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Pulmonary Hypertension Research

Author: Shelley Ensz. Scleroderma is highly variable. See Types of Scleroderma. Read Disclaimer
Overview
Antibodies
Causes of PH
Ineffective Therapies
Prevalence

Overview

Active research for pulmonary hypertension is largely focusing on causes, antibodies, and treatments. (Also see Pulmonary Hypertension Overview, Scleroderma Lung Involvement, What is Scleroderma?, Types of Scleroderma, and Systemic Sclerosis)

Recent advances in scleroderma-associated (SSc) - pulmonary hypertension. Although there have been many recent advances in SSc-pulmonary hypertension, further research is needed in order to prevent/cure this deadly complication. PubMed, Curr Opin Rheumatol, 2014 Nov;26(6):637-45.

Combined Pulmonary Fibrosis and Emphysema (CPFE) Among Patients With Scleroderma (SSc)-Associated Pulmonary Hypertension (PH). There appears to be no difference in the severity of PH or in pulmonary function between SSc-PH patients with and without CPFE. Chest, 2013;144. (Also see Pulmonary Fibrosis)

New study will explore impact of exercise on pulmonary hypertension (PAH). The objective of this study will be finding identifiers that separate PAH patients who will benefit from exercise from those whose condition will worsen from it. University of Wisconsin-Madison News. 08/26/2011.

Antibodies

Interferon and alternative activation of macrophage/monocytes in systemic sclerosis-associated pulmonary arterial hypertension. This study explores the relationship between biomarkers of pulmonary arterial hypertension (PAH), interferon-regulated gene expression and alternatively activated macrophages (AAM) in systemic sclerosis (SSc). Romy B. Christmann MD, PhD, Arthritis and Rheumatism, 18 MAR 2011.

Causes

What Causes Pulmonary Hypertension? Certain factors appear to increase your chances of developing pulmonary arterial hypertension (PAH). National Heart, Blood and Lung Institute.

T-Helper 17 Cell Polarization in Pulmonary Arterial Hypertension. T helper 17 cell immune polarization in patients with PAH has been highlighted, as has been previously demonstrated in other chronic inflammatory and autoimmune conditions. Chest, 2015;147(6):1610-1620.

Significance of serum uric acid (UA) in pulmonary hypertension (PH) due to systemic sclerosis: a pilot study. Among patients with PH, UA values were inversely correlated with the SMWT (6-minute walk test) distance. Serum UA values increased in proportion to the functional capacity in PH patients with scleroderma.T Dimitroulas. (PubMed) Rheumatol Int, 2010 Jul 25.

Ineffective Therapies

Calcium channel blockers do not protect scleroderma patients from developing pulmonary hypertension

Immunosuppressives do not prevent pulmonary hypertension in scleroderma patients.

Prevalence of PH/PAH in Scleroderma (Systemic Sclerosis, SSc)

Prevalence of pulmonary arterial hypertension (PAH) in patients with connective tissue diseases: a systematic review of the literature. Prevalence of PAH in patients with connective tissue diseases was substantially higher than that of idiopathic PAH based on pooled prevalence estimates. PubMed, Clin Rheumatol, 2013 Jun 20. (Also see Connective Tissue Disease)

"PAH in SSc occurs in a significant proportion of (systemic scleroderma) patients without any "red flag signs" in early stages." Journal of Association of Physicians of India.

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