Evidence map›Paper›PMID 34526115›Full record

ArticleStem cell research & therapy2021

The effect of genetically modified platelet-derived growth factor-BB over-expressing mesenchymal stromal cells during core decompression for steroid-associated osteonecrosis of the femoral head in rabbits.

Roberto Alfonso Guzman, Masahiro Maruyama, Seyedsina Moeinzadeh, Elaine Lui, Ning Zhang, Hunter W Storaci, Kaysie Tam, Elijah Ejun Huang, Takeshi Utsunomiya, Claire Rhee and 4 more

Open access · goldAbstract read
In one paragraph

Article in Stem cell research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
12.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 60 citations in OpenAlex.

  1. [Advances in application of hydrogels for treatment of osteonecrosis of the femoral head].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 2 institutions in 1 country.

Roberto Alfonso GuzmanDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.ORCID 0000-0003-1623-6336
Masahiro MaruyamaDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Seyedsina MoeinzadehDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Elaine LuiDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Ning ZhangDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Hunter W StoraciDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Kaysie TamDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Elijah Ejun HuangDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Takeshi UtsunomiyaDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Claire RheeDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Qi GaoDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Zhenyu YaoDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA.
Yunzhi Peter YangDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA. ypyang@stanford.edu.
Stuart B GoodmanDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Edwards R155, Stanford, CA, 94305, USA. goodbone@stanford.edu.
Stanford University · USStanford Medicine · US

Funding

Microengineered Osteons for Bone Tissue EngineeringR01AR057837 · NIAMS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI YANG, YUNZHI · 2010 to 2018
$5.1M
Wear Particle Disease and NF-kappa B SignalingR01AR063717 · NIAMS · STANFORD UNIVERSITY · PI GOODMAN, STUART B · 2012 to 2021
$3.5M
Systems Modeling Guided Bone regenerationU01AR069395 · NIAMS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI YANG, YUNZHI, ZHOU, XIAOBO · 2016 to 2021
$3.4M
Tissue Engineering Approaches for Improved Treatment of Early Stage Osteonecrosis of the HipR01AR072613 · NIAMS · STANFORD UNIVERSITY · PI GOODMAN, STUART B, YANG, YUNZHI · 2018 to 2022
$2.2M
Vascularization in bone tissue engineering constructsR01AR074458 · NIAMS · STANFORD UNIVERSITY · PI YANG, YUNZHI · 2019 to 2023
$1.7M
Customized MSCs to Enhance Healing of Bone DefectsR01AR073145 · NIAMS · STANFORD UNIVERSITY · PI GOODMAN, STUART B · 2018 to 2021
$1.4M
NIAMS NIH HHS R01 AR057837NIAMS NIH HHS R01AR057837NIAMS NIH HHS R01 AR063717NIAMS NIH HHS R01AR063717NIAMS NIH HHS R01 AR072613NIAMS NIH HHS R01AR072613NIAMS NIH HHS R01 AR073145NIAMS NIH HHS R01AR073145NIAMS NIH HHS R01 AR074458NIAMS NIH HHS R01AR074458NIAMS NIH HHS U01 AR069395
6 · The paper itself

Abstract

backgroundApproximately one third of patients undergoing core decompression (CD) for early-stage osteonecrosis of the femoral head (ONFH) experience progression of the disease, and subsequently require total hip arthroplasty (THA). Thus, identifying adjunctive treatments to optimize bone regeneration during CD is an unmet clinical need. Platelet-derived growth factor (PDGF)-BB plays a central role in cell growth and differentiation. The aim of this study was to characterize mesenchymal stromal cells (MSCs) that were genetically modified to overexpress PDGF-BB (PDGF-BB-MSCs) in vitro and evaluate their therapeutic effect when injected into the bone tunnel at the time of CD in an in vivo rabbit model of steroid-associated ONFH.

methodsIn vitro studies: Rabbit MSCs were transduced with a lentivirus vector carrying the human PDGF-BB gene under the control of either the cytomegalovirus (CMV) or phosphoglycerate (PGK) promoter. The proliferative rate, PDGF-BB expression level, and osteogenic differentiation capacity of unmodified MSCs, CMV-PDGF-BB-MSCs, and PGK-PDGF-BB-MSCs were assessed. In vivo studies: Twenty-four male New Zealand white rabbits received an intramuscular (IM) injection of methylprednisolone 20 mg/kg. Four weeks later, the rabbits were divided into four groups: the CD group, the hydrogel [HG, (a collagen-alginate mixture)] group, the MSC group, and the PGK-PDGF-BB-MSC group. Eight weeks later, the rabbits were sacrificed, their femurs were harvested, and microCT, mechanical testing, and histological analyses were performed.

resultsIn vitro studies: PGK-PDGF-BB-MSCs proliferated more rapidly than unmodified MSCs (P < 0.001) and CMV-PDGF-BB-MSCs (P < 0.05) at days 3 and 7. CMV-PDGF-BB-MSCs demonstrated greater PDGF-BB expression than PGK-PDGF-BB-MSCs (P < 0.01). However, PGK-PDGF-BB-MSCs exhibited greater alkaline phosphatase staining at 14 days (P < 0.01), and osteogenic differentiation at 28 days (P = 0.07) than CMV-PDGF-BB-MSCs. In vivo: The PGK-PDGF-BB-MSC group had a trend towards greater bone mineral density (BMD) than the CD group (P = 0.074). The PGK-PDGF-BB-MSC group demonstrated significantly lower numbers of empty lacunae (P < 0.001), greater osteoclast density (P < 0.01), and greater angiogenesis (P < 0.01) than the other treatment groups.

conclusionThe use of PGK-PDGF-BB-MSCs as an adjunctive treatment with CD may reduce progression of osteonecrosis and enhance bone regeneration and angiogenesis in the treatment of early-stage ONFH.

Indexed as

Femur Head NecrosisMesenchymal Stem CellsOsteonecrosisAnimalsBecaplerminDecompressionFemur HeadHumansMaleOsteogenesisRabbitsSteroidsBecaplerminSteroidsCore decompressionFemoral headHipOsteonecrosisRabbitRegenerative medicine

Identifiers

PMID34526115
PMCPMC8444495
OpenAlexW3199972298

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.