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https://www.readbyqxmd.com/read/28346536/water-sanitation-and-hygiene-wash-and-environmental-risk-factors-for-soil-transmitted-helminth-intensity-of-infection-in-timor-leste-using-real-time-pcr
#1
Suzy J Campbell, Susana V Nery, Rebecca Wardell, Catherine A D'Este, Darren J Gray, James S McCarthy, Rebecca J Traub, Ross M Andrews, Stacey Llewellyn, Andrew J Vallely, Gail M Williams, Archie C A Clements
BACKGROUND: No investigations have been undertaken of risk factors for intensity of soil-transmitted helminth (STH) infection in Timor-Leste. This study provides the first analysis of risk factors for intensity of STH infection, as determined by quantitative PCR (qPCR), examining a broad range of water, sanitation and hygiene (WASH) and environmental factors, among communities in Manufahi District, Timor-Leste. METHODS: A baseline cross-sectional survey of 18 communities was undertaken as part of a cluster randomised controlled trial, with additional identically-collected data from six other communities...
March 27, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28336269/epidemiology-of-polyparasitism-with-taenia-solium-schistosomes-and-soil-transmitted-helminths-in-the-co-endemic-village-of-malanga-democratic-republic-of-congo
#2
Joule Madinga, Katja Polman, Kirezi Kanobana, Lisette van Lieshout, Eric Brienen, Nicolas Praet, Constantin Kabwe, Sarah Gabriël, Pierre Dorny, Pascal Lutumba, Niko Speybroeck
Helminth co-infections are common in sub-Saharan Africa. However, little is known about the distribution and determinants of co-infections with Taenia solium taeniasis/cysticercosis. Building on a previous community-based study on human cysticercosis in Malanga village, we investigated co-infections with Taenia solium, soil-transmitted helminths (STHs) and Schistosoma spp and associated risk factors in a random subsample of 330 participants. Real time PCR assays were used to detect DNA of soil-transmitted helminths (STHs), T...
March 20, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28319674/assessment-of-circulating-betatrophin-concentrations-in-lean-glucose-tolerant-women-with-polycystic-ovary-syndrome
#3
Onur Erol, Mustafa Kemal Özel, Hamit Yaşar Ellidağ, Tayfun Toptaş, Aysel Uysal Derbent, Necat Yılmaz
The aims of the current study were to investigate the betatrophin levels in lean glucose-tolerant women with polycystic ovary syndrome (PCOS), and to explore the relationships between these levels and antropometric, hormonal and metabolic parameters. The study population consisted of 50 lean (body mass index [BMI] < 25 kg/m(2)) women diagnosed with PCOS using the Rotterdam criteria, and 60 age- and BMI-matched healthy controls without any features of clinical or biochemical hyperandrogenism. Before recruitment, glucose tolerance was evaluated in all of the subjects using the 2-h 75 g oral glucose-tolerance test, and only those exhibiting normal glucose tolerance were enrolled...
March 20, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28318177/can-soluble-transferrin-receptor-be-used-in-diagnosing-iron-deficiency-anemia-and-assessing-iron-response-in-infants-with-moderate-acute-malnutrition
#4
Bahar Bu Yu Kkaragöz, Necat A Akgun, Ayse D Bulus, Sultan Durmus Aydogdu, Cengiz Bal
OBJECTIVE: To evaluate the efficacy of soluble transferrin receptor (sTfR) in diagnosing iron deficiency anemia (IDA) and evaluating iron response in infants with moderate acute malnutrition (MAM). POPULATION AND METHODS: Infants with hemoglobin (Hb) levels lower than threshold values for anemia for their ages and hypochromic/ microcytic anemia on peripheral smear were recruited. MAM was defined as weight/height z score < -2 to -3. Complete blood count (CBC), iron parameters and sTfR were compared among 41 infants with MAM and anemia (MA group), 32 infants with anemia without MAM (group A), and healthy controls (n= 30)...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28290266/improved-diagnosis-of-trichuris-trichiura-by-using-a-bead-beating-procedure-on-ethanol-preserved-stool-samples-prior-to-dna-isolation-and-the-performance-of-multiplex-real-time-pcr-for-intestinal-parasites
#5
Maria M M Kaisar, Eric A T Brienen, Yenny Djuardi, Erliyani Sartono, Maria Yazdanbakhsh, Jaco J Verweij, Taniawati Supali, Lisette VAN Lieshout
For the majority of intestinal parasites, real-time PCR-based diagnosis outperforms microscopy. However, the data for Trichuris trichiura have been less convincing and most comparative studies have been performed in populations with low prevalence. This study aims to improve detection of T. trichuria DNA in human stool by evaluating four sample preparation methods. Faecal samples (n = 60) were collected at Flores island, Indonesia and examined by microscopy. Aliquots were taken and a bead-beating procedure was used both on directly frozen stool and on material preserved with 96% ethanol...
March 14, 2017: Parasitology
https://www.readbyqxmd.com/read/28289269/epidemiological-investigation-of-parasitic-infection-of-schoolchildren-from-six-elementary-schools-in-sakon-nakhon-province-thailand
#6
Ryuichi Doi, Makoto Itoh, Somchai Chakhatrakan, Shoji Uga
We conducted an epidemiological study of intestinal parasitic infection in 572 schoolchildren aged 4 to 12 years old from six elementary schools in Sakon Nakhon Province, Thailand from June 2013 to August 2014. We collected fecal, blood, and urine samples to investigate parasitic infection and conducted a questionnaire survey. Soil samples were examined for egg contamination. Fecal examination, using the formalin-ether sedimentation method, revealed that 39% of schoolchildren were infected with eight genera and eight species of parasites; three nematodes, two trematodes, one cestode, and two protozoa...
February 15, 2017: Kobe Journal of Medical Sciences
https://www.readbyqxmd.com/read/28222192/blastocystis-subtyping-and-its-association-with-intestinal-parasites-in-children-from-different-geographical-regions-of-colombia
#7
Juan David Ramírez, Carolina Flórez, Mario Olivera, María Consuelo Bernal, Julio Cesar Giraldo
Blastocystis is a common enteric protist colonizing probably more than 1 billion people with a large variety of non-human hosts. Remarkable genetic diversity has been observed, leading to the subdivision of the genus into multiple subtypes (ST), some of which are exclusively found in non-human hosts. The aim of this study was to determine the distribution of Blastocystis STs/18S alleles in symptomatic (abdominal pain, anal pruritus, diarrhea, headache, nauseas and/or vomit) and asymptomatic children from nine geographical regions of Colombia...
2017: PloS One
https://www.readbyqxmd.com/read/28214519/detection-and-quantification-of-soil-transmitted-helminths-in-environmental-samples-a-review-of-current-state-of-the-art-and-future-perspectives
#8
REVIEW
Isaac Dennis Amoah, Gulshan Singh, Thor Axel Stenström, Poovendhree Reddy
It is estimated that over a billion people are infected with soil-transmitted helminths (STHs) globally with majority occurring in tropical and subtropical regions of the world. The roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura), and hookworms (Ancylostoma duodenale and Necator americanus) are the main species infecting people. These infections are mostly gained through exposure to faecally contaminated water, soil or contaminated food and with an increase in the risk of infections due to wastewater and sludge reuse in agriculture...
May 2017: Acta Tropica
https://www.readbyqxmd.com/read/28212668/association-of-community-sanitation-usage-with-soil-transmitted-helminth-infections-among-school-aged-children-in-amhara-region-ethiopia
#9
William E Oswald, Aisha E P Stewart, Michael R Kramer, Tekola Endeshaw, Mulat Zerihun, Berhanu Melak, Eshetu Sata, Demelash Gessese, Tesfaye Teferi, Zerihun Tadesse, Birhan Guadie, Jonathan D King, Paul M Emerson, Elizabeth K Callahan, Matthew C Freeman, W Dana Flanders, Thomas F Clasen, Christine L Moe
BACKGROUND: Globally, in 2010, approximately 1.5 billion people were infected with at least one species of soil-transmitted helminth (STH), Ascaris lumbricoides, Trichuris trichiura, hookworm (Ancylostoma duodenale and Necator americanus). Infection occurs through ingestion or contact (hookworm) with eggs or larvae in the environment from fecal contamination. To control these infections, the World Health Organization recommends periodic mass treatment of at-risk populations with deworming drugs...
February 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28192438/advances-in-neglected-tropical-disease-vaccines-developing-relative-potency-and-functional-assays-for-the-na-gst-1-alhydrogel-hookworm-vaccine
#10
Jill B Brelsford, Jordan L Plieskatt, Anna Yakovleva, Amar Jariwala, Brian P Keegan, Jin Peng, Pengjun Xia, Guangzhao Li, Doreen Campbell, Maria Victoria Periago, Rodrigo Correa-Oliveira, Maria Elena Bottazzi, Peter J Hotez, David Diemert, Jeffrey M Bethony
A new generation of vaccines for the neglected tropical diseases (NTDs) have now advanced into clinical development, with the Na-GST-1/Alhydrogel Hookworm Vaccine already being tested in Phase 1 studies in healthy adults. The current manuscript focuses on the often overlooked critical aspects of NTD vaccine product development, more specifically, vaccine stability testing programs. A key measure of vaccine stability testing is "relative potency" or the immunogenicity of the vaccine during storage. As with most NTD vaccines, the Na-GST-1/Alhydrogel Hookworm Vaccine was not developed by attenuation or inactivation of the pathogen (Necator americanus), so conventional methods for measuring relative potency are not relevant for this investigational product...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28180198/color-doppler-ultrasound-characteristics-after-subinguinal-microscopic-varicocelectomy
#11
Murat Akand, Mustafa Koplay, Necat Islamoglu, Emre Altintas, Ozcan Kilic, Murat Gul, Haluk Kulaksizoglu, Mesut Sivri, Serdar Goktas
AIM: The present study evaluated the effect of differences in the peak systolic velocity (PSV) and resistive index (RI) in the testicular artery (TA), capsular artery (CA), and intratesticular artery (ITA) after microscopic subinguinal varicocelectomy (MSV) on postoperative pain and semen parameters. PATIENTS AND METHODS: Scrotal color Doppler ultrasound (CDUS) measurements were made in 33 patients (age 18-31 years) prior to MSV and 3 and 6 months after MSV. Pain was recorded using a visual analog scale and sperm concentration was determined to analyze the predictive value of the CDUS parameters regarding surgical outcome...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28156050/evaluation-of-a-decision-support-strategy-for-the-control-of-powdery-mildew-erysiphe-necator-schw-burr-in-grapevine-in-the-central-region-of-chile
#12
Héctor Valdés-Gómez, Miguel Araya-Alman, Carolina Pañitrur-De la Fuente, Nicolás Verdugo-Vásquez, Mauricio Lolas, César Acevedo-Opazo, Christian Gary, Agnès Calonnec
BACKGROUND: The primary strategy to control powdery mildew in Chilean vineyards involves periodic fungicide spraying, which may lead to many environmental and human health risks. This study aimed to implement and evaluate the effectiveness and economic feasibility of a novel Decision Support Strategy (DSS) to limit the number of treatments against this pathogen. An experiment was conducted between the 2010 and 2013 seasons in two irrigated vine fields, one containing a cultivar of Cabernet Sauvignon (CS) and another of Chardonnay (CH)...
February 3, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28131063/constitutive-heterologous-overexpression-of-a-tir-nb-arc-lrr-gene-encoding-a-putative-disease-resistance-protein-from-wild-chinese-vitis-pseudoreticulata-in-arabidopsis-and-tobacco-enhances-resistance-to-phytopathogenic-fungi-and-bacteria
#13
Zhifeng Wen, Liping Yao, Stacy D Singer, Hanif Muhammad, Zhi Li, Xiping Wang
Plants use resistance (R) proteins to detect pathogen effector proteins and activate their innate immune response against the pathogen. The majority of these proteins contain an NB-ARC (nucleotide-binding adaptor shared by APAF-1, R proteins, and CED-4) domain along with a leucine-rich repeat (LRR), and some also bear a toll interleukin 1 receptor (TIR) domain. In this study, we characterized a gene encoding a TIR-NB-ARC-LRR R protein (VpTNL1) (GenBank accession number KX649890) from wild Chinese grapevine Vitis pseudoreticulata accession "Baihe-35-1", which was identified previously from a transcriptomic analysis of leaves inoculated with powdery mildew (PM; Erysiphe necator (Schw...
January 17, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28114314/diagnosing-polyparasitism-in-a-high-prevalence-setting-in-beira-mozambique-detection-of-intestinal-parasites-in-fecal-samples-by-microscopy-and-real-time-pcr
#14
Lynn Meurs, Anton M Polderman, Natalie V S Vinkeles Melchers, Eric A T Brienen, Jaco J Verweij, Bernhard Groosjohan, Felisberto Mendes, Manito Mechendura, Dagmar H Hepp, Marijke C C Langenberg, Rosanne Edelenbosch, Katja Polman, Lisette van Lieshout
BACKGROUND: Many different intestinal parasite species can co-occur in the same population. However, classic diagnostic tools can only frame a particular group of intestinal parasite species. Hence, one or two tests do not suffice to provide a complete picture of infecting parasite species in a given population. The present study investigated intestinal parasitic infections in Beira, Mozambique, i.e. in the informal settlement of Inhamudima. Diagnostic accuracy of five classical microscopy techniques and real-time PCR for the detection of a broad spectrum of parasites was compared...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28100811/the-molecular-speciation-of-soil-transmitted-helminth-eggs-collected-from-school-children-across-six-endemic-countries
#15
Santosh George, Peter Geldhof, Marco Albonico, Shaali M Ame, Jeffrey M Bethony, Dirk Engels, Zeleke Mekonnen, Antonio Montresor, Sopheak Hem, Louis-Albert Tchuem-Tchuenté, Nguyen Thu Huong, Gagandeep Kang, Jozef Vercruysse, Bruno Levecke
BACKGROUND: The diagnosis of soil-transmitted helminths (STHs; Ascaris, Trichuris and hookworms) is traditionally based on the demonstration of eggs in stool using microscopic techniques. While molecular techniques are more appropriate to speciate STH species they are seldom applied. In this study we speciated STH eggs from stool using molecular techniques to gain insights into the distribution of both human and animal STH species in the human host. METHODS: We speciated 207 STH egg isolates from stool collected during the baseline survey of six drug efficacy trials conducted in Brazil, Cambodia, Cameroon, Ethiopia, Tanzania and Vietnam applying a PCR - restriction fragment length polymorphisms based approach...
January 18, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28098526/ancylostoma-ceylanicum-hookworm-in-the-solomon-islands
#16
Richard S Bradbury, Sze Fui Hii, Humpress Harrington, Richard Speare, Rebecca Traub
Although hookworm is highly prevalent in the Solomon Islands, the species involved are unknown. We initiated this study in response to finding Ancylostoma ceylanicum hookworm in a peacekeeper in Australia who had returned from the Solomon Islands. Kato-Katz fecal surveys performed in 2013 and 2014 in 2 village groups in East Malaita, Solomon Islands, identified hookworm-positive samples. These specimens were tested by cytochrome oxidase 1 (cox-1) gene multiplex PCR and sequenced. Of 66 positive specimens, 54 (81...
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28077747/first-molecular-identifications-of-necator-americanus-and-ancylostoma-ceylanicum-infecting-rural-communities-in-lower-myanmar
#17
Win Pa Pa Aung, Thi Thi Htoon, Htay Htay Tin, Oranuch Sanpool, Jurairat Jongthawin, Lakkhana Sadaow, Issarapong Phosuk, Rutchanee Ropai, Pewpan M Intapan, Wanchai Maleewong
Hookworms are enteric parasitic roundworms infecting an estimated 400 million persons worldwide. Herein, we provide the first molecular identifications of human hookworms from certain parts of rural Lower Myanmar. DNA was extracted from hookworm-positive stool samples, as determined by microscopy. DNA sequences of the partial internal transcribed spacer 1, full length 5.8S gene, and partial internal transcribed spacer 2 were determined and compared with available hookworm sequences from public databases. Of the 11 polymerase chain reaction-positive samples, eight (Bago Region, N = 4; Mon State, N = 4) yielded sequences with high similarity to those of Necator americanus A further three sequences (Mon State, N = 2; Bago Region, N = 1) showed high similarity with those of Ancylostoma ceylanicum The latter is primarily a parasite of dogs and represents a zoonosis...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28050847/production-of-r-3-hydroxybutyric-acid-by-arxula-adeninivorans
#18
Mateusz Biernacki, Jan Riechen, Urs Hähnel, Thomas Roick, Kim Baronian, Rüdiger Bode, Gotthard Kunze
(R)-3-hydroxybutyric acid can be used in industrial and health applications. The synthesis pathway comprises two enzymes, β-ketothiolase and acetoacetyl-CoA reductase which convert cytoplasmic acetyl-CoA to (R)-3-hydroxybutyric acid [(R)-3-HB] which is released into the culture medium. In the present study we used the non-conventional yeast, Arxula adeninivorans, for the synthesis enantiopure (R)-3-HB. To establish optimal production, we investigated three different endogenous yeast thiolases (Akat1p, Akat2p, Akat4p) and three bacterial thiolases (atoBp, thlp, phaAp) in combination with an enantiospecific reductase (phaBp) from Cupriavidus necator H16 and endogenous yeast reductases (Atpk2p, Afox2p)...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28008860/basal-serum-neurokinin-b-level-can-be-used-to-differentiate-idiopathic-central-precocious-puberty-from-premature-thelarche-in-girls
#19
Mesut Parlak, Doğa Türkkahraman, Hamit Yaşar Ellidağ, Gamze Çelmeli, Ayşe Eda Parlak, Necat Yılmaz
OBJECTIVE: The aim of the study is to investigate the diagnostic role of kisspeptin and neurokinin B in idiopathic central precocious puberty (ICPP) and premature thelarche (PT). METHODS: The girls who presented with early breast development before the age of 8 years were evaluated. Basal and stimulated FSH, LH levels and basal neurokinin B and kisspeptin levels were measured. Patients who had peak LH > 5mIU/mL, and a bone age (BA) /chronological age (CA) ratio >1...
December 23, 2016: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28007484/diagnosis-of-intestinal-parasites-in-a-rural-community-of-venezuela-advantages-and-disadvantages-of-using-microscopy-or-rt-pcr
#20
COMPARATIVE STUDY
Renzo Nino Incani, Elizabeth Ferrer, Denise Hoek, Robbert Ramak, Jeroen Roelfsema, Lapo Mughini-Gras, Titia Kortbeek, Elena Pinelli
A cross-sectional study was carried out to determine the prevalence and diagnostic performance of microscopy and real time PCR (RT-PCR) for 14 intestinal parasites in a Venezuelan rural community with a long history of persistent intestinal parasitic infections despite the implementation of regular anthelminthic treatments. A total of 228 participants were included in this study. A multiplex RT-PCR was used for the detection of Dientamoeba fragilis, Giardia intestinalis, Cryptosporidium sp. and a monoplex RT-PCR for Entamoeba histolytica...
March 2017: Acta Tropica
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