Role of bone marrow transplantation in reducing the dangerous effect of multi-walled carbon nanotubes or/and gamma rays on male rats

Aim of the work: this study evaluated the efficacy of bone marrow [BM] transplantation to protect male rats from dangerous effect of multi-walled carbon nanotubes [MWCNTs] or/and y-irradiation on the hematopoietic and lung tissues

Materials and methods: experimental animals were divided into 8 groups each consist of 6 male albino rats. Control group, BM-injected group, MWCNTs-injected group, 5Gy y-irradiated group, 5Gy y-irradiated+ MWCNTs-injected group, MWCNTs-injected+ BM-injected group, 5Gy y-irradiated+ BM-injected group and 5Gy of y-irradiated+ MWCNTs-injected + BM-injected group. All the treated animal groups were sacrificed after 28 days of the treatments. Blood components, MDA and GSH levels in the lung tissue were analyzed. The histopathological study in the lung tissue was also recorded

Results: exposure to MWCNTs or/and y-radiation induced a significant decrease in certain blood components [WBCs, RBCs, Hb content, HCT value and PLT count]

Furthermore, a significant elevation in MDA level and a significant decrease in GSH content were detected in the lung tissue

The histopathological changes after exposure of rats to MWCNTs recorded perivasculitis, atelectasis and interstitial pneumonia. Also, y-radiation represented more collapsed and thickened walls in the alveoli, thickened bronchiolar walls with partial epithelial lining and foci of pulmonary hemorrhage in the lung tissue. The effect of BM transplantation after MWCNTs or/and y-radiation ameliorated the values of blood components, MDA and GSH levels in the lung tissue. The improvement occurred by BM transplantation in rats treated with MWCNTs or/and exposed to y-radiation were also recorded. The lung tissue showed numerous alveoli with thin interalveolar septa, alveolar sacs and terminal bronchioles with highly folded mucosa

Conclusion: treatment with BM transplantation improved the most deleterious parameters obtained in the blood and lung tissue of MWCNTs exposed or/and y-irradiated rats

protective role of transplanted bone marrow cells against injuries induced by a chemical carcinogen and / or gamma-rays in kidney tissue of rats

Aim of the work: This work aimed to study the biochemical and histopathological changes in the kidney of male albino rats post exposure to 6Gy of gamma radiation and the protective role of transplanted bone marrow cells against damage induced in rat's kidney by a chemical carcinogen

Materials and Methods: In this study, forty eight healthy and active male albino rats about 120 grams in body weight were used. The animals were housed in plastic cages under normal temperature, pressure, humidity and good ventilation conditions during the whole period of experimentation. The animals were fed on a standard pellet diet and water

Results: Exposure of rats to gamma-radiation caused a significant increase in kidney function tests, decreased significantly the antioxidants with numerous histopathological changes in the rat kidney tissue. These changes were ameliorated by bone marrow transplantation either after whole body gamma-irradiation and/or Fe-NTA treatment

Conclusion: Bone marrow transplantation either after whole body gamma-irradiation and/or Fe-NTA treatment restored the kidney functions and ameliorated the oxidative stress and antioxidants markers. The histopathological observations showed amelioration in the structure of the kidney cortex. So, BM transplantation exerts some curative effects on the function and histological structure of kidney cortex of rats exposed to gamma-irradiation and/or Fe-NTA treatment

protective effect of BM transplantation on liver tissue by a chemical carcinogen or gamma- radiation in rats

Aim of work: this work aimed to study the biochemical and histopathological changes in the liver of male albino rats post exposure to 6Gy of gamma radiation and the possible protective effect of bone marrow [BM] transplantation on the liver tissues by a chemical carcinogen ferric nitrilotriacetate [Fe-NTA] or gamma- radiation in rats

Materials and methods: In this study, thirty six healthy and active male albino rats about 120 grams in body weight were used. The animals were housed in plastic cages under normal temperature, pressure, humidity and good ventilation conditions during the whole period of the experiment. The animals were fed on a standard pellet diet and water. Animals were categorized into six groups and served as the following groups: control, gamma irradiated[R], Fe-NTA, BM+R, BM + Fe-NTA and BM.+Fe-NTA+R

Results: the present results suggested that exposure to gamma-radiation or Fe-NTA induced a significantly disturbance in the liver functions and structure. They increased significantly the oxidative stress and decreased significantly the antioxidants tissues and they also increased necrotic and apoptotic cells in rat's liver tissue. Bone marrow transplantation either after whole body gamma-irradiation or Fe-NTA treatment restored the liver functions and structure. BT also ameliorated the oxidative stress and antioxidative markers. The histopathological observations recorded some amelioration in the apoptotic and necrotic evaluation in liver tissue