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Sunday, August 9, 2020 | History

2 edition of Studies on postnatal testicular changes found in the catalog.

Studies on postnatal testicular changes

Ola Onstad

Studies on postnatal testicular changes

semen quality, and anomalies of reproductive organs in the mink. A clinical, histological, and histochemical study.

by Ola Onstad

  • 264 Want to read
  • 6 Currently reading

Published by Universitetsforlaget in Oslo .
Written in English

    Subjects:
  • Minks.,
  • Testis.

  • Edition Notes

    SeriesActa endocrinologica. Supplementum -- no. 117., Acta endocrinologica -- 117.
    The Physical Object
    Pagination177 p.
    Number of Pages177
    ID Numbers
    Open LibraryOL14211860M

    studies reported adecline intesticular sizeandcircu-lating testosterone levels inolder men (Stearns eta!, ; Baker etal,). More recent studies, how-ever, employing only elite elderly men carefully preselected toexclude concomitant illnesses have not demonstrated afallineither testicular sizeortestos-Cited by:   This study is the first to employ PCNA and RBM markers to study early germ cell migration and development in the neonatal mouse testis. The dual expression of PCNA in germ and Sertoli cells provided an excellent proliferative marker with Cited by:

      Testicular torsion presents as acute-onset severe scrotal pain, commonly with associated scrotal swelling and erythema. Nausea and vomiting are common, as are local scrotal redness and pain (see Presentation).. Testicular torsion is a surgical emergency, and all efforts should be aimed at bringing the patient to the operating room as quickly as possible within the limits of surgical and. A recent study has looked at the postnatal development of Leydig cells from stem cells: early postnatal testis - interstitial compartment undifferentiated mesenchymal-like stem cells adult testis - peritubular and perivascular locations quiescent stem cells (nestin, PDGFRα, COUP-TFII, CD51 and CD90).

    The rationale for hormonal therapy is based on a consideration of the etiological factors in the development of undescended testes (31). Although the mechanism of effect of gonadotropins on postnatal testicular descent is still unclear, it has been suggested that the spermatic cord and/or the cremasteric muscle may be involved. That case was an example of the early phase of postnatal TT with an abnormal testicular axial position but normal-sized testicles with a homogeneous parenchymal echo pattern and inherent hydrocele, in contrast to the sonographic findings in early NTT proposed by Traubici et al. 12 Therefore, based on our experience, at the early stage of Cited by: 2.


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Studies on postnatal testicular changes by Ola Onstad Download PDF EPUB FB2

Book: Studies on postnatal testicular changes, semen quality, and anomalies of reproductive organs in the mink. A clinical, histological and histo-chemical study.

pp by: 3. Postnatal Histological Changes in the Rabbit Testis: Histological changes of the descending rabbit testis during different stages of development from 0 day to 24 weeks [Ahmed, Yasser, Kamel, Gamal, Abdel Hamid, Mahmoud] on *FREE* shipping on qualifying : Yasser Ahmed, Gamal Kamel, Mahmoud Abdel Hamid.

Studies on postnatal testicular changes, semen quality, and anomalies of reproductive organs in the mink. A clinical, histological, and histochemical study. Onstad by: 1. Postnatal testicular development and testosterone changes in Ghezel ram lambs.

This study was conducted to investigate the histological structure of testis and hormonal changes during prepubertal Ghezel ram lambs. Histometrical evaluation of the testis was performed in Cited by: 4. Cryptorchidism, or undescended testis, is a well-known risk factor for testicular cancer and impaired semen quality in adulthood, conditions which have their origins in early fetal and postnatal life.

In human pregnancy, the interplay of testicular and placental hormones as well as local regulatory factors and control by the hypothalamic-pituitary (HP) axis, lead to testicular descent by by: 3. This study was conducted to investigate the histological structure of testis and hormonal changes during prepubertal Ghezel ram lambs.

Histometrical evaluation of the testis was performed in 36 Ghezel lambs from one to 9 months of by: 4. Microminipigs have become an attractive animal model for the toxicology- and pharmacology-related studies because of their manageable size.

In this study, the development of the testicular interstitium and steroidogenesis in microminipigs, from Author: Akihisa Kangawa, Masayoshi Otake, Satoko Enya, Toshinori Yoshida, Masatoshi Shibata. The present study emphasized an irregular arrangement of the testicular lobules of the donkey during various stages of the postnatal life.

Such arrangement does not allow some lobules to have. Immediate surgery should be performed if testicular torsion is suspected, and should not be delayed by imaging studies if physical examination findings are strongly suggestive.

C 16, 17, 34Cited by: The postnatal development of the rat testicular vasculature was studied, using microangiography and the Indian ink injection technique.

The gross vascular architecture of the rat testis was seen to remain very similar throughout the postnatal development of the by: In the present study, we aimed to further characterize the effect of a week continuous exposure to ELF MF of 14 or microT on testicular germ cell apoptosis in mice.

To permit normal postnatal germ cell development, the mammalian testis undergoes a complex, multi-staged process of descent to the scrotum. Failure of any part of this process leads to congenital cryptorchidism, wherein the malpositioned testis finds itself at the wrong temperature after birth, which leads to secondary germ cell loss and later infertility and risk of by:   The Postnatal Effects of Cryptorchidism.

Authors; Authors and affiliations in most UDT caused by mechanical defects in gubernacular migration the high testicular temperature is the cause of the postnatal loss of testicular function.

O’Bryan MK, et al. Changes in circulating and testicular levels of inhibin A and B and activin A during Cited by: 1.

The present study was designed to investigate electron microscopically the prenatal and early postnatal changes inside the mouse testicular interstitial cells and to associate the changes with the physiological events which have been well documented.

MATERIAL AND METHODS. lateral or “open book” rotation. If successful, the testicle changes its orientation and usually drops lower in the scrotum. The patient reports sudden pain relief.

The direction of rotation described is only the case in about two thirds of patients, and if the initial attempt at. Postnatal Histological Changes in the Rabbit Testis: Histological changes of the descending rabbit testis during different stages of development from 0 day to 24 weeks by Yasser Ahmed, Gamal Kamel, Mahmoud Abdel Hamid Paperback, Pages, Published ISBN / ISBN / Pages:   Postnatal anatomical studies on the male genital system at various ages, particularly the testis and its tubular system, are important to know the anatomical growth and by: 4.

Changes in the Seminiferous Epithelium of the Testes during Postnatal Development in Assam Goat. Postnatal anatomical studies on the male genital system at various ages, particularly the testis and its tubular system, are important to know the anatomical growth and development.

Kakoti D. Studies on body measurements, testicular biometry. Examination of the immature rat testis may be required in prenatal and postnatal development (segment III) and one- and two-generation developmental and reproductive toxicity (DART) studies, male pubertal development and thyroid function assays, juvenile toxicity studies, and when early deaths occur in routine regulatory preclinical safety by: Regular visitors to GPnotebook may notice some changes over the next few months.

We’re looking to improve the look and feel of the site, add some new functionality and add a revamped education section. To facilitate this, we’ll be raising funding through advertising –. The postnatal development of male reproductive system was carried on 54 apparently healthy male local Hill fowl from day old up to 28 weeks of age.

The birds were selected as day 1 and 1, 4, 8, 12, 16, 20, 24 and 28 weeks respectively. The testicles were located in the body cavity just caudal to the respective lungs at the cranial end of the.The small organs inside your scrotum mostly exist to make sperm.

As your testosterone levels fall, sperm production slows and they shrink. If you get hormone replacement therapy, your pituitary.Postnatal anatomical studies on the male genital system at various ages, particularly the testis and its tubular system, are important to know the anatomical growth and development.

A few anatomical studies on testes are reported in goats, namely, biometry of the testes in the Sirohi goats [ by: 4.