Publications by authors named "Lang B"

Background: Mediastinoscopy was originally applied for lymph node biopsy and mediastinal tumor resection. Improved video imaging with spreadable working channels enabled mediastinoscopy for inspection and tissue biopsy in the superior mediastinum but it is rarely used in minimally invasive esophageal cancer surgery. In this prospective trial, the practicability and security of spreadable video-assisted mediastinoscopic combined with laparoscopic transhiatal esophagectomy (VAME) with video-assisted thoracoscopic esophagectomy (VATE) were compared.

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Although bone fragility may already be present at diagnosis of pediatric acute lymphoblastic leukemia (ALL), routine performance of dual-energy X-ray absorptiometry (DXA) in every child is not universally feasible. The aim of this study was to develop and validate a risk prediction model for low lumbar spine bone mineral density (LS BMD Z-score ≤ -2.0) at diagnosis, as an important indicator for fracture risk and further treatment-related BMD aggravation.

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Periportal and perivenous hepatocytes show zonal heterogeneity in metabolism and signaling. Here, hepatic zonation in mouse liver was analyzed by non-targeted mass spectrometry (MS) and by the antibody-based DigiWest technique, yielding a comprehensive overview of protein expression in periportal and perivenous hepatocytes. Targeted immunoaffinity-based proteomics were used to substantiate findings related to drug metabolism.

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Introduction: Corona-virus Disease 2019 (COVID-19) has had a huge impact on the delivery of healthcare worldwide, particularly elective surgery. There is a lack of data regarding risk of postoperative COVID-19 infection in children undergoing elective surgery, and regarding the utility of pre-operative COVID-19 testing, and preoperative "cocooning" or restriction of movements. The purpose of this present study was to examine the safety of elective paediatric Otolaryngology surgery during the COVID-19 pandemic with respect to incidence of postoperative symptomatic COVID-19 infection or major respiratory complications.

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Article Synopsis
  • The study examines the incidence and effects of bacterial foodborne infections in solid organ transplant recipients in Switzerland, following 4,405 patients from 2008 to 2018.
  • Out of the infections identified, Campylobacter was the most common pathogen, accounting for 88%, and Salmonella infections were more likely to result in severe complications.
  • The findings highlight that these infections are late post-transplant issues, stressing the importance of following food-safety measures to reduce morbidity in SOT recipients.
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Food quality certifications have been widely promoted for sustainable goals and addressing consumers' increasing concern for food safety. However, these mechanisms have achieved varied success in practice. Prior research notes the importance of certification and certifying agencies in making tangible an invisible process to build consumer trust in certified food.

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Background: Bone marrow-derived mesenchymal stem cells (BMSCs) transplantation has been demonstrated to benefit functional recovery after ischemic stroke, however, the low survival rate of BMSCs in ischemic microenvironment largely limits its use.

Methods: Rat BMSCs (rBMSCs) were isolated from SD rats and treated with oxygen glucose deprivation/reoxygenation (OGD) to mimic ischemic microenvironment in vitro. Expression of mRNAs and proteins were assessed by qRT-PCR and western blot, respectively.

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Purpose: Thyroid dysfunction, including thyroiditis, is well recognized in COVID-19 patients. We evaluated thyroid ultrasonographic features among COVID-19 survivors, which are less well known.

Methods: Adult COVID-19 survivors without known thyroid disorders who attended dedicated COVID-19 clinic underwent thyroid ultrasonography and assessment of thyroid function and autoimmunity.

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A major barrier to HIV eradication is the persistence of viral reservoirs. Resting CD4 T cells are thought to be one of the major viral reservoirs, However, the underlying mechanism regulating HIV infection and the establishment of viral reservoir in T cells remain poorly understood. We have investigated the role of IP-10 in the establishment of HIV reservoirs in CD4 T cells, and found that in HIV-infected individuals, plasma IP-10 was elevated, and positively correlated with HIV viral load and viral reservoir size.

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Real-time polymerase chain reaction (RT-PCR) is used to rule out SARS-CoV-2 prior to surgery, however few studies have evaluated patients with negative testing after surgery. Some 499 patients with negative tests were followed for 14 days after surgery, 39 were retested but none developed positive RT-PCR after operation. The risk of developing a positive RT-PCR after surgery was 0.

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  • Previous studies have confirmed that some commercially available antibodies for the human muscle acetylcholine receptor (ACHR) can be used effectively in flow cytometry, but many antibodies for other nicotinic ACHRs lack sufficient validation.
  • Recent research introduced a flow cytometric immunomodulation assay for diagnosing Autoimmune Autonomic Ganglionopathy (AAG) that uses the monoclonal antibody mab35, known for its specificity towards ganglionic ACHR with α3 subunits.
  • An investigation of seven commercially available antibodies and three synthetic fluorescent conotoxins revealed that only mab35 showed adequate performance for staining the native ganglionic acetylcholine receptor, highlighting the challenges in finding reliable antibodies for this purpose.
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Emerging reports have shown that microRNAs (miRNAs) function as vital regulators in tumor development via modulating gene expression at the posttranscriptional level. Here, we explored the role and underlying mechanism of miR-663a in the proliferation, migration, invasion, and cancer stem cell-like (CSC) properties of glioma cells. Quantitative reverse transcription PCR (qRT-PCR) was implemented to detect miR-663a expression in glioblastoma tissues and the adjacent normal tissues.

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Objectives: Females with sickle cell disease now have a life expectancy that extends well into and beyond their reproductive years. Pregnancy and childbirth are accompanied by high morbidity and mortality in this population, rendering contraception a critical part of their health care.

Study Design: We approached adult female patients of the Hospital of the University of Pennsylvania hematology clinic who were of reproductive age (ages 18-45) and carried a diagnosis of sickle cell disease.

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Heat shock protein 90 (Hsp90), although one of the most essential intracellular chaperones, can also play key roles in the extracellular milieu. Here, we review the properties of extracellular Hsp90 in cellular homeostasis in the heat shock response (HSR), focusing on cells of the central nervous system. Hsp90 can be secreted by microglia as well as other cell types by non-canonical pathways of secretion.

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Background: Genital involvement in patients with chronic inflammatory skin diseases is frequent, yet insufficiently acknowledged.

Objective: To evaluate the prevalence of genital symptoms in psoriasis and chronic urticaria patients, effects on quality of life, physician-patient relations and disease management.

Patients And Methods: 100 patients with psoriasis and 100 with chronic urticaria from our outpatient clinic, as well as 50 healthy controls were included.

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Background: Eliciting a normal electromyography signal has been the usual method to confirm the functional integrity of the recurrent laryngeal nerve during intraoperative nerve monitoring. Given that oscillations of the vocal cord can be detected with trans-laryngeal ultrasound when the ipsilateral recurrent laryngeal nerve is stimulated with the endotracheal tube in situ, we aimed to compare the accuracy and cost of this novel method with the conventional electromyography method.

Methods: Consecutive patients who underwent elective thyroid, parathyroid or neck dissection procedures were included.

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A number of studies have demonstrated that patients with autoimmune disease have lower levels of vitamin D prompting speculation that vitamin D might suppress inflammation and immune responses in children with juvenile idiopathic arthritis (JIA).  The objective of this study was to compare vitamin D levels in children with JIA at disease onset with healthy children. We hypothesized that children and adolescents with JIA have lower vitamin D levels than healthy children and adolescents.

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Objective: This study was designed to explore the effects of systematic psychological nursing (SPN) on the sleep quality of schizophrenic patients with sleep disorders.

Methods: A total of 101 schizophrenic patients with sleep disorders were divided into the control group (50 patients who underwent routine nursing) and the observation group (51 patients who underwent SPN, including health education, psychological nursing, cognitive intervention, reasonable entertainment, and family and social support). One month after the nursing, the sleep quality (the Pittsburgh Sleep Quality Index (PSQI) scores), the improvement in the patients' schizophrenic symptoms (their Positive and Negative Syndrome Scale (PANSS) scores), their sense of self-esteem (their Self-Esteem Scale (SES) scores), their medication compliance (their Morisky Medication Adherence Scale (MMAS) scores), their self-efficacy (their Strategies Used by People to Promote Health (SUPPH) scores), and their quality of life (Generic Quality of Life Inventory (GQOLI)-74 scores) were compared between the two groups.

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Electric field (EF) directed cell migration (electrotaxis) is known to occur in glioblastoma multiforme (GBM) and neural stem cells, with key signalling pathways frequently dysregulated in GBM. One such pathway is EGFR/PI3K/Akt, which is down-regulated by peroxisome proliferator activated receptor gamma (PPARγ) agonists. We investigated the effect of electric fields on primary differentiated and glioma stem cell (GSCs) migration, finding opposing preferences for anodal and cathodal migration, respectively.

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Autoimmune Autonomic Ganglionopathy (AAG) is an uncommon immune-mediated neurological disease that results in failure of autonomic function and is associated with autoantibodies directed against the ganglionic acetylcholine receptor (gnACHR). The antibodies are routinely detected by immunoprecipitation assays, such as radioimmunoassays (RIA), although these assays do not detect all patients with AAG and may yield false positive results. Autoantibodies against the gnACHR exert pathology by receptor modulation.

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Introduction: It is unclear if placing an ultrasound probe along each thyroid cartilage lamina (i.e. the lateral approach) can improve vocal cord (VC) visualization over in the midline (i.

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Schizophrenia (SCZ) is a chronic and severe mental disease that affects around 1% of the population. The precise etiology of SCZ still remains largely unknown, and no conclusive mechanisms are firmly established. Recent advances in epidemiological and clinical investigation support an overwhelmingly strong neurodevelopmental origin for SCZ.

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Context: Osteoporotic fractures are an important cause of morbidity in children with glucocorticoid-treated rheumatic disorders.

Objective: This work aims to evaluate the incidence and predictors of osteoporotic fractures and potential for recovery over six years following glucocorticoid (GC) initiation in children with rheumatic disorders.

Methods: Children with GC-treated rheumatic disorders were evaluated through a prospective inception cohort study led by the Canadian STeroid-induced Osteoporosis in the Pediatric Population (STOPP) Consortium.

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