland in white rats under the subtoxic exposure to sodium fluoride. Mature male rats (N = 17), weighing 130-150 g, were intragastrically administered with aqueous solutions of sodium fluoride in a dose of 1/10 LD50 ranged from 20 mg / kg of body weight. The duration of the subacute experiment was 60 days. To assess the morphological rearrangement at the subcellular level of organization of the pituitary gland, electron microscopy was performed. The microscopic study revealed changes in the submicroscopic architecture resulted from dystrophic processes caused by the subtoxic exposure to sodium fluoride. Prolonged sodium fluoride intoxication led to a number of changes in the ultrastructure of the pituitary gland, manifested by the development of intracellular oedema, swelling of mitochondria, changes in the density of their matrix, partial reduction and loss of cristae, vacuolization and expansion of the cisterns of the granular endoplasmic reticulum, an increase in the number of primary lysosomes, in the redistribution of chromatin nucleus and a decrease in the number of ribosomes and glycogen granules. Hemocapillaries showed oedema of endothelial cells, uneven thickening of the basement membrane, vasodilatation with the development of stasis and sludge of erythrocytes. As in the vessels of the hypothalamus, the presence of fibrin and a significant number of platelets has been found. These changes indicate a disruption of bioenergetics associated with the mitochondrial apparatus and the development of hypoxic processes, which lead to a decrease in the activity of redox reactions occurring at the level of intracellular membranes and organelles.

scholarly journals FIBRINOLYTIC ACTIVITY IN HEART TISSUE IN HYPOTHYROID AND HYPERTHYROID RATS UNDER THE INFLUENCE OF EXOGENOUS MELATONIN AND BLINDING CONDITIONS (ENUCLEATION)

10.23856/4626 ◽  
2021 ◽  
Vol 46 (3) ◽  
pp. 202-207
Author(s):  
Svitlana Anokchina ◽  
Olena Yasinska
Keyword(s):  
Fibrinolytic Activity ◽  
Experimental Studies ◽  
Statistical Processing ◽  
Scientific Work ◽  
Heart Tissue ◽  
Male Rats ◽  
Control Group ◽  
Ether Anesthesia ◽  
Exogenous Melatonin ◽  
White Rats

The aim of our scientific work was to study the effect of exogenous melatonin on the indicators of fibrinolytic processes in the heart tissues and to analyze the changes in fibrinolytic activity occurring in the heart tissues of enucleated hyper- and hypothyroid white rats. The experiments were carried out on white nonlinear male rats weighing 0.12-0.14 kg. 4 experimental groups of animals were formed. The control group consisted of 11 normothyroid rats, which were injected with a melatonin solution in appropriate volumes. The animals were euthanized under light ether anesthesia. Samples of the examined heart tissue were ground in a glass homogenizer with borate buffer (pH 9.0). The homogenate was used in biochemical analysis. Determination of the total, enzymatic and non-enzymatic fibrinolytic activity (TFA, EFA, NFA, respectively) in the heart tissues was carried out by the method of azofibrin lysis (LLC "Simko", Ukraine). Statistical processing of the results was carried out by the method of variation statistics using the Student's test. Experimental studies on nonlinear male white rats have shown that the introduction of exogenous melatonin, as well as modeling the conditions of endogenous melatonin overproduction by blinding (enucleation) cause an increase in the intensity of enzymatic and non-enzymatic fibrinolysis in heart tissue in normotyroid animals. At other hand, enucleation causes an increase in the intensity of fibrinolysis in the tissues of the heart in hypothyroid rats, but not in hyperthyroid.

scholarly journals Morphofunctional State of the Mature Rats Pituitary Gland under Readaptation Conditions to the Long Influence of Heavy Metal Salts Complex and Correction with L-Tocopherol

2021 ◽  
Vol 6 (6) ◽  
pp. 245-252
Author(s):  
N. B. Hryntsova ◽  
◽  
A. M. Romanyuk ◽  
O. O. Tymakova ◽  
D. R. Khrin
Keyword(s):  
Heavy Metal ◽  
Pituitary Gland ◽  
Mature Male ◽  
Metal Salts ◽  
Male Rats ◽  
Structural Components ◽  
Adaptive Processes ◽  
Heavy Metal Salts ◽  
Sexually Mature ◽  
Experimental Group

The purpose of the study was to study the morphofunctional rearrangements of the structural components of the adenohypophysis of sexually mature male rats under the condition of a 30-day period of readaptation to the long-term influence of salts of heavy metals (zinc, copper, iron, manganese, lead and chromium) and taking a corrector drug. Materials and methods. The experiment was carried out on 24 white sexually mature male rats, which were divided into 1 control and 1 experimental group. The experimental group consisted of rats that consumed ordinary drinking water for 30 days after 90 days of receiving water saturated with a combination of heavy metal salts: zinc (ZnSO4 7H2O) – 5 mg / l, copper (CuSO4 5H2O) mg / l, iron (FeSO4) – 10 mg / l, manganese (MnSO4 5H2O) – 0.1 mg / l, lead (Pb (NO3) 2) – 0.1 mg / l and chromium (K2Cr2O7) – 0.1 mg / l and L-tocopherol corrector. Results and discussion. With a 30-day period of readaptation to the action of a complex of salts of heavy metals, combined with the intake of a corrector drug L-tocopherol, morphological rearrangements of a nonspecific polymorphic nature developed in the structural components of the pituitary gland: compensatory hypertrophy and increased vascularization of the pituitary gland were observed, the state of rheological properties of the blood improved, the number of chromophiles increased and the number of chromophobes decreased, the processes of cyst formation disappeared, the stress from the adaptive processes in the glandulocytes of the adenohypophysis decreased, namely their secretory activity, the expression of Hsp90α receptors in the cytoplasm of adenocytes significantly increased. Negative rearrangements include an increased value of the fibrous component of the connective tissue of the intertrabecular spaces, increased collagenization of the wall of veins and capillaries, preservation of stromal edema, plethora of hemocapillaries, the presence of a small number of adenocytes with signs of vacuolization of the cytoplasm, balloon dystrophy. Conclusion. A comprehensive study of the structural components of the adenohypophysis of the test animals under the condition of a 30-day period of readaptation to long periods of consumption of heavy metal salts and correction with L-tocopherol certainly indicate a number of adaptive and regenerative morphofunctional changes aimed at reducing the stress of adaptive processes on the part of the adenohypophysis in response to cancel the action of the stress factor

scholarly journals Connection of urethral microbiota with the semen quality and the concentration of endocrine disrupters in men semen

2018 ◽  
Vol 19 (4) ◽  
pp. 60-66
Author(s):  
S. V. Chigrinets ◽  
G. V. Bryuhin
Keyword(s):  
Bisphenol A ◽  
Seminal Fluid ◽  
Semen Quality ◽  
Statistical Processing ◽  
Test System ◽  
P Value ◽  
Study Objective ◽  
Comparison Groups

The study objective is to investigate the correlations between opportunistic microorganisms of the urethra and the quality of ejaculate, as well as the concentration of ubiquitory endocrine disruptors (bisphenol A and triclosan) in men semen.Materials and methods. We analysed 63 semen samples of men with normo- and patozoospermia. In seminal fluid the concentration of bisphenol A and triclosan was determined by gas chromatography with mass spectrometry. The microbiocenosis of the urethra was studied by real-time polymerase chain reaction using the Androflor test system. The results were subjected to statistical processing using the Mann — Whitney U-test and correlation analysis. A p-value less than 0.05 was considered significant.Results. Bisphenol A was found in 100 % of the semen samples. Triclosan was detected in 84.9 % of the samples. Comparison groups on the quality of ejaculate (normo- and pathozoospermia) were statistically significantly different in the concentration of bisphenol A and triclosan in seminal fluid (p <0.001) and (p = 0.003) respectively. The study established statistically significant correlations between bisphenol A concentration, seminal triclosan and urethral microbiota: Lactobacillus spp. (r = 0.501, p = 0.003), Corynebacterium spp. (r = 0.425, p = 0.015), Anaerococcus spp. (r = 0.371, p = 0.045), Eubacterium spp. (r = 0.357, p = 0.037) for bisphenol A and Staphylococrns spp. (r = 0.392, p = 0.026), Streptococcus spp. (r = —0.486, p = 0.005) for triclosan.Conclusion. In this study the connection of the urethral microbiota with the quality of the ejaculate and the concentration of endocrine dis-ruptors (bisphenol A and triclosan) in men semen was established. In this regard, it is necessary to take into account the role of asymptomatic urethral dysbiosis when administering patients with poor ejaculate quality.

scholarly journals Increasing mechanical load to 2G in a 1G environment has a negative effect on bone quality of mature male rats

2006 ◽  
Vol 20 (5) ◽  
Author(s):  
Jenny Lessley ◽  
Barbara J. Stoecker ◽  
Ruth K. Globus ◽  
Lisa Baer ◽  
Joseph Tash
Keyword(s):  
Bone Quality ◽  
Mechanical Load ◽  
Mature Male ◽  
Male Rats ◽  
Negative Effect

scholarly journals COMPARATIVE CHARACTERISTICS OF THE MORPHOLOGICAL CHANGES OF NEPHRON TUBULES AT THE EARLY AND LATE STAGES OF THE CHRONIC OPIOID EFFECT

2019 ◽  
pp. 19-22
Author(s):  
Lesya Mateshuk-Vatseba ◽  
Iryna Vilkhova ◽  
Anna Bekesevych ◽  
Yeugen Paltov ◽  
Elena Kantser
Keyword(s):  
Morphological Changes ◽  
Mature Male ◽  
Male Rats ◽  
Histological Investigation ◽  
Early Stages ◽  
Hematoxylin And Eosin ◽  
Convoluted Tubules ◽  
Late Stages ◽  
Sexually Mature ◽  
Proximal Convoluted Tubules

The aim of the study is the examination of the nephron tubules morphological changes at the early and late stages of the experimental chronic opioid effect. Varying degrees of the morphological changes of proximal convoluted tubules, loops of Henle and distal convoluted tubules under chronic nalbuphine effect in the dynamics have been detected. The materials of the study – kidneys of 56 sexually mature male-rats. The experimental animals received daily intramuscular nalbuphine injections for 98 days. From the first to the fourteenth day of the experiment the dose of nalbuphine was 0,212 mg/kg. Every next two weeks nalbuphine injections were done in increasing doses. For histological investigation was used commonly agreed method. The colouring was performed using hematoxylin and eosin as well as azan by Heidenhain's method. Varying degrees of morphological changes of proximal convoluted tubules, loops of Henle and distal convoluted tubules under continuous nalbuphine injection in the dynamics have been detected. The most vivid alterative changes can be observed in proximal convoluted tubules both: at the early and late stages of the experiment. At the early stages as of the 14th day of the experiment signs of granular dystrophy appear, as of the 28th day – necrotic changes, progressing further at the late stages of the experiment. The loops of Henle undergo sporadic destructive changes at the early stages and at the beginning of the late stage of the experiment. Distal convoluted tubules have been necrotic altered only at the late stages of the experiment.

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