scholarly journals Effects of Endurance and Resistance Training on Calcitonin Gene-Related Peptide and Acetylcholine Receptor at Slow and Fast Twitch Skeletal Muscles and Sciatic Nerve in Male Wistar Rats

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Abdolhossein Parnow ◽  
Reza Gharakhanlou ◽  
Zeinab Gorginkaraji ◽  
Somayeh Rajabi ◽  
Rasoul Eslami ◽  
...  
Keyword(s):  
Resistance Training ◽  
Sciatic Nerve ◽  
Wire Mesh ◽  
Male Rats ◽  
Calcitonin Gene ◽  
Significant Difference ◽  
Male Wistar Rats ◽  
The Right ◽  
Fast Twitch ◽  
Training Protocol

The aim of this study was to investigate effects of endurance and resistance training (ET and RT) on CGRP and AChRs at slow and fast twitch muscles and sciatic nerve in rats. Twenty-five male rats were randomly assigned into three groups including sedentary (SED), endurance training (ET), and resistance training (RT). Animals of ET exercised for 12 weeks, five times/week, and 60 min/day at 30 m/min. Animals of RT were housed in metal cage with 2 m high wire-mesh tower, with water bottles set at the top. 48 h after the last session of training protocol, animals were anaesthetized. The right sciatic nerves were removed; then, Soleus (SOL) and Tibialis anterior (TA) muscles were excised and immediately snap frozen in liquid nitrogen. All frozen tissues were stored at −80°C. Results showed that, after both ET and RT, CGRP content as well as AChR content of SOL and TA muscles significantly increased. But there was no significant difference among groups at sciatic nerve’ CGRP content. In conclusion, data demonstrate that ET and RT lead to changes of CGRP and AChR content of ST and FT muscles. The changes indicate to the importance of neuromuscular activity.

scholarly journals Histopathological analysis of gangliosides use in peripheral nerve regeneration after axonotmesis in rats

2008 ◽  
Vol 23 (4) ◽  
pp. 364-371 ◽  
Author(s):  
Camila Maria Beder Ribeiro ◽  
Belmiro Cavalcanti do Egito Vasconcelos ◽  
Joaquim Celestino da Silva Neto ◽  
Valdemiro Amaro da Silva Júnior ◽  
Nancy Gurgel Figueiredo
Keyword(s):  
Sciatic Nerve ◽  
Peripheral Nerve ◽  
Nerve Regeneration ◽  
Schwann Cells ◽  
Peripheral Nerve Regeneration ◽  
Cell Activity ◽  
Control Group ◽  
Histopathological Analysis ◽  
Male Wistar Rats ◽  
The Right

PURPOSE: To analyze the action of gangliosides in peripheral nerve regeneration in the sciatic nerve of the rat. METHODS: The sample was composed of 96 male Wistar rats. The animals were anaesthetized and, after identification of the anaesthesic plane, an incision was made in the posterior region of the thigh, followed by skin and muscle divulsion. The right sciatic nerve was isolated and compressed for 2 minutes. Continuous suture of the skin was performed. The animals were randomly divided into two groups: the experimental group (EG), which received subcutaneous injection of gangliosides, and the control group (CG), which received saline solution (0.9%) to mimic the effects of drug administration. RESULTS: No differences were observed between the experimental and control groups evaluated on the eighth day of observation. At 15 and 30 days the EG showed an decrease in Schwann cell activity and an apparent improvement in fibre organization; at 60 days, there was a slight presence of Schwann cells in the endoneural space and the fibres were organized, indicating nerve regeneration. At 15 and 30 days, the level of cell reaction in the CG had diminished, but there were many cells with cytoplasm in activity and in mitosis; at 60 days, hyperplastic Schwann cells and mitotic activity were again observed, as well as nerve regeneration, but to a lesser extent than in the EG. CONCLUSION: The administration of exogenous gangliosides seems to improve nerve regeneration.

scholarly journals Analysis of the muscle tissue of Wistar rats submitted to the sciatic nerve compression model and cryotherapy

2018 ◽  
Vol 16 (3) ◽  
Author(s):  
Jhenifer Karvat ◽  
Camila Mayumi Martin Kakihata ◽  
Lizyana Vieira ◽  
José Luis da Conceição Silva ◽  
Lucinéia de Fátima Chasko Ribeiro ◽  
...  
Keyword(s):  
Sciatic Nerve ◽  
Muscle Tissue ◽  
Wistar Rats ◽  
Nerve Compression ◽  
Control Group ◽  
Functional Evaluation ◽  
Cross Sectional ◽  
Injury Group ◽  
Significant Difference ◽  
The Right

ABSTRACT Objective: To evaluate the effects of right sciatic nerve compression and cryotherapy on muscle tissue. Methods: We used 42 male Wistar rats, subdivided in the following Groups Control, Injury 3, Injury 8 and Injury 15 submitted to nerve compression and euthanized in the 3rd, 8th and 15th day after surgery. The Cryotherapy Injury 3 was entailed treatment with cryotherapy by immersion of the animal in recipient for 20 minutes during 1 day, then animals were euthanized at the 3rd day after surgery, and the Cryotherapy Injury 8 and the Cryotherapy Injury 15 was treated for 6 days, and euthanized at the 8th and 15th day after surgery. Functional evaluation was performed by the grasping strength of the right pelvic limb. The right tibialis anterior muscles were evaluated for mass, smaller diameter and cross-sectional area. In the Cryotherapy Injury 8 and the Cryotherapy Injury 15 groups, the hydroxyproline was dosed in the right soles. Results: In the compression there was a significant difference in the Injury Groups compared with the Control Group (p<0.05). In the smaller diameter, the compression in Control Group was higher than Injury 8 (p=0.0094), Injury 15 (p=0.002) and Cryotherapy Injury 15 (p<0.001) groups. The comparison between groups with euthanasia in the same post-operative period, a significant difference (p=0.0363) was seen in day 8th after surgery, and this result in Cryotherapy Injury Group was greater than Injury Group. In the fiber area, Control Group was also higher than the Injury 8 (p=0.0018), the Injury 15 (p<0.001) and the Cryotherapy Injury 15 (p<0.001). In hydroxyproline, no significant difference was seen between groups. Conclusion: Nerve damage resulted in decreased muscle strength and trophism, the cryotherapy delayed hypotrophy, but this effect did not persist after cessation of treatment.

scholarly journals Reproductive toxicity of manganese dioxide in forms of micro- and nanoparticles in male rats

2019 ◽  
Author(s):  
Narges Yousefalizadegan ◽  
Zahra Mousavi ◽  
Tayebeh Rastegar ◽  
Yasaman Razavi ◽  
Parvaneh Najafizadeh
Keyword(s):  
Manganese Dioxide ◽  
Reproductive Toxicity ◽  
Male Rats ◽  
Vehicle Group ◽  
Left Testicle ◽  
Mno2 Nanoparticles ◽  
Significant Difference ◽  
Male Wistar Rats ◽  
Chronic Injection ◽  
Stimulating Factor

Background: Manganese Dioxide (MnO2) has long been used in industry, and its application has recently been increasing in the form of nanoparticle. Objective: The present study was an attempt to assess the effects of MnO2 nanoparticles on spermatogenesis in male rats. Materials and Methods: Micro- and nanoparticles of MnO2 were injected (100 mg/kg) subcutaneously to male Wistar rats (150 ± 20 gr) once a week for a period of 4 weeks, and the vehicle group received only normal saline (each group included 8 rats). The effect of these particles on the bodyweight, number of sperms, spermatogonia, spermatocytes, diameter of seminiferous tubes, testosterone, estrogen, follicle stimulating factor, and the motility of sperms were evaluated and then compared among the control and vehicle groups as the criteria for spermatogenesis. Results: The results showed that a chronic injection of MnO2 nanoparticles caused a significant decrease in the number of sperms, spermatogonia, spermatocytes, diameter of seminiferous tubes (p < 0.001) and in the motility of sperms. However, no significant difference was observed in the weight of prostate, epididymis, left testicle, estradiol (p = 0.8) and testosterone hormone (p = 0.2). Conclusion: It seems that the high oxidative power of both particles was the main reason for the disturbances in the function of the testis. It is also concluded that these particles may have a potential reproductive toxicity in adult male rats. Further studies are thus needed to determine its mechanism of action upon spermatogenesis.

Capsaicin-sensitive adrenal sensory fibers participate in compensatory adrenal growth in rats

2002 ◽  
Vol 283 (4) ◽  
pp. R877-R884 ◽  
Author(s):  
Yvonne M. Ulrich-Lai ◽  
Daniel J. Marek ◽  
William C. Engeland
Keyword(s):  
Splanchnic Nerve ◽  
Male Rats ◽  
Dorsal Spinal Cord ◽  
Afferent Limb ◽  
Afferent Nerves ◽  
Sham Surgery ◽  
Calcitonin Gene ◽  
The Right ◽  
Sensory Fibers ◽  
Dorsal Spinal

Compensatory adrenal growth, in which one gland undergoes hyperplasia after removal of the other, is mediated by a neural reflex. In the present studies, a method employing capsaicin to selectively remove adrenal sensory fibers was developed and applied to determine whether adrenal capsaicin-sensitive fibers participate in compensatory adrenal growth. The splanchnic nerves of anesthetized male rats were treated with capsaicin or vehicle. Capsaicin treatment selectively removed adrenal calcitonin gene-related peptide-positive fibers. One week after drug treatment, rats underwent left adrenalectomy or sham surgery and recovered for 5 days. Capsaicin treatment bilaterally or to the left splanchnic nerve alone (i.e., the afferent nerve in the reflex) impaired compensatory adrenal growth at 5 days compared with vehicle controls, whereas capsaicin treatment to the right splanchnic nerve alone did not affect growth. Moreover, left adrenalectomy induced c-Fos immunolabeling in ipsilateral dorsal spinal cord that was prevented by capsaicin treatment. These data suggest that adrenal capsaicin-sensitive afferent nerves participate in compensatory adrenal growth and that this effect is primarily on the afferent limb of the reflex.

scholarly journals Effect of Nandrolone Treatment with And Without Resistance Training on Superoxide Dismutase Concentration and Pathology of Kidney Tissue in Rats

2020 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Esfandiyar Heidari ◽  
Seyed Ali Hosseini ◽  
Mohammad Ali Azarbayjani
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Resistance Training ◽  
Anabolic Steroids ◽  
Kidney Tissue ◽  
Sod Activity ◽  
Significant Difference ◽  
Stress Levels ◽  
Sh Group ◽  
Male Wistar Rats

Background: The prevalence of anabolic steroids abuse in athletes and non-athletes is associated with the risk of injury to various organs, but there are limited studies of oxidative changes in kidney tissue following nandrolone (N) administration. Objectives: the aim of this study was to investigate the effect of N treatment with and without resistance training (RT) on superoxide dismutase (SOD) concentration and tissue pathology of kidney tissue in rats. Methods: In this experimental study, 20 male Wistar rats were randomly divided into four groups of five rats including 1) control (C), 2) sham (normal saline) (Sh), 3) N, and 4) N + RT. Groups 3 and 4 received 10 mg/kg N peritoneally, and the N + RT group performed 1 m ladder climbing for eight weeks and three sessions per week. SOD levels of kidney tissue were measured by ELISA and radioimmunoassay. Hematoxylin-eosin (H&E) staining was used to evaluate oxidative stress levels in kidney tissue. One-way ANOVA with Bonferroni’s post- hoc tests were used for analysis of research findings in SPSS version 22 (P ≤ 0.05). Results: SOD levels in the C group were higher than the Sh (P = 0.001), N (P = 0.001), and N + RT (P = 0.001) groups. SOD levels were lower in the Sh group than in the N (P = 0.049) and N + RT (P = 0.001) groups. However, there was no significant difference in SOD levels in the N + RT group and N group (P = 0.28). Also, oxidative stress levels were normal in tissue studies in all groups. Conclusions: It seems that Ntreatment with and without RT reduces SOD activity in kidney tissue, but more studies are needed in this regard given the normality of tissue oxidative stress results.

scholarly journals The Resistance Training Reverses Insulin Resistance in Rats with Periodontitis

2021 ◽  
Vol 25 (273) ◽  
pp. 97-113
Author(s):  
Max Sander de Oliveira da Mota ◽  
Maria Sara de Lima Coutinho Mattera ◽  
Thaís Verônica Saori Tsosura ◽  
Fernando Yamamoto Chiba ◽  
Renato Felipe Pereira ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Insulin Sensitivity ◽  
Resistance Training ◽  
Periodontal Disease ◽  
Control Group ◽  
Disease Group ◽  
Western Blot Method ◽  
Tnf Α ◽  
Significant Difference ◽  
Male Wistar Rats

The present study, aimed to evaluate the effects of resistance training (RT) on glycemia, insulinemia, insulin sensitivity, insulin signaling (IS), and tumor necrosis factor-α (TNF-α) levels in rats with periodontitis. 40 male Wistar rats were distributed into 4 groups: sedentary control group (SCN), exercised control group (ExCN), sedentary ligature-induced periodontal disease group (SPD), and exercised ligature-induced periodontal disease group (ExPD). 28 days after inducing periodontitis the RT started (14-week). Glycemia, insulin, TNF-α levels, and insulin sensitivity were analyzed using various methods. IS was evaluated by measuring tyrosine phosphorylated pp185 in insulin-sensitive tissues (western blot method). Higher levels of insulin, HOMA-IR, and TNF-α, and a decrease in insulin sensitivity were observed in the SPD group, which also had decreased levels of insulin-stimulated tyrosine phosphorylated pp185 in muscle and adipose tissue, when compared to the other groups. The ExPD group had increased levels of insulin-stimulated tyrosine phosphorylated pp185 compared to the SPD group, but showed no significant difference when compared to the SCN and ExCN groups. RT reversed both the insulin resistance (IR) and the IS alterations in rats with induced periodontitis, and decreased the insulin and TNF-α levels. Therefore, the results of show the importance of RT in preventing or reversing IR in rats with periodontitis.

scholarly journals ANTIHYPERCHOLESTROLEMIC ACTIVITY OF AQUEOUS EXTRACT OF BELIMBING WULUH (Averrhoa bilimbi Linn.) ON HYPERCHOLESTEROLEMIC MODELLING WISTAR MALE RATS

2017 ◽  
Vol 22 (1) ◽  
pp. 57
Author(s):  
Bary Azhari ◽  
Sri Luliana ◽  
Robiyanto Robiyanto
Keyword(s):  
Total Cholesterol ◽  
Aqueous Extract ◽  
Negative Control ◽  
Male Rats ◽  
Blood Cholesterol ◽  
Optimal Dosage ◽  
Cholesterol Levels ◽  
Significant Difference ◽  
Male Wistar Rats ◽  
Pap Method

Belimbing wuluh (Averrhoa bilimbi Linn.) has antihypercholesterolemic activity. This study aims to determine antihypercholesterolemic potential, optimal dosage and effect of water extracts of Belimbing wuluh (Averrhoa bilimbi Linn) on the index of rat organs. Test animals used were male Wistar rats, divided into 4 groups: normal control, negative control, positive conrol (simvastatin 0.18 mg/kg), and the aqueous extracts of fruit Belimbing wuluh dose of 63 mg/kg. The parameter which was measured in this study were total cholesterol levels which obtained using CHOD-PAP method, the weight of rats for 50 days, and organ indexes. Those parameters were further tested with One Way ANOVA. In parameter decrease blood cholesterol levels of rats between groups positive and group aqueous extract of the fruit starfruit  dose of 63 mg/kg did not experience a statistically significant difference. Meanwhile, the group aqueous extract of the fruit starfruit dose 63 mg/kg and a negative control experiencing significant difference (p<0.05). Conclusion, aqueous extract of the fruit starfruit dose of 63 mg/kg had the effect antihypercholesterolemic seen from the decrease in total cholesterol levels from day 30 and day 50, as well as statistically significant different from the negative control, and can affect the index spleen and pancreas but does not affect the index of the kidneys, liver, heart, and lungs.

Effect of moderate and high-intensity endurance and resistance training on serum concentrations of MSTN and IGF-1 in old male Wistar rats

2019 ◽  
Vol 38 (2) ◽  
Author(s):  
Zohreh Shanazari ◽  
Mohammad Faramarzi ◽  
Ebrahim Banitalebi ◽  
Roohullah Hemmati
Keyword(s):  
Resistance Training ◽  
Endurance Training ◽  
High Intensity ◽  
Intracellular Signaling ◽  
Male Rats ◽  
Moderate Intensity ◽  
Exercise Session ◽  
Control Group ◽  
Significance Level ◽  
Significant Difference

Abstract Background Skeletal muscle is very sensitive to extracellular and intracellular signaling evoked by contractions from endurance and resistance exercise. The aim of this study was to compare the effects of moderate- and high-intensity endurance and resistance training on the serum myostatin (MSTN) and insulin-like growth factor (IGF-1) levels in older rats. Materials and methods Fifty old Wistar male rats (23 months old) were randomly divided into four experimental and one control groups, including moderate-endurance training (MET) (n = 10), high-intensity endurance training (EHT) (n = 10), moderate-intensity resistance training (MRT) (n = 10), high-intensity resistance training (HRT) (n = 10), and control group (C) (n = 10). Seventy-two hours after the last exercise session, euthanasia of the rats were rendered unconscious and direct blood samples were collected. Serum IGF-1 and MSTN concentration were measured using the enzyme-linked immuno sorbent assay (ELISA) method. The statistical analysis was performed using one-way analysis of variance (ANOVA) test with a significance level of p ≤ 0.05. Results There was a significant reduction in MSTN and an increase in IGF-1 concentrations was observed between IGF-I levels in high and moderate resistance and endurance training. However, no significant difference was observed in MSTN levels between groups. Discussion Therefore, it appears that resistance training, especially HRT, is effective to increase growth mediators among older rats.

scholarly journals The effect of a 6-week land and resistance training of 13-16 years old swimmers groups to lower limb isokinetic strength values and to swimming performance13-16 yaş grubu yüzücülerde 6 haftalık kara ve direnç antrenmanlarının alt ekstremite izokinetik kuvvet performansına ve yüzme derecelerine etkisi

2016 ◽  
Vol 13 (3) ◽  
pp. 5269 ◽  
Author(s):  
Ayşegül Yapıcı ◽  
Barış Maden ◽  
Gülin Fındıkoğlu
Keyword(s):  
Resistance Training ◽  
Lower Limb ◽  
Swimming Performance ◽  
Left Knee ◽  
Wilcoxon Test ◽  
Positive Development ◽  
Isokinetic Strength ◽  
Significant Difference ◽  
Post Test ◽  
The Right

The aim of this study is to investigate the effect of a 6-week land and resistance training of 13-16 year old swimmers groups to lower limb isokinetic strength values and to swimming performance. 22 swimmers participated in this study. The subjects were divided into three groups (A-B-C) according to their 50m swimming degrees. 25m underwater,25m,50m,75m and 100m freestyle swimming degrees of swimmers were recorded. As isokinetic measurements was applied at 60°/s,180°/s and 240°/s speed and the right and left knee. Kruskal-Wallis is used the differences between groups, the Mann-Whitney U test is used for which group the difference is caused and group differences were analyzed with the Wilcoxon test. Statistically significant difference was found between pre-test and post-test of 25m underwater,25m,50m,75m and 100m freestyle swimming values (p<0.05). In all groups, at 60°/s,180°/s,240°/s, for the right and left knee flexors and extensor, and freestyle swimming degrees positive development is observed. After 6-weeks training, isokinetic strength and swimming degrees of the group C increased 9.25%, whereas B has increased 8.35%. The pre-test and post-test results in 25m underwater,25m,50m,75m and 100m freestyle swimming values were statistically significant between the groups (p<0.05). In this study, it is possible to say that the land and resistance training can make a significant contribution to the performance of the force in this age group swimmer. ÖzetBu çalışmanın amacı; 13-16 yaş grubu yüzücülerde 6 haftalık kara ve direnç antrenmanlarının alt ekstremite izokinetik kuvvet değerlerine ve yüzme performansına etkisini araştırmaktır. Çalışmaya 22 yüzücü katılmıştır. Denekler 50m yüzme derecelerine göre üç gruba (A-B-C) ayrılmıştır. Yüzücülerin 25m sualtı, 25m, 50m, 75m ve 100m serbest stildeki yüzme dereceleri kayıt edilmiştir. İzokinetik ölçümler 60°/s, 180°/s ve 240°/s hızda sağ ve sol diz için uygulanmıştır. Gruplar arası farka Kruskal Wallis, farkın hangi gruptan kaynaklandığına Mann Whitney U testi, grup içi farklara ise Wilcoxon testi ile bakılmıştır. Ön test ve son test 25m sualtı, 25m, 50m, 75m ve 100m serbest yüzme değerlerinde istatistiksel olarak anlamlı fark bulunmuştur (p<0.05). Tüm grupların, 60º/s, 180º/s ve 240º/s hızda sağ ve sol diz için fleksör ve ektensörlerin tepe tork değerlerinde ve serbest yüzme derecelerinde sayısal olarak pozitif bir gelişim görülmüştür. 6 haftalık antrenman sonunda, C grubunun izokinetik kuvvet ve yüzme derecelerindeki artış (%9.25) iken, B grubunda bu değer (%8.35) çıkmıştır. Yapılan istatistiksel analiz sonucu ön test ve son test 25m sualtı, 25m, 50m, 75m ve 100m serbest yüzme değerlerinde gruplar arasında istatistiksel olarak anlamlı fark bulunmuştur (p<0.05). Bu çalışmada, bu yaş grubu yüzücülerde yapılan kara ve direnç antrenmanlarının kuvvet performansına önemli bir katkı sağlayabileceği söylenebilir.

scholarly journals The Effectiveness of Binahong (Anredera cordifolia (Ten.) Steenis) Extract in Promoting Fertility in Male Wistar Rats after Exposure to Cigarette Smoke

2021 ◽  
Vol 9 (A) ◽  
pp. 123-128
Author(s):  
Achmad Ramadhan
Keyword(s):  
Body Weight ◽  
Cigarette Smoke ◽  
Wistar Rats ◽  
Smoke Exposure ◽  
Male Rats ◽  
Male Rat ◽  
Cigarette Smoke Exposure ◽  
Testicular Weight ◽  
Significant Difference ◽  
Male Wistar Rats

BACKGROUND: Cigarette smoke has a variety of dangerous chemicals and free radicals that can potentially cause infertility. One of the plants that are reported to have medicinal properties and have active compounds as antioxidants is Binahong (Anredera cordifolia (Ten.) Steenis). AIM: This study aims to investigate the effectiveness of A. cordifolia leaf extract (ACLE) in increasing the fertility of male Wistar rats after exposure to cigarette smoke. METHODS: Twenty-four adult male rats were divided into six groups (age 8–10 weeks, weight 200–250 g): Group 1 (normal control) received aquades (1 ml/day) without being given cigarette smoke, Group 2 received exposure to smoke without being given ACLE, Group 3 received cigarette smoke exposure + 25 mg/kg ACLE, Group 4 received cigarette smoke exposure + 50 mg/kg ACLE, Group 5 received cigarette smoke exposure + 75 mg/kg ACLE, and Group 6 received exposure to cigarette smoke + 100 mg/kg of ACLE. To produce smoke from cigarettes and expose rats to the smoke, a Smoke chamber is used. Rats in the treatment group were exposed to cigarette smoke for 2 weeks (40–60 s daily for 6 days each week). The evaluation of male rat fertility was carried out by measuring body weight, genital weight (testis and epididymis), and spermatozoa spermogram (velocity, motility, morphology, and total number). RESULTS: The least significance different test results showed no significant difference in the rate of weight gain between treatments, standard control, and negative control groups. The average testicular weight of rats exposed to cigarette smoke for 14 days was significantly different from normal controls and doses of 50, 75, and 100 mg/kg body weight. However, at a dose of 25 mg/kg of body weight had not shown a significant increase compared to control. The average spermatozoa velocity reached 12.43 mm2/s and 13.36 mm2/s. The spermatozoa velocity increased significantly at a dose of 100 mg/kg body weight. CONCLUSIONS: ACLE at a dose of 100 mg/kg body weight was effective in increasing the fertility of male Wistar rats exposed to cigarette smoke.

Sign in / Sign up

Export Citation Format

Share Document