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https://www.readbyqxmd.com/read/29775454/in-vivo-and-in-vitro-studies-of-cry5b-and-nicotinic-acetylcholine-receptor-agonist-anthelmintics-reveal-a-powerful-and-unique-combination-therapy-against-intestinal-nematode-parasites
#1
Yan Hu, Melanie Miller, Bo Zhang, Thanh-Thanh Nguyen, Martin K Nielsen, Raffi V Aroian
BACKGROUND: The soil-transmitted nematodes (STNs) or helminths (hookworms, whipworms, large roundworms) infect the intestines of ~1.5 billion of the poorest peoples and are leading causes of morbidity worldwide. Only one class of anthelmintic or anti-nematode drugs, the benzimidazoles, is currently used in mass drug administrations, which is a dangerous situation. New anti-nematode drugs are urgently needed. Bacillus thuringiensis crystal protein Cry5B is a powerful, promising new candidate...
May 18, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29774287/prevalence-of-gastrointestinal-helminth-infections-of-dog-in-enugu-state-south-eastern-nigeria
#2
I K Idika, E C Onuorah, C F Obi, P U Umeakuana, C O Nwosu, D N Onah, S N Chiejina
The prevalence of gastrointestinal helminth infections of dog in Enugu State, South Eastern Nigeria was studied retrospectively and prospectively. In the retrospective study, records of all diagnosed helminth infections of dogs brought to the University of Nigeria Veterinary Teaching Hospital, Nsukka from January, 2006 to September 2013 were collated and analyzed. The prospective study was carried out between October 2013 and July 2014 by examination of 263 faecal samples collected per rectum from dogs presented to a purposively selected Veterinary Clinics in Enugu metropolis and the Veterinary Teaching Hospital of the University of Nigeria, Nsukka...
August 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29772478/bacillus-thuringiensis-cry5b-protein-as-a-new-pan-hookworm-cure
#3
Yan Hu, Thanh-Thanh Nguyen, Alice C Y Lee, Joseph F Urban, Melanie M Miller, Bin Zhan, David J Koch, Jason B Noon, Ambily Abraham, Ricardo Toshio Fujiwara, Dwight D Bowman, Gary R Ostroff, Raffi V Aroian
Hookworms are intestinal nematode parasites that infect nearly half a billion people and are globally one of the most important contributors to iron-deficiency anemia. These parasites have significant impacts in developing children, pregnant women and working adults. Of all the soil-transmitted helminths or nematodes (STNs), hookworms are by far the most important, with disease burdens conservatively estimated at four million DALYs (Disability-Adjusted Life Years) and with productivity losses of up to US$139 billion annually...
May 4, 2018: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/29731476/prevalence-of-toxoplasma-gondii-and-other-intestinal-parasites-in-cats-in-tokachi-sub-prefecture-japan
#4
Doaa Salman, Wilawan Pumidonming, Eiji Oohashi, Makoto Igarashi
The present study investigated the prevalence of Toxoplasma gondii and other intestinal parasites in cats in the Tokachi subprefecture in Japan. A total of 365 household cats were included in the study, and 353 serum and 351 fecal samples were collected and analyzed. T. gondii IgG antibodies were detected in the sera of 16.14% of cats based on Latex agglutination test and ELISA. For ELISA, T. gondii RH strain tachyzoites lysate and T. gondii SAG2 recombinant protein were used as antigens. Low seropositivity was detected in cats younger than one year and older than 11 years; outdoor and hunter cats showed significantly high seropositivities...
May 2, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29668139/-zoonotic-intestinal-nematodes-in-dogs-from-public-parks-in-yucat%C3%A3-n-m%C3%A3-xico
#5
Rodrigo Adán Medina-Pinto, Roger Iván Rodríguez-Vivas, Manuel Emilio Bolio-González
INTRODUCTION: Dogs represent a potential public health risk because of the natural transmission of zoonotic parasitic infections. OBJECTIVE: To estimate the frequency and to determine factors associated with the presence of intestinal nematode eggs in dog feces collected in public parks of Mérida,Yucatán, México. MATERIALS AND METHODS: A total of 100 dog fecal samples collected from 20 public parks in two areas of Mérida were analyzed...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29660556/comparative-analysis-of-ancylostoma-ceylanicum-mitochondrial-genome-with-other-ancylostoma-species
#6
Xianli Shi, Mingwei Wang, A Y Abdullahi, Yeqi Fu, Fang Yang, Xingang Yu, Weida Pan, Xinxin Yan, Jianxiong Hang, Pan Zhang, Guoqing Li
Ancylostoma ceylanicum may inhabit the small intestine of canids, felids and humans, can pose a potential risk to public health. This study is the first time to amplify complete mitochondrial genome sequence of A. ceylanicum from dog and to compare it with Ancylostoma tubaeforme, Ancylostoma duodenale and Ancylostoma caninum. The results showed that the complete mitochondrial genome of A. ceylanicum was 13,660 bp in length, including 12 protein-coding genes, 2 rRNA genes and 22 tRNA genes and 3 non-coding regions (AT-rich region, SNCR and LNCR)...
April 13, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29627858/first-detection-of-echinococcus-granulosus-sensu-stricto-g1-in-dogs-in-central-sudan
#7
Rihab Ali Omer, Arwid Daugschies, Sandra Gawlowska, Ayman Elnahas, Peter Kern, Sofia Bashir, Mohammed Sir Alkhatim Ali, Amin Osman, Thomas Romig
Eighty-four stray dogs shot as a part of a governmental rabies control program in two neighboring towns of central Sudan were examined for the presence of Echinococcus spp. and other intestinal helminths. Echinococcus worms were identified to species level by PCR and gene sequencing. For comparative reasons, rectal content of the necropsied dogs was examined for helminth eggs and subjected to copro-PCR for Echinococcus. At necropsy, 51.2% (43/84) of the dogs harbored Echinococcus canadensis (G6/7) worms with worm burdens ranging from 22,000 to 80,000...
April 7, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29606160/molecular-identification-of-zoonotic-hookworm-species-in-dog-faeces-from-tanzania
#8
A Merino-Tejedor, P Nejsum, E M Mkupasi, M V Johansen, Annette Olsen
The presence and distribution of various species of canine hookworms in Africa are poorly known. The main objective of this study, therefore, was to identify the hookworm species present in canine faecal samples from Morogoro, Tanzania, using molecular techniques. Faecal samples from 160 local dogs were collected and hookworm positive samples processed to recover larvae for further molecular characterization. DNA was extracted from pools of larvae from individual samples (n = 66), which were analysed subsequently using two different molecular approaches, polymerase chain reaction-linked restriction fragment length polymorphism (PCR-RFLP) and species-specific PCR coupled with Sanger sequencing...
April 2, 2018: Journal of Helminthology
https://www.readbyqxmd.com/read/29563849/-ancylostoma-ceylanicum-novel-etiological-agent-for-traveler-s-diarrhea-report-of-four-japanese-patients-who-returned-from-southeast-asia-and-papua-new-guinea
#9
Masahide Yoshikawa, Yukiteru Ouji, Nobuyasu Hirai, Fukumi Nakamura-Uchiyama, Minoru Yamada, Naoki Arizono, Naoaki Akamatsu, Takaharu Yoh, Daisuke Kaya, Toshiya Nakatani, Eiryo Kikuchi, Yuichi Katanami, Kimitoshi Satoh, Ryosuke Maki, Yusuke Miyazato, Yuichiro Oba, Kei Kasahara, Keiichi Mikasa
Background: Countries in the Southeast Asia region have a high prevalence of soil-transmitted helminth, such as roundworm, whipworm, and hookworms [ Ancylostoma duodenale , Necator americanus , Ancylostoma ceylanicum ]. Recent molecular-based surveys have revealed that A . ceylanicum , a zoonotic hookworm, is likely the second most prevalent hookworm species infecting humans in that part of the world, while others have noted that this infection is an emerging public health risk not only for indigenous people but also for visitors from other countries...
2018: Tropical Medicine and Health
https://www.readbyqxmd.com/read/29505764/heligmosomoides-polygyrus-venom-allergen-like-protein-4-hpval-4-is-a-sterol-binding-protein
#10
Oluwatoyin A Asojo, Rabih Darwiche, Selam Gebremedhin, Geert Smant, Jose L Lozano-Torres, Claire Drurey, Jeroen Pollet, Rick M Maizels, Roger Schneiter, Ruud H P Wilbers
Heligmosomoides polygyrus bakeri is a model parasitic hookworm used to study animal and human helminth diseases. During infection, the parasite releases excretory/secretory products that modulate the immune system of the host. The most abundant protein family in excretory/secretory products comprises the venom allergen-like proteins (VALs), which are members of the SCP/TAPS (sperm-coating protein/Tpx/antigen 5/pathogenesis related-1/Sc7) superfamily. There are >30 secreted Heligmosomoides polygyrus VAL proteins (HpVALs) and these proteins are characterised by having either one or two 15 kDa CAP (cysteine-rich secretory protein (CRISP)/antigen 5/pathogenesis related-1) domains...
April 2018: International Journal for Parasitology
https://www.readbyqxmd.com/read/29495964/improving-eukaryotic-genome-annotation-using-single-molecule-mrna-sequencing
#11
Vincent Magrini, Xin Gao, Bruce A Rosa, Sean McGrath, Xu Zhang, Kymberlie Hallsworth-Pepin, John Martin, John Hawdon, Richard K Wilson, Makedonka Mitreva
BACKGROUND: The advantages of Pacific Biosciences (PacBio) single-molecule real-time (SMRT) technology include long reads, low systematic bias, and high consensus read accuracy. Here we use these attributes to improve on the genome annotation of the parasitic hookworm Ancylostoma ceylanicum using PacBio RNA-Seq. RESULTS: We sequenced 192,888 circular consensus sequences (CCS) derived from cDNAs generated using the CloneTech SMARTer system. These SMARTer-SMRT libraries were normalized and size-selected providing a robust population of expressed structural genes for subsequent genome annotation...
March 1, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29488595/-chronic-and-severe-anemia-caused-by-ancylostoma-duodenale-in-ecuador-diagnosis-by-duodenoscopy
#12
Manuel Calvopiña, Jessica Flores, Isabel Guaman, Gabriela Lara, Jeyson Abarca
For 11 years, a 38-year-old male residing in a subtropical region of Ecuador, was repeatedly diagnosed with chronic anemia, and treated with blood transfusions in a hospital of province of Cotopaxi, Ecuador. He was transferred to Quito for severe anemia, having hemoglobin of 4 g/dL. Duodenoscopy was performed and adult nematodes, identified later as Ancylostoma duodenale, were observed. The patient was successfully treated with albendazole for five consecutive days and given blood transfusions. In the control visit at eight months, without anemia and no hookworm ova in the stool examined were found...
October 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29466502/endoparasites-in-domestic-animals-surrounding-an-atlantic-forest-remnant-in-s%C3%A3-o-paulo-state-brazil
#13
Anaiá da Paixão Sevá, Hilda Fátima de Jesus Pena, Alessandra Nava, Amanda Oliveira de Sousa, Luciane Holsback, Rodrigo Martins Soares
Morro do Diabo State Park (MDSP) is a significant remnant of the Atlantic Rain Forest in Brazil and is surrounded by rural properties. In that area, wild and domestic animals and humans are in close contact, which facilitates the two-way flow of infectious diseases among them. We assessed endoparasites in domestic livestock from all rural properties surrounding MDSP. There were sampled 197 cattle, 37 horses, 11 sheep, 25 swine, 21 dogs, one cat and 62 groups of chickens from 10 large private properties and 75 rural settlements...
February 19, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29458421/epidemiology-of-canine-gastrointestinal-helminths-in-sub-saharan-africa
#14
Nozyechi Ngulube Chidumayo
BACKGROUND: Dogs have a close association with humans providing companionship, security and a source of dietary protein. However, dogs are also potential carriers of zoonotic pathogens. Dogs, therefore, pose a public health risk and a good understanding of canine diseases is important for planning and implementing control measures. The aim of this study was to characterise canine helminthiasis in sub-Saharan Africa using a systematic approach. METHODS: Pubmed and Google Scholar were searched for relevant primary studies published from 2000...
February 20, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29410653/the-risk-of-chronic-gastrointestinal-disorders-following-acute-infection-with-intestinal-parasites
#15
Jason Blitz, Mark S Riddle, Chad K Porter
Background: Infectious gastroenteritis (IGE) is caused by numerous bacterial, viral, and parasitic pathogens. A history of IGE has been shown in previous studies to increase the risk of developing chronic gastrointestinal disorders and other chronic conditions. As bacteria and viruses represent the majority of pathogen-specific causes of IGE, post-infectious studies have primarily focused on these organisms. The objective of this study was to investigate an association between a history of parasite-associated IGE and the subsequent development of chronic post-infectious gastrointestinal and non-gastrointestinal disorders in a military population...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29400266/molecular-differentiation-of-three-canine-and-feline-hookworms-in-south-china-through-hrm-analysis
#16
M W Wang, X X Yan, J X Hang, X L Shi, Y Q Fu, P Zhang, F Yang, W D Pan, G Q Li
To investigate the prevalence of canine and feline hookworms in South China, and to assess the risk of zoonotic hookworms to humans, one pair of primers (HRM-F/HRM-R) was designed to establish a high-resolution melting (HRM) method based on internal transcribed spacer 1 (ITS-1) rDNA for the detection of Ancylostoma ceylanicum, A. caninum and A. tubaeforme infection. The results showed that the HRM for the three hookworms produced different melting-curve profiles, where melting temperature (T m) values were 84...
February 5, 2018: Journal of Helminthology
https://www.readbyqxmd.com/read/29370855/of-dogs-and-hookworms-man-s-best-friend-and-his-parasites-as-a-model-for-translational-biomedical-research
#17
REVIEW
Catherine Shepherd, Phurpa Wangchuk, Alex Loukas
We present evidence that the dog hookworm (Ancylostoma caninum) is underutilised in the study of host-parasite interactions, particularly as a proxy for the human-hookworm relationship. The inability to passage hookworms through all life stages in vitro means that adult stage hookworms have to be harvested from the gut of their definitive hosts for ex vivo research. This makes study of the human-hookworm interface difficult for technical and ethical reasons. The historical association of humans, dogs and hookworms presents a unique triad of positive evolutionary pressure to drive the A...
January 25, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29370166/expanding-molecular-diagnostics-of-helminthiasis-piloting-use-of-the-gpln-platform-for-surveillance-of-soil-transmitted-helminthiasis-and-schistosomiasis-in-ghana
#18
Lucas J Cunningham, John Odoom, Deborah Pratt, Linda Boatemaa, Nana Asante-Ntim, Keren Attiku, Bismarck Banahene, Mike Osei-Atweneboana, Jaco J Verweij, David Molyneux, Russell J Stothard, Emily R Adams
The efforts to control and eradicate polio as a global health burden have been successful to the point where currently only three countries now report endemic polio, and the number of cases of polio continues to decrease. The success of the polio programme has been dependant on a well-developed network of laboratories termed the global polio laboratory network (GPLN). Here we explore collaborative opportunities with the GPLN to target two of the 18 diseases listed as a neglected tropical diseases (NTD) namely soil transmitted helminthiasis (STH) and Schistosomiasis (SCH)...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29343694/sertraline-paroxetine-and-chlorpromazine-are-rapidly-acting-anthelmintic-drugs-capable-of-clinical-repurposing
#19
Janis C Weeks, William M Roberts, Caitlyn Leasure, Brian M Suzuki, Kristin J Robinson, Heather Currey, Phurpa Wangchuk, Ramon M Eichenberger, Aleen D Saxton, Thomas D Bird, Brian C Kraemer, Alex Loukas, John M Hawdon, Conor R Caffrey, Nicole F Liachko
Parasitic helminths infect over 1 billion people worldwide, while current treatments rely on a limited arsenal of drugs. To expedite drug discovery, we screened a small-molecule library of compounds with histories of use in human clinical trials for anthelmintic activity against the soil nematode Caenorhabditis elegans. From this screen, we found that the neuromodulatory drugs sertraline, paroxetine, and chlorpromazine kill C. elegans at multiple life stages including embryos, developing larvae and gravid adults...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29336229/parasites-of-importance-for-human-health-on-edible-fruits-and-vegetables-in-nigeria-a-systematic-review-and-meta-analysis-of-published-data
#20
Solomon Ngutor Karshima
Contamination of edible fruits and vegetables is now a global public health issue despite their health benefits as non-pharmacological prophylaxis against chronic diseases. Studies that will harness the extent of parasitic contaminations will ensure public health protection. Here, the prevalence and distribution of parasites of importance for human health on fruits and vegetables in Nigeria were determined through a systematic review and meta-analysis of published data. The random-effects model was used to determine pooled prevalence estimate (PPE)...
January 16, 2018: Pathogens and Global Health
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