1,598 results match your criteria: "Pathology Center[Affiliation]"

Coronary microvascular dysfunction (CMD) refers to structural and functional abnormalities of the microcirculation that impair myocardial perfusion. CMD plays a pivotal role in numerous cardiovascular diseases, including myocardial ischemia with non-obstructive coronary arteries, heart failure, and acute coronary syndromes. This review summarizes recent advances in CMD pathophysiology, assessment, and treatment strategies, as well as ongoing challenges and future research directions.

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Background: Sunitinib, a multi-targeted tyrosine kinase inhibitor, is used as a second-line therapy for gastrointestinal stromal tumors (GIST) resistant to imatinib. However, its impact on the vascular endothelial growth factor (VEGF) pathway can lead to significant toxicities, including hypertension and thrombotic microangiopathy (TMA).

Case Presentation: This case report describes a unique instance of a patient with metastatic GIST who developed endocapillary proliferative glomerulonephritis (EPGN) with IgA2 deposits and TMA following sunitinib treatment.

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Article Synopsis
  • The study explored the connection between TP53 mutations and breast cancer outcomes, finding that these mutations can lead to resistance against chemotherapy and worse prognosis.
  • It analyzed 112 breast cancer cases, using p53 immunohistochemistry (IHC) as a marker for TP53 mutations, reporting an 88.4% concordance rate in detecting mutations.
  • The research concluded that abnormal p53 IHC patterns are linked to poorer cancer survival rates and therefore can serve as a useful and accessible biomarker for predicting treatment resistance in breast cancer patients.
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Hyperglycemia leads to increased oxidative stress in mitochondria, an abnormal activation of intracellular inflammatory signals, and mediate multiple dysfunctions. Raspberry ketone (RK) is an aromatic phenolic compound found in many plants and could contribute to weight loss, restore impaired glucose tolerance, and has antioxidant properties. In our investigation, RK could greatly prevent islet, brain and other tissue damage caused by hyperglycemia in a zebrafish model with streptozotocin (STZ)-induced hyperglycemia.

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Colorectal cancer (CRC) is the second leading cause of cancer-related death in Europe. This study aimed to investigate CRC mortality trends in Montenegro from 1990 to 2018 and critically review the impact of preventive activities on cancer suppression in this country. We used the national CRC mortality data categorized by sex and age.

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Tumor Cellularity (TC) is an important metric for assessing organ tumor burden. However, manual cell counting is not feasible due to large volumes of pathology images and inconsistent measurements between pathologists. The PAIP 2023 Challenge aimed to solve this problem using AI.

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Subtyping of gastric cancer based on basement membrane genes that stratifies the prognosis, immune infiltration and therapeutic response.

Discov Oncol

August 2024

Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushanhu Road, Hefei, 230031, Anhui, China.

Gastric cancer (GC) is highly heterogeneous and prone to metastasis, which are obstacles to the effectiveness of treatment. The basement membrane (BM) acts as a barrier to tumor cell invasion and metastasis. It is critical to investigate the relationship between BM status, metastasis, and patient prognosis.

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A dog presented with a 1-month history of left-sided hemiparesis. MRI showed a focal, 4-cm-long, symmetrical, ovoid, poorly demarcated intramedullary expansion at C6-C7 that was T2-weighted hyperintense, T1-weighted isointense, and noncontrast enhancing. After clinical progression and euthanasia, pathology revealed a neoplasm composed of astrocytes and dysmorphic neurons, consistent with a ganglioglioma.

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Article Synopsis
  • Esophageal cancer is prevalent in China, often diagnosed at an advanced stage, leading to a low 5-year survival rate; combined chemotherapy is commonly used for treatment.
  • The study focuses on developing DSPE-PEG2000 nanoliposomes encapsulating the anticancer drugs docetaxel and oridonin, examining their drug release and effectiveness through various characterization methods.
  • Results indicate that a 2:1 ratio of the drugs enhances their synergistic effect, with the nanoliposomes successfully targeting tumors, promoting drug release in acidic conditions, and inducing cell apoptosis, showing promise as an effective treatment.
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Background: Gastric foveolar type neoplasia is a rare histological variant of gastric tumors. It is very difficult to differentiate between benign and malignant intraepithelial foveolar neoplasia (IFN). Although limited molecular alterations have been identified in IFNs, somatic copy number alterations (SCNAs), which are linked to tumor progression, have not been systematically evaluated in IFN.

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Background: Lovastatin, a type of statin usually considered as a lipid-lowering drug that lowers blood cholesterol and low-density lipoprotein cholesterol levels, has been rediscovered to have anticancer activity. Fewer studies exist regarding the effect of lovastatin on esophageal squamous cell carcinoma (ESCC).

Methods: Here, we report that lovastatin shows anticancer effect on ESCC By affecting the mitochondrial autophagy pathway.

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Diagnosis and treatment of refractory infectious diseases using nanopore sequencing technology: Three case reports.

World J Clin Cases

August 2024

Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei 230031, Anhui Province, China.

Background: Infectious diseases are still one of the greatest threats to human health, and the etiology of 20% of cases of clinical fever is unknown; therefore, rapid identification of pathogens is highly important. Traditional culture methods are only able to detect a limited number of pathogens and are time-consuming; serologic detection has window periods, false-positive and false-negative problems; and nucleic acid molecular detection methods can detect several known pathogens only once. Three-generation nanopore sequencing technology provides new options for identifying pathogens.

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  • Cancer stem cells (CSCs) play a crucial role in the growth and development of laryngeal squamous cell carcinoma (LSCC), but identifying them and understanding their functions is challenging.
  • This study used single-cell RNA sequencing to analyze tumor tissues, paracancerous tissues, and local lymph nodes from LSCC patients, revealing two types of stem cells: CSCs and normal stem cells (NSCs).
  • The findings highlighted specific CSC markers linked to poor prognosis in LSCC patients and suggested that certain drugs could effectively target these CSC-related markers.
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Cancer is widely regarded as a leading cause of death in humans, with colon adenocarcinoma (COAD) ranking among the most prevalent types. Cuproptosis is a novel form of cell death mediated by protein lipoylation. Cuproptosis-related genes (CRGs) participate in tumourigenesis and development.

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Introduction: Small Cell Lung Cancer (SCLC) can be classified into transcriptional subtypes with distinct degrees of neuroendocrine (NE) differentiation. Recent evidence supports plasticity among subtypes with a bias toward adoption of low-NE states during disease progression or upon acquired chemotherapy resistance. Here, we identify a role for SMARCA4, the catalytic subunit of the SWI/SNF complex, as a regulator of subtype shift in SCLC.

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  • Advances in endoscopic submucosal dissection (ESD) have led to more early gastric cancer (EGC) diagnoses, particularly in the gastric angulus area of the stomach among the Chinese population.
  • A study of 740 EGC patients revealed that the gastric angulus is the second most common site for EGCs, with this location showing a high incidence of severe submucosal fibrosis and ulceration.
  • There is a significant correlation between submucosal fibrosis at the gastric angulus and worse ESD outcomes, such as increased complications like perforation and longer procedure times, highlighting the need for careful dissection in these cases.
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  • The study aimed to outline how mismatch repair (MMR) and microsatellite instability (MSI) testing is conducted in various laboratories, specifically before the 2022 CAP/AMP guidelines were published.
  • Researchers analyzed data from supplementary questionnaires sent to 542 laboratories regarding their testing practices and types of specimens used.
  • Results showed that domestic labs test for MSI/MMR more frequently than international ones, with academic hospitals leading in testing rates; most labs are aware of the clinical implications of high MSI or MMR-deficient results for immune checkpoint therapy.
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Large-scale retrospective studies allow for identification of disease trends, such as predisposing factors, typical clinical signs, and range of histologic lesions, which cannot be determined in individual case reports. Lesions of the endocrine pancreas of ferrets are extensively reported; however, there are no in-depth investigations of lesions in the exocrine pancreas. This retrospective analysis presents the histologic features, clinical signs, and concurrent diseases of lesions in the exocrine pancreas of ferrets.

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Exercise mitigates reductive stress-induced cardiac remodeling in mice.

Redox Biol

September 2024

Cardiac Aging & Redox Signaling Laboratory, Molecular and Cellular Pathology, Department of Pathology/Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Medicine, University of Utah, School of Medicine, Salt Lake City, UT, USA; Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address:

The endoplasmic reticulum (ER) regulates protein folding and maintains proteostasis in cells. We observed that the ER transcriptome is impaired during chronic reductive stress (RS) in cardiomyocytes. Here, we hypothesized that a prolonged moderate treadmill exercise mitigates the RS-induced ER dysfunction and cardiac remodeling in cardiac-specific constitutively active Nrf2 mice (CaNrf2-TG).

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PURPOSEThe impact of the intratumoral microbiome on immune checkpoint inhibitor (ICI) efficacy in patients with non-small-cell lung cancer (NSCLC) is unknown. Preclinically, intratumoral Escherichia is associated with a proinflammatory tumor microenvironment and decreased metastases. We sought to determine whether intratumoral Escherichia is associated with outcome to ICI in patients with NSCLC.

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Nasopharyngeal carcinoma (NPC) has a unique and complex etiology that is not completely understood. NPC genome has been scrutinized by molecular studies, but small biopsy material and heavy infiltration of nonmalignant cells present major technical challenges. Over the past decade, significant progress in sinonasal tumor taxonomy has taken place with the discovery of tumor-specific fusion oncogenes generated by chromosomal translocation information.

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Tumour vasculature at single-cell resolution.

Nature

August 2024

Clinical Research Center (CRC), Medical Pathology Center (MPC), Cancer Early Detection and Treatment Center (CEDTC) and Translational Medicine Research Center (TMRC), Chongqing University Three Gorges Hospital, Chongqing University, Chongqing, China.

Tumours can obtain nutrients and oxygen required to progress and metastasize through the blood supply. Inducing angiogenesis involves the sprouting of established vessel beds and their maturation into an organized network. Here we generate a comprehensive atlas of tumour vasculature at single-cell resolution, encompassing approximately 200,000 cells from 372 donors representing 31 cancer types.

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A precise microdissection strategy enabled spatial heterogeneity analysis on the targeted region of formalin-fixed paraffin-embedded tissues.

Talanta

October 2024

School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, China; Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, 210002, China. Electronic address:

Article Synopsis
  • The study presents a new tool called hydrogel pathological sectioning coupled with the Sampling Junior instrument (HPSJ) to analyze multiple spatial targets in formalin-fixed paraffin-embedded (FFPE) tissue sections, focusing on precision and efficiency.* -
  • HPSJ was used to assess the spatial heterogeneity of nine ferroptosis-related genes and two miRNAs in triple-negative breast cancer samples, confirming significant variations in gene expression.* -
  • Additionally, HPSJ was able to detect the spatial heterogeneity of a specific genetic mutation in lung adenocarcinoma samples, showcasing its potential as a high-throughput platform for studying tumor biology and aiding in personalized medicine.*
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[Current status and progress on diagnosis of allergic diseases].

Zhonghua Yu Fang Yi Xue Za Zhi

June 2024

Department of Laboratory Medicine, Peking University Third Hospital, Beijing 100191, China.

Allergic diseases are immune disorders caused by allergens, leading to inflammation or organ dysfunction. In the past decade, the prevalence of allergic diseases in China has increased dramatically, imposing a heavy economic burden on the health care system and society. diagnosis of allergic diseases plays a crucial role in the diagnosis, treatment, and prevention of such diseases.

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