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Cited by 257

The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.

Expression of hypoxia-inducible factor-1α in the brain of rats during chronic hypoxia

Chávez, Juan C., Agani, Faton, Pichiule, Paola, LaManna, Joseph C.·2000·Journal of Applied Physiology

Abstract

Hypoxia-inducible factor-1 (HIF-1) is a transcription factor that regulates adaptive responses to the lack of oxygen in mammalian cells. HIF-1 consists of two proteins, HIF-1α and HIF-1β. HIF-1α accumulates under hypoxic conditions, whereas HIF-1β is constitutively expressed. HIF-1α and HIF-1β expression were measured during adaptation to hypobaric hypoxia (0.5 atm) in rat cerebral cortex. Western blot analyses indicated that HIF-1α rapidly accumulated during the onset of hypoxia and did not fall for 14 days but fell to normal by 21 days despite the continuous low arterial oxygen tension. Immunostaining showed that neurons, astrocytes, ependymal cells, and possibly endothelial cells were the cell types expressing HIF-1α. Genes with hypoxia-responsive elements were activated under these conditions, as evidenced by elevated vascular endothelial growth factor and glucose transporter-1 mRNA levels. When 21-day-adapted rats were exposed to a more severe hypoxic challenge (8% oxygen), HIF-1α accumulated again. On the basis of these results, we speculate that the vascular remodeling and metabolic changes triggered during prolonged hypoxia are capable of restoring normal tissue oxygen levels.

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Metadata

Authors
Chávez, J. C., Agani, F., Pichiule, P., & LaManna, J. C.
Venue
Journal of Applied Physiology
Published
2000-11-01
Volume
89
Issue
5
Pages
1937-1942
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2179556324
Cited by
257
References
26
FWCI
3.52
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Expression of hypoxia-inducible factor-1α in the brain of rats during chronic hypoxia. https://app.cochat.ai/papers/10.1152/jappl.2000.89.5.1937
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Chávez, J. C., Agani, F., Pichiule, P., & LaManna, J. C. (2000). Expression of hypoxia-inducible factor-1α in the brain of rats during chronic hypoxia. Journal of Applied Physiology. https://doi.org/10.1152/jappl.2000.89.5.1937

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