1,330 results match your criteria: "Institute for Medical Biometry[Affiliation]"

Homozygous variant in translocase of outer mitochondrial membrane 7 leads to metabolic reprogramming and microcephalic osteodysplastic dwarfism with moyamoya disease.

EBioMedicine

December 2024

Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Research Center of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan. Electronic address:

Background: Impaired mitochondrial protein import machinery leads to phenotypically heterogeneous diseases. Here, we report a recurrent homozygous missense variant in the gene that encodes the translocase of outer mitochondrial membrane 7 (TOMM7) in nine patients with microcephaly, short stature, facial dysmorphia, atrophic macular scarring, and moyamoya disease from seven unrelated families.

Methods: To prove the causality of the TOMM7 variant, mitochondrial morphology, proteomics, and respiration were investigated in CRISPR/Cas9-edited iPSCs-derived endothelial cells.

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Digitization of Dentate and Edentulous Maxillectomy and Mandibulectomy Defects with Three Different Intraoral Scanners: A Comparative In Vitro Study.

J Clin Med

November 2024

Department of Advanced Prosthodontics, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.

: The objective of this study was to compare the trueness and precision of three intraoral scanners (IOSs) for the digitization of dentate and edentulous maxillectomy and mandibulectomy defects in artificial models. Four representative defect models-a dentate and an edentulous maxillectomy model and a dentate and an edentulous mandibulectomy model-were used for digital scanning. After a reference scan of each model, they were scanned with three IOSs: CEREC AC Omnicam, True Definition, and cara TRIOS 3.

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Purpose: eHealth-facilitated integrated care models (eICMs) have proved effective in improving outcomes for chronically ill patients. However, evidence on cost-effectiveness of eICMs is scarce so far. Allogeneic stem cell transplantation (alloSCT) recipients' post-discharge treatment costs and mortality are greatly influenced by complications.

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The hypothalamus plays a crucial role in the regulation of a broad range of physiological, behavioral, and cognitive functions. However, despite its importance, only a few small-scale neuroimaging studies have investigated its substructures, likely due to the lack of fully automated segmentation tools to address scalability and reproducibility issues of manual segmentation. While the only previous attempt to automatically sub-segment the hypothalamus with a neural network showed promise for 1.

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Lysosomes play a crucial role in metabolic adaptation to starvation, but detailed in vivo studies are scarce. Therefore, we investigated the changes of the proteome of liver lysosomes in mice starved short-term for 6h or long-term for 24h. We verified starvation-induced catabolism by weight loss, ketone body production, drop in blood glucose and an increase of 3-methylhistidine.

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Article Synopsis
  • Many cancer patients, especially postmenopausal women with breast cancer, continue to smoke even after their diagnosis, which can negatively affect treatment outcomes.!
  • A study analyzed data from 450 breast cancer survivors to identify factors influencing persistent smoking, finding that longer smoking duration and higher daily cigarette consumption increased the likelihood of continued smoking, while older age and greater leisure physical activity were linked to quitting.!
  • The research highlights the need for smoking cessation programs tailored for cancer patients, suggesting that incorporating physical activity in tobacco treatment plans may help breast cancer patients quit smoking more effectively.!
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Impact of Pseudomonas aeruginosa carriage on intensive care unit-acquired pneumonia: a European multicentre prospective cohort study.

Clin Microbiol Infect

November 2024

Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands; Department of Medical Microbiology, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands.

Objectives: Pseudomonas aeruginosa (PA) is a common causative pathogen of pneumonia acquired in the intensive care unit (ICU). The aim of this study was to determine the incidence of PA ICU pneumonia (PAIP) and to quantify its independent association with PA colonization at different body sites.

Methods: Adult patients on mechanical ventilation at ICU admission were prospectively enrolled across 30 European ICUs.

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Background: The use of online information and communication is globally increasing in the healthcare sector. In addition to known benefits in other medical fields, possible specific potentials of eHealth lie in the monitoring of oncological patients undergoing outpatient therapy. Specifically, the treatment with immune checkpoint inhibitors (ICI) requires intensive monitoring due to various possible negative side effects.

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Germline copy number variants and endometrial cancer risk.

Hum Genet

December 2024

Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.

Article Synopsis
  • Known genetic risk factors account for about one-third of familial endometrial cancer cases, but the link between rare germline copy number variants (CNVs) and cancer risk is not well understood.
  • A study analyzed DNA from over 4,000 endometrial cancer patients and nearly 18,000 controls, finding that the cancer group had a significantly higher number of CNVs.
  • The research identified 141 gene loci potentially related to endometrial cancer risk, highlighting a specific area (16p11.2) with recurrent deletions that could help further investigations into genetic susceptibility.
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Introduction: Our monocentric and retrospective study aimed to investigate the clinical effectivity of HEPA filters in combination with the antifungal drug prophylaxis in patients with AML undergoing intensive chemotherapy and allogeneic stem cell transplantation (SCT).

Methods/results: We included 177 patients between 2005 and 2015 representing a total of 372 in-hospital stays, 179 in the HEPA cohort (+HEPA) and 193 in the cohort without HEPA filters (-HEPA). No significant additional benefit of HEPA filtration on the risk reduction of IFI was observed.

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Background: Perivascular space (PVS) enlargement in ageing and Alzheimer's disease (AD) and the drivers of such a structural change in humans require longitudinal investigation. Elucidating the effects of demographic factors, hypertension, cerebrovascular dysfunction, and AD pathology on PVS dynamics could inform the role of PVS in brain health function as well as the complex pathophysiology of AD.

Methods: We studied PVS in centrum semiovale (CSO) and basal ganglia (BG) computationally over three to four annual visits in 503 participants (255 females; mean = 70.

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Article Synopsis
  • Duplications of a specific region on the X chromosome known as Xq28,distal have been linked to schizophrenia (SCZ) and intellectual disability in both males and females, though the exact genes involved remain unclear.
  • This study aimed to explore rare genetic variants in the Xq28,distal locus and how they might contribute to SCZ risk, using advanced sequencing methods on a large sample of patients and controls.
  • Despite identifying some potentially functional variants, the analysis did not find a significant difference between patients with SCZ and controls, suggesting that more research is needed to understand the role of X-chromosomal factors in neuropsychiatric disorders.
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Association analysis between an epigenetic alcohol risk score and blood pressure.

Clin Epigenetics

October 2024

Framingham Heart Study, 73 Mt. Wayte Avenue, Framingham, MA, 01702, USA.

Article Synopsis
  • This study investigates the link between an epigenetic risk score (ERS) related to alcohol consumption and blood pressure traits, finding significant associations between higher ERS and increased blood pressure levels among participants.
  • In the analysis of 3,898 individuals from the Framingham Heart Study, each unit increase in the ERS correlated with a rise in systolic blood pressure (SBP) by almost 2 mm Hg and diastolic blood pressure (DBP) by about 0.68 mm Hg.
  • The research suggests that the ERS could serve as a useful tool for assessing cardiovascular risks linked to alcohol consumption, especially in cases where self-reported data may be unreliable.
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Objectives: Raynaud's phenomenon (RP) is a vascular disorder characterized by episodic peripheral artery vasospasms, resulting in paleness, cyanosis, and/or erythema. There are few reports, mostly case reports, on the benefits of spinal cord stimulation (SCS) for the treatment of RP. However, there is a lack of objective evidence on SCS-induced modulation of the sympathetic system (eg, vasodilation) in this condition.

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Polygenic risk scores stratify breast cancer risk among women with benign breast disease.

J Natl Cancer Inst

October 2024

Department of Quantitative Health Sciences, Mayo Clinic, Jacksonville, FL, USA, and Rochester, MN, USA.

Purpose: Most breast biopsies are diagnosed as benign breast disease (BBD), with 1.5- to fourfold increased breast cancer (BC) risk. Apart from pathologic diagnoses of atypical hyperplasia, few factors aid in BC risk assessment of these patients.

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Aim: We focused on the FOXN3 gene and selected its antisense transcripts (FOXN3-AS1) to investigate its potential involvement in acute myeloid leukemia (AML).

Background: Several integrated multi-omics datasets have expanded the horizons of the cancer landscape. With the emergence of new high-throughput technologies, a large number of non-coding RNAs have been confirmed to be involved in the pathogenesis of different types of hematological malignancies.

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Graphasing: phasing diploid genome assembly graphs with single-cell strand sequencing.

Genome Biol

October 2024

Institute for Medical Biometry and Bioinformatics, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.

Haplotype information is crucial for biomedical and population genetics research. However, current strategies to produce de novo haplotype-resolved assemblies often require either difficult-to-acquire parental data or an intermediate haplotype-collapsed assembly. Here, we present Graphasing, a workflow which synthesizes the global phase signal of Strand-seq with assembly graph topology to produce chromosome-scale de novo haplotypes for diploid genomes.

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Complex genetic variation in nearly complete human genomes.

bioRxiv

September 2024

Institute for Medical Biometry and Bioinformatics, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany.

Article Synopsis
  • * It achieves a high level of completeness, closing 92% of previous assembly gaps and fully assembling complex regions, including 1,852 complex structural variants and 1,246 human centromeres.
  • * The findings lead to significant improvements in genotyping accuracy and enable the detection of over 26,000 structural variants per sample, enhancing the potential for future disease association research.
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Evaluating the accuracy and reliability of non-piezo portable ultrasound devices in postpartum care.

Arch Gynecol Obstet

October 2024

Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg Campus 1, 53127, Bonn, Germany.

Introduction: The early diagnosis of hemorrhage via postpartum ultrasound is crucial to initiate therapy and, thus, prevent maternal death. In these critical situations rapid availability and simple transport of ultrasound devices is vital, paving the way for a  new generation of portable handheld ultrasound devices (PUD) consisting of transducers and tablets or smart phones. However, evidence to confirm the diagnostic accuracy of these new devices is still scarce.

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Article Synopsis
  • Filarial lymphedema (LE) remains a global health issue even with efforts to eliminate lymphatic filariasis (LF), particularly in Ghana where preventive measures mainly focus on chemotherapy which isn’t helpful for those already affected.
  • A clinical trial from 2018-2020 tested the effectiveness of strict hygiene combined with doxycycline (DOX) on 356 participants with different stages of LE in Ghana and was double-blind and placebo-controlled.
  • Results indicated that while there was some improvement in LE across all groups, doxycycline did not significantly affect the progression of the disease, but adherence to hygiene practices showed strong benefits and potential for reducing acute attacks.
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The histopathological examination of radical prostatectomy specimens is essential for assessing critical tumor characteristics, including stage, grade, and margins, all of which impact patient prognosis. However, the extent of embedding the prostate has long been a subject of debate, with some advocating partial/selective embedding and others favoring complete embedding. This study establishes a standardized and time-efficient protocol for processing radical prostatectomy specimens with limited embedding while maintaining diagnostic accuracy.

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Background: High consumption of ultraprocessed foods (UPFs) continues to draw significant public health interest because of the associated negative health outcomes. Metabolomics can contribute to the understanding of the biological mechanisms through which UPFs may influence health.

Objectives: To investigate urine and plasma metabolomic biomarkers of UPF intake in adolescents and young adults.

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Introduction: After cardiac arrest and successful resuscitation patients often present with hypoxic-ischemic brain injury, which is a major cause of death due to poor neurological outcome. The development of a robust histopathological scoring system for the reliable and easy identification and quantification of hypoxic-ischemic brain injury could lead to a standardization in the evaluation of brain damage. We wanted to establish an easy-to-use neuropathological scoring system to identify and quantify hypoxic-ischemic brain injury.

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Antibiotic Prophylaxis During Allogeneic Stem Cell transplantation-A Comprehensive Single Center Retrospective Analysis.

Transplant Cell Ther

December 2024

Department of Oncology, Hematology, Immuno-Oncology and Rheumatology, University Hospital Bonn, Bonn, Germany; Center for Integrated Oncology (CIO) ABCD, Aachen Bonn Cologne Düsseldorf, Germany. Electronic address:

Article Synopsis
  • A study was conducted to analyze the effects of omitting standard antibiotic prophylaxis during allogeneic hematopoietic stem cell transplantation (allo-HSCT), focusing on survival rates and the development of Graft-versus-Host disease (GvHD).
  • The research compared patient outcomes before and after the suspension of antibiotic prophylaxis, assessing factors such as severe infections, transplant-related mortality, and infections by multiresistant pathogens among 221 patients.
  • The results showed a trend towards better outcomes in the group without antibiotic prophylaxis; however, there were no significant differences found in overall survival or acute GvHD between the two groups.
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