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1.
Psychol Med ; 53(7): 3009-3020, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-37449485

RESUMEN

BACKGROUND: The efficacy of the unified protocol of the transdiagnostic treatment for emotional disorders (UP) has been poorly studied in patients with depressive disorders. This study aimed to examine the efficacy of UP for improving depressive symptoms in patients with depressive and/or anxiety-related disorders. METHODS: This assessor-blinded, randomized, 20-week, parallel-group, superiority study compared the efficacy of the UP with treatment-as-usual (UP-TAU) v. wait-list with treatment-as-usual (WL-TAU). Patients diagnosed with depressive and/or anxiety disorders and with depressive symptoms participated. The primary outcome was depressive symptoms assessed by GRID-Hamilton depression rating scale (GRID-HAMD) at 21 weeks. The secondary outcomes included assessor-rated anxiety symptoms, severity and improvement of clinical global impression, responder and remission status, and loss of principal diagnosis. RESULTS: In total, 104 patients participated and were subjected to intention-to-treat analysis [mean age = 37.4, s.d. = 11.5, 63 female (61%), 54 (51.9%) with a principal diagnosis of depressive disorders]. The mean GRID-HAMD scores in the UP-TAU and WL-TAU groups were 16.15 (s.d. = 4.90) and 17.06 (s.d. = 6.46) at baseline and 12.14 (s.d. = 5.47) and 17.34 (s.d. = 5.78) at 21 weeks, with a significant adjusted mean change difference of -3.99 (95% CI -6.10 to -1.87). Patients in the UP-TAU group showed significant superiority in anxiety and clinical global impressions. The improvement in the UP-TAU group was maintained in all outcomes at 43 weeks. No serious adverse events were observed in the UP-TAU group. CONCLUSIONS: The UP is an effective approach for patients with depressive and/or anxiety disorders.


Asunto(s)
Trastornos de Ansiedad , Terapia Cognitivo-Conductual , Humanos , Femenino , Adulto , Resultado del Tratamiento , Trastornos de Ansiedad/diagnóstico , Trastornos de Ansiedad/terapia , Terapia Cognitivo-Conductual/métodos , Ansiedad/psicología , Cognición
2.
Clin Psychol Psychother ; 29(4): 1481-1487, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35048459

RESUMEN

Affective styles are assumed to play an important role in maintaining negative affect, including anxiety and depression. However, little is known about the longitudinal relationship between affective styles and symptoms. Therefore, we conducted a longitudinal study to examine the influence of affective styles, assessed using the Affective Style Questionnaire, on anxiety and depression among clinical populations in Japan. Using an online survey, 1521 participants (406 with major depressive disorder; 479 with one or more anxiety disorders; and 636 with both) answered the Affective Style Questionnaire and measures of emotion regulation, anxiety and depression symptoms. Data were collected twice over 2 months. Confirmatory factor analyses replicated the same four-factor structure found in a previous sample of Japanese university students. Hierarchical regression analyses revealed that the affective styles had a slightly greater effect on anxiety symptoms but not on depression compared to other common emotion regulation strategies, such as suppression and reappraisal measured by the Emotion Regulation Questionnaire (ERQ). Limitations of this study were that it used online surveys, in which, participants' diagnostic statuses were based on unverifiable self-reports. In conclusion, the association of affective styles with anxiety and depression among the clinical populations was prospectively confirmed. Further study is needed to examine the association considering the combination or profiles of affective styles among different emotional disorders.


Asunto(s)
Depresión , Trastorno Depresivo Mayor , Ansiedad/complicaciones , Ansiedad/psicología , Trastornos de Ansiedad/complicaciones , Trastornos de Ansiedad/psicología , Depresión/complicaciones , Depresión/psicología , Humanos , Japón , Estudios Longitudinales , Encuestas y Cuestionarios
3.
Cancer Sci ; 112(10): 4303-4316, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34289205

RESUMEN

Yes-associated protein 1 (YAP1) and its paralogue PDZ-binding motif (TAZ) play pivotal roles in cell proliferation, migration, and invasion, and abnormal activation of these TEAD transcriptional coactivators is found in diverse cancers in humans and mice. Targeting YAP1/TAZ signaling is thus a promising therapeutic avenue but, to date, few selective YAP1/TAZ inhibitors have been effective against cancer cells either in vitro or in vivo. We screened chemical libraries for potent YAP1/TAZ inhibitors using a highly sensitive luciferase reporter system to monitor YAP1/TAZ-TEAD transcriptional activity in cells. Among 29 049 low-molecular-weight compounds screened, we obtained nine hits, and the four of these that were the most effective shared a core structure with the natural product alantolactone (ALT). We also tested 16 other structural derivatives of ALT and found that natural ALT was the most efficient at increasing ROS-induced LATS kinase activities and thus YAP1/TAZ phosphorylation. Phosphorylated YAP1/TAZ proteins were subject to nuclear exclusion and proteosomic degradation such that the growth of ALT-treated tumor cells was inhibited both in vitro and in vivo. Our data show for the first time that ALT can be used to target the ROS-YAP pathway driving tumor cell growth and so could be a potent anticancer drug.


Asunto(s)
Aciltransferasas/antagonistas & inhibidores , Proteínas Adaptadoras Transductoras de Señales/antagonistas & inhibidores , Antineoplásicos Fitogénicos/farmacología , Productos Biológicos/farmacología , Lactonas/farmacología , Especies Reactivas de Oxígeno/metabolismo , Sesquiterpenos de Eudesmano/farmacología , Aciltransferasas/metabolismo , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Animales , Auranofina/farmacología , Movimiento Celular , Núcleo Celular/metabolismo , Proliferación Celular/efectos de los fármacos , Autorrenovación de las Células , Proteínas de Unión al ADN/metabolismo , Descubrimiento de Drogas , Femenino , Inula/química , Luciferasas , Masculino , Ratones , Ratones Endogámicos BALB C , Ratones Desnudos , Invasividad Neoplásica , Proteínas Nucleares/metabolismo , Fosforilación/efectos de los fármacos , Proteolisis/efectos de los fármacos , Bibliotecas de Moléculas Pequeñas , Factores de Transcripción de Dominio TEA , Neoplasias de la Lengua/inducido químicamente , Neoplasias de la Lengua/prevención & control , Factores de Transcripción/metabolismo , Activación Transcripcional , Proteínas Señalizadoras YAP
4.
Medicines (Basel) ; 7(6)2020 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-32630364

RESUMEN

Background: Superficial siderosis is a progressively disabling disease caused by recurrent subarachnoid hemorrhage with accumulation of hemosiderin in the surface of the central nervous system. Although a wide variety of conditions may cause superficial siderosis, approximately half of the cases are reported to be associated with a defect in the ventral spinal dura mater, in which case treatment entails surgical repair of the defect. Here, we report a case of superficial siderosis and report on our method to pinpoint the dural defect using a combination of magnetic resonance imaging (MRI) techniques. Methods and Results: A 74-year-old female presented suffering from hearing loss and progressive ataxia over a duration of seven years. A T2-weighted MRI study revealed hypointensity in the superficial areas of the central nervous system, leading to the diagnosis of superficial siderosis, and the presence of a fluid-filled collection in the anterior spinal canal of C7 to T10 suggested that a dural defect was the cause of the repeated hemorrhage. A balanced turbo field echo (BTFE) MRI sequence revealed possible dural defects at T1-T2 and T5-T6, and a dynamic improved motion-sensitized driven-equilibrium steady-state free precession (dynamic iMSDE SSFP) sequence revealed an irregular flow of cerebrospinal fluid through the dura at the T5-T6 level. The dural defect was confirmed and sutured through a minimal T5-T6 laminectomy without neurological consequences, and the patient reported mild improvement in gait one year after surgery. Conclusions: A combination of MRI sequences provided the necessary information to confidently perform minimal surgery to repair the dural defect. We recommend coupling a balanced steady-state free precession (SSFP) sequence to provide high resolution, high contrast images of anatomical structures and a dynamic iMSDE SSFP sequence to confirm cerebrospinal fluid motion through the defect.

5.
Psychol Trauma ; 12(S1): S49-S50, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32525365

RESUMEN

This paper discusses how positive emotions can help maintain and improve mental health during the COVID-19 outbreak, taking into account examples of social interaction and positive psychology research efforts in Japanese context. (PsycInfo Database Record (c) 2020 APA, all rights reserved).


Asunto(s)
Infecciones por Coronavirus/psicología , Emociones , Relaciones Interpersonales , Salud Mental , Neumonía Viral/psicología , Psicología Positiva , COVID-19 , Humanos , Japón , Pandemias
6.
Bioorg Med Chem Lett ; 30(1): 126744, 2020 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-31759851

RESUMEN

We carried out structure-activity relationship study on anti-cancer effects of naftopidil (1) and its metabolites, resulted in identification of 1-(4-hydroxy-2-methoxyphenyl)piperazin-1-yl)-3-(naphthalen-1-yloxy) propan-2-ol (2, HUHS190), a major human metabolite of 1, which exhibited the most selective toxicities between against normal and cancer cells (Table 1). 2 was more hydrophilic compared to 1, was enough to be prepared in high concentration solution of more than 100 µM in saline for an intravesical instillation drug. Moreover, serum concentration of 2 was comparable to that of 1, an oral preparation drug, after oral administration at 32 mg/kg (Fig. 3). Both of 1 and 2 showed broad-spectrum anti-cancer activities in vitro, for example, 1 and 2 showed inhibitory activity IC50 = 21.1 µM and 17.2 µM for DU145, human prostate cancer cells, respectively, and IC50 = 18.5 µM and 10.5 µM for T24 cells, human bladder cancer cells. In this study, we estimated anticancer effects of 2 in a bladder cancer model after intravesical administration similar to clinical cases. A single intravesical administration of 2 exhibited the most potent inhibitory activities among the clinical drugs for bladder cancers, BCG and Pirarubicin, without obvious side effects and toxicity (Fig. 4). Thus, HUHS190 (2) can be effective for patients after post-TURBT therapy of bladder cancer without side effects, unlike the currently available clinical drugs.


Asunto(s)
Antineoplásicos/uso terapéutico , Naftalenos/uso terapéutico , Piperazinas/uso terapéutico , Neoplasias de la Vejiga Urinaria/tratamiento farmacológico , Animales , Antineoplásicos/farmacología , Femenino , Humanos , Masculino , Ratones , Naftalenos/farmacología , Piperazinas/farmacología , Relación Estructura-Actividad
7.
Neuroophthalmology ; 43(2): 114-119, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31312236

RESUMEN

Ophthalmic and MRI evaluations of a 13-year-old boy who reported loss of visual acuity in his right eye demonstrated the presence of unilateral optic neuritis. After serological tests showed positivity for anti-aquaporin 4 antibody, he was diagnosed with neuromyelitis optica spectrum disorder. Encephalopathy and myelitis were not observed. Since his unilateral optic neuritis was considered to reflect mild disease activity, only follow-up observations were performed. Visual acuity and central scotoma improved 1 week after the first examination. In the absence of any specific treatments, good visual acuity has remained for 20 months, with no relapse of optic neuritis.

8.
Front Psychiatry ; 10: 932, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31998153

RESUMEN

Objective: Although family involvement in the treatment of obsessive-compulsive disorder (OCD) produces a reduction in OCD symptoms and has significant effects on global functioning, few studies have focused on family intervention as part of OCD treatment in Japan. This study aims to examine the feasibility and efficacy of the family-based exposure and response prevention (FERP) program for adult patients with OCD and their family members. Design: Randomized controlled pilot study. Methods: A total of 18 outpatients aged 18-65 years with a primary diagnosis of OCD and one family member of each patient were randomized to an intervention group or a control group (1:1). The intervention group received the FERP program, which consisted of 16 weekly face-to-face cognitive behavioral therapy (CBT) sessions, including eight joint sessions with family members, in addition to treatment-as-usual (TAU). The control group received TAU alone. The primary outcome was the alleviation of OCD symptoms, as measured by changes in the total Yale-Brown Obsessive Compulsive Scale (Y-BOCS) score from baseline to posttreatment. Analyses were provided on an intention-to-treat basis, and linear mixed models were used to test for significant group differences. Results: After 16 weeks, patients allocated to the FERP program showed improvement in OCD symptom severity, as measured by the total change score of the Y-BOCS (Hedges' g = -1.58), as compared to the control group. Two patients (22.2%) in the FERP group reached remission, and five patients (55.6%) in the FERP group achieved treatment response. Clinical global improvement measured by the FAS-SR scores, K6 scores, and CGI-S scores was also observed (Hedges' g = -1.35, -1.25, and -1.26, respectively) in the FERP group as compared to the control group. The dropout rate from the study was low (n = 2, 11.8%), and no adverse events were reported in the FERP group. Conclusion: Our results suggest that FERP may be an effective program for reducing patients' OCD symptoms. Clinical Trial Registration: www.umin.ac.jp/ctr/, identifier UMIN000021763.

9.
Psychol Psychother ; 91(4): 509-525, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-29528183

RESUMEN

OBJECTIVES: Emotion regulation utilizing positive emotion during negative emotional states might be one of the effective ways to alleviate depression and anxiety problems among people with emotional disorders. This study examined the psychometric properties and incremental validity of the Positive Emotion In Distress Scale (PEIDS), a newly developed self-report scale, in a sample of university students in Japan. DESIGN AND METHODS: To examine the psychometric properties of the PEIDS, the scale was completed by Japanese university students (396 men and 363 women; mean age of 19.92). Participants additionally answered the Emotion Regulation Questionnaire, Rumination and Reflection Questionnaire - Shorter Version, Affective Style Questionnaire, Positive and Negative Affective Schedule, and Hospital Anxiety and Depression Scale. The survey was conducted at two time points separated by 1 month to assess test-retest reliability and validity of the PEIDS. RESULTS: Exploratory and confirmatory factor analyses confirmed a one-factor structure. Reliability was confirmed by high internal consistency and test-retest stability; the convergent and discriminant validity was confirmed by correlations with related and unrelated variables. The results of hierarchical regression analyses demonstrated that positive emotion in distress might predict depression above and beyond the effect of baseline depression and other common emotion regulation strategies. CONCLUSIONS: The PEIDS showed acceptable reliability and validity within young adults and a non-clinical population in Japan. Further research will be needed to examine the effect of positive emotion among clinical populations. PRACTITIONER POINTS: Previous research suggests that positive emotions play a key role in recovery from depression and anxiety problems through some forms of psychotherapy. The Positive Emotion In Distress Scale (PEIDS) measures individual differences regarding the extent to which people can experience positive emotions in negative emotional states. Results suggested that the subjective rating of the ability to experience positive emotions in distress might alleviate depression prospectively but not anxiety problems. The effect of positive emotion in distress demonstrated to have beyond the effects of other emotion regulation strategies.


Asunto(s)
Afecto , Trastornos de Ansiedad/psicología , Trastorno Depresivo/psicología , Estudiantes/psicología , Adolescente , Adulto , Femenino , Humanos , Japón , Masculino , Escalas de Valoración Psiquiátrica , Psicometría , Psicoterapia/métodos , Análisis de Regresión , Reproducibilidad de los Resultados , Autoinforme , Índice de Severidad de la Enfermedad , Estrés Psicológico , Adulto Joven
10.
Case Rep Ophthalmol ; 9(3): 499-503, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30687070

RESUMEN

This report presents details on a 45-year-old male Japanese patient with chronic and refractory anterior uveitis associated with psoriasis vulgaris who was administered certolizumab pegol (CZP), which is an anti-tumor necrosis factor alpha (TNF-α) monoclonal antibody. Although CZP has only been formally approved for rheumatoid arthritis treatment in Japan, a clinical trial allowed us to assess CZP effectiveness in this patient. The grade 3+ anterior chamber inflammation (for both the cells and flare) observed at baseline improved to grade 0 at 3 months post-treatment. Dermatologically, the psoriasis area severity index (PASI) score was 25.4, while the body surface area (BSA) was 88% at baseline. At 3 months after treatment, the scores improved to 2.8 for PASI and less than 1% for BSA. After the treatment, remission has lasted for at least 9 months. No adverse events were seen during the CZP treatment. These findings suggest that CZP could be an effective therapeutic alternative in some refractory anterior uveitis patients with psoriasis vulgaris.

11.
J. inborn errors metab. screen ; 6: 170019, 2018. tab
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1090961

RESUMEN

Abstract To reveal the associated factors of quality of life (QoL) in children with inborn errors of metabolism (IEM), their siblings, and their primary caregivers and partners, we conducted an anonymous questionnaire survey in Japan. Descriptive, correlation, and multiple regression analyses were performed. Fifty-six children with IEM, 35 siblings, 143 primary caregivers, and 86 partners completed our questionnaires. There were significant positive correlations between higher QoL in children with IEM and lower disease influence (r »0.46) and higher perceived emotional support (r »0.67). We could not find any associated factor of siblings' QoL. Lower parental distress, higher family empowerment, and higher household income contributed to higher QoL in primary caregivers (adjusted R2 » 0.636). Higher household income, lower anxiety about childrearing, and higher satisfaction in the relationship with the child and entire family contributed to higher QoL of partners (adjusted R2 » 0.398). We concluded that developing effective interventions to improve QoL is needed for the entire family in future outpatient settings.

12.
Food Chem ; 224: 398-406, 2017 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-28159286

RESUMEN

Red koji, which refers the solid culture grown koji mold on the steamed rice, is one of the ingredients of Asian fermented foods including the Japanese spirit shochu. This study was aimed at elucidating the characteristic flavor and key volatile compounds of red koji-shochu as well as the mechanism of their formation. Sensory evaluation showed that red koji-shochu has the distinctive flavors cheese, sour, milky, and oily. Fifteen key volatile compounds of red koji-shochu were identified by gas chromatography-mass spectrometry and high-performance liquid chromatography, and by comparison between red koji-shochu and white koji-shochu, as another typical shochu. The mash analysis revealed that ketone compounds and short-chain acids derive from red koji. Furthermore, although other key compounds were produced by yeast, it is highly likely that their concentrations were affected directly or indirectly by the high activities of protease and lipase in red koji.


Asunto(s)
Fermentación , Monascus/metabolismo , Compuestos Orgánicos Volátiles/análisis , Acetatos/análisis , Adulto , Cromatografía Líquida de Alta Presión , Ésteres/análisis , Femenino , Manipulación de Alimentos , Microbiología de Alimentos , Cromatografía de Gases y Espectrometría de Masas , Humanos , Lipasa/metabolismo , Masculino , Persona de Mediana Edad , Odorantes/análisis , Oryza/microbiología , Espectrometría de Masas en Tándem , Gusto , Adulto Joven
14.
JIMD Rep ; 33: 1-10, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-27344649

RESUMEN

To assess the quality of life (QoL) of children in Japan with inborn errors of metabolism (IEM) as well as of their parents, we reviewed 23 previous studies published in Japanese and 1 published in English, focusing on the difficulties they encounter in daily life, the factors associated with these difficulties, and their QoL. We divided the difficulties and associated factors into three developmental stages. At the infant stage, individuals with IEM tend to be at high risk of hypercatabolism. Their parents suffered anxiety and distress because of the child's diet therapy and regarded the parents' support group as an essential presence, particularly given that IEM is a rare disease. At the school-age stage, as their sphere of social relationships expanded, children with IEM became nervous about being compared with healthy children of their own age because of their diet therapy. At the adolescence-to-adulthood stage, the children suffered medically, economically, and socially. Even in the absence of any IEM symptoms, the children's QoL was affected by the demands associated with the metabolic disorder, such as diet and treatment. The psychological health of their caregivers was also poor. To improve the QoL of children with IEM and of their parents, future comprehensive quantitative and qualitative studies of their QoL and of their subjective support needs are required. Additionally, the specific factors related to the QoL of such individuals need to be explored in large population-based statistical studies.

15.
Int J Nurs Sci ; 4(1): 38-45, 2017 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-31406716

RESUMEN

OBJECTIVES: The families of these children experience distress both at the time of diagnosis and afterward. A top priority is to understand family empowerment, family function, and family members' quality of life (QoL) and to effectively support these families in Japan. The objective of this study was to assess the actual conditions of families living with children having DDs and to explore the factors associated with family empowerment and parents' QoL. METHODS: We surveyed ninety-three parents (78 mothers, 15 fathers) from 78 families which lived with children with DDs in the capital region of Japan. We assessed two main outcomes using the Japanese versions of the following instruments: Family Empowerment Scale (FES), World Health Organization Quality of Life 26 (WHOQOL26), and other six outcomes. Correlation and multiple regression analyses were conducted. RESULTS: No medication, cooperation with child rearing, assistance from a developmental support center, solved problems related to child rearing, and higher scores in Problem Solving contributed to higher FES scores. Higher WHOQOL26 scores were related to being a full-time housewife, higher self-esteem, no developmental support, a broad emotional support network, higher scores in Problem Solving and Role Function, and lower scores in Affective Reaction and General Function. CONCLUSIONS: We revealed that family empowerment and QoL of parents rearing children with DDs in Japan were affected by various subscales of family function and other family attributes. Effective interventions for improving family empowerment and QoL should be researched in the future.

16.
Waste Manag ; 48: 540-547, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26597373

RESUMEN

This study was conducted using a web-based survey and bidding game in contingent valuation method to evaluate consumer preferences for packaging with less material. Results revealed that people who live in a municipality implementing unit-based pricing of waste have a higher willingness-to-pay (WTP) for a product. Economic instruments can affect the purchase of products with reduced packaging because a higher disposal cost increases the attractiveness of source reduction. However, unit-based pricing combined with plastic separation for recycling reduces WTP. This result suggests that recycling policy weakens the effect of economic instruments on source reduction of waste.


Asunto(s)
Comportamiento del Consumidor , Reciclaje/economía , Eliminación de Residuos/métodos , Adulto , Anciano , Ciudades , Conservación de los Recursos Naturales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Modelos Económicos , Modelos Estadísticos , Plásticos , Políticas , Probabilidad , Embalaje de Productos , Análisis de Regresión , Factores Socioeconómicos , Encuestas y Cuestionarios , Adulto Joven
17.
Food Chem ; 145: 892-902, 2014 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-24128561

RESUMEN

Maillard reaction peptides (MRPs) contribute to taste, aroma, colour, texture and biological activity. However, peptide degradation or the cross-linking of MRPs in the Maillard reaction has not been investigated clearly. A peptide of LEKFD, a part of ß-lactoglobulin, was heated at 110 °C for 24h with glucose and the reaction products were analysed by HPLC with ODS, ESI-MS, ESI-MS/MS and HPLC with gel-filtration column and DAD detector. In the HPLC fractions, an imminium ion of LEK*FD, a pyrylium ion or a hydroxymethyl furylium ion of LEK*FD, and KFD and EK were detected by ESI-MS. Therefore, those products may be produced by the Maillard reaction. The molecular orbital of glycated LEKFD at the lysine epsilon-amino residue with Schiff base form was calculated by MOPAC. HPLC with gel-filtration column showed cross-linking and degradation of peptides.


Asunto(s)
Glicoproteínas/química , Lactoglobulinas/química , Reacción de Maillard , Modelos Moleculares , Oligopéptidos/química , Fragmentos de Péptidos/química , Animales , Bovinos , Cromatografía en Gel , Cromatografía Líquida de Alta Presión , Dipéptidos/análisis , Dipéptidos/química , Técnicas Electroquímicas , Glicoproteínas/análisis , Glicosilación , Calor , Lactoglobulinas/análisis , Oligopéptidos/análisis , Fragmentos de Péptidos/análisis , Conformación Proteica , Estabilidad Proteica , Proteolisis , Bases de Schiff/análisis , Bases de Schiff/química , Espectrometría de Masa por Ionización de Electrospray , Espectrometría de Masas en Tándem
18.
J Sci Food Agric ; 91(12): 2259-64, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-21547923

RESUMEN

BACKGROUND: Medicinal plants have been used to treat various diseases since ancient times. Their specific activities, such as antioxidant, anti-inflammatory and anti-cancer, have been studied intensively. In particular, plants grown in Vietnam have attracted considerable attention among food chemists as ideal sources of natural medicinal chemicals. RESULTS: The methanol extracts from three edible Vietnamese-grown plants, Tram, Voi and Gac, tested with the DPPH assay showed antioxidant activities of 91.7 ± 0.4, 63.4 ± 0.7 and 3.7 ± 0.1% respectively. The malonaldehyde/gas chromatography assay also revealed strong antioxidant activity in Tram and Voi at a level of 25 µg mL(-1) (95.5 ± 0.3 and 78.5 ± 1.4% respectively). These results were confirmed by the thiobarbituric acid assay. The antioxidant activities correlated positively with the level of total phenolics in all plants. Tram exhibited dose response-related lipoxygenase-inhibitory activity, with values of 74.2 ± 3.1% at 5 µg mL(-1) , 62.0 ± 0% at 0.5 µg mL(-1) and 3.0 ± 1.5% at 0.05 µg mL(-1) . Conversely, Voi and Gac showed negative anti-lipoxygenase activity. CONCLUSION: The antioxidant/anti-inflammatory activities and total phenolic contents of the three edible plants grown in Vietnam revealed that they are good sources of supplements for human health.


Asunto(s)
Antiinflamatorios no Esteroideos/farmacología , Antioxidantes/farmacología , Descubrimiento de Drogas , Momordica/química , Fenoles/análisis , Extractos Vegetales/farmacología , Syzygium/química , Antiinflamatorios no Esteroideos/química , Antioxidantes/química , Fraccionamiento Químico , Flores/química , Frutas/química , Inhibidores de la Lipooxigenasa/química , Inhibidores de la Lipooxigenasa/farmacología , Medicina Tradicional de Asia Oriental , Metanol/química , Fenoles/farmacología , Extractos Vegetales/química , Solventes/química , Verduras/química , Vietnam
19.
Biosci Biotechnol Biochem ; 74(10): 1981-6, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20944393

RESUMEN

High hydrostatic pressure (HHP) was applied to grated ginger in order to inactivate quality-degrading enzymes in a non-thermal manner. The effects of HHP treatment on the flavor and the color of the grated ginger were investigated just after treatment and during storage. After HHP treatment (400 MPa, 5 min), geraniol dehydrogenase (GeDH) was inactivated to less than 5%, but the activity of polyphenol oxidase (PPO) was reduced only to 37%. Heat treatment (100 °C, 10 min) inactivated GeDH to 43% and PPO to about 10%. In storage, the reduction of geranial, neral, and citronellal to the corresponding alcohols was observed in the untreated and the heat-treated ginger, while it was not in the HHP-treated grated ginger. In the HHP-treated sample, terpene aldehydes almost disappeared without the formation of the corresponding alcohols. Browning was not observed immediately after HHP treatment, while it was complete in the heat-treated sample. The color change during storage appeared to reflect the residual activity of PPO.


Asunto(s)
Manipulación de Alimentos/métodos , Pigmentación , Gusto , Zingiber officinale/química , Catecol Oxidasa/metabolismo , Activación Enzimática , Zingiber officinale/enzimología , Presión Hidrostática/efectos adversos , Reacción de Maillard , Volatilización
20.
J Occup Health ; 52(4): 209-15, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20551583

RESUMEN

OBJECTIVES: The effects of an oral rehydration solution (ORS) on fatigue were studied in workers engaged in manual work during the summer. METHODS: One hundred and fifty-three workers engaged in loading cargo onto aircraft at Tokyo International Airport who consented to participate in the study were the subjects. The study was carried out on two summer days with fine weather during the daytime shift. The subjects were randomly divided into two groups: with one group restricted to ORS intake and the other group having free-choice of their favorite drink (FAD) in a randomized crossover study. The subjects were asked about the amount of beverage that they consumed and the type of FAD that they chose on the days of the survey. The effects of the ORS and the FAD were compared using a visual analogue scale (VAS) to determine the degree of fatigue experienced immediately after completing work. RESULTS: The average wet bulb globe temperature (WBGT) on the survey days was 30 degrees C. The beverage intake during work was 1,000 ml for most participants and the most commonly chosen types of FAD were tea and coffee. The fatigue VAS was significantly lower on the ORS intake days than on the FAD intake days (50.0 +/- 18.3 vs. 53.9 +/- 16.3). CONCLUSIONS: The results of this study suggest that the intake of ORS during outdoor work in a hot environment would be effective for preventing industrial accidents and heat stroke. It is important to select an appropriate drink to ensure adequate intake of water and electrolytes.


Asunto(s)
Fatiga/prevención & control , Fluidoterapia , Trastornos de Estrés por Calor/prevención & control , Calor/efectos adversos , Exposición Profesional/efectos adversos , Soluciones para Rehidratación/uso terapéutico , Adulto , Bebidas , Café , Estudios Cruzados , Fatiga/diagnóstico , Fatiga/terapia , Femenino , Trastornos de Estrés por Calor/diagnóstico , Trastornos de Estrés por Calor/terapia , Humanos , Masculino , , Tokio , Agua
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