Development of human semen cryobanking (1776–1964) (Sherman 1980) Date Contributor Contribution 1776 Spallanzani First low-temperature observations 1866 Mantegazza First suggestion of frozen semen bank 1938 Jahnel −269 °C survival, storage…
Histological changes Reference Physiological germ cell loss, Leydig cell loss Holstein (1989) Reduced dark A spermatogonia, giant spermatids, multinucleated spermatogonia Johnson et al. (1990) Lipid droplets in Sertoli cells, megalospermatocytes…
Fig. 12.1 Risk factors for cancer and impact of radiation therapy on male fertility 12.4 Radiation and Spermatogenesis 12.4.1 Animal Studies 12.4.1.1 Rodent Model Studies conducted on different rodent models…
© Springer India 2017Karthik Gunasekaran and N Pandiyan (eds.)Male Infertility10.1007/978-81-322-3604-7_9 9. Varicocele Karthik Gunasekaran1 (1) The Metromale Clinic: Super Specialty Clinic for Male Sexual Health and Fertility, No. 1, Crescent Park Street, T. Nagar, Landmark: Near…
Fig. 2.1 Hypothalamo–pituitary–testicular axis (graphical representation). GnRH gonadotropin-releasing hormone, LH luteinizing hormone, FSH follicle-stimulating hormone, − feedback inhibition, + stimulation Conclusion The process of spermatogenesis involves a complex interplay of…
© Springer India 2017Karthik Gunasekaran and N Pandiyan (eds.)Male Infertility10.1007/978-81-322-3604-7_3 3. Ultrastructure of Human Spermatozoa Priya Kannan1, 2, 3 (1) Academy of Clinical Embryologists, Bangalore, India (2) Medical Genetics, The Tamil Nadu Dr. MGR Medical University,…
Obstructive azoospermia of genetic origin Cystic fibrosis Congenital bilateral absence of the vas deferens (CBAVD) Congenital unilateral absence of the vas deferens (CUAVD) Congenital bilateral epididymal obstruction and normal vasa…
Semen characteristics WHO 1980 WHO 1987 WHO 1992 WHO 1999 WHO 2010a Volume (ml) ND ≥2 ≥2 ≥2 1.5 Sperm count (106/ml) 20-200 ≥20 ≥20 ≥20 15 Total sperm count…
Fig. 22.1 Histologic features of phosphate enema effect. Superficial mucosal hemorrhage and focal mucin depletion of the colonic surface epithelium are noted. There is no inflammation of the crypts (hematoxylin-eosin…
Fig. 45.1 Typical initial PEG/PRG tube with internal “bumper” and external “crossbar” When a G-tube is placed surgically, the type of initial tube can vary from a standard mushroom-type tube…
