Article
Andrology
Nahid Punjani, Omar Al-Hussein Alawamlh, Soo Jeong Kim, Carolyn A. Salter, Gal Wald, Miriam Feliciano, Nicholas Williams, Vanessa Dudley, Marc Goldstein
Summary: This study aimed to examine trends in population-level semen quality over the past 20 years. The results showed a decrease in semen volume and sperm morphology, while sperm concentration and count remained fairly constant. Sperm motility displayed a decreasing trend.
WORLD JOURNAL OF MENS HEALTH
(2022)
Article
Obstetrics & Gynecology
Sorena Keihani, Lauren E. Verrilli, Chong Zhang, Angela P. Presson, Heidi A. Hanson, Alexander W. Pastuszak, Erica B. Johnstone, James M. Hotaling
Summary: This study found that thresholds for total sperm count, sperm concentration, progressive motility, and total progressive motile sperm count (TPMC) well above the WHO references were associated with earlier time-to-conception and higher conception rates in couples undergoing fertility evaluation. Higher values of sperm count, concentration, and progressive motility beyond the WHO references were still associated with better conception rates and time-to-conception.
HUMAN REPRODUCTION
(2021)
Article
Andrology
Nahid Punjani, Omar Al-Hussein Alawamlh, Soo Jeong Kim, Carolyn A. Salter, Gal Wald, Miriam Feliciano, Nicholas Williams, Vanessa Dudley, Marc Goldstein
Summary: This study examined the trends of population-level semen quality over a 20-year period. The results showed a decrease in semen volume and sperm morphology, while sperm concentration and count remained fairly constant. There appeared to be a slight increase in semen pH and a decrease in sperm motility.
WORLD JOURNAL OF MENS HEALTH
(2023)
Article
Medicine, General & Internal
Rossella Cannarella, Rosita A. Condorelli, Carmelo Gusmano, Nunziata Barone, Nunziatina Burrello, Antonio Aversa, Aldo E. Calogero, Sandro La Vignera
Summary: The study observed a slight decrease in total sperm count and percentage of spermatozoa with normal morphology, while a significant increase in progressive sperm motility was found in men from Eastern Sicily between 2011 and 2020. The total sperm count was significantly lower and a trend of increasing progressive sperm motility was noticed in the quinquennium 2016-2020 compared to 2011-2015. The city of residence did not have a significant influence on sperm parameters.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Environmental Sciences
Xinzong Zhang, Zhaoyu Fan, Qiling Wang, Xinyi Deng, Ruijun Xu, Yingxin Li, Tingting Liu, Rui Wang, Chunxiang Shi, Suli Huang, Ziquan Lv, Gongbo Chen, Yong-Gang Duan, Yuewei Liu
Summary: This study reveals an association between ambient temperature and semen quality in South China, with higher temperatures leading to a reduction in semen quality. The findings indicate that a 5-degree Celsius increase in temperature during the 0-90 day period before ejaculation is associated with decreased sperm concentration, total sperm number, total motility, and normal sperm morphology. Furthermore, specific critical exposure windows of 10-14 days and 70-90 days before ejaculation were identified for sperm motility, count, and morphology.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Edidiong Nnamso Akang, Chinyerum Sylvia Opuwari, Swesme Enyioma-Alozie, Lionel Wildy Moungala, Tamarapreye Emmanuel Amatu, Ibrahim Wada, Rose Ogeyi Ogbeche, Oluwatoyin Omolayo Ajayi, Mojisola Modupe Aderonmu, Olaitan Boluwatife Shote, Lateef Adekunle Akinola, Oladapo Adenrele Ashiru, Ralf Henkel
Summary: A study on semen parameters in Nigeria and South Africa between 2010 and 2019 reveals a significant decline in sperm quality, highlighting the increasing male infertility problem in these regions.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Hong Qian, Qiaoqiao Xu, Wenkai Yan, Yun Fan, Zhi Li, Chengzhe Tao, Feng Zhang, Chuncheng Lu
Summary: The study found that exposure to higher levels of air pollution was associated with impaired semen quality, including decreased sperm concentration, reduced sperm count, and declined total motility.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Carlota Quinones-Perez, Amparo Martinez, Isabel Ortiz, Francisco Crespo, Jose Luis Vega-Pla
Summary: Stallion infertility is a significant issue in the horse industry, and recent research has found that seminal microflora may play a role in sperm quality. This study identified correlations between the presence of certain bacteria families and sperm motility parameters, providing new insights for infertility treatment.
Article
Environmental Sciences
Guanxiang Yuan, Yue Ma, Yuxing Zeng, Haibin Pan, Peiyi Liu, Yu Liu, Guihua Liu, Jinquan Cheng, Yinsheng Guo
Summary: The study found that low-level TCS exposure may have limited effects on male semen quality, potentially inducing some fluctuations.Mechanistic studies on low levels of exposure are needed.
ENVIRONMENTAL POLLUTION
(2022)
Article
Urology & Nephrology
Catherine McMartin, Philippe Lehouillier, Jonathan Cloutier, Narcisse Singbo, Michel Labrecque
Summary: The study evaluated the relationship between sperm concentration and motility in post-vasectomy semen analysis. It was found that the proportion of motile sperm decreased with lower sperm concentrations. Among patients with less than 1 million, 250,000, and 100,000 sperm/mL at the first post-vasectomy semen analysis, the proportion of motile sperm was very low.
JOURNAL OF UROLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Dilip Kumar Mandal, Mahesh Kumar, Shrikant Tyagi
Summary: The pelvic linear type traits have a significant impact on the reproductive ability, semen quality, and semen production of bulls, especially the pelvic triangle area. Bulls with larger pelvic triangle areas produce lower-quality semen. Age has a significant influence on pelvic dimensions.
REPRODUCTION IN DOMESTIC ANIMALS
(2022)
Article
Cell Biology
Francesco Manfrevola, Bruno Ferraro, Carolina Sellitto, Domenico Rocco, Silvia Fasano, Riccardo Pierantoni, Rosanna Chianese
Summary: The study reveals the important role of circular RNAs in human asthenozoospermia, involved in regulating the expression of genes related to sperm motility through competitive endogenous RNA networks.
Article
Obstetrics & Gynecology
Ido Feferkorn, Liat Azani, Einav Kadour-Peero, Ranit Hizkiyahu, Guy Shrem, Mali Salmon-Divon, Michael H. Dahan
Summary: Significant geographic variations in sperm parameters were found in this study, suggesting the importance of considering regional reference ranges based on local experience and treatment outcomes.
FERTILITY AND STERILITY
(2022)
Article
Andrology
Yana Aznavour, Felipe Navarrete, Jad Badreddine, Paul H. G. Simon, Vrushab Gowda, Stephen Rhodes, Ramy Abou Ghayda
Summary: This study evaluated the relationship between regional geography and sperm parameters in American men. A cohort of 5,822 men from six different regions of the United States were enrolled. The results showed regional differences in sperm concentration, motility, and total sperm count, with the West and Southwest regions displaying lower values compared to the Midwest and Northeast regions. Men from the Southeast and Southwest regions were more likely to have oligozoospermia.
WORLD JOURNAL OF MENS HEALTH
(2023)
Article
Environmental Sciences
Lina Xiao, Qiling Wang, Haobo Ni, Ting Xu, Qinghui Zeng, Xiaolin Yu, Haisheng Wu, Pi Guo, Qingying Zhang, Xinzong Zhang
Summary: This study investigated the association between ambient temperature variability exposure and sperm quality. The results showed that exposure to temperature variability was significantly associated with a decline in sperm counts, particularly during the early stages of sperm development. However, no significant association was found between temperature variability and sperm motility.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Andrology
Jonatan Axelsson, Christian H. Lindh, Aleksander Giwercman
Summary: This study found no association between nicotine and PAH exposure biomarkers and sperm DNA fragmentation index (DFI) in young men.
Article
Andrology
Agnes Kimblad, Gustav Ollvik, Christian H. Lindh, Jonatan Axelsson
Summary: This study investigated the differences in reproductive parameters between users and non-users of snus in Swedish men. The results showed that snus use was associated with lower total sperm count and higher testosterone levels.
Article
Public, Environmental & Occupational Health
Jens Peter Ellekilde Bonde, Lea Sell, Esben Meulengracht Flachs, David Coggon, Maria Albin, Karen Marieke Oude Hengel, Henrik Kolstad, Ingrid Sivesind Mehlum, Vivi Schlunssen, Svetlana Solovieva, Kjell Toren, Kristina Jakobsson, Christel Nielsen, Kerstin Nilsson, Lars Rylander, Kajsa Ugelvig Petersen, Sandra Sogaard Tottenborg
Summary: This study quantifies the occupational risk of COVID-19-related hospital admission in Denmark during 2020-2021 and finds that employees in healthcare, social care, and transportation occupations are at substantially increased risk. The study suggests the need to revisit safety measures and precautions in the workplace during the current and forthcoming pandemics.
SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH
(2023)
Article
Public, Environmental & Occupational Health
Jens Peter Ellekilde Bonde, Lea Sell, Johan Hoy Jensen, Luise Molenberg Begtrup, Esben Meulengracht Flachs, Kristina Jakobsson, Christel Nielsen, Kerstin Nilsson, Lars Rylander, Kajsa Ugelvig Petersen, Sandra Sogaard Tottenborg
Summary: During the COVID-19 pandemic in Denmark, healthcare employees were partially protected against occupational transmission of SARS-CoV-2, while other sectors still had an elevated risk, indicating a need for revisiting preventive measures.
SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH
(2022)
Article
Public, Environmental & Occupational Health
Jens Peter Ellekilde Bonde, Luise Moelenberg Begtrup, Johan Hoy Jensen, Esben Meulengracht Flachs, Vivi Schlunssen, Henrik A. Kolstad, Kristina Jakobsson, Christel Nielsen, Kerstin Nilsson, Lars Rylander, Andreas Vilhelmsson, Kajsa Kirstine Ugelvig Petersen, Sandra Soegaard Toettenborg
Summary: This study examines the incidence of SARS-CoV-2 infection by occupational group based on real-time PCR tests. The results show that certain healthcare and other occupations have a risk of infection, although the relative risk is low. This highlights the need for preventive measures to reduce the risk of infection.
OCCUPATIONAL AND ENVIRONMENTAL MEDICINE
(2023)
Article
Public, Environmental & Occupational Health
J. P. E. Bonde, L. M. Begtrup, J. H. Jensen, E. M. Flachs, K. Jakobsson, C. Nielsen, K. Nilsson, L. Rylander, A. Vilhelmsson, K. U. Petersen, S. S. Tottenborg
Summary: This study aims to investigate whether foreign-born workers in Denmark have a different occupational risk of COVID-19 compared to native-born employees. The results indicate that male workers born in Eastern Europe are more likely to work in high-risk occupations and have a higher risk of COVID-19-related hospital admission.
OCCUPATIONAL MEDICINE-OXFORD
(2023)
Article
Multidisciplinary Sciences
Gunilla Malm, Christian Lindh, Stefan Hansson, Karin Kaellen, Johan Malm, Lars Rylander
Summary: This case-control study in Sweden found that low serum vitamin D concentrations in early pregnancy may be a risk factor for the development of preeclampsia, particularly in cases that are early-onset and/or born small-for-gestational age (SGA).
Article
Public, Environmental & Occupational Health
Jens Peter Ellekilde Bonde, Luise Molenberg Begtrup, David Coggon, Johan Hoy Jensen, Esben Meulengracht Flachs, Kristina Jakobsson, Christel Nielsen, Kerstin Nilsson, Lars Rylander, Andreas Vilhelmsson, Kajsa Ugelvig Petersen, Sandra Sogaard Tottenborg
Summary: This study aimed to assess the risk of COVID-19-related hospital admission among spouses in Denmark living with partners in at-risk occupations. The study found a significantly increased risk of hospital admission among spouses with partners in high-risk occupations compared to those in low-risk occupations. This highlights the importance of implementing preventive measures at the workplace and utilizing effective vaccines in future outbreaks.
SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH
(2023)
Article
Environmental Sciences
Andreas Vilhelmsson, Lars Rylander, Anna Joud, Christian H. Lindh, Kristina Mattsson, Zeyan Liew, Pengfei Guo, Beate Ritz, Karin Kallen, Jesse D. Thacher
Summary: This study investigated the association between prenatal exposure to per- and polyfluoroalkyl substances (PFAS) and cerebral palsy (CP) in Swedish children. The results showed a positive association between PFAS exposure and CP in preterm infants, but no consistent evidence of associations in the overall group. Further research is needed to explore this issue.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Ellen Malm, Andreas Vilhelmsson, Hannah Hogfeldt, Isabelle Deshayes, Karin Kallen, Stefan R. Hansson, Christian H. Lindh, Lars Rylander
Summary: This study investigated the association between maternal PFAS levels in early pregnancy and the risk of SGA birth. The overall results showed no significant association between elevated PFAS concentrations and SGA birth risk, except for a subgroup of women of Nordic origin where PFHxS was significantly associated with SGA birth risk.
Article
Environmental Sciences
Matilda Ebel, Lars Rylander, Tony Fletcher, Kristina Jakobsson, Christel Nielsen
Summary: This study investigated the association between high levels of PFAS exposure and pregnancy complications, and found no evidence of increased risk of gestational hypertension, preeclampsia, or gestational diabetes.
ENVIRONMENTAL RESEARCH
(2023)
Meeting Abstract
Environmental Sciences
Agnes Kimblad, Gustav Ollvik, Christian H. Lindh, Jonatan Axelsson
ENVIRONMENTAL AND MOLECULAR MUTAGENESIS
(2022)
Meeting Abstract
Environmental Sciences
Jonatan Axelsson, Jedidah Carlson, Sasha Golubeva, Jake Higgins, Thomas Smith, Fang Yin Lo, Richard Pilsner, Jesse Salk, Francesco Marchetti, Carole Yauk
ENVIRONMENTAL AND MOLECULAR MUTAGENESIS
(2022)
Meeting Abstract
Environmental Sciences
Mathia Colwell, Jonatan Axelsson, Kenichi Masumura
ENVIRONMENTAL AND MOLECULAR MUTAGENESIS
(2022)
Article
Environmental Sciences
Viktor Lu, Oscar Svensjo, Jonatan Axelsson
Summary: This study found an inverse association between BMI and sperm DNA fragmentation index (DFI) in men from the general population. Lower levels of estradiol were associated with higher DFI. Additionally, high estradiol levels were protective for sperm DNA integrity, especially in men with lower testosterone levels.
ENVIRONMENTAL AND MOLECULAR MUTAGENESIS
(2022)