Medical Radiology and Radiation Safety. 2023. Vol. 68. № 2
DOI: 10.33266/1024-6177-2023-68-2-16-20
Yu.B. Deshevoi, T.A. Nasonova, O.A. Dobrynina, V.G. Lebedev,
T.A. Astrelina, A.S. Samoylov
The Effect of Drugs for Normalize Blood Supply and Trophism of Irradiated Tissues, as well as a Broad-Spectrum Antibiotic on the Course of Severe Local Radiation Injuries in Rats
A.I. Burnazyan Federal Medical Biophysical Center, Moscow, Russia
Contact person: Yu.B. Deshevoi, e-mail:
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ABSTRACT
Purpose: To study in the experiment the therapeutic efficacy of drugs that normalize blood supply and trophism of irradiated tissues, as well as a complex broad-spectrum antibiotic, for the course of severe local radiation lesions to justify the clinical use of these drugs in this pathology.
Material and methods: Wistar-Kyoto inbred rats were exposed to local X-rays in the ilio-lumbar region of the back at a dose of 110 Gy (tube voltage 30 kV, current 6.1 mA, Al filter 0.1 mm thick), at a dose rate of 20.1 Gy / min. Irradiation field area was 8.5 cm2. Radiation exposure caused the formation of long-term (up to 3.5–4 months) non-healing radiation ulcers of the skin without a critical radiation load on the underlying tissues. For the treatment of radiation lesions, an antibiotic was used – levotetrasulfin forte, as well as drugs that affect the blood supply and trophism of irradiated tissues – pentoxifylline and detralex. The drugs were administered daily both in isolation from each other and together during the period (from the 21st to the 42nd or from the 28th to the 48th day after irradiation), when the radiation ulcer formed and its gradual healing began. The everity of radiation skin lesions and the effects of therapy were assessed in dynamics by clinical manifestations and using planimetry.
Results: It was found that the separate use of drugs in the treatment of severe local radiation lesions was not very effective. However, with the combined administration of drugs, a noticeable increase in the rate of healing of radiation ulcers was revealed. Thus, it was shown that with the joint administration of pentoxifylline (intraperitoneal, 50.0 mg / kg), detralex (75.0 mg / kg, per os) and levotetrasulfin forte (intraperitoneal, 0.1 ml / kg), the area of radiation ulcers in treated animals in the period from 98 to 126 days after irradiation was 26–80 % less compared to irradiated controls.
Conclusion: The experiments show the possibility of successful use of a complex antibiotic in combination with drugs that improve blood supply and trophism of irradiated tissues, in the treatment of severe local radiation lesions.
Keywords: local irradiation, radiation ulcer of the skin, drug therapy, antibiotic, pentoxifylline, detralex, rats
For citation: Deshevoi YuB, Nasonova TA, Dobrynina OA, Lebedev VG, Astrelina TA, Samoylov AS. The Effect of Drugs for Normalize Blood Supply and Trophism of Irradiated Tissues, as well as a Broad-Spectrum Antibiotic on the Course of Severe Local Radiation Injuries in Rats. Medical Radiology and Radiation Safety. 2023;68(2):16–20. (In Russian). DOI: 10.33266/1024-6177-2023-68-2-16-20
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PDF (RUS) Full-text article (in Russian)
Conflict of interest. The authors declare no conflict of interest.
Financing. The study had no sponsorship.
Contribution. Article was prepared with equal participation of the authors.
Article received: 20.11.2022. Accepted for publication: 25.01.2023.