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https://www.readbyqxmd.com/read/29356403/do-sex-reversal-procedures-differentially-affect-agonistic-behaviors-and-sex-steroid-levels-depending-on-the-sexual-genotype-in-nile-tilapia
#1
Vincent Gennotte, Balagizi Akonkwa, Charles Mélard, Mathieu Denoël, Charlotte A Cornil, Carole Rougeot
In Nile tilapia Oreochromis niloticus, phenotypic males and females with different sexual genotypes (XX, XY, YY) have particular behavioral and physiological traits. Compared to natural XX females and XY males, XY and YY females and XX males expressed higher level of aggressiveness that could be related to higher levels of 17β-estradiol and 11-ketotestosterone, respectively. Our results suggest that the presence of a Y chromosome increases aggressiveness in females. However, since the same relationship between aggressiveness and the Y chromosome is not observed in males, we can hypothesize that the differences in aggressiveness are not directly dependent on the genotype but on the sex reversal procedures applied on young fry during their sexual differentiation to produce these breeders...
April 2017: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29356364/the-effect-of-hormone-manipulations-on-sex-ratios-varies-with-environmental-conditions-in-a-turtle-with-temperature-dependent-sex-determination
#2
Daniel A Warner, Timothy S Mitchell, Brooke L Bodensteiner, Fredric J Janzen
Exogenous application of steroids and related substances to eggs affects offspring sex ratios in species with temperature-dependent sex determination (TSD). Laboratory studies demonstrate that this effect is most pronounced near the constant temperature that produces 1:1 sex ratios (i.e., pivotal temperature). However, the impact of such chemicals on sex determination under natural nest temperatures (which fluctuate daily) is unknown, but could provide insight into the relative contributions of these two factors under natural conditions...
April 2017: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29356253/current-protein-and-amino-acid-intakes-among-japanese-people-analysis-of-the-2012-national-health-and-nutrition-survey
#3
Kazuko Ishikawa-Takata, Hidemi Takimoto
AIM: To evaluate protein and amino acid intakes and distribution among Japanese people in terms of prevention of sarcopenia or frailty. METHODS: We carried out a cross-sectional study using data from Japan's 2012 National Health and Nutrition Survey. From the original dataset, we selected individuals aged ≥30 years, who were not pregnant or lactating, and for whom dietary intake, bodyweight and body height data were available. Protein intake was calculated using exclusive software developed for the survey...
January 22, 2018: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/29356165/period-prevalence-and-reporting-rate-of-medication-errors-among-nurses-in-iran-a-systematic-review-and-meta-analysis
#4
Behzad Karami Matin, Mohammad Hajizadeh, Bijan Nouri, Shahab Rezaeian, Masoud Mohammadi, Satar Rezaei
AIMS: To estimate the 1-year period prevalence of medication errors and the reporting rate to nurse managers among nurses working in hospitals in Iran. BACKGROUND: Medication errors are one of the main factors affecting the quality of hospital services and reducing patient safety in health care systems. METHOD: A literature search from Iranian and international scientific databases was developed to find relevant studies. Meta-regression was used to identify which characteristics may have a confounding effect on the pooled prevalence estimates...
January 22, 2018: Journal of Nursing Management
https://www.readbyqxmd.com/read/29356052/increased-risk-of-psoriasis-following-scabies-infection-a-nationwide-population-based-matched-cohort-study
#5
Jui-Ming Liu, Chien-Yu Lin, Fung-Wei Chang, Yueh-Ping Liu, Chung-Pin Liang, Ren-Jun Hsu
Both scabies and psoriasis are pruritic inflammatory skin diseases. The clinical manifestations are similar and provocation of psoriasis by mite bite was reported. The association between scabies and psoriasis was not investigated before. We conducted this nationwide population-based matched-cohort study to describe if patients with a diagnosis of scabies have a different risk of developing new psoriasis. From the National Health Insurance Research Database of Taiwan, patients with scabies (n = 5137) were identified and matched for age and sex with non-scabies controls (n = 19 142)...
January 21, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29355674/sex-differences-in-rat-decision-making-the-confounding-role-of-extraneous-feeder-sampling-between-trials
#6
Clifford H Donovan, Scott A Wong, Sienna H Randolph, Rachel A Stark, Robbin L Gibb, Aaron J Gruber
Although male and female rats appear to perform differently in some tasks, a clear picture of sex differences in decision-making has yet to develop. This is in part due to significant variability arising from differences in strains and tasks. The aim of this study was to characterize the effects of sex on specific response elements in a reinforcement learning task so as to help identify potential explanations for this variability. We found that the primary difference between sexes was the propensity to approach feeders out of the task context...
January 17, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29355534/neurokinin-b-signaling-in-hermaphroditic-species-a-study-of-the-orange-spotted-grouper-epinephelus-coioides
#7
Huapu Chen, Ling Xiao, Yali Liu, Shuisheng Li, Guangli Li, Yong Zhang, Haoran Lin
Neurokinin B (NKB) plays important roles in the mammalian reproductive axis by modulating the release of gonadotropin-releasing hormone (GnRH) and gonadotropins. In the present study, the tac3 cDNA was cloned from a hermaphroditic species, the orange-spotted grouper. Sequence analysis showed that the grouper Tac3 precursor encoded two tachykinin peptides, NKB and NKB-related peptide (NKBRP). Expression analysis in different tissues revealed that tac3 mRNA was highly expressed in the brain of the orange-spotted grouper...
January 17, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29355495/endocrine-active-metals-prenatal-stress-and-enhanced-neurobehavioral-disruption
#8
Marissa Sobolewski, Katherine Conrad, Elena Marvin, Joshua L Allen, Deborah A Cory-Slechta
Metals, including lead (Pb), methylmercury (MeHg) and arsenic (As), are long-known developmental neurotoxicants. More recently, environmental context has been recognized to modulate metals toxicity, including nutritional state and stress exposure. Modulation of metal toxicity by stress exposure can occur through shared targeting of endocrine systems, such as the hypothalamic-pituitary-adrenal axis (HPA). Our previous rodent research has identified that prenatal stress (PS) modulates neurotoxicity of two endocrine active metals (EAMs), Pb and MeHg, by altering HPA and CNS systems disrupting behavior...
January 17, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29355347/emotions-in-everyday-life-during-social-movements-prospective-predictions-of-mental-health
#9
Wai Kai Hou, George A Bonanno
Emotion mobilizes and demobilizes a social movement while the movement itself impacts people's emotions. An evidence base is needed for developing timely emotion-focused counseling services for affected populations worldwide. This experience sampling study investigated the impact of a social movement on everyday emotional reactivity, variability, instability, and persistence, and whether and how these predicted subsequent psychological distress and well-being among 108 community-dwelling adults. Fifty-four participants reported momentary events and emotions 5 times daily over 7 days during the Umbrella Movement in Hong Kong...
January 2018: Journal of Counseling Psychology
https://www.readbyqxmd.com/read/29354738/inpatient-morbidity-after-spinal-deformity-surgery-in-patients-with-movement-disorders
#10
Rafael De la Garza Ramos, C Rory Goodwin, Amit Jain, Daniel Martinez-Ramirez, Isaac O Karikari, Daniel M Sciubba
Background: To investigate the inpatient perioperative morbidity rate of patients with movement disorders (MD) after spinal deformity surgery. Methods: The Nationwide Inpatient Sample database from 2002 to 2011 was queried to identify adult patients with MD who underwent spinal deformity surgery. Complication rates were compared between patients with MD and controls. A multiple logistic regression analysis was conducted to assess the effect of MD on outcome. Results: A total of 365 patients with MD (3...
December 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29354297/a-new-method-for-sex-estimation-from-maxillary-suture-length-in-a-thai-population
#11
Apichat Sinthubua, Sittiporn Ruengdit, Srijit Das, Pasuk Mahakkanukrauh
Sex estimation is one of the crucial procedures in the biological profile identification of human skeletal remains. Knowing sex of unknown case can lead to accurate and appropriate methods for predicting age, stature, ancestry, or even personal identification. Skull is one of the most reliable one among other skeletons and it is usually retained for both archaeological and forensic contexts. Although many morphological features and metric measurements of skull have been studied for sexing, but to the best of our knowledge is no study on maxillary suture length for sex estimation...
December 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/29354013/ultrasonographic-interval-changes-in-solid-thyroid-nodules-after-ultrasonography-guided-fine-needle-aspiration
#12
Ik Jung Hwang, Dong Wook Kim, Yoo Jin Lee, Hye Jung Choo, Soo Jin Jung, Hye Jin Baek
Objective: None of the previous studies have investigated the interval change in ultrasonography (US) features of solid thyroid nodules (STNs) after US-guided fine-needle aspiration (US-FNA). This study aimed to assess the prevalence and characteristics of US interval changes in STNs after US-FNA. Materials and Methods: This study included 257 STNs in 257 patients in whom thyroid US and initial US-FNA had been performed by two radiologists from January 2015 to June 2015...
January 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29353742/trunk-pelvis-and-hip-biomechanics-in-individuals-with-femoroacetabular-impingement-syndrome-strategies-for-step-ascent
#13
Laura E Diamond, Kim L Bennell, Tim V Wrigley, Rana S Hinman, Michelle Hall, John O'Donnell, Paul W Hodges
BACKGROUND: Femoroacetabular impingment (FAI) syndrome is common among young active adults and a proposed risk factor for the future development of hip osteoarthritis. Pain is dominant and drives clinical decision-making. Evidence for altered hip joint function in this patient population is inconsistent, making the identification of treatment targets challenging. A broader assessment, considering adjacent body segments (i.e. pelvis, trunk) and individual movement strategies, may better inform treatment programs...
January 11, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29353294/development-and-validation-of-the-alcohol-expectancy-questionnaire-short-form-eq-sf
#14
Laura Mezquita, Laura Camacho, Carlos Suso-Ribera, Generós Ortet, Manuel I Ibáñez
Alcohol expectancies are proximal variables to alcohol use and misuse. In recent decades, different measures have been developed to assess this construct. One of the most frequently used and recommended instruments is the Expectancy Questionnaire (EQ; Leigh y Stacy, 1993). Our aim is to develop a short version of the EQ (EQ-SF) for suitable use in time-limited administrations. Two samples, adolescents (N = 514, 57.20% females) and adults (N = 548, 61.50% females), completed the EQ together with alcohol-use measures...
January 15, 2018: Adicciones
https://www.readbyqxmd.com/read/29353265/growth-sexual-and-bone-development-in-a-boy-with-bilateral-anorchia-under-testosterone-treatment-guided-by-the-development-of-his-monozygotic-twin
#15
Sara Vandewalle, Eva Van Caenegem, Margarita Craen, Youri Taes, Jean-Marc Kaufman, Guy T'Sjoen
BACKGROUND: Sex steroids are essential for sexual maturation, linear growth and bone development. However, there is no consensus on the optimal timing, dosage and dosage interval of testosterone therapy to induce pubertal development and achieve a normal adult height and bone mass in children with hypogonadism. CASE PRESENTATION: A monozygotic monochorial male twin pair, of which one boy was diagnosed with anorchia at birth due to testicular regression syndrome was followed from the age of 3 until the age of 18 years...
January 20, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29353138/competitive-swimmers-with-hypermobility-have-strength-and-fatigue-deficits-in-shoulder-medial-rotation
#16
Behnam Liaghat, Birgit Juul-Kristensen, Thomas Frydendal, Camilla Marie Larsen, Karen Søgaard, Aki Ilkka Tapio Salo
Generalised Joint Hypermobility including shoulder hypermobility (GJHS) in swimmers is considered an intrinsic risk factor for shoulder injuries. The aim was to investigate the association of GJHS with shoulder strength, fatigue development and muscle activity during swimming-related shoulder rotations. Totally, 38 competitive swimmers (aged 13-17 years) participated, 19 were competitive swimmers with GJHS and 19 were age, sex and club matched swimmers without GJHS. Concentric isokinetic force in medial and lateral rotations were measured at 60°/s (5 repetitions) and 180°/s (10 repetitions)...
January 10, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29353072/development-of-subcortical-volumes-across-adolescence-in-males-and-females-a-multisample-study-of-longitudinal-changes
#17
Megan M Herting, Cory Johnson, Kathryn L Mills, Nandita Vijayakumar, Meg Dennison, Chang Liu, Anne-Lise Goddings, Ronald E Dahl, Elizabeth R Sowell, Sarah Whittle, Nicholas B Allen, Christian K Tamnes
The developmental patterns of subcortical brain volumes in males and females observed in previous studies have been inconsistent. To help resolve these discrepancies, we examined developmental trajectories using three independent longitudinal samples of participants in the age-span of 8-22 years (total 216 participants and 467 scans). These datasets, including Pittsburgh (PIT; University of Pittsburgh, USA), NeuroCognitive Development (NCD; University of Oslo, Norway), and Orygen Adolescent Development Study (OADS; The University of Melbourne, Australia), span three countries and were analyzed together and in parallel using mixed-effects modeling with both generalized additive models and general linear models...
January 15, 2018: NeuroImage
https://www.readbyqxmd.com/read/29353024/outcomes-and-mortality-prediction-model-of-critically-ill-adults-with-acute-respiratory-failure-and-interstitial-lung-disease
#18
Whitney Gannon, David J Lederer, Mauer Biscotti, Azka Javaid, Nina Patel, Daniel Brodie, Matthew Bacchetta, Matthew Baldwin
BACKGROUND: We aimed to examine short- and long-term mortality in a mixed population of interstitial lung disease (ILD) patients with acute respiratory failure, and to identify those at lower versus higher risk of in-hospital death. METHODS: We conducted a single-center retrospective cohort study of 126 consecutive adults with ILD admitted to an intensive care unit (ICU) for respiratory failure at a tertiary care hospital between 2010 and 2014 who did not undergo lung transplantation during their hospitalization...
January 15, 2018: Chest
https://www.readbyqxmd.com/read/29352997/microglia-and-neonatal-brain-injury
#19
Carina Mallard, Marie-Eve Tremblay, Zinaida S Vexler
Microglial cells are now recognized as the "gate-keepers" of healthy brain microenvironment with their disrupted functions adversely affecting neurovascular integrity, neuronal homeostasis, and network connectivity. The perception that these cells are purely toxic under neurodegenerative conditions has been challenged by a continuously-increasing understanding of their complexity, the existence of a broad array of microglial phenotypes, and their ability to rapidly change in a context-dependent manner to attenuate or exacerbate injuries of different nature...
January 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29352842/amylin-in-the-insulin-resistance-of-patients-with-rheumatoid-arthritis
#20
Ivan Ferraz-Amaro, Raquel López-Mejias, Beatriz Tejera-Segura, Antonia M de Vera-González, Begoña Ubilla, Jose M Olmos, José Luis Hernández, Miguel Angel González-Gay
OBJECTIVES: Amylin, which is co-secreted with insulin, plays a role in glycemic regulation and is impaired in type 2 diabetes. In the present study we assess, for the first time, the implication of amylin in the development of insulin resistance (IR) in rheumatoid arthritis (RA). METHODS: This was a cross-sectional study involving 361 non-diabetic individuals, 151 patients with RA and 210 sex-matched controls. Insulin, C-peptide, amylin, lipoprotein serum concentrations, and IR indexes by homeostatic model assessment (HOMA2) were evaluated in patients and controls...
January 15, 2018: Clinical and Experimental Rheumatology
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