RESUMEN

Objective: Bipolar disorder (BD) is a highly prevalent, chronic and recurrent mental illness. The smoking rates in patients with BD are much higher than those of the general population, and BD is associated with an increased risk of suicide. An association between smoking and suicidal behavior has been found in the general population, this systematic review examines whether there is evidence of an association between smoking and suicide behavior in patients with BD. Method: A database search was carried out in Medline, Embase, The Cochrane Library, Scopus, and Web of Science, updated until December 31st, 2021, according to the 2020 PRISMA guidelines. We identified prospective and retrospective studies that included patients diagnosed with BD types I, II, and not otherwise specified, and in which smoking and suicidal behavior were correlated. Articles that focused exclusively on other mental disorders were excluded. The Ottawa-Newcastle scale was used to assess the methodological quality of the included articles. Results: Fifteen articles (n = 7,395) met all the inclusion criteria. In nine of these articles, the authors found an association between smoking and suicidal behavior in BD, while in the remaining six articles, this association was not found. A great deal of variability was observed between articles, particularly in the measurement of suicidal behavior and tobacco consumption. The risk of bias, as assessed by the NOS, was high for most of the included articles, except for two papers, whose risk was low. Conclusion: It was not possible to establish a clear relationship between tobacco use and the risk of suicide in BD patients due to the heterogeneity of the articles included in this systematic review, which had different sample sizes and methodological issues. However, both conditions are highly prevalent and have a negative impact on the prognosis of BD. Therefore, a systematic approach is needed, based on accurate measurement of a patient's smoking habits and their risk of suicidal behavior, in order to establish an appropriate therapeutic plan. Additional information: This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors and was registered on PROSPERO with the CRD42022301570 on January 21th 2022.

RESUMEN

Objectives: Hyperprolactinemia (HPRL), defined as plasma prolactin (PRL) >25 ng/ml, is a frequent adverse effect of the treatment with some antipsychotics. The objectives of this study were to determine the prevalence of HPRL among schizophrenic patients treated with long-acting injectable (LAI) antipsychotic drugs at our hospital, and to estimate gender effects in PRL levels in these patients. Methods: This cross-sectional, retrospective, study analyzed 165 psychotic patients treatment with LAI antipsychotics in monotherapy from February to May of 2017 at the Psychiatry Specialized Care Units of the Elche General Hospital (Spain). Results: The prevalence of antipsychotic-derived HPRL in our hospital was 52.41%. Patients treated with LAI formulations of paliperidone and risperidone presented the highest levels of HPRL. A linear regression model showed that female patients presented 24.95 ng/ml (CI95 = 16.85, 33.05) higher levels of PRL than male patients (p < .0001). For women, age >45 years was associated to reduced levels of PRL with respect to younger patients (mean= -18.86 ng/ml, CI95 = -35.59, -2.13, p < .05). Conclusions: Our study confirmed the effects of LAI paliperidone and risperidone on PRL levels. Sex and age were significantly associated with PRL levels in patients treated with LAI antipsychotics, with younger women presenting higher rates of HPRL than men. Key points HPRL is a common adverse effect of the treatment with antipsychotics, detectable in over half of the patients treated in our hospital. Our study showed that treatment with LAI formulations of paliperidone and risperidone resulted in the highest levels of HPRL. Sex and age were significantly associated with PRL levels in patients treated with LAI antipsychotic drugs, with younger women presenting higher rates of HPRL than men.

Asunto(s)

RESUMEN

An association has been found between the C allele of the rs1414334 polymorphism in the HTR2C gene and the metabolic syndrome in psychiatric patients. However, no study has yet evaluated whether this allele is associated with smoking. To assess this issue, therefore, we performed a cross-sectional study with a sample of 166 adult patients treated with atypical antipsychotics in 2012-2013 in a region of Spain. The primary variable was the presence of the C allele of the rs1414334 polymorphism in the HTR2C gene. Secondary variables were the number of pack-years (number of cigarettes per day x number of smoking years ÷ 20), age, gender, schizophrenia, years since diagnosis, metabolic syndrome criteria and SCORE. A stepwise binary logistic regression model was constructed to determine associations between primary and secondary variables and their area under the ROC curve (AUC) was calculated. Of the total sample, 33 patients (19.9%) had the C allele of the polymorphism analyzed. Mean cigarette consumption was 11.6 pack-years. The multivariate analysis showed the following factors as associated with the polymorphism: higher cigarette consumption, being a woman, and not having abdominal obesity. The AUC was 0.706. An association was found between increased cigarette consumption over the years and the presence of the C allele of the rs1414334 polymorphism in the HTR2C gene.

En pacientes psiquiátricos, otros autores han encontrado una asociación entre el alelo C del polimorfismo rs1414334 del gen HTR2C y el síndrome metabólico. Ninguno de ellos ha valorado si este alelo se asocia con el consumo de tabaco, por lo que se decidió realizar un estudio en una región española valorando esta cuestión. Estudio observacional transversal de una muestra de 166 pacientes adultos tratados con antipsicóticos atípicos en 2012-2013. Variable principal: presencia del alelo C del polimorfismo rs1414334 del gen HTR2C. Variables secundarias: número de años-paquete (número de cigarrillos al día x número de años fumando ÷ 20), edad, sexo, esquizofrenia, años diagnosticados del trastorno, criterios de síndrome metabólico y SCORE. Se construyó un modelo de regresión logística binaria por pasos para determinar asociaciones entre la variable principal y las variables secundarias del estudio y se calculó su área bajo la curva ROC (ABC). Del total de la muestra, 33 pacientes presentaron el alelo C del polimorfismo analizado (19,9%). El consumo de tabaco medio fue de 11.6 paquetes-año. El modelo multivariante arrojó los siguientes factores asociados al polimorfismo: mayor consumo tabáquico, ser mujer y no tener obesidad abdominal. El ABC fue de 0,706. Se ha encontrado asociación entre un mayor consumo de tabaco a lo largo de los años y la presencia del alelo C del polimorfismo rs1414334 del gen HTR2C. Se necesitan trabajos que corroboren nuestros resultados.

Asunto(s)

RESUMEN

En pacientes psiquiátricos, otros autores han encontrado una asociación entre el alelo C del polimorfismo rs1414334 del gen HTR2C y el síndrome metabólico. Ninguno de ellos ha valorado si este alelo se asocia con el consumo de tabaco, por lo que se decidió realizar un estudio en una región española valorando esta cuestión. Estudio observacional transversal de una muestra de 166 pacientes adultos tratados con antipsicóticos atípicos en 2012-2013. Variable principal: presencia del alelo C del polimorfismo rs1414334 del gen HTR2C. Variables secundarias: número de años-paquete (número de cigarrillos al día x número de años fumando ÷ 20), edad, sexo, esquizofrenia, años diagnosticados del trastorno, criterios de síndrome metabólico y SCORE. Se construyó un modelo de regresión logística binaria por pasos para determinar asociaciones entre la variable principal y las variables secundarias del estudio y se calculó su área bajo la curva ROC (ABC). Del total de la muestra, 33 pacientes presentaron el alelo C del polimorfismo analizado (19,9%). El consumo de tabaco medio fue de 11.6 paquetes-año. El modelo multivariante arrojó los siguientes factores asociados al polimorfismo: mayor consumo tabáquico, ser mujer y no tener obesidad abdominal. El ABC fue de 0,706. Se ha encontrado asociación entre un mayor consumo de tabaco a lo largo de los años y la presencia del alelo C del polimorfismo rs1414334 del gen HTR2C. Se necesitan trabajos que corroboren nuestros resultados

An association has been found between the C allele of the rs1414334 polymorphism in the HTR2C gene and the metabolic syndrome in psychiatric patients. However, no study has yet evaluated whether this allele is associated with smoking. To assess this issue, therefore, we performed a cross-sectional study with a sample of 166 adult patients treated with atypical antipsychotics in 2012-2013 in a region of Spain. The primary variable was the presence of the C allele of the rs1414334 polymorphism in the HTR2C gene. Secondary variables were the number of pack-years (number of cigarettes per day x number of smoking years ÷ 20), age, gender, schizophrenia, years since diagnosis, metabolic syndrome criteria and SCORE. A stepwise binary logistic regression model was constructed to determine associations between primary and secondary variables and their area under the ROC curve (AUC) was calculated. Of the total sample, 33 patients (19.9%) had the C allele of the polymorphism analyzed. Mean cigarette consumption was 11.6 pack-years. The multivariate analysis showed the following factors as associated with the polymorphism: higher cigarette consumption, being a woman, and not having abdominal obesity. The AUC was 0.706. An association was found between increased cigarette consumption over the years and the presence of the C allele of the rs1414334 polymorphism in the HTR2C gene

Asunto(s)

RESUMEN

Few studies have assessed the association between the rs1414334 C/G polymorphism in the HTR2C gene and the development of the metabolic syndrome in patients treated with atypical antipsychotics. To provide further evidence, a cross-sectional study was conducted in Spain between 2012 and 2013 in 166 patients with these characteristics. In these patients, the association between the polymorphism and the presence of the metabolic syndrome was determined by implementing binary logistic regression models adjusted for variables associated with the metabolic syndrome. We did not confirm previous claims that the C allele of the polymorphism was linked to the metabolic syndrome: the association was in the opposite direction and non-significant. This conclusion held after taking gender and lifestyle variables into account.