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https://www.readbyqxmd.com/read/28094201/diagnosing-urogenital-schistosomiasis-dealing-with-diminishing-returns
#1
REVIEW
Loc Le, Michael H Hsieh
Urogenital schistosomiasis, caused by Schistosoma haematobium, is the most prevalent form of schistosomiasis affecting humans, and can result in severe bladder, kidney, ureteral, and genital pathologies. Chronic infection with S. haematobium has been linked with bladder cancer and increased risk for HIV infection. As mass drug administration with praziquantel increases in an attempt to transition from control to elimination of schistosomiasis, the need for updated, more sensitive diagnostic tools becomes more apparent, especially for use in areas of low infection intensity and for individuals with light infections...
January 13, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28092854/biopharmaceutical-characterization-of-praziquantel-cocrystals-and-cyclodextrin-complexes-prepared-by-grinding
#2
Martina Cugovčan, Jasna Jablan, Jasmina Lovrić, Dominik Cinčić, Nives Galić, Mario Jug
Mechanochemical activation using several different co-grinding additives was applied as a green chemistry approach to improve physiochemical and biopharmaceutical properties of praziquantel (PZQ). Liquid assisted grinding with an equimolar amount of citric acid (CA), malic acid (MA), salicylic acid (SA) and tartaric acid (TA) gained in cocrystal formation, which all showed pH-dependent solubility and dissolution rate. However, the most soluble cocrystal of PZQ with MA was chemically unstable, as seen during the stability testing...
January 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28061011/simultaneous-enantiomeric-analysis-of-pharmacologically-active-compounds-in-environmental-samples-by-chiral-lc-ms-ms-with-a-macrocyclic-antibiotic-stationary-phase
#3
D Camacho-Muñoz, B Kasprzyk-Hordern
This paper presents a multi-residue method for direct enantioselective separation of chiral pharmacologically active compounds in environmental matrices. The method is based on chiral liquid chromatography and tandem mass spectrometry detection. Simultaneous chiral discrimination was achieved with a macrocyclic glycopeptide-based column with antibiotic teicoplanin as a chiral selector working under reverse phase mode. For the first time, enantioresolution was reported for metabolites of ibuprofen: carboxyibuprofen and 2-hydroxyibuprofen with this chiral stationary phase...
January 6, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28051054/appendicular-bilharzioma-an-unusual-cause-of-acute-intestinal-obstruction-in-childhood-a-case-report-at-charles-de-gaulle-paediatric-teaching-hospital-of-ouagadougou
#4
Albert Wandaogo, Isso Ouédraogo, Toussaint Wendlamita Tapsoba, Emile Bandré, Francis Somkieta Ouédraogo, Bernadette Béré, Balima Elie
The authors report the case of a 12-year-old boy admitted to the surgical emergency department of Charles de Gaulle Paediatric Teaching Hospital of Ouagadougou for acute abdominal pain. A strangulation of the terminal ileum by a tumour-like appendix wound around the bowel loop was seen during operation. The histological examination of the removed appendix disclosed eggs of Schistosoma haematobium and concluded to bilharzian appendicitis. A course of praziquantel treatment was instituted, and the patient underwent an event-free recovery...
October 2016: African Journal of Paediatric Surgery: AJPS
https://www.readbyqxmd.com/read/28017859/antiparasitic-activity-of-menadione-vitamin-k3-against-schistosoma-mansoni-in-babl-c-mice
#5
Govind J Kapadia, Ingrid A O Soares, G Subba Rao, Fernanda R Badoco, Ricardo A Furtado, Mariana B Correa, Denise C Tavares, Wilson R Cunha, Lizandra G Magalhães
Schistosomiasis is one of the neglected tropical diseases affecting nearly quarter of a billion people in economically challenged tropical and subtropical countries of the world. Praziquantel (PZQ) is the only drug currently available to treat this parasitic disease in spite being ineffective against juvenile worms and concerns about developing resistance to treat reinfections. Our earlier in vitro viability studies demonstrated significant antiparasitic activity of menadione (MEN) (vitamin K3) against Schistosoma mansoni adult worms...
December 23, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27990425/comparative-evaluation-of-anthelmintic-activity-of-edible-and-ornamental-pomegranate-ethanolic-extracts-against-schistosoma-mansoni
#6
Doaa A Yones, Dalia M Badary, Hesham M B Sayed, Soad A H Bayoumi, Azza A Khalifa, Ahmed M El-Moghazy
Due to the development of praziquantel (PZQ) schistosomes resistant strains, the discovery of new antischistosomal agents is of high priority in research. This work reported the in vitro and in vivo effects of the edible and ornamental pomegranate extracts against Schistosoma mansoni. Leaves and stem bark ethanolic extracts of both dried pomegranates were prepared at 100, 300, and 500 μg/mL for in vitro and 600 and 800 mg/kg for in vivo. Adult worms Schistosoma mansoni in RPMI-1640 medium for in vitro and S...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27988094/human-schistosomiasis-in-the-post-mass-drug-administration-era
#7
REVIEW
Francisca Mutapi, Rick Maizels, Alan Fenwick, Mark Woolhouse
Profound changes are occurring in the epidemiology of schistosomiasis, a neglected tropical disease caused by a chronic infection with parasitic helminths of the genus Schistosoma. Schistosomiasis currently affects 240 million people worldwide, mostly in sub-Saharan Africa. The advent and proliferation of mass drug administration (MDA) programmes using the drug praziquantel is resulting in substantial increases in the number of people, mainly children aged 6-14 years, being effectively treated, approaching the point where most people in endemic areas will receive one or more treatments during their lifetimes...
December 14, 2016: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/27986092/urogenital-schistosomiasis-transmission-on-unguja-island-zanzibar-characterisation-of-persistent-hot-spots
#8
Tom Pennance, Bobbie Person, Mtumweni Ali Muhsin, Alipo Naim Khamis, Juma Muhsin, Iddi Simba Khamis, Khalfan Abdallah Mohammed, Fatma Kabole, David Rollinson, Stefanie Knopp
BACKGROUND: Elimination of urogenital schistosomiasis transmission is a priority for the Zanzibar Ministry of Health. Preventative chemotherapy together with additional control interventions have successfully alleviated much of the disease burden. However, a persistently high Schistosoma haematobium prevalence is found in certain areas. Our aim was to characterise and evaluate these persistent "hot-spots" of transmission and reinfection in comparison with low-prevalence areas, to support the intervention planning for schistosomiasis elimination in Zanzibar...
December 16, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27965144/mapping-of-schistosoma-mansoni-in-the-nile-delta-egypt-assessment-of-the-prevalence-by-the-circulating-cathodic-antigen-urine-assay
#9
Ayat A Haggag, Amal Rabiee, Khaled M Abd Elaziz, Albis F Gabrielli, Rehab Abdel Hay, Reda M R Ramzy
In line with WHO recommendations on elimination of schistosomiasis, accurate identification of all areas of residual transmission is a key step to design and implement measures aimed at interrupting transmission in low-endemic settings. To this purpose, we assessed the prevalence of active S. mansoni infection in five pilot governorates in the Nile Delta of Egypt by examining schoolchildren (6-15 years) using the Urine-Circulating Cathodic Antigen (Urine-CCA) cassette test; we also carried out the standard Kato-Katz (KK) thick smear, the monitoring and evaluation tool employed by Egypt's national schistosomiasis control programme...
December 11, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27955687/decline-in-transmission-of-schistosomiasis-mansoni-in-oman
#10
Idris Al Abaidani, Seif Al-Abri, Mahmoud Shaban, Satish L Ghugey, Salem Al Kathery, Khalid Al-Mashikhi, Amadou Garba, Albis Francesco Gabrielli
BACKGROUND: Intestinal schistosomiasis due to Schistosoma mansoni was first reported in Oman in 1979. We describe the trend in parasitological and serological prevalence of human infection with S. mansoni in the endemic area over the period 1982-2014, and the compliance of data generated by the national monitoring and evaluation system with schistosomiasis elimination criteria set by the Ministry of Health of Oman. METHODS: Parasitological and serological assessments were carried out on population (mainly children) living in the area at risk for schistosomiasis in Dhofar, the country's only endemic Governorate, for a period of over 30 years...
December 12, 2016: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/27940699/mechanistic-pathways-from-early-gestation-through-infancy-and-neurodevelopment
#11
Sangshin Park, David C Bellinger, Meredith Adamo, Brady Bennett, Nam-Kyong Choi, Palmera I Baltazar, Edna B Ayaso, Donna Bella S Monterde, Veronica Tallo, Remigio M Olveda, Luz P Acosta, Jonathan D Kurtis, Jennifer F Friedman
OBJECTIVE: To identify pathways through which pre- and postnatal factors directly or indirectly affect infant neurodevelopment at 12 months of age among Filipino infants. METHODS: The Bayley Scales of Infant Development, third edition was used to assess the development of 314 infants of mothers enrolled in a trial examining the safety and efficacy of praziquantel during pregnancy. Maternal covariates included socioeconomic status, iron and nutritional status, cognitive performance, and alcohol intake...
December 2016: Pediatrics
https://www.readbyqxmd.com/read/27939558/a-new-global-strategy-for-the-elimination-of-schistosomiasis
#12
EDITORIAL
Allen G P Ross, Thao N Chau, Marianette T Inobaya, Remigio M Olveda, Yuesheng Li, Donald A Harn
Mass drug administration utilising a single oral dose of 40mg/kg of praziquantel (PZQ) has been endorsed and advocated by the World Health Organisation (WHO) for the global control and elimination of schistosomiasis. However, this strategy is failing primarily because the drugs are not getting to the people who need them the most. The current global coverage is 20%, the drug compliance rate is less than 50%, and the drug efficacy is approximately 50%. Thus in reality, only about 5% of the reservoir human population is actually receiving intermittent chemotherapy...
January 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27935330/design-and-optimization-of-thermosensitive-nanoemulsion-hydrogel-for-sustained-release-of-praziquantel
#13
Zhaotong Cong, Yanbin Shi, Xue Peng, Bei Wei, Yu Wang, Jincheng Li, Jianyong Li, Jiazhong Li
OBJECTIVE: This work aimed to develop an alternative sustained-release thermosensitive praziquantel-loaded nanoemulsion (PZQ-NE) hydrogel for better schistosomiasis treatment. SIGNIFICANCE: PZQ-NE-dispersed chitosan/glycerol 2-phosphate disodium/HPMC (NE/CS/β-GP/HMPC) hydrogel was successfully prepared to improve bioavailability of PZQ. METHODS: Solubility tests and pseudo-ternary phase diagrams were applied to screen optimal oils, surfactants and co-surfactants of NE...
December 9, 2016: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/27927864/efficacy-and-safety-of-praziquantel-against-light-infections-of-opisthorchis-viverrini-a-randomised-parallel-single-blind-dose-ranging-trial
#14
Somphou Sayasone, Isabel Meister, Jason R Andrews, Peter Odermatt, Youthanavanh Vonghachack, Syda Xayavong, Kanpaseuth Senggnam, Khampheng Phongluxa, Jan Hattendorf, Isaac I Bogoch, Jennifer Keiser
BACKGROUND: The liver fluke Opisthorchis viverrini, highly prevalent in Southeast Asia, is an important public health burden, including a risk factor for developing an aggressive bile duct cancer, cholangiocarcinoma, in chronically infected patients. Praziquantel, administered at single 40 mg/kg in preventive chemotherapy programs and 3 x 25 mg/kg for individual treatment is the drug of choice, yet information on the nature of the dose-response relationship is lacking. METHODS: We performed a randomized, parallel, single blind dose-ranging Phase 2 trial in Lao PDR in O...
December 7, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27926921/schistosoma-mansoni-infection-can-jeopardize-the-duration-of-protective-levels-of-antibody-responses-to-immunizations-against-hepatitis-b-and-tetanus-toxoid
#15
Diana K Riner, Eric M Ndombi, Jennifer M Carter, Amos Omondi, Nupur Kittur, Emmy Kavere, Harrison K Korir, Briana Flaherty, Diana Karanja, Daniel G Colley
BACKGROUND: Schistosomiasis is a disease of major public health importance in sub-Saharan Africa. Immunoregulation begins early in schistosome infection and is characterized by hyporesponsiveness to parasite and bystander antigens, suggesting that a schistosome infection at the time of immunization could negatively impact the induction of protective vaccine responses. This study examined whether having a Schistosoma mansoni infection at the time of immunization with hepatitis B and tetanus toxoid (TT) vaccines impacts an individual's ability to achieve and maintain protective antibody levels against hepatitis B surface antigen or TT...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27905117/pharmacokinetics-of-new-high-concentration-and-long-acting-praziquantel-oily-suspensions-after-intramuscular-administration-in-cattle
#16
M Qian, L Wei, L Hao, S Tang
The aim of the study was to develop praziquantel (PZQ) oily suspensions with 30% PZQ high concentration for intramuscular injection and investigate their pharmacokinetics in cattle. Two optimized formulations containing 30% PZQ were developed in this study, and their quality met the technical standards set by the Ministry of Agriculture of the People's Republic of China. After intramuscular administrations of the suspensions (30 mg/kg), no significant differences were observed between the two oily suspensions...
December 1, 2016: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27903284/gp50-as-a-promising-early-diagnostic-antigen-for-taenia-multiceps-infection-in-goats-by-indirect-elisa
#17
Xing Huang, Jing Xu, Yu Wang, Cheng Guo, Lin Chen, Xiaobin Gu, Weimin Lai, Xuerong Peng, Guangyou Yang
BACKGROUND: Coenurosis is caused by coenurus, the metacestode of Taenia multiceps, which mainly parasitizes the brain and spinal cord of cattle, sheep and goats. To date, no widely-approved methods are available to identify early coenurus infection. METHODS: In this study, we identified a full-length cDNA that encodes GP50 (TmGP50) from the transcriptome of T. multiceps, and then cloned and expressed in E. coli. The native proteins in adult stage and coenurus were located via immunofluorescence assays, while the potential of recombinant TmGP50 protein (rTmGP50) for indirect ELISA-based serodiagnostics was assessed using native goat sera...
December 1, 2016: Parasites & Vectors
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
#18
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)...
February 2017: Acta Tropica
https://www.readbyqxmd.com/read/27884406/-clinical-approach-to-imported-eosinophilia
#19
Elías Cañas García-Otero, Julia Praena-Segovia, Maite Ruiz-Pérez de Pipaón, Xerach Bosh-Guerra, Magdalena Sánchez-Agüera, Daniel Álvarez-Martínez, José Miguel Cisneros-Herreros
Eosinophilia is a common finding in international travelers and immigrants, being an helmintic infection its main etiology. The positive predictive value of eosinophilia for an helmintosis is low in travellers. Eosinophilia may be an incidental finding, or symptomatic, and it represents a clinical challenge due to the low sensitivity and specificity of direct and indirect parasitological diagnostic tests, respectively. It requires a structured approach based on geographical areas, environmental exposures and behavioral risks, and associated symptoms...
December 2016: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/27879464/severe-pleuropulmonary-paragonimiasis-caused-by-paragonimus-mexicanus-treated-as-tuberculosis-in-ecuador
#20
Manuel Calvopina, Daniel Romero-Alvarez, Rubén Macias, Hiromu Sugiyama
A 30-year-old male, from a subtropical region of Ecuador, was hospitalized with a 5-year history of persistent cough with rusty brown sputum, chest pain, and progressive dyspnea. The patient underwent thoracic surgery 3 years ago for pleural effusion and subsequently received a 9-month regimen treatment of tuberculosis. However, there was no clinical resolution and symptoms became progressively worse. A chest radiograph and computerized tomography scan showed several small nodules in both lungs. Eggs of Paragonimus spp...
November 22, 2016: American Journal of Tropical Medicine and Hygiene
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