keyword
MENU ▼
Read by QxMD icon Read
search

Sexual differentiation

keyword
https://www.readbyqxmd.com/read/28421107/sexual-dimorphism-of-mirnas-secreted-by-bovine-in-vitro-produced-embryos
#1
Nicole Gross, Jenna Kropp, Hasan Khatib
Sexual dimorphism of bovine blastocysts has previously been observed through differences in development, cell death, metabolism, telomere length, DNA methylation, and transcriptomics. However, dimorphism in the secretion of miRNAs to culture media has not yet been evaluated. The objectives of this study were to determine if sex-specific blastocyst miRNA secretion occurs and to further investigate the role these miRNAs may have in the interaction between a blastocyst and the maternal environment. In vitro embryo culture was performed and media from male and female blastocysts was collected into sex-specific pools...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28419902/evaluating-the-efficacy-of-dna-differential-extraction-methods-for-sexual-assault-evidence
#2
Sonja B Klein, Martin R Buoncristiani
Analysis of sexual assault evidence, often a mixture of spermatozoa and victim epithelial cells, represents a significant portion of a forensic DNA laboratory's case load. Successful genotyping of sperm DNA from these mixed cell samples, particularly with low amounts of sperm, depends on maximizing sperm DNA recovery and minimizing non-sperm DNA carryover. For evaluating the efficacy of the differential extraction, we present a method which uses a Separation Potential Ratio (SPRED) to consider both sperm DNA recovery and non-sperm DNA removal as variables for determining separation efficiency...
March 31, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28417958/widespread-patterns-of-sexually-dimorphic-gene-expression-in-an-avian-hypothalamic-pituitary-gonadal-hpg-axis
#3
Matthew D MacManes, Suzanne H Austin, Andrew S Lang, April Booth, Victoria Farrar, Rebecca M Calisi
The hypothalamic-pituitary-gonadal (HPG) axis is a key biological system required for reproduction and associated sexual behaviors to occur. In the avian reproductive model of the rock dove (Columba livia), we characterized the transcript community of each tissue of the HPG axis in both sexes, thereby significantly expanding our mechanistic insight into HPG activity. We report greater sex-biased differential expression in the pituitary as compared to the hypothalamus, with multiple genes more highly expressed in the male pituitary being related to secretory function, and multiple genes more highly expressed in the female pituitary being related to reproduction, growth, and development...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28416533/capturing-in-vivo-rna-transcriptional-dynamics-from-the-malaria-parasite-plasmodium-falciparum
#4
Heather J Painter, Manuela Carrasquilla, Manuel Llinás
To capture the transcriptional dynamics within proliferating cells, methods to differentiate nascent transcription from pre-existing mRNAs are desired. One approach is to label newly synthesized mRNA transcripts in vivo through the incorporation of modified pyrimidines. However, the human malaria parasite, Plasmodium falciparum, is incapable of pyrimidine salvage for mRNA biogenesis. To capture cellular mRNA dynamics during Plasmodium development, we engineered parasites that can salvage pyrimidines through the expression of a single bifunctional yeast fusion gene, cytosine deaminase/uracil phosphoribosyltransferase (FCU)...
April 17, 2017: Genome Research
https://www.readbyqxmd.com/read/28416458/on-the-origins-of-sex-based-differences-in-respiratory-disorders-lessons-and-hypotheses-from-stress-neuroendocrinology-in-developing-rats
#5
REVIEW
Jean-Philippe Rousseau, Luana Tenorio-Lopes, Cécile Baldy, Tara Adele Janes, Stéphanie Fournier, Richard Kinkead
The environment plays a critical role in shaping development and function of the brain. Stress, especially when experienced early in life, can interfere with these processes. In the context of respiratory control, perinatal stress can therefore alter the ability to achieve the "fine-tuning" necessary for proper detection of chemosensory stimuli and production of an adequate motor (respiratory) command. Depending on the timing, intensity, and duration, the detrimental consequences of perinatal exposure to adverse conditions on the respiratory network become manifest at various life stages and can persist into adulthood...
April 14, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28414664/gonococcal-endocarditis-the-gift-that-stops-giving-an-uncommon-presentation-of-a-common-disease
#6
G Olayemi, M Oferczak, A Elagizi, I El-Abbassi, M Eschete, J Crowe
INTRODUCTION: Gonorrhea is the 2nd most common sexually transmitted disease in the US with 800,000 cases of gonorrhea each year. Disseminated gonorrhea infection occurs in 0.5 percent - 3 percent of these patients and is more frequent in woman younger than 40 years of age. CASE: A 36 year old woman with a history of polysubstance abuse presented with 10 day history of feeling generally unwell. At presentation, vitals were remarkable for tachycardia and hypotension...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28414611/population-genetic-structure-of-venturia-effusa-cause-of-pecan-scab-in-the-southeastern-united-states
#7
Clive H Bock, Michael W Hotchkiss, Carolyn A Young, Nikki D Charlton, Mattupalli Chakradhar, Katherine L Stevenson, Bruce W Wood
Venturia effusa is the most important pathogen of pecan in the southeastern United States. Little information exists on the population biology and genetic diversity of the pathogen. A hierarchical sampling of 784 isolates from 63 trees in 11 pecan orchards in the southeastern United States were screened against a set of 30 previously characterized microsatellite markers. Populations were collected from Georgia (n = 2), Florida (n = 1), Alabama (n = 2), Mississippi (n = 1), Louisiana (n = 1), Illinois (n = 1), Oklahoma (n = 1), Texas (n = 1), and Kansas (n = 1)...
May 2017: Phytopathology
https://www.readbyqxmd.com/read/28413602/do-sex-differences-in-ceoaes-and-2d-4d-ratios-reflect-androgen-exposure-a-study-in-women-with-complete-androgen-insensitivity-syndrome
#8
Judy van Hemmen, Peggy T Cohen-Kettenis, Thomas D Steensma, Dick J Veltman, Julie Bakker
BACKGROUND: Studies investigating the influence of perinatal hormone exposure on sexually differentiated traits would greatly benefit from biomarkers of these early hormone actions. Click-evoked otoacoustic emissions show sex differences that are thought to reflect differences in early androgen exposure. Women with complete androgen insensitivity syndrome (CAIS), who lack androgen action in the presence of XY-chromosomes, enabled us to study the effect of complete androgen inaction. The main goal was to investigate a possible link between click-evoked otoacoustic emissions and effective androgen exposure and, thus, whether this can be used as a biomarker...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28412334/ovotestis-in-adolescence-two-case-reports
#9
Jyoti D Chouhan, David I Chu, Antoinette Birs, Louise C Pyle, Jason P Van Batavia, Rebecca L Linn, Susan J Back, Pierre Russo, Kassa Darge, Thomas F Kolon, Arun K Srinivasan
We present two patients found to have ovotesticular disorder of sexual differentiation (otDSD) in late adolescence. Two 15-year-old phenotypically male patients presented to a large pediatric hospital with different complaints: one with concern for testicular rupture after a straddle injury; the other with gynecomastia. Further work-up, including imaging and lab tests, was performed before surgical exploration. The first patient had unilateral ovotestis, contralateral testis, and SRY-negative 46,XX karyotype...
April 13, 2017: Urology
https://www.readbyqxmd.com/read/28411066/the-actual-and-ideal-sexual-self-concept-in-the-context-of-genital-pain-using-implicit-and-explicit-measures
#10
Marieke Dewitte, Maarten De Schryver, Niclas Heider, Jan De Houwer
BACKGROUND: The experience of pain during sexual intercourse generates significant distress and sexual impairments, which is likely to affect sexual identity and become a threat to the sense of self. AIM: To explore the role of the concept of the sexual self in the context of genital pain by measuring different states of self (ie, actual vs ideal) at different levels of responding (ie, explicit vs implicit) and examine their associations with sexual, emotional, and pain-related variables...
April 11, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28410430/caste-sex-and-age-dependent-expression-of-immune-related-genes-in-a-japanese-subterranean-termite-reticulitermes-speratus
#11
Yuki Mitaka, Kazuya Kobayashi, Kenji Matsuura
Insects protect themselves from microbial infections through innate immune responses, including pathogen recognition, phagocytosis, the activation of proteolytic cascades, and the synthesis of antimicrobial peptides. Termites, eusocial insects inhabiting microbe-rich wood, live in closely-related family groups that are susceptible to shared pathogen infections. To resist pathogenic infection, termite families have evolved diverse immune adaptations at both individual and societal levels, and a strategy of trade-offs between reproduction and immunity has been suggested...
2017: PloS One
https://www.readbyqxmd.com/read/28406929/hiv-aids-knowledge-attitudes-and-behaviour-of-persons-with-and-without-disabilities-from-the-uganda-demographic-and-health-survey-2011-differential-access-to-hiv-aids-information-and-services
#12
Julie Abimanyi-Ochom, Hasheem Mannan, Nora Ellen Groce, Joanne McVeigh
Uganda is among the first to use the Washington Group Short Set of Questions on Disability to identify persons with disabilities in its Demographic and Health Survey. In this paper, we review the HIV Knowledge, Attitudes and Behaviour component of the 2011 Ugandan Demographic and Health Survey, analysing a series of questions comparing those with and without disabilities in relation to HIV/AIDS knowledge, attitudes and practices. We found comparable levels of knowledge on HIV/AIDS for those with and those without disabilities in relation to HIV transmission during delivery (93...
2017: PloS One
https://www.readbyqxmd.com/read/28406912/the-elusive-maestro-gene-its-human-reproductive-tissue-specific-expression-pattern
#13
Shlomit Kenigsberg, Patricia D A Lima, Leila Maghen, Brandon A Wyse, Chantal Lackan, Annie N Y Cheung, Benjamin K Tsang, Clifford L Librach
The encoded transcript of the Maestro-Male-specific Transcription in the developing Reproductive Organs (MRO) gene exhibits sexual dimorphic expression during murine gonadal development. The gene has no homology to any known gene and its expression pattern, protein function or structure are still unknown. Previously, studying gene expression in human ovarian cumulus cells, we found increased expression of MRO in lean-type Polycystic Ovarian Syndrome (PCOS) subjects, as compared to controls. In this study, we examined the MRO splice variants and protein expression pattern in various human tissues and cells...
2017: PloS One
https://www.readbyqxmd.com/read/28406033/the-impact-of-hiv-antiretroviral-treatment-perception-on-risky-sexual-behaviour-in-botswana-a-short-report
#14
Gobopamang Letamo, Mpho Keetile, Kannan Navaneetham
The aim of this article is to investigate the impact of ART perception on risky sexual behaviours in Botswana. Using binary logistic regression analysis controlling for individual characteristics, the results tend to support the hypothesis that ART misconceptions do not necessarily increase risky sexual behaviours. In particular, the study findings suggest the belief that ARVs cure HIV and AIDS and that people on ARVs should not always use condoms do not necessarily lead to increased risky sexual behaviours, particularly among women...
April 13, 2017: AIDS Care
https://www.readbyqxmd.com/read/28401580/military-sexual-trauma-is-associated-with-post-deployment-eating-disorders-among-afghanistan-and-iraq-veterans
#15
Rebecca K Blais, Emily Brignone, Shira Maguen, Marjorie E Carter, Jamison D Fargo, Adi V Gundlapalli
OBJECTIVE: Evaluate the association of military sexual trauma (MST) screen status with eating disorder diagnoses among veterans within 1- and 5-years after initiating Veterans Health Administration (VHA) care, and whether the association varied by sex. METHOD: Retrospective cohort study of US Afghanistan/Iraq veterans who used VHA services between FY 2004 and 2014 (N = 595,525). This study used VHA administrative data to assess the presence of eating disorder diagnoses in medical records within 1- and 5-years of initiating VHA care, and whether a positive screen for MST was associated with eating disorders...
April 12, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/28400434/prostate-organogenesis-tissue-induction-hormonal-regulation-and-cell-type-specification
#16
REVIEW
Roxanne Toivanen, Michael M Shen
Prostate organogenesis is a complex process that is primarily mediated by the presence of androgens and subsequent mesenchyme-epithelial interactions. The investigation of prostate development is partly driven by its potential relevance to prostate cancer, in particular the apparent re-awakening of key developmental programs that occur during tumorigenesis. However, our current knowledge of the mechanisms that drive prostate organogenesis is far from complete. Here, we provide a comprehensive overview of prostate development, focusing on recent findings regarding sexual dimorphism, bud induction, branching morphogenesis and cellular differentiation...
April 15, 2017: Development
https://www.readbyqxmd.com/read/28399454/detection-of-a-synthetic-sex-steroid-in-the-american-crocodile-crocodylus-acutus-evidence-for-a-novel-environmental-androgen
#17
Christopher M Murray, Mark Merchant, Michael Easter, Sergio Padilla, Davinia B Garrigós, Mahmood Sasa Marin, Craig Guyer
Endocrine-disrupting contaminants (EDC's) are well known to alter sexual differentiation among vertebrates via estrogenic effects during development, particularly in organisms characterized by temperature-dependent sex determination. However, substances producing androgenic effects typically lack potency when tested in laboratory settings and are virtually unstudied in field settings. Here, we assay levels of a synthetic androgen, 17α-methyltestosterone (MT), in a heavily male-biased population of American crocodiles in the Tempisque River Basin of Costa Rica based on the recent hypothesis that this chemical is an EDC in developing crocodilian embryos...
April 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28397607/sex-reversal-and-analyses-of-possible-involvement-of-sex-steroids-in-scallop-gonadal-development-in-newly-established-organ-culture-systems
#18
Ayano Otani, Tadaaki Nakajima, Tomomi Okumura, Shiro Fujii, Yasuhiro Tomooka
Many molluscs perform sex reversal, and sex hormones may be involved in the process. In adult scallops, Patinopecten yessoensis, gonadotropin releasing hormone and 17β-estradiol (E2) are involved in male sexual maturation, however, little is known about the effects of E2 and testosterone (T) on the gonadal differentiation in young scallops. In the present study, scallop gonadal development was analyzed to determine the sex reversal stage in Funka bay, and effects of E2 and T were examined. In Funka bay, almost all scallops were male at month 12...
April 2017: Zoological Science
https://www.readbyqxmd.com/read/28397543/trends-in-the-age-at-reproductive-transitions-in-the-developing-world-the-role-of-education
#19
John Bongaarts, Barbara S Mensch, Ann K Blanc
Girls' school participation has expanded considerably in the developing world over the last few decades, a phenomenon expected to have substantial consequences for reproductive behaviour. Using Demographic and Health Survey data from 43 countries, this paper examines trends and differentials in the mean ages at three critical life-cycle events for young women: first sexual intercourse, first marriage, and first birth. We measure the extent to which trends in the timing of these events are driven either by the changing educational composition of populations or by changes in behaviour within education groups...
April 11, 2017: Population Studies
https://www.readbyqxmd.com/read/28396969/psychological-and-behavioral-moderators-of-the-relationship-between-trauma-severity-and-hiv-transmission-risk-behavior-among-msm-with-a-history-of-childhood-sexual-abuse
#20
Abigail W Batchelder, Peter P Ehlinger, Michael S Boroughs, Jillian C Shipherd, Steven A Safren, Gail H Ironson, Conall O'Cleirigh
Childhood sexual abuse (CSA) is associated with post-traumatic stress disorder (PTSD), which can be associated with condomless sex among men who have sex with men (MSM). However, the impact of moderating factors on the relationship between PTSD symptom severity and condomless sex is poorly understood. We examined whether PTSD symptom severity was associated with condomless sex among MSM with CSA histories, and whether substance dependence, self-esteem, and distress tolerance moderated that relationship (n = 288)...
April 10, 2017: Journal of Behavioral Medicine
keyword
keyword
33511
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"