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https://www.readbyqxmd.com/read/29218771/menopause-related-appendicular-bone-loss-is-mainly-cortical-and-results-in-increased-cortical-porosity
#1
Åshild Bjørnerem, Xiaofang Wang, Minh Bui, Ali Ghasem-Zadeh, John L Hopper, Roger Zebaze, Ego Seeman
After menopause, remodeling becomes unbalanced and rapid. Each of the many remodeling transactions deposits less bone than it resorbed, producing microstructural deterioration. Trabecular bone is said to be lost more rapidly than cortical bone. However, because 80% of the skeleton is cortical, we hypothesized that most menopause-related bone loss and changes in bone microstructure are cortical, not trabecular in origin, and are the result of intracortical remodeling. Distal tibial and distal radial microstructure were quantified during 3...
December 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29211317/neurobiology-of-gender-identity-and-sexual-orientation
#2
REVIEW
Charles E Roselli
Sexual identity and sexual orientation are independent components of a person's sexual identity. These dimensions are most often in harmony with each other and with an individual's genital sex, but not always. This review discusses the relationship of sexual identity and sexual orientation to prenatal factors that act to shape the development of the brain and the expression of sexual behaviors in animals and humans. One major influence discussed relates to organizational effects that the early hormone environment exerts on both gender identity and sexual orientation...
December 6, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/29209482/the-place-for-prophylactic-cerclage-in-the-infertile-patient-with-established-cervical-incompetence-who-conceived-twins-after-septum-reduction
#3
Jennifer Deanna, Omar Abuzied, Fahmi Islam, Ivana Vettriano, Frederico Rocha, Mostafa Abuzeid
Introduction: It is well known that cervical incompetence and associated preterm birth confers greater morbidity and mortality on birth outcomes, with an additional increased risk of cervical incompetence in higher order gestations. While the pathophysiology of cervical incompetence has yet to be elucidated, research has identified risk factors and assessed outcomes of numerous interventions. Cervical cerclage has been shown, in certain situations involving singleton pregnancies, to improve outcomes...
June 2017: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/29205585/re-influence-of-chorionicity-and-gestational-age-at-single-fetal-loss-on-risk-of-preterm-birth-in-twin-pregnancy-analysis-of-stork-multiple-pregnancy-cohort-f-d-antonio-b-thilaganathan-t-dias-and-a-khalil-on-behalf-of-the-southwest-thames-obstetric-research
#4
https://www.readbyqxmd.com/read/29198238/the-effect-of-adverse-intrauterine-conditions-early-childhood-growth-and-famine-exposure-on-age-at-menopause-a-systematic-review
#5
S Sadrzadeh, M Verschuuren, L J Schoonmade, C B Lambalk, R C Painter
When the follicle reserve, which is developed solely during the fetal period, is depleted, women enter menopause. Intrauterine and childhood adverse conditions might affect the ovarian capacity by influencing follicle production in the first trimester, limiting the initial follicle pool or mediate an accelerated follicular loss thereafter. To investigate if adverse early life influences result in younger age at menopause, the following online databases were systematically searched: PubMed, EMBASE, CINHAL (EBSCO) and Cochrane library (Wiley) up to 1 January 2017...
December 4, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29198204/assessing-the-evidence-for-shared-genetic-risks-across-psychiatric-disorders-and-traits
#6
Joanna Martin, Mark J Taylor, Paul Lichtenstein
Genetic influences play a significant role in risk for psychiatric disorders, prompting numerous endeavors to further understand their underlying genetic architecture. In this paper, we summarize and review evidence from traditional twin studies and more recent genome-wide molecular genetic analyses regarding two important issues that have proven particularly informative for psychiatric genetic research. First, emerging results are beginning to suggest that genetic risk factors for some (but not all) clinically diagnosed psychiatric disorders or extreme manifestations of psychiatric traits in the population share genetic risks with quantitative variation in milder traits of the same disorder throughout the general population...
December 4, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/29197109/prospective-test-of-the-developmental-propensity-model-of-antisocial-behavior-from-childhood-and-adolescence-into-early-adulthood
#7
Benjamin B Lahey, Quetzal A Class, David H Zald, Paul J Rathouz, Brooks Applegate, Irwin D Waldman
BACKGROUND: The developmental propensity model of antisocial behavior posits that several dispositional characteristics of children transact with the environment to influence the likelihood of learning antisocial behavior across development. Specifically, greater dispositional negative emotionality, greater daring, and lower prosociality-operationally, the inverse of callousness- and lower cognitive abilities are each predicted to increase risk for developing antisocial behavior. METHODS: Prospective tests of key predictions derived from the model were conducted in a high-risk sample of 499 twins who were assessed on dispositions at 10-17 years of age and assessed for antisocial personality disorder (APD) symptoms at 22-31 years of age...
December 2, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29195773/cognitive-deficits-in-bipolar-disorders-implications-for-emotion
#8
REVIEW
Isabela M M Lima, Andrew D Peckham, Sheri L Johnson
Prominent cognitive deficits have been documented in bipolar disorder, and multiple studies suggest that these deficits can be observed among non-affected first-degree relatives of those with bipolar disorder. Although there is variability in the degree of cognitive deficits, these deficits are robustly relevant for functional outcomes. A separate literature documents clear difficulties in emotionality, emotion regulation, and emotion-relevant impulsivity within bipolar disorder, and demonstrates that these emotion-relevant variables are also central to outcome...
November 21, 2017: Clinical Psychology Review
https://www.readbyqxmd.com/read/29184446/birth-weight-sex-and-celiac-disease-a-nationwide-twin-study
#9
Ralf Kuja-Halkola, Benjamin Lebwohl, Jonas Halfvarson, Louise Emilsson, Patrik K Magnusson, Jonas F Ludvigsson
Objective: Earlier research suggests that birth weight may be associated with celiac disease (CD), but the direction of association has been unclear potentially due to confounding effect from genetic and intrafamilial factors. Through within-twin analyses, we aimed to minimize confounding effects such as twins that share genetic and early environmental exposures. Materials and methods: Using the Swedish Twin Registry, we examined the birth weight of 146,830 twins according to the CD status...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/29177076/effectiveness-and-efficiency-of-different-weight-machine-based-strength-training-programmes-for-patients-with-hip-or-knee-osteoarthritis-a-protocol-for-a-quasi-experimental-controlled-study-in-the-context-of-health-services-research
#10
Inga Krauss, Gerhard Müller, Benjamin Steinhilber, Georg Haupt, Pia Janssen, Peter Martus
Introduction: Osteoarthritis is a chronic musculoskeletal disease with a major impact on the individual and the healthcare system. As there is no cure, therapy aims for symptom release and reduction of disease progression. Physical exercises have been defined as a core treatment for osteoarthritis. However, research questions related to dose response, sustainability of effects, economic efficiency and safety are still open and will be evaluated in this trial, investigating a progressive weight machine-based strength training...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29174128/intrauterine-insemination-with-ovarian-stimulation-versus-expectant-management-for-unexplained-infertility-tui-a-pragmatic-open-label-randomised-controlled-two-centre-trial
#11
Cynthia M Farquhar, Emily Liu, Sarah Armstrong, Nicola Arroll, Sarah Lensen, Julie Brown
BACKGROUND: Women with unexplained infertility are often offered intrauterine insemination (IUI) with ovarian stimulation as an alternative to in-vitro fertilisation (IVF). However, little evidence exists that IUI is an effective treatment. In 2013, the UK National Institute for Health and Care Excellence recommended that IUI should not be routinely offered for couples with unexplained infertility. METHODS: For this pragmatic, open-label, randomised, controlled, two-centre study, we enrolled women attending two fertility clinics in New Zealand with unexplained infertility and an unfavourable prognosis of natural conception...
November 23, 2017: Lancet
https://www.readbyqxmd.com/read/29172241/the-impact-of-resilience-and-subsequent-stressful-life-events-on-mdd-and-gad
#12
Christina M Sheerin, Mackenzie J Lind, Emily A Brown, Charles O Gardner, Kenneth S Kendler, Ananda B Amstadter
BACKGROUND: There remains a dearth of research examining the "buffering" effect of resilience, wherein resilience at one point in time would be expected to protect an individual against development of psychopathology following future adverse life events. METHODS: Using longitudinal data from an epidemiological twin sample (N = 7463), this study tested whether resilience would act as a buffer for stressful life events (SLEs) against risk for major depressive disorder (MDD) and generalized anxiety disorder (GAD)...
November 24, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/29161770/twin-models-of-environmental-and-genetic-influences-on-pubertal-development-salivary-testosterone-and-estradiol-in-adolescence
#13
Andrew D Grotzinger, Frank D Mann, Megan W Patterson, Kathrin Herzhoff, Jennifer L Tackett, Elliot M Tucker-Drob, K Paige Harden
OBJECTIVE: Research on sources of variation in adolescent's gonadal hormone levels is limited. We sought to decompose individual differences in adolescent testosterone, estradiol and pubertal status, into genetic and environmental components. DESIGN: A sample of male and female adolescent twins from the greater Austin and Houston areas provided salivary samples, with a subset of participants providing longitudinal data at two waves. PARTICIPANTS: The sample included 902 adolescent twins, 49% female, ages 13-20 years (M = 15...
November 21, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29152902/the-genetics-of-human-personality
#14
REVIEW
Sandra Sanchez-Roige, Joshua C Gray, James K MacKillop, Chi-Hua Chen, Abraham A Palmer
Personality traits are the relatively enduring patterns of thoughts, feelings, and behaviors that reflect the tendency to respond in certain ways under certain circumstances. Twin and family studies have demonstrated that personality traits are moderately heritable, and can predict various lifetime outcomes, including psychopathology. The Research Domain Criteria (RDoC) characterizes psychiatric diseases as extremes of normal tendencies, including specific personality traits. This implies that heritable variation in personality traits, such as neuroticism, would share a common genetic basis with psychiatric diseases, such as major depressive disorder (MDD)...
November 20, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/29152234/comparison-of-measured-and-predicted-energy-density-of-an-oral-care-chew-for-dogs
#15
Danielle Nuttall, Richard Butterwick, Katja Strauhs, Phil McGenity
The dog chew studied here is a starch-based, twin-screw cooker extruded dog care and treat (C&T) product with oral health benefits. The manufacturing process and nutrient profile of such products are markedly different from those of main meal pet foods. Predicted metabolisable energy (PME) in pet food is calculated using equations derived from main meal feeding studies so it is unclear whether these equations can be applied to C&T products. The present study aimed to directly measure metabolisable energy (ME) content of the dog chew in dogs and compare with calculated PME...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/29144220/is-low-cognitive-functioning-a-predictor-or-consequence-of-major-depressive-disorder-a-test-in-two-longitudinal-birth-cohorts
#16
Jonathan D Schaefer, Matthew A Scult, Avshalom Caspi, Louise Arseneault, Daniel W Belsky, Ahmad R Hariri, Honalee Harrington, Renate Houts, Sandhya Ramrakha, Richie Poulton, Terrie E Moffitt
Cognitive impairment has been identified as an important aspect of major depressive disorder (MDD). We tested two theories regarding the association between MDD and cognitive functioning using data from longitudinal cohort studies. One theory, the cognitive reserve hypothesis, suggests that higher cognitive ability in childhood decreases risk of later MDD. The second, the scarring hypothesis, instead suggests that MDD leads to persistent cognitive deficits following disorder onset. We tested both theories in the Dunedin Study, a population-representative cohort followed from birth to midlife and assessed repeatedly for both cognitive functioning and psychopathology...
November 16, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29143595/why-nature-prevails-over-nurture-in-the-making-of-the-elite-athlete
#17
Evelina Georgiades, Vassilis Klissouras, Jamie Baulch, Guan Wang, Yannis Pitsiladis
While the influence of nature (genes) and nurture (environment) on elite sporting performance remains difficult to precisely determine, the dismissal of either as a contributing factor to performance is unwarranted. It is accepted that a complex interaction of a combination of innumerable factors may mold a talented athlete into a champion. The prevailing view today is that understanding elite human performance will require the deciphering of two major sources of individual differences, genes and the environment...
November 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29143063/translating-aetiological-insight-into-sustainable-management-of-type-2-diabetes
#18
REVIEW
Roy Taylor, Alison C Barnes
Using a low-energy diet as a tool, it has been possible to elucidate the sequence of pathophysiological changes that lead to the onset of type 2 diabetes. Negative energy balance in type 2 diabetes causes a profound fall in liver fat content resulting in normalisation of hepatic insulin sensitivity within 7 days. As the period of negative energy balance extends and liver fat levels fall to low normal, the rate of export of triacylglycerol from the liver falls. Consequent to this, the raised pancreas fat content falls and in early type 2 diabetes, normal first-phase insulin secretion becomes re-established with normal plasma glucose control...
November 15, 2017: Diabetologia
https://www.readbyqxmd.com/read/29141642/doing-implementation-research-on-health-governance-a-frontline-researcher-s-reflexive-account-of-field-level-challenges-and-their-management
#19
Gupteswar Patel, Surekha Garimella, Kerry Scott, Shinjini Mondal, Asha George, Kabir Sheikh
BACKGROUND: Implementation Research (IR) in and around health systems comes with unique challenges for researchers including implementation, multi-layer governance, and ethical issues. Partnerships between researchers, implementers, policy makers and community members are central to IR and come with additional challenges. In this paper, we elaborate on the challenges faced by frontline field researchers, drawing from experience with an IR study on Village Health Sanitation and Nutrition Committees (VHSNCs)...
November 15, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/29140454/gestational-age-specific-perinatal-mortality-rates-for-assisted-reproductive-technology-art-and-other-births
#20
Abrar A Chughtai, Alex Y Wang, Lisa Hilder, Zhuoyang Li, Kei Lui, Cindy Farquhar, Elizabeth A Sullivan
STUDY QUESTION: Is perinatal mortality rate higher among births born following assisted reproductive technology (ART) compared to non-ART births? SUMMARY ANSWER: Overall perinatal mortality rates in ART births was higher compared to non-ART births, but gestational age-specific perinatal mortality rate of ART births was lower for very preterm and moderate to late preterm births. WHAT IS KNOWN ALREADY: Births born following ART are reported to have higher risk of adverse perinatal outcomes compared to non-ART births...
November 13, 2017: Human Reproduction
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