An artificially synthesised substance X when injected into an adult male suffering from failure in the normal functioning of testes, caused an initial stimulation of pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion. Substance X is most likely to be an analogue of

GnRH

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Citric acid

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Seminalplasmin

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Andogen binding protein

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Solution

The correct option is A GnRH
Gonadotropin-releasing hormone (GnRH) is the hormone that is released from the cells of the hypothalamus that stimulates the pituitary gland to produce the gonadotropins - Follicle-stimulating hormone (FSH) and Luteinizing hormone (LH). Chronic administration of the GnRH analogues can result in an initial stimulation of pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion, which may later decrease.

Androgen binding protein is a glycoprotein produced by the Sertoli cells. This protein helps to concentrate testosterone within the testes.

Seminalplasmin in prostatic ﬂuid can act as an antibiotic that can destroy bacteria.

Citric acid is a part of the prostatic fluid. Citric acid can be considered as a sperm nutrient in low concentrations.

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