[New methods for predicting sperm fertilizing ability].

There is no reliable method for screening for the fertilizing ability of sperm. 3 new methods are presented: the freezing test (FT), hypoosmotic swelling test (HOST) and migration-sedimentation test (MST). The first 2, test the functional integrity and stability of the sperm membrane under certain osmotic conditions.

A simple spot test for the detection of fructose deficiency in semen.

The concentration of fructose in seminal plasma is an important variable that should be measured in the assessment of fertility status. The current method requires the boiling of diluted seminal plasma with resorcinol. The present study offers a new two-point spot test which uses the metol method.

A direct effect of alpha-chlorohydrin on rat epididymal spermatozoa.

The effect of alpha-chlorohydrin (alpha-CH) on rat epididymal spermatozoa was studied in vivo and in vitro. Alpha-CH was injected sc in doses of 5 and 20 mg daily for 16 days. The 20 mg dose resulted in diminished epididymal spermatozoal content (8 +/- 4 vs.