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Devender Bhalla, Elham Lotfalinezhad, Fatemah Amini, Mohsen Salmannejad, Vahid Reza Borhani Nezhad, Seyedeh Fatemeh Rezai Kooshalshah, Ahmed Delbari, Reza Fadayevatan, I Irmansyah, Abdalla Abdelrahman, Nanda Kumar Bhatta, Kurosh Gharagozli
BACKGROUND: The risk of dementia is reported as "epidemic" and "looming" over the Middle East and North Africa (MENA) region. For this, we performed a multi-language review and feasible analysis on the incidence of dementia to offer apt conclusions. METHODS: Totally, 3 databases (Magiran, Scientific Information Database, and PubMed) and 1 non-database source (Google) were searched in French, English, and Persian by using specific keywords and their combinations...
March 14, 2018: Neuroepidemiology
Samuel R Donnenfeld
The nineteenth century Mormon Prophet, Brigham Young, has long been lauded as progressive for sending dozens of Mormon women from the Utah territory to receive a formal medical education at The Women's Medical College of Pennsylvania. This manuscript comes to a contrary conclusion through close reading of diaries and journals created by these same women and the public speeches of the Prophet himself. These texts have historically been held up as evidence of Prophet Young's encouragement of women as physicians...
January 1, 2018: Journal of Medical Biography
Faustin Habyarimana, Temesgen Zewotir, Shaun Ramroop
The main objective of this study was to assess the risk factors and spatial correlates of domestic violence against women of reproductive age in Rwanda. A structured spatial approach was used to account for the nonlinear nature of some covariates and the spatial variability on domestic violence. The nonlinear effect was modeled through second-order random walk, and the structured spatial effect was modeled through Gaussian Markov Random Fields specified as an intrinsic conditional autoregressive model. The data from the Rwanda Demographic and Health Survey 2014/2015 were used as an application...
March 1, 2018: Journal of Interpersonal Violence
Pierre Saumitou-Laprade, Philippe Vernet, Arnaud Dowkiw, Sylvain Bertrand, Sylvain Billiard, BĂ©atrice Albert, Pierre-Henri Gouyon, Mathilde Dufay
How flowering plants have recurrently evolved from hermaphroditism to separate sexes (dioecy) is a central question in evolutionary biology. Here, we investigate whether diallelic self-incompatibility (DSI) is associated with sexual specialization in the polygamous common ash ( Fraxinus excelsior ), which would ultimately facilitate the evolution towards dioecy. Using interspecific crosses, we provide evidence of strong relationships between the DSI system and sexual phenotype. The reproductive system in F...
February 28, 2018: Proceedings. Biological Sciences
Kurt W Karageorge, Raymond R Wilson
Characterizing the mating systems of long-lived, economically important Pacific rockfishes comprising the viviparous Sebastes species flock is crucial for their conservation. However, direct assignment of mating success to sires is precluded by open, offshore populations and high female fecundity. We addressed this challenge by integrating paternity-assigned mating success of females with the adult sex ratio (ASR) of the population, male evolutionary responses to receptive females, and reproductive life history traits-in the framework of sexual selection theory-to assess the mating system of Sebastes melanops...
December 2017: Ecology and Evolution
ALJohara M Alquaiz, Maha Almuneef, Ambreen Kazi, Aljohara Almeneessier
Intimate partner violence is a worldwide public health problem. The objectives of this study were to measure the prevalence and types of domestic violence, and to explore the association between social determinants (sociodemographic factors, husband-related factors, and social support) and violence against women by their intimate partner (husband). We conducted a cross-sectional survey in 18 randomly selected primary health care centers and 13 private institutions (teaching institutes, government offices, social welfare organizations) in Riyadh, Saudi Arabia...
December 1, 2017: Journal of Interpersonal Violence
Kristina U Wensing, Mareike Koppik, Claudia Fricke
Competition between males creates potential for pre- and postcopulatory sexual selection and conflict. Theory predicts that males facing risk of sperm competition should evolve traits to secure their reproductive success. If those traits are costly to females, the evolution of such traits may also increase conflict between the sexes. Conversely, under the absence of sperm competition, one expectation is for selection on male competitive traits to relax thereby also relaxing sexual conflict. Experimental evolution studies are a powerful tool to test this expectation...
December 2017: Ecology and Evolution
Julie Colpitts, Darla Williscroft, Harmandeep Singh Sekhon, Howard D Rundle
There is a general expectation that sexual selection should align with natural selection to aid the purging of deleterious mutations, yet experiments comparing purging under monogamy versus polygamy have provided mixed results. Recent studies suggest that this may be because the simplified mating environments used in these studies reduce the benefit of sexual selection through males and hamper natural selection through females by increasing costs associated with sexual conflict. To test the effect of the physical mating environment on purging, we use experimental evolution in Drosophila melanogaster to track the frequency of four separate deleterious mutations in replicate populations that experience polygamy under either a simple or structurally complex mating arena while controlling for arena size...
October 2017: Biology Letters
Daisuke Kyogoku, Teiji Sota
Sexual selection sometimes favors male traits that benefit their bearers, but harm their mates. The harmful effects of male traits may also extend to females of other species via heterospecific mating interactions. This could affect the coexistence of closely related species during secondary contact. We examined the evolution of the interspecific interfering capability of a beetle (Callosobruchus chinensis) with a congener (C. maculatus) using C. chinensis males reared under conditions of monogamy and polygamy for 17 generations...
November 2017: Evolution; International Journal of Organic Evolution
Amardeep Singh, Aneil F Agrawal, Howard D Rundle
Sexual interactions among adults can generate selection on both males and females with genome-wide consequences. Sexual selection through males is one component of this selection that has been argued to play an important role in purging deleterious alleles. A common technique to assess the influence of sexual selection is by a comparison of experimental evolution under enforced monogamy versus polygamy. Mixed results from past studies may be due to the use of highly simplified laboratory conditions that alter the nature of sexual interactions...
November 2017: Evolution; International Journal of Organic Evolution
David E Ausband, Michael S Mitchell, Lisette P Waits
Breeder turnover can influence population growth in social carnivores through changes to group size, composition and recruitment. Studies that possess detailed group composition data that can provide insights about the effects of breeder turnover on groups have generally been conducted on species that are not subject to recurrent annual human harvest. We wanted to know how breeder turnover affects group composition and how harvest, in turn, affects breeder turnover in cooperatively breeding grey wolves (Canis lupus Linnaeus 1758)...
September 2017: Journal of Animal Ecology
Claude T Tagny, Georges Nguefack-Tsague, Diderot Fopa, Celestin Ashu, Estel Tante, Pauline Ngo Balogog, Olivier Donfack, Dora Mbanya, Syria Laperche, Edward Murphy
BACKGROUND: In sub-Saharan Africa improving the deferral of at-risk blood donors would be a cost-effective approach to reducing transfusion-transmitted human immunodeficiency virus (HIV) infections. We performed a pilot case-control study to identify the risk factors for HIV infection and to develop an adapted donor history questionnaire (DHQ) for sub-Saharan Africa. STUDY DESIGN AND METHODS: We recruited 137 HIV-positive donors (cases) and 256 HIV-negative donors (controls) and gathered risk factor data using audio computer-assisted self-interview...
August 2017: Transfusion
April L Yerges, Patricia E Stevens, Lucy Mkandawire-Valhmu, Wendy Bauer, Thokozani Ng'ombe Mwenyekonde, Lance S Weinhardt, Loren W Galvao
Polygamy in sub-Saharan Africa has been linked to poverty, infant mortality, and HIV; however, it is unknown how interpersonal dynamics within polygamous households may influence population health outcomes. Findings from this postcolonial feminist study derive from interview data in a larger mixed-methods study in rural Malawi. We used thematic narrative analysis to probe 25 women's stories and applied an arts-based research technique, poetic construction, to present the results. Participants' evocative expressions, distilled and preserved in poetic form, illustrate themes of perseverance, grief, agency, and reflection...
May 8, 2017: Health Care for Women International
Yu Luo, Fu-Gang Zhang, Yongming Li
We investigate the entanglement distribution in multi-particle systems in terms of unified (q, s)-entropy. We find that for any tripartite mixed state, the unified (q, s)-entropy entanglement of assistance follows a polygamy relation. This polygamy relation also holds in multi-particle systems. Furthermore, a generalized monogamy relation is provided for unified (q, s)-entropy entanglement in the multi-qubit system.
April 25, 2017: Scientific Reports
Oluyemi O Akanni, Olaide N Koleoso, Anthony A Olashore, Ehigiator O Adayonfo, Adeagbo F Osundina, Olaniyi O Ayilara
Risky behaviours in adolescents, apart from substance use, and their associate factors, have not been thoroughly investigated in Nigeria. Hence, there is a need to study the prevalence of risky behaviours and their relationship with gender and other potential risk factors. Data comprising socio-demographic, risky behaviours, personality traits, religious orientation and substance use were obtained from 300 randomly selected secondary school students. Two risk groups (low and high) based on the number of risky behaviours were determined...
June 2017: Journal of Adolescence
Amin Daoulah, Amir Lotfi, Mushabab Al-Murayeh, Salem Al-Kaabi, Salem M Al-Faifi, Osama E Elkhateeb, Mohamed N Alama, Ahmad S Hersi, Ciaran M Dixon, Waleed Ahmed, Mohamed Al-Shehri, Ali Youssef, Ahmed Moustafa Elimam, Ayman S Abougalambou, Waheed Murad, Alawi A Alsheikh-Ali
Epidemiologic evidence suggests a link between psychosocial risk factors such as marital status and coronary artery disease (CAD). Polygamy (multiple concurrent wives) is a distinct marital status practiced in many countries in Asia and the Middle East, but its association with CAD is not well defined. We conducted a multicenter, observational study of consecutive patients undergoing coronary angiography during the period from April 1, 2013, to March 30, 2014. Of 1,068 enrolled patients, 687 were married men...
2017: International Journal of Vascular Medicine
Matilda Brindle, Christopher Opie
The extreme morphological variability of the baculum across mammals is thought to be the result of sexual selection (particularly, high levels of postcopulatory selection). However, the evolutionary trajectory of the mammalian baculum is little studied and evidence for the adaptive function of the baculum has so far been elusive. Here, we use Markov chain Monte Carlo methods implemented in a Bayesian phylogenetic framework to reconstruct baculum evolution across the mammalian class and investigate the rate of baculum length evolution within the primate order...
December 14, 2016: Proceedings. Biological Sciences
Brian Hollis, Laurent Keller, Tadeusz J Kawecki
Explanations for the evolution of delayed maturity usually invoke trade-offs mediated by growth, but processes of reproductive maturation continue long after growth has ceased. Here, we tested whether sexual selection shapes the rate of posteclosion maturation in the fruit fly Drosophila melanogaster. We found that populations maintained for more than 100 generations under a short generation time and polygamous mating system evolved faster posteclosion maturation and faster egg-to-adult development of males, when compared to populations kept under short generations and randomized monogamy that eliminated sexual selection...
February 2017: Evolution; International Journal of Organic Evolution
John Kinuthia, Barbra A Richardson, Alison L Drake, Daniel Matemo, Jennifer A Unger, Raymond S McClelland, Grace John-Stewart
BACKGROUND: Understanding sexual behaviors and vaginal practices of pregnant and breastfeeding women in sub-Saharan Africa is critical to inform HIV prevention strategies during these periods. METHODS: HIV-uninfected women presenting for antenatal care in western Kenya were enrolled and followed through 36 weeks postpartum. Sexual behavior and vaginal practices were ascertained by structured questionnaires. Logistic regression was used to assess correlates of unprotected sex, vaginal washing, and vaginal drying...
February 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Sarah Nakubulwa, Dan K Kaye, Freddie Bwanga, Nazarius Mbona Tumwesigye, Edith Nakku-Joloba, Florence M Mirembe
INTRODUCTION: Herpes simplex virus type 2 (HSV-2) acquired during pregnancy is associated with adverse outcomes such as perinatal HSV-2 transmission. HSV-2 seroconversion occurs within four weeks of HSV-2 acquisition. There was neither documented incidence nor risk factors for HSV-2 seroconversion during pregnancy in Uganda. The objective of this study was to determine the incidence and risk factors for HSV-2 seroconversion among pregnant women in Mulago Hospital, Uganda. METHODOLOGY: A prospective study of 200 consenting HSV-2-negative women between 26 and 28 weeks of gestation was done between November 2013 and October 2014...
October 31, 2016: Journal of Infection in Developing Countries
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