Publications by authors named "Kumar Ashok"

Targeted drugs have revolutionized the treatment of advanced non‑small cell lung cancer (NSCLC). However, the understanding of how cardiac comorbidity and toxicity affect the clinical outcomes of patients following targeted therapy remains limited. In a 14‑year cohort, cardiac comorbidities and toxicities among patients with stage‑IV NSCLC treated with targeted therapy were identified.

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Purpose: This study aimed to determine the rate of retained metallic intraocular foreign bodies (IOFBs) following torsional phacoemulsification cataract surgery by an experienced surgeon and elucidate related surgical factors, particle origin theories from existing literature, and postoperative visual impact.

Methods: An observational study was conducted on 300 consecutive cases of cataract who underwent torsional phacoemulsification by a single surgeon using two-handed stop-and-chop technique. The incidence of retained IOFBs was observed and correlated with the surgical parameters and the density of cataract.

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Caspase-6 (CASP6) is an effector caspase that has been marked to possess various pathological attributes associated with neurodegeneration. It is widely expressed in the neurodegenerative brain and peripheral tissues. It plays a vital role in apoptotic cell death and also performs non-apoptotic functions like axon pruning which contribute to the degeneration of neurons.

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  • The unfolded protein response (UPR) in skeletal muscle is activated during stress, but its role in muscle regeneration is not well understood.
  • In a study, researchers found that the gene XBP1, crucial for the UPR, is vital for muscle regeneration, as its absence hinders recovery in adult mice.
  • Analysis revealed that XBP1 affects both muscle cell function and the behavior of surrounding non-muscle cells, indicating that it plays a key role in muscle repair through multiple mechanisms.
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This systematic review was carried out to appraise the evidence regarding the brassiere-wearing practices and problems faced by breast cancer survivors. An electronic search was carried out across eight databases such as PubMed, Scopus, Web of Science, Science Direct, Google Scholar, Embase, CINAHL and ProQuest. Two researchers independently screened the studies for their eligibility and study quality.

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Aims And Background: Combination of different noninvasive caries arresting approaches may improve the effectiveness and success rate of individual procedures for caries management. The purpose of this study was to evaluate clinical and radiographic success rate of a combination of 38% silver diamine fluoride (SDF) application and Hall technique (HT) for the management of dentinal caries in primary molars and compare it with conventional stainless steel crown (SSC) restoration.

Materials And Methods: Children aged 4-8 years, having carious primary molars with the International Caries Detection and Assessment System (ICDAS) score of 5 or 6, were randomly assigned to treatment group A or B.

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  • The study examined the use of fungal endophytes to discover bioactive compounds, focusing on a phenolic compound called 5-methylmellein found in a specific endophytic fungus.
  • This compound was analyzed through various methods and showed promising antifungal activity against several plant pathogenic fungi, with effective inhibition rates recorded.
  • In tests on apples and grapes, 5-methylmellein significantly decreased fruit decay compared to untreated controls, highlighting its potential as an eco-friendly solution for agricultural pest management.
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Objectives: Choledochal cyst excision (CDCE) with hepaticojejunostomy is standard of care in choledochal cysts. Complications related to inadequate healing of distal stump like post-operative pancreatic fistula (POPF) and bleeds have not been addressed in literature. We report two decade experience with these complications following CDCE.

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  • - Intussusception in adults is rare, with ileocolic being the most common type and duodenal intussusception (DI) being the rarest; this study discusses five adult cases of DI, highlighting their presentation, diagnosis, and treatment.
  • - The patients, primarily women aged 18-45, mainly presented with gastric outlet obstruction (GOO) and weight loss, all diagnosed via contrast-enhanced CT scans with benign polyps identified as lead points requiring surgical intervention.
  • - Surgical treatment varied, with some patients receiving local excision and others undergoing more extensive procedures like pancreaticoduodenectomy; post-operative recovery was generally smooth, emphasizing the importance of anatomical knowledge for managing this complex condition.
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  • * A case study details a young man in his early twenties who was hospitalized for Dengue, experiencing dark stools (melena) and vomiting blood.
  • * Despite his platelet count returning to normal, his bleeding continued due to a combination of a bleeding ulcer in the gastroesophageal junction and a deficiency in clotting factor XI, indicating he had Hemophilia C.
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  • - Acrylamide (AR), found in fried and baked foods, can cause neurotoxicity and skeletal issues by triggering oxidative stress and cell death, leading researchers to explore protective compounds like the chalcone analog DC11.
  • - The study reveals that DC11 shows neuroprotective and osteoprotective effects in zebrafish larvae by reducing oxidative stress and apoptosis, improving bone health, and enhancing movement capabilities after AR exposure.
  • - While DC11 demonstrates promising protective qualities, further research on its safety and efficacy in mammals is crucial, along with long-term studies to assess any potential side effects and optimal therapeutic use.
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Circadian rhythms send messages to regulate the sleep-wake cycle in living beings, which, regulate various biological activities. It is well known that altered sleep-wake cycles affect host metabolism and significantly deregulate the host immunity. The dysregulation of circadian-related genes is critical for various malignancies.

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There has been a lot of study and advancement in the area of carbon allotropes in the last several decades, driven by the exceptional and diverse physical and chemical characteristics of carbon nanomaterials. For example, nanostructured forms such as carbon nanotubes (CNTs), graphene, and carbon quantum dots have the potential to revolutionize various industries (Roston 2010; In and Noy 2014; Peng20147 1-29). The global scientific community continues to research in the field of creating new materials, particularly low-dimensional carbon allotropes such as CNTs and carbyne.

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Treatment of large-size bone defects is difficult, and acquiring autografts may be challenging due to limited availability. A synthetic patient-specific bone substitute can be developed by using 3D printing technologies in such cases. In the present study, we have developed photocurable composite resins with poly(trimethylene carbonate) (PTMC) containing a high percentage of biodegradable bioactive strontium-substituted nanohydroxyapatite (SrHA, size 30-70 nm).

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Treatment of critical-size osteochondral (OC) injuries at load-bearing sites has remained a major clinical challenge in orthopedic surgery. This is due to the anisotropic characteristics of OC tissue and the stratified structure of the cartilage. Here, we developed a multilayered OC scaffold by employing cryogelation technology.

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This research explores the design of an infrared (IR) photodetector using mercury cadmium telluride (HgCdTe). It proposes two- and three-dimensional homojunction models based on p-HgCdTe/n-HgCdTe, focusing on applications in the long-wavelength infrared range. The photodetector's performance is analyzed using Silvaco ATLAS TCAD software and compared with analytical calculations based on drift-diffusion, tunneling, and Chu's approximation techniques.

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Non-steroidal anti-inflammatory drugs (NSAIDs) have been researched for their capacity to reduce cancer incidence, primarily due to their COX-2 inhibition properties. However, concerns have arisen regarding the precision of their targeting abilities. Nanoparticle approaches are revolutionizing cancer treatment by enabling targeted drug delivery, which enhances the efficacy and reduces the toxicity of chemotherapy.

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Background: The COVID-19 pandemic overburdened the healthcare system and affected the mental health of healthcare workers. Yoga has proven to improve mental health correlates, within diverse population groups, including healthcare workers. Considering the pandemic-imposed restrictions, this trial was designed to study the feasibility and effect of tele-yoga intervention on burnout, sleep quality, depression, anxiety, stress, mindfulness, and immune markers of healthcare workers on COVID-19 duty.

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  • Drug toxicity, particularly from non-steroidal anti-inflammatory drugs like diclofenac, contributes to chronic liver damage and disrupts bone health by affecting the liver-bone axis.
  • Researchers developed a reliable in vitro liver-bone co-culture model to study the effects of diclofenac on bone and liver interactions, finding optimal culture conditions for both systems.
  • The study revealed that chronic exposure to diclofenac enhances osteoclast-like cell activity in the co-culture, leading to reduced mineral content and stiffness in bone scaffolds, driven by oxidative stress and inflammation rather than diclofenac’s main metabolic products.
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  • * He experienced high fever, vomiting, headache, and drowsiness before being diagnosed with fungal meningitis caused by Apiotrichum mycotoxinivorans.
  • * This specific case marks a rare instance of fungal meningitis linked to this particular fungus and is the first reported case in India.
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Convolutional Neural Networks (CNNs) have received substantial attention as a highly effective tool for analyzing medical images, notably in interpreting endoscopic images, due to their capacity to provide results equivalent to or exceeding those of medical specialists. This capability is particularly crucial in the realm of gastrointestinal disorders, where even experienced gastroenterologists find the automatic diagnosis of such conditions using endoscopic pictures to be a challenging endeavor. Currently, gastrointestinal findings in medical diagnosis are primarily determined by manual inspection by competent gastrointestinal endoscopists.

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Objective: Lactate dehydrogenase is dysregulated in several cancer types. However, the mechanism of its dysregulation in lung cancer is not fully understood. We utilized web-based computational databases to conduct gene expression analysis on LDHA, identified its regulator, and explored their role in the prognosis of lung cancer.

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  • - The study tackles the significant issue of bone and joint infections by introducing a unique treatment method that combines local exosome and antibiotic delivery using a hydroxyapatite-based nanocement to fill spaces left after infection removal.
  • - Researchers created a special antioxidant herbal membrane that encourages the regeneration of periosteum, which is crucial for bone healing, and showed that their scaffolds are safe for the body and effectively fight bacteria.
  • - In experiments using a rat model of osteomyelitis, the treatment not only eradicated residual bacteria but also enhanced bone healing, showing a threefold increase in bone volume and complete formation of periosteal layers, indicating successful bone repair.
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Diabetes has currently acquired the status of epidemic worldwide, and among its various pathological consequences like retinopathy and nephropathy, bone fragility fractures from diabetic osteopathy occurs in later stages and is equally destructive. Chronic hyperglycemia culminates into deteriorating microvasculature and quality of bone, making it prone to fractures. Among these, hip fractures are most common, especially in older diabetic patients apart from underlying neuropathy.

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