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1.
BMC Public Health ; 23(1): 911, 2023 05 19.
Artículo en Inglés | MEDLINE | ID: mdl-37208663

RESUMEN

BACKGROUND: Thailand was the first country in Asia to legalize the use and purchase of cannabis leaves in February 2021 and the whole plant in June 2022 after the 2019 allowance for medical purposes. The study explored trends in cannabis use in Thailand before and after the recreational cannabis allowance was imposed. METHODS: Cannabis and other variables of substance use, cannabis use disorder, and attitude towards cannabis of the Thai population aged 18 to 65 years in 2019 (n = 5,002), 2020 (n = 5,389) and 2021 (n = 5,669) were obtained from annual surveys conducted in the last two months of each year by the Centre for Addiction Studies. The surveys were repeat cross-sectional surveys of the general population of Thailand. Repeated variables from at least two annual surveys were included for analysis using the Chi-square test and the t-test. RESULTS: The prevalence of cannabis use in the past year had increased from 2.2% in 2019 to 2.5% and 4.2% in 2020 and 2021 respectively, while those of methamphetamine, alcohol, and tobacco use had decreased. Trends in past-year drinking/eating cannabis products had increased, especially among the middle age group (40-49 years) from 2.1% (95% confidence interval (CI): 1.3, 3.1) in 2019 and 1.1% (95% CI: 0.6, 1.9) in 2020 to 3.8% (95% CI: 2.8, 5.0) in 2021. The younger population aged 18-19 had an increase in cannabis smoking from 0.9% (95% CI: 0.1, 3.3) in 2019 to 2.0% (95% CI: 0.5, 5.1) and 2.2% (95% CI: 0.7, 5.1) in 2020 and 2021 respectively. Symptoms of cannabis use disorder among cannabis users increased from 2019 to 2020 and then reversed afterwards in 2021. Thais had greater health knowledge about the benefits and harms of cannabis and had attitudes toward more harm of cannabis in 2021; however, 35.6% or a third of the sample in 2021 truly believed that cannabis was a cure for cancer, and 23.2% or one-fourth were uncertain or did not believe that cannabis was addictive. CONCLUSIONS: Although most of the substances had a lower prevalence of use during the COVID-19 pandemic in Thailand, cannabis had a higher use after legalization. Thai youth had a growing trend to smoke cannabis.


Asunto(s)
COVID-19 , Cannabis , Abuso de Marihuana , Trastornos Relacionados con Sustancias , Persona de Mediana Edad , Adolescente , Humanos , Abuso de Marihuana/epidemiología , Estudios Transversales , Países en Desarrollo , Pandemias , Tailandia/epidemiología
2.
BMC Public Health ; 22(1): 2277, 2022 12 05.
Artículo en Inglés | MEDLINE | ID: mdl-36471267

RESUMEN

BACKGROUND: The main objective of this study was to investigate the association between parental supply of alcohol, alcohol-related harms, and the severity of alcohol use disorder in Thai 7th grade middle school students. METHODS: A cross-sectional descriptive study obtained the baseline data from the project named the Thailand Parental Supply and Use of Alcohol, Cigarettes & Drugs Longitudinal Study Cohort in Secondary School Students in 2018. The sample size was 1187 students who have ever sipped or drank alcohol in the past 12 months. Pearson's Chi square, binary logistic regression, and ordinal logistic regression are applied in the analysis. RESULTS: A single source of parental supply is not significantly associated with any alcohol-related harm and the severity of alcohol use disorder, while parental supply with peers and siblings supply of alcohol plays an important role in both outcomes. The increasing number of sources of alcohol supply increases the risk of alcohol-related harm and the severity of alcohol use disorder. Other risk factors found in both associations included binge drinking, alcohol flushing, low household economic status, distance from the student's family, and poor academic performance. Gender, exposure to alcohol ads on social media and location of residency were not associated with alcohol-related harms or severity of alcohol use disorder. CONCLUSIONS: The results did not support parental guidance in teaching or giving children a drink or sip of alcohol within family to prevent related harms when drinking outside with their peers.


Asunto(s)
Conducta del Adolescente , Alcoholismo , Niño , Adolescente , Humanos , Tailandia/epidemiología , Estudios Transversales , Estudios Longitudinales , Instituciones Académicas , Consumo de Bebidas Alcohólicas/epidemiología
3.
Alcohol Clin Exp Res ; 42(5): 861-868, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29460428

RESUMEN

BACKGROUND: Alcohol use (both quantity and dependence) is moderately heritable, and genomewide association studies (GWAS) have identified risk genes in European, African, and Asian populations. The most reproducibly identified risk genes affect alcohol metabolism. Well-known functional variants at the gene encoding alcohol dehydrogenase B and other alcohol dehydrogenases affect risk in European and African ancestry populations. Similarly, variants mapped to these same genes and a well-known null variant that maps to the gene that encodes aldehyde dehydrogenase 2 (ALDH2) also affect risk in various Asian populations. In this study, we completed the first GWAS for 3 traits related to alcohol use in a Thai population recruited initially for studies of methamphetamine dependence. METHODS: All subjects were evaluated with the Thai version of the Semi-Structured Assessment for Drug Dependence and Alcoholism (SSADDA). A total of 1,045 subjects were available for analysis. Three traits were analyzed: flushing, maximum number of alcoholic beverages consumed in any lifetime 24-hour period ("MAXDRINKS"), and DSM-IV alcohol dependence criterion count. We also conducted a pleiotropy analysis with major depression, the only other psychiatric trait where summary statistics from a large-scale Asian-population GWAS are available. RESULTS: All 3 traits showed genomewide significant association with variants near ALDH2, with significance ranging from 2.01 × 10-14 (for flushing; lead single nucleotide polymorphism (SNP) PTPN11* rs143894582) to pmeta  = 5.80 × 10-10 (for alcohol dependence criterion count; lead SNP rs149212747). These lead SNPs flank rs671 and span a region of over a megabase, illustrating the need for prior biological information in identifying the actual effect SNP, rs671. We also identified significant pleiotropy between major depression and flushing. CONCLUSIONS: These results are consistent with prior findings in Asian populations and add new information regarding alcohol use-depression pleiotropy.


Asunto(s)
Consumo de Bebidas Alcohólicas/genética , Alcoholismo/genética , Aldehído Deshidrogenasa Mitocondrial/genética , Rubor/genética , Predisposición Genética a la Enfermedad/genética , Adulto , Pueblo Asiatico/genética , Trastorno Depresivo Mayor/genética , Femenino , Pleiotropía Genética , Estudio de Asociación del Genoma Completo , Humanos , Masculino , Polimorfismo de Nucleótido Simple/genética , Tailandia , Adulto Joven
4.
Qual Life Res ; 27(4): 905-912, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29327094

RESUMEN

PURPOSE: Secondhand smoke (SHS) exposure is prevalent and could damage the health of non-smokers, especially that of pregnant women (PW) and postpartum women (PPW). Nevertheless, there is no study on the impact of SHS during pregnancy on the quality of life (QOL) of PW and PPW. The study's purpose is to study the effects of exposure to SHS on the QOL of pregnant and postpartum women and health of the newborns. METHODS: Self-reports and urine tests for cotinine were used to obtain data on SSH exposure in 296 women in the second trimester of pregnancy and 106 women in the postpartum period at the Obstetrics & Gynecology Clinic located in a university hospital. The WHOQOL-BREF-THAI and the Edinburgh Postnatal Depression Scale were used to assess QOL and postpartum depression, respectively. RESULTS: Of the participants, 88.2% of PW and 62.3% of PPW reported exposure to SHS during pregnancy. Of the PPW, 5.7% had postpartum depression. PW with good QOL were less likely to have family member who smoked (p = 0.007) or to be exposed to SHS in public parks (p = 0.037) or in the household or workplace (p = 0.011). Likewise, PPW with good QOL in the psychological domain were less likely to be exposed to SHS during pregnancy, as shown in both verbal report (p = 0.010) and objective measure of urine cotinine test (p = 0.034). In addition, maternal exposure to SHS during pregnancy is associated with low birth weight and other health problems in the newborns (p < 0.05). CONCLUSIONS: Exposure to SHS during pregnancy is associated with a lower QOL and a poorer health condition in the newborns.


Asunto(s)
Exposición Materna/prevención & control , Periodo Posparto/psicología , Mujeres Embarazadas/psicología , Calidad de Vida/psicología , Contaminación por Humo de Tabaco/prevención & control , Adulto , Femenino , Humanos , Recién Nacido , Embarazo , Prevalencia , Autoinforme , Adulto Joven
5.
Curr Opin Psychiatry ; 36(4): 283-289, 2023 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-37185310

RESUMEN

PURPOSE OF REVIEW: As more jurisdictions legalize cannabis for non-medical use, the evidence on how legalization policies affect cannabis use and the use of other substances remains inconclusive and contradictory. This review aims to summarize recent research findings on the impact of recreational cannabis legalization (RCL) on cannabis and other substance use among different population groups, such as youth and adults. RECENT FINDINGS: Recent literature reports mixed findings regarding changes in the prevalence of cannabis use after the adoption of RCL. Most studies found no significant association between RCL and changes in cannabis use among youth in European countries, Uruguay, the US, and Canada. However, some studies have reported increases in cannabis use among youth and adults in the US and Canada, although these increases seem to predate RCL. Additionally, there has been a marked increase in unintentional pediatric ingestion of cannabis edibles postlegalization, and an association between RCL and increased alcohol, vaping, and e-cigarette use among adolescents and young adults. SUMMARY: Overall, the effects of cannabis legalization on cannabis use appear to be mixed. Further monitoring and evaluation research is needed to provide longer-term evidence and a more comprehensive understanding of the effects of RCL.


Asunto(s)
Cannabis , Sistemas Electrónicos de Liberación de Nicotina , Uso de la Marihuana , Adolescente , Adulto Joven , Humanos , Niño , Cannabis/efectos adversos , Legislación de Medicamentos , Uso de la Marihuana/efectos adversos , Uso de la Marihuana/epidemiología , Canadá/epidemiología
6.
Psychodyn Psychiatry ; 51(3): 261-269, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37772868

RESUMEN

The authors provide an overview of psychiatry and psychodynamic psychotherapy in Thailand, including a discussion of practice patterns, trends, and the cultural context of the delivery of psychotherapy services in this Southeast Asian country. They discuss a way forward in psychodynamic psychotherapy training that is collaborative, self-sustaining, and leads to competence. They address how to culturally adapt psychodynamic psychotherapy and suggest areas of research that would advance the field. Lastly, they discuss psychodynamic pedagogical strategies that may be acceptable and effective in underserved areas.


Asunto(s)
Internado y Residencia , Psiquiatría , Psicoanálisis , Psicoterapia Psicodinámica , Humanos , Psicoterapia Psicodinámica/educación , Tailandia , Psiquiatría/educación , Psicoterapia/educación
7.
Transl Psychiatry ; 13(1): 361, 2023 Nov 23.
Artículo en Inglés | MEDLINE | ID: mdl-37996407

RESUMEN

There are only a few studies reporting on the immunological profiles of methamphetamine (MA) use, MA dependency, or MA-induced psychosis (MAP). This study measured M1 macrophage, T helper (Th)-1, Th-2, growth factor, and chemokine profiles, as well as the immune inflammatory response system (IRS) and compensatory immunoregulatory system (CIRS) in peripheral blood samples from patients with MA use (n = 51), MA dependence (n = 47), and MAP (n = 43) in comparison with controls (n = 32). We discovered that persistent MA use had a robust immunosuppressive impact on all immunological profiles. The most reliable biomarker profile of MA use is the combination of substantial CIRS suppression and a rise in selected pro-inflammatory cytokines, namely CCL27 (CTACK), CCL11 (eotaxin), and interleukin (IL)-1α. In addition, MA dependency is associated with increased immunosuppression, as demonstrated by lower stem cell factor levels and higher IL-10 levels. MAP is related to a significant decrease in all immunological profiles, particularly CIRS, and an increase in CCL5 (RANTES), IL-1α, and IL-12p70 signaling. In conclusion, long-term MA use and dependency severely undermine immune homeostasis, whereas MAP may be the consequence of increased IL-1α - CCL5 signaling superimposed on strongly depleted CIRS and Th-1 functions. The widespread immunosuppression established in longstanding MA use may increase the likelihood of infectious and immune illness or exacerbate disorders such as hepatitis and AIDS. Furthermore, elevated levels of CCL5, CCL11, CCL27, IL-1α, and/or IL-12p70 may play a role in the peripheral (atherosclerosis, cutaneous inflammation, immune aberrations, hypospermatogenesis) and central (neuroinflammation, neurotoxic, neurodegenerative, depression, anxiety, and psychosis) side effects of MA use.


Asunto(s)
Interleucina-1alfa , Trastornos Psicóticos , Humanos , Citocinas/metabolismo , Biomarcadores , Sistema Inmunológico , Péptidos y Proteínas de Señalización Intercelular , Quimiocina CCL5
8.
Psychiatry Res ; 317: 114886, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36252419

RESUMEN

This non-concurrent controlled intervention study aimed to examine the effectiveness of the Mindfulness - Based Therapy and Counseling programs (MBTC) on the treatment of methamphetamine use disorder among 70 individuals (37 females) receiving methamphetamine dependency treatment. Participants were divided into a control group undergoing the usual program and an experimental group using MBTC plus the usual program at a treatment center in Thailand. The study was conducted using the Methamphetamine Craving Questionnaire, urine Color Immunochromatographic Assay and the Mini-International Neuropsychiatric Interview. Stress, depression, and mindfulness were also assessed. MBTC comprised of practicing mindfulness for 90-120 min weekly for eight weeks. Participants were assessed before and after the treatment(s) and at follow-ups visits at 2, 4, 8, 12, and 24 weeks. Mean age (30.3 ± 5.8 years), age of first methamphetamine use (18.2 ± 4.5 years) and other demographics did not differ between groups. At six-month follow-up, the experimental group had significantly lower craving (-7.89, 95%CI = -15.47, -0.32), stress (-7.44, 95%CI = -12.21, -2.67), and depression (-2.95, 95%CI = -5.31, -0.6) and statistically significant higher mindfulness scores (12.86, 95%CI = 9.37, 16.35) than the control group. In addition, methamphetamine relapse in the MBTC group (5/35, 14.3%) was significantly lower than the control group (16/35, 45.7%).


Asunto(s)
Trastornos Relacionados con Anfetaminas , Metanfetamina , Atención Plena , Adolescente , Adulto , Femenino , Humanos , Adulto Joven , Trastornos Relacionados con Anfetaminas/terapia , Trastornos Relacionados con Anfetaminas/psicología , Consejo , Atención Plena/métodos , Recurrencia , Resultado del Tratamiento , Masculino , Ensayos Clínicos Controlados como Asunto
9.
World J Biol Psychiatry ; 23(8): 613-621, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-34895035

RESUMEN

OBJECTIVE: This study aims to examine the effects of methamphetamine (MA) use and dependence and MA withdrawal symptoms on the telomere length and whether shortening of the latter is associated with MA-induced psychosis (MIP). METHODS: This study included 185 MA-abuse, 118 MA-dependent, and 67 MIP patients, diagnosed using DSM-IV criteria. The Semi-structured Assessment for Drug Dependence and Alcoholism (SSADDA) questionnaire was employed to collect MA-related data. MIP was confirmed using the Methamphetamine Experience Questionnaire (MEQ). The leukocyte telomere length was measured using real-time polymerase chain reaction measuring the Telomere/Single gene ratio (T/S ratio). Data were analysed using multivariate statistical analyses. RESULTS: There were no significant associations between the T/S ratio and severity of MA-use, MIP, and MA withdrawal symptoms. MIP was significantly predicted by alcohol dependence, antisocial personality disorder, and MA-use severity. There were significantly positive associations between the T/S ratio and previous traumatic and life-threatening events. The T/S ratio was not affected by alcohol and nicotine dependence. Alcohol and nicotine dependence, antisocial personality disorder, and severity of MA use increased risk of MA withdrawal symptoms. CONCLUSION: MIP and MA-use severity are not associated with leukocyte telomere length, but previous traumatic and life-threatening events are associated with increased telomere length.


Asunto(s)
Alcoholismo , Trastornos Relacionados con Anfetaminas , Metanfetamina , Trastornos Psicóticos , Síndrome de Abstinencia a Sustancias , Tabaquismo , Humanos , Metanfetamina/efectos adversos , Tabaquismo/complicaciones , Trastornos Relacionados con Anfetaminas/complicaciones , Alcoholismo/genética , Alcoholismo/complicaciones , Trastornos Psicóticos/genética , Trastornos Psicóticos/complicaciones , Leucocitos , Telómero/genética
10.
Neuropsychopharmacology ; 47(10): 1791-1797, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35094024

RESUMEN

Alcohol use disorder (AUD) is a leading cause of death and disability worldwide. Genome-wide association studies (GWAS) have identified ~30 AUD risk genes in European populations, but many fewer in East Asians. We conducted GWAS and genome-wide meta-analysis of AUD in 13,551 subjects with East Asian ancestry, using published summary data and newly genotyped data from five cohorts: (1) electronic health record (EHR)-diagnosed AUD in the Million Veteran Program (MVP) sample; (2) DSM-IV diagnosed alcohol dependence (AD) in a Han Chinese-GSA (array) cohort; (3) AD in a Han Chinese-Cyto (array) cohort; and (4) two AD Thai cohorts. The MVP and Thai samples included newly genotyped subjects from ongoing recruitment. In total, 2254 cases and 11,297 controls were analyzed. An AUD polygenic risk score was analyzed in an independent sample with 4464 East Asians (Genetic Epidemiology Research in Adult Health and Aging (GERA)). Phenotypes from survey data and ICD-9-CM diagnoses were tested for association with the AUD PRS. Two risk loci were detected: the well-known functional variant rs1229984 in ADH1B and rs3782886 in BRAP (near the ALDH2 gene locus) are the lead variants. AUD PRS was significantly associated with days per week of alcohol consumption (beta = 0.43, SE = 0.067, p = 2.47 × 10-10) and nominally associated with pack years of smoking (beta = 0.09, SE = 0.05, p = 4.52 × 10-2) and ever vs. never smoking (beta = 0.06, SE = 0.02, p = 1.14 × 10-2). This is the largest GWAS of AUD in East Asians to date. Building on previous findings, we were able to analyze pleiotropy, but did not identify any new risk regions, underscoring the importance of recruiting additional East Asian subjects for alcohol GWAS.


Asunto(s)
Alcoholismo , Alcohol Deshidrogenasa/genética , Consumo de Bebidas Alcohólicas/genética , Alcoholismo/epidemiología , Alcoholismo/genética , Aldehído Deshidrogenasa Mitocondrial/genética , Predisposición Genética a la Enfermedad/genética , Estudio de Asociación del Genoma Completo , Humanos , Polimorfismo de Nucleótido Simple/genética
11.
Asia Pac Psychiatry ; 13(4): e12493, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34873871

RESUMEN

Since the start of COVID-19 pandemic in March 2020, training of psychiatry and mental health has been impacted considerably. We illustrated the change of academic and clinical psychiatric residency training procedure at Chulalongkorn University in Bangkok, Thailand, a developing country situated in South East Asia which is categorized in the low and middle income category of countries. The training setting has set up a task force responsible to set various strategies in response to the COVID-19 measure of social and physical distancing to maintain standard of care for psychiatric patients and educational experience for psychiatric residents. The strategies include online education, service team separation, and avoidance of contact between teams, reduction of non-urgent clinical activities, and the use of telemedicine for psychiatric patients. Despite exposure to the difficulties of training during the pandemic, all senior residents were qualified and licensed at the national examination. Residents reported that pandemic did affect the academic activities and services and also the quality of living and satisfaction. Academic issues, including the inconvenience of studying online, were the most concerned problems among psychiatric residents at the time of pandemic.


Asunto(s)
COVID-19 , Internado y Residencia , Psiquiatría , Brotes de Enfermedades , Humanos , Salud Mental , Pandemias , Psiquiatría/educación , SARS-CoV-2 , Tailandia/epidemiología
12.
Asian Pac J Cancer Prev ; 22(7): 2199-2207, 2021 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-34319044

RESUMEN

OBJECTIVE: The study explored e-cigarette use among youth and associated factors in Thailand. METHODS: This was a cross sectional study of 6,045 seventh grade students selected using a multistage design. Self-administered questionnaires relating to the socio-demographic characteristics, history of cigarette and e-cigarette uses, friends' and family's use of e-cigarettes, knowledge and perception of e-cigarette use, history of alcohol uses, and life assets were gathered. Multivariate logistic regression models were used to examine the variables and their association with e-cigarette use. RESULTS: Prevalence of ever e-cigarette use was 7.2% and current e-cigarette use was 3.7%. We found that current cigarette smoking (AOR 4.28, 95% CI: 2.05-8.94), parental e-cigarette use (AOR 6.08, 95% CI: 2.81-13.17), peer e-cigarette use (AOR 3.82, 95% CI: 2.19-6.65), peer approval of smoking (AOR 1.95, 95% CI: 1.11-3.41), and unaware of e-cigarettes' risk (AOR 5.25, 95% CI: 2.67-10.34). were significantly associated with current use of e-cigarettes. Male sex, poor academic achievement, and poor life assets (power of wisdom) were only significantly associated with ever e-cigarette use. CONCLUSION: Prevalence of current e-cigarette use among Thai middle school students did not change significantly since the government banned importation and sales of e-cigarettes in 2015, suggesting that the Thai ban has been a success. Factors associated with e-cigarette use among Thai youth were consistent with other countries. Ever e-cigarette use, increased, but less than in countries without a ban. To strengthen efforts to prevent youth from e-cigarette use and addiction, the government should improve law enforcement, especially against online marketing and strengthen school-based anti-smoking programs to include e-cigarette lessons, educating parents and the public about the harm of e-cigarettes, including secondhand effects on non-users.
.


Asunto(s)
Vapeo/psicología , Adolescente , Estudios Transversales , Femenino , Humanos , Masculino , Encuestas y Cuestionarios , Tailandia
13.
Schizophr Res ; 208: 221-227, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-30826260

RESUMEN

BACKGROUND: There is evidence that schizophrenia is a neuro-immune disorder. Genes linked to intragenic LINE-1 methylation show a strong association with immune-associated disorders including psychosis. The aim of this study was to examine LINE-1 methylation patterns in paranoid schizophrenia and methamphetamine-induced paranoia, a model for schizophrenia. METHODS: This study recruited 31 patients with paranoid schizophrenia, 94 with methamphetamine-induced paranoia (MIP) and 163 normal controls. LINE-1 methylation patterns were assayed in peripheral blood mononuclear cells and a combined bisulphite restriction analysis and COBRA were used to estimate LINE1 methylation (mC) and CpG dinucleotide methylation patterns, namely 2 methylated (mCmC) and 2 unmethylated (uCuC) CpGs and the partially methylated loci mCuC (5'm with 3'u) and uCmC (5'u with 3'm). RESULTS: Patients with paranoid schizophrenia show highly significant changes in LINE-1 partial methylation patterns, namely a higher percentage of mCuC and lower percentage of uCmC as compared with controls and MIP patients, while the latter show a higher percentage of mCuC but lower percentage of uCmC as compared with controls. Higher mCuC significantly predicts paranoid schizophrenia with a sensitivity of 51.6%, specificity of 97.5% and an area under the ROC curve of 0.895. CONCLUSIONS: The results indicate that a common dysfunction in LINE-1 partial methylation may underpin both paranoid schizophrenia and MIP and that this methylation pattern is significantly more expressed in paranoid schizophrenia than MIP. Reciprocal links between impairments in LINE-1 methylation and neuro-immune and neuro-oxidative pathways may underpin the pathophysiology of both MIP and paranoid schizophrenia.


Asunto(s)
Trastornos Relacionados con Anfetaminas/metabolismo , Metilación de ADN , Elementos de Nucleótido Esparcido Largo , Trastornos Paranoides/inducido químicamente , Trastornos Paranoides/metabolismo , Esquizofrenia Paranoide/metabolismo , Adulto , Trastornos Relacionados con Anfetaminas/genética , Trastornos Relacionados con Anfetaminas/psicología , Estimulantes del Sistema Nervioso Central/administración & dosificación , Estimulantes del Sistema Nervioso Central/efectos adversos , Islas de CpG , Femenino , Humanos , Masculino , Metanfetamina/administración & dosificación , Metanfetamina/efectos adversos , Trastornos Paranoides/genética , Esquizofrenia Paranoide/genética , Sensibilidad y Especificidad
14.
Mol Neurobiol ; 56(6): 4258-4272, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30302724

RESUMEN

The use of psychoactive substances, including methamphetamine (MA) may cause changes in DNA methylation. The aim of this study was to examine the effects of MA use on long interspersed element-1 (LINE-1) methylation patterns in association with MA-induced paranoia. This study recruited 123 normal controls and 974 MA users, 302 with and 672 without MA-induced paranoia. The Semi-Structured Assessment for Drug Dependence and Alcoholism was used to assess demographic and substance use variables. Patterns of LINE-1 methylation were assessed in peripheral blood mononuclear cells and a combined bisulfite restriction analysis (COBRA) was used to estimate overall LINE-1 methylation (mC) while COBRA classified LINE-alleles into four patterns based on the methylation status of two CpG dinucleotides on each strand from 5' to 3', namely two methylated (mCmC) and two unmethylated (uCuC) CpGs and two types of partially methylated loci (mCuC that is 5'm with 3'u and uCmC that is 5'u with 3'm CpGs). MA users showed higher % mCuC and % mCuC + uCmC levels than controls. Use of solvents and opioids, but not cannabis and alcohol dependence, significantly lowered % uCmC levels, while current smoking significantly increased % uCuC levels. MA-induced paranoia was strongly associated with changes in LINE-1 partial methylation patterns (lowered % uCmC), heavy MA use, lower age at onset of MA use, and alcohol dependence. Women who took contraceptives showed significantly lower LINE-1 % mC and % mCmC and higher % uCuC levels than women without contraceptive use and men. The results show that MA-induced changes in LINE-1 partial methylation patterns are associated with MA-induced paranoia and could explain in part the pathophysiology of this type of psychosis. It is argued that MA-induced neuro-oxidative pathways may have altered LINE-1 partial methylation patterns, which in turn may regulate neuro-oxidative and immune pathways, which may increase risk to develop MA-induced paranoia.


Asunto(s)
Metilación de ADN/genética , Elementos de Nucleótido Esparcido Largo/genética , Metanfetamina/efectos adversos , Red Nerviosa/patología , Neuronas/patología , Trastornos Paranoides/inducido químicamente , Trastornos Paranoides/genética , Adulto , Estudios de Casos y Controles , Factores de Confusión Epidemiológicos , Femenino , Humanos , Modelos Logísticos , Masculino , Análisis Multivariante , Red Nerviosa/metabolismo , Neuronas/metabolismo , Trastornos Paranoides/patología
15.
Transl Psychiatry ; 9(1): 249, 2019 10 07.
Artículo en Inglés | MEDLINE | ID: mdl-31591379

RESUMEN

Alcohol-related behaviors are moderately heritable and have ethnic-specific characteristics. At present, genetic studies for alcohol dependence (AD) in Chinese populations are underrepresented. We are the first to conduct a genome-wide association study (GWAS) for AD using 533 male alcoholics and 2848 controls of Han Chinese ethnicity and replicate our findings in 146 male alcoholics and 200 male controls. We then assessed genetic effects on AD characteristics (drinking volume/age onset/Michigan Alcoholism Screening Test (MAST)/Barratt Impulsiveness Scale (BIS-11)), and compared the polygenic risk of AD in Han Chinese with other populations (Thai, European American and African American). We found and validated two significant loci, one located in 4q23, with lead SNP rs2075633*ADH1B (Pdiscovery = 6.64 × 10-16) and functional SNP rs1229984*ADH1B (Pdiscovery = 3.93 × 10-13); and the other located in 12q24.12-12q24.13, with lead SNP rs11066001*BRAP (Pdiscovery = 1.63 × 10-9) and functional SNP rs671*ALDH2 (Pdiscovery = 3.44 × 10-9). ADH1B rs1229984 was associated with MAST, BIS_total score and average drinking volume. Polygenic risk scores from the Thai AD and European American AD GWAS were significantly associated with AD in Han Chinese, which were entirely due to the top two loci, however there was no significant prediction from African Americans. This is the first case-control AD GWAS in Han Chinese. Our findings demonstrate that these variants, which were highly linked with ALDH2 rs671 and ADH1B rs1229984, were significant modulators for AD in our Han Chinese cohort. A larger replication cohort is still needed to validate our findings.


Asunto(s)
Alcoholismo/genética , Pueblo Asiatico/genética , Herencia Multifactorial , Polimorfismo de Nucleótido Simple , Adulto , Negro o Afroamericano/genética , Alcohol Deshidrogenasa/genética , Aldehído Deshidrogenasa Mitocondrial/genética , Estudios de Casos y Controles , China , Comparación Transcultural , Predisposición Genética a la Enfermedad , Estudio de Asociación del Genoma Completo , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Población Blanca/genética , Adulto Joven
16.
Addict Biol ; 13(3-4): 403-10, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18782384

RESUMEN

This study aimed to examine sex differences in cocaine self-administration and cocaine-induced subjective and cardiovascular measures. The research was based on secondary analysis of data collected in our human laboratory in which subjects self-administered cocaine infusions (8, 16 and 32 mg/70 kg) over a 2-hour period under a fixed ratio 1, 5 minute time out schedule in three test sessions. Subjects were 10 women and 21 men with a history of either cocaine abuse or dependence who were not currently seeking treatment. Women and men self-administered similar amounts of cocaine. None of the subjective effects measures showed a significant main effect of sex during the cocaine self-administration session. Significant interactions were observed for subjective ratings of 'high' (sex x time) and 'stimulated' (sex x time x dose), with women reporting lower ratings over time/doses than men. Relative to men, cocaine produced dose- and time-dependent increases in feelings of hunger (i.e., reduced appetite suppression) in women. Systolic and diastolic blood pressures showed different patterns of change in men and women, with women showing less robust cocaine-induced increases than men. Taken together, these findings suggest that women and men may differ in their subjective and cardiovascular responses to self-administered cocaine. Further research that prospectively controls for hormonal influences upon these measures is needed.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Trastornos Relacionados con Cocaína/epidemiología , Adulto , Peso Corporal , Enfermedades Cardiovasculares/diagnóstico , Trastornos Relacionados con Cocaína/economía , Trastornos Relacionados con Cocaína/rehabilitación , Electrocardiografía , Femenino , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Autoadministración , Distribución por Sexo , Adulto Joven
17.
Psychiatry Res ; 261: 61-67, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29287237

RESUMEN

Inhalants, which are neurotoxic central nervous system (CNS) suppressants, are frequently abused by young adults. Unlike other CNS depressants, including alcohol and opiates, no treatment is currently approved for inhalant dependence. In this report, a novel approach of substitution treatment for inhalant addiction was explored in a double-blinded, randomized, controlled crossover design to examine the effects of inhalation of essential oil and perfume on the reduction of cue-induced craving for inhalant in thirty-four Thai males with inhalant dependence. The craving response was measured by the modified version of Penn Alcohol Craving Score for Inhalants (PACS-inhalants). The participants (mean age ± SE = 27.9 ± 1.4) in this trial had used inhalant for 5.8 ± 1.1 years. Cravings could be induced in all participants by visual cues as assessed by ^50% increases in inhalant craving levels. Generalized estimating equations showed a significant suppressant effect of essential oil, but not perfume, on the craving response as compared with baseline cue-induced craving. Moreover, essential oil, but not perfume, had significant effects on physiological responses including decreasing pulse rate. It is concluded that inhaling essential oil as a substitution treatment for inhalant may be used as part of treatment programs for reducing inhalant craving.


Asunto(s)
Conducta Adictiva/tratamiento farmacológico , Ansia/efectos de los fármacos , Abuso de Inhalantes/tratamiento farmacológico , Lavandula , Aceites Volátiles/administración & dosificación , Administración por Inhalación , Adulto , Conducta Adictiva/diagnóstico , Conducta Adictiva/psicología , Ansia/fisiología , Estudios Cruzados , Señales (Psicología) , Método Doble Ciego , Humanos , Abuso de Inhalantes/diagnóstico , Abuso de Inhalantes/psicología , Masculino , Adulto Joven
18.
J Addict Med ; 12(2): 92-98, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29176447

RESUMEN

OBJECTIVES: Use of methamphetamine (MA) commonly co-occurs with the use of other substances. The present study aims to examine substance initiation patterns of other substances, including alcohol, nicotine, inhalants, and cannabis (OTH), in MA users and its consequence on the time lag of MA dependence. METHODS: Sociodemographic, environmental, and clinical data were obtained from MA users at a Thai substance treatment center. The Semi-Structured Assessment for Drug Dependence and Alcoholism was employed to diagnose drug dependence. RESULTS: Of 991 MA users, 52.6% were males, and the average age was 26.8 ±â€Š7.1 years. The mean age of first MA use (18 years) was greater than the mean age of first use of alcohol (17 years), nicotine (16 years), and inhalants (15 years) (P < 0.001), but was comparable with the mean age at the first use of cannabis (P > 0.05). Family history of MA use and nicotine dependence were associated with early MA onset. Participants who used MA as their first drug (MA>OTH) were more likely to be female and less likely to smoke intensely and to be exposed to severe traumatic events than those who used MA later than other substances (OTH>MA). The time lag from age at onset of MA use to MA dependence was shorter in OTH>MA than in MA>OTH (3 vs 5 years; χ = 5.7, P = 0.02, log-rank test). CONCLUSIONS: A higher proportion of women was observed in MA>OTH than in OTH>MA. The use of other substances before MA increases the individual's vulnerability in shortening the interval between age at onset of MA use and MA dependence in a substance treatment cohort.


Asunto(s)
Alcoholismo/epidemiología , Trastornos Relacionados con Anfetaminas/epidemiología , Metanfetamina/efectos adversos , Tabaquismo/epidemiología , Adolescente , Adulto , Edad de Inicio , Comorbilidad , Femenino , Humanos , Estimación de Kaplan-Meier , Modelos Logísticos , Masculino , Factores Sexuales , Tailandia/epidemiología , Factores de Tiempo , Adulto Joven
19.
Psychiatry Res ; 270: 34-40, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30243130

RESUMEN

Pharmacological treatments for alcohol use disorder show a modest effect, and they are unavailable in certain countries. The study's aim is to investigate the effects of gabapentin on alcohol drinking. One hundred twelve Thai individuals with alcohol dependence and very high alcohol consumption were randomly assigned to either of two groups: gabapentin treatment or placebo. Oral treatment with at least 300 mg of gabapentin per day or placebo was administered once a day for twelve weeks. The alcohol drinking pattern was assessed by means of the timeline followback method. The drinking behaviours of the two groups were compared by means of the Poisson repeated measures model and Generalized Estimating Equations (GEE) analysis. Twenty subjects (35.7%) from the gabapentin group and 14 subjects (25.0%) from the placebo group completed the study protocol. The participants in the gabapentin group did not differ from those in the placebo group with respect to demographics or baseline alcohol drinking behaviour. After follow-up, the gabapentin group showed a lower percentage of heavy drinking days per week than the placebo group (p < 0.005). GEE analysis showed treatment by time interaction on lowering drinking days within a week (p < 0.05). In conclusion, gabapentin may be used to reduce alcohol-drinking behaviours.


Asunto(s)
Alcoholismo/prevención & control , Antagonistas de Aminoácidos Excitadores/farmacología , Gabapentina/farmacología , Hospitalización , Prevención Secundaria , Adolescente , Adulto , Anciano , Antagonistas de Aminoácidos Excitadores/administración & dosificación , Femenino , Gabapentina/administración & dosificación , Humanos , Masculino , Persona de Mediana Edad , Tailandia , Adulto Joven
20.
Psychiatr Clin North Am ; 41(2): 305-318, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29739528

RESUMEN

Psychodynamic psychiatry remains a challenging subject to teach in underserved areas, where enthusiasm to learn is substantial. Besides logistical and psychiatric workforce shortcomings, sensible cultural adaptations to make psychodynamic psychiatry relevant outside of high-income countries require creative effort. Innovative pedagogical methods that include carefully crafted mentoring and incorporate videoconferencing in combination with site visits can be implemented through international collaborations. Emphasis on mentoring is essential to adequately train future psychodynamic psychotherapy supervisors. Examples of World Psychiatric Association initiatives in countries such as Indonesia, Iran, Malaysia, and Thailand are presented as possible models to emulate elsewhere.


Asunto(s)
Educación Basada en Competencias , Internado y Residencia/normas , Psiquiatría/educación , Psicoterapia Psicodinámica , Competencia Clínica/normas , Educación Basada en Competencias/métodos , Educación Basada en Competencias/normas , Países en Desarrollo , Salud Global , Humanos , Cooperación Internacional , Psicoterapia Psicodinámica/educación , Psicoterapia Psicodinámica/normas
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