CLOZAPINE: PROMISING TREATMENT FOR SUICIDALITY IN BIPOLAR DISORDER

Bipolar disorder is associated with the highest risk of completed suicide of all mental disorders. The suicide mortality of people with bipolar disorder is approximately 25 times higher than the general population. No approved pharmacological strategies for suicidality in bipolar disorder have been introduced so far. There is evidence for anti-suicidal effect of clozapine in schizophrenia. Clozapine with its unique pharmacology, anti-aggressive and anti-impulsive properties is potentially an effective strategy for suicidality in bipolar disorder

SYMPTOM FREQUENCY CHARACTERISTICS OF THE HAMILTON DEPRESSION RATING SCALE OF MAJOR DEPRESSIVE DISORDER IN EPILEPSY

Background: Depressive disorders are common among patients with epilepsy (PWE). The aim of this study was to explore symptom frequencies of 17-item Hamilton Depression Rating Scale (HDRS-17) and recognize the clinical characteristics of Major Depressive Disorder in PWE. Subjects and methods: A sample of 40 adults outpatients with epilepsy and depression was diagnosed using SCID-I for DSM-IVTR and HDRS-17. The total HDRS-17 score was analysed followed by the exploratory analysis based on the hierarchical model. Results: The frequencies of HDRS-17 items varied widely in this study. Insomnia related items and general somatic symptoms items as well as insomnia and somatic factors exhibited constant and higher frequency. Feeling guilty, suicide, psychomotor retardation and depressed mood showed relatively lower frequencies. Other symptoms had variable frequencies across the study population. Conclusions: Depressive disorders are common among PWE. In the study group insomnia and somatic symptoms displayed highest values which could represent atypical clinical features of mood disorders in PWE. There is a need for more studies with a use of standardized approach to the problem

SHORT-TERM KETAMINE ADMINISTRATION IN TREATMENT-RESISTANT DEPRESSION: FOCUS ON CARDIOVASCULAR SAFETY

Ketamine is an anaesthetic and analgesic agent that demonstrates the antidepressive effect in major depression. Several administrations routes, dosing schemas and esketamine are investigated in basic and clinical research with particular focus on treatment-resistant depression (TRD) where drug demonstrates its efficacy where very limited alternatives are available. The majority of ketamine studies in TRD treatment reported no serious adverse events regardless the administration route or regimen. However, the most commonly observed adverse events following ketamine administration in antidepressive doses include general, psychotomimetic, dissociative and hemodynamic ones. The side effects are mild or moderate, well-tolerated and transient. This paper discusses the risks regarding cardiovascular safety in MDD patients in short-term ketamine administration with particular focus on the effect on blood pressure and adverse drug reactions mitigation measures. The increase in systolic (SBP) and diastolic (DBP) blood pressure is dose-dependent and begins shortly after administration peaking at around 30 to 50 minutes with SBP and DBP rise from 10% to 50% above predose values and resolving at approximately 2 to 4 hours after the dose administration. These changes generally are primarily asymptomatic. The elevations in SBP and DBP are observed on each dosing day with multiple administration schema. The treatment with ketamine and esketamine is contradicted in subjects at risk of an increase in blood pressure or intracranial pressure. The current evidence indicates the blood pressure should be assessed prior to dosing with ketamine and hypertensive individuals shall receive effective lifestyle/pharmacologic management prior to treatment. Blood pressure should be monitored after dose administration until blood pressure returns to acceptable levels. If blood pressure remains elevated acute blood pressure management shall be delivered. In patients experiencing symptoms of hypertensive crisis immediate emergency care must be provided. The unmet need for improved pharmacotherapies for TRD means the use of ketamine and esketamine is warranted therapeutic option in patients who fail to achieve a sustained remission of depressive symptoms with drugs with monoamine-based mechanisms of action. Adequate safety measures must be applied when using ketamine/esketamine in TRD subjects with particular focus on somatic comorbidities as the transient drug effect on cardiovascular system is demonstrated and of clinical significance

OVERLAPPING PHENOMENA OF BIPOLAR DISORDER AND EPILEPSY - A COMMON PHARMACOLOGICAL PATHWAY

Background: Studies and data on prevalence, recognition and clinical features of bipolar disorder (BD) in epilepsy remain limited. Still, there is a growing evidence of BD and epilepsy being frequent co-morbid conditions with some features suggesting shared pathophysiological mechanisms that include the episodic course of both conditions, the possible kindling mechanism and the efficacy of some antiepileptic drugs (AEDs) in BD. Subjects and methods: The aim of this paper is to review concepts of overlapping phenomena of bipolar disorder and epilepsy. A literature review of the theoretical bases of the relationship between BD and epilepsy is presented. Conclusions: The comorbidity of epilepsy and mood disorders was a subject of interest of many studies for decades. Bipolar disorder and epilepsy have a number of clinical, biochemical and pathophysiological features in common. Bipolar disorder in epilepsy, excluding the ictal or periictal symptoms, can be categorized using standardized measures. Standardized psychiatric interview procedures based on DSM criteria like SCID-I or MINI provide comprehensive way to diagnose mood disorders in patients with epilepsy

IMPULSIVITY IN ANXIETY DISORDERS. A CRITICAL REVIEW

Background: Anxiety symptoms and disorders are common. High comorbidity between anxiety and other psychiatric disorders has been observed in community. Still, the relationship between impulsivity and anxiety disorders is controversial and not well explored. Material and methods: The aim of this paper is to review measures of trait impulsivity in anxiety disorders. A literature review of the theoretical bases of the relationship between anxiety disorders and impulsivity is presented. Results: Impulsivity is a key feature of numerous psychiatric disorders. Traditional conceptualizations suggest that impulsivity might display a negative relationship with anxiety. However, an association of impulsivity in patients with anxiety disorders is present. Some studies support proposition that anxiety may influence impulsivity in individuals with predisposition toward behavioural disinhibition. Conclusion: There is a link between anxiety and impulsivity in psychiatric patients characterized by problems with impulse control (e.g. pathological gambling, self-harming behaviour, eating disorders), mood disorders and anxiety disorders. Behavioural and pharmacological interventions for decreasing impulsivity may effectively be used in the treatment

CORTISOL AS AN INDICATOR OF HYPOTHALMIC-PITITUARY-ADRENAL AXIS DYSREGULATION IN PATIENTS WITH PANIC DISORDER: A LITERATURE REVIEW

Dysregulation of hypothalamic–pituitary-adrenal axis (HPA) is seen in numerous mental disorders. Data of HPA axis disturbance in panic disorder are inconsistent. In panic disorder HPA axis hyperactivity has been observed with elevated cortisol levels. However, hypocortisolism has also been noted. Salivary cortisol as a biomarker of HPA-axis activity has received special attention. The aim of this paper is to review the findings on cortisol levels in panic disorder

IMPULSIVITY AND PANIC DISORDER: AN EXPLORATORY STUDY OF PSYCHOMETRIC CORRELATES

Background: Impulsivity is associated with a wide variety of psychiatric disorders. However, the relationship between anxiety and impulsivity is not well explored. The objective of this study was to examine whether anxiety symptoms correlate with impulsivity in patients with panic disorder. Subjects and methods: We examined 21 psychotropic drug-naïve patients with panic disorder recruited from the outpatient setting. The severity of Panic Disorder was assessed with Panic and Agoraphobia Scale (PAS)-clinical rating version. Impulsivity was evaluated with Barratt Impulsiveness Scale, 11th version (BIS-11). Results: Our findings indicate the correlation between specific dimensions of impulsivity and selected subscales of Panic and Agoraphobia Scale. The positive correlation between attentional and non-planning dimensions of impulsivity, ‘disability’ and ‘worries about health’ in drug-naïve patients with PD was observed. Conclusions: The findings corroborate with the prior reports of higher impulsivity trait among patients with anxiety disorders

SHORT-TERM KETAMINE ADMINISTRATION IN TREATMENT-RESISTANT DEPRESSION PATIENTS: FOCUS ON ADVERSE EFFECTS ON THE CENTRAL NERVOUS SYSTEM

Major depressive disorder (MDD) is a recurrent, incapacitating psychiatric illness which will be the second most disabling disease worldwide by the year 2020. There is a rising promise in a N-methyl-D-aspartate (NMDA) receptor antagonist, ketamine, which may be used in the treatment of resistant depression. Many of the studies are in favor of the drug, even in single dose application, with effects appearing in minutes to hours from administration. However, there is a need to evaluate the benefits and risks regarding psychomimetic, psychiatric, neurologic, and cognitive adverse effects of ketamine administration. The most distressing symptoms which appear most frequently during ketamine administration are dissociative symptoms, which can be quantified as a CNS adverse drug reaction. Results generally show that a single infusion of ketamine is efficacious and welltolerated, while dissociative symptoms tend to abate within 2 hours after ketamine administration. As studies show single doses of ketamine should be definitely considered as an option in TRD patients with/without suicidal thoughts, even though it could not provide remission, or the effect could be temporary, but improving patients’ quality of life by reducing depressive symptomatology should be a major asset while considering this particular procedure, particularly in inpatients

SEX-SPECIFIC DIFFERENCES IN COGNITIVE FUNCTIONING AMONG SCHIZOPHRENIC PATIENTS

Background: Cognitive deficits in schizophrenia are regarded by many psychiatrist as an important symptom, which requires appropriate treatment and rehabilitation. There are different conditions, which may have an influence on cognitive impairment in schizophrenic patients. One the factors differentiating subgroups of schizophrenic patients when neuropsychological functioning is analyzed is sex. Subjects and methods: This Review was focused on cognitive functioning of schizophrenic patients of different sexes. In order to achieve this result PubMed was searched using following terms: cognitive functions, schizophrenia, gender differences, sex hormones, memory, attention, neuropsychological, psychopatological symptoms. Results: Most of the analyzed papers reflecting the cognitive differences between men and women suffering from schizophrenia postulate a worse performance in neuropsychological test by male patients. However according to some authors there are no gender differences in cognitive functioning in schizophrenic patients or those differences are not clinically significant. Conclusions: The problem of sex-specific differences in cognitive functioning in patients in schizophrenia needs further investigation