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https://www.readbyqxmd.com/read/28736941/in-vivo-neutralization-of-%C3%AE-4-and-%C3%AE-7-integrins-inhibits-eosinophil-trafficking-and-prevents-lung-injury-during-tropical-pulmonary-eosinophilia-in-mice
#1
Pankaj Sharma, Aditi Sharma, Mrigank Srivastava
Integrins regulate leukocyte trafficking during homeostasis and inflammatory conditions. However, the role of α4 and β7 integrins in guiding eosinophil transmigration into the lungs during filarial manifestation of Tropical Pulmonary Eosinophilia (TPE) has not been explored. In this study, mice exhibiting TPE manifestations were administered with in vivo neutralizing antibodies against integrins α4 and β7 or their combination and immuno-pathological parameters were evaluated. Results show an intact lung barrier, significantly lower lung inflammation and reduced eosinophil counts in the Bronchoalveolar lavage fluid and lungs of mice receiving anti-α4(+) β7 treatment...
July 24, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28735573/chemoattractant-activity-of-tris-hydroxymethyl-aminomethane-for-brugia-pahangi-infective-third-stage-larvae
#2
Y Mitsui, K E Ureña-Tatis, Y Aoki
Urocanic acid (UCA) is known as a major chemoattractant for Strongyloides stercoralis infective third-stage larvae (L3). Since Brugia pahangi is a skin-penetrating parasitic nematode similar to S. stercoralis, UCA was expected to be a chemoattractant for B. pahangi L3. Thus, the chemoattractant activity of UCA for B. pahangi L3 was assessed. The chemotactic responses of B. pahangi L3 to UCA or acetic acid (CH3COOH) dissolved in amine solutions were assessed using an agar-plate assay. A test solution of 200 mm UCA dissolved in aqueous 270 mm tris(hydroxymethyl)aminomethane (Tris) significantly attracted B...
July 24, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28727765/defining-the-target-and-the-effect-of-imatinib-on-the-filarial-c-abl-homologue
#3
Elise M O'Connell, Olena Kamenyeva, Sara Lustigman, Aaron Bell, Thomas B Nutman
BACKGROUND: Previously we demonstrated the micro- and macrofilaricidal properties of imatinib in vitro. Here we use electron and multiphoton microscopy to define the target of imatinib in the adult and microfilarial stages of Brugia malayi, and assess the effects of pharmacologically relevant levels of imatinib on the adult parasites. METHODS: After fixation of adult B. malayi males and females, sections were stained with polyclonal rabbit anti-c-Abl antibody (or isotype control) and imaged with multiphoton fluorescent microscopy...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28724822/an-unusual-presentation-of-lacrimal-gland-dirofilariasis
#4
Amit Sethi, Vani Puri, Natasha Dogra
Dirofilariasis is a helminthic infection caused by filarial parasite of the genus Dirofilaria. It is a common zoonotic disease mostly affecting canines and uncommon in humans. It is endemic to Mediterranean countries, with few reports from other parts of the world. The clinical forms in humans are pulmonary, subcutaneous, and ocular. Ocular involvement is rare. We report a case of lacrimal gland dirofilariasis, an unusual ocular presentation which masquerades as a lacrimal gland tumor. Ours would be the third reported case in the world and first in India...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28722605/characterizing-reactivity-to-onchocerca-volvulus-antigens-in-multiplex-bead-assays
#5
Karla R Feeser, Vitaliano Cama, Jeffrey W Priest, Elizabeth A Thiele, Ryan E Wiegand, Thomson Lakwo, Sendeaw M Feleke, Paul T Cantey
Multiplex bead assays (MBAs) may provide a powerful integrated tool for monitoring, evaluation, and post-elimination surveillance of onchocerciasis and co-endemic diseases; however, the specificity and sensitivity of Onchocerca volvulus antigens have not been characterized within this context. An MBA was developed to evaluate three antigens (OV-16, OV-17, and OV-33) for onchocerciasis. Receiver operating characteristics (ROC) analyses were used to characterize antigen performance using a panel of 610 specimens: 109 O...
July 3, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719274/risk-factors-for-podoconiosis-kamwenge-district-western-uganda-september-2015
#6
Christine Kihembo, Ben Masiira, William Z Lali, Gabriel K Matwale, Joseph K B Matovu, Frank Kaharuza, Alex R Ario, Immaculate Nabukenya, Issa Makumbi, Monica Musenero, Bao-Ping Zhu, Miriam Nanyunja
AbstractPodoconiosis, a noninfectious elephantiasis, is a disabling neglected tropical disease. In August 2015, an elephantiasis case-cluster was reported in Kamwenge District, western Uganda. We investigated to identify the disease's nature and risk factors. We defined a suspected podoconiosis case as onset in a Kamwenge resident of bilateral asymmetrical lower limb swelling lasting ≥ 1 month, plus ≥ 1 of the following associated symptoms: skin itching, burning sensation, plantar edema, lymph ooze, prominent skin markings, rigid toes, or mossy papillomata...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28717950/specific-antibody-detection-in-dogs-with-filarial-infections
#7
Deborah E Joekel, Simone Maier, Katja Huggel, Roland Schaper, Peter Deplazes
No abstract text is available yet for this article.
July 17, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28705255/filarioid-infections-in-wild-carnivores-a-multispecies-survey-in-romania
#8
Angela Monica Ionică, Ioana Adriana Matei, Gianluca D'Amico, Jana Ababii, Aikaterini Alexandra Daskalaki, Attila D Sándor, Dorin Valter Enache, Călin Mircea Gherman, Andrei Daniel Mihalca
BACKGROUND: Filarioids are vector-borne parasitic nematodes of vertebrates. In Europe, eight species of filarioids, including zoonotic species, have been reported mainly in domestic dogs, and occasionally in wild carnivores. In Romania, infections with Dirofilaria spp. and Acanthocheilonema reconditum are endemic in domestic dogs. Despite the abundant populations of wild carnivores in the country, their role in the epidemiology of filarioid parasites remains largely unknown. The aim of the present study was to assess the host range, prevalence and distribution of filarioid infections in wild carnivores present in Romania...
July 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28679443/mosquitoes-in-the-danube-delta-searching-for-vectors-of-filarioid-helminths-and-avian-malaria
#9
Angela Monica Ionică, Carina Zittra, Victoria Wimmer, Natascha Leitner, Jan Votýpka, David Modrý, Andrei Daniel Mihalca, Hans-Peter Fuehrer
BACKGROUND: Mosquitoes are arthropods of major importance to animal and human health because they are able to transmit pathogenic agents such as filarioids (Spirurida), vector-borne nematodes, which reside in the tissues of vertebrates. In Europe, recent research has mostly focused on mosquito-borne zoonotic species, while others remain neglected. Mosquitoes are also vectors of avian malaria, which has an almost worldwide distribution, and is caused by several Plasmodium species and lineages, the most common being P...
July 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28673370/preface-glasgow-encounters-with-tropical-diseases
#10
Francis E G Cox
The period 1875-1925 was remarkable in the history of parasitology mainly for the elucidation of the life cycles of parasites causing important parasitic diseases and the incrimination of vectors in their transmission. These discoveries were made by a small number of scientists working in the tropics a number of whom were Scots. Sir Patrick Manson, the discoverer of the mosquito transmission of filarial worms, was instrumental in directly or indirectly encouraging other Scots including Douglas Argyll-Robertson, David Blacklock, David Bruce, David Cunningham, Robert Leiper, William Leishman, George Low, Muriel Robertson and Ronald Ross, who all made significant discoveries across a wide spectrum of tropical diseases...
July 4, 2017: Parasitology
https://www.readbyqxmd.com/read/28662054/first-evidence-of-lymphatic-filariasis-transmission-interruption-in-cameroon-progress-towards-elimination
#11
Hugues C Nana-Djeunga, Magellan Tchouakui, Guy R Njitchouang, Jules B Tchatchueng-Mbougua, Philippe Nwane, André Domche, Jean Bopda, Stève Mbickmen-Tchana, Julie Akame, Ann Tarini, Emilienne Epée, Benjamin D Biholong, Yaobi Zhang, Jean J Tougoue, Achille Kabore, Flobert Njiokou, Joseph Kamgno
BACKGROUND: Lymphatic filariasis (LF) is among the 10 neglected tropical diseases targeted for control or elimination by 2020. For LF elimination, the World Health Organization (WHO) has proposed a comprehensive strategy including (i) interruption of LF transmission through large-scale annual treatment (or mass drug administration (MDA)) of all eligible individuals in endemic areas, and (ii) alleviation of LF-associated suffering through morbidity management and disability prevention...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28658262/mycobacteria-induce-tpl-2-mediated-il-10-in-il-4-generated-alternatively-activated-macrophages
#12
Soumya Chatterjee, Kawsar R Talaat, Emily E van Seventer, Carl G Feng, Alan L Scott, Anne Jedlicka, Amanda Dziedzic, Thomas B Nutman
IL-4 drives expansion of Th2 cells that cause generation of alternatively activated macrophages (AAMs). Filarial infections are established early in life, induce increased IL-4 production are co-endemic with tuberculosis (TB). We sought to understand, therefore, how mycobacteria are handled in the context of IL-4-induced AAM. Comparing IL-4 generated in vitro monocyte derived human AAMs to LPS and IFN-γ generated classically macrophages (CAMs), both infected with mycobacteria (BCG), we demonstrated increased early BCG uptake and increased IL-10 production in AAMs compared to CAMs...
2017: PloS One
https://www.readbyqxmd.com/read/28648713/zoonotic-infection-with-onchocerca-dewittei-japonica-in-an-11-year-old-boy-in-kansai-region-western-honshu-japan
#13
Shigehiko Uni, Masako Fukuda, Kou Ogawa, Yvonne Ai-Lian Lim, Takeshi Agatsuma, Naruemon Bunchom, Weerachai Saijuntha, Yasushi Otsuka, Subha Bhassu, Ahmad Syihan Mat Udin, Nur Afiqah Zainuri, Hasmahzaiti Omar, Jun Nakatani, Makoto Matsubayashi, Haruhiko Maruyama, Rosli Ramli, Mohd Sofian Azirun, Hiroyuki Takaoka
An 11-year-old boy living in Otsu City, Shiga Prefecture, Kansai Region, Western Honshu, Japan had zoonotic onchocercosis. The patient developed a painful swelling on the little finger of his left hand. The worm detected in the excised mass had external transverse ridges but did not have inner striae in the cuticle. On the basis of the parasite's histopathological characteristics, the causative agent was identified as a female Onchocerca dewittei japonica (Spirurida: Onchocercidae). The species of the filarial parasite was confirmed by sequencing the cox1 gene of the parasite...
June 23, 2017: Parasitology International
https://www.readbyqxmd.com/read/28641877/-update-on-cutaneous-dirofilariasis
#14
M Benzaquen, E Marmottant, P Parola, P Berbis
Dirofilariasis is a worldwide zoonotic infection that rarely affects humans and is caused by filarial nematodes of the genus Diroflaria transmitted by mosquitoes. Cutaneous dirofilariasis, due to D. repens, presents as inflammatory lesions that develop into subcutaneous nodules. These clinical symptoms may be consistent with Wells' cellulitis. Diagnosis of dirofilariasis involves demonstration of the presence of the nematode during skin biopsy and identification of the worm through macroscopic, histological and PCR analysis...
June 19, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28598065/malignant-pleural-effusion-with-filariasis
#15
Ashutosh Chaturvedi, Arun Kumar
The occurrence of microfilaria in pleural fluid is rare. Filarial lung involvement occurs in the form of Tropical Pulmonary Eosinophilia with pulmonary infiltrates and peripheral eosinophilia. We report a 74-year-old male patient, non smoker who was admitted to our hospital with breathlessness and chest discomfort of two weeks duration. He had, eosinophilia and deranged renal function. X-ray chest revealed massive left sided pleural effusion. Pleural fluid analysis revealed atypical cells and pleural fluid cytology showed microfilaria (Wuchereria bancrofti), which were also found on peripheral smear...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28587840/control-of-biting-lice-mallophaga-a-review
#16
REVIEW
Giovanni Benelli, Alice Caselli, Graziano Di Giuseppe, Angelo Canale
The chewing lice (Mallophaga) are common parasites of different animals. Most of them infest terrestrial and marine birds, including pigeons, doves, swans, cormorants and penguins. Mallophaga have not been found on marine mammals but only on terrestrial ones, including livestock and pets. Their bites damage cattle, sheep, goats, horses and poultry, causing itch and scratch and arousing phthiriasis and dermatitis. Notably, Mallophaga can vector important parasites, such as the filarial heartworm Sarconema eurycerca...
June 3, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28579911/impact-of-the-lymphatic-filariasis-control-program-towards-elimination-of-filariasis-in-vanuatu-1997-2006
#17
Tammy Allen, Fasihah Taleo, Patricia M Graves, Peter Wood, George Taleo, Margaret C Baker, Mark Bradley, Kazuyo Ichimori
BACKGROUND: Lymphatic filariasis (LF) occurs when filarial parasites are transmitted to humans through mosquitoes. The filarial worms affect the lymphatic system which leads to abnormal enlargement of body parts, chronic pain, disability, and social discrimination. In 1999, a commitment was made to eliminate LF from the Pacific Region by 2010. The Pacific Program to Eliminate LF began, with Vanuatu being one of the 16 endemic countries included in this program. METHODS: In 1997/1998 a LF prevalence baseline survey was conducted to determine the need for mass drug administration (MDA) in Vanuatu...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/28527817/lymphatic-filariasis-elimination-efforts-in-rufiji-southeastern-tanzania-decline-in-circulating-filarial-antigen-prevalence-in-young-school-children-after-twelve-rounds-of-mass-drug-administration-and-utilization-of-long-lasting-insecticide-treated-nets
#18
Clarer Jones, Billy Ngasalla, Yahya A Derua, Donath Tarimo, Mwelecele N Malecela
BACKGROUND: Lymphatic filariasis (LF) is a parasitic infection transmitted by mosquito vectors, and in Sub-Saharan Africa it is caused by the nematode Wuchereria bancrofti. The disease has been targeted for global elimination with the annual mass drug administration (MDA) strategy. Vector control is known to play an important complementary role to MDA in reducing the transmission of LF. The effects of an MDA and insecticide-treated net intervention implemented in an endemic area of southeastern Tanzania are reported here...
May 17, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28526036/molecular-characterization-of-dirofilaria-spp-circulating-in-portugal
#19
Cátia Ferreira, Ana Afonso, Manuela Calado, Isabel Maurício, Ana Margarida Alho, José Meireles, Luís Madeira de Carvalho, Silvana Belo
BACKGROUND: Dirofilariosis is a potentially zoonotic parasitic disease, mainly transmitted by mosquito vectors in many parts of the world. Data concerning the canine Dirofilaria species currently circulating in Portugal is scarce. Thereby, a large-scale study was conducted to determine the Dirofilaria spp. present in Portugal, based on a molecular approach, and also to optimize a reliable and highly sensitive species-specific polymerase chain reaction (PCR) assay that could be used for the simultaneous detection and differentiation of Dirofilaria immitis, Dirofilaria repens, and other concurrent filarial species in animal reservoirs...
May 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28507911/filariasis-orchitis-differential-for-acute-scrotum-pathology
#20
Karmon M Janssen, Cornelia J Willis, Mark Anderson, Mary S Gelnett, Emily L Wickersham, Timothy C Brand
Granulomatous Orchitis secondary to lymphatic filiarisis is a rare diagnosis within the United States. We report a case of a 22yo Male from Sri Lanka, with a new onset scrotal swelling and palpable right testicular mass. Ultrasound identified a 1 cm right testicular mass with signs of tunica albuginea invasion. A right inguinal radical orchiectomy was performed and pathology showed Filarial orchitis. This report describes the detailed history, physical exam, and diagnostic workup and treatment options for a rare entity for acute scrotal pathology...
July 2017: Urology Case Reports
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