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Particulate matter and fertility

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https://www.readbyqxmd.com/read/29676634/impact-of-seasonal-winter-air-pollution-on-health-across-the-lifespan-in-mongolia-and-some-putative-solutions
#1
David Warburton, Nicole Warburton, Clarence Wigfall, Ochir Chimedsuren, Delgerzul Lodoisamba, Sereeter Lodoysamba, Badarch Jargalsaikhan
Environmental pollution of the air, water, and soil comprise an increasingly urgent challenge to global health, well-being, and productivity. The impact of environmental pollution arguably has its greatest impact across the lifespan on children, women of childbearing age, and pregnant women and their unborn children, not only because of their vulnerability during development, but also because of their subsequent longevity. Ulaanbaatar, Mongolia, is a highly instructive, perhaps extreme, example of what happens with recent, rapid urbanization...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29659826/association-between-ambient-air-pollution-and-pregnancy-rate-in-women-who-underwent-ivf
#2
S A Choe, Y B Jun, W S Lee, T K Yoon, S Y Kim
STUDY QUESTION: Are the concentrations of five criteria air pollutants associated with probabilities of biochemical pregnancy loss and intrauterine pregnancy in women? SUMMARY ANSWER: Increased concentrations of ambient particulate matter (PM10), nitrogen dioxide (NO2), carbon monoxide (CO) during controlled ovarian stimulation (COS) and after embryo transfer were associated with a decreased probability of intrauterine pregnancy. WHAT IS KNOWN ALREADY: Exposure to high ambient air pollution was suggested to be associated with low fertility and high early pregnancy loss in women...
April 5, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29527192/bacterial-preferences-for-specific-soil-particle-size-fractions-revealed-by-community-analyses
#3
Michael Hemkemeyer, Anja B Dohrmann, Bent T Christensen, Christoph C Tebbe
Genetic fingerprinting demonstrated in previous studies that differently sized soil particle fractions (PSFs; clay, silt, and sand with particulate organic matter (POM)) harbor microbial communities that differ in structure, functional potentials and sensitivity to environmental conditions. To elucidate whether specific bacterial or archaeal taxa exhibit preference for specific PSFs, we examined the diversity of PCR-amplified 16S rRNA genes by high-throughput sequencing using total DNA extracted from three long-term fertilization variants (unfertilized, fertilized with minerals, and fertilized with animal manure) of an agricultural loamy sand soil and their PSFs...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29503771/regenerative-agriculture-merging-farming-and-natural-resource-conservation-profitably
#4
Claire E LaCanne, Jonathan G Lundgren
Most cropland in the United States is characterized by large monocultures, whose productivity is maintained through a strong reliance on costly tillage, external fertilizers, and pesticides (Schipanski et al., 2016). Despite this, farmers have developed a regenerative model of farm production that promotes soil health and biodiversity, while producing nutrient-dense farm products profitably. Little work has focused on the relative costs and benefits of novel regenerative farming operations, which necessitates studying in situ , farmer-defined best management practices...
2018: PeerJ
https://www.readbyqxmd.com/read/29407824/developmental-toxicity-induced-by-pm2-5-through-endoplasmic-reticulum-stress-and-autophagy-pathway-in-zebrafish-embryos
#5
Yun Zhang, Saiyu Li, Juanjuan Li, Liwen Han, Qiuxia He, Rongchun Wang, Ximin Wang, Kechun Liu
The aims of this study were to investigate the mechanism underlying the developmental toxicity of fine particulate matter (PM2.5) and provide a more thorough understanding of the toxicity of PM2.5 in an ecological environment. Zebrafish embryos at 4 h post-fertilization were exposed to PM2.5 at doses of 200, 300, 400, 500, 600 and 800 μg/mL for 120 h. The mortality, hatching rate, morphology score, body length, locomotor capacity, histological changes, antioxidant defense system, leukocyte migration, inflammation-related gene mRNA expression, endoplasmic reticulum stress (ERS) and autophagy were evaluated to study PM2...
January 25, 2018: Chemosphere
https://www.readbyqxmd.com/read/29353799/seasonal-variation-of-semen-parameters-correlates-with-environmental-temperature-and-air-pollution-a-big-data-analysis-over-6-years
#6
Daniele Santi, Elisa Magnani, Marco Michelangeli, Roberto Grassi, Barbara Vecchi, Gioia Pedroni, Laura Roli, Maria Cristina De Santis, Enrica Baraldi, Monica Setti, Tommaso Trenti, Manuela Simoni
BACKGROUND: Male fertility is progressively declining in many developed countries, but the relationship between male infertility and environmental factors is still unclear. OBJECTIVES: To assess the influence of environmental temperature and air pollution on semen parameters, using a big-data approach. METHODS: A big data analysis of parameters related to 5131 men, living in a province of Northern Italy and undergoing semen analyses between January 2010 and March 2016 was performed...
April 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29320903/air-pollution-and-human-sperm-sex-ratio
#7
Michał Radwan, Emila Dziewirska, Paweł Radwan, Lucjusz Jakubowski, Wojciech Hanke, Joanna Jurewicz
The present study was designed to address the hypothesis that exposure to specific air pollutants may impact human sperm Y:X chromosome ratio. The study population consisted of 195 men who were attending an infertility clinic for diagnostic purposes and who had normal semen concentration of 15-300 mln/ml (WHO, 2010). Participants represented a subset of men in a multicenter parent study conducted in Poland to evaluate environmental factors and male fertility. Participants were interviewed and provided a semen sample...
January 1, 2018: American Journal of Men's Health
https://www.readbyqxmd.com/read/29221954/total-particulate-matter-from-cigarette-smoke-disrupts-vascular-development-in-zebrafish-brain-danio-rerio
#8
Andrey Massarsky, G L Prasad, Richard T Di Giulio
Several studies have demonstrated zebrafish as a useful high-throughput in vivo model to study the effects of cigarette smoke on early development. It has been shown previously that exposure of zebrafish to cigarette smoke total particulate matter (TPM) leads to several adverse physiological aberrations, including heart deformities and improper angiogenesis. Consequently, this study investigated the effects of TPM on cardiovascular development in zebrafish that were exposed to increasing concentrations of TPM based upon nicotine content from 6h post fertilization (hpf) up to 72hpf...
January 15, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29179619/urban-fine-particulate-matter-pm2-5-exposure-destroys-blood-testis-barrier-btb-integrity-through-excessive-ros-mediated-autophagy
#9
Yi Wei, Xi-Ning Cao, Xiang-Liang Tang, Lian-Ju Shen, Tao Lin, Da-Wei He, Sheng-De Wu, Guang-Hui Wei
CONTEXT: Blood-testis barrier (BTB), constituted by tight junctions (TJs), adherens junctions and gap junctions, is important for spermatogenesis. PM2.5 is known to impair testicular functions and reproduction. However, its effects on BTB and the underlying mechanisms remain obscure. OBJECTIVE: To investigate the roles of autophagy in BTB toxicity induced by PM2.5. MATERIALS AND METHODS: Sprague-Dawley rats were developmentally exposed to normal saline (NS) or PM2...
May 2018: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/29179160/estimation-of-different-source-contributions-to-sediment-organic-matter-in-an-agricultural-forested-watershed-using-end-member-mixing-analyses-based-on-stable-isotope-ratios-and-fluorescence-spectroscopy
#10
Morgane Derrien, Min-Seob Kim, Giyoung Ock, Seongjin Hong, Jinwoo Cho, Kyung-Hoon Shin, Jin Hur
The two popular source tracing tools of stable isotope ratios (δ13 C and δ15 N) and fluorescence spectroscopy were used to estimate the relative source contributions to sediment organic matter (SeOM) at five different river sites in an agricultural-forested watershed (Soyang Lake watershed), and their capabilities for the source assignment were compared. Bulk sediments were used for the stable isotopes, while alkaline extractable organic matter (AEOM) from sediments was used to obtain fluorescent indices for SeOM...
March 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29136143/time-varying-cycle-average-and-daily-variation-in-ambient-air-pollution-and-fecundability
#11
Carrie J Nobles, Enrique F Schisterman, Sandie Ha, Germaine M Buck Louis, Seth Sherman, Pauline Mendola
STUDY QUESTION: Does ambient air pollution affect fecundability? SUMMARY ANSWER: While cycle-average air pollution exposure was not associated with fecundability, we observed some associations for acute exposure around ovulation and implantation with fecundability. WHAT IS KNOWN ALREADY: Ambient air pollution exposure has been associated with adverse pregnancy outcomes and decrements in semen quality. STUDY DESIGN, SIZE, DURATION: The LIFE study (2005-2009), a prospective time-to-pregnancy study, enrolled 501 couples who were followed for up to one year of attempting pregnancy...
January 1, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29112712/the-protective-role-of-melatonin-in-porcine-oocyte-meiotic-failure-caused-by-the-exposure-to-benzo-a-pyrene
#12
Yilong Miao, Changyin Zhou, Qingyun Bai, Zhaokang Cui, Xiayan ShiYang, Yajuan Lu, Mianqun Zhang, Xiaoxin Dai, Bo Xiong
STUDY QUESTION: Does melatonin restore the benzo(a)pyrene (BaP)-induced meiotic failure in porcine oocytes? SUMMARY ANSWER: Melatonin effectively inhibits the increased reactive oxygen species (ROS) level and apoptotic rate in BaP-exposed porcine oocytes to recover the meiotic failure. WHAT IS KNOWN ALREADY: BaP, a widespread environmental carcinogen found in particulate matter, 2.5 µm or less (PM2.5), has been shown to have toxicity at the level of the reproductive systems...
January 1, 2018: Human Reproduction
https://www.readbyqxmd.com/read/28904021/bap-exposure-causes-oocyte-meiotic-arrest-and-fertilization-failure-to-weaken-female-fertility
#13
Mianqun Zhang, Yilong Miao, Qian Chen, Meng Cai, Wenkang Dong, Xiaoxin Dai, Yajuan Lu, Changyin Zhou, Zhaokang Cui, Bo Xiong
Benzo[a]pyrene (BaP) is a ubiquitous environmental pollutant and carcinogen that is frequently found in particulate matter, with a diameter of ≤2.5 μm (PM2.5). It has been reported to interrupt the normal reproductive system, but the exact molecular basis has not been clearly defined. To understand the underlying mechanisms regarding how BaP exposure disrupts female fertility, we evaluated oocyte quality by assessing the critical regulators and events during oocyte meiotic maturation and fertilization. We found that BaP exposure compromised the mouse oocyte meiotic progression by disrupting normal spindle assembly, chromosome alignment, and kinetochore-microtubule attachment, consequently leading to the generation of aneuploid eggs...
January 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28822787/global-regional-and-national-deaths-prevalence-disability-adjusted-life-years-and-years-lived-with-disability-for-chronic-obstructive-pulmonary-disease-and-asthma-1990-2015-a-systematic-analysis-for-the-global-burden-of-disease-study-2015
#14
(no author information available yet)
BACKGROUND: Chronic obstructive pulmonary disease (COPD) and asthma are common diseases with a heterogeneous distribution worldwide. Here, we present methods and disease and risk estimates for COPD and asthma from the Global Burden of Diseases, Injuries, and Risk Factors (GBD) 2015 study. The GBD study provides annual updates on estimates of deaths, prevalence, and disability-adjusted life years (DALYs), a summary measure of fatal and non-fatal disease outcomes, for over 300 diseases and injuries, for 188 countries from 1990 to the most recent year...
September 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28620855/physicochemical-characteristics-mutagenicity-and-genotoxicity-of-airborne-particles-under-industrial-and-rural-influences-in-northern-lebanon
#15
Pamela N Melki, Frédéric Ledoux, Samer Aouad, Sylvain Billet, Bilal El Khoury, Yann Landkocz, Roula M Abdel-Massih, Dominique Courcot
In this work, the main objectives were to assess the mutagenic and genotoxic effects of fine particulate matter collected in an industrial influenced site in comparison with a non-industrial influenced one (rural site) and to relate the particulate matter (PM) composition to the observed genotoxic effects. At the industrial influenced site, higher concentrations of phosphates, trace metals, and polycyclic aromatic hydrocarbons (PAHs) in particles could be related to the contributions of quarries, fertilizer producer, cement plants, and tires burning...
August 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28584201/ovarian-damages-produced-by-aerosolized-fine-particulate-matter-pm2-5-pollution-in-mice-possible-protective-medications-and-mechanisms
#16
Hui-Fang Gai, Jian-Xiong An, Xiao-Yan Qian, Yong-Jie Wei, John P Williams, Guo-Lan Gao
BACKGROUND: Ambient aerosol fine particulate matter (PM2.5) is associated with male reproductive toxicity in experiments and may have adverse effects in the female. However, studies evaluating the protective effects and precise mechanisms of aspirin, Vitamin C, Vitamin E, or ozone against toxic effects of PM2.5are sparse. This study was conducted to investigate the possible protective effects and mechanisms of aspirin, Vitamin C, Vitamin E, or ozone on fertility in female mice treated with PM2...
June 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28535484/biomonitoring-of-genotoxicity-of-industrial-fertilizer-pollutants-in-aiolopus-thalassinus-orthoptera-acrididae-using-alkaline-comet-assay
#17
Eman A Abdelfattah, Maria Augustyniak, Hesham A Yousef
Phosphate fertilizer industry is considered as one of the main sources of environmental pollutants. Besides solid waste products, e.g. phosphates, sulphates, and heavy metals, also atmospheric pollutants, such as hydrofluoric acid fumes (HF), sulphur dioxide (SO2), nitrogen oxides (NO2), and particulate matter with diameter up to 10 μm (PM10) can be dangerous. Genotoxic effect of these pollutants was monitored by assessing the DNA damage using alkaline comet assay on cells from brain, thoracic muscles and gut of Aiolopus thalassinus collected at three sites (A-C) located at 1, 3, and 6 km away from Abu-Zaabal Company for Fertilizers and Chemical Industries...
September 2017: Chemosphere
https://www.readbyqxmd.com/read/28448928/potential-environmental-impact-of-bioethanol-production-chain-from-fiber-sorghum-to-be-used-in-passenger-cars
#18
Annachiara Forte, Amalia Zucaro, Massimo Fagnano, Angelo Fierro
A life cycle assessment (LCA) was applied to assess the environmental load of a prospective local bioethanol (EtOH) production system in Southern Italy by using lignocellulosic Fiber sorghum (FS) feedstock. A two steps analysis was carried out considering: (i) a "cradle-to-farm gate" LCA to investigate thoroughly the FS cultivation on hilly marginal land and (ii) a "cradle-to-wheels" system boundary encompassing the environmental pressure of the whole EtOH supply-use chain. Primary data related to lignocellulosic biomass production were combined with experimental feedstock conversion processes through advanced second generation technology...
November 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318692/characterization-and-source-identification-of-nitrogen-in-a-riverine-system-of-monsoon-climate-region-china
#19
Jie Yuan, Siyue Li, Xi Han, Qiuyang Chen, Xiaoli Cheng, Quanfa Zhang
There are increasing concerns in nitrogen (N) pollution worldwide, especially in aquatic ecosystems, and thus quantifying its sources in waterways is critical for pollution prevention and control. In this study, we investigated the spatio-temporal variabilities of inorganic N concentration (i.e., NO3 - , NH4 + ) and total dissolved N (TDN) and identified their sources in waters and suspended matters using an isotopical approach in the Jinshui River, a river with a length of 87km in the monsoon-climate region of China...
August 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28050057/aggregate-size-distribution-in-a-biochar-amended-tropical-ultisol-under-conventional-hand-hoe-tillage
#20
Bernard Fungo, Johannes Lehmann, Karsten Kalbitz, Margaret Thionģo, Irene Okeyo, Moses Tenywa, Henry Neufeldt
Biochar (or pyrogenic organic matter) is increasingly proposed as a soil amendment for improving fertility, carbon sequestration and reduction of greenhouse gas emissions. However, little is known about its effects on aggregation, an important indicator of soil quality and functioning. The aim of this study was to assess the effect of Eucalyptus wood biochar (B, pyrolyzed at 550 °C, at 0 or 2.5 t ha(-1)), green manure (T, from Tithonia diversifolia at 0, 2.5 or 5.0 t ha(-1)) and mineral nitrogen (U, urea, at 0, or 120 kg N ha(-1)) on soil respiration, aggregate size distribution and SOC in these aggregate size fractions in a 2-year field experiment on a low-fertility Ultisol in western Kenya under conventional hand-hoe tillage...
January 2017: Soil & Tillage Research
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