Urinary and seminal plasma concentrations of phthalate metabolites in relation to spermatogenesis-related miRNA106a among men from an infertility clinic

Chemosphere ◽  
2022 ◽  
Vol 288 ◽  
pp. 132464
Author(s):  
Fei-Peng Cui ◽  
Chong Liu ◽  
Yan-Ling Deng ◽  
Pan-Pan Chen ◽  
Yu Miao ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Plasma Concentrations ◽  
Phthalate Metabolites

Seasonal changes of steroid concentrations in seminal plasma of a European wild boar

1984 ◽  
Vol 107 (3) ◽  
pp. 425-427 ◽  
Author(s):  
D. Schopper ◽  
J. Gaus ◽  
R. Claus ◽  
H. Bader
Keyword(s):  
Wild Boar ◽  
Seminal Plasma ◽  
Seasonal Pattern ◽  
Plasma Concentrations ◽  
Boar Taint ◽  
Steroid Production ◽  
European Wild Boar ◽  
Clear Seasonal Pattern ◽  
Boar Semen ◽  
Low Levels

Abstract. The influence of season on testicular steroid production as a parameter of testicular function has been studied in a wild boar. Semen was collected once weekly while it served the dummy. In seminal plasma concentrations of the following steroids were determined by radioimmunoassay: unconjugated testosterone, conjugated testosterone, unconjugated total oestrogens, conjugated total oestrogens and 5α-androst-16-en-3-one ('boar-taint steroid'). All steroids showed a clear seasonal pattern with highest concentrations in autumn and early winter and low levels from January to July. Maxima during the rutting season were 10–25 times greater than average values out of season. During a 2-month-period (mid-July until mid-September) libido was abolished and the wild boar refused to mount the dummy. These results indicate that the seasonal variation in testicular steroid production by the wild boar, regulated by photoperiod, are similar to those of the domestic boar.

EFFECTS OF PARSLEY SEEDS AT DIFFERENT LEVELS AS NATURAL ADDITIVES ON SEMEN QUALITY IN RABBIT MALES

2018 ◽  
Vol 1 (1) ◽  
pp. 81-92
Author(s):  
Jamal A. Embark
Keyword(s):  
Seminal Plasma ◽  
Semen Quality ◽  
Control Diet ◽  
Plasma Concentrations ◽  
Sperm Concentration ◽  
Reproductive Traits ◽  
Quality Parameters ◽  
Control Group ◽  
Semen Collection ◽  
Different Levels

This study is designed to evaluate the effect of using parsley seeds (PAS) at different levels as a natural on semen quality and reduce the effect of lipidperoxidation of bucks. Forty New Zealand rabbit bucks 8 month old were divided into four groups (each 10 rabbit bucks). The groups were divided as follows: Control diet (free from PAS), T1: Control diet + 5g/kg PAS, T2: Control diet + 10g/kg PAS; T3: Control diet + 15g/kg PAS. Semen sample were collected twice a week; from each rabbit buck by artificial vagina. The first semen collection was used to evaluate semen quality parameters. However, the second semen collection was used for analysis semen plasma. Results revealed that feeding diets containing different levels of PAS significantly (P<0.05) increased semen volume, mass activity, individual motility, PSV, sperm concentration, total sperm and seminal plasma activity of ALP enzyme and significant (P<0.05) decrease in dead sperm and seminal plasma concentrations of total lipids, triglycerides, cholesterol and MDA and seminal plasma activities of AST and ALT enzymes and TAC as compared with the control group. In conclusion, dietary supplementation with different levels of PAS, especially at the level of 15 g/kg (T3) resulted in significant improvement in semen quality, antioxidant status and reproductive traits of rabbit bucks.

Serine protease inhibitors (serpins) in human seminal plasma: Concentrations and inhibition of acrosin

1994 ◽  
Vol 8 (6) ◽  
pp. 364-371 ◽  
Author(s):  
X.L. Zheng ◽  
M. Geiger ◽  
S. Ecke ◽  
I. Resch ◽  
U. Eberspächer ◽  
...  
Keyword(s):  
Serine Protease ◽  
Protease Inhibitors ◽  
Seminal Plasma ◽  
Plasma Concentrations ◽  
Serine Protease Inhibitors ◽  
Human Seminal Plasma

scholarly journals Seminal plasma metabolome in relation to semen quality and urinary phthalate metabolites among Chinese adult men

2019 ◽  
Vol 129 ◽  
pp. 354-363 ◽  
Author(s):  
Yi-Xin Wang ◽  
Yan Wu ◽  
Heng-Gui Chen ◽  
Peng Duan ◽  
Liang Wang ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Semen Quality ◽  
Phthalate Metabolites ◽  
Adult Men ◽  
Chinese Adult ◽  
Plasma Metabolome

Blood and seminal plasma concentrations of selenium, zinc and testosterone and their relationship to sperm quality and testicular biometry in domestic cats

2014 ◽  
Vol 150 (1-2) ◽  
pp. 50-55 ◽  
Author(s):  
Ana Izabel S.B. Villaverde ◽  
Eduardo G. Fioratti ◽  
Renata S. Ramos ◽  
Renato C.F. Neves ◽  
João Carlos P. Ferreira ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Sperm Quality ◽  
Plasma Concentrations ◽  
Domestic Cats

Variations Across the Menstrual Cycle in EEG Activity During Thinking and Mental Relaxation

1999 ◽  
Vol 13 (3) ◽  
pp. 163-172 ◽  
Author(s):  
R. Krug ◽  
M. Mölle ◽  
H.L. Fehm ◽  
J. Born
Keyword(s):  
Menstrual Cycle ◽  
Divergent Thinking ◽  
Spectral Power ◽  
Plasma Concentrations ◽  
Task Demands ◽  
Menstrual Phase ◽  
Convergent Thinking ◽  
Eeg Activity ◽  
Dimensional Complexity ◽  
Mental Relaxation

Abstract Previous studies have indicated: (1) peak performance on tests of divergent creative thinking during the ovulatory phase of the menstrual cycle; (2) compared to convergent analytical thinking, divergent thinking was found to be associated with a distinctly increased dimensional complexity of ongoing EEG activity. Based on these findings, we hypothesized that cortical information processing during the ovulatory phase is characterized by an increased EEG dimensionality. Each of 16 women was tested on 3 occasions: during the ovulatory phase, the luteal phase, and menses. Presence of the phases was confirmed by determination of plasma concentrations of estradiol, progesterone, and luteinizing hormone. The EEG was recorded while the women performed: (1) tasks of divergent thinking; (2) tasks of convergent thinking; and (3) during mental relaxation. In addition to EEG dimensional complexity, conventional spectral power analysis was performed. Behavioral data confirmed enhanced creative performance during the ovulatory phase while convergent thinking did not vary across cycle phases. EEG complexity was higher during divergent than convergent thought, but this difference remained unaffected by the menstrual phase. Influences of the menstrual phase on EEG activity were most obvious during mental relaxation. In this condition, women during the ovulatory phase displayed highest EEG dimensionality as compared with the other cycle phases, with this effect being most prominent over the central and parietal cortex. Concurrently, power within the alpha frequency band as well as theta power at frontal and parietal leads were lower during the luteal than ovulatory phase. EEG results indicate that task demands of thinking overrode effects of menstrual cycle. However, with a less demanding situation, an ovulatory increase in EEG dimensionality became prominent suggesting a loosening of associative habits during this phase.

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