Publications by authors named "Buchholz E"

Objective: Alcohol use is common in older adults and linked to poor health and aging outcomes. Studies have demonstrated genetic and environmental contributions to the quantity of alcohol consumption in mid-to-late life, but less is known about whether these influences are moderated by sociodemographic factors such as age, sex, and educational attainment. This study sought to better understand sociodemographic trends in alcohol consumption across the second half of the life course and their underlying genetic and environmental influences.

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Background: Plasma neurofilament light chain (NfL) is a promising biomarker of neurodegeneration with potential clinical utility in monitoring the progression of neurodegenerative diseases. However, the cross-sectional associations of plasma NfL with measures of cognition and brain have been inconsistent in community-dwelling populations.

Methods: We examined these associations in a large community-dwelling sample of early old age men (N = 969, mean age = 67.

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f. sp. (Sss) is a soilborne potato pathogen responsible for causing powdery scab on tubers and galls on roots, reducing root water uptake through colonizing root hairs, and vectoring of Potato mop-top virus (PMTV).

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Background: The study explores whether frailty at midlife predicts mortality and levels of biomarkers associated with Alzheimer's disease and related dementias (ADRD) and neurodegeneration by early old age. We also examine the heritability of frailty across this age period.

Methods: Participants were 1,286 community-dwelling men from the Vietnam Era Twin Study of Aging at average ages 56, 62 and 68, all without ADRD at baseline.

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Background: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a severely debilitating condition which markedly restricts activity and function of affected people. Since the beginning of the COVID-19 pandemic ME/CFS related to post-acute COVID-19 syndrome (PACS) can be diagnosed in a subset of patients presenting with persistent fatigue 6 months after a mostly mild SARS-CoV-2 infection by fulfillment of the Canadian Consensus Criteria (CCC 2003). Induction of autoimmunity after viral infection is a mechanism under intensive investigation.

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Background: Autoantibodies against the potassium voltage-gated channel subfamily A member 2 (KCNA2) have been described in a few cases of neuropsychiatric disorders, but their diagnostic and pathophysiological role is currently unknown, imposing challenges to medical practice.

Design / Methods: We retrospectively collected comprehensive clinical and paraclinical data of 35 patients with KCNA2 IgG autoantibodies detected in cell-based and tissue-based assays. Patients' sera and cerebrospinal fluid (CSF) were used for characterization of the antigen, clinical-serological correlations, and determination of IgG subclasses.

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Background And Aims: Smoking is associated with increased risk for brain aging/atrophy and dementia. Few studies have examined early associations with brain aging. This study aimed to measure whether adult men with a history of heavier smoking in early mid-life would have older than predicted brain age 16-28 years later.

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Article Synopsis
  • A standardized method for developing quality indicators (QIs) based on clinical practice guidelines (CPGs) has been established in Germany, addressing the lack of uniformity in the process.
  • The development of this QI Standard involved input from various stakeholders in the German healthcare system through a structured consensus process, utilizing the Delphi method for initial voting and a final conference to agree on recommendations.
  • The resulting QI Standard includes 30 recommendations grouped into six categories, guiding the selection, development, appraisal, adoption, and testing of QIs within CPGs.
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Aims: Deregulation of epigenetic processes and aberrant gene expression are important mechanisms in heart failure. Here we studied the potential relevance of m6A RNA methylation in heart failure development.

Methods And Results: We analysed m6A RNA methylation via next-generation sequencing.

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Aims: Volume overload (VO) and pressure overload (PO) induce differential cardiac remodelling responses including distinct signalling pathways. Extracellular signal-regulated kinases 1 and 2 (ERK1/2), key signalling components in the mitogen-activated protein kinase (MAPK) pathways, modulate cardiac remodelling during pressure overload (PO). This study aimed to assess their role in VO-induced cardiac remodelling as this was unknown.

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Calcium/calmodulin-dependent protein kinase type II delta (CaMKIIδ), the predominant CaMKII isoform expressed in the heart, has been implicated in the progression of myocardial infarction- and pressure overload-induced pathological remodeling. However, the role of CaMKIIδ in volume overload (VO) has not been explored. We have previously reported an activation of CaMKII during transition to HF in long-term VO.

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Neurosurgery residency is daunting and all-consuming to those who undergo it, and the spouses of those residents are not exempt from the challenges it presents. In light of our institution's implementation of a wellness initiative in neurosurgery residency education, the spouses of various participants offer their insights on the program, shedding light on the full extent of its benefits.

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Cetuximab, which blocks ligand binding to epidermal growth factor receptor (EGFR), is currently being studied as a novel treatment for non-small cell lung cancer (NSCLC). However, its mechanisms of action toward metastasis, and markers of drug sensitivity, have not been fully elucidated. This study was conducted to (a) determine the effect of Cetuximab on invasion and NSCLC-metastasis; (b) investigate urokinase-type plasminogen activator receptor (u-PAR), a major molecule promoting invasion and metastasis, as a target molecule; (c) delineate molecular mediators of Cetuximab-induced metastasis inhibition; and (d) identify biomarkers of drug sensitivity in NSCLC.

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Purpose: The combination of ifosfamide, carboplatin, and etoposide (ICE) is highly effective in treating small cell lung cancer (SCLC). Myelosuppression resulting in leukopenia and thrombocytopenia is the dose-limiting toxicity.

Patients And Methods: This phase 3 study assessed 2-year survival improvement with dose intensification of ICE chemotherapy (ICT) in patients with good-prognosis SCLC.

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Hypermethylation occurs frequently in neoplastic cells and affects tumorigenesis. Malignant mesothelioma is an aggressive cancer developing in the thoracic cavity and patients have a rather bad prognosis. Our goal was to determine epigenetic alterations of a series of genes and to analyse the potential correlation of such changes with overall survival.

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Background: Gefitinib is an orally active epidermal growth factor receptor tyrosine kinase inhibitor with activity in previously treated patients with advanced-stage non-small-cell lung cancer (NSCLC). However, little is known of its activity as monotherapy in chemotherapy-naive patients. This phase II study (1839IL/0456) evaluated first-line gefitinib in patients with advanced-stage NSCLC.

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Unlabelled: This is a dose-finding study of fixed dose gemcitabine and escalating doses of ifosfamide, in chemo naïve patients with advanced non-small cell lung cancer. The purpose of the study was to determine the optimal dosage and the maximal tolerated dose (MTD) of a specified schedule of gemcitabine and ifosfamide. Patients received gemcitabine 1250 mg/m2 and ifosfamide between 1.

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Despite improvements in conventional treatment, patients with advanced non-small-cell lung cancer (NSCLC) have a poor prognosis, leaving a significant unmet need for novel treatments. One such novel, biologically targeted agent is the orally active epidermal growth factor receptor tyrosine kinase inhibitor gefitinib. This open-label pilot trial investigated the safety, pharmacokinetics, and efficacy of 2 doses of gefitinib (250 and 500 mg per day) combined with docetaxel (75 mg/m2) in patients with locally advanced or metastatic NSCLC as first- and second-line chemotherapy.

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In the treatment of extensive disease of small cell lung cancer (ED SCLC) there is an urgent need for more effective and better-tolerated drug regimens. We report on a prospective phase II trial performed to evaluate the efficacy and safety of a platinum-free regimen--containing topotecan and etoposide--in the first-line treatment of ED SCLC. Between December 1999 and July 2001, 28 chemotherapy-naive patients with ED SCLC were recruited; 9 patients had stage IIIB disease and 19 patients had stage IV disease.

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The present study explored adolescents' ethical self-images and related behavioral decisions. Data were collected from two groups of adolescent girls (N = 49) using an open-ended survey. One group attended a public high school for gifted students and the other group attended an alternative public high school.

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Purpose: The purpose of this study was to assess the activity and toxicity of a combined regimen of topotecan and cisplatin in "sensitive" (s) and "refractory" (r) small-cell lung cancer (SCLC) patients treated previously.

Experimental Design: Patients with measurable SCLC and progressive disease after one first-line regimen were eligible for the study. Patients were enrolled in two separate groups: r group (patients who failed first-line treatment <3 months from treatment discontinuation) and s group (patients who responded to first-line treatment and progressed >or=3 months after treatment discontinuation).

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Purpose: To assess the impact on survival of increasing dose-intensity (DI) of cyclophosphamide, doxorubicin, and etoposide (CDE) in small-cell lung cancer (SCLC).

Patients And Methods: Previously untreated SCLC patients were randomized to standard CDE (cyclophosphamide 1,000 mg/m(2) and doxorubicin 45 mg/m(2) on day 1, and etoposide 100 mg/m(2) on days 1 to 3 every 3 weeks, for five cycles) or intensified CDE (cyclophosphamide 1,250 mg/m(2) and doxorubicin 55 mg/m(2) on day 1, and etoposide 125 mg/m(2) on days 1 to 3 with granulocyte colony-stimulating factor [G-CSF] 5 micro g/kg/d on days 4 to 13 every 2 weeks, for four cycles). Projected cumulative dose was almost identical on the two arms, whereas projected DI was nearly 90% higher on the intensified arm.

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Background: The aim of this Phase I, dose-escalation study was to determine the maximum tolerated dose (MTD), recommended dose (RD), and dose-limiting toxicity (DLT) of a raltitrexed ('Tomudex') and cisplatin combination in patients with previously untreated, metastatic non-small cell lung cancer (NSCLC).

Patients And Methods: Patients received raltitrexed (15-min intravenous infusion), followed by cisplatin (1-h intravenous infusion), every 3 weeks at escalating dose levels.

Results: In total, 21 patients entered the study.

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Article Synopsis
  • Prophylactic antibiotics significantly reduce the incidence of febrile leucopenia (FL) during CDE chemotherapy for small-cell lung cancer (SCLC), showing a decrease from 25% in the placebo group to 11% in the antibiotics group.
  • Patients receiving antibiotics also experienced fewer infections overall and required less therapeutic antibiotics, resulting in fewer hospitalizations due to FL (31 vs. 17).
  • The use of ciprofloxacin and roxithromycin led to no infectious deaths in the antibiotics group, whereas there were five deaths (6%) in the placebo group, indicating a substantial benefit in patient outcomes.
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