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1.
Health Psychol ; 43(5): 339-351, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38206847

RESUMEN

OBJECTIVES: To pilot and assess the feasibility, acceptability, and preliminary effects of the Rural Adult and Youth Sun (RAYS) protection program, a multilevel skin cancer preventive intervention for young children living in rural U.S. communities, delivered through community-organized team sports. METHOD: Three rural counties in Utah participated with two receiving the intervention and the third serving as a control. Youth sports leagues were recruited through recreation departments and the study took place from May through October 2021. Intervention leagues received sun protection supplies for players and coaches, educational materials for parents, and coaches were offered training on skin cancer and sun protection behaviors. RESULTS: The RAYS program is both feasible to deliver and acceptable to coaches, parents, and players. The intervention also demonstrates beneficial preliminary effects on components of observed child sun-protective behaviors, coach sun protection behaviors, knowledge of skin cancer prevention recommendations, and self-efficacy in skin cancer prevention. CONCLUSIONS: Multilevel interventions for skin cancer prevention among young children can be successfully delivered through community organizations and their settings. A priority moving forward is the identification of ways to optimize delivery of such programs to positively influence skin cancer preventive behaviors among children living in diverse rural areas. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Asunto(s)
Neoplasias Cutáneas , Quemadura Solar , Niño , Adulto , Humanos , Adolescente , Preescolar , Protectores Solares/uso terapéutico , Conductas Relacionadas con la Salud , Neoplasias Cutáneas/prevención & control , Padres , Conducta Infantil , Conocimientos, Actitudes y Práctica en Salud , Quemadura Solar/prevención & control
2.
Health Expect ; 25(6): 2937-2949, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36225123

RESUMEN

BACKGROUND: Diagnoses of both melanoma and nonmelanoma skin cancers are becoming increasingly common among young adults. Interventions in this population are a priority because they do not consistently follow skin cancer prevention recommendations. OBJECTIVES: The goal of the current study was to examine college students' perspectives on and experience with receiving a skin cancer prevention intervention that provided personalized skin cancer risk feedback in the form of an ultraviolet (UV) photograph, the results of genetic testing for common skin cancer risk variants, and/or general skin cancer prevention education. METHODS: Qualitative interviews were conducted with 38 college students who received a skin cancer prevention intervention. The interview covered students' feelings about their personal skin cancer risk information, the impact of the intervention on their skin cancer risk perceptions, actions or intentions to act with regard to their sun protection practices and feedback for improvement of the intervention content or delivery. RESULTS: Participants reported that different intervention components contributed to increased awareness of their sun protection behaviours, shifts in cognitions about and motivation to implement sun protection strategies and reported changes to their skin cancer prevention strategies. CONCLUSION: Our findings indicate that college students are interested in and responsive to these types of multicomponent skin cancer preventive interventions. Further, students demonstrate some motivation and intentionality toward changing their skin cancer risk behaviour in the short term. PATIENT OR PUBLIC CONTRIBUTION: Participants involved in this study were members of the public (undergraduate students) who were involved in a skin cancer prevention intervention, then participated in semistructured interviews, which provided the data analysed for this study.


Asunto(s)
Melanoma , Neoplasias Cutáneas , Adulto Joven , Humanos , Universidades , Neoplasias Cutáneas/prevención & control , Melanoma/prevención & control , Estudiantes , Motivación , Conductas Relacionadas con la Salud
3.
PLoS One ; 16(5): e0251871, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33989362

RESUMEN

Organizations and other groups often recognize the importance of members treating each other in a fair (dignified, unbiased) manner. This type of treatment is key to fostering individuals' sense of belonging in the group. However, while a sense of belonging is important, individuals also need to be shown that they have some distinct value to the group-enabling them to not only "fit in" but also "stand out." Building from research on fair treatment, we explicate another form, distinctive treatment, whereby others show interest and appreciation for an individual's more distinguishing, group-relevant qualities. In six studies using multiple methods (e.g., experimental, longitudinal) and in multiple types of groups (work organizations, student communities, racial/ethnic minority groups), we show that fair and distinctive treatment play fundamentally different roles-shaping individuals' perceived belonging versus intragroup standing, respectively-and with downstream benefits for mental health (less anxiety, fewer depressive symptoms). Overall, this illustrates that promoting fair treatment in groups is important, but not sufficient. Experiencing distinctive treatment is also key. Each type of treatment provides unique social evaluative information that fosters a healthy sense of self. This research further indicates that distinctive treatment may be a vital yet overlooked element to promoting diversity and inclusion in groups, as it provides a path for recognizing and appreciating, and thus encouraging, a diversity of ideas, insights, knowledge and skills that individuals bring to the group.


Asunto(s)
Ansiedad/terapia , Trastorno Depresivo/terapia , Salud Mental , Adulto , Ansiedad/epidemiología , Ansiedad/fisiopatología , Ansiedad/psicología , Trastorno Depresivo/epidemiología , Trastorno Depresivo/fisiopatología , Trastorno Depresivo/psicología , Etnicidad , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Grupos Minoritarios , Psicología Clínica , Estudiantes
4.
Dev Psychopathol ; 32(3): 923-933, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-31298177

RESUMEN

While child self-regulation is shaped by the environment (e.g., the parents' caregiving behaviors), children also play an active role in influencing the care they receive, indicating that children's individual differences should be integrated in models relating early care to children's development. We assessed 409 children's observed temperamental behavioral inhibition (BI), effortful control (EC), and the primary caregiver's parenting at child ages 3 and 5. Parents reported on child behavior problems at child ages 3, 5, and 8. Mediation analyses were conducted to examine relations between child temperament and parenting in predicting child problems. BI at age 3 was positively associated with structured parenting at age 5, which was negatively related to child internalizing and attention-academic problems at age 8. In contrast, parenting at child age 3 did not predict child BI or EC at age 5, nor did age 3 EC predict parenting at age 5. Findings indicate that child behavior may shape the development of caregiving and, in turn, long-term child adjustment, suggesting that studies of caregiving and child outcomes should consider the role of child temperament toward developing more informative models of child-environment interplay.


Asunto(s)
Responsabilidad Parental , Temperamento , Niño , Conducta Infantil , Preescolar , Humanos , Estudios Longitudinales , Relaciones Padres-Hijo
5.
Psychol Sci ; 30(11): 1625-1637, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31566081

RESUMEN

Societal inequality has been found to harm the mental and physical health of its members and undermine overall social cohesion. Here, we tested the hypothesis that economic inequality is associated with a wish for a strong leader in a study involving 28 countries from five continents (Study 1, N = 6,112), a study involving an Australian community sample (Study 2, N = 515), and two experiments (Study 3a, N = 96; Study 3b, N = 296). We found correlational (Studies 1 and 2) and experimental (Studies 3a and 3b) evidence for our prediction that higher inequality enhances the wish for a strong leader. We also found that this relationship is mediated by perceptions of anomie, except in the case of objective inequality in Study 1. This suggests that societal inequality enhances the perception that society is breaking down (anomie) and that a strong leader is needed to restore order (even when that leader is willing to challenge democratic values).


Asunto(s)
Relaciones Interpersonales , Liderazgo , Sistemas Políticos , Factores Socioeconómicos , Adolescente , Adulto , Anomia (Social) , Australia , Femenino , Estado de Salud , Humanos , Masculino , Adulto Joven
6.
Pers Soc Psychol Bull ; 45(3): 406-415, 2019 03.
Artículo en Inglés | MEDLINE | ID: mdl-30079828

RESUMEN

We conducted two studies to test the hypothesis that respect for disapproved outgroups increases tolerance toward them. In Study 1, we employed a panel sample of supporters of the Tea Party movement in the United States and found that Tea Party supporters' respect for homosexuals and Muslims as equal fellow citizens positively predicted Tea Party supporters' tolerance toward these groups. There was no indication that alternative recognition processes (i.e., achievement recognition or need recognition) played a similar role in the development of tolerance. Study 2 replicated the respect-tolerance link with the experimental method and a more comprehensive measure of tolerance. In particular, it demonstrated that the link also holds with regard to tolerance in the public or political sphere. The wider implications of our research for societal pluralism are discussed.


Asunto(s)
Respeto , Identificación Social , Actitud , Diversidad Cultural , Femenino , Procesos de Grupo , Humanos , Islamismo , Masculino , Persona de Mediana Edad , Política , Minorías Sexuales y de Género , Encuestas y Cuestionarios , Estados Unidos , Adulto Joven
7.
Br J Dev Psychol ; 36(3): 371-383, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29314168

RESUMEN

Effortful control (EC) has important implications for children's development. While both child sex and parenting are related to child EC, and while a literature shows early sex differences in children's responses to care, interactions between care and child sex in predicting EC are not well understood. We therefore examined associations between child sex and early caregiving as predictors of children's development of a specific aspect of EC, inhibitory control (IC). A community sample of 406 three-year-old children and their caregivers completed behavioural tasks and observational measures of parenting and IC, and children were re-assessed for IC at age 5. Results showed that early care influenced change in IC over time, although caregiving was a more important influence on boys' IC than girls; specifically, differences in boys' and girls' IC at age 5 were modest when parenting was positive. The implications of a better understanding of sex differences in associations between parenting and the development of IC in early childhood are discussed. Statement of contribution What is already known on this subject? While sex differences in reactivity to early care in the development of externalizing symptoms have been explored, very little is known about such differences in children's early-emerging effortful control. What does this study add? Using a longitudinal design and independent, laboratory methods of assessing study constructs, we provide new information showing that early care appears to differentially influence boys' development of inhibitory control, a key aspect of effortful control, in early childhood.


Asunto(s)
Conducta Infantil/fisiología , Desarrollo Infantil/fisiología , Crianza del Niño/psicología , Inhibición Psicológica , Responsabilidad Parental/psicología , Autocontrol/psicología , Preescolar , Femenino , Humanos , Estudios Longitudinales , Masculino , Factores Sexuales
8.
Dev Psychopathol ; 28(4pt1): 1103-1116, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27739394

RESUMEN

Persistently elevated behavioral inhibition (BI) in children is a marker of vulnerability to psychopathology. However, little research has considered the joint influences of caregiver and child factors that may moderate the continuity of BI in early childhood, particularly genetic variants that may serve as markers of biological plasticity, such as the serotonin transporter linked polymorphic region (5-HTTLPR). We explored this issue in 371 preschoolers and their caregivers, examining whether parent characteristics (i.e., overinvolvement or anxiety disorder) and child 5-HTTLPR influenced the continuity of BI between ages 3 and 5. Measures were observational ratings of child BI, observational and questionnaire measures of parenting, and parent interviews for anxiety disorder history, and children were genotyped for the 5-HTTLPR. Parent factors did not moderate the association between age 3 and age 5 BI; however, child BI at age 3 interacted with children's 5-HTTLPR variants to predict age 5 BI, such that children with at least one copy of the short allele exhibited less continuity of BI over time relative to children without this putative plasticity variant. Findings are consistent with previous work indicating the 5-HTTLPR short variant increases plasticity to contextual influences, thereby serving to decrease the continuity of BI in early childhood.


Asunto(s)
Conducta Infantil/fisiología , Inhibición Psicológica , Polimorfismo Genético , Regiones Promotoras Genéticas , Proteínas de Transporte de Serotonina en la Membrana Plasmática/genética , Alelos , Ansiedad/genética , Trastornos de Ansiedad/genética , Preescolar , Femenino , Genotipo , Humanos , Masculino , Responsabilidad Parental
9.
Br J Soc Psychol ; 54(1): 159-75, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24690102

RESUMEN

Although group-based relative deprivation predicts people's willingness to protest unfair outcomes, perceiving that one's subgroup is respected increases employees' support for organizations. An integration of these perspectives suggests that subgroup respect will dampen the impact of group-based relative deprivation on workers' responses to unfair organizational outcomes. We examined this hypothesis among university faculty (N = 804) who underwent a system-wide pay cut. As expected, group-based relative deprivation predicted protest intentions. This relationship was, however, muted among those who believed university administrators treated their area of expertise (i.e., their subgroup) with a high (vs. low) level of respect. Moderated mediation analyses confirmed that group-based relative deprivation had a conditional indirect effect on protest intentions via participants' (dis)identification with their university at low to moderate, but not high, levels of subgroup respect. Our finding that satisfying relational needs can attenuate responses to group-based relative deprivation demonstrates the benefits of integrating insights from distinct research traditions.


Asunto(s)
Disentimientos y Disputas , Procesos de Grupo , Salarios y Beneficios , Femenino , Humanos , Masculino , Persona de Mediana Edad , Cultura Organizacional , Análisis de Regresión , Identificación Social , Valores Sociales
10.
Neuroimage Clin ; 6: 77-85, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25379418

RESUMEN

Activity of the hypothalamic-pituitary-adrenal axis (measured via cortisol reactivity) may be a biological marker of risk for depression and anxiety, possibly even early in development. However, the structural neural correlates of early cortisol reactivity are not well known, although these would potentially inform broader models of mechanisms of risk, especially if the early environment further shapes these relationships. Therefore, we examined links between white matter architecture and young girls' cortisol reactivity and whether early caregiving moderated these links. We recruited 45 6-year-old girls based on whether they had previously shown high or low cortisol reactivity to a stress task at age 3. White matter integrity was assessed by calculating fractional anisotropy (FA) of diffusion-weighted magnetic resonance imaging scans. Parenting styles were measured via a standardized parent-child interaction task. Significant associations were found between FA in white matter regions adjacent to the left thalamus, the right anterior cingulate cortex, and the right superior frontal gyrus (all ps < .001). Further, positive early caregiving moderated the effect of high cortisol reactivity on white matter FA (all ps ≤ .05), with high stress reactive girls who received greater parent positive affect showing white matter structure more similar to that of low stress reactive girls. Results show associations between white matter integrity of various limbic regions of the brain and early cortisol reactivity to stress and provide preliminary support for the notion that parenting may moderate associations.


Asunto(s)
Hidrocortisona/metabolismo , Relaciones Padres-Hijo , Responsabilidad Parental/psicología , Estrés Psicológico/metabolismo , Estrés Psicológico/psicología , Sustancia Blanca/metabolismo , Niño , Femenino , Humanos , Estudios Longitudinales , Saliva/química , Saliva/metabolismo , Estrés Psicológico/diagnóstico , Sustancia Blanca/patología
11.
Psychoneuroendocrinology ; 38(10): 2327-36, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23764193

RESUMEN

Sex differences in rates of internalizing disorders have been attributed in part to heightened sensitivity to stress in females. While the sex difference in disorder rates becomes most pronounced in adolescence, developmental research suggests that stress reactivity in girls may be related to elevated internalizing symptoms even in childhood. We therefore examined whether child sex moderated associations between symptoms of psychopathology and cortisol reactivity to a standardized stress task in 409 three-year-old community-dwelling children. Anxious symptoms were associated with elevated cortisol reactivity, but only in girls. Externalizing symptoms were unrelated to baseline cortisol or cortisol reactivity, and no evidence for moderation by child sex was found. Results suggest that cortisol reactivity to stress in early childhood has a sex-specific association with girls' internalizing symptoms.


Asunto(s)
Sistema Hipotálamo-Hipofisario/fisiología , Trastornos Mentales/etiología , Sistema Hipófiso-Suprarrenal/fisiología , Estrés Psicológico/fisiopatología , Factores de Edad , Preescolar , Femenino , Humanos , Hidrocortisona/análisis , Masculino , Trastornos Mentales/epidemiología , Trastornos Mentales/fisiopatología , Saliva/química , Factores Sexuales , Clase Social , Estrés Psicológico/epidemiología
12.
Dev Sci ; 16(4): 515-30, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23786470

RESUMEN

Temperamental effortful control has important implications for children's development. Although genetic factors and parenting may influence effortful control, few studies have examined interplay between the two in predicting its development. The current study investigated associations between parenting and a facet of children's effortful control, inhibitory control (IC), and whether these associations were moderated by whether children had a 7-repeat variant of the DRD4 exon III VNTR. A community sample of 409 3-year-olds completed behavioural tasks to assess IC, and observational measures of parenting were also collected. Negative parenting was associated with lower child IC. The association between children's IC and positive parenting was moderated by children's DRD4 7-repeat status, such that children with at least one 7-repeat allele displayed lower IC than children without this allele when positive parenting was lower. These effects appeared to be primarily influenced by parent support and engagement. Results extend recent findings suggesting that some genetic polymorphisms may increase vulnerability to contextual influences.


Asunto(s)
Inhibición Psicológica , Responsabilidad Parental , Polimorfismo Genético , Receptores de Dopamina D4/genética , Adulto , Alelos , Cuidadores , Niño , Desarrollo Infantil , Preescolar , Exones , Femenino , Genotipo , Humanos , Masculino , Relaciones Padres-Hijo , Temperamento
13.
Am J Med Genet B Neuropsychiatr Genet ; 162B(3): 245-52, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23475824

RESUMEN

Catechol-O-Methyltransferase (COMT) is a critical regulator of catecholamine levels in the brain. A functional polymorphism of the COMT gene, val158met, has been linked to internalizing symptoms (i.e., depression and anxiety) in adolescents and adults. We extended this research by investigating whether the val158met polymorphism was associated with childhood symptoms of depression and anxiety in two independent samples of young children (Ns = 476 and 409). In both samples, preschool-aged children were genotyped for the COMT val158met polymorphism. Symptoms of psychopathology were assessed via parent interviews and primary caregiver reports. In both samples, children homozygous for the val allele had higher levels of depressive symptoms compared to children with at least one copy of the met allele. Our findings extend previous research in older participants by showing links between the COMT val158met polymorphism and internalizing symptoms in early childhood.


Asunto(s)
Catecol O-Metiltransferasa/genética , Depresión/genética , Predisposición Genética a la Enfermedad , Alelos , Ansiedad/genética , Preescolar , Femenino , Genotipo , Homocigoto , Humanos , Masculino , Metionina/genética , Polimorfismo Genético , Valina/genética
14.
Child Dev ; 83(6): 1932-44, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22862680

RESUMEN

Effortful control (EC), or the trait-like capacity to regulate dominant responses, has important implications for children's development. Although genetic factors and parenting likely influence EC, few studies have examined whether they interact to predict its development. This study examined whether the DRD4 exon III variable number tandem repeat polymorphism moderated the relation between parenting and children's EC. Three hundred and eighty-two 3-year-olds and primary caregivers completed behavioral tasks assessing children's EC and parenting. Children's DRD4 genotypes moderated the relation between parenting and EC: Children with at least one 7-repeat allele displayed lower EC in the context of negative parenting than children without this allele. These findings suggest opportunities for modifying early risk for low EC.


Asunto(s)
Dominación-Subordinación , Responsabilidad Parental , Polimorfismo Genético/genética , Receptores de Dopamina D4/genética , Adulto , Preescolar , Exones/genética , Femenino , Genotipo , Humanos , Masculino , Relaciones Padres-Hijo , Secuencias Repetidas en Tándem/genética , Temperamento/fisiología
15.
Pers Soc Psychol Bull ; 38(5): 628-41, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22215700

RESUMEN

A key insight from investigations of individual relative deprivation (IRD) is that people can experience objective disadvantages differently. In this study, university faculty (N = 953) who reported greater IRD in response to a mandatory furlough (i.e., involuntary pay reductions) were more likely to (a) voice options designed to improve the university (voice), (b) consider leaving their job (exit), and (c) neglect their work responsibilities (neglect), but were (d) less likely to express loyalty to the university (loyalty). Consistent with the emotions literature, (a) anger mediated the relationship between IRD and voice, (b) fear between IRD and exit, (c) sadness between IRD and neglect, and (d) gratitude between IRD and loyalty. IRD was inversely associated with self-reported physical and mental health via these different emotional pathways. These results show how discrete emotions can explain responses to IRD and, in turn, contribute to organizational viability and the health of its members.


Asunto(s)
Emociones , Empleo/economía , Empleo/psicología , Lealtad del Personal , Anciano , Ira , California , Docentes , Miedo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Carencia Psicosocial , Salarios y Beneficios , Conducta Social , Universidades
16.
Pers Soc Psychol Rev ; 16(3): 203-32, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22194251

RESUMEN

Relative deprivation (RD) is the judgment that one is worse off compared to some standard accompanied by feelings of anger and resentment. Social scientists use RD to predict a wide range of significant outcome variables: collective action, individual achievement and deviance, intergroup attitudes, and physical and mental health. But the results are often weak and inconsistent. The authors draw on a theoretical and meta-analytic review (210 studies composing 293 independent samples, 421 tests, and 186,073 respondents) to present a model that integrates group and individual RD. RD measures that (a) include justice-related affect, (b) match the outcome level of analysis, and (c) use higher quality measures yield significantly stronger relationships. Future research should focus on appropriate RD measurement, angry resentment, and the inclusion of theoretically relevant situational appraisals. Such methodological improvements would revitalize RD as a useful social psychological predictor of a wide range of important individual and social processes.


Asunto(s)
Carencia Psicosocial , Afecto , Actitud , Humanos , Modelos Psicológicos , Conducta Social , Justicia Social/psicología
17.
Psychoneuroendocrinology ; 36(8): 1127-36, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-21388745

RESUMEN

Identifying a stressor paradigm that elicits mean increases in salivary cortisol in young children has proven elusive, possibly due to characteristics of the paradigms used and how and when cortisol is sampled. We therefore examined the validity of a standardized task (adapted from Lewis and Ramsay, 2002) and procedures developed to assess cortisol reactivity in 215 preschool-aged children. Children participated in a standardized stress task during a home visit, which was videorecorded for future coding. Salivary cortisol samples were obtained at baseline and 10, 20, 30, 40, and 50 min post-stress. In support of the validity of the task, significant increases in cortisol levels from baseline were found, followed by a significant decline, and a quadratic function provided a good fit to the data. Children also showed a significant increase in negative emotions and a decrease in positive emotions over the course of the stress task. Results indicate that the task successfully elicited the hypothesized cortisol response in 3-year-old children.


Asunto(s)
Técnicas de Diagnóstico Endocrino , Hidrocortisona/análisis , Saliva/química , Estrés Psicológico/diagnóstico , Adulto , Afecto/fisiología , Factores de Edad , Conducta Infantil/fisiología , Preescolar , Técnicas de Diagnóstico Endocrino/normas , Femenino , Humanos , Hidrocortisona/metabolismo , Masculino , Reproducibilidad de los Resultados , Saliva/metabolismo , Estrés Psicológico/metabolismo , Análisis y Desempeño de Tareas
18.
AANA J ; 79(5): 371-3, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23256265

RESUMEN

Although rare, a carbon dioxide (CO2) embolism is a potential complication of laparoscopic surgery. An embolism may occur during insufflation of the abdomen after incorrect placement of a Veress needle into a vascular organ or an intra-abdominal vessel. If the CO2 embolism is not recognized, it can be rapidly fatal for the patient unless the patient receives treatment immediately. Therefore, anesthesia providers must be vigilant while monitoring, recognize when an embolism has occurred, and be able to provide effective management and treatment for their patient. This case report describes a 34-year-old woman who underwent a suction dilation and curettage, followed by an exploratory laparoscopic procedure to examine her uterus. After placement of the Veress needle and insufflation of the abdomen, a CO2 embolism developed that caused severe hypotension, bradycardia, and loss of end-tidal CO2 tracing. The patient was treated quickly and aggressively with fluid administration and intravenous vasopressors. Because of rapid recognition and treatment the patient did not suffer any long-term adverse medical events.


Asunto(s)
Aborto Espontáneo/cirugía , Dióxido de Carbono/sangre , Embolia Aérea/etiología , Laparoscopía/métodos , Enfermeras Anestesistas , Neumoperitoneo Artificial/efectos adversos , Adulto , Dilatación y Legrado Uterino/métodos , Femenino , Humanos , Embarazo
19.
Psychiatr Genet ; 20(3): 109-12, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20400928

RESUMEN

BACKGROUND: The brain derived neutrophic factor (BDNF), a 27 kD polypeptide, is one of the most widely expressed neurotrophins in the brain, regulating neural development and plasticity. The BDNF gene contains a functional single-nucleotide polymorphism (rs6265), which results in a valine to methionine substitution (val66met), leading to reduced mature BDNF expression. This polymorphism has been widely implicated in a host of psychiatric disorders and is a focus of many ongoing psychiatric genetic studies. OBJECTIVE: To develop an efficient and rapid method to detect the val66met polymorphism in a one-step PCR reaction. METHOD AND RESULTS: We have designed four PCR primers that amplify the BDNF gene region containing rs6265. The specificity of the four primers in a single PCR reaction amplifies two allele-specific amplicons (253 and 201 bp) and the entire region (401 bp) as an internal control, which are easily distinguished on a polyacrylamide gel. The effectiveness and efficiency of the results are validated by traditional NlaIII restriction enzyme digestion, sequencing of resulting bands and confirmation on 308 genomic DNA samples. CONCLUSION: This new method describes a rapid, sensitive, cost effective and high throughput genotyping of the BDNF val66met polymorphism, ideal for large-scale genotyping studies.


Asunto(s)
Factor Neurotrófico Derivado del Encéfalo/genética , Mutación/genética , Reacción en Cadena de la Polimerasa/métodos , Polimorfismo de Nucleótido Simple/genética , Genotipo , Humanos , Reproducibilidad de los Resultados
20.
Am J Psychiatry ; 166(2): 206-15, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-18829870

RESUMEN

OBJECTIVE: The study of ethnically homogeneous populations may help to identify schizophrenia risk loci. The authors conducted a genomewide linkage scan for schizophrenia in an Indian population. METHOD: Participants were 441 individuals (262 affected probands and siblings) who were recruited primarily from one ethnically homogeneous group, the Tamil Brahmin caste, although individuals from other geographically proximal castes also participated. Genotyping of 124 affected sibling pair pedigrees was performed with 402 short tandem repeat polymorphisms. Linkage analyses were conducted using nonparametric exponential LOD (logarithm of the odds ratio for linkage) scores and parametric heterogeneity LOD scores. Parametric heterogeneity scores were calculated using simple dominant and recessive models, correcting for multiple statistics. The data were examined for evidence of consanguinity. Genomewide significance levels were determined using 10,000 gene dropping simulations. RESULTS: These findings revealed genomewide significant linkage to chromosome 1p31.1, through the use of both exponential and heterogeneity LOD scores, incorporating correction for multiple statistics and mild consanguinity. The estimated sibling recurrence risk associated with this putative locus was 1.95. Analysis for heterogeneity LOD scores also detected suggestive linkage to chromosomes 13q22.1 and 16q12.2. Using 117 tag single nucleotide polymorphisms (SNPs), family-based association analyses of phosphodiesterase 4B (PDE4B), the closest schizophrenia candidate gene, detected no convincing evidence of association, suggesting that the chromosome 1 peak represents a novel risk locus. CONCLUSIONS: This is the first study-to the authors' knowledge-to report significant linkage of schizophrenia to chromosome 1p31.1. Further investigation of this chromosome region in diverse populations is warranted to identify underlying sequence variants.


Asunto(s)
Mapeo Cromosómico , Cromosomas Humanos Par 1/genética , Esquizofrenia/genética , Adulto , Alelos , Consanguinidad , Fosfodiesterasas de Nucleótidos Cíclicos Tipo 4/genética , Femenino , Genotipo , Humanos , India , Escala de Lod , Masculino , Repeticiones de Microsatélite/genética , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple/genética , Esquizofrenia/diagnóstico , Esquizofrenia/etnología
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