By Eberhard Nieschlag (auth.), Eberhard Nieschlag, Hermann M. Behre, Susan Nieschlag (eds.)
This is the 3rd, absolutely revised variation of a well known textbook that maintains to symbolize the ideal within the literature on scientific andrology. It examines intensive all facets of male reproductive wellbeing and fitness, encompassing the elemental body structure of male reproductive functionality and quite a lot of issues. all the chapters is written by means of notable specialists within the box. one of the issues coated are:
- Testicular function
- Sperm maturation and fertilization
- Diagnostic strategies
- Primary and secondary hypogonadism
- Late-onset hypogonadism
- Erectile dysfunction
- Genetic disorders
- Environmental influences
- Psychology and sexual medicine
- Testosterone therapy
- Assisted replica: TESE and ICSI
- Male contraception
- Ethics in andrology
This quantity will function a textbook for the newcomer to andrology, whereas offering the skilled healthcare professional with a worthwhile reference paintings. it's going to entice all who're eager about male reproductive future health:
- Basic scientists
Read or Download Andrology: Male Reproductive Health and Dysfunction PDF
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Additional info for Andrology: Male Reproductive Health and Dysfunction
These processes include 2 Physiology of Testicular Function condensation and structural shaping of the cell nucleus, the formation of a flagellum and the expulsion of a large part of cytoplasm. The overall process is called spermiogenesis and, from a qualitative point of view, is identical in all species. It is useful to divide spermiogenesis into four phases: Golgi, cap, acrosomal and maturation phases. During the Golgi phase acrosomal bubbles and craniocaudal symmetry appear. In the cap phase the spermatids become elongated and the acrosome develops, covering the cranial half to two-thirds of the spermatid.
Phylogenetically GnRH is a rather ancient hormone, highly conserved among different species with 80% sequence identity between mammals and fish. In the precursor with a length of 92 amino acids, GnRH is preceded by a signal peptide consisting of 24 amino acids, and followed by a stretch of 56 amino acids forming the GnRHassociated peptide (GAP). PreproGnRH is processed in the rough endoplasmic reticulum and in the Golgi complex, the first step being the removal of the signal peptide and the cyclization of the aminoterminal Gln residue to pyroGlu.
Activating and inactivating mutations of the gonadotropin receptors have been identified. The biological consequences of these mutations are described below and in Chap. 13.