Objective: Plant–derived male antifertility agents need to address the basic requirements of fertility suppression without affecting libido. This study was undertaken to evaluate the male antifertility potential of the β-sitosterol (BS) which is an active component isolated from the methanolic root extract of Barleria prionitis in the male albino rats. Methods: β-sitosterol was extracted using ...

This paper reviews potential explanations of the continued fertility decline in developed countries that are provided by the economic theory of the family and discusses their implications regarding the appropriateness of public interventions. Theoretical approaches covered are the quantity–quality interaction in parental fertility decisions; time-allocation models with rising opportunity costs ...

BACKGROUND Awareness of infertility risk factors is an essential first step to safeguard future fertility. Whereas several studies have examined university students' awareness of female fertility and related risk factors, the topic of male infertility has not been well examined. The objective of this study was to assess young men and women's awareness, knowledge and perceptions of infertility, ...

Identification of desirable maintainers and potential restorers in a hybrid rice breeding program is the dire need for development hybrids. Seventeen (17) cytoplasmic male sterile (CMS) lines (15 imported from IRRI 02 locally developed by RRI, KSK) were crossed with one hundred sixty (160) testers to identify their genetic nature behave as restorer or maintainer year 2017 2018. A total test cro...

BACKGROUND HIV infection is linked to decreased fertility and fertility desires in sub-Saharan Africa due to biological and social factors. We investigate the relationship between HIV infection and fertility or fertility desires in the context of universal access to antiretroviral therapy introduced in 2004 in Rwanda. METHODS We used data from 3532 and 4527 women aged 20-49 from the 2005 and ...

background: growth factors play an essential role in the development of tumor and normal cells like testicular leydig cells. treatment of cancer with anti-cancer agents like imatinib mesylate may interfere with normal leydig cell activity, growth and fertility through failure in growth factors’ production or their signaling pathways. the purpose of the study was to determine cellular viability ...

The widespread use of ovulation-inducing drugs to enhance fertility has raised concerns about its potential effects on breast cancer risk, as ovarian stimulation is associated with increases in estrogen and progesterone levels. We investigated the short-term relation between fertility drug use and mammographic breast density, a strong marker of breast cancer risk, among participants in the Grou...

Poor spikelet fertility under low temperature (LT) stress during anthesis limits the possibility of high yield potential in indica-japonica hybrid rice, leading to reduced stability of grain yield. However, the cause for it is still unclear. In this study, three indica-japonica hybrid rice cultivars, Yongyou9, Yongyou17 (both cold sensitive), and Yongyou538, and one japonica inbred rice cultiva...

The decline of dairy cattle fertility worldwide remains a major concern, with conception rates to first service commonly below 40%. The length and severity of negative energy balance postpartum are unfavorably correlated with fertility, suggesting that the length and severity of negative energy balance and fertility are linked via several hormones or metabolites. These compounds therefore have ...

BACKGROUND Benzo(a)pyrene (BaP) is an endocrine toxicant that is widely distributed in the environment. The adverse effects of BaP on fertility are well documented, however its effects on fertility in the subsequent generations are not known. We aimed to investigate the transgenerational effects of BaP on male fertility in mice. METHODS Six-week-old male mice (F0) were orally administered BaP...