ArticlePhysiological research2022
Hypoxia-induced upregulation of matrix metalloproteinase 9 increases basement membrane degradation by downregulating collagen type IV alpha 1 chain.
Article in Physiological research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 11 citations in OpenAlex.
- Hypoxia and HIF signalling in tumour microenvironment: linking immune evasion, metabolic rewiring and epigenetic regulation.Expert reviews in molecular medicine · 2026Review
- MMPs at Work: Deciphering Their Role in the Cellular Mechanisms of Orthodontic Tooth Movement.International journal of molecular sciences · 2026Review
- Hypoxia-induced regulations of cell adhesion molecules and their implications for pathogenesis, diagnosis, and treatment of endometriosis.Frontiers in molecular biosciences · 2026Review
- Integrative blood profiling uncovers inflammatory network signatures in high-altitude pulmonary edema.Bioscience reports · 2025Article
- GPR107: A key driver of breast cancer invasion and metastasis through collagen IV modulation.Cancer gene therapy · 2025Article
- From Hypoxia to Bone: Reprogramming the Prostate Cancer Metastatic Cascade.International journal of molecular sciences · 2025Review
- The Identification of Novel Anti-Inflammatory Effects of Cannabigerol in the Kidney Tissue of Rats Subjected to a High-Fat High-Sucrose Diet.International journal of molecular sciences · 2025Article
- Lymphocyte loss and plasmacytosis are associated with IL-6- and TNF-producing cells in the spleens of fatal COVID-19 cases.Frontiers in cellular and infection microbiology · 2025Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hypoxia can cause basement membrane (BM) degradation in tissues. Matrix metalloproteinase 9 (MMP-9) is involved in various human cancers as well as BM degradation by downregulating type IV collagen (COL4). This study investigated the role of MMP-9 in hypoxia-mediated BM degradation in rat bone marrow based on its regulation of collagen type IV alpha 1 chain (COL4A1). Eighty male rats were randomly divided into four groups based on exposure to hypoxic conditions at a simulated altitude of 7,000 m, control (normoxia) and 3, 7, and 10 days of hypoxia exposure. BM degradation in bone marrow was determined by transmission electron microscopy. MMP-9 levels were assessed by western blot and real-time PCR, and COL4A1 levels were assessed by western blot and immunohistochemistry. Microvessels BMs in bone marrow exposed to acute hypoxia were observed by electron microscopy. MMP-9 expression increased, COL4A1 protein expression decreased, and BM degradation occurred in the 10-, 7-, and 3-day hypoxia groups compared with that in the control group (all P < 0.05). Hypoxia increased MMP-9 levels, which in turn downregulated COL4A1, thereby increasing BM degradation. MMP-9 upregulation significantly promoted BM degradation and COL4A1 downregulation. Our results suggest that MMP-9 is related to acute hypoxia-induced BM degradation in bone marrow by regulating COL4A1.
Indexed as
Identifiers
36281728PMC9814978W4307230344What OpenQuestion holds
Registered trials
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.