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Query: UMLS:C0017536 (giardiasis)
 1,714 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In 15 months of the years 1979-1980, 158 patients with giardiasis and 69 patients with intestinal amebiasis were diagnosed and treated in the outpatient department of the Swiss Tropical Institute. Repeated examination of merthiolate-iodine-formol-fixed stools was the method of choice for detecting intestinal protozoa. Parasitological investigation of duodenal fluid (Enterotest) was less effective. Fewer than 30% of the cases were symptomatic, usually mentioning diarrhea (73-85%) or abdominal discomfort (20-44%). Treatment was by ornidazole single dose (2 g in adults; 40 mg/kg in children) for asymptomatic cases and a five-day treatment schedule (2 X 500 mg/day in adults, 20 mg/day in children) for symptomatic cases. In amebiasis a luminal amebicide (diloxanide furoate) was prescribed in all instances after the first stool examination. Parasitological cure rates were excellent (95%) in all cases of giardiasis but only 59 and 65% respectively in cases of asymptomatic and symptomatic amebiasis. Drug tolerance was excellent. Ornidazole is the drug of choice for all forms of giardiasis, even in a single dose. As a luminal amebicide, however, its efficacy is not superior to other nitroimidazole derivatives.
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PMID:[Clinical and therapeutic study of a group of 217 patients with intestinal giardiasis and amebiasis]. 627 72

A high index of suspicion and careful application of diagnostic methods are essential for accurate diagnosis of parasitic bowel diseases. The varied clinical spectrum of giardiasis, amebiasis, and strongyloidiasis emphasizes the need to consider these pathogens when patients present with gastrointestinal complaints. Giardiasis should be suspected in patients, especially returned travelers, with unexplained increase in stool frequency, particularly with bloating, flatulence, or vague systemic symptoms. Amebiasis must be considered in the differential diagnosis of any patient who presents with persistent diarrhea or signs of inflammatory bowel disease. Unexplained diarrheal illnesses associated with upper abdominal symptoms and eosinophilia should raise suspicion of the presence of strongyloidiasis. These findings in a patient with a compromised immune system or in a candidate for immunosuppressive therapy should prompt a thorough investigation to rule out this parasite, since disseminated strongyloidiasis often is fatal.
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PMID:Parasitic bowel disease: three pathogens important in primary care. 628 Jan 60

Intestinal protozoal infestation and antibodies against Entamoeba histolytica were determined in 614 employees of the Hamburg sewage works and compared with control groups without occupational sewage contact. The protozoal infection rate was significantly higher in sewer-men than in control persons. There was a positive correlation between the duration of exposure to sewage and the frequency of intestinal protozoal infestation. The risk of infection by sewage was higher than by a short journey to tropical or subtropical countries. Immunodiagnostic results showed no significant differences of invasive activity of E. histolytica between both investigated groups. On the basis of parasitological results classification of amoebiasis and giardiasis as occupational diseases in exposed persons is recommended.
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PMID:[Intestinal protozoal infestation in persons with occupational sewage contact]. 629 94

Giardia lamblia is discussed as the most important parasitic cause of travellers' diarrhoea. The parasitology of this flagellate protozoan is discussed with respect to route of infection, threshold infecting dose, and incubation period. The geographic distribution of giardiasis is widespread, being common in tropical and sub-tropical regions and endemic at a low level in European and North American countries. The predisposing factors are detailed together with clinical manifestations, pathogenesis and diagnosis. Effective therapy may be quinacrine t.i.d. for 5-10 days, metronidazole 200 mg t.i.d. for 14 days or 2 g once daily over 3 days, or a single dose of 1.5 g of tinidazole. Although Entamoeba histolytica is distributed world-wide, it rarely causes travellers' diarrhoea. However, the clinical features, diagnosis and treatment of amoebiasis-related travellers' diarrhoea are detailed.
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PMID:Parasites and travellers' diarrhoea. 631 89

To determine the prevalence of infections with Entamoeba histolytica and Giardia lamblia in Bangladesh, we screened stool specimens from patients with diarrhoea attending urban (N = 2,246) and a rural (N = 2,791) hospital and a group of healthy urban residents (N = 440). Sera from 200 healthy villagers were also examined for antibody to E. histolytica using the immunofluorescent antibody test. The prevalence of E. histolytica cysts or trophozoites in all groups assessed by examination of a single stool specimen ranged from 0% among infants (less than 1 year) to 34% among healthy adults 30 to 44 years old. G. lamblia was uncommon in infants and found most frequently in urban hospital patients aged five to nine (21%). 12% of one- to two-year-old children had serum antibody to E. histolytica at a titre of 1:40. By age 14 years, 80% of those tested were seropositive, and this prevalence declined thereafter with increasing age. Amoebiasis and giardiasis occur frequently in Bangladeshi populations and the morbidity and mortality associated with these infections need to be assessed.
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PMID:Amoebiasis and giardiasis in Bangladesh: parasitological and serological studies. 631 13

Tinidazole is a 5-nitroimidazole with selective activity against anaerobic bacteria and protozoa. It is bactericidal at low concentrations and its spectrum covers most anaerobic bacteria and some capnophilic microorganisms. Anaerobic bacteria known to be resistant to tinidazole include anaerobic streptococci, actinomyces and propionibacteria. Tinidazole is one of the most active antibacterial agents against Bacteroides fragilis which is one of the most resistant species of anaerobic bacteria. Only a few strains have been reported to be resistant. Tinidazole has been shown to be efficacious in protozoal infections such as trichomonal vaginitis, amoebiasis and giardiasis. Clinical studies have also shown that tinidazole is efficacious in the treatment of anaerobic infections including respiratory tract infections, intra-abdominal sepsis and obstetrical and gynecological infections. Since tinidazole has no activity against aerobic bacteria, it must be combined with other antibacterial agents in the treatment of mixed infections involving aerobic and anaerobic bacteria. Tinidazole has also been used successfully alone or in combination with other antimicrobial agents for prophylaxis in patients undergoing elective colonic and abdominal surgery, emergency appendectomy and gynecological surgery.
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PMID:Tinidazole--microbiology, pharmacology and efficacy in anaerobic infections. 634 Dec 53

Hepatitis viruses, enteric pathogens, and anorectal infections may commonly be transmitted by various sexual practices. Because of their larger numbers of sexual partners and sexual practices such as anilingus and anal intercourse, homosexual men are at particularly high risk of acquiring hepatitis B, giardiasis, amebiasis, shigellosis, campylobacteriosis, and anorectal infections with Neisseria gonorrhoeae, Chlamydia trachomatis, Treponema pallidum, herpes simplex virus, and human papilloma viruses. The evidence for sexual transmission of these infections as well as their diagnosis and treatment are discussed.
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PMID:Sexually transmitted viral hepatitis and enteric pathogens. 642 96

A rural development project carried out in Southern Zimbabwe for 5 years was aimed at improving nutrition, combatting diseases, educating villagers about proper hygiene, improving water quality, and assessing the development and nutritional status of children under 5. The community investigated consisted of 10,000 people or 1,439 families with an average of 7 persons per family. The main staple of their diet was maize, and malnutrition was prevalent. Water holes infested with bilharzia were the source of drinking water for both man and animal. The project succeeded in vaccinating 90% of preschool children against whooping cough, diphtheria, tetanus, polio, measles, and tuberculosis. A control district was chosen to compare the developmental data obtained by the Cole Slide Rule Calculator of 229 children under 5 with those of 242 children in the project. Malnutrition was studied in 200 children hospitalized in the children's ward of a district hospital, 1/3 of whom were less than 1 year old. Gastroenteritis, giardiasis and amebiasis were prevalent among them (37%), as were upper respiratory infections (27%), pneumonia (12%), and skin infections (7%). Nonspecific gastroenteritis was found in 86% of children under 2. Most over 2 were severely undernourished. A nutritional rehabilitation village called Hutano Village was established in 1982 to function as a nutritional center, staffed by a full-time health worker and an assistant. In the 1st 9 months of its existence, 114 children were taken in, and the mothers received instruction in vegetable gardening, raising chickens and rabbits, hygiene, and family planning. The average attendance runs to 25 children and 15 to 17 mothers. In spite of successful medical intervention in malnutrition cases, the relapse of children into an undernourished state remains a difficult issue, whose cause lies in inadequate water supply, poor soil, lack of resources, and low family socio-economic status.
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PMID:[Improved health in Zimbabwe's rural areas as a result of the rural development project]. 648 96

Unsporulated Isospora belli oocysts were detected in the stool specimens of three homosexual men. The oocysts were ellipsoidal measuring 23-33 X 12-15 micron. It is acid fast with modified cold kinyoun stain (MCK) and reveals orange fluorescence with the Truant's stain. Sheather's sucrose flotation method is effective in concentrating Isospora oocyst as with other coccidial oocysts. One specimen showed many Charcot-Leyden crystals. All three patients responded to treatment. Isosporiosis is rare in this country and is endemic in the tropics and subtropics. Although one case acquired the infection after returning from an endemic area, the other two cases had no travel history. This raised the suspicion that this, like other parasitic infections (amebiasis, giardiasis, cryptosporidiosis) may be sexually transmitted. Such exotic parasitic infections in homosexual men during the outbreak of the acquired immunodeficiency syndrome adds another unusual infectious agent to the differential diagnosis of diarrheal disease in this high risk group of population.
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PMID:Isospora belli diarrheal infection in homosexual men. 654 6

Metronidazole, a nitroimidazole derivative, is a unique antimicrobial agent that is active against both bacterial and parasitic organisms, although only the anaerobic members of these groups are susceptible. It has been used for the treatment of trichomoniasis for about 20 years and is also effective against amebiasis and giardiasis. More recently, metronidazole has emerged as a principal agent for the treatment of anaerobic bacterial infections. It is highly effective against all species of anaerobes except certain non-spore-forming gram-positive bacilli and cocci and is the only agent rapidly bactericidal against the Bacteroides fragilis group. Clinical studies have proved its efficacy in prophylaxis for elective colorectal surgical procedures and in the treatment of deep abdominal sepsis (usually in combination with another agent, such as an aminoglycoside). Metronidazole is the treatment of choice for nonspecific vaginitis that seems to be a mixed infection due to anaerobes and Gardnerella vaginalis. Adequate concentrations in the blood are produced after both oral and intravenous administration, and the side effects are infrequent and minimal.
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PMID:Metronidazole. 660 Aug 4


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