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https://www.readbyqxmd.com/read/28816924/treatment-of-premenstrual-breakthrough-of-depression-with-adjunctive-oral-contraceptive-pills-compared-with-placebo
#1
Whitney Peters, Marlene P Freeman, Semmie Kim, Lee S Cohen, Hadine Joffe
PURPOSE/BACKGROUND: Two-thirds of women with depressive disorders report reemergence of depression premenstrually, or premenstrual exacerbation (PME), despite effective treatment of the underlying mood disorder during the remainder of the cycle. There is a paucity of studies that rigorously assess treatments targeting PME. Open-label data suggest that augmentation of antidepressants with the oral contraceptive pill (OCP) drospirenone and ethinyl estradiol (DRSP/EE) improves depressive symptoms that break through treatment premenstrually...
August 15, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28806676/occurrence-and-air-soil-exchange-of-organochlorine-pesticides-and-polychlorinated-biphenyls-at-a-cawnet-background-site-in-central-china-implications-for-influencing-factors-and-fate
#2
Lingxi Zhan, Tian Lin, Zuwu Wang, Zhineng Cheng, Gan Zhang, Xiaopu Lyu, Hairong Cheng
Ambient air and soil samples were collected between March 2012 and March 2013 at Jinsha, a regional background site in central China, to measure the concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). The average concentrations of total OCPs and total PCBs were 191 ± 107 and 39.4 ± 27.1 pg/m(3) in air (gaseous and particulate phase) and 0.585 ± 0.437 and 0.083 ± 0.039 ng/g in soil, respectively. The higher concentrations of p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT) and p,p'-DDT/p,p'-DDE ratios in the soil indicated recent p,p'-DDT input to the soil...
August 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28799210/whole-brain-arteriography-and-venography-using-improved-velocity-selective-saturation-pulse-trains
#3
Wenbo Li, Feng Xu, Michael Schär, Jing Liu, Taehoon Shin, Yansong Zhao, Peter C M van Zijl, Bruce A Wasserman, Ye Qiao, Qin Qin
PURPOSE: To develop velocity-selective (VS) MR angiography (MRA) protocols for arteriography and venography with whole-brain coverage. METHODS: Tissue suppression using velocity-selective saturation (VSS) pulse trains is sensitive to radiofrequency field (B1 +) inhomogeneity. To reduce its sensitivity, we replaced the low-flip-angle hard pulses in the VSS pulse train with optimal composite (OCP) pulses. Additionally, new pulse sequences for arteriography and venography were developed by placing spatially selective inversion pulses with a delay to null signals from either venous or arterial blood...
August 10, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28795311/the-rise-of-female-sterilization-a-closer-look-at-colombia
#4
Beatriz M Folch, Sarah Betstadt, Dongmei Li, Natalie Whaley
Objective In the 1970s, OCPs and IUDs were the most popular contraceptive methods in Colombia. According to data from the most recent Demographic and Health Survey (DHS), sterilization has become the most common form of birth control in Colombia. This study aims to examine the characteristics of Colombian women desiring long-acting contraception. Methods This study uses the 2005 and 2010 Colombian DHS dataset. Women who choose long-acting contraception were divided into those using female sterilization and those using long-acting reversible contraception (LARC)...
August 9, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28780637/selected-organochlorines-in-human-blood-and-urine-in-the-south-of-the-russian-far-east
#5
Vasiliy Yu Tsygankov, Nadezhda K Khristoforova, Olga N Lukyanova, Margarita D Boyarova, Pavel F Kiku, Marina V Yarygina
The trace OCP concentrations, such as α-, β-, and γ-HCH, DDT and its metabolites (DDD and DDE) in blood and urine of residents from the south of the Russian Far East was revealed. A large range of OCPs was found in the urine: α- and γ-isomers of HCH, DDT and DDE. The only β-HCH was detected in the blood; this indicates its persistence and the difficulty of excretion this substance from the organism. The total trace OCP concentration, found in the biological fluids of residents of the south of the Russian Far East, providing further evidence that these organic contaminants persist in the environment...
August 5, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28772804/osteoblast-cell-response-on-the-ti6al4v-alloy-heat-treated
#6
Mercedes Paulina Chávez-Díaz, María Lorenza Escudero-Rincón, Elsa Miriam Arce-Estrada, Román Cabrera-Sierra
In an effort to examine the effect of the microstructural changes of the Ti6Al4V alloy, two heat treatments were carried out below (Ti6Al4V800) and above (Ti6Al4V1050) its β-phase transformation temperature. After each treatment, globular and lamellar microstructures were obtained. Saos-2 pre-osteoblast human osteosarcoma cells were seeded onto Ti6Al4V alloy disks and immersed in cell culture for 7 days. Electrochemical assays in situ were performed using OCP and EIS measurements. Impedance data show a passive behavior for the three Ti6Al4V alloys; additionally, enhanced impedance values were recorded for Ti6Al4V800 and Ti6Al4V1050 alloys...
April 23, 2017: Materials
https://www.readbyqxmd.com/read/28772772/the-passive-film-growth-mechanism-of-new-corrosion-resistant-steel-rebar-in-simulated-concrete-pore-solution-nanometer-structure-and-electrochemical-study
#7
Jin-Yang Jiang, Danqian Wang, Hong-Yan Chu, Han Ma, Yao Liu, Yun Gao, Jinjie Shi, Wei Sun
An elaborative study was carried out on the growth mechanism and properties of the passive film for a new kind of alloyed corrosion-resistant steel (CR steel). The passive film naturally formed in simulated concrete pore solutions (pH = 13.3). The corrosion resistance was evaluated by various methods including open circuit potential (OCP), linear polarization resistance (LPR) measurements, and electrochemical impedance spectroscopy (EIS). Meanwhile, the 2205 duplex stainless steel (SS steel) was evaluated for comparison...
April 14, 2017: Materials
https://www.readbyqxmd.com/read/28772152/long-term-time-trends-in-human-intake-of-pops-in-the-czech-republic-indicate-a-need-for-continuous-monitoring
#8
Katarína Bányiová, Milena Černá, Ondřej Mikeš, Klára Komprdová, Anežka Sharma, Tenzing Gyalpo, Pavel Čupr, Martin Scheringer
Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) from the group of persistent organic pollutants are detected in human tissues years or even decades after their ban. Exposure to PCBs and OCPs can pose risks to human health. In the present study, we calculated the daily intakes of PCBs and OCPs in the Czech population and investigated the long-term trends of human exposure to POPs. Data on POP concentrations from a 16-year period of breast-milk monitoring were used. A toxicokinetic model with consideration of compound-specific elimination half-lives was used to calculate the mothers' daily intake of PCBs and OCPs representing the intake of POPs by all exposure routes...
July 31, 2017: Environment International
https://www.readbyqxmd.com/read/28767674/versatile-ion-s5xl-sequencer-for-targeted-next-generation-sequencing-of-solid-tumors-in-a-clinical-laboratory
#9
Meenakshi Mehrotra, Dzifa Yawa Duose, Rajesh R Singh, Bedia A Barkoh, Jawad Manekia, Michael A Harmon, Keyur P Patel, Mark J Routbort, L Jeffrey Medeiros, Ignacio I Wistuba, Rajyalakshmi Luthra
BACKGROUND: Next generation sequencing based tumor tissue genotyping involves complex workflow and a relatively longer turnaround time. Semiconductor based next generation platforms varied from low throughput Ion PGM to high throughput Ion Proton and Ion S5XL sequencer. In this study, we compared Ion PGM and Ion Proton, with a new Ion S5XL NGS system for workflow scalability, analytical sensitivity and specificity, turnaround time and sequencing performance in a clinical laboratory. METHODS: Eighteen solid tumor samples positive for various mutations as detected previously by Ion PGM and Ion Proton were selected for study...
2017: PloS One
https://www.readbyqxmd.com/read/28764122/depth-distribution-possible-sources-and-toxic-risk-assessment-of-organochlorine-pesticides-ocps-in-different-river-sediment-cores-affected-by-urbanization-and-reclamation-in-a-chinese-delta
#10
Wei Wang, Junhong Bai, Guangliang Zhang, Xin Wang, Jia Jia, Baoshan Cui, Xinhui Liu
Sediment cores were collected in urban (0-50 cm), rural (0-40 cm) and reclamation-affected river (0-40 cm) environments in the Pearl River Delta. Concentrations of 16 organochlorine pesticides (OCPs) were determined in all collected samples to identify the depth-distribution, possible sources and ecotoxicological risks of OCPs in river sediments affected by urbanization and reclamation in a Chinese delta. The results showed that the top 10 cm of rural river sediments had slightly lower concentrations of the 16 OCPs compared to urban and reclamation-affected rivers, whereas the 30-40 cm sediment layers in the rural river showed higher levels of the 16 OCPs...
July 27, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28763657/organochlorine-pesticides-in-the-indoor-air-of-a-theatre-and-museum-in-the-czech-republic-inhalation-exposure-and-cancer-risk
#11
Eva Holt, Ondřej Audy, Petra Booij, Lisa Melymuk, Roman Prokes, Jana Klánová
Organochlorine pesticides (OCPs) have been used to preserve the integrity of historical buildings or to protect collections of artefacts at potentially large volumes and often without detailed application records. Previous research has focused on the efficiency of remediation at contaminated sites (where identified), as well as improvement of preservation techniques and workplace health and safety. Few studies have assessed the human health risks from occupational exposure to OCPs in buildings of cultural and historical importance...
July 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28761912/risk-factors-accelerating-hypothyroidism-in-pregnant-women-referred-to-health-centers-in-abadan-iran
#12
Mahboobeh Momtazan, Mohammad Javad Mohammadi, Raha Tabahfar, Soraya Rezaee, Aliasghar Valipour, Fatemeh Jamei, Ahmad Reza Yari, Azimeh Karimyan, Sahar Geravandi
The present work contains data obtained during the analysis of pregnant women referred to Abadan Health Centers Organization (Abadan HCO) with confirmed acute hypothyroidism diagnosis. From among all pregnant women referred to Abadan HCO, 600 were chosen consisting of 120 pregnant women from each of the health centers in quintuple areas. In this paper, the effects of family history, occupation, death, abortion, type of diabetes, smoking, lithium consumption, allergy, radiotherapy, ovarian cysts (OC) and oral contraceptive pills (OCP) consumption have been studied (Yassaee et al...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28757218/the-new-norms-of-food-waste-at-the-curb-evidence-based-policy-tools-to-address-benefits-and-barriers
#13
Sally Geislar
Cities around the world are under increasing political pressure to develop organics collection programs (OCP) to curb the flow of food waste into landfills, reduce the associated greenhouse gases, and generate compost or biogas. While OCPs tend to focus on infrastructure, they often overlook the linchpin role that household behavior change plays in the success of OCPs. The current research used a longitudinal field experiment (n=370) to test both the effectiveness of a new curbside OCP and new social innovations intended to stimulate pro-environmental changes in household behavior...
July 27, 2017: Waste Management
https://www.readbyqxmd.com/read/28746851/the-unique-protein-to-protein-carotenoid-transfer-mechanism
#14
Eugene G Maksimov, Nikolai N Sluchanko, Yury B Slonimskiy, Kirill S Mironov, Konstantin E Klementiev, Marcus Moldenhauer, Thomas Friedrich, Dmitry A Los, Vladimir Z Paschenko, Andrew B Rubin
Orange Carotenoid Protein (OCP) is known as an effector and regulator of cyanobacterial photoprotection. This 35 kDa water-soluble protein provides specific environment for blue-green light absorbing keto-carotenoids, which excitation causes dramatic but fully reversible rearrangements of the OCP structure, including carotenoid translocation and separation of C- and N-terminal domains upon transition from the basic orange to photoactivated red OCP form. Although recent studies greatly improved our understanding of the OCP photocycle and interaction with phycobilisomes and the fluorescence recovery protein, the mechanism of OCP assembly remains unclear...
July 25, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28745352/airborne-persistent-toxic-substances-ptss-in-china-occurrence-and-its-implication-associated-with-air-pollution
#15
REVIEW
Pu Wang, Qinghua Zhang, Yingming Li, Julius Matsiko, Ya Zhang, Guibin Jiang
In recent years, China suffered from extensive air pollution due to the rapidly expanding economic and industrial developments. Its severe impact on human health has raised great concern currently. Persistent toxic substances (PTSs), a large group of environmental pollutants, have also received much attention due to their adverse effects on both the ecosystem and public health. However, limited studies have been conducted to reveal the airborne PTSs associated with air pollution at the national scale in China...
August 16, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28741939/influence-of-electric-fields-on-biofouling-of-carbonaceous-electrodes
#16
Soumya Pandit, Sneha Shanbhag, Meagan Mauter, Yoram Oren, Moshe Herzberg
Biofouling commonly occurs on carbonaceous capacitive deionization electrodes in the process of treating natural waters. Although previous work reported the effect of electric fields on bacterial mortality for a variety of medical and engineered applications, the effect of electrode surface properties and the magnitude and polarity of applied electric fields on biofilm development has not been comprehensively investigated. This paper studies the formation of a Pseudomonas aeruginosa biofilm on a Papyex graphite (PA) and a carbon aerogel (CA) in the presence and the absence of an electric field...
August 10, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28732338/toxic-organic-substances-and-marker-compounds-in-size-segregated-urban-particulate-matter-implications-for-involvement-in-the-in%C3%A2-vitro-bioactivity-of-the-extractable-organic-matter
#17
Athanasios Besis, Alexandra Tsolakidou, Dimitra Balla, Constantini Samara, Dimitra Voutsa, Anastasia Pantazaki, Theodora Choli-Papadopoulou, Theodore S Lialiaris
Toxic organic substances and polar organic marker compounds, i.e. polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs) and their nitro-derivatives (N-PAHs), as well as dicarboxylic acids (DCAs) and sugars/sugar anhydrites (S/SAs) were analyzed in size-segregated PM samples (<0.49, 0.49-0.97, 0.97-3 and >3 μm) collected at two urban sites (urban traffic and urban background) during the cold and the warm season...
July 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28731317/air-stable-self-bleaching-electrochromic-device-based-on-viologen-and-ferrocene-containing-triflimide-redox-ionic-liquids
#18
Bruno Gélinas, Dyuman Das, Dominic Rochefort
We demonstrate an electrochromic device with self-bleaching ability that uses ethyl viologen- ([EV](2+)) and ferrocene-based redox ionic liquids ([FcNTf](-)) as the electroactive species. These electroactive compounds are insensitive to atmospheric O2 and H2O in both their oxidized and reduced states once dissolved in a typical ionic liquid electrolyte ([BMIm][NTf2]), allowing for the device to be assembled outside a glovebox without any encapsulation. This device could generate a deep blue color by applying a 2...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28728131/the-distribution-of-organochlorine-pesticides-in-sediments-from-isimangaliso-wetland-park-ecological-risks-and-implications-for-conservation-in-a-biodiversity-hotspot
#19
Archibold Buah-Kwofie, Marc S Humphries
The iSimangaliso Wetland Park World Heritage site, located on the east coast of South Africa, spans ∼3300 km(2) and constitutes the largest protected estuarine environment for hippopotami, crocodiles and aquatic birds in Africa. Given the ecological importance of this site and continued use of organochlorine pesticides (OCPs) in the region, this study focused on the nature, distribution and potential sources of organochlorine contamination within iSimangaliso Wetland Park. OCPs were widely distributed in surface sediment samples obtained from the four main Ramsar wetland systems within the park (Lake St Lucia, Mkhuze, Lake Sibaya and Kosi Bay)...
July 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28720831/minimum-winfree-loop-determines-self-sustained-oscillations-in-excitable-erd%C3%A3-s-r%C3%A3-nyi-random-networks
#20
Yu Qian, Xiaohua Cui, Zhigang Zheng
The investigation of self-sustained oscillations in excitable complex networks is very important in understanding various activities in brain systems, among which the exploration of the key determinants of oscillations is a challenging task. In this paper, by investigating the influence of system parameters on self-sustained oscillations in excitable Erdös-Rényi random networks (EERRNs), the minimum Winfree loop (MWL) is revealed to be the key factor in determining the emergence of collective oscillations...
July 18, 2017: Scientific Reports
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