Introduction: With the rapid advancement of technology in today's world, the use of ionizing radiation and radioactive materials has been expanding significantly. The use of radioactive resources and equipment in medical sciences is increasing. Failure to observe safety precautions when working with radiation can have serious risks for employees, people, the environment and eve...

Introduction: Ionizing radiation in medical imaging is one of the dominant sources of exposure, and correct knowledge of radiation protection, affects staff safety behaviors during procedures. This study aimed to assess the radiation protection Knowledge, Attitude and Practice (KAP) amongst nuclear medicine centers' staff in Iran. Methods: To evaluate the...

Carcinogenic effects of ionizing radiation and benzo[a]pyrene-7,8-diol-9,10-epoxide (B[a]PDE), a major metabolite of benzo[a]pyrene (B[a]P), have been well demonstrated both in vitro and in vivo. Two-stage carcinogenesis results indicate that mouse skin is highly susceptible to both ionizing radiation and benzo[a]pyrene-7,8-diol-9,10epoxide (B[a]PDE), a major metabolite of benzo[a]pyrene (B[a]P...

Ionizing radiation induces a diverse spectrum of DNA lesions, including strand breaks and oxidized bases. In mammalian cells, ionizing radiation-induced lesions are targets of non-homologous end joining, homologous recombination, and base excision repair. In vitro assays show a potential involvement of DNA polymerase lambda in non-homologous end joining and base excision repair. In this study, ...

Introduction: Retinoblastoma (RB) is a malignant retinal tumor, which affects infants and children. This cancer happens through a mutation in the retinoblastoma tumor suppressor genes (RB1). Inactivation of RB1 has been observed in more than 97% of all retinoblastoma patients with mutations. In recent years, RB treatment has developed significantly. RBchr('39')s treatment methods can be one or ...

Objective: To discover the role of MCPH1 in the DNA double-strand damage induced by ionizing radiation and the relationship with H2AX in esophageal cancer cell ECA109. Methods: ECA109 cancer cells will be accepted 8 Gy 1 h after irradiation for protein extraction and immunofluorescence observed MCPH1 and H2AX protein expression and nuclear foci changes. Establish a stable low expression of H2AX...

By solving the time-dependent radiation transfer problem of stellar radiation through evolving superbubbles within a smoothly varying H I distribution, we have estimated the fraction of ionizing photons emitted by OB associations that escapes the H I disk of our Galaxy. We considered a coeval star-formation history and a Gaussian star-formation history with a time spread σt = 2 Myr. We find tha...

STATEMENT OF THE PROBLEM Use of traditional medicine to relieve human sufferings has a very long history. The effects of these plants in wound curing and subsequently making the best mucosa patch for treatment of oral ulcers is still under investigation. PURPOSE The main goal of present research work is to assess the efficacy of Myrtus communis L., Camellia sinensis L. and Zataria multiflora ...