Browsing by Author "Songkhla Rajabhat University"

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    Estimated dietary sodium intake in Thailand: A nationwide population survey with 24-hour urine collections
    (2021-04-01) Worawon Chailimpamontree; Surasak Kantachuvesiri; Wichai Aekplakorn; Raweewan Lappichetpaiboon; Nintita Sripaiboonkij Thokanit; Prin Vathesatogkit; Ananthaya Kunjang; Natthida Boonyagarn; Penmat Sukhonthachit; Narinphop Chuaykarn; Patthrapon Sonkhammee; Payong Khunsaard; Phassakon Nuntapanich; Pattaraporn Charoenbut; Comsun Thongchai; Apinya Uttarachai; Wisrut Kwankhoom; Fuangfah Rattanakanahutanon; Krich Ruangchai; Nadchar Yanti; Natnapa Sasang; Sushera Bunluesin; Renu Garg; Ramathibodi Hospital; Songkhla Rajabhat University; Phranakhon Si Ayutthaya Rajabhat University; Ubon Ratchathani Rajabhat University; Rajamangala University of Technology Srivijaya; World Health Organization, Thailand; Valaya Alongkorn Rajabhat University; Faculty of Medicine Ramathibodi Hospital, Mahidol University; Thailand Ministry of Public Health; Fort Nawamintharachini Hospital; Chandrubeksa hospital; Nephrology Society of Thailand; Chiang Rai College
    Thailand has committed to reducing population sodium intake by 30% by 2025. However, reliable nationally representative data are unavailable for monitoring progress toward the goal. We estimated dietary sodium consumption using 24-hour urinary analyses in a nationally representative, cross-sectional population-based survey. We selected 2388 adults (aged ≥ 18 years) from the North, South, North-east, Central Regions, and Bangkok, using multi-stage cluster sampling. Mean sodium excretion was inflated by 10% to adjust for non-urinary sources. Multivariate logistic regression was performed to assess factors associated with sodium consumption ≥ 2000 mg. Among 1599 (67%) who completed urine collection, mean age was 43 years, 53% were female, and 30% had hypertension. Mean dietary sodium intake (mg/day) was 3636 (±1722), highest in South (4108 ± 1677), and lowest in North-east (3316 ± 1608). Higher sodium consumption was independently associated with younger age (Adjusted Odds Ratio (AOR) 2.81; 95% Confidence interval (CI): 1.53-5.17; p =.001); higher education (AOR 1.79; 95% CI: 1.19-2.67; p =.005), BMI ≥ 25 (AOR 1.55; 95% CI: 1.09-2.21; p=.016), and hypertension (AOR 1.58; 95% CI: 1.02-2.44; p =.038). Urine potassium excretion was 1221 mg/day with little variation across Regions. Estimated dietary sodium consumption in Thai adults is nearly twice as high as recommended levels. These data provide a benchmark for future monitoring.
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    Evaluations of larvicidal activity of medicinal plant extracts to Aedes aegypti (Diptera: Culicidae) and other effects on a non target fish
    (2006-01-01) Suwannee Promsiri; Amara Naksathit; Maleeya Kruatrachue; Usavadee Thavara; Songkhla Rajabhat University; Mahidol University; National Institutes of Health, Bethesda
    Abstract A preliminary study was conducted to investigate the effects of the extracts of 112 medicinal plant species, collected from the southern part of Thailand, on Aedes aegypti. Studies on larvicidal properties of plant extracts against the fourth instar larvae revealed that extracts of 14 species showed evidence of larvicidal activity. Eight out of the 14 plant species showed 100% mosquito larvae mortality. The LC50values were less than 100 μg/mL (4.1μg/mL-89.4 μg/mL). Six plant species were comparatively more effective against the fourth instar larvae at very low concentrations. These extracts demonstrated no or very low toxicity to guppy fish (Poecilia reticulata), which was selected to represent most common non-target organism found in habitats of Ae. aegypti, at concentrations active to mosquito larvae. Three medicinal plants with promising larvicidal activity, having LC50and LC90values being 4.1 and 16.4 μg/mL for Mammea siamensis, 20.2 and 34.7 μg/mL for Anethum graveolens and 67.4 and 110.3 μg/mL for Annona muricata, respectively, were used to study the impact of the extracts on the life cycle of Ae. aegypti. These plants affected pupal and adult mortality and also affected the reproductive potential of surviving adults by reducing the number of eggs laid and the percentage of egg hatchability. When each larval stage was treated with successive extracts at the LC50value, the first instar larvae were found to be very susceptible to A. muricata and the second instar larvae were found to be susceptible to A. graveolens, while the third and fourth instar larvae were found to be susceptible to M. siamensis. These extracts delayed larval development and inhibited adult emergence and had no adverse effects on P. reticulata at LC50and LC90values, except for the M. siamensis extract at its LC50value. © 2017 Wiley. All rights reserved.
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    A new species of Chlamydia isolated from Siamese crocodiles (Crocodylus siamensis)
    (2021-05-01) Somjit Chaiwattanarungruengpaisan; Metawee Thongdee; Songtham Anuntakarun; Sunchai Payungporn; Nlin Arya; Apichart Punchukrang; Pongrama Ramasoota; Sombat Singhakaew; Thassanant Atithep; Ladawan Sariya; Faculty of Tropical Medicine, Mahidol University; Songkhla Rajabhat University; Vidyasirimedhi Institute of Science and Technology; Chulalongkorn University; Mahidol University
    Chlamydia is a known pathogen in both saltwater and freshwater crocodiles. However, the exact species/strain has not been clearly identified. In this study, we successfully cultivated Siamese crocodile Chlamydia in McCoy cells at a temperature of 30◦C. Electron microscopy; phylogeny based on nine conserved taxonomically informative markers, on ompA, or on seven housekeeping genes; and whole-genome sequencing and analysis of the isolate confirmed the identity of the isolate as a new member of the genus Chlamydia, a new species that we name Chlamydia crocodili.