Darawan Thapinta

Safety and immunogenicity of an HIV subtype B and E prime-boost vaccine combination in HIV-negative Thai adults

ALVAC-HIV (vCP1521) and AIDSVAX B/E were evaluated in a phase 1/2 trial of human immunodeficiency virus (HIV)-negative Thai adults. Of 133 volunteers enrolled, 122 completed the trial. There were no serious vaccine-related adverse events, nor were there intercurrent HIV infections. Lymphoproliferative responses to glycoprotein 120 E were induced in 63% of the volunteers, and HIV-specific CD8 cytotoxic T lymphocyte responses were induced in 24%. Antibody responses increased in frequency and magnitude in association with the dose level of AIDSVAX B/E. Binding and neutralizing antibodies to the MN strain were induced in 100% and 98%, respectively, of the volunteers receiving 600 microg of AIDSVAX B/E, and such antibodies to E strains were induced in 96% and 71%, respectively, of these volunteers. This vaccine combination was well tolerated and was immunogenic, meeting milestones for advancement to phase 3 evaluation.

Safety and Immunogenicity of Combinations of Recombinant Subtype E and B Human Immunodeficiency Virus Type 1 Envelope Glycoprotein 120 Vaccines in Healthy Thai Adults

Safety and immunogenicity of 2 recombinant human immunodeficiency virus (HIV) type 1 envelope glycoprotein (gp) 120 vaccines derived from SF2 (subtype B) and CM235 (CRF01_AE, Thai E) were evaluated in 370 Thai adults at low risk of HIV infection. Various doses of CM235 (25, 50, or 100 microg) and SF2 (0, 25, or 50 microg) gp120 were used. Eighty volunteers received placebo. There were no serious adverse events related to vaccination. Binding antibody developed in all vaccine recipients. There was no dose response to CM235 gp120, but a dose response to gp120 SF2 was present. Neutralizing antibodies to subtype E HIV-1 NPO3 and subtype B HIV-1 SF2 developed in 84% and 82% of vaccine recipients, respectively. Lymphoproliferative responses were detected in >95% of vaccine recipients. There was no evidence of antigenic interference in HIV-specific humoral or cellular responses. The gp120 Thai E and SF2 vaccines were safe and immunogenic in combination and could be advanced into phase 3 testing.

Evaluation of behavioral and social issues among Thai HIV vaccine trial volunteers.

Behavioral and social issues were investigated in phase I/II preventive HIV vaccine trial volunteers in Thailand. These included risk behavior, HIV knowledge, distress, and social experiences associated with trial participation. Data were collected at baseline and at 4- and 8-month follow-up visits. Volunteers reported relatively low levels of risk behaviors at baseline and at the follow-up visits. About one fifth reported overtly negative reactions from family or friends. No problems with discrimination in employment, health care, or insurance were reported. Findings add to the evidence suggesting the feasibility of phase I/II prophylactic HIV vaccine trials with low-risk volunteers in Thailand.

Recruiting volunteers for a multisite phase I/II HIV preventive vaccine trial in Thailand.

Summary: Factors believed to be predictive of retention through the recruitment and screening processes for preventive HIV trials were investigated in a large multisite phase I/II HIV vaccine trial in Thailand. Retention through recruitment was equal to or greater than in previous smaller trials with similar populations. The data suggested that recruitment proceeded in a stepwise manner with different influences at each step. Demographic and motivational variables were most important in predicting retention in making and keeping screening appointments. Altruistic or mixed altruistic and nonaltruistic motives were associated with greater retention. Laboratory/medical variables appeared to be the main influence on retention during screening, although some volunteers withdrew for different reasons. The frequent presence of mixed (altruistic and nonaltruistic) motives at initial contact suggests that motivation for trials is more complex than has been previously acknowledged.

Behavioral and social issues among volunteers in a preventive HIV vaccine trial in Thailand.

Behavioral and social issues were investigated in 363 phase I/II preventive HIV-1 vaccine trial volunteers in Thailand. These issues included risk behavior, HIV knowledge, distress, and social consequences of vaccine trial participation. Data were collected at baseline and at 4-, 8-, and 12-month follow-up visits. Volunteers reported relatively low levels of risk behaviors at baseline and at follow-up. Overtly negative reactions from family or friends were reported by 5.9%. No experiences of discrimination in employment, health care, or insurance were reported. Mean levels of distress were low throughout the trial, and HIV-related knowledge was high, although it was common to consider the possibility of HIV transmission through casual contact. Findings add to the evidence that preventive HIV vaccine trials are feasible in Thailand.

Testing a model of depression among Thai adolescents.

PROBLEM This predictive correlational study was designed to test a comprehensive model of depression for Thai adolescents. METHODS This sample included 800 high school students in Chiang Mai, Thailand. Data were collected using self-reported measures of depression, negative automatic thoughts, effective social problem solving, ineffective social problem solving, rumination, parental care, parental overprotection, and negative life events. FINDINGS Structural equation modeling revealed that negative automatic thoughts, effective and ineffective social problem solving mediated the effects of rumination, negative life events, and parental care and overprotection on adolescent depression. CONCLUSION These findings provide new knowledge about identified factors and the mechanisms of their influence on depression among Thai adolescents, which are appropriate for targeting preventive interventions.

Brief Cognitive Behavioral Therapy for Depression among Patients with Alcohol Dependence in Thailand

This study evaluated the short-term efficacy of brief cognitive behavioral therapy for reducing depression among Thai general hospital patients with alcohol dependence. A quasi-experimental design was used with a control group and pretest, posttest, and follow-up assessments. Participants were patients with alcohol dependence and depression who were recruited from district and provincial hospitals in northern Thailand. Eighty (N = 80) eligible participants were purposively selected and enrolled, and then randomly assigned into two groups. One group received three weeks of brief six-session cognitive behavioral therapy as the intervention, and the other group received usual care as their treatment. Data were collected at Week 0 (pretest), Week 3 (posttest), and Week 7 (one month follow-up) and included a nine-item depression scale, with analysis through descriptive statistics and t-test. Findings indicated that the mean depression scores decreased significantly (p < .01) in both the experimental (n = 33) and control groups (n = 27) at the one month follow-up (Week 7). However, only the experimental group showed significant differences in their mean depression scores between pre- and posttest. At Week 7, the experimental group showed significantly lower mean depression scores than the control group (p < .05). In summary, the brief six-session cognitive behavioral therapy intervention yielded promising results and may benefit patients with alcohol dependence and depression who are seen in general hospital settings.

Assessment of inpatient treatment of mentally ill patients in Thailand: Implications for practice

Given the demand for services, psychiatric facilities in Thailand, strive to provide quality care despite limited resources. Patient quality of care initiatives are limited.The purpose of this investigation is to assess the quality of inpatient treatment among a group of acutely mentally ill hospitalized Thai patients. This study presents important data on the standards of care provided to mentally ill patients at one inpatient facility in Thailand.This study is one of the first to look at the inpatient care for Thais with a diagnosis of an acute mental illness. Areas for improvement identified in this research include master treatment planning and documentation of care, patient teaching, and management of aggressive behavior. This study provides an insight into the patient profile and major nursing problems facing Thai nurses.The article also highlights areas of concern such as the high use of ECT and mechanical restraint. How pervasive these deficiencies are in other settings is not known. The findings in this study were shared with the professional staff. It is hope that the nursing staff armed with the results of this study will develop performance improvement activities to improve the quality of care.

Evidence-based nursing-sensitive indicators for patients hospitalized with depression in Thailand.

The aim of this study was to develop and validate nursing-sensitive indicators for patients hospitalized with depression in Thailand. The initial draft, consisting of 12 categories with 37 subcategories, was then evaluated by experts in the US and Thailand. Hospital records were then utilized to evaluate the feasibility and efficacy of the indicators. The finalized instrument consisted of 11 categories with 43 items with a validity of .98 and internal consistency of .88. This is the first set of indicators developed to evaluate nursing-sensitivity for patients hospitalized with a diagnosis of depression in Thailand. Having nursing indicators for depressed patients provides nurses with concrete tools to evaluate their work with depressed patients, allowing these staff to assess their work in a very specific, methodical, and consistent manner. When problems are discovered, both the staff and administration can work to address these issues through training, procedural changes, and departmental shifts.

The effectiveness of cognitive-behavioural therapy on depression in the elderly

Review Question/ Objective The aim of this review is to examine the best available evidence to determine the effectiveness of Cognitive-Behavioural Therapy on treating depression in the elderly. The specific review question is: What is the effectiveness of Cognitive-Behavioural Therapy on treating depression in elderly people? Inclusion Criteria Types of participants This review will consider all studies examining the treatment of older persons aged 60 years or more who had a score of 10 to 29 (mild to moderate level of depression) on the Beck Depression Inventory and were residents in a nursing home setting or in the community. Types of intervention The intervention of interest to this review is Cognitive-Behavioural Therapy, which is based on cognitive theory and designed to consciously identify automatic negative thoughts and their associated problems, and to develop alternative thinking patterns and problem solving, aimed at reducing the level of depression. Types of outcome measures The primary outcome of interest is a change in depressive symptoms. Thus, this will be defined by the relative change in scores from pre-test to post-test as measured on a standard psychological test. The severity of depression is measured by validated scales, for example, Beck Depression Inventory (BDI-IA)2. The test contains 21 items, most of which assess depressive symptoms on a Likert scale of 0-3. People are asked to report on their mood and feelings over the past week, including the day of the test.