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Titolo:
Variation in semen parameters derived from computer-aided semen analysis, within donors and between donors
Autore:
Wijchman, JG; De Wolf, BTHM; Graaff, R; Arts, EGJM;
Indirizzi:
Univ Groningen Hosp, Dept Obstet & Gynaecol, Sect Reprod Med, NL-9700 RB Groningen, Netherlands Univ Groningen Hosp Groningen Netherlands NL-9700 RB ningen, Netherlands Univ Groningen, Dept Biomed Engn, NL-9700 RB Groningen, Netherlands Univ Groningen Groningen Netherlands NL-9700 RB B Groningen, Netherlands
Titolo Testata:
JOURNAL OF ANDROLOGY
fascicolo: 5, volume: 22, anno: 2001,
pagine: 773 - 780
SICI:
0196-3635(200109/10)22:5<773:VISPDF>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASSISTED SPERM ANALYSIS; DIGITAL IMAGE-ANALYSIS; MOTILITY CHARACTERISTICS; PREDICTIVE VALUE; TAIL DETECTION; NORMAL MEN; QUALITY; SPERMATOZOA; EJACULATION; ABSTINENCE;
Keywords:
concentration; longitudinal study; motility; statistical analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Wijchman, JG Univ Groningen Hosp, Dept Obstet & Gynaecol, Sect Reprod Med,Hanzepl 1,POB 30-001, NL-9700 RB Groningen, Netherlands Univ Groningen Hosp Hanzepl 1,POB 30-001 Groningen Netherlands NL-9700 RB
Citazione:
J.G. Wijchman et al., "Variation in semen parameters derived from computer-aided semen analysis, within donors and between donors", J ANDROLOGY, 22(5), 2001, pp. 773-780

Abstract

The development of computer-aided semen analysis (CASA) has made it possible to study sperm motility characteristics objectively and longitudinally. In this 2-year study of 8 sperm donors, we used CASA to measure 7 semen parameters (concentration, percentage of motile spermatozoa, curvilinear velocity, average path velocity, straight-line velocity, amplitude of lateral head displacement, and beat/cross frequency). The frequency distributions of the 7 parameters in the semen samples of each donor were investigated. All parameters but one were normally distributed; concentration was distributedlog-normally. Variation within individual donors and between donors was studied. Analysis of variance demonstrated that variation between donors was not explained by the longitudinal variation within individual donors. Variations in motility characteristics between donors were substantial, which may make motility characteristics of limited value as a tool for establishingfertility. Strong correlations were found between the 7 parameters, partlybecause by definition, motility characteristics are interdependent. Fisher's discriminant analysis demonstrated that each donor appeared to have his own set of semen characteristics and, more specifically, his own motility signature. From this data set it can be predicted that in order to find population means among sperm, it may be more efficient to measure more subjectsthan to increase the number of samples per subject.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 12:46:59