PSIX-17 - Cytokine profile of cow blood in the treatment of acute postpartum endometritis with recombinant α -, γ-interferons

Friday, July 16, 2021

1:15 PM – 2:15 PM EST

Location: Kentucky International Convention Center, Poster Hall/North Lobby

Presenting Author(s)

Sergey Shabunin, DV

Head of the Institute
All-Russian Veterinary Research Institute of Pathology, Pharmacology and Therapy
Voronezh, Voronezh, Russia

Author(s)

VM

Vitaly Mikhalev

All-Russian Veterinary Research Institute of Pathology, Pharmacology and Therapy
Voronezh, Voronezh, Russia

The aim of the study was to research the cytokine profile of cow blood in the treatment of acute postpartum endometritis with the use of recombinant α-, γ-interferons. Animals of the first group (n = 9) with a diagnosis of acute postpartum endometritis were intramuscularly injected with propranolol hydrochloride, denatured emulsified placenta, and nioxityl. Propranolol hydrochloride was administered for 4 days at a dose of 10 ml/animal at 24-hour intervals. The denatured emulsified placenta was injected subcutaneously on days 1-5-9 at a dose of 25 ml /animal. Nioxityl was injected intrauterine at a dose of 150 ml three times with a 48-hour interval. Cows of the second group (n = 11) with the same diagnosis were additionally injected intramuscularly with bovine recombinant α-, γ-interferons three times in 1-3 days at a dose of 5 ml/animal, 1 cm³ of which contains at least 1x10⁴ IU/cm³ of the total antiviral activity of bovine recombinant α-, γ-interferons. Blood samples are taken from all groups before and at the end of the experiment. Blood samples are examined for the content of interleukin-2 (IL-2), interleukin-4 (IL-4), tumor necrosis factor alpha (TNFα), interleukin-10 (IL-10) using Bovine Elisa Kit Clood-Clone Corp (USA). The therapeutic effectiveness in the first group was 77.8%, in the second - 90.9%, which is 13.1% more. At the end of the course, the level of IL-2 decreased by 42.5% (43.5±4.2 pg/ml, P < 0.01), TNF-Α by 9.1% (457.9±34.6 pg/ml), the level of IL-4 increased by 14.8% (44.2±3.5 pg/ml, P < 0.05), IL-10 by 56.6% (35.7±2.8 pg/ml, P < 0.01). In the second group, the level of anti-inflammatory cytokines decreased: IL–2 by 48.7% (38.8±1.6 pg/ml, P < 0.01), TNFα by 26% (372.5±17.6 pg/ml, P < 0.05) and increased anti–inflammatory cytokines: IL-4 by 46.2% (56.3±4.1 pg/ml, P < 0.001) and IL-10 by 80.3% (41.1±3.5 pg/ml, P < 0.001), which indicates a decrease in the inflammatory response.