Evidence map›Paper›PMID 40670874›Full record

ArticleInternational urology and nephrology2026

Hyperbaric oxygen therapy in a rat model of cyclophosphamide-induced hemorrhagic cystitis.

Cagri Can Makar, Elif Sanli, Gizem Koral, Ozge Hurdogan, Ahmet Veysel Gumus, Mehmet Guven Gunver, Yasemin Ozluk, Samil Aktas

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Article in International urology and nephrology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Cagri Can MakarIstanbul Faculty of Medicine, Department of Underwater and Hyperbaric Medicine, Istanbul University, Turgut Özal Avenue No: 118, 34093, Fatih, Istanbul, Turkey. ccanmakar@gmail.com.ORCID http://orcid.org/0000-0002-6940-2281
Elif SanliAziz Sancar Institute of Experimental Medicine, Department of Neuroscience, Istanbul University, Fatih, Istanbul, Turkey.
Gizem KoralAziz Sancar Institute of Experimental Medicine, Department of Neuroscience, Istanbul University, Fatih, Istanbul, Turkey.
Ozge HurdoganIstanbul Faculty of Medicine, Department of Pathology, Istanbul University, Fatih, Istanbul, Turkey.
Ahmet Veysel GumusIstanbul Faculty of Medicine, Department of Underwater and Hyperbaric Medicine, Istanbul University, Turgut Özal Avenue No: 118, 34093, Fatih, Istanbul, Turkey.
Mehmet Guven GunverDepartment of Biostatistics, Istanbul University, Fatih, Istanbul, Turkey.
Yasemin OzlukIstanbul Faculty of Medicine, Department of Pathology, Istanbul University, Fatih, Istanbul, Turkey.
Samil AktasIstanbul Faculty of Medicine, Department of Underwater and Hyperbaric Medicine, Istanbul University, Turgut Özal Avenue No: 118, 34093, Fatih, Istanbul, Turkey.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the effects of hyperbaric oxygen therapy (HBOT) on inflammation, oxidative stress, and bladder damage in a cyclophosphamide (CP)-induced hemorrhagic cystitis (HC) rat model.

methodsForty male Wistar albino rats received a single intraperitoneal dose of 200 mg/kg CP to induce HC. Rats were assigned to either the HBOT or control groups and sacrificed on days 3, 7, and 14. The HBOT group received 6, 14, or 28 sessions of 100% oxygen at 2.4 ATA for 90 min. Outcomes included mortality, weight loss, bladder weight, macroscopic edema and hemorrhage scores, histopathology, Ki-67 immunostaining, and levels of cytokines (IL-1β, IL-4, IL-6, MCP-1, TNF-α) and malondialdehyde in bladder tissue, serum, and urine. Cytokines were quantified using the Luminex assay and malondialdehyde by ELISA.

resultsMortality and weight loss were similar between groups. On day 3, the HBOT group showed significantly lower bladder weights and hemorrhage scores (p < 0.01), with no significant differences in edema. On day 7, IL-1β and MCP-1 levels were higher in the HBOT group (p = 0.02). Malondialdehyde levels were significantly elevated in the control group on day 3. Histopathological and other cytokine findings showed no significant differences.

conclusionsHBOT may provide early but transient benefits in alleviating HC based on macroscopic findings; however, these effects were not supported by sustained histopathological or molecular improvements. The high-dose CP model may have masked the potential therapeutic effects of HBOT. Further studies using lower or fractionated CP dosing and extended observation periods are warranted to better evaluate the therapeutic potential of HBOT.

Indexed as

CystitisHemorrhageHyperbaric OxygenationAnimalsCyclophosphamideCystitis, HemorrhagicCytokinesDisease Models, AnimalMaleMalondialdehydeOxidative StressRatsRats, WistarUrinary BladderCyclophosphamideCytokinesMalondialdehydeAnimal modelsBladder inflammationCyclophosphamideHemorrhagic cystitisHyperbaric oxygen therapyUrinary bladder diseases

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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.