Delayed effects of acute whole body lethal radiation exposure in mice pre-treated with BBT-059

The threat of nuclear exposure is heightened and it is imperative to identify potential countermeasures for acute radiation syndrome. Currently no countermeasures have been approved for prophylactic administration. Effective countermeasures should function to increase survival in the short term as w...

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Veröffentlicht in:Scientific reports 2020-04, Vol.10 (1), p.6825, Article 6825
Hauptverfasser: Sharma, Neel K., Holmes-Hampton, Gregory P., Kumar, Vidya P., Biswas, Shukla, Wuddie, Kefale, Stone, Sasha, Aschenake, Zemenu, Wilkins, William L., Fam, Christine M., Cox, George N., Ghosh, Sanchita P.
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container_title Scientific reports
container_volume 10
creator Sharma, Neel K.
Holmes-Hampton, Gregory P.
Kumar, Vidya P.
Biswas, Shukla
Wuddie, Kefale
Stone, Sasha
Aschenake, Zemenu
Wilkins, William L.
Fam, Christine M.
Cox, George N.
Ghosh, Sanchita P.
description The threat of nuclear exposure is heightened and it is imperative to identify potential countermeasures for acute radiation syndrome. Currently no countermeasures have been approved for prophylactic administration. Effective countermeasures should function to increase survival in the short term as well as to increase the overall prognosis of an exposed individual long term. Here we describe the use of a promising radiation countermeasure, BBT-059, and the results of a long term mouse study (up to 12 months) in the male CD2F1 strain using 60 Co gamma irradiation (~0.6 Gy/min, 7.5–12.5 Gy). We report the dose reduction factor of 1.28 for BBT-059 (0.3 mg/kg) compared to control administered 24 h prior to irradiation. In the long term study animals showed accelerated recovery in peripheral blood cell counts, bone marrow colony forming units, sternal cellularity and megakaryocyte numbers in drug treated mice compared to formulation buffer. In addition, increased senescence was observed in the kidneys of animals administered control or drug and exposed to the highest doses of radiation. Decreased levels of E-cadherin, LaminB1 and increased levels of Cyc-D and p21 in spleen lysates were observed in animals administered control. Taken together the results indicate a high level of protection following BBT-059 administration in mice exposed to lethal and supralethal doses of total body gamma-radiation.
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Currently no countermeasures have been approved for prophylactic administration. Effective countermeasures should function to increase survival in the short term as well as to increase the overall prognosis of an exposed individual long term. Here we describe the use of a promising radiation countermeasure, BBT-059, and the results of a long term mouse study (up to 12 months) in the male CD2F1 strain using 60 Co gamma irradiation (~0.6 Gy/min, 7.5–12.5 Gy). We report the dose reduction factor of 1.28 for BBT-059 (0.3 mg/kg) compared to control administered 24 h prior to irradiation. In the long term study animals showed accelerated recovery in peripheral blood cell counts, bone marrow colony forming units, sternal cellularity and megakaryocyte numbers in drug treated mice compared to formulation buffer. In addition, increased senescence was observed in the kidneys of animals administered control or drug and exposed to the highest doses of radiation. Decreased levels of E-cadherin, LaminB1 and increased levels of Cyc-D and p21 in spleen lysates were observed in animals administered control. 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Currently no countermeasures have been approved for prophylactic administration. Effective countermeasures should function to increase survival in the short term as well as to increase the overall prognosis of an exposed individual long term. Here we describe the use of a promising radiation countermeasure, BBT-059, and the results of a long term mouse study (up to 12 months) in the male CD2F1 strain using 60 Co gamma irradiation (~0.6 Gy/min, 7.5–12.5 Gy). We report the dose reduction factor of 1.28 for BBT-059 (0.3 mg/kg) compared to control administered 24 h prior to irradiation. In the long term study animals showed accelerated recovery in peripheral blood cell counts, bone marrow colony forming units, sternal cellularity and megakaryocyte numbers in drug treated mice compared to formulation buffer. In addition, increased senescence was observed in the kidneys of animals administered control or drug and exposed to the highest doses of radiation. 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subjects 13/51
14/19
631/136/7
64/60
692/53/2423
Alkaline Phosphatase - blood
Animals
Aspartate Aminotransferases - blood
Blood Cell Count
Bone marrow
Cadherins - metabolism
Clone Cells
Colony-Forming Units Assay
Dose-Response Relationship, Radiation
Drug dosages
E-cadherin
Gamma Rays
Hematopoietic Stem Cells - metabolism
Hematopoietic Stem Cells - radiation effects
Humanities and Social Sciences
Interleukin-11 - pharmacology
Irradiation
Kidney - pathology
Kidney - radiation effects
Kidneys
Liver - pathology
Liver - radiation effects
Long term
Lysates
Male
Medical prognosis
Mice
multidisciplinary
Multidisciplinary Sciences
Organ Specificity - radiation effects
Peripheral blood
Radiation Exposure
Science
Science & Technology
Science & Technology - Other Topics
Science (multidisciplinary)
Senescence
Spleen
Survival Analysis
Whole-Body Irradiation
title Delayed effects of acute whole body lethal radiation exposure in mice pre-treated with BBT-059
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