keyword
MENU ▼
Read by QxMD icon Read
search

2d:4d

keyword
https://www.readbyqxmd.com/read/28537047/comparison-of-the-ratio-of-the-lenght-of-the-second-and-fourth-digits-in-subgroups-of-fertile-and-infertile-cases
#1
Emre Can Akinsal, Abdullah Demirtas, Oguz Ekmekcioglu
PURPOSE: To identify any relationship between known reasons of male infertility and 2D:4D ratio. MATERIALS AND METHODS: A total of 371 males were included in the study. The cases were grouped into 6 groups including sperm count < 5 million/mL, sperm count ≥ 5 million/mL, Klinefelter Syndrome, hypogonadotropic hypogonadism, vasal agenesis and control. Groups were compared with each other in terms of 2D:4D ratios and groups with a 2D:4D ratios below 1 and equal/above 1 were compared...
May 23, 2017: Urology Journal
https://www.readbyqxmd.com/read/28532524/is-maternal-periconceptional-smoking-associated-with-2d-4d-digit-ratio-in-their-children
#2
M P Velez, T E Arbuckle, P Monnier, W D Fraser
The 2nd--4th finger ratio (2D:4D) has been proposed as a potential indicator of greater androgen exposure during fetal development. Maternal periconceptional smoking may alter the homeostasis of fetal androgens, which could in turn result in differential development of 2D:4Ds in utero. The aim of the present study was to assess the effect of maternal periconceptional smoking (i.e. 1 year before through the first trimester of pregnancy) on the 2D:4D of children within The Maternal-Infant Research on Environmental Chemicals (MIREC) study...
May 23, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28529968/descriptive-statistics-and-regressions-of-2d-4d-and-educational-attainment-based-on-rlms-data
#3
John V C Nye, Maksym Bryukhanov, Sergiy Polyachenko
We document the descriptive statistics and detailed regression outputs for educational attainment and measured 2D:4D ratios, based on the RLMS data (20th round, conducted in 2011-2012). Regression analysis is conducted using STATA 13, gologit2 which is a special code for the generalized ordered logit regression in STATA environment. We provide graphs of differences in means of 2D:4D ratios by educational attainment. Information about the distribution of self-identified nationalities and fields of university degrees of respondents is presented...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28527753/asymmetry-and-empathy-higher-asymmetry-is-associated-with-lower-levels-of-mentalizing
#4
Colton B Christian, Azim F Shariff
People differ in their mentalizing abilities. Though past research suggests that individual differences in exposure to prenatal testosterone may be able to explain why some people excel at mentalizing, while others struggle, meta-analyses yield a null relationship between 2D:4D ratio (a proxy for prenatal testosterone) and mentalizing. Importantly, however, past research has not examined the asymmetrical differences between the digit ratios on the right and left hands. In the current work, we test whether the difference between the digit ratios of the left and right hands may function as a better predictor of mentalizing than digit ratio alone...
May 18, 2017: Early Human Development
https://www.readbyqxmd.com/read/28509846/a-new-ergosterol-analog-a-new-bis-anthraquinone-and-anti-obesity-activity-of-anthraquinones-from-the-marine-sponge-associated-fungus-talaromyces-stipitatus-kufa-0207
#5
Jidapa Noinart, Suradet Buttachon, Tida Dethoup, Luís Gales, José A Pereira, Ralph Urbatzka, Sara Freitas, Michael Lee, Artur M S Silva, Madalena M M Pinto, Vítor Vasconcelos, Anake Kijjoa
A new ergosterol analog, talarosterone (1) and a new bis-anthraquinone derivative (3) were isolated, together with ten known compounds including palmitic acid, ergosta-4,6,8(14),22-tetraen-3-one, ergosterol-5,8-endoperoxide, cyathisterone (2), emodin (4a), questinol (4b), citreorosein (4c), fallacinol (4d), rheoemodin (4e) and secalonic acid A (5), from the ethyl acetate extract of the culture of the marine sponge-associated fungus Talaromyces stipitatus KUFA 0207. The structures of the new compounds were established based on extensive 1D and 2D spectral analysis, and in the case of talarosterone (1), the absolute configurations of its stereogenic carbons were determined by X-ray crystallographic analysis...
May 16, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28504855/relationships-between-digit-ratio-2d-4d-and-basketball-performance-in-australian-men
#6
Nathan A Frick, Melissa J Hull, John T Manning, Grant R Tomkinson
OBJECTIVE: To investigate relationships between the digit ratio (2D:4D) and competitive basketball performance in Australian men. METHODS: Using an observational cross-sectional design a total of 221 Australian basketball players who competed in the Olympic Games, International Basketball Federation World Championships/Cup, Australian National Basketball League, Central Australian Basketball League or socially had their 2D:4Ds measured. Analysis of variance was used to assess differences in mean 2D:4Ds between men playing at different competitive standards, with relationships between 2D:4Ds and basketball game-related statistics assessed using Pearson's product moment correlations in men playing at a single competitive standard...
May 6, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28499134/digit-ratio-2d-4d-and-postoperative-pain-perception
#7
Anna Kasielska-Trojan, Piotr Stabryła, Bogusław Antoszewski
BACKGROUNDS: It has not been established whether sex differences in pain perception are influenced by prenatal sex hormones. Digit ratio as an indicator of prenatal hormone exposure can be used as a simple measure of the influence of prenatal hormones on pain sensitivity or perception in adulthood. OBJECTIVE: The aim of this study was to determine a correlation between the 2D:4D ratio and pain perception in the postoperative period after rhinoplasty. METHOD: A prospective cohort study of 100 patients (50 women of the mean age of 30...
May 9, 2017: Early Human Development
https://www.readbyqxmd.com/read/28499133/value-of-digit-ratio-2d-4d-a-biomarker-of-prenatal-hormone-exposure-is-stable-across-the-menstrual-cycle
#8
Magdalena Klimek, Urszula M Marcinkowska, Grazyna Jasienska
Digit ratio (2D:4D) is used as a marker of prenatal hormone exposure and, consequently, as a predictor of many characteristics throughout a woman's lifespan. A previous study has suggested that values of 2D:4D vary across menstrual cycles and further questioned the reliability of a single measurement of 2D:4D among cycling women, while another study failed to confirm these results. However, these studies estimated the timing of cycle phases based on a date of menstruation reported by participants and also had small sample sizes...
May 9, 2017: Early Human Development
https://www.readbyqxmd.com/read/28497486/5d-whole-heart-sparse-mri
#9
Li Feng, Simone Coppo, Davide Piccini, Jerome Yerly, Ruth P Lim, Pier Giorgio Masci, Matthias Stuber, Daniel K Sodickson, Ricardo Otazo
PURPOSE: A 5D whole-heart sparse imaging framework is proposed for simultaneous assessment of myocardial function and high-resolution cardiac and respiratory motion-resolved whole-heart anatomy in a single continuous noncontrast MR scan. METHODS: A non-electrocardiograph (ECG)-triggered 3D golden-angle radial balanced steady-state free precession sequence was used for data acquisition. The acquired 3D k-space data were sorted into a 5D dataset containing separated cardiac and respiratory dimensions using a self-extracted respiratory motion signal and a recorded ECG signal...
May 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28470915/comparison-of-fast-acquisition-strategies-in-whole-heart-four-dimensional-flow-cardiac-mr-two-center-1-5-tesla-phantom-and-in-vivo-validation-study
#10
Pankaj Garg, Jos J M Westenberg, Pieter J van den Boogaard, Peter P Swoboda, Rahoz Aziz, James R J Foley, Graham J Fent, F G J Tyl, L Coratella, Mohammed S M ElBaz, R J van der Geest, David M Higgins, John P Greenwood, Sven Plein
PURPOSE: To validate three widely-used acceleration methods in four-dimensional (4D) flow cardiac MR; segmented 4D-spoiled-gradient-echo (4D-SPGR), 4D-echo-planar-imaging (4D-EPI), and 4D-k-t Broad-use Linear Acquisition Speed-up Technique (4D-k-t BLAST). MATERIALS AND METHODS: Acceleration methods were investigated in static/pulsatile phantoms and 25 volunteers on 1.5 Tesla MR systems. In phantoms, flow was quantified by 2D phase-contrast (PC), the three 4D flow methods and the time-beaker flow measurements...
May 4, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28455102/sleep-deprivation-accelerates-the-progression-of-alzheimer-s-disease-by-influencing-a%C3%AE-related-metabolism
#11
Lihong Chen, Junshan Huang, Lanfang Yang, Xue-Ai Zeng, Ya Zhang, Xiufeng Wang, Mingqi Chen, Xing Li, Yifan Zhang, Min Zhang
Sleep disorders have previously been connected with the neurodegenerative pathology of Alzheimer's disease (AD) due to the aggregation of β-amyloid(Aβ)peptides and tau proteinsinduced by sleep deprivation (SD). However, the underlying mechanisms remain unclear. Therefore, this study was performed to clarify how Aβ-related metabolism is regulated after SD. Three-month-old Sprague-Dawley rats (250-300g) were randomly divided into 5 groups: two SD groups(i.e.,SD-2d and SD-4d), two platform control groups(i...
April 25, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28426948/digit-ratio-2d-4d-and-handgrip-strength-are-correlated-in-women-but-not-in-men-in-hui-ethnicity
#12
Hong Lu, Dan Shen, Lu Wang, Shibo Niu, Chunyue Bai, Zhanbing Ma, Zhenghao Huo
INTRODUCTION: Digit ratio, especially second-to-fourth digit ratio (2D:4D) is used as a biomarker of prenatal testosterone exposure and was found associated with physical ability, such as handgrip strength (HGS). Recently, this association has been discussed in several ethnic groups. AIMS: To investigate correlations between 2D:4D and HGS in Chinese population of Ningxia Hui ethnicity. METHODS: Here we firstly present the evidence on digit ratio and HGS of 346 college students (119 males and 227 females) by collecting photographs and HGS of both hands at Yinchuan city, in the Ningxia province of China...
April 17, 2017: Early Human Development
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
#13
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/28408632/4d-dsa-for-dynamic-visualization-of-cerebral-vasculature-a-single-center-experience-in-26-cases
#14
S Lang, P Gölitz, T Struffert, J Rösch, K Rössler, M Kowarschik, C Strother, A Doerfler
BACKGROUND AND PURPOSE: 4D DSA allows acquisition of time-resolved 3D reconstructions of cerebral vessels by using C-arm conebeam CT systems. The aim of our study was to evaluate this new method by qualitative and quantitative means. MATERIALS AND METHODS: 2D and 4D DSA datasets were acquired in patients presenting with AVMs, dural arteriovenous fistulas, and cerebral aneurysms. 4D DSA was compared with 2D DSA in a consensus reading of qualitative and quantitative parameters of AVMs (eg, location, feeder, associated aneurysms, nidus size, drainage, Martin-Spetzler Score), dural arteriovenous fistulas (eg, fistulous point, main feeder, diameter of the main feeder, drainage), and cerebral aneurysms (location, neck configuration, aneurysmal size)...
April 13, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28406697/how-do-we-love-romantic-love-style-in-men-is-related-to-lower-testosterone-levels
#15
J Babková Durdiaková, P Celec, I Koborová, T Sedláčková, G Minárik, D Ostatníková
Testosterone has been widely investigated in associations with many aspects of social interactions, emotions and behavior. No research has been conducted on its contribution to the variability of love styles in human. The aim of this paper was to uncover the possible relationship between not only the actual plasma testosterone levels, but also the prenatal testosterone level (expressed as 2D:4D ratio) and the sensitivity of androgen receptor and love typology in young heathy men. There are six love styles which are primary including Eros (passionate romantic love), Ludus (playful) and Storge (friendly) and secondary love consisting of Mania (obsessive), Pragma (practical realistic) and Agape (altruistic)...
April 12, 2017: Physiological Research
https://www.readbyqxmd.com/read/28383757/prenatal-and-adult-androgen-activities-in-alcohol-dependence
#16
B Lenz, C Mühle, B Braun, C Weinland, P Bouna-Pyrrou, J Behrens, S Kubis, K Mikolaiczik, M-R Muschler, S Saigali, M Sibach, P Tanovska, S E Huber, U Hoppe, A Eichler, H Heinrich, G H Moll, A Engel, T W Goecke, M W Beckmann, P A Fasching, C P Müller, J Kornhuber
OBJECTIVE: Alcohol dependence is more prevalent in men than in women. The evidence for how prenatal and adult androgens influence alcohol dependence is limited. We investigated the effects of prenatal and adult androgen activity on alcohol dependence. Moreover, we studied how the behaviours of pregnant women affect their children's prenatal androgen load. METHOD: We quantified prenatal androgen markers (e.g., second-to-fourth finger length ratio [2D : 4D]) and blood androgens in 200 early-abstinent alcohol-dependent in-patients and 240 controls (2013-2015, including a 12-month follow-up)...
April 6, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28370849/2d-4d-digit-ratio-is-associated-with-cognitive-decline-but-not-frailty-in-community-dwelling-older-adults
#17
Celina Gonçalves, Tiago Coelho, Sérgio Machado, Nuno Barbosa Rocha
OBJECTIVES: To understand the relation between 2D:4D ratio, frailty, and cognitive decline in community-dwelling elderly people. METHODS: A total of 175 community-dwelling elderly people were included. To determine frailty, participants completed the Tilburg Frailty Indicator (TFI) and the Survey of Health, Ageing and Retirement in Europe (SHARE-FI). Cognitive functioning was determined using the Mini-Mental State Examination (MMSE). 2D and 4D finger lengths of each hand were measured using a scanner...
March 28, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28358645/the-relationship-between-second-to-fourth-digit-2d-4d-ratios-and-problematic-and-pathological-internet-use-among-turkish-university-students
#18
Fatih Canan, Servet Karaca, Melike Düzgün, Ayşe Merve Erdem, Esranur Karaçaylı, Nur Begüm Topan, Sang-Kyu Lee, Zu Wei Zhai, Murat Kuloğlu, Marc N Potenza
Background and aims The ratio of the second and fourth fingers (2D:4D ratio) is a sexually dimorphic trait, with men tending to have lower values than women. This ratio has been related to prenatal testosterone concentrations and addictive behaviors including problematic video-gaming. We aimed to investigate the possible association between 2D:4D ratios and Internet addiction and whether such a relationship would be independent of impulsivity. Methods A total of 652 university students (369 women, 283 men), aged 17-27 years, were enrolled in the study...
March 1, 2017: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/28345754/second-to-fourth-digit-ratio-2d-4d-is-unrelated-to-measures-of-somatic-reproductive-effort-among-young-men-from-cebu-the-philippines
#19
Alexander V Georgiev, Calen P Ryan, Lee T Gettler, Thomas W McDade, Christopher W Kuzawa
OBJECTIVES: A low second-to-fourth (2D:4D) digit ratio, a retrospective marker of high prenatal androgens, predicts increased investment in costly sexually dimorphic traits in men in some studies, although results are mixed. Here we test the hypothesis that the association of low 2D:4D ratios with increased muscularity and decreased adiposity depends on current testosterone (T) levels, such that digit ratio will be a particularly strong predictor of outcomes among men exhibiting a mating-effort-oriented endocrinological profile (high T)...
March 27, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28336224/surface-coverage-with-single-vs-multiple-gaze-surface-topography-to-fit-scleral-lenses
#20
Gregory DeNaeyer, Donald R Sanders, Timothy S Farajian
OBJECTIVES: To determine surface coverage of measurements using the sMap3D(®) corneo-scleral topographer in patients presenting for scleral lens fitting. METHODS: Twenty-five eyes of 23 scleral lens patients were examined. Up-gaze, straight-gaze, and down-gaze positions of each eye were "stitched" into a single map. The percentage surface coverage between 10mm and 20mm diameter circles from corneal center was compared between the straight-gaze and stitched images...
March 20, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
keyword
keyword
98331
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"