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https://www.readbyqxmd.com/read/28088105/tectona-grandis-leaf-extract-free-and-associated-with-nanoemulsions-as-a-possible-photosensitizer-of-mouse-melanoma-b16-cell
#1
Cydia de Menezes Furtado, Fernando Sergio Escocio Drumond Viana de Faria, Ricardo Bentes Azevedo, Karen Py-Daniel, Ana Lygia Dos Santos Camara, Jaqueline Rodriguez da Silva, Everton de Holanda Oliveira, Anselmo Fortunato Ruiz Rodriguez, Igor Anatolievich Degterev
Over the past six years we have been studying extracts from tropical, specially Amazon, plants, to search for new sensitizers for photodynamic therapy of cancer and infectious diseases. Tectona grandis is a genus of tropical hardwood trees in the mint family, Lamiaceae. That is native to south and southeast Asia, but since the end of the 20th century is also gaining ground in the Amazon. The present work aims to evaluate the photodynamic potential of hydro-alcoholic extract from Tectona grandis LF leaves (TGE) and the same extract prepared as the oil-water nanoemulsion (TGE-NE) against melanoma B16 F10 cells...
January 5, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28087937/myeloid-cell-phenotypes-in-susceptibility-and-resistance-to-helminth-parasite-infections
#2
Rick M Maizels, James P Hewitson
Many major tropical diseases are caused by long-lived helminth parasites that are able to survive by modulation of the host immune system, including the innate compartment of myeloid cells. In particular, dendritic cells and macrophages show markedly altered phenotypes during parasite infections. In addition, many specialized subsets such as eosinophils and basophils expand dramatically in response to these pathogens. The changes in phenotype and function, and their effects on both immunity to infection and reactivity to bystander antigens such as allergens, are discussed...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087534/mechanisms-of-horizontal-cell-to-cell-transfer-of-wolbachia-spp-in-drosophila-melanogaster
#3
Pamela M White, Jose E Pietri, Alain Debec, Shelbi Russell, Bhavin Patel, William Sullivan
: Wolbachia is an intracellular endosymbiont present in most arthropod and filarial nematode species. Transmission between hosts is primarily vertical, taking place exclusively through the female germline, though horizontal transmission has also been documented. Several studies indicate that Wolbachia is capable of transfer between somatic and germline cells during nematode development and in adult flies. However, the mechanisms underlying horizontal cell-to-cell transfer remain largely unexplored...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28086897/application-of-the-analytic-hierarchy-approach-to-the-risk-assessment-of-zika-virus-disease-transmission-in-guangdong-province-china
#4
Xing Li, Tao Liu, Lifeng Lin, Tie Song, Xiaolong Du, Hualiang Lin, Jianpeng Xiao, Jianfeng He, Liping Liu, Guanghu Zhu, Weilin Zeng, Lingchuan Guo, Zheng Cao, Wenjun Ma, Yonghui Zhang
BACKGROUND: An international spread of Zika virus (ZIKV) infection has attracted global attention in 2015. The infection also affected Guangdong province, which is located in southern China. Multiple factors, including frequent communication with South America and Southeast Asia, suitable climate (sub-tropical) for the habitat of Aedes species, may increase the risk of ZIKV disease transmission in this region. METHODS: An analytic hierarchy process (AHP) method was used to develop a semi-quantitative ZIKV risk assessment model...
January 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28081121/isolation-of-novel-trypanosomatid-zelonia-australiensis-sp-nov-kinetoplastida-trypanosomatidae-provides-support-for-a-gondwanan-origin-of-dixenous-parasitism-in-the-leishmaniinae
#5
Joel Barratt, Alexa Kaufer, Bryce Peters, Douglas Craig, Andrea Lawrence, Tamalee Roberts, Rogan Lee, Gary McAuliffe, Damien Stark, John Ellis
The genus Leishmania includes approximately 53 species, 20 of which cause human leishmaniais; a significant albeit neglected tropical disease. Leishmaniasis has afflicted humans for millennia, but how ancient is Leishmania and where did it arise? These questions have been hotly debated for decades and several theories have been proposed. One theory suggests Leishmania originated in the Palearctic, and dispersed to the New World via the Bering land bridge. Others propose that Leishmania evolved in the Neotropics...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28078983/cutaneous-larva-migrans
#6
Alexander K C Leung, Benjamin Barankin, Kam Lun Hon
BACKGROUND: Cutaneous larva migrans is one of the most common skin diseases reported in travelers returning from tropical regions. Western physicians, however, are often not familiar of this condition. OBJECTIVE: To review in depth the epidemiology, pathophysiology, clinical manifestations, complications, and treatment of cutaneous larva migrans. METHODS: A PubMed search was completed in Clinical Queries using the key term "cutaneous larva migrans"...
January 10, 2017: Recent Patents on Inflammation & Allergy Drug Discovery
https://www.readbyqxmd.com/read/28075354/the-state-of-the-art-of-lethal-oviposition-trap-based-mass-interventions-for-arboviral-control
#7
Brian J Johnson, Scott A Ritchie, Dina M Fonseca
The intensifying expansion of arboviruses highlights the need for effective invasive Aedes control. While mass-trapping interventions have long been discredited as inefficient compared to insecticide applications, increasing levels of insecticide resistance, and the development of simple affordable traps that target and kill gravid female mosquitoes, show great promise. We summarize the methodologies and outcomes of recent lethal oviposition trap-based mass interventions for suppression of urban Aedes and their associated diseases...
January 8, 2017: Insects
https://www.readbyqxmd.com/read/28070012/prevalence-and-risk-factors-for-intestinal-parasitic-infection-in-schoolchildren-in-battambang-cambodia
#8
Chien-Wei Liao, Kuan-Chih Chiu, I-Chen Chiang, Po-Ching Cheng, Ting-Wu Chuang, Juo-Han Kuo, Yun-Hung Tu, Chia-Kwung Fan
Most intestinal parasitic infections (IPIs), commonly endemic in tropical resource-poor developing countries, are neglected tropical diseases. Parasitic infections and malnutrition are most commonly found in children. We determined the prevalence of IPIs and the risk factors in Battambang Province, northwestern Cambodia, from August to September 2015. This study collected 308 valid questionnaires and specimens from Dontri (173, 56.2%) and Kon Kaêk (135, 43.8%) primary schools. All stool samples were examined using Chang's Feces Examination Apparatus through the merthiolate-iodine-formaldehyde technique...
January 9, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28069074/a-next-generation-microarray-further-reveals-stage-enriched-gene-expression-pattern-in-the-blood-fluke-schistosoma-japonicum
#9
Pengfei Cai, Shuai Liu, Xianyu Piao, Nan Hou, Hong You, Donald P McManus, Qijun Chen
BACKGROUND: Schistosomiasis is caused by infection with blood flukes of the genus Schistosoma, and ranks, in terms of disability-adjusted life years (DALYs), as the third most important neglected tropical disease. Schistosomes have several discrete life stages involving dramatic morphological changes during their development, which require subtle gene expression modulations to complete the complex life-cycle. RESULTS: In the current study, we employed a second generation schistosome DNA chip printed with the most comprehensive probe array for studying the Schistosoma japonicum transcriptome, to explore stage-associated gene expression in different developmental phases of S...
January 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28068904/long-term-kinetics-of-zika-virus-rna-and-antibodies-in-body-fluids-of-a-vasectomized-traveller-returning-from-martinique-a-case-report
#10
Guenter Froeschl, Kristina Huber, Frank von Sonnenburg, Hans-Dieter Nothdurft, Gisela Bretzel, Michael Hoelscher, Lothar Zoeller, Matthias Trottmann, Francisco Pan-Montojo, Gerhard Dobler, Silke Woelfel
BACKGROUND: The magnitude of the current Zika virus (ZIKV) epidemic has led to a declaration of a Public Health Emergency of International Concern by the WHO. Findings of viable viral particles in semen for several weeks are corroborating reports of sexual transmission of ZIKV. Serious consequences of a positive diagnostic result particularly in the pregnant patient are calling for precise diagnostic tools also at later time points after infection. Currently, recommendations suggest a diagnostic period of direct viral detection of 5 to 7 days after onset of symptoms in serum or plasma, and up to 3 weeks in urine samples...
January 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28063102/quantitative-analyses-of-the-bacterial-microbiota-of-rearing-environment-tilapia-and-common-carp-cultured-in-earthen-ponds-and-inhibitory-activity-of-its-lactic-acid-bacteria-on-fish-spoilage-and-pathogenic-bacteria
#11
Pierre Marie Kaktcham, Jules-Bocamdé Temgoua, François Ngoufack Zambou, Gloria Diaz-Ruiz, Carmen Wacher, María de Lourdes Pérez-Chabela
The present study aimed to evaluate the bacterial load of water, Nile Tilapia and common Carp intestines from earthen ponds, isolate lactic acid bacteria (LAB) and assess their antimicrobial activity against fish spoilage and pathogenic bacteria. Following enumeration and isolation of microorganisms the antimicrobial activity of the LAB isolates was evaluated. Taxonomic identification of selected antagonistic LAB strains was assessed, followed by partial characterisation of their antimicrobial metabolites. Results showed that high counts (>4 log c...
February 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28061874/slc11a1-polymorphisms-and-host-susceptibility-to-cutaneous-leishmaniasis-in-pakistan
#12
Mariam Sophie, Abdul Hameed, Akhtar Muneer, Azam J Samdani, Saima Saleem, Abid Azhar
BACKGROUND: The vector-borne cutaneous leishmaniasis (CL) is endemic in several regions of Pakistan mainly affecting poor populations. Host genetic factors, particularly SLC11A1 (solute carrier transmembrane protein) within macrophages, play a crucial role in disease pathology and susceptibility. Association of SLC11A1 with cutaneous leishmaniasis, a neglected tropical disease, is not well established. Inconsistencies have been observed within different populations worldwide with respect to genetic susceptibility...
January 7, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28060841/genomes-of-fasciola-hepatica-from-the-americas-reveal-colonization-with-neorickettsia-endobacteria-related-to-the-agents-of-potomac-horse-and-human-sennetsu-fevers
#13
Samantha N McNulty, Jose F Tort, Gabriel Rinaldi, Kerstin Fischer, Bruce A Rosa, Pablo Smircich, Santiago Fontenla, Young-Jun Choi, Rahul Tyagi, Kymberlie Hallsworth-Pepin, Victoria H Mann, Lakshmi Kammili, Patricia S Latham, Nicolas Dell'Oca, Fernanda Dominguez, Carlos Carmona, Peter U Fischer, Paul J Brindley, Makedonka Mitreva
Food borne trematodes (FBTs) are an assemblage of platyhelminth parasites transmitted through the food chain, four of which are recognized as neglected tropical diseases (NTDs). Fascioliasis stands out among the other NTDs due to its broad and significant impact on both human and animal health, as Fasciola sp., are also considered major pathogens of domestic ruminants. Here we present a reference genome sequence of the common liver fluke, Fasciola hepatica isolated from sheep, complementing previously reported isolate from cattle...
January 6, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28057975/chagas-disease-a-tropical-infection-of-interest-to-the-radiologist
#14
EDITORIAL
Edson Marchiori
No abstract text is available yet for this article.
November 2016: Radiologia Brasileira
https://www.readbyqxmd.com/read/28054952/computer-aided-drug-design-using-sesquiterpene-lactones-as-sources-of-new-structures-with-potential-activity-against-infectious-neglected-diseases
#15
REVIEW
Chonny Herrera Acevedo, Luciana Scotti, Mateus Feitosa Alves, Margareth De Fátima Formiga Melo Diniz, Marcus Tullius Scotti
This review presents an survey to the biological importance of sesquiterpene lactones (SLs) in the fight against four infectious neglected tropical diseases (NTDs)-leishmaniasis, schistosomiasis, Chagas disease, and sleeping sickness-as alternatives to the current chemotherapies that display several problems such as low effectiveness, resistance, and high toxicity. Several studies have demonstrated the great potential of some SLs as therapeutic agents for these NTDs and the relationship between the protozoal activities with their chemical structure...
January 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28054225/spectrum-and-burden-of-neglected-tropical-diseases-observed-in-an-infectious-and-tropical-diseases-unit-in-florence-italy-2000-2015
#16
Lorenzo Zammarchi, Iacopo Vellere, Leonardo Stella, Filippo Bartalesi, Marianne Strohmeyer, Alessandro Bartoloni
Neglected tropical diseases (NTDs) are a diverse group of acute and chronic conditions with distinct characteristics that thrive mainly among the poorest populations, almost exclusively in tropical countries. To evaluate the relevance and impact of NTDs in a temperate area, the number and features of patients diagnosed with NTDs at the Infectious and Tropical Diseases Unit (ITDU), Azienda Ospedaliero-Universitaria Careggi, Florence, Italy between 2000 and 2015 were retrospectively reviewed. Overall 289 NTD cases were diagnosed in 283 subjects accounting for 2...
January 4, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28052493/disassembly-of-a-tadpole-community-by-a-multi-host-fungal-pathogen-with-limited-evidence-of-recovery
#17
Graziella V DiRenzo, Christian Che-Castaldo, Amanda Rugenski, Roberto Brenes, Matt R Whiles, Catherine M Pringle, Susan S Kilham, Karen R Lips
Emerging infectious diseases can cause host community disassembly, but the mechanisms driving the order of species declines and extirpations following a disease outbreak are unclear. We documented the community disassembly of a Neotropical tadpole community during a chytridiomycosis outbreak, triggered by the generalist fungal pathogen, Batrachochytrium dendrobatidis (Bd). Within the first 11 months of Bd arrival, tadpole density and occupancy rapidly declined. Species rarity, in terms of tadpole occupancy and adult relative abundance, did not predict the odds of tadpole occupancy declines...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28050425/severe-left-ventricular-endomyocardial-fibrosis-presenting-as-biventricular-failure-in-a-young-adult-a-case-report
#18
Harpreet Singh Sandhu, Sampathkumar Mahadevappa Mahendrakar, Rajebali Ramzanali Pethani, Azizullah Hafizullah Khan, Yunus Shafi Loya
Endomyocardial Fibrosis (EMF) is a form of progressive restrictive cardiomyopathy of unclear aetiology prevalent in areas within 15(0) of equator including coastal areas of Kerala a few decades back. It inflicts young adults and carries a poor prognosis due to limited options for treatment. Fortunately, the incidence of cases is now declining due to improvement in health and hygiene standards. Here, we review the aetiology and pathogenesis of EMF and report a case of a young male from Mumbai (non-endemic area) presenting with progressively worsening breathlessness and signs of heart failure unresponsive to conventional medical treatment...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28049536/usefulness-of-a-biomarker-to-identify-placental-dysfunction-in-the-context-of-malaria
#19
REVIEW
Alexandra Gueneuc, Philippe Deloron, Gwladys I Bertin
In most tropical areas, pregnant women are at increased risk of malaria, as a consequence of the massive sequestration of parasitized red blood cells in the placenta. The placenta plays a key role in embryonic and fetal development as well as in maternal-fetal exchanges, and pregnancy-associated malaria may alter selected placenta functions that lead to stillbirth and low birth weight. Although there are several tools (blood smear examination, RDT, PCR) to diagnose malaria infection during pregnancy, there is currently no test to assess placenta dysfunction in the framework of pregnancy-associated malaria...
January 3, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28049483/pterodon-emarginatus-oleoresin-based-nanoemulsion-as-a-promising-tool-for-culex-quinquefasciatus-diptera-culicidae-control
#20
Anna E M F M Oliveira, Jonatas L Duarte, Rodrigo A S Cruz, Raimundo N P Souto, Ricardo M A Ferreira, Taires Peniche, Edemilson C da Conceição, Leandra A R de Oliveira, Silvia M M Faustino, Alexandro C Florentino, José C T Carvalho, Caio P Fernandes
BACKGROUND: Preparation of nanoformulations using natural products as bioactive substances is considered very promising for innovative larvicidal agents. On this context, oil in water nanoemulsions develop a main role, since they satisfactorily disperse poor-water soluble substances, such as herbal oils, in aqueous media. Pterodon emarginatus, popularly known as sucupira, has a promising bioactive oleoresin. However, to our knowledge, no previous studies were carried out to evaluate its potential against Culex quinquefasciatus, the main vector of the tropical neglected disease called lymphatic filariasis or elephantiasis...
January 3, 2017: Journal of Nanobiotechnology
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