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Biology of Sex Differences

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https://www.readbyqxmd.com/read/29739446/sex-specific-microrna-expression-networks-in-an-acute-mouse-model-of-ozone-induced-lung-inflammation
#1
Nathalie Fuentes, Arpan Roy, Vikas Mishra, Noe Cabello, Patricia Silveyra
BACKGROUND: Sex differences in the incidence and prognosis of respiratory diseases have been reported. Studies have shown that women are at increased risk of adverse health outcomes from air pollution than men, but sex-specific immune gene expression patterns and regulatory networks have not been well studied in the lung. MicroRNAs (miRNAs) are environmentally sensitive posttranscriptional regulators of gene expression that may mediate the damaging effects of inhaled pollutants in the lung, by altering the expression of innate immunity molecules...
May 8, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29673397/sex-differences-in-kinematic-adaptations-to-muscle-fatigue-induced-by-repetitive-upper-limb-movements
#2
Jason Bouffard, Chen Yang, Mickael Begon, Julie Côté
BACKGROUND: Muscle fatigue induced by repetitive movements contributes to the development of musculoskeletal disorders. Men and women respond differently to muscle fatigue during isometric single-joint efforts, but sex differences during dynamic multi-joint tasks have not been clearly identified. Moreover, most studies comparing men and women during fatigue development assessed endurance time. However, none evaluated sex differences in kinematic adaptations to fatigue during multi-joint dynamic tasks...
April 19, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29669590/sex-differences-in-umbilical-artery-doppler-indices-a-longitudinal-study
#3
Christian Widnes, Kari Flo, Tom Wilsgaard, Torvid Kiserud, Ganesh Acharya
BACKGROUND: Sexual dimorphism in placental size and function has been described. Whether this influences the clinically important umbilical artery (UA) waveform remains controversial, although a few cross-sectional studies have shown sex differences in UA pulsatility index (PI). Therefore, we tested whether fetal sex influences the UA Doppler indices during the entire second half of pregnancy and aimed to establish sex-specific reference ranges for UA Doppler indices if needed. METHODS: Our main objective was to investigate gestational age-associated changes in UA Doppler indices during the second half of pregnancy and compare the values between male and female fetuses...
April 18, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29669571/sex-differences-in-pulmonary-arterial-hypertension-role-of-infection-and-autoimmunity-in-the-pathogenesis-of-disease
#4
REVIEW
Kyle A Batton, Christopher O Austin, Katelyn A Bruno, Charles D Burger, Brian P Shapiro, DeLisa Fairweather
Registry data worldwide indicate an overall female predominance for pulmonary arterial hypertension (PAH) of 2-4 over men. Genetic predisposition accounts for only 1-5% of PAH cases, while autoimmune diseases and infections are closely linked to PAH. Idiopathic PAH may include patients with undiagnosed autoimmune diseases based on the relatively high presence of autoantibodies in this group. The two largest PAH registries to date report a sex ratio for autoimmune connective tissue disease-associated PAH of 9:1 female to male, highlighting the need for future studies to analyze subgroup data according to sex...
April 18, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29625592/orphan-receptor-gpr37l1-contributes-to-the-sexual-dimorphism-of-central-cardiovascular-control
#5
James L J Coleman, Margaret A Mouat, Jianxin Wu, Nikola Jancovski, Jaspreet K Bassi, Andrea Y Chan, David T Humphreys, Nadine Mrad, Ze-Yan Yu, Tony Ngo, Siiri Iismaa, Cristobal G Dos Remedios, Michael P Feneley, Andrew M Allen, Robert M Graham, Nicola J Smith
BACKGROUND: Over 100 mammalian G protein-coupled receptors are yet to be matched with endogenous ligands; these so-called orphans are prospective drug targets for the treatment of disease. GPR37L1 is one such orphan, abundant in the brain and detectable as mRNA in the heart and kidney. GPR37L1 ablation was reported to cause hypertension and left ventricular hypertrophy, and thus, we sought to further define the role of GPR37L1 in blood pressure homeostasis. METHODS: We investigated the cardiovascular effects of GPR37L1 using wild-type (GPR37L1wt/wt ) and null (GPR37L1KO/KO ) mice established on a C57BL/6J background, both under baseline conditions and during AngII infusion...
April 6, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29609661/all-male-hybrids-of-a-tetrapod-pelophylax-esculentus-share-its-origin-and-genetics-of-maintenance
#6
Marie Doležálková-Kaštánková, Nicolas B M Pruvost, Jörg Plötner, Heinz-Ulrich Reyer, Karel Janko, Lukáš Choleva
BACKGROUND: Sexual parasites offer unique insights into the reproduction of unisexual and sexual populations. Because unisexuality is almost exclusively linked to the female sex, most studies addressed host-parasite dynamics in populations where sperm-dependent females dominate. Pelophylax water frogs from Central Europe include hybrids of both sexes, collectively named P. esculentus. They live syntopically with their parental species P. lessonae and/or P. ridibundus. Some hybrid lineages consist of all males providing a chance to understand the origin and perpetuation of a host-parasite (egg-dependent) system compared to sperm-dependent parthenogenesis...
April 2, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29530094/the-impact-of-biological-sex-on-the-response-to-noise-and-otoprotective-therapies-against-acoustic-injury-in-mice
#7
Béatrice Milon, Sunayana Mitra, Yang Song, Zachary Margulies, Ryan Casserly, Virginia Drake, Jessica A Mong, Didier A Depireux, Ronna Hertzano
BACKGROUND: Noise-induced hearing loss (NIHL) is the most prevalent form of acquired hearing loss and affects about 40 million US adults. Among the suggested therapeutics tested in rodents, suberoylanilide hydroxamic acid (SAHA) has been shown to be otoprotective from NIHL; however, these results were limited to male mice. METHODS: Here we tested the effect of SAHA on the hearing of 10-week-old B6CBAF1/J mice of both sexes, which were exposed to 2 h of octave-band noise (101 dB SPL centered at 11...
March 12, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29514685/sex-as-predictor-for-achieved-health-outcomes-and-received-care-in-ischemic-stroke-and-intracerebral-hemorrhage-a-register-based-study
#8
Carl Willers, Ingrid Lekander, Elisabeth Ekstrand, Mikael Lilja, Hélène Pessah-Rasmussen, Katharina S Sunnerhagen, Mia von Euler
BACKGROUND: Differences in stroke care and health outcomes between men and women are debated. The objective of this study was to explore the relationship between patients' sex and post-stroke health outcomes and received care in a Swedish setting. METHODS: Patients with a registered diagnosis of acute intracerebral hemorrhage (ICH) or ischemic stroke (IS) within regional administrative systems (ICD-10 codes I61* or I63*) and the Swedish Stroke Register during 2010-2011 were included and followed for 1 year...
March 7, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29463315/x-chromosome-dosage-and-presence-of-sry-shape-sex-specific-differences-in-dna-methylation-at-an-autosomal-region-in-human-cells
#9
Bianca Ho, Keelin Greenlaw, Abeer Al Tuwaijri, Sanny Moussette, Francisco Martínez, Elisa Giorgio, Alfredo Brusco, Giovanni Battista Ferrero, Natália D Linhares, Eugênia R Valadares, Marta Svartman, Vera M Kalscheuer, Germán Rodríguez Criado, Catherine Laprise, Celia M T Greenwood, Anna K Naumova
BACKGROUND: Sexual dimorphism in DNA methylation levels is a recurrent epigenetic feature in different human cell types and has been implicated in predisposition to disease, such as psychiatric and autoimmune disorders. To elucidate the genetic origins of sex-specific DNA methylation, we examined DNA methylation levels in fibroblast cell lines and blood cells from individuals with different combinations of sex chromosome complements and sex phenotypes focusing on a single autosomal region--the differentially methylated region (DMR) in the promoter of the zona pellucida binding protein 2 (ZPBP2) as a reporter...
February 20, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29439739/sex-difference-in-clot-lysability-and-association-to-coronary-artery-calcification
#10
Ramshanker Ramanathan, Niels Peter R Sand, Johannes J Sidelmann, Bjarne L Nørgaard, Jørgen B Gram
BACKGROUND: Incidence and prevalence of cardiovascular disease (CVD) differ between sexes, and women experience CVD later than men. Changes in fibrin clot lysability are associated with CVD, and the present study addresses sex differences in fibrin clot lysability in asymptomatic middle-aged individuals and the relation to coronary artery calcification (CAC). METHODS: Participants free of morbidities and medication, N = 163, were randomly chosen from a national registry among citizens, 50 or 60 years of age, and were followed for 5 years...
February 13, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29378665/identification-of-novel-candidate-genes-for-46-xy-disorders-of-sex-development-dsd-using-a-c57bl-6j-y-pos-mouse-model
#11
Hayk Barseghyan, Aleisha Symon, Mariam Zadikyan, Miguel Almalvez, Eva E Segura, Ascia Eskin, Matthew S Bramble, Valerie A Arboleda, Ruth Baxter, Stanley F Nelson, Emmanuèle C Délot, Vincent Harley, Eric Vilain
BACKGROUND: Disorders of sex development (DSD) have an estimated frequency of 0.5% of live births encompassing a variety of urogenital anomalies ranging from mild hypospadias to a discrepancy between sex chromosomes and external genitalia. In order to identify the underlying genetic etiology, we had performed exome sequencing in a subset of DSD cases with 46,XY karyotype and were able to identify the causative genetic variant in 35% of cases. While the genetic etiology was not ascertained in more than half of the cases, a large number of variants of unknown clinical significance (VUS) were identified in those exomes...
January 30, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29351816/effects-of-gut-derived-endotoxin-on-anxiety-like-and-repetitive-behaviors-in-male-and-female-mice
#12
Christopher T Fields, Benoit Chassaing, Alexandra Castillo-Ruiz, Remus Osan, Andrew T Gewirtz, Geert J de Vries
BACKGROUND: Gut dysbiosis is observed in several neuropsychiatric disorders exhibiting increases in anxiety behavior, and recent work suggests links between gut inflammation and such disorders. One source of this inflammation may be lipopolysaccharide (LPS), a toxic component of gram-negative bacteria. Here, we (1) determine whether oral gavage of LPS, as a model of gut-derived endotoxemia, affects anxiety-like and/or repetitive behaviors; (2) test whether these changes depend on TLR4 signaling; and (3) test the extent to which gut-derived endotoxin and TLR4 antagonism affects males and females differently...
January 19, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29351809/axonal-transport-in-a-peripheral-diabetic-neuropathy-model-sex-dimorphic-features
#13
Marzia Pesaresi, Silvia Giatti, Roberto Spezzano, Simone Romano, Silvia Diviccaro, Tiziana Borsello, Nico Mitro, Donatella Caruso, Luis Miguel Garcia-Segura, Roberto Cosimo Melcangi
BACKGROUND: Disruption of axonal transport plays a pivotal role in diabetic neuropathy. A sex-dimorphism exists in the incidence and symptomatology of diabetic neuropathy; however, no studies so far have addressed sex differences in axonal motor proteins expression in early diabetes as well as the possible involvement of neuroactive steroids. Interestingly, recent data point to a role for mitochondria in the sexual dimorphism of neurodegenerative diseases. Mitochondria have a fundamental role in axonal transport by producing the motors' energy source, ATP...
January 19, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29347974/correction-to-sex-differences-in-drugs-the-development-of-a-comprehensive-knowledge-base-to-improve-gender-awareness-prescribing
#14
Linnéa Karlsson Lind, Mia von Euler, Seher Korkmaz, Karin Schenck-Gustafsson
Unfortunately, after publication of this article [1], two errors were noticed. The names of Linnéa Karlsson Lind and Karin Schenck-Gustafsson were formatted incorrectly, attributing incorrect elements to the Given and Family names. Further to this, a reference in Fig. 1 was missing. The line reading, "Fig. 1 shows the working process and each step is explained in more detail below" should instead read, "Fig. 1, modified from Nörby et al. [2], shows the working process and each step is explained in more detail below"...
January 18, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29335024/sex-differences-in-the-late-first-trimester-human-placenta-transcriptome
#15
Tania L Gonzalez, Tianyanxin Sun, Alexander F Koeppel, Bora Lee, Erica T Wang, Charles R Farber, Stephen S Rich, Lauren W Sundheimer, Rae A Buttle, Yii-Der Ida Chen, Jerome I Rotter, Stephen D Turner, John Williams, Mark O Goodarzi, Margareta D Pisarska
BACKGROUND: Development of the placenta during the late first trimester is critical to ensure normal growth and development of the fetus. Developmental differences in this window such as sex-specific variation are implicated in later placental disease states, yet gene expression at this time is poorly understood. METHODS: RNA-sequencing was performed to characterize the transcriptome of 39 first trimester human placentas using chorionic villi following genetic testing (17 females, 22 males)...
January 15, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29310693/sex-differences-and-functional-hemispheric-asymmetries-during-number-comparison
#16
TiAnni Harris, Andrea Scheuringer, Belinda Pletzer
BACKGROUND: Global-local stimuli are hierarchical structures consisting of a larger global structure which is composed of smaller local stimuli. Numbers are also constructed hierarchically, with multi-digit numbers being made up from single digits. During two-digit number comparison, compatible items (larger number contains larger unit digit, e.g., 53 vs. 68) are processed faster and more accurately than incompatible items (smaller number contains larger unit digit, e.g., 58 vs. 63). This so-called unit-decade-compatibility effect has challenged the holistic model of number processing and suggests that the processing of number magnitudes occurs at least in part, decomposed, i...
January 8, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29298725/sex-differences-in-primary-muscle-afferent-sensitization-following-ischemia-and-reperfusion-injury
#17
Jessica L Ross, Luis F Queme, Jordan E Lamb, Kathryn J Green, Michael P Jankowski
BACKGROUND: Chronic pain conditions are more prevalent in women, but most preclinical studies into mechanisms of pain generation are performed using male animals. Furthermore, whereas group III and IV nociceptive muscle afferents provoke central sensitization more effectively than their cutaneous counterparts, less is known about this critical population of muscle nociceptors. Here, we compare the physiology of individual muscle afferents in uninjured males and females. We then characterize the molecular, physiological, and behavioral effects of transient ischemia and reperfusion injury (I/R), a model we have extensively studied in males and in females...
January 3, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29291751/sex-differences-in-urea-breath-test-results-for-the-diagnosis-of-helicobacter-pylori-infection-a-large-cross-sectional-study
#18
Ido Eisdorfer, Varda Shalev, Sophy Goren, Gabriel Chodick, Khitam Muhsen
BACKGROUND: Helicobacter pylori causes peptic ulcer disease and gastric cancer only in a subset of infected persons. Sex differences were shown in results of urea breath test (UBT), a commonly used test for the diagnosis of H. pylori infection. However, factors that might explain these differences, or affect UBT values, are not fully understood. We examined differences in UBT values between H. pylori-infected men and women while adjusting for background characteristics such as age, body mass index (BMI), and smoking...
January 2, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29273081/sex-specific-phenotypes-of-hyperthyroidism-and-hypothyroidism-in-aged-mice
#19
Helena Rakov, Kathrin Engels, Georg Sebastian Hönes, Klaudia Brix, Josef Köhrle, Lars Christian Moeller, Denise Zwanziger, Dagmar Führer
BACKGROUND: Sex and age play a role in the prevalence of thyroid dysfunction (TD), but their interrelationship for manifestation of hyper- and hypothyroidism is still not well understood. Using a murine model, we asked whether sex impacts the phenotypes of hyper- and hypothyroidism at two life stages. METHODS: Hyper- and hypothyroidism were induced by i.p. T4 or MMI/ClO4 -/LoI treatment over 7 weeks in 12- and 20-months-old female and male C57BL/6N mice. Control animals underwent PBS treatment (n = 7-11 animals/sex/treatment)...
December 22, 2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/29202868/sp-a2-contributes-to-mirna-mediated-sex-differences-in-response-to-oxidative-stress-pro-inflammatory-anti-apoptotic-and-anti-oxidant-pathways-are-involved
#20
George T Noutsios, Nithyananda Thorenoor, Xuesheng Zhang, David S Phelps, Todd M Umstead, Faryal Durrani, Joanna Floros
BACKGROUND: Human innate host defense molecules, surfactant protein A1 (SP-A1), and SP-A2 differentially affect the function and proteome of the alveolar macrophage (AM). We hypothesized that SP-A genes differentially regulate the AM miRNome. METHODS: Humanized transgenic mice expressing SP-A1 and SP-A2 were subjected to O3 -induced oxidative stress (OxS) or filtered air (FA), AMs were isolated, and miRNA levels were measured. RESULTS: In SP-A2 males, we found significant changes in miRNome in terms of sex and sex-OxS effects, with 11 miRNAs differentially expressed under OxS...
December 4, 2017: Biology of Sex Differences
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