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Optimal Dose and Timing of Umbilical Stem Cells Treatment in Pulmonary Arterial Hypertensive Rats
Yonsei Medical Journal ; : 570-580, 2017.
Article in English | WPRIM | ID: wpr-188812
ABSTRACT

PURPOSE:

Pulmonary arterial hypertension (PAH) is a fatal disease which is characterized by an increase in pulmonary arterial pressure leading to increases in right ventricular afterload. Human umbilical cord blood derived-mesenchymal stem cells (hUCB-MSCs) administered via the jugular vein have been previously shown to improve PAH by reversal treatment. However, the effect of low dosage and transfusion timing of hUCB-MSCs on PAH has not yet been clearly established. Obviously, low dosage treatment can lead to a reduction in costs. This is the first study on early transfusion effect. MATERIALS AND

METHODS:

This study was divided into two parts. The first part is an investigation of dose-dependent effect. hUCB-MSCs were administered into 3 groups of rats (UA 3×10⁶ cells, UB 1.5×10⁶ cells, UC 3×10⁵ cells) via the external jugular vein at week 1 after monocrotaline (MCT) injection. The second part is a search for optimal treatment timing in 3×10⁵ cells dose of hUCB-MSCs administered at day 1 for UD group (low dose of hUCB-MSCs at day 1), at day 1 and week 1 for the UE group (dual transfusion of low dose of hUCB-MSCs at day 1 and week 1) and at 1 week for the UF group (reversal treatment of low dose hUCB-MSC at week 1) after MCT injection.

RESULTS:

The administration of 3×10⁵ hUCB-MSCs was as effective as the 3×10⁶ dose in decreasing mean right ventricle (RV) pressure and pulmonary pathological changes. Early treatment with hUCB-MSCs improved mean RV pressure, pulmonary pathological changes and heart collagen 3 protein expression levels in PAH.

CONCLUSION:

Low-dose early treatment of hUCB-MSCs is as effective as a high dose treatment of hUCB-MSCs in improving PAH although dual or reversal treatment is still more effective.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Stem Cells / Collagen / Monocrotaline / Fetal Blood / Mesenchymal Stem Cells / Arterial Pressure / Heart / Heart Ventricles / Hypertension / Hypertension, Pulmonary Limits: Animals / Humans Language: English Journal: Yonsei Medical Journal Year: 2017 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Stem Cells / Collagen / Monocrotaline / Fetal Blood / Mesenchymal Stem Cells / Arterial Pressure / Heart / Heart Ventricles / Hypertension / Hypertension, Pulmonary Limits: Animals / Humans Language: English Journal: Yonsei Medical Journal Year: 2017 Type: Article