Publications by authors named "Chenchit Chayachinda"

Background: Vaginal candidiasis (VC) commonly affects pregnant women. Traditionally, clotrimazole vaginal tablets (CLO) have been the cornerstone of management. However, sertaconazole ovules (SER) offer a novel topical antimycotic option.

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Introduction: Recombinant acellular pertussis (ap) vaccines containing genetically inactivated pertussis toxin (PT) and filamentous hemagglutinin (FHA) with or without tetanus (TT) and diphtheria (DT) vaccines (Td) were found safe and immunogenic in non-pregnant and pregnant women. We report here maternal antibody transfer and safety data in mothers and neonates.

Methods: This is the follow up of a phase 2 trial in 2019 among 400 pregnant women who randomly received one dose of recombinant pertussis-only vaccine containing 1 µg PT and 1 µg FHA (ap1), or Td combined with ap1 (Tdap1), or with 2 µg PT and 5 µg FHA (Tdap2), or with 5 µg PT and 5 µg FHA (TdaP5 Boostagen®, BioNet, Thailand) or chemically-inactivated acellular pertussis comparator (Tdap8 Boostrix™, GSK, Belgium), either in the second or third trimester of gestation.

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This open-labeled non-inferiority trial evaluated immunogenicity and reactogenicity of heterologous and homologous COVID-19 vaccination schedules in pregnant Thai women. 18-45-year-old pregnant women with no history of COVID-19 infection or vaccination and a gestational age of ≥12 weeks were randomized 1:1:1 into three two-dose primary series scheduled 4 weeks apart: BNT162b2-BNT162b2 (Group 1), ChAdOx1-BNT162b2 (Group 2), and CoronaVac-BNT162b2 (Group 3). Serum antibody responses, maternal and cord blood antibody levels at delivery, and adverse events (AEs) following vaccination until delivery were assessed.

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Introduction: Despite a decrease in infections caused by Bordetella pertussis due to COVID-19 pandemic, booster vaccination of pregnant women is still recommended to protect newborns. Highly immunogenic vaccines containing genetically inactivated pertussis toxin (PT) and filamentous hemagglutinin (FHA) may generate comparable anti-PT antibody concentrations, even at lower doses, to chemically inactivated acellular pertussis vaccines (Tdap) shown effective for maternal immunization.

Methods: This phase 2 randomized, observer-blind, active-controlled non-inferiority trial was conducted in healthy Thai pregnant women randomly assigned to receive one dose of low-dose recombinant pertussis-only vaccine containing 1 µg PT and 1 µg FHA (ap1), or tetanus, reduced-dose diphtheria combined with ap1 (Tdap1), or combined with 2 µg PT and 5 µg FHA (Tdap2), or with 5 µg PT and 5 µg FHA (TdaP5, Boostagen®) or comparator containing 8 µg of chemically inactivated pertussis toxoid, 8 µg FHA, and 2.

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At concentrations achieved following systemic administration, the primary effect of imidazoles and triazoles on fungi is inhibition of 14-α-sterol demethylase, a microsomal cytochrome P450 (CYP) enzyme. Imidazoles and triazoles impair the biosynthesis of ergosterol for the cytoplasmic membrane and lead to the accumulation of 14-α-methyl sterols. The synthetic imidazole miconazole is additionally able to increase intracellular reactive oxygen species, at least in part through inhibition of fungal catalase and peroxidase.

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The study aims to evaluate the additive effect of intra-vaginal gentian violet (GV) on a single dose oral 200 mg fluconazole for acute vaginal candidiasis (VC). Women aged ≥18 years who had VC were randomly allocated to receive either fluconazole 200 mg (group 1, FLU,  = 90); or the fluconazole with GV (group 2, FLU + GV,  = 93). Outcome measures were 2-week clinical cure rate, conversion of positive fungal culture, time-to-cure, side effects, satisfaction and symptomatic recurrence within 2 months.

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Purpose: To compare the clinical response, microscopic examination and fungal culture between dequalinium chloride (DQC) and clotrimazole (CT) for treating vaginal candidiasis (VC).

Methods: The double-blind, randomized study was conducted from September 2014 to September 2016 at Siriraj Hospital, Thailand. Eligible participants were Thai women diagnosed with VC by microscopic examination.

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Health education on sexually transmitted infections (STIs), condom use, and partner notification (PN) is required to increase partner evaluation/treatment (PET) rate. To examine this issue, a randomized controlled trial comparing video-based and nurse-led education in women diagnosed with their first STI at the Siriraj Female STI clinic was conducted from March 2015 to March 2017. PN was assessed at two weeks and PET was done at four weeks.

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Objectives: Breakdown of marriage and cohabitation is common in Western countries and is costly for individuals and society. Most research on reasons for breakdown has focused on marriages ending in divorce and/or have used data unrepresentative of the population. We present prevalence estimates of, and differences in, reported reasons for recent breakdown of marriages and cohabitations in Britain.

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This study aimed to investigate the prevalence and the predictors of the adverse reproductive outcomes in patients who had been hospitalised with pelvic inflammatory disease (PID). The retrospective cohort study was conducted by contacting all the patients admitted with PID or tubo-ovarian abscess (TOA) during January 2004 and December 2011. Those who were sexually active and aged 14-40 years were included.

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Aim: To investigate the association of CYP 17 -34T/C polymorphism with insulin resistance (IR) in Thai polycystic ovary syndrome (PCOS).

Methods: A cross-sectional study was performed on 210 Thai women diagnosed with PCOS. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to analyze CYP17 polymorphism at -34T/C.

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Introduction: Episiotomy remains commonly practiced in Thailand. There are limited data on its impacts on sexuality among Asian women during the first postdelivery year.

Aims: The aim was to study dyspareunia and sexual function at 3-12 months after vaginal delivery in Thai primiparous women with episiotomy.

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Background: Anogenital warts (AGWs) are common results of sexually transmitted infection (STI). Human papillomavirus (HPV) types 6 and 11, which are non-oncogenic types, account for 90% of the clinical manifestations. Although the quadrivalent HPV vaccine has been launched, AGW remains prevalent in some countries and shows association with abnormal cervical cytology.

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Introduction: Post-partum, post-sterilization tubo-ovarian abscess is a rare event. Fusobacterium necrophorum subspecies funduliforme, a normal flora found mainly in the oral cavity, appears to be the etiologic organism.

Case Presentation: In this case report, a 25-year-old Thai woman had a post-partum, post-sterilization tubo-ovarian abscess caused by the strictly anaerobic bacterium, Fusobacterium necrophorum subspecies funduliforme.

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Objective: To report characteristics of the patients with septic abortion between 2006 and 2010.

Material And Method: The present retrospective study was done by reviewing the medical records of the women who were admitted to Siriraj Hospital between 2006 and 2010 with the diagnosis of septic abortion.

Results: Eighty-three women were admitted to Siriraj Hospital and diagnosed with septic abortion.

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Objective: To evaluate the effects of different suture materials and techniques on soft tissue in relation to defined tensions and time points.

Materials And Methods: Two bovine intestine samples, 4 × 4 cm size and ~3 mm thickness, were adapted with interrupted and continuous techniques using three types of suture materials: Vicryl (polyglactin 910), PDS II (polydioxanone), and V-Loc 180 (knotless, barbed polyglyconate). Four stitches or loops 9 mm apart with three knots, and 10 mm end length were performed by one gynecologist.

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Background: Cervical cancer is one of the most common AIDS-related malignancies in Thailand. To prevent cervical cancer, The US Public Health Service and The Infectious Disease Society of America have recommended that all HIV-infected women should obtain 2 Pap smears 6 months apart after the initial HIV diagnosis and, if results of both are normal, should undergo annual cytological screening. However, there has been no evidence in supporting whether this guideline is appropriate in all settings - especially in areas where HIV-infected women are living in resource-constrained condition.

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Objective: To survey prevalence, knowledge, attitude, and factors affecting the behavior of nutritional supplement consumption in health-conscious pre-/post-menopausal Thai women.

Material And Method: A survey was conducted in 327 women, aged 40-67 years, who were new participants in the health promotion education program of Siriraj Menopause Clinic, Gynecologic Endocrinology Unit, Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University, between January and July 2008. The participants completed a self-administering questionnaire inquiring their demographic data, attitude, knowledge, and behavior of supplement consumption.

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Objective: To investigate prevalence of premenstrual syndrome (PMS) and its associated factors among Thai nurses.

Methods: The study was conducted in 423 nurses in a university hospital during October 2005 to March 2006. Prevalence of PMS was determined using a validated Thai version of Premenstrual Symptoms Screening Tool (PSST).

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