Database : MEDLINE
Search on : necatoriasis [Words]
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[PMID]: 25745677
[Ti] Title:Soil-transmitted helminthiases: number of children treated in 2013.
[So] Source:Wkly Epidemiol Rec;90(10):89-94, 2015 Mar 6.
[Is] ISSN:0049-8114
[Cp] Country of publication:Switzerland
[La] Language:eng; fre
[Mh] MeSH terms primary: Ancylostomiasis/prevention & control
Anthelmintics/therapeutic use
Ascariasis/prevention & control
Necatoriasis/prevention & control
Primary Prevention/statistics & numerical data
Trichuriasis/prevention & control
[Mh] MeSH terms secundary: Adolescent
Albendazole/therapeutic use
Ancylostoma
Ancylostomiasis/transmission
Animals
Ascariasis/transmission
Ascaris lumbricoides
Child
Child, Preschool
Databases, Factual/statistics & numerical data
Global Health
Humans
Infant
Mebendazole/therapeutic use
Necator americanus
Necatoriasis/transmission
Soil/parasitology
Trichuriasis/transmission
Trichuris
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Anthelmintics); 0 (Soil); 81G6I5V05I (Mebendazole); F4216019LN (Albendazole)
[Em] Entry month:1505
[Js] Journal subset:IM
[Da] Date of entry for processing:150306
[St] Status:MEDLINE

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[PMID]: 23593570
[Au] Autor:Wang JX; Pan CS; Cui LW
[Ad] Address:Department of Microbiology, Xiamen Centre for Disease Control and Prevention, Xiamen 361021, Fujian, China ; School of Life Science, Xiamen University, Xiamen 361005, Fujian, China.
[Ti] Title:Application of a real-time PCR method for detecting and monitoring hookworm Necator americanus infections in Southern China.
[So] Source:Asian Pac J Trop Biomed;2(12):925-9, 2012 Dec.
[Is] ISSN:2221-1691
[Cp] Country of publication:China
[La] Language:eng
[Ab] Abstract:OBJECTIVE: To develop a quantitative PCR method for detecting hookworm infection and quantification. METHODS: A real-time PCR method was designed based on the intergenic region II of ribosomal DNA of the hookworm Necator americanus. The detection limit of this method was compared with the microscopy-based Kato-Katz method. The real-time PCR method was used to conduct an epidemiological survey of hookworm infection in southern Fujian Province of China. RESULTS: The real-time PCR method was specific for detecting Necator americanus infection, and was more sensitive than conventional PCR or microscopy-based method. A preliminary survey for hookworm infection in villages of Fujian Province confirmed the high prevalence of hookworm infections in the resident populations. In addition, the infection rate in women was significantly higher than that of in men. CONCLUSIONS: A real-time PCR method is designed, which has increased detection sensitivity for more accurate epidemiological studies of hookworm infections, especially when intensity of the infection needs to be considered.
[Mh] MeSH terms primary: DNA, Helminth/genetics
Microscopy
Necator americanus/isolation & purification
Necatoriasis/diagnosis
Nucleic Acid Amplification Techniques
Real-Time Polymerase Chain Reaction
[Mh] MeSH terms secundary: Animals
China/epidemiology
Female
Humans
Male
Necator americanus/genetics
Necatoriasis/epidemiology
Necatoriasis/genetics
Sensitivity and Specificity
Sentinel Surveillance
Sequence Analysis, DNA
Sex Distribution
[Pt] Publication type:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (DNA, Helminth)
[Em] Entry month:1505
[Js] Journal subset:IM
[Da] Date of entry for processing:130417
[St] Status:MEDLINE
[do] DOI:10.1016/S2221-1691(13)60001-5

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Clinical Trials Registry
PubMed Central Full text
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[PMID]: 24795483
[Au] Autor:Cantacessi C; Giacomin P; Croese J; Zakrzewski M; Sotillo J; McCann L; Nolan MJ; Mitreva M; Krause L; Loukas A
[Ad] Address:Department of Veterinary Medicine, University of Cambridge, United Kingdom Australian Institute of Tropical Health and Medicine, Queensland Tropical Health Alliance Laboratory, James Cook University, Cairns....
[Ti] Title:Impact of experimental hookworm infection on the human gut microbiota.
[So] Source:J Infect Dis;210(9):1431-4, 2014 Nov 1.
[Is] ISSN:1537-6613
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:The interactions between gastrointestinal parasitic helminths and commensal bacteria are likely to play a pivotal role in the establishment of host-parasite cross-talk, ultimately shaping the development of the intestinal immune system. However, little information is available on the impact of infections by gastrointestinal helminths on the bacterial communities inhabiting the human gut. We used 16S rRNA gene amplification and pyrosequencing to characterize, for the first time to our knowledge, the differences in composition and relative abundance of fecal microbial communities in human subjects prior to and following experimental infection with the blood-feeding intestinal hookworm, Necator americanus. Our data show that, although hookworm infection leads to a minor increase in microbial species richness, no detectable effect is observed on community structure, diversity or relative abundance of individual bacterial species.
[Mh] MeSH terms primary: Gastrointestinal Tract/microbiology
Microbiota
Necator americanus
Necatoriasis/microbiology
[Mh] MeSH terms secundary: Animals
Feces/microbiology
Feces/parasitology
Gastrointestinal Tract/immunology
Gastrointestinal Tract/parasitology
Humans
Microbiota/physiology
Necatoriasis/immunology
[Pt] Publication type:CLINICAL TRIAL; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1412
[Js] Journal subset:AIM; IM
[Da] Date of entry for processing:141014
[Cl] Clinical Trial:ClinicalTrial
[St] Status:MEDLINE
[do] DOI:10.1093/infdis/jiu256

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[PMID]: 24968666
[Au] Autor:Phuphisut O; Yoonuan T; Sanguankiat S; Chaisiri K; Maipanich W; Pubampen S; Komalamisra C; Adisakwattana P
[Ti] Title:Triplex polymerase chain reaction assay for detection of major soil-transmitted helminths, Ascaris lumbricoides, Trichuris trichiura, Necator americanus, in fecal samples.
[So] Source:Southeast Asian J Trop Med Public Health;45(2):267-75, 2014 Mar.
[Is] ISSN:0125-1562
[Cp] Country of publication:Thailand
[La] Language:eng
[Ab] Abstract:Ascaris lumbricoides, Trichuris trichiura, and Necator americanus are medically important soil-transmitted helminths (STHs) occurring frequently worldwide including Thailand. Fecal examination using a microscope has been recommended as the gold standard for diagnosis of STH infections, but suffers from low sensitivity. Recently, highly sensitive and specific assays, such as multiplex quantitative PCR, has been established, but the high cost and need for special instruments are still barriers limiting their applications in routine diagnosis. Therefore, a conventional multiplex PCR assay, with its lower cost and greater simplicity, was developed, for the simultaneous detection of STHs in fecal samples. The multiplex PCR assay was species-specific to the three STHs, and could detect one copy of DNA target. Compared with microscopic examination of fecal samples, sensitivity and specificity of the multiplex PCR was 87% and 83%, respectively. This multiplex PCR assay provides an alternative method for routine diagnosis of STHs infection, and might be applied for epidemiological studies of STHs in endemic areas.
[Mh] MeSH terms primary: Ascariasis/diagnosis
Multiplex Polymerase Chain Reaction
Necatoriasis/diagnosis
Soil/parasitology
Trichuriasis/diagnosis
[Mh] MeSH terms secundary: Animals
Ascariasis/parasitology
Ascaris lumbricoides/isolation & purification
Feces/parasitology
Humans
Necator americanus/isolation & purification
Necatoriasis/pathology
Sensitivity and Specificity
Thailand
Trichuriasis/parasitology
Trichuris/isolation & purification
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Soil)
[Em] Entry month:1407
[Js] Journal subset:IM
[Da] Date of entry for processing:140627
[St] Status:MEDLINE

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[PMID]: 24797001
[Ti] Title:Image of the month: Hookworm infection observed via a narrow-band imaging system.
[So] Source:Am J Gastroenterol;109(5):626, 2014 May.
[Is] ISSN:1572-0241
[Cp] Country of publication:United States
[La] Language:eng
[Mh] MeSH terms primary: Duodenoscopy
Narrow Band Imaging
Necator americanus/isolation & purification
Necatoriasis/diagnosis
[Mh] MeSH terms secundary: Adult
Animals
Humans
Male
[Pt] Publication type:CASE REPORTS; JOURNAL ARTICLE
[Em] Entry month:1406
[Js] Journal subset:IM
[Da] Date of entry for processing:140506
[St] Status:MEDLINE
[do] DOI:10.1038/ajg.2014.96

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[PMID]: 24493672
[Au] Autor:Gunawardena S; Gunawardena NK; Kahathuduwa G; Karunaweera ND; de Silva NR; Ranasinghe UB; Samarasekara SD; Nagodavithana KC; Rao RU; Rebollo MP; Weil GJ
[Ad] Address:Department of Parasitology, Faculty of Medicine, University of Colombo, Sri Lanka; Department of Parasitology, Faculty of Medicine, University of Kelaniya, Sri Lanka; Anti Filariasis Campaign, Ministry of Health, Sri Lanka; Department of Internal Medicine, Infectious Diseases Division, Washington University School of Medicine, St. Louis, Missouri; Centre for Neglected Tropical Diseases, Liverpool School of Tropical Medicine, United Kingdom.
[Ti] Title:Integrated school-based surveillance for soil-transmitted helminth infections and lymphatic filariasis in Gampaha district, Sri Lanka.
[So] Source:Am J Trop Med Hyg;90(4):661-6, 2014 Apr.
[Is] ISSN:1476-1645
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:We explored the practicality of integrating surveillance for soil-transmitted helminthiasis (STH, assessed by Kato-Katz) with transmission assessment surveys for lymphatic filariasis (LF) in two evaluation units (EUs) in Gampaha district, Sri Lanka (population 2.3 million). The surveys were performed 6 years after five annual rounds of mass drug administration with diethylcarbamazine and albendazole. Each transmission assessment survey tested children (N = 1,462 inland EU; 1,642 coastal EU) sampled from 30 primary schools. Low filarial antigenemia rates (0% and 0.1% for the inland and coastal EUs) suggest that LF transmission is very low in this district. The STH rates and stool sample participation rates were 0.8% and 61% (inland) and 2.8% and 58% (coastal). Most STH detected were low or moderate intensity Trichuris trichiura infections. The added cost of including STH testing was ∼$5,000 per EU. These results suggest that it is feasible to integrate school-based surveillance for STH and LF.
[Mh] MeSH terms primary: Antigens, Helminth/immunology
Elephantiasis, Filarial/epidemiology
Epidemiological Monitoring
Helminthiasis/epidemiology
School Health Services
[Mh] MeSH terms secundary: Animals
Ascariasis/epidemiology
Ascariasis/immunology
Ascariasis/transmission
Ascaris lumbricoides/immunology
Child
Elephantiasis, Filarial/immunology
Elephantiasis, Filarial/transmission
Feasibility Studies
Feces/parasitology
Helminthiasis/immunology
Helminthiasis/transmission
Humans
Necator americanus/immunology
Necatoriasis/epidemiology
Necatoriasis/immunology
Necatoriasis/transmission
Parasite Egg Count
School Health Services/economics
Soil/parasitology
Sri Lanka/epidemiology
Trichuriasis/epidemiology
Trichuriasis/immunology
Trichuriasis/transmission
Trichuris/immunology
Wuchereria bancrofti/immunology
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Antigens, Helminth); 0 (Soil)
[Em] Entry month:1405
[Js] Journal subset:AIM; IM
[Da] Date of entry for processing:140403
[St] Status:MEDLINE
[do] DOI:10.4269/ajtmh.13-0641

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[PMID]: 24676818
[Au] Autor:Inoue K; Ozaka S; Okamoto K; Ogawa R; Mizukami K; Okimoto T; Kodama M; Kobayashi T; Eshita Y; Hasegawa H; Murakami K
[Ad] Address:Department of Gastroenterology, Almeida Hospital, Oita, Japan....
[Ti] Title:Multiple infections with helminths--whipworm, hookworm, and roundworm.
[So] Source:Endoscopy;46 Suppl 1 UCTN:E117-8, 2014.
[Is] ISSN:1438-8812
[Cp] Country of publication:Germany
[La] Language:eng
[Mh] MeSH terms primary: Ascariasis/complications
Ascaris lumbricoides
Coinfection/parasitology
Necator americanus
Necatoriasis/complications
Trichuriasis/complications
Trichuris
[Mh] MeSH terms secundary: Aged, 80 and over
Anemia/etiology
Animals
Ascariasis/diagnosis
Endoscopy, Gastrointestinal
Female
Humans
Necatoriasis/diagnosis
Trichuriasis/diagnosis
[Pt] Publication type:CASE REPORTS; JOURNAL ARTICLE; VIDEO-AUDIO MEDIA
[Em] Entry month:1411
[Js] Journal subset:IM
[Da] Date of entry for processing:140328
[St] Status:MEDLINE
[do] DOI:10.1055/s-0034-1364887

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[PMID]: 24651493
[Au] Autor:Hasegawa H; Modrý D; Kitagawa M; Shutt KA; Todd A; Kalousová B; Profousová I; Petrzelková KJ
[Ad] Address:Department of Biology, Oita University, Yufu, Oita, Japan....
[Ti] Title:Humans and great apes cohabiting the forest ecosystem in central african republic harbour the same hookworms.
[So] Source:PLoS Negl Trop Dis;8(3):e2715, 2014 Mar.
[Is] ISSN:1935-2735
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:BACKGROUND: Hookworms are important pathogens of humans. To date, Necator americanus is the sole, known species of the genus Necator infecting humans. In contrast, several Necator species have been described in African great apes and other primates. It has not yet been determined whether primate-originating Necator species are also parasitic in humans. METHODOLOGY/PRINCIPAL FINDINGS: The infective larvae of Necator spp. were developed using modified Harada-Mori filter-paper cultures from faeces of humans and great apes inhabiting Dzanga-Sangha Protected Areas, Central African Republic. The first and second internal transcribed spacers (ITS-1 and ITS-2) of nuclear ribosomal DNA and partial cytochrome c oxidase subunit 1 (cox1) gene of mtDNA obtained from the hookworm larvae were sequenced and compared. Three sequence types (I-III) were recognized in the ITS region, and 34 cox1 haplotypes represented three phylogenetic groups (A-C). The combinations determined were I-A, II-B, II-C, III-B and III-C. Combination I-A, corresponding to N. americanus, was demonstrated in humans and western lowland gorillas; II-B and II-C were observed in humans, western lowland gorillas and chimpanzees; III-B and III-C were found only in humans. Pairwise nucleotide difference in the cox1 haplotypes between the groups was more than 8%, while the difference within each group was less than 2.1%. CONCLUSIONS/SIGNIFICANCE: The distinctness of ITS sequence variants and high number of pairwise nucleotide differences among cox1 variants indicate the possible presence of several species of Necator in both humans and great apes. We conclude that Necator hookworms are shared by humans and great apes co-habiting the same tropical forest ecosystems.
[Mh] MeSH terms primary: Ecosystem
Necator/classification
Necator/isolation & purification
Necatoriasis/parasitology
Necatoriasis/veterinary
Trees
[Mh] MeSH terms secundary: Animals
Central African Republic/epidemiology
Cluster Analysis
DNA, Ribosomal Spacer/chemistry
DNA, Ribosomal Spacer/genetics
Electron Transport Complex IV/genetics
Genotype
Humans
Molecular Epidemiology
Molecular Sequence Data
Necator/genetics
Necatoriasis/epidemiology
Pan troglodytes
Phylogeny
Primate Diseases/epidemiology
Primate Diseases/parasitology
Primates
Sequence Analysis, DNA
Sequence Homology
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (DNA, Ribosomal Spacer); EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Entry month:1410
[Cu] Class update date: 141111
[Lr] Last revision date:141111
[Js] Journal subset:IM
[Da] Date of entry for processing:140321
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pntd.0002715

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[PMID]: 24445211
[Au] Autor:Knopp S; Salim N; Schindler T; Karagiannis Voules DA; Rothen J; Lweno O; Mohammed AS; Singo R; Benninghoff M; Nsojo AA; Genton B; Daubenberger C
[Ad] Address:Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland; Department of Life Sciences, Natural History Museum, London, United Kingdom; Bagamoyo Research and Training Centre, Ifakara Health Institute, Bagamoyo, United Republic of Tanzania; Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland; Division for Tropical Medicine and Infectious Diseases, Ludwig-Maximilians University Hospital, Munich, Germany; National Institute for Medical Research, Mbeya Medical Research Center, Mbeya, Tanzania.
[Ti] Title:Diagnostic accuracy of Kato-Katz, FLOTAC, Baermann, and PCR methods for the detection of light-intensity hookworm and Strongyloides stercoralis infections in Tanzania.
[So] Source:Am J Trop Med Hyg;90(3):535-45, 2014 Mar.
[Is] ISSN:1476-1645
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Sensitive diagnostic tools are crucial for an accurate assessment of helminth infections in low-endemicity areas. We examined stool samples from Tanzanian individuals and compared the diagnostic accuracy of a real-time polymerase chain reaction (PCR) with the FLOTAC technique and the Kato-Katz method for hookworm and the Baermann method for Strongyloides stercoralis detection. Only FLOTAC had a higher sensitivity than the Kato-Katz method for hookworm diagnosis; the sensitivities of PCR and the Kato-Katz method were equal. PCR had a very low sensitivity for S. stercoralis detection. The cycle threshold values of the PCR were negatively correlated with the logarithm of hookworm egg and S. stercoralis larvae counts. The median larvae count was significantly lower in PCR false negatives than true positives. All methods failed to detect very low-intensity infections. New diagnostic approaches are needed for monitoring of progressing helminth control programs, confirmation of elimination, or surveillance of disease recrudescence.
[Mh] MeSH terms primary: Helminthiasis/diagnosis
Helminths/genetics
Intestinal Diseases, Parasitic/diagnosis
Real-Time Polymerase Chain Reaction/methods
[Mh] MeSH terms secundary: Adolescent
Adult
Aged
Aged, 80 and over
Ancylostoma/genetics
Ancylostoma/isolation & purification
Ancylostomiasis/diagnosis
Animals
Ascariasis/diagnosis
Ascaris lumbricoides/genetics
Ascaris lumbricoides/isolation & purification
Child
Child, Preschool
DNA, Helminth/analysis
Feces/parasitology
Female
Helminths/isolation & purification
Humans
Infant
Larva
Male
Middle Aged
Necator americanus/genetics
Necator americanus/isolation & purification
Necatoriasis/diagnosis
Parasite Egg Count
Schistosoma mansoni/genetics
Schistosoma mansoni/isolation & purification
Schistosomiasis mansoni/diagnosis
Sensitivity and Specificity
Strongyloides stercoralis/genetics
Strongyloides stercoralis/isolation & purification
Strongyloidiasis/diagnosis
Tanzania
Trichuriasis/diagnosis
Trichuris/genetics
Trichuris/isolation & purification
Young Adult
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (DNA, Helminth)
[Em] Entry month:1404
[Cu] Class update date: 141111
[Lr] Last revision date:141111
[Js] Journal subset:AIM; IM
[Da] Date of entry for processing:140306
[St] Status:MEDLINE
[do] DOI:10.4269/ajtmh.13-0268

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[PMID]: 24574217
[Au] Autor:Baloch HM; Armstrong DT; Pulling TM; Miller LM
[Ad] Address:Dwight D. Eisenhower Army Medical Center, Fort Gordon, GA.
[Ti] Title:Hookworm-associated reactive spondyloarthritis.
[So] Source:Arthritis Rheumatol;66(3):578, 2014 Mar.
[Is] ISSN:2326-5205
[Cp] Country of publication:United States
[La] Language:eng
[Mh] MeSH terms primary: Arthritis, Reactive/parasitology
Necatoriasis/complications
[Mh] MeSH terms secundary: Humans
Male
Young Adult
[Pt] Publication type:CASE REPORTS; JOURNAL ARTICLE
[Em] Entry month:1405
[Js] Journal subset:AIM; IM
[Da] Date of entry for processing:140227
[St] Status:MEDLINE
[do] DOI:10.1002/art.38289


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