Biomedical subjects

Prisana Kullavanijaya

Publications and source records attributed to Prisana Kullavanijaya.

3 recordsLinked to original sources

PubMed2005

Photoprotection.

UNLABELLED: Many agents affect the transmission of ultraviolet light to human skin. These include naturally occurring photoprotective agents (ozone, pollutants, clouds, and fog), naturally occurring biologic agents (epidermal chromophores), physical photoprotective agents (clothing, hats, make-ups, sunglasses, and window glass), and ultraviolet light filters (sunscreen ingredients and sunless tanning agents). In addition, there are agents that can modulate the effects of ultraviolet light on the skin (antioxidants and others). All of the above are reviewed in this article. LEARNING OBJECTIVE: At the conclusion of this learning activity, participants should be able to provide an overview of all aspects of photoprotection.

4-Aminobenzoic Acid↗

PubMed2004

Topical calcipotriene and narrowband ultraviolet B in the treatment of vitiligo.

BACKGROUND: Treatment of vitiligo, despite significant advances made in the past few years, remains to be a challenge. Narrowband ultraviolet (NB-UVB) has emerged as an important therapeutic option for this condition. OBJECTIVE: To evaluate whether the combination of calcipotriene ointment and NB-UVB could enhance the efficacy of NB-UVB alone. METHODS: An open, bilateral comparison study was performed in 20 patients with symmetrical vitiligo between August 2001 and October 2002. All patients received NB-UVB three times per week. Calcipotriene ointment was applied to lesions on the left side of the body. Response was graded visually as significant (66-100% repigmentation), moderate (26-65%), mild (10-25%), and minimal (< 10%). RESULTS: Seventeen patients (six females, 11 males) completed the study. Eight patients (8/17=47%) had significant repigmentation after 67-180 treatments, six patients (35%), one patient (6%), and two patients (12%) had moderate, mild, and minimal repigmentation after 40-160, 57, and 14-21 treatments, respectively. Nine of the 17 patients had an appreciably better improvement on the NB-UVB and calcipotriene side by 29-114 treatments. In six of these patients, differences were still observed at the end of the study period. No side effects were noted. CONCLUSION: Combination therapy of topical calcipotriene and NB-UVB is a therapeutic option that could be considered in the management of patients with vitiligo.

Administration, Cutaneous↗

PubMed2002

Prevalence of thyroid antibodies in Thai patients with chronic idiopathic urticaria.

One hundred Thai patients with chronic idiopathic urticaria (CIU) were studied to determine the prevalence of thyroid antibodies in comparison to 100 age- and sex-matched healthy volunteers. It was found that 21 patients (21%) with CIU were positive for thyroid antibodies. Among normal volunteers, only nine cases (9%) had elevated titers of thyroid antibodies. The frequency of thyroid antibodies in the chronic urticaria group was significantly more common than the control group (chi-square = 4.75, p=0.03). Among 21 patients with CIU who were positive for thyroid antibodies, 9 cases were negative for thyroid antibodies when repeating the tests after 3 months. Only 12 patients still had persistent elevation of antibodies after 3 months and thyroid function test was performed in these 12 patients. It was found that 9 cases had autoimmune thyroiditis with euthyroidism. One case had subclinical hyperthyroidism. One case had autoimmune hyperthyroidism, One case had subclinical hypothyroidism.

Adolescent↗