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Tropical infectious diseases

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https://www.readbyqxmd.com/read/28427354/unique-case-report-of-a-chromomycosis-and-listeria-in-soft-tissue-and-cerebellar-abscesses-after-kidney-transplantation
#1
J Tourret, N Benabdellah, S Drouin, F Charlotte, J Rottembourg, N Arzouk, A Fekkar, B Barrou
BACKGROUND: Chromomycosis is a rare mycotic infection encountered in tropical and subtropical regions. The disease presents as a slowly-evolving nodule that can become infected with bacteria. Here, we describe a unique association of abscesses caused by a chromomycosis and Listeria monocytogenes in a kidney transplant recipient, and didactically expose how the appropriate diagnosis was reached. CASE PRESENTATION: A 49-year old male originating from the Caribbean presented a scalp lesion which was surgically removed in his hometown where it was misdiagnosed as a sporotrichosis on histology, 3 years after he received a kidney transplant...
April 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28427109/traveler-s-diarrhea-vision-abnormalities-and-unsteady-gait-in-a-young-woman
#2
Tobias Mühling, Felix Gundling, Thomas Helmberger, Wolfgang Schepp
We report on the course of disease in a young woman, originally admitted with suspected refractory infectious tropical traveler's diarrhea. However, symptoms did not resolve upon either symptomatic or subsequent antibiotic therapy. When neurologic deterioration was observed, imaging studies revealed a dramatic series of thromboembolic events, including intracranial hemorrhage caused by extensive sinus vein thrombosis as well as thrombi of the right cardiac ventricle. Colonic mucosal biopsy samples finally led to the histologic diagnosis of ulcerative colitis...
April 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28421255/-tropical-dermatology-relevant-disorders-of-the-scalp
#3
REVIEW
A Montag
People whose ancestors came from tropical regions present specific structural characteristics of their skin and hair, including the scalp region. On the one hand, this is for protection against the challenges of these climatic zones; on the other hand, this may lead to an enhanced sensitivity against certain dermatological diseases, either of autoimmune, chronic inflammatory, infectious, or of mechanical origin. A collection of these are discussed in this article.
April 18, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28414677/a-rare-case-of-tropical-pyomysitis-acquired-on-vacation-in-a-healthy-male
#4
K Poole, T Tran
INTRODUCTION: Pyomyositis has traditionally been considered a tropical disease. Increasing prevalence has been observed in more northern climates, especially with HIV, immunosuppression, and IV drug abuse as predisposing factors. Pyomyositis has the tendency to mimic other conditions, such as muscle contusion, necrotizing fasciitis, or septic arthritis. The rarity of this disease and non-specificity of its symptoms often lead to delay in appropriate diagnosis and treatment. CASE: 24-year-old man, seen 2 days prior in orthopedics clinic and the Emergency Department for persistent gluteal pain thought to be due to right-sided sciatica, was admitted following worsening pain, diffuse generalized weakness with polyarthralgias and myalgias These symptoms were associated with night sweats, shaking chills, and difficulty walking...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28396090/executive-summary-of-imported-infectious-diseases-after-returning-from-foreign-travel-consensus-document-of-the-spanish-society-for-infectious-diseases-and-clinical-microbiology-seimc
#5
José Luis Pérez-Arellano, Miguel Górgolas-Hernández-Mora, Fernando Salvador, Cristina Carranza-Rodríguez, Germán Ramírez-Olivencia, Esteban Martín-Echeverría, Azucena Rodríguez-Guardado, Francesca Norman, Virginia Velasco-Tirado, Zuriñe Zubero-Sulibarría, Gerardo Rojo-Marcos, José Muñoz-Gutierrez, José Manuel Ramos-Rincón, M Paz Sánchez-Seco-Fariñas, María Velasco-Arribas, Moncef Belhassen-García, Mar Lago-Nuñez, Elías Cañas García-Otero, Rogelio López-Vélez
In a global world, knowledge of imported infectious diseases is essential in daily practice, both for the microbiologist-parasitologist and the clinician who diagnoses and treats infectious diseases in returned travelers. Tropical and subtropical countries where there is a greater risk of contracting an infectious disease are among the most frequently visited tourist destinations. The SEIMC considers it appropriate to produce a consensus document that will be useful to primary care physicians as well as specialists in internal medicine, infectious diseases and tropical medicine who help treat travelers returning from tropical and sub-tropical areas with infections...
April 7, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28390873/chikungunya-virus-nsp4-rna-dependent-rna-polymerase-core-domain-displays-detergent-sensitive-primer-extension-and-terminal-adenylyltransferase-activities
#6
Ming Wei Chen, Yaw Bia Tan, Jie Zheng, Yongqian Zhao, Bee Ting Lim, Tobias Cornvik, Julien Lescar, Lisa Fong Poh Ng, Dahai Luo
Chikungunya virus (CHIKV) is an important arboviral infectious agent in tropical and subtropical regions, often causing persistent and debilitating disease. The viral enzyme non-structural protein 4 (nsP4), as RNA-dependent RNA polymerase (RdRP), catalyzes the formation of negative-sense, genomic and subgenomic viral RNAs. Here we report a truncated nsP4 construct that is soluble, stable and purified recombinantly from Escherichia coli. Sequence analyses and homology modelling indicate that all necessary RdRP elements are included...
April 5, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28385152/addressing-a-clinical-challenge-guidelines-for-the-diagnosis-and-treatment-of-leishmaniasis
#7
Naomi E Aronson
Leishmaniasis is a chronic intracellular parasitic infection that travelers, immigrants, deployed military personnel, and refugees from endemic global areas acquire from the bite of infected sand flies and carry with them, including to non-endemic countries where leishmaniasis may be an unfamiliar illness to medical providers. This commentary discusses the first clinical practice guidelines produced by the Infectious Diseases Society of America and American Society of Tropical Medicine and Hygiene for the diagnosis and management of leishmaniasis, targeted for clinicians in North America...
April 7, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28384290/mait-cells-are-reduced-in-frequency-and-functionally-impaired-in-human-t-lymphotropic-virus-type-1-infection-potential-clinical-implications
#8
Dominic Paquin-Proulx, Benjamin C Greenspun, Emanuela A S Costa, Aluisio C Segurado, Esper G Kallas, Douglas F Nixon, Fabio E Leal
HTLV-1 infection is associated with several inflammatory disorders, including the neurodegenerative condition HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). It is unclear why a minority of infected subjects develop HAM/TSP. The cellular immune response has been implicated in the development of inflammatory alterations in these patients; however the pathogenic mechanisms for disease progression remain unclear. Furthermore, HTLV-1-infected individuals have an increase incidence of Mycobacterium tuberculosis (Mtb) infection, suggesting that immunological defect are associated with HTLV-1 infection...
2017: PloS One
https://www.readbyqxmd.com/read/28370181/development-of-mouse-models-for-analysis-of-human-virus-infections
#9
REVIEW
Hiromi Takaki, Hiroyuki Oshiumi, Masashi Shingai, Misako Matsumoto, Tsukasa Seya
Viruses usually exhibit strict species-specificity as a result of co-evolution with the host. Thus, in mouse models, a great barrier exists for analysis of infections with human-tropic viruses. Mouse models are unlikely to faithfully reproduce the human immune response to viruses or viral compounds and it is difficult to evaluate human therapeutic efficacy with antiviral reagents in mouse models. Humans and mice essentially have different immune systems, which makes it difficult to extrapolate mouse results to humans...
April 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28369324/measuring-success-in-global-health-training-data-from-14-years-of-a-postdoctoral-fellowship-in-infectious-diseases-and-tropical-medicine
#10
Joseph D Tucker, Molly A Hughes, Ravi V Durvasula, Joseph M Vinetz, Victoria P McGovern, Rhonda Schultz, Claire Panosian Dunavan, Mary Wilson, Danny A Milner, Regina C LaRocque, Stephen B Calderwood, Richard L Guerrant, Peter F Weller, Terrie E Taylor
Background: In modern academic medicine, especially in the fields of infectious diseases and global health, aspiring physician-scientists often wait years before achieving independence as basic, translational, and clinical investigators. This study employed mixed methods to evaluate the success of the Burroughs Wellcome Fund and American Society for Tropical Medicine and Hygiene (BWF/ASTMH) global health postdoctoral fellowship in promoting scientific independence. Methods: We examined quantitative data obtained from the NIH and qualitative data provided by the ASTMH and program participants in order to assess BWF/ASTMH trainees' success in earning NIH grants, publishing manuscripts, and gaining faculty positions...
March 22, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28368854/pteropine-orthoreovirus-an-important-emerging-virus-causing-infectious-disease-in-the-tropics
#11
REVIEW
Yeh Fong Tan, Cheong Lieng Teng, Kaw Bing Chua, Kenny Voon
INTRODUCTION: Pteropine orthoreovirus (PRV) is an emerging zoonotic respiratory virus that has spilled over from bats to humans. Though initially found only in bats, further case studies have found viable virus in ill patients. METHODOLOGY: PubMed was queried with the keywords of Nelson Bay orthoreovirus OR Pteropine orthoreovirus OR Melaka orthoreovirus OR Kampar orthoreovirus, and returned 17 hits. RESULTS: Based on prevalence studies, the presence of PRV has been reported in Malaysia and Vietnam, both developing countries...
March 31, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28350402/metabolomics-approach-for-multibiomarkers-determination-to-investigate-dengue-virus-infection-in-human-patients
#12
Nurul Shahfiza, Hasnah Osman, Tang Thean Hock, Abdel-Hamid Zaki Abdel-Hamid
BACKGROUND: Dengue is one of the major public health problems in the world, affecting more than fifty million cases in tropical and subtropical region every year. The metabolome, as pathophysiological end-points, provide significant understanding of the mechanism and progression of dengue pathogenesis via changes in the metabolite profile of infected patients. Recent developments in diagnostic technologies provide metabolomics for the early detection of infectious diseases. METHODS: The mid-stream urine was collected from 96 patients diagnosed with dengue fever at Penang General Hospital (PGH) and 50 healthy volunteers...
March 30, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28346490/effect-of-hiv-and-malaria-parasites-co-infection-on-immune-hematological-profiles-among-patients-attending-anti-retroviral-treatment-art-clinic-in-infectious-disease-hospital-kano-nigeria
#13
Feyisayo Ebenezer Jegede, Tinuade Ibijoke Oyeyi, Surajudeen Abiola Abdulrahman, Henry Akwen Mbah, Titilope Badru, Chinedu Agbakwuru, Oluwasanmi Adedokun
BACKGROUND: Human immunodeficiency virus (HIV) and malaria co-infection may present worse health outcomes in the tropics. Information on HIV/malaria co-infection effect on immune-hematological profiles is critical for patient care and there is a paucity of such data in Nigeria. OBJECTIVE: To evaluate immune-hematological profiles among HIV infected patients compared to HIV/malaria co-infected for ART management improvement. METHODS: This was a cross sectional study conducted at Infectious Disease Hospital, Kano...
2017: PloS One
https://www.readbyqxmd.com/read/28345469/the-role-of-estradiol-metabolism-in-urogenital-schistosomiasis-induced-bladder-cancer
#14
REVIEW
Nuno Vale, Maria J Gouveia, Gabriel Rinaldi, Júlio Santos, Lúcio Lara Santos, Paul J Brindley, José M Correia da Costa
Urogenital schistosomiasis is a neglected tropical disease that can lead to bladder cancer. How urogenital schistosomiasis induces carcinogenesis remains unclear, although there is evidence that the human blood fluke Schistosoma haematobium, the infectious agent of urogenital schistosomiasis, releases estradiol-like metabolites. These kind of compounds have been implicated in other cancers. Aiming for enhanced understanding of the pathogenesis of the urogenital schistosomiasis-induced bladder cancer, here we review, interpret, and discuss findings of estradiol-like metabolites detected in both the parasite and in the human urine during urogenital schistosomiasis...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28341010/history-and-development-of-ophthalmology-in-taiwan
#15
REVIEW
Yu-Chih Hou, Gale A Oren, Muh-Shy Chen, Fung-Rong Hu
Western medicine was first introduced to Taiwan by medical missionaries in the mid-19(th) century. Modernization of medicine was systematically transplanted to Taiwan in the Japanese colonial period, and ophthalmology was established third among hospital departments, following internal medicine and surgery. Dr Hidetaka Yamaguchi, an ophthalmologist, was the first head of the Taihoku Hospital, later known as National Taiwan University Hospital (NTUH; Taipei, Taiwan). Ophthalmologists during the colonial period conducted studies on tropical and infectious eye diseases...
December 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28337203/a-universal-vaccine-against-leptospirosis-are-we-going-in-the-right-direction
#16
André Alex Grassmann, Jéssica Dias Souza, Alan John Alexander McBride
Leptospirosis is the most widespread zoonosis in the world and a neglected tropical disease estimated to cause severe infection in more than one million people worldwide every year that can be combated by effective immunization. However, no significant progress has been made on the leptospirosis vaccine since the advent of bacterins over 100 years. Although protective against lethal infection, particularly in animals, bacterin-induced immunity is considered short term, serovar restricted, and the vaccine can cause serious side effects...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28286767/emerging-and-neglected-infectious-diseases-insights-advances-and-challenges
#17
REVIEW
Nicholas Israel Nii-Trebi
Infectious diseases are a significant burden on public health and economic stability of societies all over the world. They have for centuries been among the leading causes of death and disability and presented growing challenges to health security and human progress. The threat posed by infectious diseases is further deepened by the continued emergence of new, unrecognized, and old infectious disease epidemics of global impact. Over the past three and half decades at least 30 new infectious agents affecting humans have emerged, most of which are zoonotic and their origins have been shown to correlate significantly with socioeconomic, environmental, and ecological factors...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28283015/-cutaneous-larva-migrans-in-turkey-an-imported-case-report
#18
Meliha Çağla Sönmezer, Şebnem Erdinç, Necla Tülek, Cahit Babür, Ayşe Büyükdemirci, Tuba İlgar, Günay Ertem
Cutaneous larva migrans (CLM) is a parasitic infection most commonly found in tropical and subtropical areas. However, with the ease and increase of foreign travel to many countries around the world, the infection is not limited to these areas. CLM is an erythematous, serpiginous infection with skin eruption caused by percutaneous penetration of the larvae to the skin. In this report, a case diagnosed as imported CLM after an Amazon trip and treated with albendazole was presented. A 36 year-old male patient admitted to infectious diseases clinic with intense itching, erythematous, raised, streaklike serpiginious eruptionand some redness at bilateral foot especially at the right foot for about one week...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28277549/the-final-oral-ebola-vaccine-trial-on-captive-chimpanzees
#19
Peter D Walsh, Drishya Kurup, Dana L Hasselschwert, Christoph Wirblich, Jason E Goetzmann, Matthias J Schnell
Could new oral vaccine technologies protect endangered wildlife against a rising tide of infectious disease? We used captive chimpanzees to test oral delivery of a rabies virus (RABV) vectored vaccine against Ebola virus (EBOV), a major threat to wild chimpanzees and gorillas. EBOV GP and RABV GP-specific antibody titers increased exponentially during the trial, with rates of increase for six orally vaccinated chimpanzees very similar to four intramuscularly vaccinated controls. Chimpanzee sera also showed robust neutralizing activity against RABV and pseudo-typed EBOV...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28260567/between-securitisation-and-neglect-managing-ebola-at-the-borders-of-global-health
#20
Mark Honigsbaum
In 2014 the World Health Organization (WHO) was widely criticised for failing to anticipate that an outbreak of Ebola in a remote forested region of south-eastern Guinea would trigger a public health emergency of international concern (pheic). In explaining the WHO's failure, critics have pointed to structural restraints on the United Nations organisation and a leadership 'vacuum' in Geneva, among other factors. This paper takes a different approach. Drawing on internal WHO documents and interviews with key actors in the epidemic response, I argue that the WHO's failure is better understood as a consequence of Ebola's shifting medical identity and of triage systems for managing emerging infectious disease (EID) risks...
April 2017: Medical History
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