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Giulia Prete, Mara Fabri, Nicoletta Foschi, Luca Tommasi
We investigated hemispheric asymmetries in categorization of face gender by means of a divided visual field paradigm, in which female and male faces were presented unilaterally for 150 ms each. A group of 60 healthy participants (30 males) and a male split-brain patient (D.D.C.) were asked to categorize the gender of the stimuli. Healthy participants categorized male faces presented in the right visual field (RVF) better and faster than when presented in the left visual field (LVF), and female faces presented in the LVF than in the RVF, independently of the participants' sex...
October 13, 2016: Neuroscience
José L Díaz-Gómez, Andres Borja Alvarez, Jonathan J Danaraj, Michelle L Freeman, Augustine S Lee, Farouk Mookadam, Brian P Shapiro, Harish Ramakrishna
OBJECTIVES: The tricuspid annular plane systolic excursion (TAPSE) is a validated measure of right ventricular function; however, the apical echocardiographic window varies and has limitations in intensive care unit (ICU) patients receiving mechanical ventilation or those with underlying disease and air entrapment. We aimed to evaluate the subcostal echocardiographic assessment of tricuspid annular kick (SEATAK) as an alternative to TAPSE in critically ill patients. METHODS: To measure SEATAK, we obtained the subcostal inferior vena cava view and used M-mode to measure excursion of the tricuspid annulus (kick)...
October 14, 2016: Echocardiography
Maria Luisa Danzetta, Rossana Bruno, Francesca Sauro, Lara Savini, Paolo Calistri
Rift Valley fever (RVF) is one of the most important zoonotic Transboundary Animal Diseases able to cross international borders and cause devastating effect on animal health and food security. Climate changes and the presence of competent vectors in the most of the current RVF-free temperate countries strongly support the inclusion of RVF virus (RVFV) among the most significant emerging viral threats for public and animal health. The transmission of RVFV is driven by complex eco-climatic factors making the epidemiology of RVF infection difficult to study and to understand...
September 11, 2016: Preventive Veterinary Medicine
Abdourahmane Sow, Ousmane Faye, Yamar Ba, Diawo Diallo, Gamou Fall, Oumar Faye, Ndeye Sakha Bob, Cheikh Loucoubar, Vincent Richard, Anta Tal Dia, Mawlouth Diallo, Denis Malvy, Amadou Alpha Sall
Rift Valley fever (RVF), which caused epizootics and epidemics among human and livestock populations, occurred in Senegal in 2013-2014. A multidisciplinary field investigation was carried out in 3 regions of Senegal. We found 11 confirmed human cases of Rift Valley fever, including severe cases with encephalitis and retinitis, 1 pool of mosquito (Aedes ochraceus), and 52 animals tested positive for the disease. Symptoms such as encephalitis and macular retinitis were the most severe cases reported so far in Senegal...
September 2016: Open Forum Infectious Diseases
Moataz Alhaj
Rift Valley Fever (RVF) is an infectious illness with serious clinical manifestations and health consequences in humans as well as a wide range of domestic ruminants. This review provides significant information about the prevention options of RVF along with the safety-efficacy profile of commercial vaccines and some of RVF vaccination strategies. Information presented in this paper was obtained through a systematic investigation of published data about RVF vaccines. Like other viral diseases, the prevention of RVF relies heavily on immunization of susceptible herds with safe and cost-effective vaccine that is able to confer long-term protective immunity...
2016: Journal of Immunology Research
Caterina M Scoglio, Claudio Bosca, Mahbubul H Riad, Faryad D Sahneh, Seth C Britch, Lee W Cohnstaedt, Kenneth J Linthicum
Rift Valley fever (RVF) is a zoonotic disease endemic in sub-Saharan Africa with periodic outbreaks in human and animal populations. Mosquitoes are the primary disease vectors; however, Rift Valley fever virus (RVFV) can also spread by direct contact with infected tissues. The transmission cycle is complex, involving humans, livestock, and multiple species of mosquitoes. The epidemiology of RVFV in endemic areas is strongly affected by climatic conditions and environmental variables. In this research, we adapt and use a network-based modeling framework to simulate the transmission of RVFV among hypothetical cattle operations in Kansas, US...
2016: PloS One
Mohamed Lemine Ould Salem, Sidi El Wafi Ould Baba, Fatimetou Zahra Fall-Malick, Boushab Mohamed Boushab, Sidi Mohamed Ghaber, Abdelwedoud Mokhtar
Rift Valley fever (RVF) is an arbovirus caused by an RNA virus belonging to family Bunyaviridae (genus phlebovirus). It is a zoonosis that primarily affects animals but it also has the capacity to infect humans, either by handling meat, runts of sick animals or, indirectly, by the bite of infected mosquitoes (Aedes sp, Anopheles sp, Culex sp). In most cases, RVF infection in humans is asymptomatic, but it can also manifest as moderate febrile syndrome with a favorable outcome. However, some patients may develop hemorrhagic syndrome and/or neurological damages with a fatal evolution...
2016: Pan African Medical Journal
Annelise Tran, Carlène Trevennec, Julius Lutwama, Joseph Sserugga, Marie Gély, Claudia Pittiglio, Julio Pinto, Véronique Chevalier
Rift Valley fever (RVF), a mosquito-borne disease affecting ruminants and humans, is one of the most important viral zoonoses in Africa. The objective of the present study was to develop a geographic knowledge-based method to map the areas suitable for RVF amplification and RVF spread in four East African countries, namely, Kenya, Tanzania, Uganda and Ethiopia, and to assess the predictive accuracy of the model using livestock outbreak data from Kenya and Tanzania. Risk factors and their relative importance regarding RVF amplification and spread were identified from a literature review...
September 2016: PLoS Neglected Tropical Diseases
Kamila Śmigasiewicz, Gabriel Sami Hasan, Rolf Verleger
In dynamically changing environments, spatial attention is not equally distributed across the visual field. For instance, when two streams of stimuli are presented left and right, the second target (T2) is better identified in the left visual field (LVF) than in the right visual field (RVF). Recently, it has been shown that this bias is related to weaker stimulus-driven orienting of attention toward the RVF: The RVF disadvantage was reduced with salient task-irrelevant valid cues and increased with invalid cues...
September 14, 2016: Journal of Cognitive Neuroscience
Weijie Chen, Xin Chen, Guole Lin, Huizhong Qiu
BACKGROUND: Rectovaginal fistulas (RVFs) are abnormal connections between the rectum and vagina. Although many surgical approaches to correct them have been attempted, management of RVFs still remains a challenge, especially for recurrent RVFs. METHODS: In the present study, we report a case in a 22-year-old female with a chief complaint of obvious passages of flatus or stool through the vagina for 10 years. She had suffered a vaginal trauma from a violent accident 10 years prior, and gradually noticed the uncontrollable passage of gas or feces from the vagina 2 weeks later...
September 2016: Medicine (Baltimore)
Dechun Su, Wanxiang Zheng, Yan Liu, Tao Cong, Yinghui Sun, Zhijuan Shang, Ke Wang
BACKGROUND: The noninvasive evaluation of right ventricular function (RVF) in cardiovascular and pulmonary diseases remains a challenge. Internationally recommended echocardiographic parameters for the evaluation of RVF may not be applicable to China, because of the limited examination time per patient, the varying skill levels of ultrasonographers, inadequate allocation of professional specialties, and outdated instruments and equipment. METHODS: Sixty-two patients admitted for right heart failure and 52 healthy volunteers were included in the analysis...
2016: Heart Surgery Forum
Luis De la Torre, Kimberly Cogley, Juan L Calisto, Karla Santos, Alejandro Ruiz, María Zornoza
BACKGROUND: The association of rectovestibular fistula (RVF) and vaginal agenesis (VA) presents a diagnostic and management challenge. The vaginal replacement is usually performed with rectum or sigmoid, which are the natural fecal reservoirs; thus, the fecal control could be affected. We present our experience utilizing ileum to preserve the rectum and sigmoid. METHODS: We performed a retrospective study of eight patients with RVF and VA treated from May 2011 to June 2015 at two colorectal centers, at Pittsburgh and Mexico...
November 2016: Journal of Pediatric Surgery
Zhan-Fei She, Xiao-Peng Yan, Feng Ma, Hao-Hua Wang, Huan Yang, Ai-Hua Shi, Liang Wang, Xin Qi, Bin Xiao, Yu-Liang Zou, Yi Lv
INTRODUCTION AND HYPOTHESIS: Rectovaginal fistula (RVF) is an abnormal epithelium-lined connection between the rectum and vagina. The primary effective treatment is surgical repair, but recurrence remains a challenge. Magnetic compression anastomosis (MCA), an alternative to suturing, has been developed to generate an anastomosis between various hollow viscera. We hypothesized that the MCA approach could be used to treat RVF. METHOD: We designed a novel MCA device for RVF treatment and evaluated the magnetic compression procedure in a RVF pig model in comparison with the traditional suturing procedure...
August 16, 2016: International Urogynecology Journal
Young Hwan Lee, Kui Ja Lee, Yong Hun Min, Hee Cheol Ahn, You Dong Sohn, Won Woong Lee, Young Taeck Oh, Gyu Chong Cho, Jeong Yeol Seo, Dong Hyuk Shin, Sang O Park, Seung Min Park
AIMS: This study aimed to evaluate the effects of esmolol treatment for patients with refractory ventricular fibrillation (RVF) in out-of-hospital cardiac arrest (OHCA). METHODS: This single-centre retrospective pre-post study evaluated patients who were treated between January 2012 and December 2015. Some patients had received esmolol (loading dose: 500μg/kg, infusion: 0-100μg/kg/min) for RVF (≥3 defibrillation attempts), after obtaining consent from the patient's guardian...
October 2016: Resuscitation
Sansao A Pedro, Shirley Abelman, Henri E Z Tonnang
To date, our knowledge of Rift Valley fever (RVF) disease spread and maintenance is still limited, as flooding, humid weather and presence of biting insects such as mosquitoes, have not completely explained RVF outbreaks. We propose a model that includes livestock, mosquitoes and ticks compartments structured according to their questing and feeding behaviour in order to study the possible role of ticks on the dynamics of RVF. To quantify disease transmission at the initial stage of the epidemic, we derive an explicit formula of the basic reproductive number, [Formula: see text]...
August 11, 2016: Acta Biotheoretica
Hammami Pachka, Tran Annelise, Kemp Alan, Tshikae Power, Kgori Patrick, Chevalier Véronique, Paweska Janusz, Jori Ferran
BACKGROUND: In Northern Botswana, rural communities, livestock, wildlife and large numbers of mosquitoes cohabitate around permanent waters of the Okavango Delta. As in other regions of sub-Saharan Africa, Rift Valley Fever (RVF) virus is known to circulate in that area among wild and domestic animals. However, the diversity and composition of potential RVF mosquito vectors in that area are unknown as well as the climatic and ecological drivers susceptible to affect their population dynamics...
2016: Parasites & Vectors
Chiraz Ben Naceur, Valérie Maxime, Hedi Ben Mansour, Véronique Le Tilly, Olivier Sire
Human activities require fossil fuels for transport and energy, a substantial part of which can accidentally or voluntarily (oil spillage) flow to the marine environment and cause adverse effects in human and ecosystems' health. This experiment was designed to estimate the suitability of an original cellular biomarker to early quantify the biological risk associated to hydrocarbons pollutants in seawater. Oocytes and hepatopancreas cells, isolated from oyster (Crassostrea gigas), were tested for their capacity to regulate their volume following a hypo-osmotic challenge...
November 2016: Ecotoxicology and Environmental Safety
Mubarak Al Shraim, Refaat Eid, Khaled Radad, Noora Saeed
Rift Valley fever (RVF) is a zoonotic disease that primarily affects ruminant animals and can also cause fatal disease in humans. In the current report, we present the ultrastructural changes in the liver of a man aged 60 years who died from RVF in the Aseer Central Hospital, Abha, Saudi Arabia. The main hepatic changes by transmission electron microscopy included the presence of 95-115 nm electron-dense particles consistent with RVF virions, nuclear condensation, vacuolar degeneration, lipid droplet accumulation and mitochondrial damage and dilation...
2016: BMJ Case Reports
Michael Dandel, Roland Hetzer
Right ventricular (RV) size, shape and function are distinctly load-dependent and pulmonary load is an important determinant of RV function in patients with congestive heart failure (CHF) due to primary impaired left ventricular function and in those with pre-capillary pulmonary hypertension (PH). In a pressure overloaded RV, not only dilation and aggravation of tricuspid regurgitation, but also systolic dysfunction leading to RV failure (RVF) can occur already before the development of irreversible alterations in RV myocardial contractility...
October 15, 2016: International Journal of Cardiology
Ccg Chen, D Barry, S K Khatry, E M Klasen, M Singh, S C LeClerq, J Katz, J M Tielsch, L C Mullany
OBJECTIVE: To validate a symptom-based fistula screening questionnaire and estimate obstetric fistula (OF) prevalence in rural Nepal. DESIGN: Cross-sectional and nested case-control study. SETTING: Sarlahi District, Nepal. POPULATION: Parous, reproductive age women. METHODS: The questionnaire assessed symptoms of vesicovaginal and rectovaginal fistula (VVF and RVF, respectively), stress and urge urinary incontinence (SUI and UUI, respectively), fecal incontinence (FI), and included interviewer observations on the smell and presence of urine and/or stool...
July 27, 2016: BJOG: An International Journal of Obstetrics and Gynaecology
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