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Related Concept Videos

Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

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Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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Peripheral Artery Disease IV: Nursing Management01:26

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 The nursing management of a patient with peripheral artery disease (PAD) begins with a thorough assessment of the patient’s health history and clinical manifestations.AssessmentHealth History: Evaluate the patient’s history of hypertension, hyperlipidemia, family history of cardiovascular issues, and lifestyle factors such as dietary patterns, smoking, and physical activity.Physical Examination:Assess the affected extremity for decreased or absent peripheral pulses,...
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Peripheral Artery Disease III: Interprofessional Care01:27

Peripheral Artery Disease III: Interprofessional Care

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Peripheral Artery Disease (PAD) is characterized by narrowed arteries that diminish blood flow to the extremities. Effective management of PAD requires an interprofessional approach involving various healthcare professionals. The critical aspects of interprofessional care for PAD patients focus on risk factor modification, drug therapy, exercise therapy, nutrition therapy, critical limb ischemia care, and interventional radiology and surgical procedures.The primary treatment goal for PAD...
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Peripheral Artery Disease V: Postoperative Nursing Management01:23

Peripheral Artery Disease V: Postoperative Nursing Management

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During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...
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Related Experiment Video

Updated: Feb 4, 2026

Generation of Induced-pluripotent Stem Cells Using Fibroblast-like Synoviocytes Isolated from Joints of Rheumatoid Arthritis Patients
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Single-Cell Analysis Reveals Peripheral Helper T Cells in Rheumatoid Arthritis-Related Interstitial Lung Disease.

Kensuke Suga1,2, Amara Seng1,2, Changfu Yao3,4

  • 1Kao Autoimmunity Institute, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California.

Arthritis & Rheumatology (Hoboken, N.J.)
|February 2, 2026
PubMed
Summary
This summary is machine-generated.

Researchers identified unique immune cell signatures in rheumatoid arthritis-related interstitial lung disease (RA-ILD), discovering peripheral helper T cells (Tph) exclusively in RA-ILD lungs. This finding offers new insights into RA-ILD pathogenesis.

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Area of Science:

  • Pulmonary Medicine
  • Immunology
  • Genomics

Background:

  • Rheumatoid arthritis-related interstitial lung disease (RA-ILD) pathogenesis remains poorly understood.
  • Clarifying cellular and transcriptomic differences in RA-ILD lungs is crucial for understanding disease mechanisms.

Purpose of the Study:

  • To elucidate the cellular and transcriptomic landscape of epithelial and immune cells in RA-ILD lungs.
  • To compare lung Tph cells in RA-ILD with synovial Tph cells.

Main Methods:

  • Single-cell RNA sequencing of lung explants from RA-ILD patients, controls, and CTD-ILD patients.
  • Integrative analysis of T cell subclusters with public synovial T cell data.
  • Immunofluorescence staining of lung sections for cell validation.

Main Results:

  • Identified 18 distinct cell clusters from 184,814 profiled cells.
  • Observed reduced alveolar type 2 cells and increased basal/ciliated cells in RA-ILD lungs.
  • Discovered exclusive presence of peripheral helper T cells (Tph) in RA-ILD lungs, with distinct activation and lower cytotoxic/exhausted signatures compared to synovial Tph cells.

Conclusions:

  • Detailed transcriptomic analysis reveals key cellular differences in RA-ILD lungs.
  • Peripheral helper T cells (Tph) are a hallmark of RA-ILD lungs.
  • Cross-tissue comparison highlights organ-specific Tph cell characteristics.