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Showing 3 results for Animal Model

L Amini, N Tehranian, M Movahedin, F Ramezani Tehrani,
year 14, Issue 56 (12-2015)
Abstract

Background: Increased oxidative stress in women with polycystic ovary syndrome attracted attentions to antioxidant treatments. Calligonum Comosum is a planet with antioxidant propertis.

Objective: This study aimed to investigating Calligonum effect on polycystic ovarian histology of polycystic ovary mouse model.

Methods: Thity two female NMRI mice with 25-30 gr weight and 8 weeks age were investigated. A single dose of estradiol valerate (40 mg/kg; im) was used for induce polycystic ovarian morphology. Calligonum Comosom extract (20 mg/kg/ week; ip) was injected for 4 consequent weeks. In sham group, only DMSO was used. After 4 weeks, blood and histological samples were prepared to study.

Results: There was no significant effect of 20 mg/kg Calligonum on polycystic ovarian morphology mouse model.

Conclusion: The effect of other doses of Calligonum Comosum on fertility or adverse effect of this planet need to be more investigated.


Samira Shirooie, Seyed Kimia Jasemi, Golale Babaei, Mohammad Reza Morovati, Maryam Ghanbari-Movahed, Saman Barzegar, Mohammad Hosein Farzaei,
year 23, Issue 89 (3-2024)
Abstract

Background: Opioids are essential for pain treatment, but their long-term usage results in tolerance. Naringenin, a natural flavonoid found in fruit, inhibits the enzyme that causes opioid tolerance, making it effective in treating neurodegenerative diseases. Objective: In this study, we evaluate the role of naringenin in morphine-induced tolerance and the glycogen synthase kinase-3beta (GSK-3β) enzyme. Methods: To induce tolerance to morphine in mice, repeated injections of morphine were performed for five days, and on the fifth day, a single dose of morphine was injected intraperitoneally. Pain tests (hot plate and tail flick) were performed on the first, third, and fifth days of injections. To evaluate the impact of naringenin, 45 minutes before each morphine injection, doses of 25, 50, and 100 mg/kg were administrated orally. On the last day, brain tissues were checked for biochemical factors and changes in the phosphorylation of the enzyme by the immunohistochemical method. Results: The results indicated that the simultaneous use of naringenin significantly increases the analgesia delay compared to the morphine group (P < 0.001) on the third and fifth days. Naringenin at all concentrations decreased the nitrite level caused by morphine. It showed protective effects on morphine tolerance (P < 0.001) in the p-GSSer640 immunohistochemical assay and reduced the phosphorylation of p-GSSer640 by GSK-3β, activated by chronic morphine administration. Conclusion: Based on the results of the present study, the beneficial effect of naringenin on the GSK enzyme in morphine-induced tolerance is confirmed, but more studies are needed to investigate its impact mechanism.

Fatemeh Sadrforati, Pejman Mortazavi, Mohammad Amin Eslampour,
year 23, Issue 92 (11-2024)
Abstract

Background: Malva neglecta is a commonly used medicinal plant known for its content of tannins, hydroxycinnamic acids, alkaloids, flavonoids, saponins, anthocyanins, and flavonols. Objective: The objective of this research was to assess the effects of M. neglecta extract on male rat infertility. Methods: Forty adult male rats were divided into eight groups. The M. neglecta extract was administered daily for 28 days. At the conclusion of the treatment period, all animals were anesthetized with ether. Following euthanasia, dissection was performed, and sperm morphology, viability, and motility were assessed in the epididymis. The right testis was subjected to histological analysis after tissue processing and H/E staining, with cell counts conducted under a light microscope. The left testis was examined for superoxide dismutase (SOD) and malondialdehyde (MDA) enzyme levels. Results: Sperm analysis showed a significant improvement in viability, motility, and concentration in the infertile groups treated with M. neglecta extract at doses of 100, 200, and 400 mg/kg. SOD enzyme levels were notably higher in the experimental groups receiving the extract, surpassing those of the healthy control group. Furthermore, increasing the extract dosage led to a rise in SOD production within the infertile groups. MDA levels, an indicator of lipid peroxidation, were lower in the experimental groups compared to the control group, with the MDA concentration nearly identical to that of the healthy controls. This suggests that M. neglecta extract significantly reduced lipid peroxidation. Conclusion: The findings indicate that M. neglecta extract has a notable positive effect on spermatogenesis, sperm viability, motility, and concentration, particularly under oxidative stress conditions.


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