نتایج جستجو برای: reproductive hormones
تعداد نتایج: 162520 فیلتر نتایج به سال:
background and aims: quantum dots (qds), as colloidal nanocrystalline semiconductors, present qd wavelengths in terms of biomedical assays and imaging, though the high toxicity of their core demands to be taken into consideration. investigating this subject is taken into account as an important concept concerning use of these nanoparticles in the medical applications. materials and methods: 1...
The male reproductive system (Figure 1) consists of a series of glandular, muscular, and ciliated tubes and diverticula dedicated to the production, storage, nourishment, and activation of spermatozoa, and to their transport into the female reproductive tract. There are three products of the system: the germ cells, the seminal fluid that bathes them when they are emitted, and hormones that regu...
Serum concentrations of p, p′-DDE, HCB, PCBs and reproductive hormones among men of reproductive age
Abstract Background Mass spectrometry allows for analysis of multiple hormone and organic acid metabolites from small urine volumes; however, to assess the full extent daily production, 24-h collections are usually required. The aims this study were, first, confirm that mass spectrometric an array hormones acids would yield similar results in both liquid dried urine, and, second, determine if c...
As the chronological age increases, there is a physiological decline in reproductive potential of women. Moreover, the chronological age of women may not reflect the biological age of her ovaries. Various endocrine markers have been used to assess the ovarian reserve. The changing pattern of the endocrine markers; follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2) and ...
Only 2-5% of seminal fluid is composed of spermatozoa, while the rest is seminal plasma. The seminal plasma is a rich cocktail of organic and inorganic compounds including hormones, serving as a source of nutrients for sperm development and maturation, protecting them from infection and enabling them to overcome the immunological and chemical environment of the female reproductive tract. In thi...
The organs of the adult reproductive system can undergo extensive remodelling, experiencing rapid changes in tissue mass and function. Much of this matrix remodelling is attributed to the action of matrix metalloproteinases. Matrix metalloproteinase family members are expressed in a highly-regulated manner in many reproductive processes, including menstruation, ovulation, implantation, and uter...
and BuChE inhibition. Significant increments were observed in sperm DFI with significant decreases in some semen parameters. DFI was negatively correlated with BuChE, sperm concentration, morphology and vitality in these workers. The levels of Tt, PRL, FT4 and TSH appeared to be normal; however, there was a tendency for increased LH and FSH levels in exposed workers. Conclusions: Our results co...
In “The Cutest Little Baby Face: A Hormonal Link to Sensitivity to Cuteness in Infant Faces,” Sprengelmeyer et al. (2009) reported results from three fascinating studies designed to test humans’ ability to discriminate among infants on the basis of cuteness. The first study indicated that women of reproductive age are superior to men and older women in this regard, and the second study revealed...
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