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1.
J Pers Assess ; 106(2): 145-155, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37417686

RESUMO

We re-oriented the HEXACO personality dimensions to approximate the Big Five, using two measures of the Big Five as targets in a derivation sample and then in cross-validation samples. The HEXACO approximations of Big Five Agreeableness represented blends of HEXACO Agreeableness, Emotionality, and Honesty-Humility. The HEXACO approximations of Big Five Neuroticism represented blends of Emotionality with low Agreeableness and low Extraversion. The residual sixth dimension, unrelated to the Big Five, contrasted Honesty-Humility with HEXACO Agreeableness. We then examined, in additional samples, some correlates of the original and re-rotated HEXACO dimensions. In the original HEXACO factor space, Honesty-Humility was the strongest correlate of unethical behaviors (selfishness and cheating), participant age, and "assumed similarity" to a friend or partner. Upon re-rotation of the HEXACO factors, associations involving these variables were divided between Big Five Agreeableness and the residual sixth dimension. Sex differences were mainly associated with Emotionality but after re-rotation of the HEXACO factors were divided between Big Five Agreeableness and Neuroticism. We discuss the relative merits of the original and Big Five-targeted HEXACO dimensions with reference to the practical utility of Big Five Agreeableness and Neuroticism and the simplicity and theoretical interpretability of the original HEXACO factors.


Assuntos
Transtornos da Personalidade , Personalidade , Feminino , Humanos , Masculino , Neuroticismo , Inventário de Personalidade
2.
Sensors (Basel) ; 22(12)2022 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-35746159

RESUMO

It is necessary to convert to automation in a tomato hydroponic greenhouse because of the aging of farmers, the reduction in agricultural workers as a proportion of the population, COVID-19, and so on. In particular, agricultural robots are attractive as one of the ways for automation conversion in a hydroponic greenhouse. However, to develop agricultural robots, crop monitoring techniques will be necessary. In this study, therefore, we aimed to develop a maturity classification model for tomatoes using both support vector classifier (SVC) and snapshot-type hyperspectral imaging (VIS: 460-600 nm (16 bands) and Red-NIR: 600-860 nm (15 bands)). The spectral data, a total of 258 tomatoes harvested in January and February 2022, was obtained from the tomatoes' surfaces. Spectral data that has a relationship with the maturity stages of tomatoes was selected by correlation analysis. In addition, the four different spectral data were prepared, such as VIS data (16 bands), Red-NIR data (15 bands), combination data of VIS and Red-NIR (31 bands), and selected spectral data (6 bands). These data were trained by SVC, respectively, and we evaluated the performance of trained classification models. As a result, the SVC based on VIS data achieved a classification accuracy of 79% and an F1-score of 88% to classify the tomato maturity into six stages (Green, Breaker, Turning, Pink, Light-red, and Red). In addition, the developed model was tested in a hydroponic greenhouse and was able to classify the maturity stages with a classification accuracy of 75% and an F1-score of 86%.


Assuntos
COVID-19 , Solanum lycopersicum , Humanos , Imagens, Psicoterapia
3.
Scand J Psychol ; 62(6): 887-894, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34562027

RESUMO

The HEXACO personality factors of Agreeableness-versus-Anger (A) and Honesty-Humility (H) are interpreted as two complementary aspects of reciprocal altruistic tendency. Here we consider several ways of representing the positive associations between the defining traits of A and of H, through common factor analysis of self-report HEXACO Personality Inventory-Revised (HEXACO-PI-R) facet scale scores (N ≈ 111,000). We describe orthogonal solutions that differ in the extent to which H facets show secondary loadings on A (and vice versa), as well as an oblique solution compatible with a higher-order "cooperativeness" factor. We discuss the psychological plausibility of these solutions, and we review research showing differential associations of several phenomena or outcomes with A and H. We conclude that the optimal representation of A/H trait associations is not yet known but that the value of separate A and H factor scales is well established.


Assuntos
Ira , Personalidade , Altruísmo , Análise Fatorial , Humanos , Inventário de Personalidade
4.
J Pers ; 88(6): 1075-1090, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32394462

RESUMO

OBJECTIVE: We examined sex differences in the HEXACO Personality Inventory-Revised (HEXACO-PI-R) factor- and facet-level scales and the associations of national sex differences in those scales with national characteristics such as wealth and gender equality. METHOD: HEXACO-PI-R self-reports were collected online from persons in 48 countries (N = 347,192). RESULTS: (1) Women averaged substantially higher than men in Emotionality and in Honesty-Humility, with (sample-unweighted) mean differences across countries of d = 0.84 and d = 0.37, respectively; (2) the HEXACO-PI-R factor scales showed a rather large multivariate sex difference (D > 1 in most countries), about 19% larger than found in similar samples with the Big Five personality factors, (3) some facet scales belonging to the same factor showed widely varying sex differences, (4) national-level sex differences in Emotionality were larger in wealthy and gender-egalitarian countries, replicating previous counterintuitive findings, but such a tendency was not clearly observed for Honesty-Humility, and (5) within several English-speaking countries, sex differences in Emotionality showed comparatively little ethnic variation, suggesting that societal characteristics may influence the size of sex differences in Emotionality. CONCLUSION: The HEXACO model of personality structure provides some new insights in understanding sex differences in personality at the individual and national levels.


Assuntos
Transtornos da Personalidade , Caracteres Sexuais , Feminino , Humanos , Masculino , Personalidade , Inventário de Personalidade , Autorrelato
5.
J Pers Assess ; 102(5): 714-726, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31184949

RESUMO

The HEXACO Personality Inventory-Revised (HEXACO-PI-R) has become one of the most heavily applied measurement tools for the assessment of basic personality traits. Correspondingly, the inventory has been translated to many languages for use in cross-cultural research. However, formal tests examining whether the different language versions of the HEXACO-PI-R provide equivalent measures of the 6 personality dimensions are missing. We provide a large-scale test of measurement invariance of the 100-item version of the HEXACO-PI-R across 16 languages spoken in European and Asian countries (N = 30,484). Multigroup exploratory structural equation modeling and confirmatory factor analyses revealed consistent support for configural and metric invariance, thus implying that the factor structure of the HEXACO dimensions as well as the meaning of the latent HEXACO factors is comparable across languages. However, analyses did not show overall support for scalar invariance; that is, equivalence of facet intercepts. A complementary alignment analysis supported this pattern, but also revealed substantial heterogeneity in the level of (non)invariance across facets and factors. Overall, results imply that the HEXACO-PI-R provides largely comparable measurement of the HEXACO dimensions, although the lack of scalar invariance highlights the necessity for future research clarifying the interpretation of mean-level trait differences across countries.


Assuntos
Inventário de Personalidade/normas , Psicometria/normas , Adulto , Comparação Transcultural , Feminino , Humanos , Masculino
6.
J Pers ; 87(6): 1103-1118, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30693514

RESUMO

OBJECTIVE: To examine the associations of religiousness with personality characteristics. METHOD: We obtained self-ratings of religiousness along with self-reports on the HEXACO Personality Inventory-Revised in a sample of nearly 200,000 online respondents. Respondents also indicated their religious affiliation, religiousness of upbringing, and political orientation; a subset of the respondents also indicated attitudes about immigration and foreign aid. RESULTS: Religiousness showed weak associations (|r|s < 0.15) with several HEXACO factors but somewhat stronger associations with the Fairness and Altruism facets (both rs > 0.20). On those facets, participants with the highest religiousness self-rating (7 on a 1-to-7 scale) averaged about 1 SD higher than did participants with the lowest religiousness self-rating. In addition, religiousness was negatively related to the Unconventionality facet among persons whose upbringing was very religious, but not among persons whose upbringing was very nonreligious. Religiousness/personality associations were generally quite similar within different religious affiliations (Hinduism, Islam, Judaism, Buddhism, and several branches of Christianity) but were stronger within relatively religious countries than within nonreligious countries. Despite the positive association of religiousness with the Altruism facet, religiousness was uncorrelated with pro-out-group attitudes (i.e., favoring multicultural immigration and foreign aid). CONCLUSION: The findings advance our understanding of religiousness/personality associations.


Assuntos
Inventário de Personalidade , Personalidade , Religião e Psicologia , Adulto , Altruísmo , Atitude , Feminino , Humanos , Masculino
7.
J Pers Assess ; 101(6): 567-573, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-29630400

RESUMO

We examined the ability of several Big Five measures to account for variance in HEXACO Personality Inventory-Revised (HEXACO-PI-R) scales and vice versa. Some Big Five measures accounted for more variance in HEXACO Honesty-Humility than did others, but these differences were largely offset by opposing differences in accounting for variance in HEXACO Agreeableness and Emotionality. As a consequence, the various Big Five measures showed similarly large overall deficiencies in accounting for HEXACO scale variance, relative to variance accounted for in Big Five scales by HEXACO-PI-R scales. The results imply that the use of Big Five instead of HEXACO scales entails a large loss of information, about equal to the amount that would be lost by discarding one of the Big Five scales.


Assuntos
Modelos Psicológicos , Inventário de Personalidade/normas , Personalidade , Adulto , Análise Fatorial , Feminino , Humanos , Masculino , Transtornos da Personalidade/diagnóstico , Psicometria , Reprodutibilidade dos Testes
8.
Biosci Biotechnol Biochem ; 81(10): 1883-1890, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28831862

RESUMO

In the current study, we examined the antioxidant and skin-whitening properties of Prunus mume extract (PME). The ability of PME to scavenge 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals was investigated in vitro. At a concentration of 1000 µg/mL, PME neutralized >45% free radical activity. Cell viability assessment with the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay revealed that at concentrations <1500 µg/mL, PME does not exert cytotoxic effects on murine B16 melanoma (B16) cells. Morphological analysis disclosed that melanin production is inhibited in B16 cells treated with 250 nM α-melanocyte-stimulating hormone (α-MSH) and PME. We conclude that fruit extracts of P. mume exert a skin-whitening effect by inhibiting melanin production via regulation of melanogenesis-associated protein expression in melanocytes.


Assuntos
Sequestradores de Radicais Livres/farmacologia , Melaninas/biossíntese , Melanoma Experimental/patologia , Extratos Vegetais/farmacologia , Prunus/química , alfa-MSH/farmacologia , Animais , Compostos de Bifenilo/química , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Sequestradores de Radicais Livres/química , Sequestradores de Radicais Livres/isolamento & purificação , Melanossomas/efeitos dos fármacos , Melanossomas/metabolismo , Camundongos , Estresse Oxidativo/efeitos dos fármacos , Picratos/química , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação
9.
J Pers Assess ; 99(2): 192-203, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-27494804

RESUMO

Using self- and observer reports on the Personality Inventory for DSM-5 (PID-5) and the HEXACO Personality Inventory-Revised (HEXACO-PI-R), we identified for each inventory several trait dimensions (each defined by both self- and observer reports on the facet-level scales belonging to the same domain) and 2 source dimensions (each defined by self-reports or by observer reports, respectively, on all facet-level scales). Results (N = 217) showed that the source dimensions of the PID-5 were very large (much larger than those of the HEXACO-PI-R), and suggest that self-report (or observer report) response styles substantially inflate the intercorrelations and the alpha reliabilities of the PID-5 scales. We discuss the meaning and the implications of the large PID-5 source components, and we suggest some methods of controlling their influence.


Assuntos
Manual Diagnóstico e Estatístico de Transtornos Mentais , Transtornos da Personalidade/diagnóstico , Inventário de Personalidade , Personalidade , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Autorrelato
10.
Pers Soc Psychol Rev ; 18(2): 139-52, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24577101

RESUMO

We review research and theory on the HEXACO personality dimensions of Honesty-Humility (H), Agreeableness (A), and Emotionality (E), with particular attention to the following topics: (1) the origins of the HEXACO model in lexical studies of personality structure, and the content of the H, A, and E factors in those studies; (2) the operationalization of the H, A, and E factors in the HEXACO Personality Inventory-Revised; (3) the construct validity of self-reports on scales measuring the H factor; (4) the theoretical distinction between H and A; (5) similarity and assumed similarity between social partners in personality, with a focus on H and A; (6) the extent to which H (and A and E) variance is represented in instruments assessing the "Five-Factor Model" of personality; and (7) the relative validity of scales assessing the HEXACO and Five-Factor Model dimensions in predicting criteria conceptually relevant to H, A, and E.


Assuntos
Inventário de Personalidade , Personalidade , Pesquisa Comportamental , Emoções , Humanos , Modelos Psicológicos , Reprodutibilidade dos Testes
11.
J Pers ; 80(1): 113-34, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21446948

RESUMO

The construct of Oddity was examined in relation to the dimensions of normal personality variation and a dimension of schizotypy and dissociation. In 2 studies involving samples of community adults (N = 409) and college students (N = 378), Oddity-as operationalized in terms of perceived strangeness or eccentricity-was found to be moderately related to a Schizotypy/Dissociation factor and also to factors of normal personality variation, particularly Openness to Experience. The modest loading of Oddity on the Schizotypy/Dissociation factor, along with the somewhat stronger projection of Oddity within the space of normal personality dimensions, indicates that the Schizotypy/Dissociation factor should not be interpreted as a dimension of Oddity. The interpretation of the Schizotypy/Dissociation factor is discussed, as are the implications of these results for proposed dimensional models of personality disorders.


Assuntos
Transtornos Dissociativos/psicologia , Relações Interpessoais , Personalidade , Transtorno da Personalidade Esquizotípica/psicologia , Adulto , Feminino , Humanos , Masculino , Análise de Regressão , Inquéritos e Questionários , Adulto Jovem
12.
J Pers ; 80(1): 81-111, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21241310

RESUMO

There is considerable scientific interest in the psychological correlates of pro-environmental behaviors. Much research has focused on demographic and social-psychological characteristics of individuals who consistently perform such actions. Here, we report the results of 2 studies in which we explored relations between broad personality traits and pro-environmental actions. Using a wide variety of behavior and personality measures, we consistently found moderate positive relations between Openness to Experience and pro-environmental activities in both a community sample (Study 1: N = 778) and an undergraduate student sample (Study 2: N = 115). In Study 2, we showed that the effect of Openness on pro-environmental behaviors was fully mediated by individuals' environmental attitudes and connection to nature. Our findings suggest that high levels of aesthetic appreciation, creativity, and inquisitiveness, but not personality traits associated with altruism, may have motivated the performance of pro-environmental actions among our respondents. Implications for intervention development are discussed.


Assuntos
Altruísmo , Conservação dos Recursos Naturais , Recuperação e Remediação Ambiental , Individualidade , Relações Interpessoais , Personalidade/classificação , Adulto , Consciência , Feminino , Humanos , Masculino , Comportamento Social , Valores Sociais , Adulto Jovem
13.
Biochim Biophys Acta ; 1804(4): 745-51, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19945547

RESUMO

This study was conducted to investigate the amount of CLA synthesized endogenously by rat mammary tissues in response to TVA (a precursor for cis-9, trans-11 CLA endogenous synthesis) treatment as well as the differences in the protein expression of genes encoding the biosynthesis of CLA in rat mammary tissue and mouse mammary gland epithelia cells (HC11). Treatment with TVA resulted in improved CLA productivity. Furthermore, 2-DE revealed two spots in samples of mammary tissues and one spot in samples of mammary gland epithelia cells (HC11) that were consistently altered in the TVA treatment groups when compared with the control group (non-fatty acid). The mRNA expression patterns of three of the proteins (PDI, PRDX2, LAMR1), as measured by real-time PCR, were similar to the pattern of protein abundance. In addition, the expression of SCD mRNA in the mammary tissue of rats and HC11 cell treated with TVA was higher than in the control group. Our results suggest that the identified proteins may be related to CLA biosynthesis in mammary tissue.


Assuntos
Lactação/metabolismo , Ácidos Linoleicos Conjugados/biossíntese , Glândulas Mamárias Animais/metabolismo , Sequência de Aminoácidos , Animais , Linhagem Celular , Eletroforese em Gel Bidimensional , Células Epiteliais/efeitos dos fármacos , Células Epiteliais/metabolismo , Feminino , Glândulas Mamárias Animais/citologia , Glândulas Mamárias Animais/efeitos dos fármacos , Redes e Vias Metabólicas , Camundongos , Modelos Biológicos , Dados de Sequência Molecular , Ácidos Oleicos/farmacologia , Peroxirredoxinas/genética , Peroxirredoxinas/metabolismo , Reação em Cadeia da Polimerase , Isomerases de Dissulfetos de Proteínas/genética , Isomerases de Dissulfetos de Proteínas/metabolismo , Proteômica , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Ratos , Ratos Sprague-Dawley , Receptores de Laminina/genética , Receptores de Laminina/metabolismo , Proteínas Ribossômicas/genética , Proteínas Ribossômicas/metabolismo , Espectrometria de Massas por Ionização por Electrospray , Espectrometria de Massas em Tandem
14.
Biochemistry (Mosc) ; 76(4): 423-6, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21585317

RESUMO

Glutathione (GSH) is an abundant nonprotein thiol that plays numerous roles within the cell. Previously, we showed that Lactobacillus salivarius has the capacity to mount a glutathione-mediated acid-tolerance response. In the present work we provide evidence of a requirement for GSH by Lactobacillus reuteri and have studied the role of GSH during cell growth. Medium supplementation with 0.5 mM GSH as the sole sulfur source enhanced cell growth, resulting in an increase in glucose consumption, and increased cell GSH and protein contents compared with levels seen in the absence of supplementation. Moreover, L. reuteri showed enhanced amino acid consumption when grown with 0.5 mM GSH. These findings indicate that glutathione is a nutrient for bacterial growth.


Assuntos
Glutationa/metabolismo , Limosilactobacillus reuteri/crescimento & desenvolvimento , Aminoácidos/metabolismo , Proteínas de Bactérias/metabolismo , Meios de Cultura , Técnicas de Cultura , Glucose/metabolismo , Limosilactobacillus reuteri/metabolismo
15.
Curr Opin Psychol ; 40: 51-55, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33011676

RESUMO

We review research on personality/religiousness associations, integrating earlier meta-analyses with recent large-sample online studies. We find that general religiousness shows small positive associations with broad personality factors (e.g. HEXACO Honesty-Humility, Big Five Agreeableness, Conscientiousness) and somewhat stronger positive associations with narrower personality traits involving prosocial tendencies (e.g. altruism, fairness, forgivingness). The link between religiousness and prosociality appears not to be an artifact of self-report method variance. Religious fundamentalism and spirituality show negative and positive associations, respectively, with the Openness factor of personality. Religiousness/personality associations tend to be weak in relatively non-religious countries but moderately strong in highly religious countries. The direction of causal influence between personality and religiousness is not yet clear. Religiousness shows modest negative associations with IQ and appears to be somewhat negatively related to scientific thinking.


Assuntos
Personalidade , Espiritualidade , Altruísmo , Humanos , Transtornos da Personalidade , Religião
16.
Front Psychiatry ; 12: 637029, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34122172

RESUMO

Background: In the clinical field, anger has generally been studied in terms of aggressive behavior. However, in Asians, anger suppression is more common than anger expression. Hwabyung is a culture-related anger syndrome in Korea and is known to occur due to the continued repression of anger. Investigating Hwabyung should lead to a better understanding of the multiple dimensions of anger. To explore Hwabyung patients' experiences and perspectives, a meta-aggregation approach was used to conduct a systematic review and a qualitative synthesis. Methods: A systematic search was conducted in MEDLINE/PubMed, EMBASE, Allied and Complementary Medicine Database (AMED), Cumulative Index to Nursing and Allied Health Literature (CINAHL), PsycARTICLES, and four Korean databases [Korean Medical Database (KMbase), Korean Studies Information Service System (KISS), National Digital Science Library (NDSL), and Oriental Medicine Advanced Searching Integrated System (OASIS)] in September 2020. Studies were included if they collected and analyzed qualitative data from Hwabyung patients. Qualitative research findings on the experiences and perspectives of Hwabyung patients in Korea were critically appraised and synthesized using the Joanna Briggs Institute methodology. Results: Seven eligible studies were included. The findings from those studies (i.e., theme or subtheme of qualitative research) were aggregated into categories (a group of similar findings) and synthesized findings (a group of categorized findings). Ultimately, 116 findings were aggregated into 15 categories. Finally, four synthesized findings were derived from the 15 categories: (i) anger arousal, (ii) blame, (iii) uncontrollable physical and emotional symptoms, and (iv) compromise and temporary coping. Conclusions: Patients with Hwabyung experience chronic anger through the complex cognitive processes involved in blame. Hwabyung negatively affects patients' physical, psychological, and social functions. Because Hwabyung patients feel as if they are losing control, due to emotional dysregulation and physical symptoms, professional support should be provided to facilitate their coping strategies. Further studies on Hwabyung can serve as a new model of pathological anger.

17.
Anal Bioanal Chem ; 396(1): 535-9, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19813004

RESUMO

This paper describes a simple new approach toward improving resolution of two-dimensional (2-D) protein gels used to explore the mammalian proteome. The method employs sample prefractionation using solution-phase isoelectric focusing (IEF) to split the mammalian proteome into well-resolved pools. As crude samples are thus prefractionated by pI range, very-narrow-pH-range 2-D gels can be subsequently employed for protein separation. Using custom pH partition membranes and commercially available immobilized pH gradient (IPG) strips, we maximized the total separation distance and throughput of seven samples obtained by prefractionation. Both protein loading capacity and separation quality were higher than the values obtained by separation of fractionated samples on narrow-pH-range 2-D gels; the total effective IEF separation distance was ~82 cm over the pH range pH 3-10. This improved method for analyzing prefractionated samples on narrow-pH-range 2-D gels allows high protein resolution without the use of large gels, resulting in decreased costs and run times.


Assuntos
Proteínas/química , Proteômica , Linhagem Celular Tumoral , Eletroforese em Gel Bidimensional , Géis , Humanos , Concentração de Íons de Hidrogênio , Transição de Fase , Proteínas/análise , Força Próton-Motriz , Soluções
18.
Biochemistry (Mosc) ; 75(4): 460-5, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20618135

RESUMO

We report the acid tolerance response and changes in the level of protein expression of probiotic Lactobacillus reuteri subjected to transient (1.5 h) acid stress at pH 3.0. Sixteen acid-responsive proteins were identified by peptide mass fingerprinting including members of five broad functional categories: metabolism, transcription/translation, DNA replication/repair, transport and binding proteins, and pH homeostasis and stress responses. This work can provide some new and relevant information on the inducible mechanisms underlying the capacity of probiotic L. reuteri to tolerate acid stress.


Assuntos
Limosilactobacillus reuteri/metabolismo , Proteoma/metabolismo , Eletroforese em Gel Bidimensional , Concentração de Íons de Hidrogênio , Limosilactobacillus reuteri/efeitos dos fármacos , Probióticos/metabolismo , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz
19.
Biotechnol Lett ; 32(7): 969-72, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20349113

RESUMO

Lactobacillus salivarius, a probiotic bacterium, encounters acidic conditions in its passage through the gastrointestinal tract of human and animal hosts. We studied the effect of a rapid downshift in extracellular pH from 6.5 to 4 on cell growth. The maximum growth rate was higher in low pH medium with glutathione supplementation than without. Cells developed a GSH-mediated acid-tolerance response and, when grown with 0.5 mM GSH, reached a higher final density than with other conditions. These findings suggest that the increased growth rate is caused by uptake of GSH which acts as a nutrient source as well as having protective functions, allowing for continued growth.


Assuntos
Ácidos/toxicidade , Glutationa/metabolismo , Lactobacillus/efeitos dos fármacos , Lactobacillus/fisiologia , Probióticos , Estresse Fisiológico , Proteínas de Bactérias/análise , Biomassa , Meios de Cultura/química , Humanos , Lactobacillus/química , Lactobacillus/crescimento & desenvolvimento
20.
J Pers Assess ; 92(2): 168-74, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20155566

RESUMO

We investigated the psychometric properties of the Oregon Vocational Interest Scales (ORVIS), a brief public-domain alternative to commercial inventories, in a large community sample and in a college sample. In both samples, we examined the factor structure, scale intercorrelations, and personality correlates of the ORVIS, and in the community sample, we also examined the correlations of the ORVIS scales with cognitive abilities and with the scales of a longer, proprietary interest survey. In both samples, all 8 scales-Leadership, Organization, Altruism, Creativity, Analysis, Producing, Adventuring, and Erudition-showed wide variation in scores, high internal-consistency reliabilities, and a pattern of high convergent and low discriminant correlations with the scales of the proprietary interest survey. Overall, the results support the construct validity of the scales, which are recommended for use in research on vocational interests and other individual differences.


Assuntos
Inventário de Personalidade , Adolescente , Altruísmo , Escolha da Profissão , Cognição , Feminino , Humanos , Liderança , Masculino , Pessoa de Meia-Idade , Personalidade , Inventário de Personalidade/normas , Psicometria , Reprodutibilidade dos Testes , Orientação Vocacional/métodos
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