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R Sakulramrung

Publications and source records attributed to R Sakulramrung.

10 recordsLinked to original sources
PubMed1994

The influence of dissemination of information on the changes of knowledge, attitude and acceptance of hepatitis B vaccination among hospital personnel in Chulalongkorn Hospital.

Lack of knowledge and negative attitudes were the main reasons for refusal, in a vaccination programme against hepatitis B using plasma-derived vaccine which was offered to the hospital personnel of Chulalongkorn University Hospital, Bangkok. Therefore, to ascertain whether an educational intervention among hospital personnel is effective in modifying acceptance of the vaccine, a quasi-experimental design (using a before and after approach) was used to compare the knowledge, attitudes and acceptance rate of hepatitis B vaccination among 1,915 hospital personnel. After dissemination of information, knowledge and attitudes improved significantly, and acceptance rates were increased from 56.9% to 77.7% (P < 0.0000). More specific educational efforts should be started before launching vaccination programmes of this kind in order to increase acceptance.

Diffusion of Innovation↗
PubMed1993

POEMS syndrome: a case with proliferative vasculopathy and a review of cases Thailand.

A Thai male, aged 36 yrs, presented with chronic progressive sensorimotor polyneuropathy and mixed osteosclerotic and lytic lesions at the lumbar vertebrae (L). Generalized hyperpigmentation, bilateral gynecomastia, small testes, hepatomegaly, lymphadenopathy and ascites were observed. Computerized tomography of the lumbosacral spines revealed osteosclerotic changes at L3,4,5 with spiculated bony proliferation at the transverse processes and posterior components of the spines. Histopathological examination of the lesion was compatible with plasmacytoma. Proliferative vasculopathy was demonstrated in plasmacytoma. Serum immunofixation showed an IgM monoclonal gammopathy. Further investigation demonstrated secondary adrenal insufficiency with low level of plasma testosterone. The patient responded well to local radiotherapy and intermittent chemotherapy with melphalan and prednisolone. The histopathological findings of proliferative vasculopathy suggested the important role of capillary leakage as a factor responsible for systemic manifestations in the POEMS syndrome. The reported cases of this syndrome among Thais are summarized.

Adult↗
PubMed1992

Factors influencing acceptance of hepatitis B vaccination by hospital personnel in an area hyperendemic for hepatitis B.

A free-of-charge vaccination program against hepatitis B, in which plasma-derived vaccine was used, was offered to 1,299 hospital personnel of Chulalongkorn University Hospital, Bangkok. The initial acceptance rate for vaccination was 65.7%, with 10.0% nonacceptance and 24.3% undecided. The highest rates of acceptance were among medical students (75.5%), student nurses (68.8%), and newly graduated nurses (63.6%). The lowest rate of acceptance was among physicians (48.2%). Factors strongly associated with the acceptance of vaccination were nature of work, age of personnel (< or = 40 yr), number of years spent in profession (< or = 15 yr), knowledge of hepatitis B, confidence in vaccine efficacy and safety, no history of hepatitis B infection, and contact with blood or blood product. Different types of fear, as well as lack of knowledge, were the main reasons responsible for 46.2% of all refusals. More specific educational efforts about vaccine safety and efficacy may positively influence the acceptance of hepatitis vaccination program among health care personnel.

Adult↗
PubMed1990

Anticardiolipin antibodies in patients with rabies vaccination induced neurological complications and other neurological diseases.

We reported the occurrence of anticardiolipin antibodies (ACA) by using an enzyme-linked immunosorbent assay (ELISA) in sera of patients with neurologic complications from Semple rabies vaccination. There was a correlation between the presence of ACA and the disease severity. Sixteen of 25 patients (64%) with major neurological complications, 2 of 21 patients (10%) with minor complications, and non of the normal vaccinees had an ACA response. In comparison to this, ACA was found in 10/43 (24%) of patients with post-infectious encephalitis (PIE), Guillain-Barré syndrome (GBS) and multiple sclerosis (MS), 5/22 (23%) and 4/31 (13%) of patients with degenerative neurological diseases and central nervous system (CNS) infections, respectively. There was no specific restriction to any particular isotype. Frequency difference of ACA responses was unremarkable in systemic lupus erythematosus (SLE) patients with (3/9) and without (3/10) CNS involvement. It is not conclusive about the pathogenetic role of ACA. This remains to be determined.

Antibodies↗
PubMed1990

Comparison of a recombinant DNA hepatitis B vaccine alone or in combination with hepatitis B immune globulin for the prevention of perinatal acquisition of hepatitis B carriage.

The protective efficacy of a recombinant DNA yeast-derived hepatitis B vaccine was assessed alone or in combination with hepatitis B immune globulin (HBIg) in neonates born to surface antigen (HBsAg)-positive and e antigen (HBeAg)-positive mothers. Neonates received either a 10 micrograms dose of vaccine alone or the same dose of vaccine plus 0.5 ml HBIg within 12 h of birth. All infants subsequently received 10 micrograms of vaccine at 1, 2 and 12 months. Only two of the 58 (3.4%) newborns of HBsAg-positive/HBeAg-positive mothers receiving vaccine alone became chronically infected with hepatitis B virus (HBV) while all infants administered vaccine + HBIg were protected. These results indicate that although the administration of HBIg can increase the protection rate, the use of vaccine without concomitant administration of HBIg according to the above schedule could considerably reduce the risk of perinatal HBV transmission.

Carrier State↗
PubMed1985

Antigenic and immunogenic characteristics of subcellular fractions and whole cells of a rough E. coli 0111 (J5) mutant.

Little information is available on the antigenic and immunogenic properties of an E. coli rough mutant: J5 derived from E. coli 0111:B4, and the relationship of J5 to other cross-reacting antigens of Enterobacteriaceae. Subcellular fractions of J5 and various antigen preparations were tested against antisera to Enterobacterial Common Antigen (ECA-Kunin) and to the Re mutant of S. minnesota (R595). ECA-Kunin was demonstrated in all subcellular fractions of the J5 mutant by means of indirect hemagglutination and by hemagglutination inhibition tests. This common antigen was separable from J5 LPS by ethanol fractionation and by phenol-chloroform-petroleum ether extraction. Treatment with alkali destroyed the hemagglutinating reactivity of ECA-Kunin and revealed the complex nature of J5 surface antigens; an alkalinized 20p30 fraction (containing cell wall components) contained both specific J5 antigen and an antigen which cross-reacted with S. minnesota and S. typhimurium. This antigen was shown by absorption studies to be a new common antigen other than Re LPS or ECA-Kunin. Studies of J5 LPS by ELISA demonstrated that there was a shared cross-reactive immunodeterminant between the glycolipids of J5 and Re. Accordingly, heat-killed J5 preparations were complex vaccines which were able to elicit an antibody response with at least two specificities: ECA-Kunin and the specific J5 antigen.

Antibodies, Bacterial↗
PubMed1985

Cross-reactive immunoprotective antibodies to Escherichia coli O111 rough mutant J5.

The potential immunoprotective role of antiserum to an Escherichia coli J5 mutant derived from E. coli O111:B4 was demonstrated in an experimental mouse model. Overwhelming bacterial inocula masked the effects of cross-reactive immunoprotection due to antiserum to strain J5. Enhanced bacterial clearance was observed in mice receiving antiserum to strain J5 in sublethal infections but not from lethal doses. Incorporation of hemoglobin with the bacterial inocula decreased the 50% lethal dose of challenge organisms, allowing the demonstration of protective activity of antiserum to strain J5 in lethal infection. Pretreatment of mice with antiserum to strain J5 did not protect against lethal doses of endotoxin. The protective factor was demonstrated by exhaustive adsorption experiments to be an antibody specific for strain J5 lipopolysaccharide. The protective activity of antiserum to strain J5 was abolished only after adsorption with strain J5 lipopolysaccharide but not with Salmonella typhimurium mutants with or without enterobacterial common antigen.

Animals↗
PubMed1985

Complement changes in falciparum malaria infection.

Complement profiles were sequentially studied in 183 Thai adults infected with Plasmodium falciparum. On the first day of admission, CH50, C1q, C4 and C3 were low in 65%, 8%, 19% and 62% of cases, respectively. All patients with low C1q or C4 also had low C3 and CH50. Simultaneous reduction of C1q, C4, C3 and CH50 were found in 10 instances. Factor B was not reduced in any of the patients indicating that only the classical pathway is activated during acute falciparum malaria infection. The incidence and the degree of hypocomplementaemia were higher in patients with cerebral, renal and hepatic complications although significant difference was seen only for C3. After 3-4 days of effective anti-malarial treatment, normalization of C1q and C4 was found in almost all instances whereas C3 and CH50 remained low in 27% and 54% of the cases, respectively. Normalization of C3 was achieved at 4 weeks after discharge while low CH50 still persisted. The reasons for the persistently low CH50 remain unknown.

Adult↗