PubMed Health⌕ Search

Biomedical subjects

S Kurathong

Publications and source records attributed to S Kurathong.

At least 37 records · Page 2Linked to original sources
PubMed1987

Opisthorchis viverrini infection in rural and urban communities in northeast Thailand.

The prevalence and intensity of liver-fluke (Opisthorchis viverrini) infection were investigated among 559 patients who were born in, and had lived all their lives in, either the rural or urban northeastern Thailand. 344 (79.4%) of 433 rural dwellers were infected compared with only 69 (54.8%) of 126 urban dwellers (P less than 0.005). The intensity of infection, and the reported level of consumption of koi-pla, a favourite dish of local inhabitants prepared from uncooked freshwater fish which often contains viable metacercariae, were greater among rural dwellers than their urban counterparts (P less than 0.05 to P less than 0.005). Infection due to O. viverrini appears to be mainly a rural problem strongly associated with the habit and frequency of eating koi-pla.

Adolescent↗
PubMed1987

A new solid phase passive hemagglutination test for IgM antibody to hepatitis B core antigen.

There is a need for a simple, sensitive, specific, and inexpensive test for immunoglobulin M antibody to hepatitis B core antigen (anti-HBc IgM). A solid phase passive hemagglutination test (SP-PHA) was developed for this purpose and compared with the enzyme-linked immunosorbent assay (ELISA) test. Hepatitis B core antigen (HBcAg) used in PHA and SP-PHA was synthesized in Escherichia coli. Human IgM was captured to a microtiter plate coated with anti-human IgM, and the presence of anti-HBc IgM was demonstrated by the adherence of HBcAg-sensitized erythrocytes to the bottom of a U-shaped microtiter plate. ELISA and SP-PHA were made at 1:100 and 1:1,000 serum dilution, respectively. Both were positive in 100% of 36 cases of acute hepatitis B, 68.18% of 22 cases of chronic hepatitis B, and 20% of 75 healthy carriers of hepatitis B surface antigen (HBsAg) but none in 65 anti-HBc-positive blood donors that had negative results for HBsAg. Results of both tests were identical but were false positive because rheumatoid factor was found only in ELISA. End-point titration by SP-PHA and PHA was also found useful for the differentiation of acute hepatitis B from chronic hepatitis B and HBsAg carriers.

Enzyme-Linked Immunosorbent Assay↗
PubMed1986

Detection of antibodies in sera from patients with Opisthorchiasis.

The indirect immunofluorescent antibody technique (IFA) was used for detection of antibodies in sera of patients with Opisthorchiasis. Antibodies to fluke worm and egg antigens were detected in 166 of 205 (81%) patients. The test showed that only the IgG class of antibodies reacting exclusively with integumental wall of the worm (AW) were positive in 46.8% (96/205), reacting only with the wall of intact eggs in 11 out of 205 (5.4%) and antibodies to both fluke and their egg antigens were present in 28.8% (59/205). In addition, 5.4% (11/205) of patients' sera were positive for autoantibodies producing a speckled antinuclear antibodies (ANA) pattern. The sera positive for only AW contained detectable autoantibodies to other cell antigens including: anti-smooth muscle antibodies of 9.4% (9/96), antimitochondrial antibodies of 3.1% (3/96), anti-liver/kidney microsomes of 1% (1/96) and anti-parietal cell antibodies of 1% (1/96). Autoantibodies were undetectable in sera from normal subjects. Among the ANA positive sera, 55% (6/11) exhibited antibodies against an extractable nuclear antigen (ENA) by a tanned red cell hemagglutination assay. This finding may suggest that the autoantibody response was due to the cross reaction between worm antigen and self antigen or it may be the result of polyclonal activation of B lymphocytes in these patients.

Adolescent↗
PubMed1986

Clinical field trial of praziquantel in opisthorchiasis in Nong Rangya Village, Khon Kaen Province, Thailand.

A clinical field trial of praziquantel was carried out in Nong Ranya Village, Amphoe Ban Phai, Khon Kaen Province, with a population of 309 individuals, and 94% prevalence rate of opisthorchiasis. A mass treatment was carried out using a single dose of praziquantel at 40 mg per kg body weight. Acceptance for treatment was 91%. Follow-up stool examinations performed on days 14 and 60 gave prevalence rates of 20.5% and 22.2% respectively. Side effects including dizziness, headache, abdominal discomfort, nausea, vomiting, diarrhoea, lassitude, arthralgia, sleepiness, cramps and hot sensation were the complaints from 80% of adults and 40% of children. All of these were mild and transient except in one adult female who had severe diarrhoea and required intravenous fluid infusion.

Adolescent↗
PubMed1985

Opisthorchis viverrini infection and cholangiocarcinoma. A prospective, case-controlled study.

During a prospective, 24-mo case-controlled study, 551 patients from northeastern Thailand were independently evaluated for Opisthorchis viverrini infection, hepatobiliary tract disease, and hepatic carcinoma to determine whether there was any association between hepatic carcinoma and O. viverrini infection. Stool examination by the formalin-ether concentration method revealed O. viverrini ova in 389 (70.6%) patients. Of the 551 patients, 72 (13.1%) had both clinical and laboratory evidence of hepatobiliary tract disease, chronic liver disease, or hepatic carcinoma, alone or in combination. Of these 72 patients, 28 (38.9%) had a liver biopsy that revealed cholangiocarcinoma in 7 patients with O. viverrini ova in their stools, and in 4 patients without. In another patient with ova in the stool combined hepatocellular carcinoma and cholangiocarcinoma was found. In the 4 patients with cholangiocarcinoma who had no O. viverrini ova in their stools, ova were detected in the bile fluid aspirated from the intrahepatic biliary tree during exploratory laparotomy. An additional patient with clinically suspected cholangiocarcinoma and O. viverrini ova in stool had a left supraclavicular lymph node biopsy specimen taken that revealed metastatic adenocarcinoma; this adenocarcinoma was interpreted as compatible with cholangiocarcinoma. Cholangiocarcinoma, therefore, was found only in patients with O. viverrini ova in stool or in the intrahepatic biliary tree. Statistical analysis revealed that patients with known O. viverrini infection had a higher incidence of cholangiocarcinoma than did patients without such infection (X2 test, p less than 0.05).

Adenoma, Bile Duct↗
PubMed1985

Spontaneous Vibrio vulnificus peritonitis and primary sepsis in two patients with alcoholic cirrhosis.

Two patients with alcoholic cirrhosis were seen on two separate occasions for fever, swollen legs, petechial hemorrhage, purpura, and cutaneous bullae. One patient ate oysters 2 days before the onset of illness. Vibrio vulnificus, a lactose-positive halophilic vibrio, was isolated from the ascitic and cutaneous fluid in both cases, and from the blood in one of the two cases. Both isolated strains were sensitive to the antibiotics given to the patients from the beginning; however, both patients died, one from septicemic shock and the other from massive esophageal variceal hemorrhage. Autopsies in both patients revealed alcoholic cirrhosis, hemorrhagic necrosis of the terminal ileum, intraalveolar hemorrhage, petechial hemorrhage in the peritoneum, and nonspecific acute inflammation of the dermis with vasculitis. Physicians should consider V. vulnificus in the differential diagnosis of cirrhotic patients with sepsis, primary skin lesions, and spontaneous bacterial peritonitis with or without history of recent oyster ingestion.

Adult↗
PubMed1985

Enzyme-linked immunosorbent assay for detection of Opisthorchis viverrini infection.

Antibodies to O. viverrini in the sera of people from endemic and non-endemic areas were investigated using indirect ELISA technique. For the patients from the endemic area, 92.8% who passed eggs in the stool were found to be positive for O. viverrini antibody. In addition, 46.5% of the people who did not pass eggs in the stool were also found to have low titer of O. viverrini antibody. On the other hand only 2.4% of the people from the non-endemic area with other intestinal parasite infections were found to have O. viverrini antibody in their sera. It was concluded that positive reaction of O. viverrini antibody is not cause by cross-reaction with other parasites but low liter of antibody is probably due to low-level or past infection. There is a positive correlation between the titer of O. viverrini antibody and intensity of infection as indicated by number of eggs excreted per milligram of feces. Patients with a few O. viverrini eggs in feces, but biopsy-proved-cholangiocarcinoma had very high titer of antibody.

Adolescent↗
PubMed1984

Consistency of fecal egg output in patients with Opisthochiasis viverrini.

Counts of Opisthorchis eggs in two samples of feces arbitrarily taken 0-21 days apart from each of 209 patients from northeastern Thailand were carried out by Stoll's dilution technique. Based on the number of eggs/mg feces, each patient was classified as uninfected, lightly infected (less than 1 egg/mg), moderately infected (1-10/mg), heavily infected (greater than 10-50/mg), or very heavily infected (greater than 50/mg). The intensity of infection for each of the 209 individuals as shown by first and second counts was compared. Of the 209 individuals, 150 (71.8%) remained within the same egg excretion category, with all but five (2.4%) of the remainder being in an adjacent category. Statistical analysis showed no effect of variation in interval between stool counts on the accuracy or consistency of replicate counts.

Feces↗
PubMed1984

Relationship between prevalence and intensity of Opisthorchis viverrini infection, and clinical symptoms and signs in a rural community in north-east Thailand.

In a large village in north-east Thailand, the overall prevalence of Opisthorchis viverrini infection (based on Stoll's quantitative egg count) was 89.5% in a total population of 1651 individuals. The prevalence was 32% in children under 5 years, 90% in those aged 5-9 years, and averaged 95.6% in age groups above 10 years. The mean faecal egg output (indicative of intensity of infection) was highest in the 40-49-year age group and remained relatively constant through older ages. In all age groups the prevalence and intensity of infection in both men and women were similar.A history of eating raw freshwater fish occurred more frequently in infected persons than in those uninfected. The following symptoms occurred significantly more frequently in groups with higher intensities of infection: weakness, flatulence or dyspepsia, and abdominal pain in the right upper quadrant. Nevertheless, infected persons did not report a reduced ability to work. Anorexia, nausea, vomiting, and diarrhoea were only weakly correlated with the intensity of infection. A palpable liver occurred more frequently in the infected groups and was correlated with intensity of infection. Icteric conjunctivae were observed in 2.2% of infected persons but not in the uninfected. Some 5-10% of the population had symptoms that were attributable to opisthorchiasis.

Adolescent↗
PubMed1983

Single-day drug treatment of amebic liver abscess.

This double-blind trial was initiated to test, in a controlled study, the value of single-day drug treatment of amebic liver abscess. Patients were treated with 2 g either of ornidazole or tinidazole, two newly developed 5-nitroimidazole derivatives, given in two equal doses during the course of 1 day. A success rate of over 94% in the 72 patients from both treatment groups who were followed up for 6 months demonstrates the efficacy of the single-day drug treatment.

Double-Blind Method↗
PubMed1982

Morbidity in relation to intensity of infection in Opisthorchiasis viverrini: study of a community in Khon Kaen, Thailand.

A study of the prevalence and intensity of opisthorchiasis viverrini in relation to morbidity as determined by standard medical examination was carried out in Nong Ranya, a small village containing 309 people in northeastern Thailand. Opisthorchis viverrini infection as determined by Stoll's quantitative egg count method had an overall prevalence of 94% and reached 100% prevalence in most age groups above the age of 10 years. With respect to intensity, 6% were uninfected, 26% had light (less than or equal to 1 eggs per mg [epmg] of feces), 37% moderate (greater than 1-10 epmg), 25% heavy (greater than 10-50 epmg), and 5% very heavy (greater than 50 epmg) infections. Peak intensity in both males and females occurred at age 40 and above. A history of eating "koipla" (a sauce consisting of ground up raw fish), of feeling weak, and of having right upper quadrant abdominal pains occurred most frequently in the infected groups and was correlated with intensity of infection. Regardless of intensity of infection, only a small proportion of the population were unable to carry out their routine activities. Anorexia, nausea or vomiting bore little relationship to the presence or intensity of infection. Hepatomegaly at the mid-clavicular line occurred in 14% of the population, mainly in the more heavily infected groups. Neither jaundice nor splenomegaly was observed in the population.

Adolescent↗
PubMed1982

Alpha chain disease in the Thai man.

A 61-year-old Thai man presented with a history of chronic diarrhoea of 1-2 years duration. Stool examination revealed a heavy parasitic infection. Several anthelminthics were given without benefit, despite disappearance of the intestinal parasites. Serum protein studies revealed abnormal alpha heavy chain. Two courses of cyclophosphamide, vincristine and prednisolone were followed by a brief remission in his symptoms. A 21 day course of tetracycline was then given, resulting in an improvement in his condition. He is still symptom free nine months after confirmation of the diagnosis, without any further treatment. Serum protein studies should be included in laboratory investigations of a patient with chronic diarrhoea.

Cyclophosphamide↗