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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Advanced Medical Sciences and Applied Technologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Rat,spermatogenesis,Testis,Busulfan,Subfertility
- چکیده:
- چکیده انگلیسی: Objectives: The current study aimed at evaluating testis parameters and spermatogenesis changes in male rats administrated by different busulfan doses and time to construct a subfertile animal model by stereological methods.Materials and Methods: In the present study, 150 male Wistar rats randomly divided into 5 groups. All experimental groups were treated by different concentrations of busulfan (0.0, 2.5, 5, 10, and 15 mg/kg). Rats were sacrificed 1, 15, and 30 days after busulfan treatment. The tissue processing was done for stereological study and the results were analyzed by the one-way ANOVA followed by the Duncan test. Results: The most stereological parameters such as testes weight and volume, tubules volume density, interstitial tissue (P<0.05), and germinal epithelium (P<0.01) were significantly reduced by busulfan treatment. Also, at different busulfan doses, the number of spermatogenic cells including spermatogonia (P<0.05), spermatocyte, round and elongated spermatid, and the Sertoli and Leydig cells (P<0.01) significantly decreased, compared with those of the control group. The decline was more obvious in higher busulfan doses and time (from the day 15 to 30) (P<0.05). Conclusion: Most of testicular stereological parameters reduced during 15 days onwards after busulfan treatment in a dose-dependent manner.
- انتشار مقاله: 21-07-1396
- نویسندگان: Soghra Bahmanpour,Bahia Namavar Jahromi,Farhad Koohpeyma,Mojtaba Keshavarz,Azizollah Bakhtari
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Platelet rich fibrin,Platelet-Rich plasma,knee,cartilage,Chemokine CXCL12
- چکیده:
- چکیده انگلیسی: Background: The purpose of this study was to create biomaterial scaffolds like platelet-rich plasma (PRP) and platelet-rich fibrin (PRF) containing stromal cell-derived factor-1 (SDF1) as a chemokine to induce hyaline cartilage regeneration of rabbit knee in a full thickness defect.Methods: We created a full thickness defect in the trochlear groove of thirty-six bilateral knees of eighteen mature male rabbits. The knees were randomly divided into six groups (group I: untreated control, group II: PRP, group III: PRF, group IV: Gelatin+SDF1, group V: PRP+SDF1, and group VI: PRF+SDF1). After four weeks, the tissue specimens were evaluated by macroscopic examination and histological grading, immunofluorescent staining for collagen type II, and analyzed for cartilage marker genes by real-time PCR. The data were compared using statistical methods (SPSS 20, Kruskal-Wallis test, Bonferroni post hoc test and P<0.05).Results: Macroscopic evaluations revealed that international cartilage repair society (ICRS) scores of the PRF+SDF1 group were higher than other groups. Microscopic analysis showed that the ICRS score of the PRP group was significantly lower than other groups. Immunofluorescent staining for collagen II demonstrated a remarkable distribution of type II collagen in the Gel+SDF1, PRP+SDF1 and PRF+SDF1 groups compared with other groups. Real-time PCR analysis revealed that mRNA expression of SOX9 and aggrecan were significantly greater in the PRF+SDF1, PRP+SDF1, Gel+SDF1 and PRF groups than the control group (P<0.05).Conclusion: Our results indicate that implantation of PRF scaffold containing SDF1 led to the greatest evaluation scores of full-thickness lesions in rabbits.
- انتشار مقاله: 13-05-1394
- نویسندگان: Soghra Bahmanpour,Maryam Ghasemi,Mohsen Sadeghi-Naini,Iraj Ragerdi Kashani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: mesenchymal stem cell,Scaffold,Hepatocyte,collagen,Wharton jelly
- چکیده:
- چکیده انگلیسی: Background: Human Wharton’s jelly mesenchymal stem cells (HWJMSCs) express liver-specific markers such as albumin, alpha-fetoprotein, cytokeratin-19, cytokeratin-18, and glucose-6-phosphatase. Therefore, they can be considered as a good source for cell replacement therapy for liver diseases. This study aimed to evaluate the effects of various culture systems on the hepatocyte-specific gene expression pattern of naïve HWJMSCs.Methods: HWJMSCs were characterized as MSCs by detecting the surface CD markers and capability to differentiate toward osteoblast and adipocyte. HWJMSCs were cultured in 2D collagen films and 3D collagen scaffolds for 21 days and were compared to control cultures. Real time RT-PCR was used to evaluate the expression of liver-specific genes.Results: The HWJMSCs which were grown on non-coated culture plates expressed cytokeratin-18 and -19, alpha-fetoprotein, albumin, glucose-6-phosphatase, and claudin. The expression of the hepatic nuclear factor 4 (HNF4) was very low. The cells showed a significant increase in caludin expression when they cultured in 3D collagen scaffolds compared to the conventional monolayer culture and 2D collagen scaffold.Conclusion: Various culture systems did not influence on hepatocyte specific marker expression by HWJMSCs, except for claudin. The expression of claudin showed that 3D collagen scaffold provided the extracellular matrix for induction of the cells to interconnect with each other.
- انتشار مقاله: 05-12-1392
- نویسندگان: Zahra Khodabandeh,Zahra Vojdani,Tahereh Talaei-Khozani,Mansooreh Jaberipour,Ahmad Hosseini,Soghra Bahmanpour
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Embryonic stem cells,Bone morphogenetic protein 4,Embryoid body
- چکیده:
- چکیده انگلیسی: Background: Activation of bone morphogenetic protein 4 (BMP4) signaling pathway in embryonic stem (ES) cells plays an important role in controlling cell proliferation, differentiation, and apoptosis. Adverse effects of BMP4 occur in a time dependent manner; however, little is known about the effect of different time exposure of this growth factor on cell number in culture media. In this study, we investigated the role of two different exposure times to BMP4 in cell viability, embryoid body (EB), size, and cavitation of ES cells.Methods: Embryonic stem cells (R1 and B1 lines) were released from the feeder cell layers and were cultured using EBs protocol by using the hanging drop method and monolayer culture system. The cells were cultured for 5 days with 100 ng/mL BMP4 from the beginning (++BMP4) or after 48 h (+BMP4) of culture and their cell number were counted by trypan blue staining. The data were analyzed using non-parametric two-tailed Mann-Whitney test. P
- انتشار مقاله: 06-05-1392
- نویسندگان: Nehleh Zarei Fard,Tahereh Talaei-Khozani,Soghra Bahmanpour,Tahereh Esmaeilpour
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Sperm Motility,Follicular fluid,Platelet-activating factor,LDH-C,Asthenozoospermia
- چکیده:
- چکیده انگلیسی: Background: Application of follicular fluid (FF) and platelet-activating factor (PAF) in artificial insemination improves sperm motility. Lactate dehydrogenase C (LDH-C) is a key enzyme for sperm motility. In this study, the effects of FF and PAF on the sperm motility index and LDH-C expression were investigated. Moreover, LDH-C expression was compared between asthenozoospermic and normozoospermic samples. Methods: The expression of LDH-C was examined by quantitative real-time polymerase chain reaction (q-RT PCR) and western blotting after it was treated with optimized concentrations of FF and PAF in twenty asthenozoospermic samples. Also, LDH-C expression was evaluated in five normozoospermic samples. Results: Samples with 75% FF and 100 nM of PAF had an increase in their percentages of progressive and slowly motile sperms and a decrease in their percentages of non-progressive and non-motile sperms. Moreover, LDH-C mRNA transcripts were not changed following PAF and FF treatment, and LDH-C protein was detected in highly progressive motile specimens treated with FF in the asthenozoospermic samples. Furthermore, LDH-C expression was more detectable in the normal sperms. Conclusion: Our results indicated that PAF had more beneficial effects than FF on sperm motility in the asthenozoospermic samples (P=0.0001), although the LDH-C expressions of the sperms were not changed significantly in both groups. We found no association between LDH-C expression and sperm motility after FF and PAF actions. This finding, however, requires further investigation. The fact that LDH-C protein was detected in the normozoospermic, but not asthenozoospermic, samples could be cited as a reason for the infertility in these patients.
- انتشار مقاله: 01-10-1392
- نویسندگان: Tahereh Esmaeilpour,Mohmmad-Reza Zarei,Soghra Bahmanpour,Elham Aliabadi,Ahmad Hosseini,Mansooreh Jaberipour
- مشاهده