Browsing School of Natural Medicine by Author "Henkel, Ralf"
Now showing items 1-5 of 5
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Effect of the metabolic syndrome on male reproductive function: a case-controlled pilot study
Leisegang, Kristian; Bouic, Patrick J.D.; Henkel, Ralf (Wiley, 2014)The metabolic syndrome (MetS) is a constellation of various risk factors. This study aimed to investigate the effect of MetS on testosterone and progesterone, and semen parameters, in a case-controlled pilot study. Male ... -
The impact of male overweight on semen quality and outcome of assisted reproduction
Leisegang, Kristian; Henkel, Ralf (Medknow Publications, 2014)The impact of obesity on male reproductive health remains a contested topic as evidence is inconclusive and inconsistent. Even more debatable is the effect of male obesity in assisted reproduction. In the manuscript, ... -
The in vitro modulation of steroidogenesis by inflammatory cytokines and insulin in TM3 Leydig cells
Leisegang, Kristian; Henkel, Ralf (BioMed Central, 2018)BACKGROUND: Cytokines and hormones, including insulin, are known to modulate the hypothalamic-pituitary-testes axis and steroidogenesis, both centrally and peripherally. In the context of chronic inflammation and hyper ... -
Obesity is associated with increased seminal insulin and leptin alongside reduced fertility parameters in a controlled male cohort
Leisegang, Kristian; Menkveld, Roelof; Bouic, Patrick J.D.; Henkel, Ralf (BioMed Central, 2014)Obesity appears to be associated with male reproductive dysfunction and infertility, although this has been inconsistent and inconclusive. Insulin and leptin are known mediators and modulators of the hypothalamus-pituitary-testes ... -
Tongkat Ali as a Potential Herbal Supplement for Physically Active Male and Female Seniors—A Pilot Study
Henkel, Ralf; Wang, Ruxiang; Bassett, Susan; Chen, Tao; Liu, Na; Zhu, Ying; Tambi, Mohd (John Wiley & Sons Ltd, 2013)Tongkat Ali (Eurycoma longifolia; TA) is known to increase testosterone levels and alleviate aging males’ symptoms. This study aimed at investigating TA as an ergogenic supplement for elderly people. Thirteen physically ...