Stefan S. du Plessis

ORCID: 0000-0003-4617-4367
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About
Contact & Profiles
Research Areas
  • Sperm and Testicular Function
  • Reproductive Biology and Fertility
  • Ovarian function and disorders
  • Reproductive Health and Technologies
  • Functional Brain Connectivity Studies
  • Schizophrenia research and treatment
  • Hormonal and reproductive studies
  • Advanced Neuroimaging Techniques and Applications
  • Selenium in Biological Systems
  • Assisted Reproductive Technology and Twin Pregnancy
  • Birth, Development, and Health
  • Reproductive biology and impacts on aquatic species
  • Natural Antidiabetic Agents Studies
  • Diet and metabolism studies
  • Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Bee Products Chemical Analysis
  • Stress Responses and Cortisol
  • Urologic and reproductive health conditions
  • COVID-19 Impact on Reproduction
  • Genomics and Rare Diseases
  • Prenatal Substance Exposure Effects
  • Neonatal and fetal brain pathology
  • Cannabis and Cannabinoid Research
  • Phytoestrogen effects and research
  • Spaceflight effects on biology

Mohammed Bin Rashid University of Medicine and Health Sciences
2019-2025

Stellenbosch University
2016-2025

South African Medical Research Council
2020-2025

King Chulalongkorn Memorial Hospital
2024

University of Okara
2024

Lions Gate Hospital
2024

Singapore General Hospital
2024

Chulalongkorn University
2024

University of the Free State
2024

University of Cape Town
2003-2022

Joaquim Raduà Eduard Vieta Russell T. Shinohara Peter Kochunov Yann Quidé and 95 more Melissa J. Green Cynthia Shannon Weickert Thomas W. Weickert Jason Bruggemann Tilo Kircher Igor Nenadić Murray J. Cairns Marc L. Seal Ulrich Schall Frans Henskens Janice M. Fullerton Bryan Mowry Christos Pantelis Rhoshel Lenroot Vanessa Cropley Carmel M. Loughland Rodney J. Scott Daniel H. Wolf Theodore D. Satterthwaite Yunlong Tan Kang Sim Fabrizio Piras Gianfranco Spalletta Nerisa Banaj Edith Pomarol‐Clotet Aleix Solanes Anton Albajes‐Eizagirre Erick J. Canales‐Rodríguez Salvador Sarró Annabella Di Giorgio Alessandro Bertolino Michael Stäblein Viola Oertel Christian Knöchel Stefan Borgwardt Stefan S. du Plessis Je‐Yeon Yun Jun Soo Kwon Udo Dannlowski Tim Hahn Dominik Grotegerd Clara Alloza Celso Arango Joost Janssen Covadonga M. Díaz‐Caneja Wenhao Jiang Vince D. Calhoun Stefan Ehrlich Kun Yang Nicola G. Cascella Yoichiro Takayanagi Akira Sawa Alexander S. Tomyshev И. С. Лебедева В. Г. Каледа Matthias Kirschner Cyril Höschl David Tomeček Antonín Škoch Thérèse van Amelsvoort Geor Bakker Anthony James Adrian Preda Andrea Weideman Dan J. Stein Fleur M. Howells Anne Uhlmann Henk Temmingh Carlos López‐Jaramillo Ana M. Díaz‐Zuluaga Lydia Fortea Eloy Martínez‐Heras Elisabeth Solana Sara Llufriú Neda Jahanshad Paul M. Thompson Jessica A. Turner Theo G.M. van Erp David C. Glahn Godfrey D. Pearlson Elliot Hong Axel Krug Vaughan J. Carr Paul A. Tooney Gavin Cooper Paul E. Rasser Patricia T. Michie Stanley V. Catts Raquel E. Gur Ruben C. Gur Fude Yang Fengmei Fan Jing Chen Hua Guo Shuping Tan

A common limitation of neuroimaging studies is their small sample sizes. To overcome this hurdle, the Enhancing Neuro Imaging Genetics through Meta-Analysis (ENIGMA) Consortium combines data from many institutions worldwide. However, introduces heterogeneity due to different scanning devices and sequences. ENIGMA projects commonly address with random-effects meta-analysis or mixed-effects mega-analysis. Here we tested whether batch adjustment method, ComBat, can further reduce site-related...

10.1016/j.neuroimage.2020.116956 article EN cc-by NeuroImage 2020-05-27
Dick Schijven Merel C. Postema Masaki Fukunaga Junya Matsumoto Kenichiro Miura and 95 more Sonja M. C. de Zwarte Neeltje E.M. van Haren Wiepke Cahn Hilleke E. Hulshoff Pol René S. Kahn Rosa Ayesa‐Arriola Víctor Ortiz‐García de la Foz Diana Tordesillas‐Gutiérrez Javier Vázquez‐Bourgon Benedicto Crespo‐Facorro Dag Alnæs Andreas Dahl Lars T. Westlye Ingrid Agartz Ole A. Andreassen Erik G. Jönsson Peter Kochunov Jason Bruggemann Stanley V. Catts Patricia T. Michie Bryan Mowry Yann Quidé Paul E. Rasser Ulrich Schall Rodney J. Scott Vaughan J. Carr Melissa J. Green Frans Henskens Carmel M. Loughland Christos Pantelis Cynthia Shannon Weickert Thomas W. Weickert Lieuwe de Haan Katharina Brosch Julia‐Katharina Pfarr Kai G. Ringwald Frederike Stein Andreas Jansen Tilo Kircher Igor Nenadić Bernd Krämer Oliver Gruber Theodore D. Satterthwaite Juan Bustillo Daniel H. Mathalon Adrian Preda Vince D. Calhoun Judith M. Ford Steven G. Potkin Jing Chen Yunlong Tan Zhiren Wang Hong Xiang Fengmei Fan Fabio Bernardoni Stefan Ehrlich Paola Fuentes‐Claramonte María Ángeles García‐León Amalia Guerrero‐Pedraza Raymond Salvador Salvador Sarró Edith Pomarol‐Clotet Valentina Ciullo Fabrizio Piras Daniela Vecchio Nerisa Banaj Gianfranco Spalletta Stijn Michielse Thérèse van Amelsvoort Erin W. Dickie Aristotle N. Voineskos Kang Sim Simone Ciufolini Paola Dazzan Robin M. Murray Woo‐Sung Kim Young‐Chul Chung Christina Andreou André Schmidt Stefan Borgwardt Andrew M. McIntosh Heather C. Whalley Stephen M. Lawrie Stefan S. du Plessis Hilmar Luckhoff Freda Scheffler Robin Emsley Dominik Grotegerd Rebekka Lencer Udo Dannlowski Jesse T. Edmond Kelly Rootes-Murdy Julia M. Stephen Andrew R. Mayer Linda A. Antonucci

Left–right asymmetry is an important organizing feature of the healthy brain that may be altered in schizophrenia, but most studies have used relatively small samples and heterogeneous approaches, resulting equivocal findings. We carried out largest case–control study structural asymmetries with MRI data from 5,080 affected individuals 6,015 controls across 46 datasets, using a single image analysis protocol. Asymmetry indexes were calculated for global regional cortical thickness, surface...

10.1073/pnas.2213880120 article EN cc-by Proceedings of the National Academy of Sciences 2023-03-28

Various systems of antioxidants exist endogenously in the body to help protect it against free radical damage by scavenging excessive ROS and RNS. Melatonin, a hormone secreted pineal gland, responsible for controlling circadian rhythm, is one such endogenous antioxidant. Melatonin has been reported be present human seminal fluid, but its antioxidant activities semen are rather contradictory. This study aimed at establishing effects melatonin treatment on spermatozoa. Spermatozoa were...

10.1111/j.1439-0272.2009.00964.x article EN Andrologia 2010-03-17

Assessment of sperm morphology (including morphometry) is extensively used to determine one the qualities a semen sample and depends on differential staining spermatozoa. A technique should cause as little change dimensions form possible in order reliably evaluate morphometric features sperm. Various techniques have been employed, but only few recommended by World Health Organization are amenable automated morphometry analysis. Our study was aimed at comparing effect three [Papanicolaou...

10.1093/humrep/deq075 article EN Human Reproduction 2010-04-17

Abstract Background Oxidative stress plays a key role in the etiology of male infertility. Significant alterations sperm proteome are associated with poor semen quality. The aim present study was to examine if elevated levels reactive oxygen species cause an alteration proteomic profile spermatozoa. Methods This prospective consisted 52 subjects: 32 infertile men and 20 normal donors. Seminal ejaculates were classified as ROS+ or ROS- evaluated for their profile. Samples pooled subjected...

10.1186/1477-7827-11-48 article EN cc-by Reproductive Biology and Endocrinology 2013-05-20

Several factors have been shown to influence semen parameters, one of which is sexual abstinence; a clinical criteria included in the evaluation provide maximum sperm quality. The aim present study was assess effect daily ejaculation frequency on conventional and functional parameters. Semen samples were collected over period two weeks every second sample per person processed analyzed according World Health Organization guidelines. Furthermore, mitochondrial function, intracellular reactive...

10.1186/s12958-015-0045-9 article EN cc-by Reproductive Biology and Endocrinology 2015-05-20

Abstract Schizophrenia is frequently associated with obesity, which linked neurostructural alterations. Yet, we do not understand how the brain correlates of obesity map onto changes in schizophrenia. We obtained MRI-derived cortical and subcortical measures body mass index (BMI) from 1260 individuals schizophrenia 1761 controls 12 independent research sites within ENIGMA-Schizophrenia Working Group. jointly modeled statistical effects BMI using mixed effects. was additively structure many...

10.1038/s41380-022-01616-5 article EN cc-by Molecular Psychiatry 2022-06-14
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