Faculty Opinions recommendation of Evidence for karyogamy and exchange of genetic material in the binucleate intestinal parasite Giardia intestinalis.

Giardia lamblia (also referred to as Giardia intestinalis and Giardia duodenalis) is the most common intestinal parasite in the world, affecting approximately 200 million people annually. Symptoms of Giardia include foul-smelling diarrhea, abdominal cramping, bloating, gas, and nausea. Although usually self-limiting, Giardia can progress to dehydration, malnutrition, and failure to thrive, especially in immunocompromised individuals. Early diagnosis and treatment is imperative to prevent and control infection of Giardia. Infectious Disease Society of America diagnostic guidelines recommend obtaining stool studies to diagnose Giardia; when stool studies are negative but suspicion remains high, duodenal aspirate microscopy is the only alternative diagnostic strategy suggested. We report a patient diagnosed incidentally with Giardia from a duodenal biopsy specimen obtained during a workup for a gastrointestinal bleed. There are limited cases of Giardia diagnosed by duodenal biopsy reported in the literature. We review studies that suggest duodenal biopsy can be a very sensitive strategy for the diagnosis of Giardia.

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Prevalence of intestinal parasite infection in dogs from selected rural areas of central and southern Poland

Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego ◽

10.5604/01.3001.0013.5321 ◽

2017 ◽

Vol 13 (1) ◽

pp. 61-69

Author(s):

Justyna Bartosik ◽

Karolina Dziwirek ◽

Jacek Łojek ◽

Justyna Kaczyk ◽

Paweł Górski

Keyword(s):

Rural Areas ◽

Intestinal Parasite ◽

Toxocara Canis ◽

Parasite Infection ◽

Giardia Intestinalis ◽

Intestinal Parasite Infection ◽

Faecal Samples ◽

The Family ◽

Trichuris Vulpis ◽

Toxascaris Leonina

The main aim of the study was to compare parasites of dogs living in rural areas of selected counties of the Masovian and Małopolska Voivodeships. Furthermore, the prevalence of intestinal parasite infection was determined in relation to selected factors (sex and season). The research was carried out from October 2015 to May 2016. A total of 207 faecal samples were analysed by the flotation method and by direct smears. Infection by protozoa and nematodes was observed. The mean prevalence was 17.8% for Giardia intestinalis, 0.9% for coccidia of the genus Cystoisospora, 7.2% for Toxocara canis, 2.4% for Toxascaris leonina, 20.2% for Trichuris vulpis and 22.2% for nematodes of the family Ancylostomatidae. Infection with particular parasites was more common in males than in females. The occurrence of Giardia intestinalis and hookworms was statistically significantly correlated with the sex of the host and the season.

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DNA Fingerprinting of the Human Intestinal Parasite Giardia intestinalis with Hypervariable Minisatellite Sequences

Experientia Supplementum - DNA Fingerprinting: Approaches and Applications ◽

10.1007/978-3-0348-7312-3_5 ◽

1991 ◽

pp. 70-84 ◽

Cited By ~ 5

Author(s):

P. Upcroft

Keyword(s):

Dna Fingerprinting ◽

Intestinal Parasite ◽

Giardia Intestinalis

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OCCURRENCE OF Blastocystis spp. IN UBERABA, MINAS GERAIS, BRAZIL

Revista do Instituto de Medicina Tropical de São Paulo ◽

10.1590/s0036-46652015000300005 ◽

2015 ◽

Vol 57 (3) ◽

pp. 211-214 ◽

Cited By ~ 11

Author(s):

Marlene CABRINE-SANTOS ◽

Eduardo do Nascimento CINTRA ◽

Rafaela Andrade do CARMO ◽

Gabriel Antônio Nogueira NASCENTES ◽

André Luiz PEDROSA ◽

...

Keyword(s):

Public Health ◽

Entamoeba Histolytica ◽

Ascaris Lumbricoides ◽

Intestinal Parasite ◽

Intestinal Parasites ◽

Giardia Intestinalis ◽

High Agreement ◽

Direct Microscopy ◽

The World ◽

Blastocystis Spp

Intestinal parasites are a problem for public health all over the world. The infection with Blastocystis, a protozoan of controversial pathogenicity, is one of the most common among them all. In this study, the occurrence of intestinal parasites, with emphasis on Blastocystis, in patients at the Universidade Federal do Triângulo Mineiro was investigated in Uberaba (MG) through microscopy of direct smears and fecal concentrates using Ritchie’s method. Feces of 1,323 patients were examined from April 2011 to May 2012. In 28.7% of them at least one intestinal parasite was identified, and the most frequent organisms were Blastocystis spp. (17.8%) and Giardia intestinalis (7.4%). The occurrence of parasitism was higher in children aged 6 -10 years old, and the infection with Blastocystis spp. was higher above the age of six (p < 0.001). The exclusive presence of G. intestinalis and of Blastocystis spp. was observed in 5.4% and 12.2% of the patients, respectively. Regarding patients with diarrheic feces, 8% revealed unique parasitism of Blastocystis spp. Other intestinal parasites observed in children were Ascaris lumbricoides (0.3%) and Entamoeba histolytica/dispar/moshkovskii (1.4%). The Ritchie’s method was more sensitive (92.8%) when compared to direct microscopy (89.8%), with high agreement between them (97.7%, kappa = 0.92). In conclusion, the occurrence of Blastocystis spp. in Uberaba is high and the presence of diarrheic feces with exclusive presence of the parasite of Blastocystis spp. was observed.

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