Publications by authors named "Narayan Saha"

Article Synopsis
  • Plasmoacanthoma is a rare, benign verrucous lesion that can easily be misdiagnosed as squamous cell carcinoma, creating challenges for both clinicians and pathologists.
  • A case study details a 70-year-old female with a lower lip lesion that resembled cancer, but biopsy and histopathology confirmed it as plasmoacanthoma after initial treatment with corticosteroids failed.
  • A review of existing literature highlighted the importance of understanding the distinct features and similarities of plasmoacanthoma and related conditions to improve diagnosis and management strategies.
View Article and Find Full Text PDF

Understanding the salinity effects on the rural livelihood and ecosystems services are essential for policy implications and mitigations. Salinity-driven modulation in land use and land cover, community traditional occupations, and ecosystem service have been elucidated in the present investigation. The study was carried out in the south-western region of Bangladesh as a representative case using focus group discussions, questionnaire survey, and remote sensing techniques.

View Article and Find Full Text PDF

Copy number variations (CNVs) play a critical role in the pathogenesis of neurodevelopmental disorders (NDD) among children. In this study, we aim to identify clinically relevant CNVs, genes and their phenotypic characteristics in an ethnically underrepresented homogenous population of Bangladesh. We have conducted chromosomal microarray analysis (CMA) for 212 NDD patients with male to female ratio of 2.

View Article and Find Full Text PDF

Temozolomide (TMZ) is one of the best choices for treating glioblastoma. However, due to the short plasma half-life, only 20-30 % brain bioavailability can be achieved using traditional formulations. In the present study, PEGylated liposomes and lyotropic liquid crystals (LLCs) were developed and investigated to prolong the plasma circulation time of TMZ.

View Article and Find Full Text PDF
Article Synopsis
  • * Over 58% reported adverse effects, with common symptoms including soreness at the injection site (71.9%), tiredness (56.1%), and fever (54.4%), primarily affecting younger participants.
  • * Those with diabetes, hypertension, or asthma had a higher risk of experiencing these side effects, highlighting the need for more extensive safety studies to encourage vaccine confidence.
View Article and Find Full Text PDF

Temozolomide (TMZ) is a broad spectrum alkylating agent found effective in the treatment of glioblastoma multiforme, refractory anaplastic astrocytoma, and metastatic melanoma. The major drawback associated with TMZ is pH-dependent stability and short half-life. At physiological pH, it undergoes conversion to MTIC (methyltriazine imidazole carboxamide) and AIC (amino imidazole carboxamide), resulting in only 20-30% brain bioavailability.

View Article and Find Full Text PDF

A basic understanding of the blood-brain barrier (BBB) is essential for the novel advancements in targeting drugs specific to the brain. Neoplasm compromising the internal structure of BBB that results in impaired vasculature is called as blood tumor barrier (BTB). Besides, the BBB serves as a chief hindrance to the passage of a drug into the brain parenchyma.

View Article and Find Full Text PDF

Objective: To determine the prevalence and types of epilepsy in Bangladesh.

Methods: We conducted a nationwide population-based cross-sectional survey among Bangladeshi population of all ages, except children under one month. We surveyed 9839 participants (urban, 4918; rural, 4920) recruited at their households using multistage cluster sampling.

View Article and Find Full Text PDF

This study explored the physical and clinical phenotype of Bangladeshi children with autism spectrum disorder (ASD). A totally of 283 children who were referred for screening and administered Module 1 of the Autism Diagnostic Observation Schedule (ADOS) were included. Overall, 209 met the ADOS algorithmic cutoff for ASD.

View Article and Find Full Text PDF

Although thyroid dyshormonogenesis (TDH) accounts for 10-20% of congenital hypothyroidism (CH), the molecular etiology of TDH is unknown in Bangladesh. Thyroid peroxidase (TPO) is most frequently associated with TDH and the present study investigated the spectrum of TPO mutations in Bangladeshi patients and analyzed the effects of mutations on TPO protein structure through approach. Sequencing-based analysis of TPO gene revealed four mutations in 36 diagnosed patients with TDH including three nonsynonymous mutations, namely, p.

View Article and Find Full Text PDF

Liquid Chromatography tandem mass spectrometry (LC-MS/MS) is used for the diagnosis of more than 30 inborn errors of metabolisms (IEMs). Accurate and reliable diagnosis of IEMs by quantifying amino acids (AAs) and acylcarnitines (ACs) using LC-MS/MS systems depend on the establishment of age-specific cut-offs of the analytes. This study aimed to (1) determine the age-specific cut-off values of AAs and ACs in Bangladesh and (2) validate the LC-MS/MS method for diagnosis of the patients with IEMs.

View Article and Find Full Text PDF
Article Synopsis
  • Heterozygous females with G6PD deficiency can experience serious health issues similar to hemizygous males and homozygous females, especially when exposed to oxidative stress from foods, drugs, or infections.
  • Conventional enzyme assays typically detect G6PD deficiency in males and homozygous females, but may overlook heterozygous females due to a mix of normal and deficient red blood cells.
  • This study demonstrated that high resolution melting (HRM) analysis is effective in identifying G6PD heterozygosity, finding more cases than the enzyme assay alone, which could help avert serious health risks for their newborns.
View Article and Find Full Text PDF

Acute decompensated heart failure (ADHF) is a common reason for admission to the hospital, and readmission is frequent. Multiple factors contribute to rehospitalizations, but inadequate assessment of volume status leading to persistent congestion is an important factor. We sought to determine if focused cardiac ultrasound (FCU) of the inferior vena cava (IVC), as a surrogate of volume status, would predict readmission of ADHF patients after index hospitalization.

View Article and Find Full Text PDF

The study aimed to examine for the first time the spectra of viral and bacterial pathogens along with the antibiotic susceptibility of the isolated bacteria in under-5 children with acute respiratory infections (ARIs) in hospital settings of Dhaka, Bangladesh. Nasal swabs were collected from 200 under-five children hospitalized with clinical signs of ARIs. Nasal swabs from 30 asymptomatic children were also collected.

View Article and Find Full Text PDF

Atypical manifestation of Huntington's disease (HD) could inform ongoing research into HD genetic modifiers not present in the primarily European populations studied to date. This work demonstrates that expanding HD genetic testing into under-resourced healthcare settings can benefit both local communities and ongoing research into HD etiology and new therapies.

View Article and Find Full Text PDF

Accurate assessment of volume status is critical in the management of patients with heart failure (HF). We studied the utility of a pocket-sized ultrasound device in an outpatient cardiology clinic as a tool to guide volume assessment. Inferior vena cava (IVC) size and collapsibility were assessed in 95 patients by residents briefly trained in focused cardiac ultrasound (FCU).

View Article and Find Full Text PDF

Objective: To identify pyridoxine responsive seizures among children with early onset intractable seizures, and to identify pyridoxine-dependency as a subset in this group.

Methods: Patients with neonatal onset idiopathic, intractable seizures were identified over a 6-month period and subjected to a 'pyridoxine trial', at the Pediatric Neurology Clinic of a tertiary-care teaching hospital in New Delhi, India. This consisted of an intravenous infusion of 100 mg of pyridoxine over 10-min with a simultaneous EEG monitoring.

View Article and Find Full Text PDF

Objective: To evaluate the efficacy of clobazam in childhood refractory epilepsy and to characterize the adverse drug reaction profile in the Indian population.

Methods: A cohort of 88 children with 'refractory' epilepsy was started on clobazam as add-on therapy. Diagnosis was established and seizure type recorded.

View Article and Find Full Text PDF

Objective: Since the underlying mechanisms of febrile seizure (FS) having multi-factorial aetiology yet remains unclear, we conducted this prospectively designed cross-sectional study to determine if there was any simultaneous change in zinc (Zn) concentration (conc.) in serum and cerebrospinal fluid (CSF) among the FS children in comparison to their matched non-seizure febrile (NSF) peers.

Methods: Zn concentration (level) in both serum (intravenous blood) and CSF (lumber puncture: LP) of 50 children with FS and 30 NSF peers (serving as control) were measured employing graphite furnace atomic absorbance spectrophotometer.

View Article and Find Full Text PDF