Alzheimer's disease (AD) is a devastating neurodegenerative disease, the most common among the dementing illnesses. The neuropathological hallmarks of AD include extracellular β-amyloid (amyloid precursor protein (APP) deposits, intracellular neurofibrillary tangles (NFT)), dystrophic neuritis and amyloid angiopathy. The mismetabolism of APP and the defective clearance of β amyloid generate a cascade of events including hyperphosphorylated tau (τ) mediated breakdown of microtubular assembly and resultant synaptic failure which results in AD. The exact aetiopathogenesis of AD is still obscure. The preeminent hypotheses of AD include amyloid cascade hypothesis and tau hyperphosphorylation. The amyloid hypothesis states that extracellular amyloid plaques formed by aggregates of Aβ peptide generated by the proteolytic cleavages of APP are central to AD pathology. Intracellular assembly states of the oligomeric and protofibrillar species may facilitate tau hyperphosphorylation, disruption of proteasome and mitochondria function, dysregulation of calcium homeostasis, synaptic failure, and cognitive dysfunction. The tau hypothesis states that excessive or abnormal phosphorylation of tau results in the transformation of normal adult tau into PHF-tau (paired helical filament) and NFTs. Vascular hypothesis is also proposed for AD and it concludes that advancing age and the presence of vascular risk factors create a Critically Attained Threshold of Cerebral Hypoperfusion (CATCH) which leads to cellular and subcellular pathology involving protein synthesis, development of plaques, inflammatory response, and synaptic damage leading to the manifestations of AD. Multiple other aetiological and pathogenetic hypotheses have been put forward including genetics, oxidative stress, dysfunctional calcium homeostasis, hormonal, inflammatory-immunologic, and cell cycle dysregulation with the resultant neurotransmitter dysfunctions and cognitive decline. The available therapeutic agents target only the neurotransmitter dysfunction in AD and agents specifically targeting the pathogenetic mechanisms like amyloid deposition and tau hyperphosphorylation might provide a definite therapeutic edge.

No abstract

No abstract

Background: In addition to the socioeconomic problems, COVID-19 related lockdown may have profound mental health consequences. Aims and Objectives: The objectives were to assess the influence of lockdown on lifestyle, psychosocial stresses, and experienced quality of life (QOL). The study also assesses the association of the socio-demographic variables with lifestyle, psychosocial stress, and QOL. Methodology: An online survey on the lifestyle changes, psychosocial stress, and QOL were conducted using a validated questionnaire via the Google forms platform. The data collected were analysed using parametric and nonparametric tests. Results: The study included 263 respondents. The fear of developing COVID-19 was reported by 67.7%, 31.2% experienced weight gain, internet use was increased in 66.9%, and alcoholism and smoking decreased by 83.3% and 58.8%, respectively. Lockdown upset 48.3% moderately, and 36.1% experienced anxiety, 23.4% feared job loss, and 51.3% had financial worries. 91.1% of the study population reported fair to good QOL. Females showed significantly more religiosity, (Χ 2= 7.81; p= 0.02) did lesser exercise, (Χ 2= 10.9; p= 0.023) and had poor mood. (t=2.68; p=0.009) Older people were less afraid of COVID-19 infection and were less upset by the lockdown. The urban population was more fearful of COVID-19 and were more upset by the lockdown. Conclusion: Lockdown had a major effect on lifestyle and increased psychosocial stress, but people still experienced a fair QOL during this period.

The study showed a high prevalence of FSD in depressed females regardless of type and severity of depression. Depression with medical comorbidities was associated with a significant decrease in desire. Patients who expressed passive death wishes showed improved sexual function and significantly better orgasm.

Context:Psychological factors, such as that exist when we experience pain, can profoundly alter the strength of pain perception.Aim:The study aims to estimate the prevalence of psychiatric disorders, and its association with perception of pain and functional status in chronic patients in palliative care.Materials and Methods:The sample was selected via simple randomisation and post consent were assessed using (1) a semi- structured questionnaire to elicit socio-demographic information and medical data (2) Brief Pain Inventory (3) ICD-10 Symptom Checklist (4) ICD-10-Diagnostic Criteria for Research (DCR) (5) Montgomery Asberg Depression Rating Scale (MADRS) (6) Covi Anxiety Rating Scale (7) Karnofsky Performance Status Scale. Data was analysed using independent sample t test and chi square test.Results:The psychiatric morbidity was 67% with depression and adjustment disorders being the major diagnosis. There was a significant association between psychiatric morbidity pain variables (P = 0.000). Psychiatric morbidity significantly impaired activity, mood, working, walk, sleep, relationship, and enjoyment. There was no association between aetiology of pain, type of cancer, treatment for primary condition and treatment for pain and psychiatric morbidity. The functional status of cancer patients was also poorer in patients with psychiatric morbidity (P = 0.008).Conclusion:There is a high prevalence of psychiatric illness in chronic pain patients of any aetiology. Psychiatric morbidity is associated with increased pain perception, impairment in activity and poor functional status.

Background:People who attempt suicide have certain individual predispositions, part of which is contributed by personality traits.Aims:The present study was conducted to identify the psycho-sociodemographic and personality related factors contributing to suicide attempts.Materials and Methods:104 suicide attempters admitted in various departments and referred to the department of psychiatry of IQRAA Hospital formed the study sample. They were evaluated with a self designed socio-demographic proforma, Eysenck's Personality Questionnaire Revised, Albert Einstein College of Medicine-Impulsivity Coping Scale, and Past Feelings and Acts of Violence Scale.Statistics Analysis:The data was initially analyzed by percentage of frequencies. Association between socio-demographic and selected psychological factors was analyzed using t-test and Chi-square test. Intercorrelation among psychological factors was calculated by Pearson's correlation coefficient “r”.Results and Conclusion:Factors such as young age, being married, nuclear family, feeling lonely and burden to family, inability to solve the problems of day to day life, and presence of psychiatric diagnosis and personality traits such as neuroticism, impulsivity, and violence were contributed to suicide attempt. A significant positive relationship between these factors was also identified. Findings of the present study call the attention of mental health professionals to identify these high risk factors in susceptible individuals and to modify these factors to prevent them from attempting suicide.

No abstract