Quick and efficient purification of Giardia intestinalis cysts from fecal samples

2006 ◽  
Vol 99 (3) ◽  
pp. 300-302 ◽  
Author(s):  
M. E. Alvarado ◽  
M. Wasserman
Keyword(s):  
Giardia Intestinalis ◽  
Fecal Samples

High‐Yield Purification of Giardia intestinalis Cysts from Fecal Samples

2020 ◽  
Vol 59 (1) ◽  
Author(s):  
Paul Ogbuigwe ◽  
Anthony B. Pita ◽  
Matthew A. Knox ◽  
Niluka Velathanthiri ◽  
David T. S. Hayman
Keyword(s):  
Giardia Intestinalis ◽  
High Yield ◽  
Fecal Samples

scholarly journals FREQUENCY OF ENTEROPARASITOSES IN PRESCHOOL CHILDREN ATTENDING DAYCARE CENTERS: A SURVEY APPLYING PARASITOLOGICAL AND IMMUNOLOGICAL METHODS

2019 ◽  
Vol 48 (2) ◽  
pp. 121-133
Author(s):  
Gabriela Cardoso Goes ◽  
Karina Costa Coelho Gonçalves ◽  
Adriana Pittella Sudré ◽  
Danuza Pinheiro Bastos Garcia Mattos ◽  
Beatriz Brener ◽  
...  
Keyword(s):  
Optical Microscopy ◽  
Entamoeba Histolytica ◽  
Intestinal Parasites ◽  
Parasite Infection ◽  
Giardia Intestinalis ◽  
Diagnostic Methods ◽  
Immunological Methods ◽  
Enzyme Linked Immunosorbent Assay ◽  
Fecal Samples ◽  
Daycare Centers

The present study evaluated the frequency of intestinal parasitoses in children in public day care centers applying parasitological and immunological diagnostic methods. Fecal samples from 121 children from six public daycare centers were analyzed using parasitological techniques. Epidemiological data were obtained through a questionnaire, where parents and / or guardians were asked, for instance, whether the children had contact with soil, ate raw food, such as vegetables or raw or undercooked meat, normally walked around barefoot or had contact with animals. Fecal samples from 82 children were also tested for Giardia intestinalis and Cryptosporidium sp. coproantigen using the enzyme-linked immunosorbent assay (ELISA) which was also used for Entamoeba coproantigen detection only in samples that tested positive for the parasite by parasitological stool exam/optical microscopy. Intestinal parasite infection was noted in 23.1% (28/121) of the children. The most frequent parasite was Giardia intestinalis (13.2%), followed by Entamoeba coli (5.8%), Blastocystis spp. (1.7%), Endolimax nana (1.7%), Enterobius vermicularis (1.7%), Cystoisospora belli (0.8%),Entamoeba histolytica/E. dispar complex (0.8%), and Ascaris lumbricoides (0.8%). Positivity for parasite infection using parasitological stool exams was significantly associated with age groups, with a higher frequency in 4 to 6 year old children (p=0.03). No association or significant variations were noted in the prevalence of intestinal parasites in relation to the epidemiological variables studied. All samples were negative for Cryptosporidium sp. and Entamoeba histolytica detected by immunological testing, and 17.1% (14/82) children tested positive for Giardia intestinalis, although using parasitological exam/optical microscopy, only 14.6% (12/82) tested positive. The high incidence of intestinal parasites, especially protozoans, suggests probable interpersonal transmission among the children, environmental contamination, or even contaminated food/water intake. Thus, consolidation of preventive measures and efficient diagnostic resources as well as control of intestinal parasites and patient treatment are of utmost importance.

Comparação de testes coproparasitológicos em criadouro comercial de psitacídeos exóticos

2020 ◽  
Vol 3 (5) ◽  
pp. 100-107
Author(s):  
Marina Camargo de Sousa ◽  
◽  
Julia Ronzani Vial ◽  
Rodrigo Hidalgo Friciello Teixeira ◽  
Andrea Cristina Higa Nakaghi ◽  
...  
Keyword(s):  
Statistical Tests ◽  
Companion Animals ◽  
Clinical Importance ◽  
Breeding Site ◽  
Chi Square ◽  
Fecal Samples ◽  
Breeding Sites ◽  
Specificity And Sensitivity ◽  
Nematode Eggs ◽  
Commercial Breeding

Birds of the psittaciform order, composed by the Psittacidae and Loridae family have several characteristics making them more frequently kept as companion animals, promoting the increase of breeding sites in Brazil. The present study aimed to analyze the specificity and sensitivity of three different coproparasitological tests, Willis, Hoffman and Direto de feces, through statistical tests: Chi-Square and Kappa. 70 fecal samples of exotic parrots were collected from a commercial breeding site and these were submitted to the three tests, totaling 210 coproparasitological exams. Among the tests performed, 29,5% were positive for nematode eggs, cestodes and oocysts. Coproparasitological exams are inexpensive, have clinical importance, indicating the population of endoparasites and therapeutic treatments.

Clinical significance and the first identification of human parechoviruses in Hungary

2011 ◽  
Vol 152 (25) ◽  
pp. 1007-1012 ◽  
Author(s):  
Gábor Reuter ◽  
Mária Új ◽  
Péter Pankovics ◽  
Tímea Kolozsi ◽  
Ilona Mihály ◽  
...  
Keyword(s):  
Central Europe ◽  
Cell Cultures ◽  
Clinical Importance ◽  
Diagnostic Laboratory ◽  
Fecal Samples ◽  
Reverse Transcription Pcr ◽  
Archived Samples ◽  
Clinical Syndromes ◽  
Old Adult ◽  
Cytopathogenic Effect

Human parechoviruses (HPeV) belonging to the family Picornaviridae are widespread enteric pathogens and are associated with various clinical syndromes in human. At present, 16 HPeV genotypes (HPeV1–16) are known. There is no report on the detection of HPeVs in Central Europe. Aims: The aim of the retrospective study was to detect and characterize HPeVs using molecular methods in cell cultures with “enterovirus-like” cytophatic effect (CPE) archived between 1990 and 2004, in two virology laboratories, in Hungary. Materials and methods: In Laboratory I, fecal samples from children with symptoms of gastroenteritis under the age of 10 years were cultured as a previous routine diagnostic laboratory protocol for “enterovirus”. Cell cultures indicating CPE were archived between 1990 and 2000. In Laboratory II, 2 fecal samples, a liquor and a nasopharyngeal aspirate were re-tested which contained an “enterovirus-like” virus in cell cultures and were positive by HPeV1 neutralization immunosera between 2000 and 2004. Specimens were tested retrospectively for HPeV by reverse transcription–PCR (RT-PCR) method using 5’UTR conserved primers. Specific primers were designed to determine the HPeV structural region (VP0-VP3-VP1). Results: 9 of the 66 archived samples (9.1%) from Laboratory I and all the 4 samples from Laboratory II were found to be HPeV-positive. 10 samples were identified as HPeV1, 2 were HPeV4 and 1 could not be determined. 3 HPeV1 clusters were identified in Laboratory I according to the isolation date originated from years 1990/1991, 1992/1995 and 1998. HPeV1 was detected in clinical syndromes: gastroenteritis (in a 24-years-old adult), recurrent stomatitis aphtosa (in a 42-years-old adult), encephalitis and ataxia cerebellaris acuta in infants and children in Laboratory II. Conclusions: This is the first detection of HPeVs in Central Europe. Detection and genetic characterization of HPeV in available historical samples infected with previously unidentifiable agents with “enterovirus-like” cytopathogenic effect may help to understand the clinical importance and spectrum of the infections and the genetic diversity and evolution of these viruses. Orv. Hetil., 2011, 152, 1007–1012.

Sign in / Sign up

Export Citation Format

Share Document