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https://www.readbyqxmd.com/read/29771035/-analysis-of-clinical-characteristics-of-141-patients-with-postviral-olfactory-dysfunction
#1
J Tian, Y X Wei, L Li, Z F Sun, B Q Wang
Objective: The aim of this study is to investigate the clinical features of the patients with postviral olfactory dysfunction (PVOD). Method: Clinical information of 141 consecutive outpatients with PVOD were collected and analyzed based on a questionnaire, including age, gender, months of onset, and symptoms. Sniffin'Sticks Test was used as a psychophysical olfactory test to evaluate olfactory function. Result: Retrospective analysis of 141 patients with PVOD, the male to female ratio of patients was 1.0:2...
May 20, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29732168/endocrine-disrupting-chemicals-epigenetics-and-skeletal-system-dysfunction-exploration-of-links-using-bisphenol-a-as-a-model-system
#2
Frances Xin, Lauren M Smith, Martha Susiarjo, Marisa S Bartolomei, Karl J Jepsen
Early life exposures to endocrine-disrupting chemicals (EDCs) have been associated with physiological changes of endocrine-sensitive tissues throughout postnatal life. Although hormones play a critical role in skeletal growth and maintenance, the effects of prenatal EDC exposure on adult bone health are not well understood. Moreover, studies assessing skeletal changes across multiple generations are limited. In this article, we present previously unpublished data demonstrating dose-, sex-, and generation-specific changes in bone morphology and function in adult mice developmentally exposed to the model estrogenic EDC bisphenol A (BPA) at doses of 10 μg (lower dose) or 10 mg per kg bw/d (upper dose) throughout gestation and lactation...
April 2018: Environmental Epigenetics
https://www.readbyqxmd.com/read/29666437/increasing-thermal-stress-for-tropical-coral-reefs-1871-2017
#3
J M Lough, K D Anderson, T P Hughes
Tropical corals live close to their upper thermal limit making them vulnerable to unusually warm summer sea temperatures. The resulting thermal stress can lead to breakdown of the coral-algal symbiosis, essential for the functioning of reefs, and cause coral bleaching. Mass coral bleaching is a modern phenomenon associated with increases in reef temperatures due to recent global warming. Widespread bleaching has typically occurred during El Niño events. We examine the historical level of stress for 100 coral reef locations with robust bleaching histories...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29559547/thermal-strategies-vary-with-life-history-stage
#4
Manuela Truebano, Phillip Fenner, Oliver Tills, Simon D Rundle, Enrico L Rezende
With both global surface temperatures and the incidence and intensity of extreme temperature events projected to increase, the assessment of species' sensitivity to chronic and acute changes in temperature has become crucial. Sensitivity predictions are based predominantly on adult responses, despite the fact that early life stages may be more vulnerable to thermal challenge. Here, we compared the sensitivity of different life history stages of the intertidal gastropod Littorina obtusata using thermal death time curves, which incorporate the intensity and duration of heat stress, and used these to calculate upper critical thermal limits (CTmax ) and sensitivity to temperature change ( z )...
April 20, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29534873/durability-of-flexible-ureteroscopes-a-prospective-evaluation-of-longevity-the-factors-that-affect-it-and-damage-mechanisms
#5
Jaap D Legemate, Guido M Kamphuis, Jan Erik Freund, Joyce Baard, Stefano P Zanetti, Michele Catellani, Harry W Oussoren, Jean J de la Rosette
BACKGROUND: Flexible ureteroscopy is an established treatment modality for evaluating and treating abnormalities in the upper urinary tract. Reusable ureteroscope (USC) durability is a significant concern. OBJECTIVE: To evaluate the durability of the latest generation of digital and fiber optic reusable flexible USCs and the factors affecting it. DESIGN, SETTING, PARTICIPANTS: Six new flexible USCs from Olympus and Karl Storz were included...
March 10, 2018: European Urology Focus
https://www.readbyqxmd.com/read/29524667/composite-measures-of-watershed-health-from-a-water-quality-perspective
#6
Ganeshchandra Mallya, Mohamed Hantush, Rao S Govindaraju
Water quality data at gaging stations are typically compared with established federal, state, or local water quality standards to determine if violations (concentrations of specific constituents falling outside acceptable limits) have occurred. Based on the frequency and severity of water quality violations, risk metrics such as reliability, resilience, and vulnerability (R-R-V) are computed for assessing water quality-based watershed health. In this study, a modified methodology for computing R-R-V measures is presented, and a new composite watershed health index is proposed...
May 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29465973/impact-of-daily-variable-temperatures-in-life-history-traits-of-tropical-anurans
#7
Manuel Hernando Bernal-Bautista, Jorge Luis Turriago-González, Francisco Antonio Villa-Navarro
Anuran embryos and tadpoles are daily exposed to wide thermal variations in their ponds, with maximum temperatures at midday. The aim of this research was to study the impact of three daily variable thermal environments (with maximum experimental temperatures between 10:00 and 16:00 hours), on the survival, developmental time and body size of metamorphs of four tropical anuran species from lowland habitats in Colombia. A total of 50 embryos (Gosner stage ten) to metamorphosis (Gosner stage 46) of Rhinella humboldti, Hypsiboas crepitans and Engystomops pustulosus were exposed to each one of the three daily variable temperature treatments: high temperature (mean = 27...
March 2017: Revista de Biología Tropical
https://www.readbyqxmd.com/read/29420657/ecological-traps-in-shallow-coastal-waters-potential-effect-of-heat-waves-in-tropical-and-temperate-organisms
#8
Catarina Vinagre, Vanessa Mendonça, Rui Cereja, Francisca Abreu-Afonso, Marta Dias, Damián Mizrahi, Augusto A V Flores
Mortality of fish has been reported in tide pools during warm days. That means that tide pools are potential ecological traps for coastal organisms, which happen when environmental changes cause maladaptive habitat selection. Heat-waves are predicted to increase in intensity, duration and frequency, making it relevant to investigate the role of tide pools as traps for coastal organisms. However, heat waves can also lead to acclimatization. If organisms undergo acclimatization prior to being trapped in tide pools, their survival chances may increase...
2018: PloS One
https://www.readbyqxmd.com/read/29360116/responses-of-deposition-and-bioaccumulation-in-the-great-lakes-region-to-policy-and-other-large-scale-drivers-of-mercury-emissions
#9
J A Perlinger, N R Urban, A Giang, N E Selin, A N Hendricks, H Zhang, A Kumar, S Wu, V S Gagnon, H S Gorman, E S Norman
Mercury (Hg) emissions pose a global problem that requires global cooperation for a solution. However, neither emissions nor regulations are uniform world-wide, and hence the impacts of regulations are also likely to vary regionally. We report here an approach to model the effectiveness of regulations at different scales (local, regional, global) in reducing Hg deposition and fish Hg concentrations in the Laurentian Great Lakes (GL) region. The potential effects of global change on deposition are also modeled...
January 24, 2018: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29354258/leaf-thermotolerance-in-dry-tropical-forest-tree-species-relationships-with-leaf-traits-and-effects-of-drought
#10
Aniruddh Sastry, Anirban Guha, Deepak Barua
Understanding how tropical trees will respond to extreme temperatures and drought is essential to predict how future increases in the severity, frequency and duration of extreme climatic events will affect tropical systems. In this study, we investigated leaf thermotolerance by quantifying the temperatures that resulted in a 50 % decrease in photosystem II function (T50 ) in experimentally grown saplings of 12 tree species from a seasonally dry tropical forest. We examined the relationship of thermotolerance with leaf functional traits and photosynthetic rates...
February 2018: AoB Plants
https://www.readbyqxmd.com/read/29258769/calcium-and-vitamin-d-in-human-health-hype-or-real
#11
REVIEW
Sunil J Wimalawansa, Mohammed S Razzaque, Nasser M Al-Daghri
The incidence and prevalence of vitamin D deficiency are increasing worldwide. It is estimated that over 50% of the world's population have low vitamin D (i.e., hypovitaminosis D; serum levels below 30 ng/mL). In vitamin D inadequacy, human physiological systems work inefficiently. In humans, 80% of the vitamin D is synthesized in the presence of ultraviolet rays from sunlight; for the rest, we rely on diet and nowadays, supplements. The latter becomes important when one is exposed to less than optimal amounts of sunlight, inability to generate vitamin D in the skin efficiently, and/or having conditions that lead to decreased intestinal absorption or increased catabolism of vitamin D...
December 16, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29222047/clown-knifefish-chitala-ornata-oxygen-uptake-and-its-partitioning-in-present-and-future-temperature-environments
#12
Dang Diem Tuong, Tran Bao Ngoc, Vo Thi Nhu Huynh, Do Thi Thanh Huong, Nguyen Thanh Phuong, Tran Ngoc Hai, Tobias Wang, Mark Bayley
It has been argued that tropical ectotherms are more vulnerable to the projected temperature increases than their temperate relatives, because they already live closer to their upper temperature limit. Here we examine the effects of a temperature increase in environmental temperature to 6°C above the present day median temperature (27°C) in the freshwater air-breathing fish Chitala ornata, on aspects of its respiratory physiology in both normoxia and in hypoxia. We found no evidence of respiratory impairment with elevated temperature...
February 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29182729/effects-of-opioids-given-to-facilitate-mechanical-ventilation-on-sleep-apnea-after-extubation-in-the-intensive-care-unit
#13
Fanny P Timm, Sebastian Zaremba, Stephanie D Grabitz, Hassan N Farhan, Stefanie Zaremba, Elizabeth Siliski, Christina H Shin, Sandra Muse, Sabine Friedrich, James E Mojica, Tobias Kurth, Satya-Krishna Ramachandran, Matthias Eikermann
Study Objectives: Following extubation in the intensive care unit (ICU), upper airway (UA) edema and respiratory depressants may promote UA dysfunction. We tested the hypothesis that opioids increase the risk of sleep apnea early after extubation. Methods: Fifty-six ICU patients underwent polysomnography the night after extubation. Airflow limitation during wakefulness was identified using bedside spirometry. Correlation and ordinal regression analyses were used to quantify the effects of preextubation opioid dose on postextubation apnea-hypopnea index (AHI) and severity of sleep apnea and whether or not inspiratory airway obstruction (ratio of maximum expiratory and inspiratory airflows at 50% of vital capacity [MEF50/MIF50] ≥ 1) during wakefulness predicts airway obstruction during sleep...
January 1, 2018: Sleep
https://www.readbyqxmd.com/read/29166701/when-is-protection-from-impact-needed-for-the-face-as-well-as-the-eyes-in-occupational-environments
#14
Stephen J Dain, Rose Huang, Aimee Tiao, B Ralph Chou
BACKGROUND: The most commonly identified reason for requiring or using occupational eye and face protection is for protection against flying objects. Standards vary on what risk may require protection of the eyes alone and what requires protection for the whole face. Information on the minimum energy transfer for face damage to occur is not well-established. METHODS: The heads of pigs were used as the common model for human skin. A 6 mm steel ball projected at velocities between 45 and 135 m/s was directed at the face area...
November 22, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29122426/anatomical-factors-contributing-to-radial-nerve-excursion-at-the-brachium-a-cadaveric-study
#15
Wayne A Chen, T David Luo, Michael D Wigton, Zhongyu Li
PURPOSE: The radial nerve appears to be more vulnerable to injury in the brachium than the median and ulnar nerves. The underlying mechanism for this increased vulnerability is not well explained. We hypothesize that the radial nerve has less excursion than the median and ulnar nerves because it is anatomically tethered by the lateral intermuscular septum (LIS) and that elbow positioning and LIS release will improve its excursion. METHODS: Eight paired fresh-frozen cadaveric upper extremity specimens were used...
March 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29108382/clinicopathologic-features-and-prognostic-factors-for-patients-with-colorectal-cancer-who-are-75-years-and-older
#16
Mingfang Zhao, Hans Liu, Yanqing Tang, Xin Meng, Jun Yu, Qi Wang, Qiao Zhou, Sean X Leng, Haiyan Zhang
Colorectal cancer (CRC) is common and can be considered as a disease of older adults. About one half of the cases were diagnosed in patients over 70 years of age. Decision-making about treatment for these older patients can be complicated by age-related physiological changes, impaired functional status, limited social support, and comorbidities. Many trials excluded patients using an upper limit of 75 years of age. Little is known about prognostic factors in patients who are over this age limit. In this study, we conducted an analysis in the Surveillance, Epidemiology and End Results (SEER) database to identify specific clinicopathologic features and prognostic factors for these vulnerable cancer patients (N= 293,616)...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29037370/modeling-warming-predicts-a-physiological-threshold-for-the-extinction-of-the-living-fossil-frog-calyptocephalella-gayi
#17
Marcela A Vidal, Francisco Novoa-Muñoz, Enrique Werner, Cristian Torres, Ricardo Nova
Global climate change will have a greater impact on ectotherms in tropical and subtropical communities than at higher latitudes, because ambient temperatures are closer to the upper thermal limits of species. Amphibian species are highly dependent on external weather conditions, and the effect of global warming on these has been evaluated recently. The Great Chilean frog (Calyptocephalella gayi) is an endemic, monotypic species and genus whose conservation status is considered Vulnerable because of high extraction pressure for human consumption, lack of regulatory measures and comprehension by its consumers...
October 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29035774/facial-dog-bite-injuries-in-children-a-case-report
#18
Alessandro Leite Cavalcanti, Edgleys Porto, Bruno Ferreira Dos Santos, Christiane Leite Cavalcanti, Alidianne Fábia Cabral Cavalcanti
INTRODUCTION: Dog bites are common and can affect victims of different ages, from children to the elderly. Injuries are usually located in different body regions, including head and face. The treatment of choice for injuries is the suture of the lesion, accompanied by antibiotic therapy and tetanus and anti-rabies vaccination. PRESENTATION OF CASE: An 11-year-old male black patient was admitted to the Surgery and Maxillo-Facial Traumatology Service, on an urgent basis, victim of domestic animal aggression (dog biting)...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28991185/comparison-of-health-risk-assessments-of-heavy-metals-and-as-in-sewage-sludge-from-wastewater-treatment-plants-wwtps-for-adults-and-children-in-the-urban-district-of-taiyuan-china
#19
COMPARATIVE STUDY
Baoling Duan, Wuping Zhang, Haixia Zheng, Chunyan Wu, Qiang Zhang, Yushan Bu
Abstract : To compare the human health risk of heavy metals and As in sewage sludge between adults and children, samples were collected from five wastewater treatment plants (WWTPs) located in the urban district of Taiyuan, the capital of Shanxi. Heavy metals and As in sewage sludge can be ranked according to the mean concentration in the following order: Cu > Cr > Zn > Pb > As > Hg > Cd. Compared with the concentration limit set by different countries, the heavy metals contents in sewage sludge were all within the standard limits, except for the content of As, which was higher than the threshold limit established by Canada...
October 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28943009/midterm-and-long-term-follow-up-in-competitive-athletes-undergoing-thoracic-outlet-decompression-for-neurogenic-thoracic-outlet-syndrome
#20
William Shutze, Brad Richardson, Ryan Shutze, Kimberly Tran, Allen Dao, Gerald O Ogola, Allan Young, Greg Pearl
BACKGROUND: Neurogenic thoracic outlet syndrome (NTOS) results from compression of the brachial plexus by the clavicle, first rib, and scalene muscles and may develop secondary to repetitive motion of the upper extremity. Athletes routinely perform repetitive motions, and sports requiring significant arm and shoulder use may put the participant at increased risk for NTOS. Competitive athletes who develop NTOS may require first rib resection and scalenectomy (FRRS) for symptomatic relief...
December 2017: Journal of Vascular Surgery
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