Single nucleotide polymorphisms in 5-HT receptors in the etiology of premature ejaculation / Polimorfismos de nucleótido único en receptores 5-HT en la etiología de la eyaculación precoz

Introduction and objectives: Premature ejaculation (PE) is characterized by shorter intravaginal ejaculation latency time than it is acceptable for the patient or partner. It is thought that lifelong PE is a neurobiological dysfunction associated with genetic predisposition and with central serotonin neurotransmission dysfunction in receptors. To contribute to the understanding the genetic etiology of lifelong PE, it was planned to compare the 5-HT2C receptor gene rs3813929, rs518147, 5-HT1A receptor gene rs6295, 5-HT1B receptor gene rs11568817 of lifelong PE patients to healthy controls. Materials and methods: For this purpose, 100 patients with premature ejaculation and 100 healthy controls were included in the study. Blood samples for DNA extraction were obtained. Appropriate procedures were applied to the probes (rs3813929, rs518147, rs6295, rs11568817) suitable for the DNA studied. Results: A statistically significant relationship was found between the rs11568817 polymorphism (p=0.019) in the 5-HT1B receptor gene and the rs518147 polymorphism (p=0.016) in the 5-HT2C receptor gene. Also, no statistically significant relationship was found between 5-HT1A receptor gene rs6295 polymorphism and 5-HT2C receptor gene rs3813929 polymorphism and lifelong PE. Conclusions: The relationship between rs3813929 and rs11568817 polymorphisms with lifelong PE was confirmed. Repeating the study in larger sample groups could be useful in determining the genetic etiology of PE. (AU)

Introducción y objetivos: La eyaculación precoz (EP) se caracteriza por un tiempo de latencia de eyaculación intravaginal más corto de lo que es aceptable para el paciente o para la pareja. Se cree que la EP de por vida es una disfunción neurobiológica asociada con la predisposición genética y con la disfunción central de la neurotransmisión de serotonina en los receptores. Para contribuir a la comprensión de la etiología genética de la EP de por vida, se planificó comparar el gen del receptor 5-HT2C rs3813929, rs518147, el gen del receptor 5-HT1A rs6295 y el gen del receptor 5-HT1B rs11568817 de pacientes con EP de por vida con controles sanos. Materiales y métodos: Para este propósito, se incluyeron en el estudio 100 pacientes con eyaculación precoz y 100 controles sanos. Se obtuvieron muestras de sangre para extracción de ADN. Se aplicaron procedimientos apropiados a las sondas (rs3813929, rs518147, rs6295, rs11568817) adecuadas para el ADN estudiado. Resultados: Se encontró una relación estadísticamente significativa entre el polimorfismo rs11568817 (p=0,019) en el gen del receptor 5-HT1B y el polimorfismo rs518147 (p=0,016) en el gen del receptor 5-HT2C. Además, no se encontró una relación estadísticamente significativa entre el polimorfismo del gen del receptor 5-HT1A rs6295 y el polimorfismo del gen del receptor 5-HT2C rs3813929 y la EP de por vida. Conclusiones: Se confirmó la relación entre los polimorfismos rs3813929 y rs11568817 con EP de por vida. Repetir el estudio en grupos de muestra más grandes podría ser útil para determinar la etiología genética de la EP. (AU)

Single nucleotide polymorphisms in 5-HT receptors in the etiology of premature ejaculation.

INTRODUCTION AND OBJECTIVES: Premature ejaculation (PE) is characterized by shorter intravaginal ejaculation latency time than it is acceptable for the patient or partner. It is thought that lifelong PE is a neurobiological dysfunction associated with genetic predisposition and with central serotonin neurotransmission dysfunction in receptors. To contribute to the understanding the genetic etiology of lifelong PE, it was planned to compare the 5-HT2C receptor gene rs3813929, rs518147, 5-HT1A receptor gene rs6295, 5-HT1B receptor gene rs11568817 of lifelong PE patients to healthy controls. MATERIALS AND METHODS: For this purpose, 100 patients with premature ejaculation and 100 healthy controls were included in the study. Blood samples for DNA extraction were obtained. Appropriate procedures were applied to the probes (rs3813929, rs518147, rs6295, rs11568817) suitable for the DNA studied. RESULTS: A statistically significant relationship was found between the rs11568817 polymorphism (p=0.019) in the 5-HT1B receptor gene and the rs518147 polymorphism (p=0.016) in the 5-HT2C receptor gene. Also, no statistically significant relationship was found between 5-HT1A receptor gene rs6295 polymorphism and 5-HT2C receptor gene rs3813929 polymorphism and lifelong PE. CONCLUSIONS: The relationship between rs3813929 and rs11568817 polymorphisms with lifelong PE was confirmed. Repeating the study in larger sample groups could be useful in determining the genetic etiology of PE.

A distinct neurocognitive profile: unipolar mania.

OBJECTIVE: Despite a growing number of studies reporting patients with a history of mania without depression have several socio-demographic and clinical differences than bipolar disorder patients, unipolar mania is recognized as bipolar I disorder in the most commonly used classification systems. Studies showing that unipolar mania is a separate clinical entity are insufficient in number, and to the best of our knowledge, there has been no study investigating the neuropsychological differences in this area. The aim of this study is to evaluate the neurocognitive differences between unipolar mania, bipolar I disorder and healthy controls, and to reveal the underlying neurocognitive differences. MATERIALS AND METHODS: Cambridge Neuropsychological Test Automated Battery was applied to 18 unipolar mania, 19 bipolar I disorder patients and 21 healthy controls matched for age, sex and education levels. RESULTS: Unipolar mania group had worse performance regarding visual memory and executive functions, and had specific social cognition deficits compared to both bipolar I disorder and healthy control groups. CONCLUSION: The results of our study indicate that unipolar mania might have unique neurocognitive differences compared to bipolar I disorder, which might support the hypothesis that unipolar mania is a distinct neurocognitive disorder within bipolar spectrum disorders.

Cognitive attentional syndrome and metacognitive beliefs as potential treatment targets for metacognitive therapy in bipolar disorder.

Most treatment guidelines emphasize the use of psychotropic drugs for both the acute and maintenance treatment of bipolar disorder (BD). However, relying only on psychotropics without adjunctive psychosocial interventions may be insufficient in treating patients with BD. Given its unique view in the explanation of psychopathological states, metacognitive therapy (MCT) might be helpful for BD. Metacognitive theory posits that psychopathology is a result of the cognitive attentional syndrome (CAS) and that it is influenced and maintained by dysfunctional metacognitive beliefs, perseverative thinking, attentional biases, and dysfunctional coping strategies. In this review, literature data regarding these areas in BD are examined. Studies suggest that perseverative thinking might be among the emotion regulation strategies endorsed in individuals with BD. Regarding attentional biases, literature data show that state-dependent, mood-changing attentional biases and a ruminative self-focused attention are present. Studies also suggest that cognitive self-consciousness is higher in BD compared to controls. It is seen that maladaptive coping strategies are frequently reported in BD, and that these strategies are associated with depression severity, negative affect and relapse risk. Studies focusing on dysfunctional metacognitive beliefs in BD reported that individuals with BD had higher scores for negative metacognitive beliefs, self-consciousness, need to control thoughts, and a lack of cognitive confidence. Also, dysfunctional metacognitive beliefs were associated with depressive symptomatology. These findings suggest that the components of CAS and dysfunctional metacognitive beliefs are evident in BD. For a subgroup of patients with BD who fail to respond to evidence-based psychopharmacological and adjunctive psychotherapeutic interventions, MCT might be an alternative way to consider as a treatment option. In conclusion, taken the available data together, we propose a sequential treatment protocol for BD, mainly based on the MCT treatment plan of depressive disorders.

The role of cognitive functions in the diagnosis of bipolar disorder: A machine learning model.

BACKGROUND: Considering the clinical heterogeneity of the bipolar disorder, difficulties are encountered in making the correct diagnosis. Although a number of common findings have been found in studies on the neurocognitive profile of bipolar disorder, the search for a neurocognitive endophenotype has failed. The aim of this study is to separate bipolar disorder patients from healthy controls with higher accuracy by using a broader neurocognitive evaluation and a novel machine-learning algorithm. METHODS: Individuals who presented to the Bipolar Outpatient Clinic of the Medical Faculty of Eskisehir Osmangazi University and met the inclusion criteria of the research are included in the study. Six neurocognitive tests from the CANTAB test battery were used for neurocognitive evaluation, Polyhedral Conic Functions algorithm was used to classify the participants. RESULTS: Bipolar disorder patients differentiated from healthy controls with an accuracy of 78 %. DISCUSSION: Our study presents a prediction algorithm that separates bipolar disorder from healthy controls with high accuracy by using CANTAB neurocognitive battery.

[The Effect of Chronic Cigarette Use on Cognitive Function]. / Kronik Sigara Kullaniminin Bilissel Islevler Üzerine Etkisi.

OBJECTIVE: In this study, we aimed to investigate the effect of chronic cigarette smoking on the cognitive function in people who have no other mental or physical illness other than tobacco use disorder. METHOD: The study was carried out on three groups: smokers (n = 71), former smokers (n = 39), and non-smokers (n = 49). The Wisconsin Card Sorting Test (WCST), Stroop Color and Word Test (ST), Trail Making Test (TMT), Auditory Verbal Learning Test (AVLT), and Serial Digit Learning Test (SDLT) were applied to the 3 groups participating in the study. Groups were compared with the Three-Factor Covariance Analysis. RESULTS: Stroop test 4th card time score which determined the basic level of color discourse in the smoker group was significantly higher than the non-smoker group. The Trail Making Test-B time scores were significantly higher in the smoker group than the non-smoker group. And Trail Making Test-B time points were significantly higher in the former smoker group than nonsmoker group. Auditory Verbal Learning Test - verbal learning scores were lower in the smoker group than the non-smoker and former smoker group. There was no significant difference in verbal learning scores between the non-smoking and former smoker groups. The neurocognitive deficits in smokers appear to be related to dose and duration. CONCLUSION: This study suggests that auditory verbal memory, visualspatial processing, and attention areas may be a selective area of disability in smokers. A major limitation is the fact that general cognitive performance levels of participants was not assessed by a general criteria such as Wechsler Adult Intelligence Scale (WAIS).

The risk factors of possible PTSD in individuals exposed to a suicide attack in Turkey.

The aims of this study were to determine both the rate of possible PTSD in individuals who were exposed to a suicide attack in Ankara, Turkey, and the factors that relate to the elevated risk for PTSD in individuals who survived that suicide attack. The researchers carried out the study with 93 participants who had attended a meeting held in Ankara on October 10, 2015. Participants completed a sociodemographic information form, the Traumatic Stress Symptom Checklist (TSSC), the Post-Traumatic Cognitions Inventory, the Beck Depression Inventory (BDI), and the Influence of Perceived Societal Attitudes Questionnaire (IPSAQ). Twenty-three of participants were determined to have possible PTSD (24.7%). Participants who were exposed previously to a suicide attack, who witnessed a life-threatening injury, who had the need for psychological help, and who had suicidal thoughts had significantly higher rates of possible PTSD. The IPSAQ, BDI, and TSSC scores were significantly higher in the participants with possible PTSD. The IPSAQ score was found to be related to the development of possible PTSD. This study demonstrated that in participants who had been exposed to a terrorist attack, the negative impact of perceived societal attitudes toward the victims was related to the possible development of PTSD.