مطالعه آناتومیکی و بافت‏ شناسی ساختار بیضه داخل مغابنی در الاغ بالغ

نوع مقاله : علوم پایه (بیوشیمی، آناتومی، جنین، بافت شناسی و فیزیولوژی)

نویسندگان

1 گروه علوم پایه، دانشکده دامپزشکی، دانشگاه تبریز، تبریز، ایران

2 گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه تبریز، تبریز، ایران

3 گروه علوم پایه، دانشکده دامپزشکی دانشگاه تهران، تهران، ایران

چکیده

زمینه مطالعه: نهان‏بیضگی نقصی در
فرود یک یا هر دو بیضه به درون کیسۀ اسکرتوم است. هدف: هدف از پژوهش حاضر
توصیف ساختار آناتومیکی و بافت‏شناسی بیضۀ داخل مغابنی در الاغ بالای 7 سال بود. روش
کار:
در این مطالعه بعد از بررسی 59 الاغ، سه رأس با نهان‏بیضگی داخل مغابنی
یک‏طرفه شناسایی شدند. پس از آسان‏کشی آن
ها، بیضه‏ها از بدن
بیرون آورده شده و مورد بررسی بیومتریک قرار گرفتند. سپس نمونه‏ها با فرمالین ده
درصد تثبیت و پس از تهیۀ مقاطع، با استفاده از هماتوکسین-ائوزین و
PAS رنگ‏آمیزی شده و زیر میکروسکوپ نوری بررسی شدند. نتایج:
نتایج نشان داد که بیضه‏های داخل مغابنی سفت و فاقد اپیدیدیمِ مشخص بوده و در مقایسه
با بیضه‏های داخل اسکروتومی اندازه و وزن کمتری دارند. تفاوت در وزن بیضه‏ها داخل
مغابنی نسبت به بیضه‏های دیگر از نظر آماری معنی
دار بود (05/0>p).
لوله‏های اسپرم‏ساز شکل طبیعی خود را از دست داده بودند و حفرۀ داخلی لوله‏ها فاقد
سلول‏های زایگر بوده و تنها تعداد محدودی سلول سرتولی دیده شد. لوله‏های
باقی‏مانده تنها در بخش مدیاستن بافت بیضه قابل مشاهده بود و بخش‏های قشری و نواحی
زیر کپسول فاقد لوله‏ها بودند و توسط بافت همبند سست پرعروق اشغال شده بودند. نتیجه‏گیری
نهایی:
نتایج نشان‏دهندۀ این است که بیضه داخل مغابنی در الاغ با سن بالا
ساختار طبیعی خود را کاملاًً از دست داده و بیشتر حاوی بافت همبندی و عروق خونی
می‏باشد

کلیدواژه‌ها


عنوان مقاله [English]

Anatomical and histological study of intrainguinal testis in adult donkey (Equus asinus)

نویسندگان [English]

  • Ghasem Akbari 1
  • Siamak Kazemi-Darabadi 2
  • Masood Adibmoradi 3
  • Davoud Kianifard 1
1 Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
2 Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
3 Department of Basic Science, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
چکیده [English]

BACKGROUND: Cryptorchidism is a congenital anomaly in which one (unilateral cryptorchidism) or both (bilateral cryptorchidism) testes fail to descend into the scrotum.                  OBJECTIVE: The aim of this study was to describe the anatomical and histological structure of the inguinal testis in the adult donkey. METHODS: In this study, after examination of the 59 donkeys, three of them with unilateral cryptorchidism in inguinal region were identified. These animals were euthanized, and their testicles were removed and evaluated biometrically. Then, the samples were fixated in 10% formalin solution and after sectioning, were stained with Hematoxylin-eosin and PAS, and examined under a light microscope. RESULTS: The results showed that the inguinal testes were stiff, epididymis was not determined and their size and weight were less than scrotal testes. The difference between the weight of cryptorchid and healthy testicles was statistically significant (p<0.05). Seminiferous tubules had lost their natural shape and inner cavity tubes did not have germ cells, and only a limited number of Sertoli cells could be seen. Remaining seminiferous tubules were only visible in the mediastinum. The cortical and subcapsular regions were without tubes and were occupied by loose connective tissues. CONCLUSIONS: Results indicated that the inguinal testes in adult donkeys lost their natural structure and more connective tissues and blood vessels are substituted.

کلیدواژه‌ها [English]

  • Anatomy
  • Histology
  • Donkey
  • testis
  • Cryptorchidism
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