بررسی اثرات L-Arginine و L-NAME در نیمه‌ی اول بارداری بر بافت بیضه‌ی جنین و فرزند موش سوری قبل و بعد از تولد

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 کارشناس ارشد، گروه زیست‌شناسی جانوری، دانشکده‌ی علوم زیستی، دانشگاه خوارزمی، تهران، ایران

2 استاد، گروه زیست‌شناسی جانوری، دانشکده‌ی علوم زیستی، دانشگاه خوارزمی، تهران، ایران

3 استاد، گروه پاتولوژی، دانشکده‌ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

4 مربی پژوهشی، مرکز تحقیقات علوم اعصاب اصفهان، بیمارستان الزهرا (س)، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

چکیده

مقدمه: با توجه به اهمیت نقش نیتریک اکسید (NO یا Nitric oxide) در عملکرد انواع سیستم‌های فیزیولوژیک بدن از جمله سیستم تولید مثل و سطح بحرانی نیتریک اکسید در برقراری بارداری موفقیت‌آمیز، تغییرات بافت بیضه‌ی جنین و فرزندان موش سوری با تحریک و مهار سنتز این مولکول در مادر باردار بررسی شد.روش‌ها: 35 سر موش ماده‌ی بالغ پس از مشاهده‌ی پلاک، در پنج گروه هفت‌تایی به طور تصادفی تقسیم شدند. گروه اول گروه شاهد در نظر گرفته شد. سایر گروه‌ها به ترتیب ال- آرژنین (L-Arginin)، نیترو ال- آرژنین متیل استر (L-NAME یا L-nitro-arginine methyl ester)، نرمال سالین و مخلوط دو ماده‌ی L-Arginin و L-NAME را به طور هم‌زمان و به صورت تزریق داخل صفاقی، در سه روز مشخص نیمه‌ی اول حاملگی دریافت کردند. یک روز پیش از زمان زایمان و پیش از بلوغ، بیضه‌ی جنین‌ها و فرزندان به صورت لاپاراتومی خارج گردید. تغییرات ایجاد شده در نمونه‌ها پس از تثبیت، پاساژ بافتی و رنگ‌آمیزی عمومی هماتوکسیلین- ائوزین (H&E یا Hematoxylin and Eosin) مورد بررسی قرار گرفت.یافته‌ها: در بافت بیضه‌ی جنین و فرزند موش‌های دریافت کننده‌ی L-Arginin، به هم ریختگی نظم سلولی، کاهش قطر غلاف سفید و لوله‌های منی‌ساز مشاهده شد؛ اما تزریق L-NAME به موش باردار افزایش قطر غلاف سفید و کاهش در دره‌های سلولی به علاوه از هم گسیختگی نظم سلولی را در بافت بیضه‌ی جنین و فرزندان آن‌ها به همراه داشت.نتیجه‌گیری: از مطالعه‌ی حاضر چنین بر می‌آید که مهار و تحریک سنتز نیتریک اکسید در بدن مادر باعث ایجاد ناهنجاری و بی‌نظمی در بافت بیضه‌ی فرزندان می‌شود که اختلال در عملکرد بیضه و تأثیر بر قدرت باروری را به همراه دارد.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of L-Arginine and L-Nitro-Arginine Methyl Ester (L-NAME) in the First Half of Pregnancy on Embryos and Offspring Testis Tissue Before and After Birth

نویسندگان [English]

  • Sima Sabbagh 1
  • Mahnaz Azarnia 2
  • Mojgan Mokhtari 3
  • Mahsa Rostami 1
  • Leila Dehghani 4
1 Department of Animal Biology, School of Biological Sciences, Kharazmi University, Tehran, Iran
2 Professor, Department of Animal Biology, School of Biological Sciences, Kharazmi University, Tehran, Iran
3 Professor, Department of Pathology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
4 Research Instructor, Isfahan Neurosciences Research Center, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
چکیده [English]

Background: Considering nitric oxide (NO) as one of the important molecular regulators in genital organs, and according to the critical level of it in establishing a successful pregnancy, we assessed the changes in testis tissue of embryo and offspring via treating pregnant mice.Methods: 35 adult female mice, after observing the vaginal plug, were randomly divided into five groups of seven. The first one was the control group. Remaining groups, respectively, received L-Arginin, L-nitro-arginine methyl ester (L-NAME), normal saline, and a mixture of L-Arginin and L–NAME, three days in first half of pregnancy. One day before the delivery, and before maturation, embryos’ and offspring’s testes were removed through laparotomy. Pathological and histological changes of samples were assessed using histotechnique method and general Hematoxylin and Eosin (H&E) staining.Findings: In L-NAME group, in addition to disorganization in tissue order, tunica albuginea diameter was considerably increased whereas the number of germ cells was significantly decreased in embryos and offspring. L. Arginine treatment in pregnant mice led to reduce the number of seminiferous tubules and decrease tunica albuginea diameter and dissemination.Conclusion: Stimulating or inhibiting the synthesis of nitric oxide in pregnant mice can interfere with the organ normal function and influence fertility parameters via causing abnormally and malformations in testis tissue, specially in the next generation.

کلیدواژه‌ها [English]

  • Nitric oxide
  • L-arginine
  • L-NAME
  • Testis
  • Embryonic development
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