Publications by authors named "Mathai D"

Article Synopsis
  • Psychedelic-assisted therapy (PAT) with substances like psilocybin and MDMA shows potential for treating depression and PTSD, with possible approval as medicines within the next decade.
  • A study involving 879 U.S. healthcare professionals found most respondents had strong belief in the therapeutic benefits of these substances, but exhibited low knowledge about their risks and uses.
  • Factors such as prior psychedelic use, greater self-rated knowledge, younger age, and specific professional roles influenced openness to using these therapies, highlighting the need for more training and education on the topic.
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Article Synopsis
  • The study aimed to create a predictive model for whether infants born preterm or with low birth weight were fed their mother's own milk (MOM) at discharge, focusing on social determinants of health (SDOH) and maternal-neonatal factors.
  • It analyzed data from 986 neonates at an inner-city hospital, revealing that feeding MOM was less common among non-Hispanic Black mothers compared to Hispanic mothers, a trend that remained consistent before and after a donor human milk program was introduced.
  • The model showed that lower odds of feeding MOM at discharge were linked to factors like higher neighborhood poverty, maternal substance use, and younger maternal age, but these odds did not improve after the implementation of the donor human milk program.
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Background: Improving safe and effective access to ketamine therapy is of high priority given the growing burden of mental illness. Telehealth-supported administration of sublingual ketamine is being explored toward this goal.

Methods: In this longitudinal study, moderately-to-severely depressed patients received four doses of ketamine at home over four weeks within a supportive digital health context.

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Rationale: N-methyl-D-aspartate receptor-mediated dissociatives and serotonergic hallucinogens are being increasingly used in therapeutic interventions that involve nonordinary states of consciousness and may represent a unique mental health paradigm wherein pharmacologically induced experiences are conducive to psychological well-being.

Objective: The aim of this study was to further understand how the phenomenological and health-promoting effects of high-dose dextromethorphan (DXM) compared to psilocybin in the same participants when administered under experimental conditions that are typical of therapeutic psychedelic trials.

Methods: Single, acute oral doses of DXM (400 mg/70 kg), psilocybin (10, 20, 30 mg/70 kg), and inactive placebo were administered under double-blind and psychologically supportive conditions to 20 healthy participants with histories of hallucinogen use.

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Introduction: The classic psychedelic psilocybin, found in some mushroom species, has received renewed interest in clinical research, showing potential mental health benefits in preliminary trials. Naturalistic use of psilocybin outside of research settings has increased in recent years, though data on the public health impact of such use remain limited.

Methods: This prospective, longitudinal study comprised six sequential automated web-based surveys that collected data from adults planning to take psilocybin outside clinical research: at time of consent, 2 weeks before, the day before, 1-3 days after, 2-4 weeks after, and 2-3 months after psilocybin use.

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Cefiderocol (FDC), a novel siderophore drug, is active against Gram-negative bacteria producing carbapenemases, including metallo-beta-lactamases. The objective of this study is to compare the activity of FDC with ceftazidime-avibactam (CZA), CZA/aztreonam (AT) combination, and colistin (CST), in clinical isolates of meropenem-resistant (MER-R) . From the 2,052 clinical specimens submitted for culture testing, 245 .

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Rationale: The relationship between subjective drug experience and antidepressant outcomes for ketamine derivatives is poorly understood but of high clinical relevance. Esketamine is the patented (S)-enantiomer of ketamine and has regulatory approval for psychiatric applications.

Objectives: We examined the relationship between acute dissociation, as measured by the Clinician-Administered Dissociative States Scale (CADSS), and antidepressant efficacy, as measured by the Montgomery-Åsberg Depression Rating Scale (MADRS), for esketamine across the 4-week induction phase of treatment.

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Background Accurate interpretation of antibiotic susceptibility testing (AST) is one of the most crucial functions of the microbiology laboratory. However, its performance depends on a number of critical factors. We conducted a status survey to understand the existing practices in Indian laboratories that have a potential to influence performance of AST.

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Background: Acute undifferentiated fever (AUF) ranges from self-limiting illness to life-threatening infections, such as sepsis, malaria, dengue, leptospirosis and rickettsioses. Similar clinical presentation challenges the clinical management. This study describes risk factors for death in patients hospitalized with AUF in India.

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Background: Given increasing community-based and off-label use of ketamine for psychiatric indications, we examined current informed consent processes from a convenience sample of outpatient ketamine clinics to identify areas of congruence with current evidence and opportunities for growth.

Methods: Using a rubric developed from existing practice guidelines, we conducted an exploratory analysis of informed consent documents (IC-Docs) from 23 American clinics offering ketamine as a psychiatric treatment. Domains assessed included clinical content, procedures, and syntax.

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Background: There was evidence that antibiotic usage increased in hospitalized COVID-19 patients during the early days of the pandemic.

Objective: We assessed the impact of stewardship interventions on antibiotic usage in these patients.

Methods: We designed a quasi-experimental study using an interrupted time series.

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Background: Undergraduate medical students in India participate in various research activities However, plagiarism is rampant, and we hypothesize that it is the lack of knowledge on how to avoid plagiarism. This study's objective was to measure the extent of knowledge and attitudes towards plagiarism among undergraduate medical students in India.

Methods: It was a multicentre, cross-sectional study conducted over a two-year period (January 2018 - December 2019).

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Given that children and adolescents are at critical periods of development, they may be particularly vulnerable to the effects of the COVID-19 pandemic. Using a descriptive phenomenological approach, 71 parents' observations of their child's mental health difficulties were explored. Parents sought out treatment because their children were experiencing significant distress.

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Ketamine is a dissociative drug that has been used medically since the 1970s primarily as an anesthetic agent but also for various psychiatric applications. Anecdotal reports and clinical research suggest substantial potential for ketamine as a treatment in conjunction with psychological interventions. Here, we review historical and modern approaches to the use of ketamine with psychotherapy, discuss the clinical relevance of ketamine's acute psychoactive effects, propose a unique model for using esketamine (one isomeric form of ketamine) with Acceptance and Commitment Therapy (ACT), and suggest considerations for moving medication-assisted psychotherapy forward as a field.

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Background: Sepsis is a global health problem. Limited data exist on the prevalence of sepsis using current definitions in ICUs in India.

Research Question: In adult patients admitted to ICUs in India, what is the prevalence of sepsis using the previous (Second International Consensus Definitions for Sepsis and Septic Shock [Sepsis-2]) and current (Third International Consensus Definitions for Sepsis and Septic Shock [Sepsis-3]) definitions?

Study Design And Methods: Prospective, observational, multicentre, 1-day, cross-sectional study.

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Background: The COVID-19 pandemic has led to increased stress, anxiety, and depression in children. A six-session, parent-led, transdiagnostic, cognitive-behavioral teletherapy program was adapted from an established protocol to help youth aged between 5 and 13 years manage emotional problems during the pandemic.

Methods: One-hundred twenty-nine parents of youth struggling with emotional problems during the COVID-19 pandemic participated in the program.

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Background: Oral human papillomavirus (HPV) infection has been causally linked to a subset of oropharyngeal cancers in Western populations, and both oropharyngeal cancer and oral HPV infection are increased among HIV-positive individuals. India has high incidences of oral and oropharyngeal cancers, and Indian HIV-positive men who have sex with men (MSM) may be at increased risk of developing oropharyngeal cancers. However, there is little information available on the prevalence of oral HPV in this population.

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 Stroke tops the list of causes for acquired disability among adults and is the second leading cause of death worldwide. Evidence from developed countries indicate significant decline in stroke incidence and mortality, attributable to prevention of risk factors in general population. There is limited evidence on risk factors for stroke in rural India.

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Introduction: Obsessive-compulsive disorder (OCD) is a common psychiatric disorder that can be chronic and debilitating if not properly treated. Current first-line treatments for OCD include cognitive-behavioral therapy with exposure and response prevention and serotonin uptake inhibitor medications; however, these therapies are not effective for all individuals.

Areas Covered: Deep transcranial magnetic stimulation (dTMS) has been hypothesized to be an effective alternative for individuals with treatment-resistant OCD.

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Objective: The relationship between ketamine's hallucinogenic- and dissociative-type effects and antidepressant mechanism of action is poorly understood. This paper reviewed the correlation between subjective effects defined by various psychometric scales and observed clinical outcomes in the treatment of patients with Major Depressive Disorder (MDD).

Methods: Based on PRISMA guidelines, we reviewed the dissociative and psychotomimetic mental state induced with ketamine during MDD treatment.

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Background: Tuberculosis (TB) is one of the leading causes of mortality in India. The Revised National Tuberculosis Control Program (RNTCP) is a robust public health system to deal with TB in India. Unless the treated patient comes back to the system with signs and symptoms of TB due to relapse or re-infection, there is no mechanism of follow-up or any method to know the relapse rate in the population.

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Background: The relationship between adolescent cannabis use and susceptibility to persistent cognitive impairments is poorly understood.

Aims: We examined the effects of repeated exposure to Δ-9-tetrahydrocannabinol (THC) on reinforcement-related learning and performance of spatial working memory (WM) tasks of varying difficulty in adolescent monkeys.

Methods: Seven pairs of male adolescent rhesus monkeys, matched for baseline cognitive performance, received vehicle or THC intravenously 5 days/week for 12 months.

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Article Synopsis
  • No FDA-approved medications currently exist for cannabis use disorder (CUD), and this study explored the short-term effects of guanfacine, an α-2A-adrenergic receptor agonist, on withdrawal symptoms in volunteers with CUD.
  • Volunteers (n=7) who met CUD criteria underwent a two-phase study, alternating between guanfacine and a placebo while assessing withdrawal symptoms, sleep, craving, and physiology.
  • While guanfacine did not significantly improve withdrawal symptoms or craving, there were trends indicating it might enhance positive mood and reduce craving-related compulsivity, suggesting that further research on guanfacine for CUD treatment is needed.
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