Background: Chemotherapy agents can cause ovarian dysfunction and eventually lead to infertility. This study investigated the effect of nasturtium officinale extract on the ovarian function following the toxicity induced by doxorubicin in female rats. Methods: Forty eight female Wistar rats (180-210g) were randomly divided in six groups as follows: Group I, normal rats receiving 1ml normal saline; Group II and III receiving 25 and 75 mg/kg of the extract daily by gavage for 21 days. Groups IV, V and VI receiving 10 mg/kg doxorubicin intraperitoneally on the first day. In addition, Group IV and V received 25 and 75 mg/kg of the extract, respectively. The serum levels of estrogen, progesterone, Follicle Stimulating Hormone (FSH), Luteinizing Hormone (LH) and ovarian Malondialdehyde (MDA) were determined after 21 days of treatment. The mean numbers of various graafian follicles and corpus lutea were recorded after treatment. Results: The mean serum FSH level in Group VI (0.11±0.01) significantly reduced compared to those in Groups II (0.21±0.05) and III (0.23±0.01), (P<0.05). The mean serum LH and estrogen levels in Group VI (0.16±0.08) reduced insignificantly compared to those in the controls (0.21±0.02), and in Groups II (0.23±0.03) and III (0.22±0.09). A significant reduction in the number of primary, secondary and graafian follicles were observed in Group VI compared to the control group (P<0.05). The serum MDA level significantly declined in Group V compared to that in Group VI (P<0.05). Conclusion: The nasturtium officinale extract attenuated the toxic effect of doxorubicin on the rat ovaries and protected the cell division in the follicles and the oocytes maturation.
BackgroundDespite substantial research into the topic and valiant surgical efforts, reconstruction of peripheral nerve injury remains a challenging surgery. This study was conducted to evaluate the effectiveness of axonal regeneration of a transected sciatic nerve through a vein conduit containing degenerated skeletal muscle compared with axonal regeneration in a transected sciatic nerve through degenerated skeletal muscle alone.MethodsIn two of the three experimental rat groups, 10 mm of the left sciatic nerve was transected and removed. The proximal and distal ends of the transected sciatic nerve were then approximated and surrounded with either (a) a degenerated skeletal muscle graft; or (b) a graft containing both degenerated skeletal muscle and vein. In the group receiving the combined vein and skeletal muscle graft, the vein walls were subsequently sutured to the proximal and distal nerve stump epineurium. Sciatic functional index (SFI) was used for assessment of functional recovery. Tracing study and histological procedures were used to assess axonal regeneration.ResultsAt 60 days, the gait functional recovery as well as the mean number of myelinated axons in the middle and distal parts of the sciatic nerve significantly increased in the group with the vein graft compared to rats with only the muscular graft (P < 0.05). Mean diameter of myelinated nerve fiber of the distal sciatic nerve was also improved with the vein graft compared to the muscle graft alone (P < 0.05). The mean number of DiI-labeled motor neurons in the L4-L5 spinal segment increased in the vein with muscle group but was not significantly different between the two groups.ConclusionsThese findings demonstrated that a graft consisting of not only predegenerated muscle, but also predegenerated muscle with vein more effectively supported nerve regeneration, thus promoting functional recovery after sciatic nerve injury in rats.
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In conclusion, chronic methanol administration caused severe memory impairments and several pathological outcomes in the hippocampus of adolescent rats which were improved by LED therapy.
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