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https://www.readbyqxmd.com/read/27907208/interaction-between-salmonella-and-schistosomiasis-a-review
#1
REVIEW
Amber Hsiao, Trevor Toy, Hye Jin Seo, Florian Marks
The interaction between schistosomiasis and Salmonella is a particularly important issue in Africa, where dual infection by the parasite and the bacterium are likely common. In this review, the ways in which schistosomiasis affects human biology as it relates to Salmonella are described. Those who are infected by both organisms experience reduced immunological functioning, exhibit irreversible organ damage due to prolonged schistosomiasis infection, and become latent carriers of Salmonella enterica serotypes Typhi and Paratyphi and S...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27891322/epigenetics-in-schistosomes-what-we-know-and-what-we-need-know
#2
REVIEW
Weiwei Liu
Schistosomes are metazoan parasites and can cause schistosomiasis. Epigenetic modifications include DNA methylation, histone modifications and non-coding RNAs. Some enzymes involved in epigenetic modification and microRNA processes have been developed as drugs to treat the disease. Compared with humans and vertebrates, an in-depth understanding of epigenetic modifications in schistosomes is starting to be realized. DNA methylation, histone modifications and non-coding RNAs play important roles in the development and reproduction of schistosomes and in interactions between the host and schistosomes...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27888125/initiating-ntd-programs-targeting-schistosomiasis-and-soil-transmitted-helminthiasis-in-two-provinces-of-the-democratic-republic-of-the-congo-establishment-of-baseline-prevalence-for-mass-drug-administration
#3
Achille Kabore, Moudachirou Ibikounle, Jean Jacques Tougoue, Sylvain Mupoyi, Martin Ndombe, Scott Shannon, Eric A Ottesen, Faustin Mukunda, Naomi Awaca
BACKGROUND: Schistosomiasis (SCH) and soil-transmitted helminthiasis (STH) are widely distributed in the Democratic Republic of the Congo (DRC) and constitute a serious public health problem. As recommended by the World Health Organization (WHO), before launching mass chemotherapy to control these diseases, parasitological surveys were conducted in sentinel sites in six health zones (HZs) in Bandundu and Maniema provinces. Baseline prevalence and intensity of infection for SCH and STH were determined to establish the appropriate treatment plan using Praziquantel (PZQ) and Albendazole (ALB)...
November 22, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27884378/purinergic-signaling-in-schistosomal-infection
#4
REVIEW
Claudia Lucia Martins Silva
Human schistosomiasis is a chronic inflammatory disease caused by blood fluke worms belonging to the genus Schistosoma. Health metrics indicate that the disease is related to an elevated number of years lost-to-disability and years lost-to-life. Schistosomiasis is an intravascular disease that is related to a Th1 and Th2 immune response polarization, and the degree of polarization affects the outcome of the disease. The purinergic system is composed of adenosine and nucleotides acting as key messenger molecules...
October 2016: Biomedical Journal
https://www.readbyqxmd.com/read/27884376/purinergic-signaling-in-infection-and-autoimmune-disease
#5
EDITORIAL
Luiz Eduardo Baggio Savio, Robson Coutinho-Silva
Purinergic signaling plays a key role in inflammatory processes and modulates immune responses against a variety of bacterial and eukaryotic parasites. Here we highlight the role of purinergic receptor activation in infection and autoimmune diseases. Purinergic signaling and inflammasomes modulate the host immune response against chlamydial infections. In addition, increasing evidence suggests that purinergic signaling contributes to Schistosomiasis morbidity, a neglected tropical disease caused by parasitic worms called schistosomes...
October 2016: Biomedical Journal
https://www.readbyqxmd.com/read/27876076/bladder-outlet-obstruction-a-rare-complication-of-the-neglected-schistosome-schistosoma-haematobium-two-case-reports-and-public-health-challenges
#6
Valirie Ndip Agbor, Tsi Njim, Franklin Ngu Mbolingong
BACKGROUND: Schistosomiasis is a severe parasitic infestation with debilitating complications and is the third most devastating tropical disease in the world. It is one of the neglected tropical diseases (NTDs) with a high disease-burden. We present two rare cases of bladder outlet obstruction: one which led to a chronic kidney disease and ultimately death and a second which recovered after treatment with praziquantel. CASE PRESENTATIONS: A 72 year old male presented with lower urinary tract symptoms which culminated in an episode of acute urinary retention...
November 22, 2016: BMC Research Notes
https://www.readbyqxmd.com/read/27872685/mortality-and-rebleeding-following-variceal-haemorrhage-in-liver-cirrhosis-and-periportal-fibrosis
#7
Sara Elfadil Abbas Mohammed, Abdelmunem Eltayeb Abdo, Hatim Mohamed Yousif Mudawi
AIM: To investigate mortality and rebleeding rate and identify associated risk factors at 6 wk and 5 d following acute variceal haemorrhage in patients with liver cirrhosis and schistosomal periportal fibrosis. METHODS: This is a prospective study conducted during the period from March to December 2014. Patients with portal hypertension presenting with acute variceal haemorrhage secondary to either liver cirrhosis (group A) or schistosomal periportal fibroses (group B) presenting within 24 h of the onset of the bleeding were enrolled in the study and followed for a period of 6 wk...
November 8, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27872076/anti-schistosomiasis-liver-fibrosis-effects-of-chlorogenic-acid-through-il-13-mir-21-smad7-signaling-interactions-in-vivo-and-in-vitro
#8
Yao Wang, Fan Yang, Jun Xue, Xuan Zhou, Lei Luo, Qian Ma, Yun-Fei Chen, Juan Zhang, Shu-Ling Zhang, Lei Zhao
This study is to investigate the anti-Schistosomiasis liver fibrosis effects of chlorogenic acid (CGA) on IL-13/miR-21/Smad7 signaling interactions in hepatic stellate LX2 cell line and Schistosome-infected mice. The transfection was based on the GV273-miR-21-EGFP and GV369-miR-21-EGFP lentiviral system to up- or down-regulate miR-21 gene in LX2 cells. The mRNA expression of miR-21, Smad7 and connective tissue growth factor (CTGF) and protein expression of Smad7, CTGF, Smad1, p-Smad1, Smad2, p-Smad2, Smad2/3, p-Smad2/3, TGF-β receptor I and α-SMA were assayed...
November 21, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27871882/schistosomal-derived-lysophosphatidylcholine-triggers-m2-polarization-of-macrophages-through-ppar%C3%AE-dependent-mechanisms
#9
Leonardo Santos Assunção, Kelly G Magalhães, Alan Brito Carneiro, Raphael Molinaro, Patrícia E Almeida, Georgia C Atella, Hugo C Castro-Faria-Neto, Patrícia T Bozza
Mansonic schistosomiasis is a disease caused by the trematode Schistosoma mansoni, endemic to tropical countries. S. mansoni infection induces the formation of granulomas and potent polarization of Th2-type immune response. There is great interest in understanding the mechanisms used by this parasite that causes a modulation of the immune system. Recent studies from our group demonstrated that lipids of S. mansoni, including lysophosphatidylcholine (LPC) have immunomodulatory activity. In the present study, our aim was to investigate the role of lipids derived from S...
November 15, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27853113/ancient-human-parasites-in-ethnic-chinese-populations
#10
REVIEW
Hui-Yuan Yeh, Piers D Mitchell
Whilst archaeological evidence for many aspects of life in ancient China is well studied, there has been much less interest in ancient infectious diseases, such as intestinal parasites in past Chinese populations. Here, we bring together evidence from mummies, ancient latrines, and pelvic soil from burials, dating from the Neolithic Period to the Qing Dynasty, in order to better understand the health of the past inhabitants of China and the diseases endemic in the region. Seven species of intestinal parasite have been identified, namely roundworm, whipworm, Chinese liver fluke, oriental schistosome, pinworm, Taenia sp...
October 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/27842570/nitric-oxide-and-cytokine-production-by-glial-cells-exposed-in-vitro-to-neuropathogenic-schistosome-trichobilharzia-regenti
#11
Tomáš Macháček, Lucie Panská, Hana Dvořáková, Petr Horák
BACKGROUND: Helminth neuroinfections represent a serious health problem, but host immune mechanisms in the nervous tissue often remain undiscovered. This study aims at in vitro characterization of the response of murine astrocytes and microglia exposed to Trichobilharzia regenti which is a neuropathogenic schistosome migrating through the central nervous system of vertebrate hosts. Trichobilharzia regenti infects birds and mammals in which it may cause severe neuromotor impairment. This study was focused on astrocytes and microglia as these are immunocompetent cells of the nervous tissue and their activation was recently observed in T...
November 14, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27836498/repositioning-of-chlorambucil-as-a-potential-anti-schistosomal-agent
#12
Maha M Eissa, Shereen F Mossallam, Eglal I Amer, Layla K Younis, Hoda A Rashed
As parasites and cancer cells share many lifestyle and behavioral resemblances, repositioning of anti-cancerous agents as anti-parasitic is quite trendy, especially those sharing the same therapeutic targets. Therefore, the current study investigated the in vitro efficacy of ascending concentrations of chlorambucil (0.5-20μg/ml) against adult Schistosoma mansoni worms, over 72h. Additionally, its in vivo effects against the different developmental stages of the worm were assessed, after an oral dose of 2.5mg/kg/day for five successive days, through evaluating the worm load reduction and worms' morphological alterations and oogram changes...
November 9, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27821159/ceratonia-siliqua-pod-extract-ameliorates-schistosoma-mansoni-induced-liver-fibrosis-and-oxidative-stress
#13
Ebtesam M Al-Olayan, Manal F El-Khadragy, Reem A Alajmi, Mohamed S Othman, Amira A Bauomy, Shaimaa R Ibrahim, Ahmed E Abdel Moneim
BACKGROUND: Schistosomiasis is a prevalent parasitic disease found predominantly in tropical and sub-tropical areas of the developing world, with the second highest socioeconomic and public health burden despite strenuous control efforts. In the present study, we aimed to investigate the ameliorative effects of Ceratonia siliqua pod extract (CPE) on liver fibrosis and oxidative stress in mice infected with Schistosoma mansoni. METHODS: The schistosomal hepatopathologic mouse model was established by tail immersion with schistosomal cercaria...
November 8, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27812220/tissue-degeneration-following-loss-of-schistosoma-mansoni-cbp1-is-associated-with-increased-stem-cell-proliferation-and-parasite-death-in-vivo
#14
Julie N R Collins, James J Collins
Schistosomiasis is second only to malaria in terms of the global impact among diseases caused by parasites. A striking feature of schistosomes are their ability to thrive in their hosts for decades. We have previously demonstrated that stem cells, called neoblasts, promote homeostatic tissue maintenance in adult schistosomes and suggested these cells likely contribute to parasite longevity. Whether these schistosome neoblasts have functions independent of homeostatic tissue maintenance, for example in processes such as tissue regeneration following injury, remains unexplored...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27805245/active-schistosomiasis-severe-hypereosinophilia-and-rapid-progression-of-chronic-endomyocardial-fibrosis
#15
A O Mocumbi, C Goncalves, A Damasceno, C Carrilho
Endomyocardial fibrosis (EMF) is a neglected restrictive cardiomyopathy of unknown aetiology and unclear natural history, which causes premature deaths in endemic areas. We present the case of a 13-year-old boy from a highly endemic area, presenting with concurrent signs of chronic EMF and severe hypereosinophilia associated with active schistosomal cystitis. We discuss the possible role of this parasitic infection in determining the progression of EMF in endemic areas for both conditions.
October 23, 2016: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/27792733/blockade-of-pd-1-signaling-enhances-th2-cell-responses-and-aggravates-liver-immunopathology-in-mice-with-schistosomiasis-japonica
#16
Sha Zhou, Xin Jin, Yalin Li, Wei Li, Xiaojun Chen, Lei Xu, Jifeng Zhu, Zhipeng Xu, Yang Zhang, Feng Liu, Chuan Su
BACKGROUND: More than 220 million people worldwide are chronically infected with schistosomes, causing severe disease or even death. The major pathological damage occurring in schistosomiasis is attributable to the granulomatous inflammatory response and liver fibrosis induced by schistosome eggs. The inflammatory response is tightly controlled and parallels immunosuppressive regulation, constantly maintaining immune homeostasis and limiting excessive immunopathologic damage in important host organs...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27776999/first-detection-of-allobilharzia-visceralis-schistosomatidae-trematoda-from-cygnus-cygnus-in-japan
#17
Kei Hayashi, Madoka Ichikawa-Seki, Yuma Ohari, Uday Kumar Mohanta, Junya Aita, Hiroshi Satoh, Shiori Ehara, Minami Tokashiki, Tomoko Shiroma, Ayumi Azuta, Nozomi Oka, Takuya Watanabe, Ryo Harasawa, Satoshi Inohana, Toshihiro Ichijo, Kazuhisa Furuhama
Adult schistosomes were detected in the veins or capillaries of the large intestine, mesentery, liver, and adrenal glands in eight of 13 whooper swans (Cygnus cygnus) examined in Iwate Prefecture, Japan. However, neither eggs nor severe tissue injuries were observed in any of the swans. The schistosomes were definitively identified as Allobilharzia visceralis based on the nucleotide sequences of the ribosomal internal transcribed spacer (ITS) region. Allobilharzia visceralis infections have been reported in whooper swan in Iceland and tundra swan (Cygnus columbianus) in North America...
October 21, 2016: Parasitology International
https://www.readbyqxmd.com/read/27771462/novel-synthetic-compounds-with-endoperoxide-structure-damage-juvenile-stage-of-schistosoma-mansoni-by-targeting-lysosome-like-organelles
#18
Masafumi Yamabe, Takashi Kumagai, Rieko Shimogawara, Emmanuel Awusah Blay, Akina Hino, Koichiro Ichimura, Akira Sato, Hye-Sook Kim, Nobuo Ohta
The new synthetic compound 1,2,6,7-tetraoxaspiro[7.11]nonadecan (N-89), a novel anti-malaria drug candidate, is also a promising drug candidate against schistosomiasis with killing effects against juvenile stage of S. mansoni. In order to investigate how N-89 kills schistosomes, we used a derivative of N-89, 6-(1,2,6,7-tetraoxaspiro[7.11] nonadec-4-yl)hexan-1-ol (N-251), which enables us to conjugate with fluorescent reagents. Firstly, N-251 showed strong killing effects to larvae of S. mansoni in vitro. Ultrastructural analysis showed the disruptions of the lysosome-like organelles or the acetabular glands, followed by cytoplasmic lysis inside the worm body in N-251-treated group under electron microscopy...
October 19, 2016: Parasitology International
https://www.readbyqxmd.com/read/27770739/schistosomal-appendicitis-in-kuwait-a5-year-study
#19
Fawaz Abo-Alhassan, Fatemah Faras, Yousef M Malek, Munish Joneja, Piyaray M Dhar
BACKGROUND: Appendicular schistosomiasis is an unusual etiology of acute appendicitis, which has been reported in countries endemic in schistosomiasis, such as sub-saharan Africa and South America. Nowadays, due to globalization, this disease has been diagnosed in non-endemic countries. Kuwait is a country possessing a larger percentage of foreigners than national citizens. Therefore, several cases of schistosomal appendicitis were found. METHOD: The clinicopathological records of all patients that underwent appendectomy during January 2007 and December 2011 were recorded from the archives of Al-Adan Hospital in Kuwait...
October 17, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27764257/hiv-1-integrates-widely-throughout-the-genome-of-the-human-blood-fluke-schistosoma-mansoni
#20
Sutas Suttiprapa, Gabriel Rinaldi, Isheng J Tsai, Victoria H Mann, Larisa Dubrovsky, Hong-Bin Yan, Nancy Holroyd, Thomas Huckvale, Caroline Durrant, Anna V Protasio, Tatiana Pushkarsky, Sergey Iordanskiy, Matthew Berriman, Michael I Bukrinsky, Paul J Brindley
Schistosomiasis is the most important helminthic disease of humanity in terms of morbidity and mortality. Facile manipulation of schistosomes using lentiviruses would enable advances in functional genomics in these and related neglected tropical diseases pathogens including tapeworms, and including their non-dividing cells. Such approaches have hitherto been unavailable. Blood stream forms of the human blood fluke, Schistosoma mansoni, the causative agent of the hepatointestinal schistosomiasis, were infected with the human HIV-1 isolate NL4-3 pseudotyped with vesicular stomatitis virus glycoprotein...
October 2016: PLoS Pathogens
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