79 results on '"Sunanta P"'
Search Results
52. Posterior Cervical lymph Node Metastasis as the Valuable Prognostic Factor for Stage IVA/IVB Nasopharyngeal Carcinoma Treated with Induction Chemotherapy Followed by Concurrent Chemo-Radiotherapy
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Thephamongkhol, Kullathorn, Setakornnukul, Jiraporn, Rojwatkarnjana, Sunanta, and Chansilpa, Yaowalak
- Abstract
Introduction/Aim To evaluate the prognostic properties of retropharyngeal lymph node (RP), posterior cervical lymph node (PCN), and supraclavicular lymph node (SPC), in stage IVA/IVB nasopharyngeal carcinoma (NPC) patients in setting of induction chemotherapy.Methods We performed a retrospective study including 43 patients with stage IVA/IVB NPC (7thAJCC) treated with induction chemotherapy followed by concurrent chemo-radiotherapy. We analyzed prognosis with the multivariate Cox regression model and p-value from the Wald's test, using the backward elimination method (by likelihood ratio test and percent change of coefficient factors).Result Overall, 24 patients (55.8%) were in stage IVA and 19 (44.2%) in stage IVB. After a median follow-up time of 30 months, the 2-year overall survival (OS) was 79.1%, while the 2-year progression free survival (PFS) and distant metastasis free survival (DMFS) were 59.8% and 69.1%, respectively. In multivariate analysis for predicting DMFS, SPC involvement was not statistically significant (HR 3.39; 95% CI 0.76-15.07; p=0.1), whereas RP involvement was statistically significant (HR 5.81; 95% CI 1.08-31.16; p=0.04). Moreover, and more importantly, PCN involvement was the only nodal factor to predict all of DMFS, PFS, and OS (respectively HR 5.57, 95% CI 1.12-27.71, p=0.036; HR 16.05, 95% CI 1.93-133.65, p=0.01; and HR 28.02, 95% CI 2.74-286.22, p=0.005).Discussion PCN involvement is the only independent prognostic factor of stage IVA/IVB NPC patients treated by induction chemotherapy that predicts DMFS and turns this effect to PFS and OS. PCN involvement is a highly accurate predictor for failure of conventional chemo-radiotherapy. Therefore, patients with PCN involvement should be defined at high-risk, as to be investigated for a new staging system.
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- 2014
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53. Assessment Lumboperitoneal or Ventriculoperitoneal Shunt Patency by Radionuclide Technique: A Review Experience Cases
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Chiewvit, Sunanta, Nuntaaree, Sarun, Kanchaanapiboon, Potjanee, and Chiewvit, Pipat
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- 2014
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54. Antibacterial activity of polysaccharide gel extract from fruit rinds of Durio zibethinusMurr. against oral pathogenic bacteria
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Thunyakipisal, Pasutha, Saladyanant, Thatsanee, Hongprasong, Naulchavee, Pongsamart, Sunanta, and Apinhasmit, Wandee
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Aim: The polysaccharide gel (PG) extract from durian fruit rinds (Durio zibethinusMurr. “Monthong”) is a pectic polysaccharide with antibacterial activity. This study aimed to investigate the in vitroantibacterial activity of PG against oral pathogens, Streptococcus mutans(S. mutans) and Aggregatibacter actinomycetemcomitans(A. actinomycetemcomitans).
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- 2010
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55. Spatial and temporal variations of ambient PM 10-bound polycyclic aromatic hydrocarbons in Chiang Mai and Lamphun Provinces, Thailand
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Chantara, Somporn, Wangkarn, Sunanta, Sangchan, Walaya, and Rayanakorn, Mongkon
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Respirable airborne particulate matters (PM10) were collected using high volume air samplers for 24 h every three days from four sampling stations in Chiang Mai and Lamphun Provinces, Thailand. The maximum PM10concentration for each sampling station ranged from 140 to 182 ug/m3. PM10-bound polycyclic aromatic hydrocarbons (PAHs) were extracted from quartz fiber filters and analysed by gas chromatography-mass spectrometry (GC-MS). Mean concentration of total PAHs was in a range from 1.7 to 12.2 ng/m3. Ratio of non-carcinogenic and carcinogenic PAHs found was approximately 1:3 or 1:4 depending on sampling sites. Concentrations of most of carcinogenic PAHs were found to be positively correlated to PM10concentrations. Seasonal variation of PM10-bound PAHs was obviously seen in all sites. The highest concentration was found in dry season (December-March). Spatial variation was observed in one sampling site, where PAHs content was significantly higher than other sites. Apart from traffic congestion, this was probably due to specific local activities i.e. biomass burning.
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- 2010
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56. High-Temperature Poly(phthalazinone ether ketone) Thin Films for Dielectric Energy Storage
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Pan, Jilin, Li, Kun, Chuayprakong, Sunanta, Hsu, Tim, and Wang, Qing
- Abstract
The synthesis and characterization of poly(phthalazinone ether ketone) (PPEK) for high-temperature electric energy storage applications is described. It was found that PPEK displayed excellent stability of the dielectric properties over a broad frequency and temperature range. Little change in the breakdown field and discharge time has been observed in PPEK with the increase of temperature up to 190 °C. A linear correlation between the AC conductance and the angular frequency implied that the hopping as a dominant conduction process contributed to the dielectric loss. Superior energy densities, remarkable breakdown strengths, and fast discharge speeds have been demonstrated in PPEK at various temperatures.
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- 2010
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57. Role of Glutathione S-Transferase Omega Gene Polymorphisms in Breast-Cancer Risk
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Chariyalertsak, Sunanta, Purisa, Wichai, and Sangrajrang, Suleeporn
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Background/Aims Genetically influenced variations in the levels of activity and/or expression of some members of the glutathione S-transferase (GST) family have been identified as risk factors for cancer. One, GST omega (GSTO), has been found in a very limited number of studies. The aim of the present study was to investigate the influence of GSTO1and GSTO2polymorphisms on breast cancer risk.Methods DNA isolated from the blood of 101 patients with breast cancer and 151 healthy controls was investigated for GSTO1and GSTO2polymorphisms by polymerase chain reaction-restriction-fragment length polymorphism.Results Univariate and multivariate analyses showed no association between GSTO1and GSTO2genotypes and the risk of breast cancer. A higher prevalence of wild-type GSTO1(A140/A140) was significantly correlated with advanced-stage breast cancer (OR = 0.1, 95% CI, 0.01-0.77), but the presence of the genotype did not correlate with patient age at diagnosis, menopausal status, tumor size, lymph node metastasis, or estrogen-receptor status. No association was found between GSTO2genotype and clinicopathological features.Conclusions The results of the study suggest that GSTO1and GSTO2variants are not associated with breast cancer risk, but that wild-type GSTO1(A140/A140) is likely among cases at an advanced stage.
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- 2009
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58. A Latent Class Analysis of DSM-III-R Pathological Gambling Criteria in Middle-Aged Men Association with Psychiatric Disorders
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Xian, Hong, Shah, Kamini R., Potenza, Marc N., Volberg, Rachel, Chantarujikapong, Sunanta, True, William R., Lyons, Michael J., Tsuang, Ming T., and Eisen, Seth A.
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This study was designed to empirically derive latent classes based on PG criteria and to assess the association between nongambling psychiatric disorders and specific classes.
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- 2008
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59. Lifetime and 12-month prevalence of psychiatric disorders in 8,169 male Vietnam War era veterans.
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Eisen, Seth A, Griffith, Kristin H, Xian, Hong, Scherrer, Jeffrey F, Fischer, Irene D, Chantarujikapong, Sunanta, Hunter, Joyce, True, William R, Lyons, Michael J, and Tsuang, Ming T
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This study reports the prevalence of psychiatric disorders among a nationally distributed sample of Vietnam Era veterans assessed using standardized psychiatric interviewing methods.
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- 2004
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60. High-speed separation of arsenic compounds using narrow-bore high-performance liquid chromatography on-line with inductively coupled plasma mass spectrometry
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Wangkarn, Sunanta and Pergantis, Spiros A.
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The growing importance of arsenic speciation analysis has led to the development of a wide range of high-performance liquid chromatographic based hyphenated techniques. During the present study a method was developed for the high-speed separation of several biologically and environmentally important arsenic compounds. The method is based on the use of an octadecyldimethylsilyl reversed-phase narrow-bore HPLC column. Separation of anionic arsenic species [arsenite (Aite), dimethylarsinic acid (DMAA), monomethylarsonic acid (MMAA), and arsenate (Aate)] can be achieved using a mobile phase containing 5 mm tetrabutylammonium hydroxide as the ion-pairing reagent, at pH 6.0, in less than 2 min, when employing a flow rate of 0.7 ml min−1. Adding 4-hydroxyphenylarsonic acid as the internal standard prolongs the total separation time by 30 s. On-line coupling with inductively coupled plasma mass spectrometry affords high sensitivity, as well as low limits of detection (low ppb or pg of arsenic). The influence of mobile phase pH and ion-pairing reagent concentration on the separation efficiency was studied. A loss of resolution occurs with increasing ion-pairing reagent concentration; the optimum pH is between 6.0 and 6.2. The ion-pair reversed-phase narrow-bore HPLC-ICP-MS method was subsequently applied to the speciation of arsenic in wine and kelp samples. Aite at trace levels was found to be the only arsenic species present in several wines. Average spike recoveries for Aite, Aate, MMAA and DMAA were 95 ± 3, 94 ± 5, 98 ± 1 and 92 ± 1%, respectively, for all wines examined. The method was also used for the speciation of four arsenosugars and DMAA in a kelp powder extract.
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- 2000
61. A Double-Blind Placebo-Controlled Study of an Infusion of Lexipafant (Platelet-Activating Factor Receptor Antagonist) in Patients with Severe Sepsis
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Suputtamongkol, Yupin, Intaranongpai, Sunanta, Smith, Michael D., Angus, Brian, Chaowagul, Wipada, Permpikul, Chairat, Simpson, Julie A., Leelarasamee, Amorn, Curtis, Lloyd, and White, Nicholas J.
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ABSTRACTPlatelet-activating factor (PAF) is a potent endogenous proinflammatory mediator implicated in the pathogenesis of septic shock. A double-blind randomized placebo-controlled trial of an intravenous PAF receptor antagonist (lexipafant) was conducted with 131 adult Thai patients with suspected severe sepsis (66 of whom had positive blood cultures). Detailed serial clinical, biochemical, and cytokine measurements were performed. Lexipafant treatment was well tolerated. The 28-day mortality in the lexipafant group (61.4%) was similar to that in the placebo group (62.6%). There was also no evidence that lexipafant affected clinical or biochemical measures of disease severity or the profile of sequentially measured plasma cytokine levels. PAF may not have an important role in the pathogenesis of severe sepsis.
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- 2000
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62. Tamarind seed coat extract restores reactive oxygen species through attenuation of glutathione level and antioxidant enzyme expression in human skin fibroblasts in response to oxidative stress
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Oranuch Nakchat, Nonthaneth Nalinratana, Duangdeun Meksuriyen, and Sunanta Pongsamart
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Tamarindus indica ,Seed coat ,Antioxidant ,Reactive oxygen species ,Glutathione ,Antioxidant enzymes ,CCD-1064Sk cells ,Arctic medicine. Tropical medicine ,RC955-962 ,Biology (General) ,QH301-705.5 - Abstract
Objective: To investigate the role and mechanism of tamarind seed coat extract (TSCE) on normal human skin fibroblast CCD-1064Sk cells under normal and oxidative stress conditions induced by hydrogen peroxide (H2O2). Methods: Tamarind seed coats were extracted with boiling water and then partitioned with ethyl acetate before the cell analysis. Effect of TSCE on intracellular reactive oxygen species (ROS), glutathione (GSH) level, antioxidant enzymes such as superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase activity including antioxidant protein expression was investigated. Results: TSCE significantly attenuated intracellular ROS in the absence and presence of H2O2 by increasing GSH level. In the absence of H2O2, TSCE significantly enhanced SOD and catalase activity but did not affected on GPx. Meanwhile, TSCE significantly increased the protein expression of SOD and GPx in H2O2-treated cells. Conclusions: TSCE exhibited antioxidant activities by scavenging ROS, attenuating GSH level that could protect human skin fibroblast cells from oxidative stress. Our results highlight the antioxidant mechanism of tamarind seed coat through an antioxidant enzyme system, the extract potentially benefits for health food and cosmeceutical application of tamarind seed coat.
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- 2014
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63. Determination of arsenic in organic solvents and wines using microscale flow injection inductively coupled plasma mass spectrometry
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Wangkarn, Sunanta and Pergantis, Spiros A.
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The presence of carbon-containing substances can enhance As signals and elevate background levels observed in inductively coupled plasma mass spectrometry (ICP-MS), thus causing potential errors in the quantification of As. Most approaches for eliminating these interferences are tedious and time consuming and increase the risk of sample contamination and analyte loss. A microscale flow injection (μFI) system employing a microconcentric nebulizer (MCN) for efficient sample introduction into the ICP-MS system was used to reduce signal enhancement effects. Also investigated was the suitability of several elements (Se, Y, In and Sb) to be used as internal standards for As in samples containing organic solvents. The μFI-ICP-MS system developed in this study was shown to reduce the signal enhancement caused by organic solvents by a factor of 2-3 compared with a conventional FI-ICP-MS system. Sample volumes of 0.2, 0.5 or 1.0 μl were injected into the μFI-ICP-MS system at carrier flow rates ranging from 50 to 200 μl min−1. Response profiles obtained following the injection of 1.0 μl solutions containing 20 pg μl−1 As at carrier flows of 50, 100 or 200 μl min−1, allowed for throughputs of approximately 80, 140 or 180 samples per hour, respectively. The relative standard deviation (%RSD) of the transient signals, determined over a 20 min period at the previously mentioned flow rates, ranged from 2 to 5%. The calculated absolute limit of detection of the μFI-ICP-MS system, ranging from 25 to 59 fg As, demonstrates the method's potential for determining As at ultratrace levels. The μFI-ICP-MS method was subsequently used to determine As in red and white wines. Diluted wine samples (1+1 dilution in de-ionised water) were analysed without any further sample preparation. When using In as the internal standard the average recovery of As was found to be 100±2%. The concentration of As was determined to be between 7 and 13 pg μl−1 for all wines examined. These values are significantly lower than the reported maximum permissible concentration limits for As in wine.`mv-8\
- Published
- 1999
64. Comparison of the Alcohol Dependence Scale and Diagnostic Interview Schedule in Homeless Women
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Chantarujikapong, Sunanta I., Smith, Elizabeth M., and Fox, Louis W.
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The Alcohol Dependence Scale (ADS) is a 25 item self‐report instrument designed to evaluate the degree of severity of alcohol dependence. Although previous studies have reported on the validity of the ADS, no studies using the ADS have been done on the homeless population, a special and rapidly growing population. To assess the utility of the ADS in a population of homeless, substance‐abusing women, the ADS questionnaire was compared with the DSM‐III‐R alcohol use disorder diagnosis as measured by the Diagnostic Interview Schedule (DIS). Both the ADS and the DIS were administered to 149 homeless, substance‐abusing women by trained, lay interviewers. There was good agreement between the ADS and the past‐year DIS diagnosis of alcohol use disorder. The level of agreement between the ADS and DIS, as well as sensitivity and specificity, for various ADS cutoff scores are reported to facilitate selection of cutoff scores by clinicians and future researchers.
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- 1997
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65. Residential mobility in private lower-cost housing in Bangkok
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Savasdisara, Tongchai, Tips, Walter E. J., and Suwannodom, Sunanta
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The literature on residential satisfaction and mobility for Western countries is extensive and has yielded a number of models explaining mobility in the housing market. By studying a large number of residents of private lower-cost housing estates in Bangkok (Thailand) a model is built explaining residential mobility in low-income countries. The strongest predictor of mobility is home ownership followed by residential satisfaction itself. This contradicts earlier results in developed countries. Satisfaction with the individual dwelling unit, satisfaction with the environment of the estate and the age of the head of household also, with decreasing strength, influence plans to move.
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- 1988
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66. Utilization of electrocoagulation for the isolation of alkaloids from the aerial parts of Stemona aphylla and their mosquitocidal activities against Aedes aegypti.
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Chalom, Sirinrat, Jumpatong, Kanlaya, Wangkarn, Sunanta, Chantara, Somporn, Phalaraksh, Chitchol, Dheeranupattana, Srisulak, Suwankerd, Wannapa, Pyne, Stephen G., and Mungkornasawakul, Pitchaya
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AEDES aegypti ,ALKALOIDS ,ELECTROCOAGULATION (Chemistry) ,ISOQUINOLINE alkaloids ,NATURAL products ,SOLVENT extraction - Abstract
The electrocoagulation (EC) technique is an alternative method of isolating natural products with the advantage of minimizing the amounts of organic solvents required for this process, which are often harmful to the environment. In this research, the EC and the conventional solvent extraction methods were used in the isolation of Stemona alkaloids from the aerial parts of Stemona aphylla. A comparison was made between the amounts of the isolated alkaloids and the solvents used. The isolated alkaloids were evaluated for their larvicidal, ovicidal and oviposition-deterrent activities against the dengue vector, Aedes aegypti. The morphology and histopatology of the alkaloid treated larvae were also investigated. Two Stemona alkaloids, (2′ S)-hydroxystemofoline and stemofoline, were isolated from both the EC and the conventional method. The amounts of (2′ S)-hydroxystemofoline from the EC method was about the same as that obtained from the conventional method. However, the amounts of stemofoline obtained from the EC method were about two times larger than those obtained from the conventional method. Importantly, the EC method required six times less total organic solvents. The larvicidal activity assays of (2′ S)-hydroxystemofoline and stemofoline showed that these were highly effective against Aedes aegypti larvae with LC 50 values of 3.91 μg/ml and 4.35 μg/ml, respectively. Whereas, the crude EC extract (LC 50 = 11.86 μg/ml) showed greater larvicidal activity than the crude extract obtained from the conventional extraction method (LC 50 = 53.40 μg/ml). The morphological observations of the (2′ S)-hydroxystemofoline and the stemofoline treated larvae revealed that the anal gills were the sites of aberrations. A histopathological study showed that larvae treated with these alkaloids had cytopathological alterations to the epithelial cells of the midgut. At a concentration 40 μg/ml (2′ S)-hydroxystemofoline showed 100% ovicidal activity on 24 h old eggs while stemofoline showed 97.2%. Furthermore, the oviposition-deterrent effects of (2′ S)-hydroxystemofoline and stemofoline, at a concentration of 80 μg/ml were 99.5% and 97.2%, respectively. Image 1 • Two alkaloids were isolated for the first time from the aerial parts of S. aphylla. • The EC method can be applied to the isolation of Stemona alkaloid. • The Stemona alkaloid showed high potential as a mosquitocide against Ae. aegypti. [ABSTRACT FROM AUTHOR]
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- 2019
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67. Lipid entrapment property of polysaccharide gel (PG) extracted from fruit-hulls of durian (Durio zibethinus Murr. Cv. Mon-Thong)
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Maneewan Suksomtip, Sunanta Pongsamart, and Chutima Tippayakul
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polysaccharide gel ,Durio zibethinus ,lipid entrapment property ,membrane dialysis method ,Technology ,Technology (General) ,T1-995 ,Science ,Science (General) ,Q1-390 - Abstract
Lipid entrapment property of polysaccharide gel (PG) extracted from fruit-hulls of durian (Durio zibethinus Murr. Cv. Mon-Thong) was investigated in vitro by semi- permeable membrane dialysis technique using both cellulose membrane and gut sacs of disected jejunum of rat. Lipids (cholesterol, oleic acid and stearic acid) were mixed with 0-2%W/V PG in the presence of bile salt as a surface active agent in dialysis membrane. Lipids inside and outside dialysis membrane were analyzed by HPLC method after 4-16 hours of dialysis in Ringer lactate buffer pH7. Increasing PG concentration resulted in increasing lipids trapped inside membrane and decreasing lipids released outside membrane. Two percent PG trapped about 80-90%cholesterol. The result of PG trapping cholesterol in egg york showed that egg york cholesterol released outside membrane was decreased with increasing PG concentration. A significant relationship was found between the decreasing of absorbed cholesterol into everted rat jejunum with respect to increasing concen- tration of PG. These results suggested that durian polysaccharide gel is able to entrap lipids and it seems to have potential use as medicinal dietary food for lipid controlling patient. Furthermore, in vitro study using cellulose semi- permeable membrane dialysis method may be applied for preliminary evaluation of polysaccharide effecting lipids absorption.
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- 2005
68. Antimicrobial activity (in vitro) of polysaccharide gel from durian fruit-hulls
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Vimolmas Lipipun, Nantawan Nantawanit, and Sunanta Pongsamart
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Durio zibethinus ,durian-rind extracts ,durian polysaccharides ,anti-microbial ,bactericide ,Technology ,Technology (General) ,T1-995 ,Science ,Science (General) ,Q1-390 - Abstract
In vitro activity study of polysaccharide gel (PG) extracted from fruit-hulls of durian (Durio zibethinus L.) was performed to evaluate the activities against microorganisms. Inhibitory activity of PG against two bacterial strains, Staphylococcus aureus and Escherichia coli, and two yeast strains, Candida albicans and Saccharomyces cerevisiae, were determined by microbiological assay techniques using a simple agar diffusion and broth dilution method. PG at the concentration 0.32% in distilled water showed inhibition zone on TSA medium against S. aureus, and MIC of PG in TSB medium against S. aureus was 0.64 mg/ml. However, the lowest concentration of PG in distilled water at 1.25% and 2.50% produced inhibitory activity on MNG agar medium against S. aureus and E. coli, respectively, and an inhibition zone with sharp and clear delineated zone margins was obtained. Inhibitory activity of PG at the lowest concentration of 1% in peptone broth medium against E. coli and S. aureus was demonstrated: the colony count at 24 hours declined to zero and to 15%, respectively. However, both strains of test bacteria in NSS were inhibited in the presence of 0.1% PG: the colony count at 24 hours declined to zero. PG showed no inhibitory activity against two strains of test yeast in this study.
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- 2002
69. Cloning and Expression Analysis of the Bombyx mori &agr;-amylase Gene (Amy) from the Indigenous Thai Silkworm Strain, Nanglai
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Ngernyuang, Nipaporn, Kobayashi, Isao, Promboon, Amornrat, Ratanapo, Sunanta, Tamura, Toshiki, and Ngernsiri, Lertluk
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- 2011
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70. 1375 ACCURACY OF SKINSURFACE CO2MEASUREMENT IN SICK PRETERM AND TERM NEONATES
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Merritt, T. Allen, Liyamasawad, Sunanta, Boettrich, Christian, and Brooks, John G.
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- 1981
71. Pharmaceutical Potential Evaluation of Damask Rose By-Products from Volatile Oil Extraction.
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Charoimek N, Sunanta P, Tangpao T, Suksathan R, Chanmahasathien W, Sirilun S, Hua KF, Chung HH, Sommano SR, and Junmahasathien T
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Despite its well-known fragrance in cosmetics and medicine, a complete understanding of the phytochemical properties within by-products generated during commercial extraction of Damask rose remains elusive. Cultivated in Thailand for their essential oil, Damask rose varieties, including Mon Dang Prasert, Mon Klai Kangwon, and Bishop's Castle, share phenylethyl alcohol (57.62-61.11%) as the dominant component, which is responsible for their characteristic floral, sweet, rosy, and bready aroma. Through a circular hydro-distillation process, three different by-product fractions, including distilled water (D), hydrosol (H), and rose dreg (R), were recovered. Subsequently, we assessed their pharmaceutical potential, including the antioxidant, antimicrobial, anti-inflammatory, and anti-melanogenesis properties of these residual substances. The H fraction displayed the highest total phenolics (10.56 mgGAE/g) and flavonoids (6.93 mgCE/g) and significant antioxidant activity (IC
50 , 0.67-0.97 µg/mL). While the H fraction inhibited melanin formation at 50 μg/mL, the R fraction of MK (100 μg/mL) surprisingly promoted melanin production in B16-F10 cells. Nevertheless, the antimicrobial assay against Staphylococcus aureus , Cutibacterium acnes , Staphylococcus epidermidis , Pseudomonas aeruginosa , Escherichia coli , and Candida albicans revealed no antimicrobial activity in any fraction. Murine macrophage stimulation (J774A.1) with lipopolysaccharide revealed no anti-inflammatory effects from the by-products, as measured by IL-1β production. In summary, the H fraction exhibited the highest level of phenolic and flavonoid contents, as well as antioxidant and anti-melanogenesis activities. Therefore, this by-product is a desirable choice for the development of value-added products such as functional food, cosmetics, and pharmaceutical products.- Published
- 2024
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72. Fractionation and characterisation of pectin-rich extracts from garlic biomass.
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Sunanta P, Rose Sommano S, Luiten CA, Ghofrani M, Sims IM, Bell TJ, Carnachan SM, Hinkley SFR, and Kontogiorgos V
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- Biomass, Pectins chemistry, Polysaccharides chemistry, Galactose chemistry, Garlic
- Abstract
Polysaccharides from garlic waste leaf and skin biomass have been isolated using a sequential extraction protocol and characterised using constituent sugar composition and linkage analysis, spectroscopy, chromatography and dilute solution viscometry. The results revealed that the isolated polysaccharides were predominantly pectins. The predominant monosaccharide in all samples was galacturonic acid (>61 %), followed by galactose and rhamnose. The pectins extracted from skin biomass were mainly homogalacturonan (83-91 %), whereas those extracted from leaf biomass comprised both homogalacturonan (62-65 %) and rhamnogalacturonan-I (35-38 %). The degree of methyl esterification of uronic acids in all samples was 44-56 %. The peak molecular weight of the main polysaccharide population in each sample was ∼ 350 x10
3 g/mol, with leaf extracts and the skin acidic extract containing a second, lower molecular weight peak. Overall, waste garlic biomass is a potential resource for commercial pectin extraction for use in food or pharmaceutical industries., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)- Published
- 2024
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73. Banana Peel ( Musa ABB cv. Nam Wa Mali-Ong) as a Source of Value-Adding Components and the Functional Properties of Its Bioactive Ingredients.
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Khamsaw P, Sommano SR, Wongkaew M, Willats WGT, Bakshani CR, Sirilun S, and Sunanta P
- Abstract
Banana peel (BP) is the primary by-product generated during banana processing which causes numerous environmental issues. This study examines the physical attributes, proximate analysis, glycoarray profiling, antioxidant abilities, and prebiotic activity of BP. The analysis demonstrated that carbohydrates constituted the primary components of BP and the glycoarray profiling indicated that BP contains multiple pectin and hemicellulose structures. BP also contained phenolic compounds, including (+)-catechin and gallic acid, flavonoid compounds, and antioxidant activities. BP demonstrated prebiotic effects by promoting the proliferation of advantageous gut bacteria while inhibiting the growth of harmful bacteria. The prebiotic index scores demonstrated that BP exhibited a greater capacity to promote the growth of beneficial bacteria in comparison to regular sugar. The study demonstrated the potential of the BP as a valuable source of dietary fibre, bioactive compounds, and prebiotics. These components have beneficial characteristics and can be utilised in the production of food, feed additives, and functional food.
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- 2024
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74. Do Abiotic Stresses Affect the Aroma of Damask Roses?
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Charoimek N, Phusuwan S, Petcharak C, Huanhong K, Prasad SK, Junmahasathien T, Khemacheewakul J, Sommano SR, and Sunanta P
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Roses are popular ornamental plants all over the world. Rosa damascena Mill., also known as the damask rose, is a well-known scented rose species cultivated to produce essential oil. The essential oils obtained are high in volatile organic compounds (VOCs), which are in demand across the pharmaceutical, food, perfume, and cosmetic industries. Citronellol, nonadecane, heneicosane, caryophyllene, geraniol, nerol, linalool, and phenyl ethyl acetate are the most important components of the rose essential oil. Abiotic factors, including as environmental stress and stress generated by agricultural practises, frequently exert a selective impact on particular floral characteristics, hence influencing the overall quality and quantity of rose products. Additionally, it has been observed that the existence of stress exerts a notable impact on the chemical composition and abundance of aromatic compounds present in roses. Therefore, understanding the factors that affect the biosynthesis of VOCs, especially those representing the aroma and scent of rose, as a response to abiotic stress is important. This review provides comprehensive information on plant taxonomy, an overview of the volatolomics involving aromatic profiles, and describes the influence of abiotic stresses on the biosynthesis of the VOCs in damask rose.
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- 2023
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75. The nutritional value, bioactive availability and functional properties of garlic and its related products during processing.
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Sunanta P, Kontogiorgos V, Pankasemsuk T, Jantanasakulwong K, Rachtanapun P, Seesuriyachan P, and Sommano SR
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Garlic, a common culinary spice, is cultivated and used around the globe. Consumption of garlic and its supplements reduces the risk of diabetes and cardiovascular disease and boosts the immune system with antibacterial, antifungal, anti-aging, and anti-cancer properties. Diallyl sulfide, diallyl disulfide, triallyl trisulfide, phenolics, flavonoids, and others are the most commercially recognized active ingredients in garlic and its products. In recent years, global demand for medicinal or functional garlic has surged, introducing several products such as garlic oil, aged garlic, black garlic, and inulin into the market. Garlic processing has been demonstrated to directly impact the availability of bioactive ingredients and the functionality of products. Depending on the anticipated functional qualities, it is also recommended that one or a combination of processing techniques be deemed desirable over the others. This work describes the steps involved in processing fresh garlic into products and their physicochemical alterations during processing. Their nutritional, phytochemical, and functional properties are also reviewed. Considering the high demand for functional food, this review has been compiled to provide guidance for food producers on the industrial utilization and suitability of garlic for new product development., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Sunanta, Kontogiorgos, Pankasemsuk, Jantanasakulwong, Rachtanapun, Seesuriyachan and Sommano.)
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- 2023
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76. Mass Spectrometry-Based Metabolomics of Phytocannabinoids from Non-Cannabis Plant Origins.
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Sommano SR, Sunanta P, Leksawasdi N, Jantanasakulwong K, Rachtanapun P, Seesuriyachan P, Phimolsiripol Y, Sringarm K, Ruksiriwanich W, Jantrawut P, and Chittasupho C
- Subjects
- Cannabinoid Receptor Agonists, Humans, Mass Spectrometry, Metabolomics, Cannabinoids chemistry, Cannabis chemistry, Hallucinogens
- Abstract
Phytocannabinoids are isoprenylated resorcinyl polyketides produced mostly in glandular trichomes of Cannabis sativa L. These discoveries led to the identification of cannabinoid receptors, which modulate psychotropic and pharmacological reactions and are found primarily in the human central nervous system. As a result of the biogenetic process, aliphatic ketide phytocannabinoids are exclusively found in the cannabis species and have a limited natural distribution, whereas phenethyl-type phytocannabinoids are present in higher plants, liverworts, and fungi. The development of cannabinomics has uncovered evidence of new sources containing various phytocannabinoid derivatives. Phytocannabinoids have been isolated as artifacts from their carboxylated forms (pre-cannabinoids or acidic cannabinoids) from plant sources. In this review, the overview of the phytocannabinoid biosynthesis is presented. Different non-cannabis plant sources are described either from those belonging to the angiosperm species and bryophytes, together with their metabolomic structures. Lastly, we discuss the legal framework for the ingestion of these biological materials which currently receive the attention as a legal high.
- Published
- 2022
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77. Amino Acid Profiling and Chemometric Relations of Black Dwarf Honey and Bee Pollen.
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Sommano SR, Bhat FM, Wongkeaw M, Sriwichai T, Sunanta P, Chuttong B, and Burgett M
- Abstract
This research reports the characterization of bee pollen of Apis andreniformis colonies on the basis of morphology, proximate composition, the amino acid, and nutritive patterns in relation with their honey. The pollen gains of the sampling colonies revealed variations in their structure, symmetry, and sculpture. The exile surfaces of the pollens showed psilate, scabrate, clavate, and echinate types of morphology. Total amino acid content of black dwarf honeybee collected pollen (150 mg/g) was found significantly higher than that of honey (15 mg/g) from the same colony. Threonine, phenylalanine, and leucine were among the highest essential amino acid types found in the analyzed pollen and honey samples. The proline content in both products was found the lowest comparing to other amino acid types. The moisture content of the honey samples were found to exceed the limit as prescribed by Codex Alimentarius Commission (<20%). The ash content of the analyzed samples was mostly within the limits (<0.6%) prescribed by international norms. The fat content of the pollens varied from 5.01 to 5.05%, and the honey showed zero fat content. The carbohydrate content in the honey samples was found to differ significantly from each other with a maximum content (73.16%), and the lowest carbohydrate content was 67.80%. The pollen and honey samples were found to have positive effect on in vitro digestibility of proteins., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2020 Sommano, Bhat, Wongkeaw, Sriwichai, Sunanta, Chuttong and Burgett.)
- Published
- 2020
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78. Deep learning for automated classification of tuberculosis-related chest X-Ray: dataset distribution shift limits diagnostic performance generalizability.
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Sathitratanacheewin S, Sunanta P, and Pongpirul K
- Abstract
Background: Machine learning has been an emerging tool for various aspects of infectious diseases including tuberculosis surveillance and detection. However, the World Health Organization (WHO) provided no recommendations on using computer-aided tuberculosis detection software because of a small number of studies, methodological limitations, and limited generalizability of the findings., Methods: To quantify the generalizability of the machine-learning model, we developed a Deep Convolutional Neural Network (DCNN) model using a Tuberculosis (TB)-specific chest x-ray (CXR) dataset of one population (National Library of Medicine Shenzhen No.3 Hospital) and tested it with non-TB-specific CXR dataset of another population (National Institute of Health Clinical Centers)., Results: In the training and intramural test sets using the Shenzhen hospital database, the DCCN model exhibited an AUC of 0.9845 and 0.8502 for detecting TB, respectively. However, the AUC of the supervised DCNN model in the ChestX-ray8 dataset was dramatically dropped to 0.7054. Using the cut points at 0.90, which suggested 72% sensitivity and 82% specificity in the Shenzhen dataset, the final DCNN model estimated that 36.51% of abnormal radiographs in the ChestX-ray8 dataset were related to TB., Conclusion: A supervised deep learning model developed by using the training dataset from one population may not have the same diagnostic performance in another population. Conclusion: Technical specification of CXR images, disease severity distribution, dataset distribution shift, and overdiagnosis should be examined before implementation in other settings., (© 2020 The Author(s).)
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- 2020
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79. Genomic relationship and physiochemical properties among raw materials used for Thai black garlic processing.
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Sunanta P, Chung HH, Kunasakdakul K, Ruksiriwanich W, Jantrawut P, Hongsibsong S, and Sommano SR
- Abstract
Raw materials used for black garlic (BG) processing were collected from the major garlic production areas in Northern Thailand. Five of those were identified as of Thai origin (accession G1-G5), and accession G6 was of the Chinese variety. They were initially analyzed for varietal differences using morphological characteristics and genetic variation. Fresh materials from each accession were dried to the same moisture content (55%-60%) and BG processed at 75°C, 90% relative humidity (RH) for 15 days. Thereafter, physiochemical and chemical profiles were analyzed and compared. The dendrogram from random amplified polymorphic DNA fingerprints grouped G2, G3, G4, and G5 as closely related while G1 and G6 were out-groups. Prior to BG processing, the pH of fresh garlic was approximately 6.3 and decreased to 3.7, thereafter. The contents of chemical properties were independent with genotypes. BG processing improved phenolic, flavonoid, and antioxidant but the content of thiosulfinate was minimized in all BG samples. Overall, result indicated that garlics grown in Northern Thailand were genotypically variable. BG processing altered physical and chemical appearance, and these changes were independent with the genotypes., Competing Interests: The authors declare no conflict of interest with respect to the research., (© 2020 The Authors. Food Science & Nutrition published by Wiley Periodicals LLC.)
- Published
- 2020
- Full Text
- View/download PDF
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