Publications by authors named "Pokhrel N"

Due to the increased prevalence of plastic pollution globally, atmospheric deposition of microplastics (MPs) is a significant issue that needs to be better understood to identify potential consequences for human health. This study is the first to quantify and characterize atmospheric MP deposition in the Eastern United States. Passive sampling was conducted at two locations within the Eastern United States, specifically in remote South Central Appalachia, from March to September 2023.

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Background: Inguinal hernias are encountered commonly, but there is a lack of uniformity and standardization in repair techniques. There are a variety of repair methods, from open methods to laparoscopic approaches. The available laparoscopic techniques that exist for inguinal hernia repair are transabdominal preperitoneal (TAPP) repair and totally extraperitoneal (TEP) repair.

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Introduction: Fournier's gangrene, a polymicrobial infection affecting the scrotum and perineal area, predominantly affects elderly males, presenting challenges in diagnosis and management. This report examines two cases, with a focus on the rare outcome of bilateral orchidectomy.

Case Presentation: A 69-year-old diabetic male presented with severe penile and scrotal pain, leading to the diagnosis of Fournier's gangrene.

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The likelihood of antimicrobial failure in COVID-19 patients with bacterial superinfection arises from both phenotypic (biofilms) and genotypic mechanisms. This cross-sectional study aimed to determine the inhibitory concentrations of quinolones-nalidixic acid, norfloxacin, ciprofloxacin, ofloxacin, and levofloxacin-in biofilm formers (minimum biofilm inhibitory concentration [MBIC]) and nonformers (minimum inhibitory concentration [MIC]) and correlate inhibitory concentrations with plasmid-mediated quinolone resistance (PMQR) genes in quinolone-resistant bacteria isolated from COVID-19 inpatients. Quinolone-resistant bacteria (n = 193), verified through disc diffusion, were tested for quinolone inhibitory concentrations using broth microdilution and biofilm formation using microtiter plate methods.

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Adult T cell leukaemia (ATL), caused by infection with human T- lymphotropic virus type 1 (HTLV-1), is often complicated by hypercalcemia and osteolytic lesions. Therefore, we studied the communication between patient-derived ATL cells (ATL-PDX) and HTLV-1 immortalized CD4+ T cell lines (HTLV/T) with osteoclasts and their effects on bone mass in mice. Intratibial inoculation of some HTLV/T leads to a profound local decrease in bone mass similar to marrow-replacing ATL-PDX, despite the fact that few HTLV/T cells persisted in the bone.

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Article Synopsis
  • Hypereosinophilic syndrome is a rare condition in children that can cause respiratory distress and affect multiple organs, making accurate diagnosis crucial.
  • Immediate treatment with corticosteroids is necessary to stabilize the patient and prevent further organ damage.
  • A case study is presented of an adolescent male with severe eosinophilia affecting his lungs, heart, and abdomen, successfully treated with steroids and anthelmintics, emphasizing the need for prompt identification and management of the syndrome.
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Pecan (), an economically important deciduous tree, bears commercially valuable nutritional nuts. Spring freezes in April can severely injure pecan buds, decreasing bloom, and fruit set. This study determined how low temperatures affect pecan buds/flowers at different growth stages in several pecan scion/rootstock combinations.

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  • Bovine tuberculosis (bTB) is a chronic disease in cattle that threatens public health and causes economic loss, being less common in developed countries but still prevalent in regions like Africa, Asia, and the Middle East.
  • In this study in eastern Bhutan, researchers used a sampling method to test 971 cattle for bTB, finding a seroprevalence of 2.57%, but a true prevalence of only 0.91% after adjustments.
  • The study concluded that while no significant risk factors were identified, more comprehensive testing and sampling are needed to better understand and control bTB in Bhutanese cattle populations.
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The mechanisms of hepatic stellate cell (HSC) activation and the development of liver fibrosis are not fully understood. Here, we show that deletion of a nuclear seven transmembrane protein, TM7SF3, accelerates HSC activation in liver organoids, primary human HSCs, and in vivo in metabolic-dysfunction-associated steatohepatitis (MASH) mice, leading to activation of the fibrogenic program and HSC proliferation. Thus, TM7SF3 knockdown promotes alternative splicing of the Hippo pathway transcription factor, TEAD1, by inhibiting the splicing factor heterogeneous nuclear ribonucleoprotein U (hnRNPU).

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Background: Low back pain due to disc herniation is a common problem causing frequent hospital visits and loss of working days with major socio-economic impact. Conservative treatments like analgesics, physiotherapy do not work in all patients. Surgical treatment has been the mainstay of treatment when indicated but is associated with anesthetic and surgical complications.

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Background: Traumatic cervical spinal injuries can severely affect respiratory function and cause significant morbidity and mortality. The typical respiratory morbidity in cervical spine injury is Atelectasis, Ventilator-associated pneumonia, acute respiratory distress syndrome and delayed weaning, etc. The study aims to see the prevalence of respiratory morbidity as well as mortality associated with cervical spine injury.

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Introduction: Ileocecal knot syndrome, a rare cause of small bowel obstruction where the ileum wraps around the cecum, poses a significant challenge for preoperative diagnosis. Prompt intervention is crucial due to the risk of rapid bowel deterioration and increased mortality.

Case Presentation: A 45-year-old female presented with central abdominal pain associated with vomiting, abdominal distension, and obstipation.

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Article Synopsis
  • * The research found that MerTK expression decreases when osteoblast precursors are stimulated by BMP2, and MerTK-deficient mice showed increased bone volume due to higher bone formation and lower resorption, linked to enhanced signaling pathways in osteoblasts.
  • * The findings suggest that targeting MerTK could be a potential treatment for bone-lytic diseases like periodontitis and osteoporosis, since MerTK deficiency was associated with a reduction in osteoclast differentiation and bone
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Adult T cell leukemia (ATL), caused by infection with human T cell leukemia virus type 1 (HTLV-1), is often complicated by hypercalcemia and osteolytic lesions. Therefore, we studied the communication between patient-derived ATL cells (ATL-PDX) and HTLV-1 immortalized CD4+ T cell lines (HTLV/T) with osteoclasts and their effects on bone mass in mice. Intratibial inoculation of some HTLV/T lead to a profound local decrease in bone mass similar to marrow-replacing ATL-PDX, despite the fact that few HTLV/T cells persisted in the bone.

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Introduction: Blood culture-negative infective endocarditis is the condition in which a causative organism cannot be identified after inoculation of at least three samples using standard blood-culture systems for 7 days. It has a low reported incidence of about 2.5-31%.

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DNA metabolic processes including replication, repair, recombination, and telomere maintenance occur on single-stranded DNA (ssDNA). In each of these complex processes, dozens of proteins function together on the ssDNA template. However, when double-stranded DNA is unwound, the transiently open ssDNA is protected and coated by the high affinity heterotrimeric ssDNA binding Replication Protein A (RPA).

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Measles poses a significant global health threat, exacerbated by the COVID-19 pandemic. Despite the efficacy of two vaccine doses, under-5 mortality rates persist, with over 61 million delayed measles vaccinations worldwide. Nepal, striving to eliminate measles by 2023, faces a resurgence, attributing 1013 cases to inadequate vaccination and healthcare accessibility issues.

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Clinicians face a global challenge treating infections caused by Enterobacteriaceae because of the high rate of antibiotic resistance. This cross-sectional study from the Nepal Armed Police Force Hospital, Kathmandu, Nepal, characterized resistance patterns in Enterobacteriaceae across different antimicrobial classes and assessed incidences of multidrug-resistant (MDR) and extensively drug-resistant (XDR) infections. Enterobacteriaceae from clinical samples were isolated on blood and MacConkey agar, except for urine samples on cysteine lactose electrolyte-deficient agar.

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Silvicultural systems are essential for effective forest management and utilize the resources by conserving biodiversity, health, and valuable services forests offer to society. However, Nepal faces a significant knowledge gap due to the limited data on the effect of silvicultural systems and forest management practices on tree diversity and regeneration. Therefore, this study was conducted to assess the effects of canopy opening on natural regeneration and species diversity of Sal ( Gaertn.

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DNA metabolic processes including replication, repair, recombination, and telomere maintenance occur on single-stranded DNA (ssDNA). In each of these complex processes, dozens of proteins function together on the ssDNA template. However, when double-stranded DNA is unwound, the transiently open ssDNA is protected and coated by the high affinity heterotrimeric ssDNA binding Replication Protein A (RPA).

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Objectives: Reports from other countries have indicated that severe forms and fatal cases of COVID-19 in older adults and people with underlying comorbidities. The aim of this study was to assess the risk factors associated with COVID-19 mortality in Nepal.

Methods: A cross-sectional study was conducted from April 12 to July 23, 2021 to identify the underlying factors associated with COVID-19 deaths.

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Background: Typhoid fever, an infective bacterial disease, is capable of causing fatal systemic infection in humans, and in an era of antimicrobial resistance, it has become of public health importance. This study aimed to investigate the laboratory diagnosis of bloodstream infection, its serotype, antimicrobial resistance pattern, and seasonal variation at a tertiary care children's hospital.

Methods: We undertook a retrospective, cross-sectional study by reviewing hospital-based laboratory records of patients whose blood culture samples were submitted from the outpatient department to the laboratory of a tertiary care children's hospital in Kathmandu, Nepal, from January 2017 to January 2019.

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The amygdala processes positive and negative valence and contributes to addiction, but the cell-type-specific gene regulatory programs involved are unknown. We generated an atlas of single-nucleus gene expression and chromatin accessibility in the amygdala of outbred rats with high and low cocaine addiction-like behaviors following prolonged abstinence. Differentially expressed genes between the high and low groups were enriched for energy metabolism across cell types.

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