# Human placental mesenchymal stromal cell‐derived small extracellular vesicles as a treatment for severe COVID‐19: A double‐blind randomized controlled clinical trial

*PRI Rank #20 · Topics and Trends in Most Cited Mesenchymal stem cell research Papers, Class of 2026*

*Canonical URL: https://pri.pepkio.com/top-papers/mesenchymal-stem-cell-research/2026/rank-20*

| Field | Value |
| --- | --- |
| Rank | #20 |
| 18m citations | 31 |
| Journal | Journal of Extracellular Vesicles |
| Year | 2024 |
| DOI | 10.1002/jev2.12492 |
| Corresponding authors | Reza Yarani, Kamran Mansouri |
| Institution | Kermanshah University of Medical Sciences, Iran |

**Ranking page:** [Topics and Trends in Most Cited Mesenchymal stem cell research Papers, Class of 2026](https://pri.pepkio.com/top-papers/mesenchymal-stem-cell-research/2026)

**Paper link:** [10.1002/jev2.12492](https://doi.org/10.1002/jev2.12492)

## Topics

Placenta-derived mesenchymal stem cells · Exosomes/Extracellular vesicles · hPMSC-sEVs · COVID-19 · Acute respiratory distress syndrome · double-blind randomized controlled trial · mortality ratio · critically ill patients · SpO2 levels · hospital deaths · mean time to death

## Cite this ranking

```
Pepkio Research Index (PRI). Topics and Trends in Most Cited Mesenchymal stem cell research Papers, Class of 2026. https://pri.pepkio.com/top-papers/mesenchymal-stem-cell-research/2026. Accessed 2026-07-31.

Zheng Su, Tinsley Li, Thematic Shifts in Early-High-Impact Cancer Genomics and Diagnostics Research: A Bibliometric and Semantic Analysis. bioRxiv 2026.07.04.736459; doi: https://doi.org/10.64898/2026.07.04.736459
```