Publications by authors named "Tabassum S"

The deposition of aggregated amyloid β (Aβ) is considered as a key factor for Alzheimer's Disease (AD). Previously, we demonstrated that a carboxylated Zn-phthalocyanine (ZnPc) inhibits Aβ fibril formation, consequently protects neurons in culture. This study evaluated the effects of ZnPc on pathological changes in an AD mouse model (J20).

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Traumatic brain injury (TBI) is a leading cause of morbidity and mortality worldwide, with limited effective therapeutic options currently available. Recent research has highlighted the pivotal role of mitochondrial dysfunction in the pathophysiology of TBI, making mitochondria an attractive target for therapeutic intervention. This review comprehensively examines advancements in mitochondrial-targeted therapies for TBI, bridging the gap from basic research to clinical applications.

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Anti-N-methyl-D-aspartate (NMDA) receptor encephalitis is a rare autoimmune disorder that typically presents with neuropsychiatric symptoms and medial temporal lobe involvement. We report the case of a 24-year-old female with no significant medical history, who developed severe anxiety, memory deficits, and confusion over a two-week period. Neurological examination revealed cognitive dysfunction, asymmetric limb movements, and psychosis.

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Several research studies have demonstrated the potential use of cerebrospinal fluid biomarkers such as amyloid beta 1-42, T-tau, and P-tau, in early diagnosis of Alzheimer's disease stages. The levels of these biomarkers in conjunction with the dementia rating scores are used to empirically differentiate the dementia patients from normal controls. In this work, we evaluated the performance of standard machine learning classifiers using cerebrospinal fluid biomarker levels as the features to differentiate dementia patients from normal controls.

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Background & Objective: Blood Stream Infections (BSI) are considered a significant cause of morbidity and mortality in patients with Stevens Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN). We aimed to identify risk factors for BSI upon admission, highlight clinical and microbiological findings and ascertain the frequency of mortality in patients with BSI in SJS/TEN.

Methods: A retrospective cross-sectional study over 12 years (2011-2022) was performed in the department of medicine at a tertiary care hospital in Pakistan.

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This study introduces StressFit, a novel hybrid wearable sensor system designed to simultaneously monitor electromyogram (EMG) signals and sweat cortisol levels. Our approach involves the development of a noninvasive skin patch capable of monitoring skin temperature, sweat pH, cortisol levels, and corresponding EMG signals using a combination of physical and electrochemical sensors integrated with EMG electrodes. StressFit was optimized by enhancing sensor output and mechanical resilience for practical application on curved body surfaces, ensuring accurate acquisition of cortisol, pH, body temperature, and EMG data without sensor interference.

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Takayasu arteritis (TA), a rare large-vessel vasculitis, primarily affects women of childbearing age, causing granulomatous inflammation in the aorta and its major branches. This inflammation can lead to stenosis, aneurysms, or occlusion, with the abdominal aorta, subclavian, and brachial arteries commonly involved. We present the case of a 26-year-old female with TA with a rare involvement of the superior mesenteric artery (SMA).

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Article Synopsis
  • Contrast-induced nephropathy (CIN) is a serious condition that can occur during coronary procedures, increasing patient risks and complications.
  • A systematic review and meta-analysis of 13 randomized controlled trials showed that nitric oxide (NO) donors significantly reduced the occurrence of CIN and serum creatinine levels when compared to a placebo.
  • NO donors were also linked to a lower rate of major cardiac events and overall mortality when administered orally, although IV infusions did not show significant improvements in these areas.
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Transcatheter aortic valve replacement (TAVR) is considered more effective than surgical aortic valve implantation for patients with a small aortic annulus (SAA), however, the comparative efficacy of different transcatheter heart valves (THVs) remains uncertain. A literature search was performed across databases from their inception until June 2024 to identify eligible randomized controlled trials (RCTs) and propensity-score matched (PSM) studies. Clinical outcomes were evaluated using a random-effects model to pool risk ratios (RRs) with 95 % confidence intervals (CIs).

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Multiproduct manufacturing of biotherapeutic proteins generate cleaning-induced protein degradants because of extreme pH and temperature conditions during the cleaning process. Cleaning Acceptance limits are calculated based on the maximum allowable carryover (MAC) assessment of the previously manufactured active pharmaceutical ingredient (API) - or drug product - based on the permitted daily exposure (PDE) of the previously manufactured API into the dose of subsequent product. In this study, we tested a previously determined PDE value for cleaning-induced protein degradants of 650 µg/dose.

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Objective: To determine the frequency of cerebral aneurysm in patients with subarachnoid haemorrhage on CT cerebral angiography.

Methods: This prospective cross-sectional study was conducted at Department of Radiology, JPMC, Karachi from 5 June 2022 to 30 January 2023. Total 176 patients with subarachnoid haemorrhage irrespective of gender were selected.

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This study explores the metal oxide-mediated NH-N reduction process: manganese ammonia oxidation efficiency, influencing factors and its resistance to low-temperature environments in water bodies. After 177d of stabilized startup of an up-flow reactor, NH-N removal efficiency was 63.51 %, total nitrogen (TN) removal rate was 0.

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Introduction: Only a finite number of standard oral health-related quality of life (OHRQoL) measures are available for young children. However, instead of using parents as proxies to report a child's oral health status, children's self-reported oral health measures would be more accurate in providing their own perceptions of oral impacts.

Aim: The study aimed to evaluate the psychometric properties of the Telugu version of the scale of oral health outcomes (SOHO-5T) for 5-year-old children in Telangana.

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Article Synopsis
  • Cardiac sarcoidosis (CS) is a serious condition that can lead to high rates of illness and death, and this study investigates its impact on patients hospitalized with COVID-19.
  • The research analyzed data from over 2.5 million COVID-19 cases, finding that CS patients were generally younger and had more comorbidities compared to those without CS, and they experienced a higher rate of in-hospital cardiac arrest before matching.
  • After matching, CS patients showed a significantly lower risk of acute kidney injury (AKI), but their rates of death, cardiac arrest, mechanical ventilation, and hospital stay length were similar to those without CS, indicating a need for further research on managing COVID-19 in CS patients.
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Article Synopsis
  • Humic acids (HAs) released during thermal hydrolysis pretreatment significantly disrupt anaerobic digestion of waste activated sludge, with their molecular weights influencing various microbial processes.
  • Different sources of HAs have markedly different effects on methane production; for instance, commercial HAs inhibited it by 53.3%, while HAs from raw sludge increased it by 20.5%.
  • The study highlights that larger molecular weight HAs inhibit extracellular enzymes more significantly, while smaller ones impact intracellular enzymes, thus affecting sludge treatment outcomes through their molecular weight variations.
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Hydroxyapatite (HAp) synthesis was achieved through a hydrothermal method involving orthophosphoric acid and calcium hydroxide. Different organic modifiers such as urea, naphthalene, and palmitic acid were applied in the reaction system to modify the crystallite size along with the morphology of HAp. The synthesized HAp was validated X-ray diffraction (XRD) data, Fourier Transform Infrared (FTIR) spectra, Field Emission Scanning Electron Microscopy (FESEM) image, and optical bandgap energy (<6 eV) was determined through UV-vis spectrophotometry.

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As the textile industry expands, more industrial waste effluents are released into natural water streams, prompting the research and development of innovative materials for the remediation of environmental issues. In this research, a direct precipitation and hydrolysis method were used to synthesize ZnO and TiO nanoparticles, respectively that were utilized to investigate the photocatalytic activity of Congo Red (CR) dye. Afterward, the crystallite size was computed from the data of the X-ray diffractometer (XRD), and utilizing several models (Scherrer equation, LSLMSE, Monshi-Scherrer equation, Williamson-Hall model, Size-strain plot method, Halder-Wagner model, Sahadat-Scherrer model).

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Background: The latest guidelines advocate for catheter ablation (CA) over standard medical therapy (SMT) for managing atrial fibrillation (AF) in patients with heart failure with reduced ejection fraction (HFrEF). However, significant knowledge gaps exist regarding the effectiveness of CA vs. SMT in patients with heart failure with preserved ejection fraction (HFpEF).

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Approximately five billion people do not have access to necessary surgical treatment globally and up to 85% of children in LMICs are affected with conditions requiring surgical care by the age of 15 years. It is crucial to identify common surgical conditions in children in Pakistan to inform healthcare professionals and policymakers for effective resource allocation. This representative cross-sectional household survey conducted on children aged 5-10 years assessed existing surgical diseases and healthcare-seeking behaviors in the two largest provinces (Sindh and Punjab) of Pakistan.

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Background: Poliomyelitis is always a great concern in Pakistan and is a public health emergency. COVID-19 and recent floods have increased the challenge.

Aim: This article highlights the situation of polio in Pakistan and also recommends several steps to eradicate the disease as early as possible.

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Amyloid β peptide (Aβ) aggregation and deposition are considered the main causes of Alzheimer's disease. In a previous study, we demonstrated that anionic Zn-phthalocyanine (ZnPc) can interact with the Aβ peptide and inhibit the fibril-formation process. However, due to the inability of anionic ZnPc to cross the intact blood-brain barrier, we decided to explore the interaction of cationic methylated Zn-phthalocyanine (cZnPc) with the peptide.

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Background: Diagnosing cardiac sarcoidosis (CS), which can be associated with arrhythmias and heart failure, remains challenging despite multiple advances over time. The 2014 Heart Rhythm Society (HRS) consensus statement recommends an endomyocardial biopsy (EMB) to establish a definite diagnosis of CS. In the absence of a positive EMB, a diagnosis of probable or presumed CS is made on the basis of clinical and imaging criteria.

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A facile and simple electrochemical composite sensor, CDs-Ag@CuO-GA, prepared from carbon dots stabilized silver nanoparticles and copper oxide, was used as an electrocatalyst and signal amplifier for the non-enzymatic detection of antibiotic traces in food products. The prepared composite demonstrated excellent stability, sensitivity, and cost-effectiveness. The sensor was constructed by modifying a glassy carbon electrode (GCE) with CDs-Ag@CuO-GA, and the electroanalytical response was determined for the precise determination of metronidazole (MTZ) drug traces in milk.

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