جستجوی مقالات مرتبط با کلیدواژه "عضله ی اسکلتی" در نشریات گروه "پزشکی"

Skeletal muscle is a major endocrine organ that releases myokines and plays a pivotal role in the communication between muscle and other tissues. The present study aimed to determine the effect of a combined training course on the myogenesis process through the pathway of decorin and spark genes in the muscles of immature rats.

In the present study, ten two-week-old male rats were randomly divided into two control and training groups. The resistance-aerobic training program was carried out for 6 weeks on separate days. The rats were dissected 48 hours after the last training session, and the gastrocnemius and soleus muscles were separated and used for pathological tests.

Based on statistical analysis, it was found that in the training group, the expression of Spark gene (P ≤ 0.001) and decorin (P ≤ 0.001) in the soleus muscle and the expression of Spark gene (P ≤ 0.028) and decorin (P ≤ 0.001) in the gastrocnemius muscle had higher values than the control group. However, the expression values of Spark (P ≤ 0.015) and decorin (P ≤ 0.001) genes in the soleus muscle were significantly higher compared to the calf muscle.

The results showed that myogenesis increased due to resistance-aerobic training in immature male rats, which was associated with increased expression of the decorin spark gene in both slow and fast-twitch muscle fibers. However, the expression of both spark and decorin genes in the slow-twitch fiber had higher values than the fast-twitch fibers, which indicates that this type of muscle fiber is more trainable.

The aim of the present study was determination of the effect of eight weeks of Endurance Training (ET) on amount of KIF5B protein in Soleus and Extensor Digital Longus muscle tissue in aged male Wistar race rats.

12 Aged male rats with an average age of eighteen to twenty-four months and an average weight of 407.83 ± 21.29 grams and 6 young rats with an average age of eight to ten weeks and an average weight of 180.67 ± 10.36 grams were randomly divided into 3 groups of six series (aged endurance training, aged sham exercise and young sham exercise). The aged endurance training group ran continuously on a treadmill for 15 to 60 minutes with intensity of 7.5-15 meter/ Min, 5 days a week for eight weeks. To measure the amount of KIF5B protein, ELISA method and to test the hypotheses, one-way analysis of variance and Tukey's post hoc test were used.

Following aging, the amount of KIF5B protein decreased significantly in soleus and EDL muscle. Eight weeks of ET caused a significant increase in the amount of KIF5B protein in the soleus and EDL compared to the aged sham exercise. The ratio of the weight of Soleus and EDL to body weight in the ET group had a significant increase compared to the aged sham exercise.

Following a regular training period of ET, the amount of KIF5B protein in the soleus and EDL muscles as well as the peak running speed of aged male rats increased and reduced sarcopenia by increasing the relative weight of soleus and EDL muscles in them.