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Tropical Pathology

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https://www.readbyqxmd.com/read/29342404/association-between-severity-of-liver-disease-frequency-of-helicobacter-pylori-infection-and-degree-of-gastric-lesion-in-egyptian-patients-with-hepatitis-b-virus-infection
#1
Amal A Mohamed, Amal A Elshimy, Abir O El Sadik, Elham Ezzat, Mona Nasar, Shereen S M Elshaer, Moataz M Sayed
The relationship between hepatitis B virus (HBV) infection, severity of liver disease, frequency of Helicobacter pylori infection, and degree of gastric lesions was not yet fully investigated in Egyptian patients. The present work was performed on 100 Egyptian patients with HBV from the National Hepatology and Tropical Medicine Institute and 70 healthy volunteers as control group. The participants were subjected to full medical history taking, clinical examination, and laboratory investigations. All patients were positive for HBV surface antigen (HBV sAg), HBV DNA, and negative for hepatitis C virus antibodies...
January 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29324739/mansonella-perstans-microfilaremic-individuals-are-characterized-by-enhanced-type-2-helper-t-and-regulatory-t-and-b-cell-subsets-and-dampened-systemic-innate-and-adaptive-immune-responses
#2
Manuel Ritter, Winston Patrick Chounna Ndongmo, Abdel Jelil Njouendou, Nora Nganyewo Nghochuzie, Lucy Cho Nchang, Dizzle Bita Tayong, Kathrin Arndts, Norman Nausch, Marc Jacobsen, Samuel Wanji, Laura E Layland, Achim Hoerauf
The filarial nematode Mansonella perstans is endemic throughout Africa, northern South America and the Caribbean. Interestingly, M. perstans-infected individuals present no distinct clinical picture associated with certain pathology. Due to its relatively silent nature, research on this tropical disease has been neglected, especially M. perstans-driven immune responses. A hindrance in obtaining data on M. perstans-specific responses has been the inability to obtain adult worms since their habitats in serous cavities are difficult to access...
January 11, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29317100/-practices-in-infectious-pathology-in-france-in-2015-results-of-the-national-survey
#3
Arnault Tauziède-Espariat, Fabrice Chrétien, Grégory Jouvion, Homa Alde-Biassette, Paul Hofman
Pathologists have been, are and will be always implicated in the diagnosis of infectious and tropical diseases. The resurgence of opportunistic infections due to the development of immunosuppressive drugs, the increase of migratory involvements draining tropical infections and the last epidemics spotlight the importance of pathologists in the field of infectious diseases. However, cancer is nowadays the first preoccupation of pathologists, which is constantly subject to evaluate diagnostic and prognostic markers and factors predictive to targeted therapy response or immunotherapy...
January 6, 2018: Annales de Pathologie
https://www.readbyqxmd.com/read/29313515/pathological-overview-of-chronic-gastritis-in-senegal-results-of-upper-gastrointestinal-tract-endoscopies
#4
K Doh, I Thiam, A Halim, R C A Takin, G Woto-Gaye
The aim of this study was to determine the prevalence of gastritis in upper endoscopies performed for clinical signs suggestive of gastritis among 100 patients in a tropical country. Chronic gastritis (CG) was present among 81%, including CG due to Helicobacter pylori (n = 61, 75.3%), reactive CG (n = 14), and autoimmune CG (n = 6). The gastritis was located in the stomach antrum (55.7%, n = 40), fundus (3.3%, n = 2), or both (41% n = 25). Median age at diagnosis was 35 years (14/80). This CG was associated with signs of stomach activity (27...
November 1, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/29313510/need-for-surgical-treatment-of-epilepsy-and-excision-of-tumors-and-post-traumatic-epileptogenic-lesions-in-kinshasa-rdc
#5
G Ntsambi-Eba, A Beltchika Kalubye, J P Kalala Okito
Surgery is a treatment to consider in epilepsy when the condition is refractory or epileptic events are related to a clearly identified brain abnormality. The tropical climate of the DRC explains the high risk of epilepsy and the potentially large number of refractory cases. The number of patients with epilepsy in Kinshasa is estimated to be at least 120 000, and almost one third may be refractory. Hence, the need to integrate the use of surgery in the treatment of this disease. Most neurosurgical techniques used for treating epilepsy are practiced with a neurosurgical microscope and neuronavigation...
November 1, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/29313478/schistosomiasis-and-infertility-in-east-africa
#6
Patricia A Woodall, Michael R Kramer
Case reports and pathology series suggest associations of female genital schistosomiasis (Schistosoma haematobium) with infertility and ectopic pregnancy. Differential geographic distribution of infertility is not explained by analyses of known risk factors. In this cross-sectional multilevel semi-ecologic study, interpolated prevalence maps for S. haematobium and Schistosoma mansoni in East Africa were created using data from two open-access Neglected Tropical Diseases Databases. Prevalence was extracted to georeferenced survey sample points for Demographic and Health Surveys for Ethiopia, Kenya, Tanzania, and Uganda for 2000 and 2010...
January 8, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29275044/functional-and-proteomic-comparison-of-bothrops-jararaca-venom-from-captive-specimens-and-the-brazilian-bothropic-reference-venom
#7
Iasmim Baptista de Farias, Karen de Morais-Zani, Caroline Serino-Silva, Sávio S Sant'Anna, Marisa M T da Rocha, Kathleen F Grego, Débora Andrade-Silva, Solange M T Serrano, Anita M Tanaka-Azevedo
Snake venom is a variable phenotypic trait, whose plasticity and evolution are critical for effective antivenom production. A significant reduction of the number of snake donations to Butantan Institute (São Paulo, Brazil) occurred in recent years, and this fact may impair the production of the Brazilian Bothropic Reference Venom (BBRV). Nevertheless, in the last decades a high number of Bothrops jararaca specimens have been raised in captivity in the Laboratory of Herpetology of Butantan Institute. Considering these facts, we compared the biochemical and biological profiles of B...
December 21, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/29237707/buruli-ulcer-a-prototype-for-ecosystem-related-infection-caused-by-mycobacterium-ulcerans
#8
REVIEW
Dezemon Zingue, Amar Bouam, Roger B D Tian, Michel Drancourt
Buruli ulcer is a noncontagious disabling cutaneous and subcutaneous mycobacteriosis reported by 33 countries in Africa, Asia, Oceania, and South America. The causative agent, Mycobacterium ulcerans, derives from Mycobacterium marinum by genomic reduction and acquisition of a plasmid-borne, nonribosomal cytotoxin mycolactone, the major virulence factor. M. ulcerans-specific sequences have been readily detected in aquatic environments in food chains involving small mammals. Skin contamination combined with any type of puncture, including insect bites, is the most plausible route of transmission, and skin temperature of <30°C significantly correlates with the topography of lesions...
January 2018: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/29216911/dynamic-expression-of-cytokine-and-transcription-factor-genes-during-experimental-fasciola-gigantica-infection-in-buffaloes
#9
Wei Shi, Zhi-Yong Wei, Hany M Elsheikha, Fu-Kai Zhang, Zhao-An Sheng, Ke-Jing Lu, Dong-Ying Wang, Wei-Yi Huang, Xing-Quan Zhu
BACKGROUND: Determining the mechanisms involved in the immune-pathogenesis of the tropical liver fluke, Fasciola gigantica, is crucial to the development of any effective therapeutic intervention. Here, we examined the differential gene expression of cytokines and transcription factors in the liver of F. gigantica-infected buffaloes, over the course of infection. METHODS: Water buffaloes (swamp type) were infected orally with 500 F. gigantica encysted metacercariae...
December 8, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29165211/case-report-myiasis-due-to-cochliomyia-hominivorax-and-dermatobia-hominis-clinical-and-pathological-differences-between-two-species-in-northern-peru
#10
Virgilio E Failoc-Rojas, Carolina Molina-Ayasta, Jaime Salazar-Zuloeta, Abel Samamé, Heber Silva-Díaz
Infestations caused by fly larvae (Myiasis) have been observed in patients with risk factors and in tropical zones. The aim of our study was to describe the clinical and epidemiological aspects and the risk factors associated with the occurrence of obligatory myiasis, as well as the therapeutic approach to patients. We identified the cases of myiasis diagnosed in two referral hospitals in northern Peru from January 2012 to December 2015 and included patients in whom larval development and a compatible clinical profile were observed...
November 20, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29127993/molecular-prevalence-risk-factors-assessment-and-haemato-biochemical-alterations-in-hepatozoonosis-in-dogs-from-punjab-india
#11
Kaushlendra Singh, Harkirat Singh, Nirbhay Kumar Singh, Neeraj Kashyap, Naresh Kumar Sood, Shitanshu Shekar Rath
Hepatozoonosis caused by Hepatozoon canis is an important tick-borne disease of dogs in tropical and sub-tropical regions throughout the world. In the present study evaluation of blood samples collected from 225 dogs presented at Small Animal Clinics, GADVASU, Ludhiana, Punjab (India) was done for the presence of H. canis by PCR based assay targeting a portion of 18S rRNA gene. Of the total samples subjected to PCR, an amplicon of 666bp was detected in 13.78% samples whereas, routine blood smear examination revealed gamonts in 5...
December 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/29124010/positive-fecal-occult-blood-test-as-a-diagnostic-cue-for-schistosoma-mansoni-infection-in-a-developed-country
#12
Itaru Nakamura, Kenji Yagi, Takashi Kumagai, Nobuo Ohta
The rise in eco-tourism and travel off the beaten track have increased numbers of tourists with schistosomiasis which is seldom seen in developed countries, although this disease is considered a neglected tropical disease especially in poor communities. A Guinean male living in Japan was seen complaining of severe constipation. He was positive for fecal occult blood (FOB) and underwent colonoscopy. Colonoscopy showed petechiae of the rectal mucosa, with pathologic examination of biopsy tissue showing calcified eggs of the genus Schistosoma...
2017: IDCases
https://www.readbyqxmd.com/read/29117212/quantitative-label-free-proteomic-analysis-of-human-urine-to-identify-novel-candidate-protein-biomarkers-for-schistosomiasis
#13
Olugbenga Samson Onile, Bridget Calder, Nelson C Soares, Chiaka I Anumudu, Jonathan M Blackburn
BACKGROUND: Schistosomiasis is a chronic neglected tropical disease that is characterized by continued inflammatory challenges to the exposed population and it has been established as a possible risk factor in the aetiology of bladder cancer. Improved diagnosis of schistosomiasis and its associated pathology is possible through mass spectrometry to identify biomarkers among the infected population, which will influence early detection of the disease and its subtle morbidity. METHODOLOGY: A high-throughput proteomic approach was used to analyse human urine samples for 49 volunteers from Eggua, a schistosomiasis endemic community in South-West, Nigeria...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29104539/annonaceae-breaking-the-wall-of-inflammation
#14
REVIEW
Ali Attiq, Juriyati Jalil, Khairana Husain
Inventories of tropical forests have listed Annonaceae as one of the most diverse plant families. For centuries, it is employed in traditional medicines to cure various pathological conditions including snakebite, analgesic, astringent, diarrhea, dysentery, arthritis pain, rheumatism, neuralgia, and weight loss etc. Phytochemical analysis of Annonaceae family have reported the occurrence of alkaloids, flavonoids, triterpenes, diterpenes and diterpene flavone glycosides, sterols, lignans, and annonaceous acetogenin characteristically affiliated with Annonaceae sp...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29095820/-omic-investigations-of-protozoa-and-worms-for-a-deeper-understanding-of-the-human-gut-parasitome
#15
REVIEW
Valeria Marzano, Livia Mancinelli, Giorgia Bracaglia, Federica Del Chierico, Pamela Vernocchi, Francesco Di Girolamo, Stefano Garrone, Hyppolite Tchidjou Kuekou, Patrizia D'Argenio, Bruno Dallapiccola, Andrea Urbani, Lorenza Putignani
The human gut has been continuously exposed to a broad spectrum of intestinal organisms, including viruses, bacteria, fungi, and parasites (protozoa and worms), over millions of years of coevolution, and plays a central role in human health. The modern lifestyles of Western countries, such as the adoption of highly hygienic habits, the extensive use of antimicrobial drugs, and increasing globalisation, have dramatically altered the composition of the gut milieu, especially in terms of its eukaryotic "citizens...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29049977/syk-gtp-rac-1-mediated-immune-stimulatory-effect-of-cuscuta-epithymum-ipomoea-batata-and-euphorbia-hirta-plant-extracts
#16
Vanitha Sagar Sudam, Ajay Godwin Potnuri, N J Prameela Subhashini
Polymorphonuclear neutrophils (PMNn) are the pivotal mediators of phagocytosis. In addition to neutropenia, impaired neutrophilic function is associated with pathological conditions and immuno-deficiencies. Henceforth, Immuno-stimulatory strategies targeting neutrophilic function are indeed powerful tools in combating obstinate infections. In appreciation towards the usefulness of herbal medicines in therapeutic scenario, the present study was carried out to analyse the immuno-stimulatory effect of Cuscuta epithymum, Ipomoea batata and Euphorbia hirta using in-vitro and in-vivo rodent experimental models...
October 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29018005/the-clinical-presentation-of-subcutaneous-phaeohyphomycosis-a-case-series-from-yetebon-ethiopia
#17
Rachel B Kang, Devin C Simonson, Sarah E Stoner, William A Agger
Subcutaneous phaeohyphomycosis is a chronic fungal infection usually found on the lower extremity and feet of agricultural workers in the tropics. It can present with various skin manifestations, verrucous to nodular plaques, and is caused by multiple species of fungi. Laboratory confirmation requires skin samples for pathology and fungal cultures. Cure, often difficult in resource-poor countries, requires months of antifungal therapy. We describe the cases of 3 men from Ethiopia who were seen and are being treated by American doctors who traveled there on a medical mission...
October 10, 2017: Clinical Medicine & Research
https://www.readbyqxmd.com/read/28994540/-protective-effect-of-shuyu-yiban-decoction-on-atherosclerosis-in-rats-induced-by-chronic-unpredictable-mild-stress
#18
Xiao-Jun Zheng, Zhi-Qiang Hu, Shu-Wei Luan, Ran Li, Yun Li, Jian-Liang Li, Yu-Jie Li, Xiao-Xin Zhu
Shuyu Yiban decoction(SYYB) has significant effect in treating the patients with coronary heart disease combined with chronic psychological stress. In this study, in order to observe the effects of SYYB on early formation of atherosclerosis(As) and inflammation response induced by chronic psychological stress, high-fat diet+intraperitoneal injections of Vitamin D3 were given to establish As early lesion models, and based on these models, chronic unpredictable mild stress(CUMS) was used to observe whether the chronic psychological stress could increase coronary atherosclerotic lesions investigate the intervention effect of SYYB(6...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28991665/spinal-cord-anteroposterior-atrophy-in-ham-tsp-magnetic-resonance-imaging-and-neuropathological-analyses
#19
Akitoshi Taniguchi, Hitoshi Mochizuki, Atsushi Yamashita, Kazutaka Shiomi, Yujiro Asada, Masamitsu Nakazato
To evaluate the spinal cord atrophy that occurs in HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), we conducted magnetic resonance imaging (MRI) and pathological analyses. In the MRI study, 15 patients with HAM/TSP and 20 age-matched normal control subjects were enrolled. Anteroposterior and transverse distances and cross-sectional areas were measured and calculated at the C2, C4, C6, T2, and T6 vertebral levels. In the pathological study, spinal cord autopsy specimens were compared between a HAM/TSP case and an adult T cell leukemia/lymphoma case...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28988681/pathophysiology-of-leishmania-infection-during-pregnancy
#20
REVIEW
Brandon A Berger, Allison H Bartlett, Nancy Gore Saravia, Norma Galindo Sevilla
The pathological processes resulting from parasitic infection are known to have important impacts on the mother child dyad during pregnancy. The roles of parasite transmission and the maternal immune response have been described in diseases such as malaria, toxoplasmosis, and trypanosomiasis. However, the impact of parasites of the genus Leishmania, etiological agents of the neglected tropical diseases tegumentary leishmaniasis (TL) and visceral leishmaniasis (VL), is comparatively less well known, though it is an increasingly recognized concern for infected mothers and their fetuses...
October 4, 2017: Trends in Parasitology
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