Androgen Replacement Therapy in Hypogonadal Men

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Androgen Replacement Therapy in Hypogonadal Men

Fig. 18.1 Who should be treated with androgen replacement therapy? Variations in sex hormone binding globulin (SHBG) gene polymorphisms and SHBG levels directly affect T levels (see Chap. 15). In genome-wide association…

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Environmental Causes of Testicular Dysfunction

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Environmental Causes of Testicular Dysfunction

Fig. 14.1 Main environmental and lifestyle factors affecting testicular development and/or function in adulthood Seasonal Effects on Testicular Function Though humans are considered to be non-seasonal mammals, we are undoubtedly sensitive…

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Stimulation of Spermatogenesis in Hypogonadotropic Men

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Stimulation of Spermatogenesis in Hypogonadotropic Men

Drug Trade name Application Dose Human chorionic gonadotropin (hCG) Brevactid®a Pregnylb Novarelb s.c. or i.m. 1000–2500 IU twice weekly (on Mondays and Fridays) Recombinant FSH (rFSH) Gonal F®a, Puregon®a Follistimb s.c….

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Male Hypogonadism Due to Cancer and Cancer Treatments

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Male Hypogonadism Due to Cancer and Cancer Treatments

Fig. 12.1 Effect of cytotoxic therapies on the hypothalamic–pituitary–testicular axis in children and adults. Differences in hormonal profile, cellular composition and cellular maturity can result in differential effects of cancer treatment…

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Normal and Delayed Puberty

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Normal and Delayed Puberty

Fig. 4.1 Tanner staging of puberty onset in boys from Palmer and Dunkel [4]. Copyright © (2012) Massachusetts Medical Society. Reprinted with permission Table 4.1 Details of the Tanner stages of puberty…

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Human Spermatogenesis and Its Regulation

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Human Spermatogenesis and Its Regulation

Fig. 3.1 Structure and cellular composition of the seminiferous epithelium in the human testis. The seminiferous epithelium, as seen in this schematic drawing of a cross section of a seminiferous tubule,…

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Male Hypogonadism Resulting from Mutations in the Genes for the Gonadotropin Subunits and Their Receptors

Sep 7, 2017 by in ENDOCRINOLOGY Comments Off on Male Hypogonadism Resulting from Mutations in the Genes for the Gonadotropin Subunits and Their Receptors

Fig. 6.1 Schematic presentation of sizes, locations of the carbohydrate side chains, and currently known mutations (red arrows) and functionally significant polymorphisms (green arrows) in the gonadotropin subunits, i.e., CGA, LHB,…

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