sperm agglutination

sperm agglutination

The clumping of spermatozoa (sperm cells) to each other due to antigen antibody reactions or infection. The degree of clumping is evaluated in semen analysis. Increased clumping is associated with decreased fertility.
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Site-specific sperm agglutination and the timed release of a sperm chemoattractant by the egg of the leptomedusan, Orthopyxis caliculata.
The Global Male Infertility market can be divided into seven segments: DNA Fragmentation Technique, Oxidative Stress Analysis, Microscopic Examination, Sperm Penetration Assay, Sperm Agglutination, CASA, and Others.
Antisperm antibodies were detected in 62.2% of infertile women using indirect sperm agglutination test between sera and cervicovaginal secretions of these women where 42.8% of the cases had head-to-head agglutination (Table 1).
Ap and N-9 contains certain sperm agglutination factors which agglutinates rat spermatozoa.
It neutralizes hydroxyl, superoxide, and hydrogen peroxide radicals and prevents sperm agglutination (8).
The authors - from Rawalpindi General Hospital and two top research institutes - wrote that sperm agglutination or sticking together is a known limiting factor in male fertility and is also a problem for the body's immune system.
These include tray slide sperm agglutination, mixed agglutination reaction, sperm immobilization, sperm cytotoxicity, ELISA, indirect immunofluorescence, radiolabeled antiglobulin, immunobead binding, and flow cytometric sperm antibody.[1,11,12]
In ascidians, species-specific sperm agglutination was reported in the early 1950s using five Mediterranean ascidians (Minganti, 1951), and precise species-specific tests of sperm attractants in egg ethanol extracts were described (Miller, 1975, 1982) (Table 1).
Antisperm antibodies can cause sperm agglutination, which results in poor motlity and progression.
Site-specific sperm agglutination and the timed release of a sperm chemo-attractant by the egg of the leptomedusan, Orthopyxis caliculara.
However, sperms of fish caught from the polluted sites showed variable deformations including: changes in head morphology, incomplete chromatin condensation, malformed middle piece, altered axonemal structure, wavy and sometimes ruptured plasma membrane, head-to-head and head-to-tail sperm agglutinations. It is believed that the observed alterations in sperms may result from metal accumulation leading to reproductive impairment.
Sperm agglutinations were occasionally observed (fig.5c).