H
Hans M.W.M. Merkus
Researcher at Radboud University Nijmegen Medical Centre
Publications - 38
Citations - 2325
Hans M.W.M. Merkus is an academic researcher from Radboud University Nijmegen Medical Centre. The author has contributed to research in topics: Pregnancy & Population. The author has an hindex of 22, co-authored 38 publications receiving 2211 citations. Previous affiliations of Hans M.W.M. Merkus include VU University Medical Center & Radboud University Nijmegen.
Papers
More filters
Journal ArticleDOI
Effects of folic acid and zinc sulfate on male factor subfertility: a double-blind, randomized, placebo-controlled trial.
Wai Yee Wong,Hans M.W.M. Merkus,Chris M.G. Thomas,Roelof Menkveld,Gerhard A. Zielhuis,Régine P.M. Steegers-Theunissen +5 more
TL;DR: Total normal sperm count increases after combined zinc sulfate and folic acid treatment in both subfertile and fertile men, and this finding opens avenues of future fertility research and treatment and may affect public health.
Journal ArticleDOI
Semen parameters, including WHO and strict criteria morphology, in a fertile and subfertile population: an effort towards standardization of in-vivo thresholds
Roelof Menkveld,Wai Yee Wong,Carl Lombard,Alex M.M. Wetzels,Chris M.G. Thomas,Hans M.W.M. Merkus,Régine P.M. Steegers-Theunissen +6 more
TL;DR: The semen analysis results of a fertile population were compared with those from a subfertile population, in order to establish normal cut-off values for the standard semen parameters with the aid of receiver operating characteristic (ROC) curve analysis.
Journal ArticleDOI
The impact of calcium, magnesium, zinc, and copper in blood and seminal plasma on semen parameters in men
Wai Yee Wong,Gert Flik,Pascal M.W. Groenen,Dorine W. Swinkels,Chris M.G. Thomas,Jenny H.J. Copius-Peereboom,Hans M.W.M. Merkus,Régine P.M. Steegers-Theunissen +7 more
TL;DR: Although calcium, magnesium, zinc, and copper play an essential role in spermatogenesis and fertility, the determination of these elements in blood and seminal plasma does not discriminate on the basis of fertility in this group of men.
Journal ArticleDOI
Longitudinal vitamin and homocysteine levels in normal pregnancy.
Rolf J.L.M. Cikot,Régine P.M. Steegers-Theunissen,Chris M.G. Thomas,Theo de Boo,Hans M.W.M. Merkus,Eric A. P. Steegers +5 more
TL;DR: Evaluated vitamin and homocysteine concentrations in 102 nulliparous women with an uneventful singleton pregnancy and normal outcome not using supplements to contribute to better diagnosis of maternal deficiencies and to study further the relationship between maternal vitamin status and adverse course and outcome of pregnancy.
Journal ArticleDOI
Periconceptional folate intake by supplement and food reduces the risk of nonsyndromic cleft lip with or without cleft palate.
Iris A.L.M. van Rooij,Marga C. Ocké,Huub Straatman,Gerhard A. Zielhuis,Hans M.W.M. Merkus,Régine P.M. Steegers-Theunissen +5 more
TL;DR: It was demonstrated that periconceptional maternal folic acid supplement use was beneficial to reduce the risk for CLP and an additional effect of food folate was shown.