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https://www.readbyqxmd.com/read/28641877/-update-on-cutaneous-dirofilariasis
#1
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
#2
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
#3
REVIEW
Giovanni Benelli, Alice Caselli, Graziano Di 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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/28504838/human-innate-lymphoid-cells-ilcs-in-filarial-infections
#8
Sandra Bonne-Année, Thomas B Nutman
Filarial infections are characteristically chronic and can cause debilitating diseases governed by parasite-induced innate and adaptive immune responses. Filarial parasites traverse or establish niches in the skin (migrating infective larvae), in non-mucosal tissues (adult parasite niche) and in the blood or skin (circulating microfilariae) where they intersect with the host immune response. While several studies have demonstrated that filarial parasites and their antigens can modulate myeloid cells (monocyte, macrophage, and dendritic cell subsets), T- and B-lymphocytes and skin resident cell populations the role of innate lymphoid cells during filarial infections has only recently emerged...
May 15, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28494332/polymorphism-in-abc-transporter-genes-of-dirofilaria-immitis
#9
Thangadurai Mani, Catherine Bourguinat, Roger K Prichard
Dirofilaria immitis, a filarial nematode, causes dirofilariasis in dogs, cats and occasionally in humans. Prevention of the disease has been mainly by monthly use of the macrocyclic lactone (ML) endectocides during the mosquito transmission season. Recently, ML resistance has been confirmed in D. immitis and therefore, there is a need to find new classes of anthelmintics. One of the mechanisms associated with ML resistance in nematodes has been the possible role of ATP binding cassette (ABC) transporters in reducing drug concentrations at receptor sites...
April 29, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28493920/haemolytic-activity-of-soil-from-areas-of-varying-podoconiosis-endemicity-in-ethiopia
#10
Jennifer S Le Blond, Peter J Baxter, Dhimiter Bello, Jennifer Raftis, Yordanos B Molla, Javier Cuadros, Gail Davey
BACKGROUND: Podoconiosis, non-filarial elephantiasis, is a non-infectious disease found in tropical regions such as Ethiopia, localized in highland areas with volcanic soils cultivated by barefoot subsistence farmers. It is thought that soil particles can pass through the soles of the feet and taken up by the lymphatic system, leading to the characteristic chronic oedema of the lower legs that becomes disfiguring and disabling over time. METHODS: The close association of the disease with volcanic soils led us to investigate the characteristics of soil samples in an endemic area in Ethiopia to identify the potential causal constituents...
2017: PloS One
https://www.readbyqxmd.com/read/28491315/subcutaneous-dirofilariasis-caused-by-dirofilaria-nochtiella-repens-in-sri-lanka-a-potential-risk-of-transmitting-human-dirofilariasis
#11
Nayana Gunathilaka, Shirom Siriwardana, Lakmini Wijesooriya, Gayana Gunaratne, Nilanga Perera
OBJECTIVE: Dirofilariasis is a parasitic infection caused by filarial nematodes belonging to the genus Dirofilaria. Human dirofilariasis due to Dirofilaria repens has been widely reported from European countries. Sri Lanka is the most affected country in Asia with an infection rate of almost 60% in dog population. However, human infection of D. repens remains undiagnosed and many of the cases are not scientifically documented. Therefore, the objective of the present investigation is to document the presence of dirofilariasis infections in humans...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28490801/dendritic-cells-provide-a-therapeutic-target-for-synthetic-small-molecule-analogues-of-the-parasitic-worm-product-es-62
#12
Felicity E Lumb, James Doonan, Kara S Bell, Miguel A Pineda, Marlene Corbet, Colin J Suckling, Margaret M Harnett, William Harnett
ES-62, a glycoprotein secreted by the parasitic filarial nematode Acanthocheilonema viteae, subverts host immune responses towards anti-inflammatory phenotypes by virtue of covalently attached phosphorylcholine (PC). The PC dictates that ES-62 exhibits protection in murine models of inflammatory disease and hence a library of drug-like PC-based small molecule analogues (SMAs) was synthesised. Four sulfone-containing SMAs termed 11a, 11e, 11i and 12b were found to reduce mouse bone marrow-derived dendritic cell (DC) pathogen-associated molecular pattern (PAMP)-induced pro-inflammatory cytokine production, inhibit NF-κB p65 activation, and suppress LPS-induced up-regulation of CD40 and CD86...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28490339/distribution-and-phylogeny-of-wolbachia-strains-in-wild-mosquito-populations-in-sri-lanka
#13
N W Nalaka P Nugapola, W A Priyanka P De Silva, S H P Parakrama Karunaratne
BACKGROUND: Wolbachia are a group of maternally inherited intracellular bacteria known to be widespread among arthropods. Infections with Wolbachia cause declines of host populations, and also induce host resistance to a wide range of pathogens. Over the past few decades, researchers were curious to use Wolbachia as a biological tool to control mosquito vectors. During the present study, assessment of the prevalence of Wolbachia infections among wild mosquito populations in Sri Lanka where mosquito-borne diseases are a major health concern, was carried out for the first time...
May 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28488945/tropical-pulmonary-eosinophilia-masquerading-as-asthma-in-a-5-year-old-girl
#14
Shivani Randev, Pankaj Kumar, Prabhjot Dhillon, Geetanjali Jindal, Vishal Guglani
Tropical pulmonary eosinophilia (TPE) is an exaggerated immunological response to filarial antigens mainly seen in adults in endemic areas and is uncommonly reported in children. The diagnosis is frequently delayed as it mimics asthma clinically, while the chest radiograph might show miliary mottling which is often confused with that in pulmonary tuberculosis. A 5-year-old girl presented with episodes of nocturnal cough, wheeze, low grade fever and breathlessness for the previous 4 months and was being treated for asthma...
May 10, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28486498/migratory-phase-of-litomosoides-sigmodontis-filarial-infective-larvae-is-associated-with-pathology-and-transient-increase-of-s100a9-expressing-neutrophils-in-the-lung
#15
Gregory Karadjian, Frédéric Fercoq, Nicolas Pionnier, Nathaly Vallarino-Lhermitte, Emilie Lefoulon, Adélaïde Nieguitsila, Sabine Specht, Leo M Carlin, Coralie Martin
Filarial infections are tropical diseases caused by nematodes of the Onchocercidae family such as Mansonella perstans. The infective larvae (L3) are transmitted into the skin of vertebrate hosts by blood-feeding vectors. Many filarial species settle in the serous cavities including M. perstans in humans and L. sigmodontis, a well-established model of filariasis in mice. L. sigmodontis L3 migrate to the pleural cavity where they moult into L4 around day 9 and into male and female adult worms around day 30. Little is known of the early phase of the parasite life cycle, after the L3 is inoculated in the dermis by the vector and enters the afferent lymphatic vessels and before the moulting processes in the pleural cavity...
May 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28482929/ivermectin-induced-steven-johnsons-syndrome-case-report
#16
Desmond Aroke, Diego Nitcheu Tchouakam, Alexis Tazinya Awungia, Sylvester Yari Mapoh, Stewart Ndutard Ngassa, Benjamin Momo Kadia
BACKGROUND: Stevens-Johnson syndrome is one of the manifestations of mucocutaneous adverse drug reactions. Although antimicrobials are responsible for greater than 50% of these adverse drug reactions, there is no documented case implicating ivermectin as the culprit. A 38 year old adult Cameroonian male presented to our health facility with facial rash, painful oral sores, black eschars on lips and red tearing eyes 3 days following ingestion of ivermectin received during a nationwide anti-filarial campaign...
May 8, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28481237/anti-onchocerca-and-anti-caenorhabditis-activity-of-a-hydro-alcoholic-extract-from-the-fruits-of-acacia-nilotica-and-some-proanthocyanidin-derivatives
#17
Jacqueline Dikti Vildina, Justin Kalmobe, Boursou Djafsia, Thomas J Schmidt, Eva Liebau, Dieudonne Ndjonka
Acacia nilotica fruits with high tannin content are used in the northern parts of Cameroon as anti-filarial remedies by traditional healers. In this study, the hydro-alcoholic fruit extract (crude extract (CE)) and, one of the main constituents in its most active fractions, (+)-catechin-3-O-gallate (CG), as well as four related proanthocyanidins, (-)-epicatechin-3-O-gallate (ECG), (+)-gallocatechin (GC), (-)-epigallocatechin (EGC) and (-)-epigallocatechin-3-O-gallate (EGCG), were assessed for their potential in vitro anthelmintic properties against the free-living model organism Caenorhabditis elegans and against the cattle filarial parasite Onchocerca ochengi...
May 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28459012/stage-specific-antibody-response-against-two-larval-stages-of-brugia-malayi-in-different-clinical-spectra-of-brugian-filariasis
#18
Praveen Kumar Tripathi, Ramesh Chander Mahajan, Nancy Malla, Naveen Kumar, Shailja Misra Bhattacharya, Ranganatha Krishna Shinoy, Abhishek Mewara, Rakesh Sehgal
CONTEXT: T-cell hypo-responsiveness in microfilaria (Mf) carriers against the microfilarial stage antigen of Brugia malayi has been described, but no study has been carried out to assess antibody dynamics against stage-specific antigens. AIM: The work was carried out with the aim to assess stage-specific antibody responses against L3 and microfilarial stage antigens in brugian filariasis in an endemic area. SETTING AND DESIGN: Patients with different clinical spectra of brugian filariasis were recruited to evaluate antibody responses to brugian antigens...
January 2017: Tropical Parasitology
https://www.readbyqxmd.com/read/28453850/a-novel-ligand-of-toll-like-receptor-4-from-the-sheath-of-wuchereria-bancrofti-microfilaria-induces-proinflammatory-response-in-macrophages
#19
Suprabhat Mukherjee, Sandip Mukherjee, Tushar K Maiti, Samir Bhattacharya, Santi P Sinha Babu
Background.: Lymphatic filariasis, frequently caused from Wuchereria bancrofti infection, is endemic in several parts of the globe and responsible for human health problems and socioeconomic loss to a large extent. Inflammatory consequences originating from host-parasite interaction play a major role in the disease pathology and allied complications. The identity of the key mediator of this process is yet unknown in filarial research. Methods.: Microfilarial protein (MfP) was isolated from the sheath of W...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28435138/proteomic-analysis-of-a-mosquito-host-cell-response-to-persistent-wolbachia-infection
#20
Gerald Baldridge, Lee Ann Higgins, Bruce Witthuhn, Todd Markowski, Abigail Baldridge, Anibal Armien, Ann Fallon
Wolbachia pipientis, an obligate intracellular bacterium associated with arthropods and filarial worms, is a target for filarial disease treatment and provides a gene drive agent for insect vector population suppression/replacement. We compared proteomes of Aedes albopictus mosquito C/wStr1 cells persistently infected with Wolbachia strain wStr, relative to uninfected C7-10 control cells. Among approximately 2500 proteins, iTRAQ data identified 815 differentially abundant proteins. As functional classes, energy and central intermediary metabolism proteins were elevated in infected cells, while suppressed proteins with roles in host DNA replication, transcription and translation suggested that Wolbachia suppresses pathways that support host cell growth and proliferation...
April 21, 2017: Research in Microbiology
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