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https://www.readbyqxmd.com/read/28101264/ripped-from-the-headlines-using-current-events-and-deliberative-democracy-to-improve-student-performance-in-and-perceptions-of-nonmajors-biology-courses
#1
Heather N Tinsley
Despite the importance of scientific literacy, many foundational science courses are plagued by low student engagement and performance. In an attempt to improve student outcomes, an introductory biology course for nonscience majors was redesigned to present the course content within the framework of current events and deliberative democratic exercises. During each instructional unit of the redesigned course, students were presented with a highly publicized policy question rooted in biological principles and currently facing lawmakers...
December 2016: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28100407/pressure-ulcer-reconstruction-in-patients-with-heterotopic-ossification-after-spinal-cord-injury-a-case-series-and-review-of-literature
#2
REVIEW
Kai Yang, Alexander Graf, James Sanger
Heterotopic ossification (HO) is widely recognized as a common occurrence among patients suffering from traumatic spinal cord injuries (SCI). The exact etiology of HO formation remains unknown. Published medical and surgical management strategies are often plagued with questionable effectiveness and frequent complications. There are minimal publications regarding the management strategies of HO in SCI patients as it pertains to plastic surgery. We present a case series of patients treated at our institution who underwent treatment for pressure ulcers with underlying HO to highlight the vast spectrum of clinical phenotypes present in this population...
December 21, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28092985/plague-and-war-political-breakdown-and-the-spread-of-hiv
#3
Nathan A Paxton
This exploratory data analysis finds a negative relationship between some types of war and HIV prevalence (i.e. as the former increases in intensity, the latter decreases). The study uses a longer time-frame and broader range of countries than similar studies, with explicit differentiation between sub-Saharan African and other developing countries. The study uses a variety of methods for analyzing time-series-cross-section data. These methods serve as both a robustness check for the results as well as a real-world demonstration of common suggestions for TSCS data...
January 16, 2017: Medicine, Conflict, and Survival
https://www.readbyqxmd.com/read/28088139/long-range-interactions-from-the-many-pair-expansion-a-different-avenue-to-dispersion-in-dft
#4
Piotr de Silva, Tianyu Zhu, Troy Van Voorhis
One of the several problems that plague majority of density functional theory calculations is their inability to properly account for long-range correlations giving rise to dispersion forces. The recently proposed many-pair expansion (MPE) [T. Zhu et al., Phys. Rev. B 93, 201108(R) (2016)] is a hierarchy of approximations that systematically corrects any deficiencies of an approximate functional to finally converge to the exact energy. This is achieved by decomposing the total density into a sum of two-electron densities and accounting for successive two-, four-, six-,… electron interactions...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28080997/tackling-emerging-fungal-threats-to-animal-health-food-security-and-ecosystem-resilience
#5
Matthew C Fisher, Neil A R Gow, Sarah J Gurr
Emerging infections caused by fungi have become a widely recognized global phenomenon. Their notoriety stems from their causing plagues and famines, driving species extinctions, and the difficulty in treating human mycoses alongside the increase of their resistance to antifungal drugs. This special issue comprises a collection of articles resulting from a Royal Society discussion meeting examining why pathogenic fungi are causing more disease now than they did in the past, and how we can tackle this rapidly emerging threat to the health of plants and animals worldwide...
December 5, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28078658/the-past-does-matter-a-nursing-perspective-on-post-traumatic-slave-syndrome-ptss
#6
Ejim Sule, Ryan M Sutton, Debbie Jones, Ramel Moore, Imaculata Igbo, Lovell A Jones
Few have reviewed the impact of post traumatic slave syndrome (PTSS) on the issues of inequities, especially as it pertains to mental and physical health. Furthermore, the impact of PTSS on the social determinants of health is an area that has been researched by few investigators. The possibilities that the impact of slavery and/or major stress events in the life of a population can become trans-generational are lost to history. Think about what is taking place in cities around the country and then think about racist socialization (internalized racism) and its impact on our society...
January 11, 2017: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/28077328/dissociation-between-working-memory-performance-and-proactive-interference-control-in-post-traumatic-stress-disorder
#7
Diane Swick, Julien Cayton, Victoria Ashley, And U Turken
Deficits in working memory (WM) and cognitive control processes have been reported in post-traumatic stress disorder (PTSD), in addition to clinical symptoms such as hypervigilance, re-experiencing, and avoidance of trauma reminders. Given the uncontrollable nature of intrusive memories, an important question is whether PTSD is associated with altered control of interference in WM. Some studies also suggest that episodic memory shows a material-specific dissociation in PTSD, with greater impairments in verbal memory and relative sparing of nonverbal memory...
January 7, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28077317/zoonotic-pathogens-in-atlantic-forest-wild-rodents-in-brazil-bartonella-and-coxiella-infections
#8
Tatiana Rozental, Michelle Santos Ferreira, Alexandro Guterres, Maria Angélica Mares-Guia, Bernardo R Teixeira, Jonathan Gonçalves, Cibele Rodrigues Bonvicino, Paulo Sergio D'Andrea, Elba Regina Sampaio de Lemos
Zoonotic pathogens comprise a significant and increasing fraction of all emerging and re-emerging infectious diseases that plague humans. Identifying host species is one of the keys to controlling emerging infectious diseases. From March 2007 until April 2012, we collected a total of 131 wild rodents in eight municipalities of Rio de Janeiro, Brazil. We investigated these rodents for infection with Coxiella burnetii, Bartonella spp. and Rickettsia spp. In total, 22.1% (29/131) of the rodents were infected by at least one pathogen; co-infection was detected in 1...
January 8, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28077183/the-prevalence-of-aphanomyces-astaci-in-invasive-signal-crayfish-from-the-uk-and-implications-for-native-crayfish-conservation
#9
J James, S Nutbeam-Tuffs, J Cable, A Mrugała, N Viñuela-Rodriguez, A Petrusek, B Oidtmann
The crayfish plague agent, Aphanomyces astaci, has spread throughout Europe, causing a significant decline in native European crayfish. The introduction and dissemination of this pathogen is attributed to the spread of invasive North American crayfish, which can act as carriers for A. astaci. As native European crayfish often succumb to infection with A. astaci, determining the prevalence of this pathogen in non-native crayfish is vital to prioritize native crayfish populations for managed translocation. In the current study, 23 populations of invasive signal crayfish (Pacifastacus leniusculus) from the UK were tested for A...
January 12, 2017: Parasitology
https://www.readbyqxmd.com/read/28072543/nanoscale-nucleation-and-growth-of-electrodeposited-lithium-metal
#10
Allen Pei, Guangyuan Zheng, Feifei Shi, Yuzhang Li, Yi Cui
Lithium metal has re-emerged as an exciting anode for high energy lithium-ion batteries due to its high specific capacity of 3,860 mAh g(-1) and lowest electrochemical potential of all known materials. However, lithium has been plagued by the issues of dendrite formation, high chemical reactivity with electrolyte, and infinite relative volume expansion during plating and stripping, which present safety hazards and low cycling efficiency in batteries with lithium metal electrodes. There have been a lot of recent studies on Li metal although little work has focused on the initial nucleation and growth behavior of Li metal, neglecting a critical fundamental scientific foundation of Li plating...
January 10, 2017: Nano Letters
https://www.readbyqxmd.com/read/28068343/the-fleas-siphonaptera-in-iran-diversity-host-range-and-medical-importance
#11
Naseh Maleki-Ravasan, Samaneh Solhjouy-Fard, Jean-Claude Beaucournu, Anne Laudisoit, Ehsan Mostafavi
BACKGROUND: Flea-borne diseases have a wide distribution in the world. Studies on the identity, abundance, distribution and seasonality of the potential vectors of pathogenic agents (e.g. Yersinia pestis, Francisella tularensis, and Rickettsia felis) are necessary tools for controlling and preventing such diseases outbreaks. The improvements of diagnostic tools are partly responsible for an easier detection of otherwise unnoticed agents in the ectoparasitic fauna and as such a good taxonomical knowledge of the potential vectors is crucial...
January 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28063989/upconversion-nanoparticles-mediated-deep-penetrating-photodynamic-therapy-of-killerred
#12
Liuen Liang, Yiqing Lu, Run Zhang, Andrew Care, Tiago A Ortega, Sergey M Deyev, Yi Qian, Andrei V Zvyagin
: The fluorescent protein KillerRed, a new type of biological photosensitizer, is considered as a promising substitute for current synthetic photosensitizes used in photodynamic therapy (PDT). However, broad applications of this photosensitiser in treating deep-seated lesions is challenging due to the limited tissue penetration of the excitation light with the wavelength falling in the visible spectral range. To overcome this challenge, we employ upconversion nanoparticles (UCNPs) that are able to convert deep-penetrating near infrared (NIR) light to green light to excite KillerRed locally, followed by the generation of reactive oxygen species (ROS) to kill tumour cells under centimetre-thick tissue...
January 4, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28056252/-method-and-significance-of-specimens-standardized-pathological-treatment-in-pancreaticoduodenectomy-for-pancreatic-head-cancer
#13
W W Wu, X S Wu, M L Li, X A Wang, H B Liang, Y B Liu
Pancreatic ductal adenocarcinoma is a highly aggressive disease with a grim prognosis. Surgical resection offers the best chance for long-term survival. Negative-margin resection still remains the goal, the influence of margin status on outcomes in pancreatic head carcinoma remains controversial, as conflicting data have been plagued by a lack of standardization in R0 resection and margin definitions, pathologic analysis, and reporting. In contrast to common belief, a high rate of R1 resections in pancreatic cancer is not a marker of low-quality surgery but rather of high-quality pathology...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28054667/yersinia-pestis-halotolerance-illuminates-plague-reservoirs
#14
Maliya Alia Malek, Idir Bitam, Anthony Levasseur, Jérôme Terras, Jean Gaudart, Said Azza, Christophe Flaudrops, Catherine Robert, Didier Raoult, Michel Drancourt
The plague agent Yersinia pestis persists for years in the soil. Two millennia after swiping over Europe and North Africa, plague established permanent foci in North Africa but not in neighboring Europe. Mapping human plague foci reported in North Africa for 70 years indicated a significant location at <3 kilometers from the Mediterranean seashore or the edge of salted lakes named chotts. In Algeria, culturing 352 environmental specimens naturally containing 0.5 to 70 g/L NaCl yielded one Y. pestis Orientalis biotype isolate in a 40 g/L NaCl chott soil specimen...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28052994/local-delivery-of-the-tlr9-ligand-cpg-down-regulates-host-immune-and-inflammatory-responses-ameliorating-established-leishmania-viannia-panamensis-chronic-infection
#15
Allison K Ehrlich, Olga L Fernández, Daniel Rodriguez-Pinto, Tiago M Castilho, Maria J Corral Caridad, Karen Goldsmith-Pestana, Nancy Gore Saravia, Diane McMahon-Pratt
Infection by Leishmania (Viannia) panamensis, the predominant etiologic agent for cutaneous leishmaniasis in Colombia, is characterized by a chronic mixed-inflammatory response. Current treatment options are plagued by toxicity, lengthy treatment regimens and growing evidence of drug resistance. Immunotherapy, modulating the immune system to mount a protective response, may provide an alternate therapeutic approach. We investigated the ability of the TLR9 ligand, CpG, to modulate established disease in the L...
January 4, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28051168/mechanisms-of-yersinia-yopo-kinase-substrate-specificity
#16
Wei Lin Lee, Pavithra Singaravelu, Sheena Wee, Bo Xue, Khay Chun Ang, Jayantha Gunaratne, Jonathan M Grimes, Kunchithapadam Swaminathan, Robert C Robinson
Yersinia bacteria cause a range of human diseases, including yersiniosis, Far East scarlet-like fever and the plague. Yersiniae modulate and evade host immune defences through injection of Yersinia outer proteins (Yops) into phagocytic cells. One of the Yops, YopO (also known as YpkA) obstructs phagocytosis through disrupting actin filament regulation processes - inhibiting polymerization-promoting signaling through sequestration of Rac/Rho family GTPases and by using monomeric actin as bait to recruit and phosphorylate host actin-regulating proteins...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28051131/nitrogen-doped-carbon-derived-from-zif-8-as-a-high-performance-metal-free-catalyst-for-acetylene-hydrochlorination
#17
Songlin Chao, Fang Zou, Fanfan Wan, Xiaobin Dong, Yanlin Wang, Yuxuan Wang, Qingxin Guan, Guichang Wang, Wei Li
Acetylene hydrochlorination is a major industrial technology for manufacturing vinyl chloride monomer in regions with abundant coal resources; however, it is plagued by the use of mercury(II) chloride catalyst. The development of a nonmercury catalyst has been extensively explored. Herein, we report a N-doped carbon catalyst derived from ZIF-8 with both high activity and quite good stability. The acetylene conversion reached 92% and decreased slightly during a 200 h test at 220 °C and atmospheric pressure...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28048972/astaxanthin-improves-cognitive-performance-in-mice-following-mild-traumatic-brain-injury
#18
Xinran Ji, Dayong Peng, Yiling Zhang, Jun Zhang, Yuning Wang, Yuan Gao, Ning Lu, Peifu Tang
[BACKGROUND]: Traumatic brain injury (TBI) produces lasting neurological deficits that plague patients and physicians. To date, there is no effective method to combat the source of this problem. Here, we utilized a mild, closed head TBI model to determine the modulatory effects of a natural dietary compound, astaxanthin (AST). AST is centrally active following oral administration and is neuroprotective in experimental brain ischemia/stroke and subarachnoid hemorrhage (SAH) models. We examined the effects of oral AST on the long-term neurological functional recovery and histological outcomes following moderate TBI in a mice model...
December 31, 2016: Brain Research
https://www.readbyqxmd.com/read/28043589/tuberculosis-in-slaughtered-cattle-and-workers-in-some-abattoirs-of-baghdad-governorate
#19
A N Al-Thwani, M S Al-Mashhadani
OBJECTIVE/BACKGROUND: Tuberculosis (the white plague) is regarded as one of the most widespread infectious diseases and continues to be a leading cause of death and the most prominent public health problem worldwide. It is caused by Mycobacterium tuberculosis complex, which refers to a group of seven species; one of them known as Mycobacterium bovis-the cause of bovine-type tuberculosis-has an exceptionally wide host range. It infects cattle, humans, goats, cats, dogs, buffalo, and deer...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28034725/mechanisms-of-acupuncture-on-vascular-dementia-a-review-of-animal-studies
#20
Yang Ye, Wen Zhu, Xue-Rui Wang, Jing-Wen Yang, Ling-Yong Xiao, Yi Liu, Xin Zhang, Cun-Zhi Liu
Vascular dementia (VaD) is the second leading type of dementia after Alzheimer's disease plaguing the aging population. Acupuncture has served as alternative and complementary medicine in the world for a long time and its use for VaD is based on a large body of preclinical and clinical researches. The mechanisms that underlie the protective effects of acupuncture are slowly beginning to be understood. Acupuncture influences multiple aspects of the pathological process of VaD. It improves cognitive function through protecting cerebral neurons from oxidative stress, apoptosis, and neuroinflammation, regulating glucose metabolism and neurotransmitters...
December 26, 2016: Neurochemistry International
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