Molecular characteristics of Cryptosporidium sp. isolated from imported breeding dairy cows in a dairy farm in Shenzhen, China

Aim To investigate the prevalence of Cryptosporidium sp. and B. hominis among human immunodeficiency virus (HIV) positive patients in two different outpatient clinics, Haji Adam Malik General Hospital and Primary Care Centre of Padang Bulan, Medan, Indonesia, between two interval periods. Method Cryptosporidium spp. microscopic examination, as well as Jones' medium for B. hominis, were conducted in the Parasitology Laboratory, enzyme-linked immunosorbent assay (ELISA) was done in the Multidisciplinary Laboratory, Faculty of Medicine, Universitas Sumatera Utara. This was a cross-sectional study, involving 54 diarrheic HIV positive patients (44 males, 10 females). The data were analysed by Spearmen rank correlation, interrater agreement, and 2 tests. Results Infection rate for Cryptosporidium spp. and B. hominis was 24% (13 patients) and 9% (five patients), respectively. The prevalence of CD4 cell count below 200 cell/mm3 was relatively high, 29.6% (16 patients). There was a significant relationship between cryptosporidiosis and CD4 cell count (p=0.01; OR 1.57; 95% CI 1.25-1.99). Microscopic examination was superior over ELISA, whose diagnostic value for sensitivity and specificity was 46.15% and 100.0%, respectively, and Kappa (K) coefficient of 0.56. Conclusion The prevalence of cryptosporidiosis among HIV patients was still relatively high. CD4 count showed a significant relationship with Cryptosporidium spp. infection, but not with Blastocystic hominis. Microscopic examination is still the most reliable technique to diagnose the parasites in faecal samples.

Pacientes em tratamento de hemodiálise devido ao seu sistema imunológico diminuído são facilmente acometidos por enteroparasitas, que levam a uma piora do quadro de saúde destes indivíduos. O objetivo desta pesquisa foi identificar a prevalência de enteroparasitas nos pacientes renais crônicos em tratamento de hemodiálise e possíveis associações com os fatores socioambientais. Trata-se de um estudo transversal com 53 pacientes. Para análise de associação foi utilizado os testes qui-quadrado (x²) de Pearson e Razão de Odds (OR). Os exames coprológicos foram analisados utilizando as técnicas de Hoffman e Sheather. A positividade de enteroparasitas atingiu 92.5%, sendo Blastocystis sp. o mais predominante (95.9%). Em relação aos helmintos, apenas Ascaris lumbricoides foi encontrado (4.1%). Infecções mistas apareceram em 53% dos casos. A associação dupla mais comum foi entre Blastocystis sp. e Endolimax nana, observada em 22.4% dos casos. Nossos resultados mostraram alta prevalência de protozoários de repercussão preocupante para saúde desses pacientes como Cryptosporidium sp., Giardia lamblia e Entamoeba histolytica, evidenciando a necessidade de estratégias de prevenção das infecções parasitárias e intervenções adequadas nos pacientes sob tratamento de hemodiálise.

The comparison between male and female of infection Cryptosporidium in Baghdad

Vorinostat is a drug used to treat cutaneous T cell lymphoma whose action mechanism is based on Histone Deacetylase inhibition. Histone Deacetylases are a family of enzymes that remove acetyl groups from histone and non-histone proteins that control many crucial processes, such as gene regulation, cell cycle progression, differentiation, and apoptosis. Histone Deacetylase homologues are also expressed in parasites of the genus Plasmodium, Leishmania, Cryptosporidium, Schistosoma, Entamoeba, and others. In this way, antiparasitic properties of Vorinostat have been explored. The aim of this review is to report the current state knowledge of Vorinostat as antiparasitic drug against Plasmodium, Leishmania, Cryptosporidium, Schistosoma and Entamoeba in order to support future investigation in this field. The authors revised the recent and relevant literature concerning the topic and discussed advances and limitations of studies on Vorinostat as potential drug to treat human parasitic diseases. Vorinostat has been efficient in vitro and, in some cases, in vivo, against parasites that cause parasitic diseases, such as malaria, leishmaniasis, cryptosporidiosis, amoebiasis, and schistosomiasis. In vitro and in vivo models have demonstrated the antiparasitic activity of Vorinostat, however, the challenge is to assay its activity in animal models and to evaluate if Vorinostat is safe for humans as new alternative to treat human parasitic infections.

Cryptosporidium spp. is an obligate intracellular parasite that has become a community threat. The pathological consequences of cryptosporidiosis vary not only in different Cryptosporidium species but even among different isolates of the same species. The present study aimed to track the serological and immunohistopathological differences between animals infected by Cryptosporidium parvum "Iowa isolate" (CPI) and Cryptosporidium parvum "water isolate" isolated from a local water supply in Assiut Governorate, Egypt (CPW). Three experimental groups were encountered: negative control group (C), the CPI group and the CPW group; each contains ten Swiss albino mice. Serum cytokine: IL10 and TNF-α were measured. Expression of Cryptosporidium antigen and CD3 in the intestinal, pulmonary and brain tissue were evaluated through immunohistochemical assay. IL10 and TNF-α were elevated in both infected groups, over expression of Cryptosporidium protein and CD3 in the intestinal, pulmonary and brain tissue in CPW infected group compared to Iowa infected one. Multi-organs affection occurred in the CPW indicating more severe pathogenicity and virulence than standard Iowa isolate. The local C. parvum isolate was more virulent than tested Iowa isolate as it spread extra-intestinally to reach brain tissue.

Cryptosporidium spp. in calves: a description of an outbreak

Correction to: Chapter 10 in: Susanne Warrenfeltz, Jessica C. Kissinger, and On Behalf of the EuPathDB Team.

In the present study, a total of 615 fecal samples from veterinary clinics were screened by microscopy for the presence of Cryptosporidium and Giardia oocysts. Molecular genotyping of Cryptosporidium and Giardia were carried out using PCR and sequence analysis. Overall, Cryptosporidium and Giardia oocysts were detected in the 0.6% (2/315) and 1.9% (6/315) of dogs and in the 0.7% (2/300) and 1.3% (4/300) of cats, respectively. Sequencing revealed the presence of C. canis (n = 2) in dogs and C. felis (n = 2) in cats. Moreover, G. intestinalisassemblage D (n = 2), C (n = 3) and A, sub-assemblage AII (n = 1) were identified in dogs; G. intestinalis assemblage F (n = 3) and assemblage A, sub-assemblage AI (n = 1) were identified in cats. The highest prevalence of Giardia was observed in dogs younger than one year (6/315), and in those with diarrhea (p < 0.05). Data of the study suggest that dogs and cats play a minor role in the zoonotic transmission of cryptosporidiosis and giardiasis in Southwestern Iran.

Introduction: Cryptosporidium is an intracellular protozoan parasite that can cause a varied severity of disease from a self-limited diarrhea in immunocompetent hosts and severe debilitating diarrhea with weight loss and malabsorption in immunocompromised patients. Patients with symptoms greater than two weeks typically are treated with nitazoxanide for three days. Case Report: 11 year old female with a history of SLE, diffuse proliferative glomerulonephritis, and hypertension was admitted to the pediatric hospital for persistent worsening watery diarrhea and a six kilogram weight loss over a three week period. Her stool …

Cryptosporidiosis is a diarrheal disease caused by two species: Cryptosporidium hominis, which is found only in humans, and C. parvum, which is found

Bovine cryptosporidiosis in calves : A Review

Co-Infection of CMV and Cryptosporidium in a Patient With AIDS

Objective Evaluation of the therapeutic effect of phenyl vinyl sulfone (PVS) as cysteine protease inhibitors, nitazoxanide (NTZ), and combined therapy on Cryptosporidium parvum infection regarding the parasitological and histopathological parameters. Background Cryptosporidium spp. had been identified as the second most important diarrheal pathogen after rotavirus in young children. The immune status of the host plays a critical role. There is no reliable treatment for cryptosporidiosis, as the only approved drug NTZ provides no benefit for immunocompromised patients. Materials and methods A total of 180 female laboratory-bred Swiss albino mice were divided into two major divisions, immunocompetent and immunosuppressed, with the following groups for each one, respectively: negative control (I and VI), infected control (II and VII), infected treated with PVS (III and VIII), infected treated with NTZ (IV and IX), and infected treated combined (V and X). Stool examination for oocyst shedding was done at different days postinfection, and mice were killed at 18 and 30 days postinfection (groups A and B, respectively). Histopathological assessment of the ileum was done, and the endogenous developmental stages of the parasite were counted. Results Combined therapy in groups V and X resulted in the highest reduction in Cryptosporidium spp. oocysts shedding (P = 0.044 and Conclusion Combined therapy is more effective than either NTZ or PVS used alone. NTZ is still a better treatment option than PVS.

Cryptosporidiosis is an infectious protozoan disease that affects a wide range of animals including reptiles. This is the first report of cryptosporidiosis in a fire skink (Lepidothyris fernandi), an insectivorous reptile commonly found in tropical West Africa. Faecal sample was collected from a fire skink at necropsy for the detection of parasites by faecal sedimentation method, Ziehl-Neelsen (ZN) acid-fast staining, Nested Polymerase Chain Reaction (PCR) and Nucleotide sequencing. Sections of the intestines were also processed for histopathology. Light microscopy revealed the presence of Ophidascarids sp. eggs and Cryptosporidium oocysts. Amplification of the 18S rRNA gene and nucleotide sequencing confirmed Cryptosporidium varanii as the infecting species. Histopathology revealed cellular infiltration and disruption of the epithelial cells along the brush border characteristic of intestinal inflammation.

Fecal DNA samples from 17 cattle and 38 water buffaloes found to be infected with Cryptosporidium oocysts using Kinyoun acid fast stain from a previous study, were subjected to loop-mediated isothermal amplification (LAMP) assay using specific primers for Cryptosporidium parvum (C. parvum) from three municipalities, Maria, Baler and San Luis of the province of Aurora in the Philippines. Results of the fecalysis using Kinyoun acid fast stain and LAMP assay were compared with the PCR results of the examined farmer/owner who raised these animals to determine the possible zoonoses of C. parvum between the farmers and their animals. Using LAMP assay, only 41% (7/17) were positive in cattle and 76% (29/38) in water buffaloes. Out of the seven LAMP positive cases in cattle, 86% (6/7) came from Maria and 14% (1/7) from Baler. Out of 29 LAMP positive cases in water buffaloes, 62% (18/29) came from Maria, 24% (7/29) from Baler and 14% (4/29) from San Luis. Comparing with the earlier results for probable zoonoses of C. parvum between the farmers and their animal was determined. Eight farmers that were positive in PCR and with their water buffaloes, positive in LAMP assay were detected to have C. parvum. Only one farmer with his cattle was detected positive of Cryptosporidium spp. in PCR, however, it was negative in LAMP assay hence, a non-parvum species might infected the farmer and the animal.

The objective of the study was to evaluate the status of parasitic infections in captive snakes of Kerala. Faecal samples were collected from captive snakes of State Museums and Zoos of Thrissur and Thiruvananthapuram. Parasites were screened by direct smear, sedimentation, simple floatation and Shaether’s sugar floatation method. Fortynine snakes from 15 species were screened and 35 (71.4%) were found to be positive. While 80% of the snakes from Thrissur were found to be positive for parasitic infections, 70.6% of the samples from Thiruvananthapuram zoo were positive. Strongyloides sp. was the most prominent infection, accounting for 25.7% of all infections, followed by Capillaria sp. (22.8%) and Strongyles (20%). The preliminary investigation of captive Green Anaconda samples from Thiruvananthapuram zoo revealed mites, non-sporulated Coccidia of the genus Eimeria sp. and Cryptosporidium sp. It is understood that most of the infections of the captive snakes were acquired through the feeding and handling of the snakes, therefore periodical sampling is needed for both the snakes and their prey.

Background: Enteric opportunistic parasites are the leading cause of gastrointestinal tract infection in patients with HIV/AIDS. This study was carried out to establish the occurrence of intestinal coccidian parasitic infection among the HIV positive patients in Eastern Nepal. Materials and method: This was a hospital based study carried out in Microbiology laboratory, BPKIHS, Dharan, Nepal over a period of one year (May 2013 to April 2014). All HIV positive patients with CD4+ count ?200cells/l were included. Total 50 HIV positive patients participated in the study over one year period. Stool sample was collected after taking an informed written consent from the patient. Isolation and identification was done as per standard Microbiological procedure. Result: . The overall prevalence of intestinal parasitic infection in present study was 38%. Among the parasites, coccidian parasites comprised of 57.89% of total parasitosis, among 20% (n= 10) cases. Out of total coccidian parasites identified Cryptosporidium parvum comprised 72.7%, Cyclospora cayetanensis 18.2% and Isospora belli 9.1%. One patient had mixed Cryptosporidial and Cyclospora infection. Conclusion Coccidian parasitic infections are common in HIV positive patients at lower CD4+ count in Eastern part of Nepal.

Introduction:The use of a common template for observer studies is a way of structuring the experiences gained (lessons observed and learned) from such studies. This facilitates the comparison of reports within one's own field as well as between different sectors. It also facilitates the implementation of joint observer activities and joint observer reports, promoting more comprehensive and holistic learning from the events.Methods:Using the Utstein method for studying disasters and the Swedish Disaster Medicine study organization (KAMEDO) as an inspiration, a number of Swedish governmental authorities and organizations compiled a template for presenting standardized observer reports. The following tides have been identified to be included: (1) Tide; (2) Preface; (3) Observers and Authors; (4) Summary and Experiences; (5) Introduction/Material and Methods; (6) Hazard; (7) Background (including pre-event status and preparedness); (8) Event; (9) Damage; (10) Disturbances; (11) Responses; (12) Recovery and Development; (13) Discussion; (14) References; (15) Appendices; (16) Keywords; (17) Index; and (18) Abbreviations.Results:This template has been used successfully for observer studies within the health sector (evacuation of Swedes from the war in Lebanon, 2006, a power supply failure at a major university hospital in Stockholm, 2007), within the food sector (Cryptosporidium contamination of water supply in Ireland, 2007, consequences for water supply from floods in the UK, 2007, sewage contamination of water supply in Finland, 2007) and within crisis management and rescue services sectors (floods in the UK, 2007, sewage contamination of water supply in Finland, 2007, wild fires in California, 2007)Conclusions:The use of a common, standardized template for the documentation of lessons observed and learned from major disasters/crises has proven useful. In addition to enhancing the completeness and learning value of the reports, it also has proven to be a useful tool for stimulating intra-sectoral cooperation and learning.

To study the occurrence of Cryptosporidium infection in laboratory rats (Rattus norvegicus) raised for experimental usage, 134 faecal samples were obtained from two rearing houses in Ibadan and examined for the presence of Cryptosporidium oocyst using the modified acid fast staining technique. Cryptosporidium species in 2 samples positive for microscopy were further characterized by a nested polymerase chain reaction (PCR) amplifying the 18S rRNA gene. Two of 134 samples were positive for the Cryptosporidium oocysts. Sequencing of the small-subunit rRNA amplicons identified the species in the two PCR positive samples as Cryptosporidium andersoni and Cryptosporidium rat genotype. These findings showed that laboratory rat is a potential reservoir for diverse Cryptosporidium species and suggests that laboratory rats should be screened for Cryptosporidium infection prior to experiments, especially where pathogen free animals are not available. This the first report to identify Cryptosporidium species infecting laboratory rats in Nigeria.