Gamma radiation resistant bacteria

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August undefined, 2024

WebResistance of microorganisms to gamma radiation is mainly dependent on the microorganisms' capability to repair single strand breaks due to the activity of their DNA repair enzymes ( 13 ). Strains which don't have this competence are a lot more radiosensitive than the others ( 14 ). Deinococcus radiodurans is an extremophilic bacterium and one of the most radiation-resistant organisms known. It can survive cold, dehydration, vacuum, and acid, and therefore is known as a polyextremophile. It has been listed as the world's toughest known bacterium in The Guinness Book Of World Records.

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WebDec 1, 2016 · Two Gram-stain-negative, oxidase-negative, catalase-positive, aerobic and coccus-shaped bacterial strains, KSY3-6T and JSH6-18, were isolated from soil in South Korea. Strains KSY3-6T and JSH6-18 showed high resistance to gamma-ray and UVC irradiation. The 16S rRNA gene sequences of strains KSY3-6T and JSH6-18 showed a … WebFeb 18, 2011 · Ultraviolet radiation (UVR) resistance in variety of radioresistant micro-organisms Radiation is energy in the form of particles or electromagnetic waves (i.e. gamma rays, X-rays, UV radiation or radio waves, etc.). The most serious effect of radiation is the oxidative damage among the vital biomolecules including proteins and … flyer fazer

Radiation-Resistant Bacteria Encyclopedia.com

WebRadiation-resistant bacteria encompass eight species of bacteria in a genus known as Deinococcus. The prototype species is Deinococcus radiodurans. This and the other species are capable of not only survival but of growth in the presence of radiation that is … WebIonizing-radiation-resistant organisms (IRRO) were defined as organisms for which the dose of acute ionizing radiation (IR) required to achieve 90% reduction (D10) is greater than 1,000 gray (Gy) [1] Radioresistance is surprisingly high in many organisms, in contrast to previously held views. WebThis radiation has been implemented to a lesser extent compared to UV radiation, as it has a total of 59 related documents. The rates of removal of gamma radiation for certain antibiotics, and antibiotic resistance bacteria are high (see Table 7). However, not all are degraded with the same radiation dose, due to their properties and conditions. flyer gym

What is the effect of gamma rays on the bacteria? ResearchGate

Webgamma radiation Define Sterilization. removal or destruction of all microbial life form on an object Define disinfection The process of reducing or inhibiting microbial growth on a nonliving surface. Define Antisepsis The process of … WebWith a 1.7 mm thick shield of melanized radiotrophic Cladosporium sphaerospermum, measurements of radiation nearing the end of the experimental trial were found to be 2.42% lower, demonstrating radiation deflecting capabilities five times that of the control group. flyer igreja editávelWebApr 12, 2024 · As the amount of radiation used for diagnosis and treatment in medical institutions increases, the scope and frequency of operators and patients being exposed to radiation increase [].Medical radiation accounts for approximately 15% of the radiation that humans are exposed to in the natural state, and the radiation exposure of medical … flyer isra miraj

"WebApr 14, 2024 · In recent years, multidrug resistance has emerged as a major challenge not only in chemotherapy, but also in antibiotic therapy due to the emergence and spread of bacterial pathogens [].Nevertheless, in addition to intrinsic antibacterial agents [], certain medicinal plants also generate inhibitors of multidrug resistance [], which are capable of … " - Gamma radiation resistant bacteria

Gamma radiation resistant bacteria

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WebJan 9, 2024 · With an average background radiation of 5 × 10 –8 Gy/h on the Earth, various bacterial members of the genus Deinococcus are resistant to doses of ionizing radiation of more than 25 kGy (Battista, 1997). At the same time, it becomes clear that the Deinococcus genus is widely distributed in nature. WebJan 9, 2024 · Cell radiosensitivity is a function of many interdependent factors, such as those acting in the cell (e.g., physiological genome stability, stability of repair systems, …

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WebIonizing-radiation-resistant organisms (IRRO) were defined as organisms for which the dose of acute ionizing radiation (IR) required to achieve 90% reduction (D10) is greater … WebApr 23, 2024 · This research work aims to investigate the radiation shielding ability of a Yb 3+-doped calcium borotellurite glass system.The system has the basic composition of CaF 2 –CaO–B 2 O 3 –TeO 2 –Yb 2 O 3 but is denoted as TeBYbn for simplicity. The effect of increasing the TeO 2 content in the glasses from 10 to 54 mol% was investigated, with …

WebJun 22, 2024 · Deinococcus koreensis sp. nov., a gamma radiation-resistant bacterium isolated from river water Microbiology Society Volume 68, Issue 8 Other Free Deinococcus koreensis sp. nov., a gamma radiation-resistant bacterium isolated from river water Kiwoon Baek 1 , Eu Jin Chung 2 , Gang-Guk Choi 2 , Min-Kyu Kim 3 , Sangyong Lim 3 , … WebJun 30, 2024 · To counteract the deleterious effects caused by radiation exposure, radiation- resistant organisms employ a series of defensive systems, such as changes …

WebJan 27, 2009 · A first line of defence against IR in extremely radiation-resistant bacteria might be the accumulation of manganese complexes, … WebCapsules can shield bacterial cells from UV light by absorbing or scattering the radiation, which prevents it from damaging the DNA of the cells. a. Endospores: Endospores are highly resistant, dormant structures produced by some bacteria, such as Bacillus and Clostridium, in response to unfavorable environmental conditions.

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WebOct 17, 2013 · Gamma Radiation Resistance Test Strains DY53 T and DY43 have 7 % survival resistance at 5 kGy gamma radiation (85 % survival for positive control D. radiodurans R1) and 0.003 % survival rate at 10 kGy gamma radiation (70 % survival rate for D. radiodurans R1) (Fig. 2 ). flyer isra miraj 2023WebThe D-10 quantal value describes the ability of a chemical or physical agent to reduce an exposed Microbial population 90% (one log 10) under standard conditions of Time, Temperature, Concentration or Dose. It is widely used in infection and contamination control in pharmaceuticals, medical devices, tissue and biotech. flyer imobiliárioWebMicroorganisms with the ability to survive high doses of radiation are known as radioresistant or radiation-resistant extremophiles. Excessive or intense exposure to … flyer jazzWebDeinococcus survive when their DNA is exposed to high doses of gamma and UV radiation. Whereas other bacteria change their structure in the presence of radiation, such as by forming endospores, Deinococcus … flyerjakobWebFour gamma- and UV-radiation-resistant bacterial strains, designated TDMA-24 (T), TDMA-24-2, TDMA-24-3 and TDMA-24-4, were isolated from a fresh-water sample collected at Misasa, Tottori, Japan. Cells of these strains were Gram-reaction-positive, non-motile, non-spore-forming, rod-shaped and formed red colonies. flyer isra miraj 2022WebDec 12, 2024 · Generally, the resistance of the strains to gamma radiation can be partly due to the presence of the enzymatic antioxidant defense systems including catalase, peroxidases, and non-enzymatic antioxidants (such as carotenoids), and molecular repair processes that function with high efficiency. flyer jobbörseWebFurther, the K-12-Φ lysogen became cytotoxic, more sensitive to gamma irradiation and oxidative stress, and slightly more acid resistant. IMPORTANCE Gamma irradiation of food products can provide an effective means of eliminating bacterial pathogens such as enterohemorrhagic Escherichia coli (EHEC) O157:H7, a significant foodborne pathogen ... flyer jogador