[Phytoplankton and zooplankton of the industrial reservoir R-9 (Lake Karachay)].
Priakhin EA, Triapitsina GA, Atamaniuk NI, Osipov DI, Stukalov PM, Ivanov IA, Popova IIa, Akleev AV.AbstractPlanktonic communities of the Reservoir-9 (Lake Karachay, storage reservoir of liquid medium-level radioactive waste of the Mayak Production Association) are exposed to the severe radioactive forcing (in 2010 the total beta-activity of the water was 1.8 x 10(7) Bq/L, total alpha-activity was 1.1 x 10(4) Bq/L), aswell as to the chemical contamination (level of nitrates in water 4.1 g/L). The calculated values of the absorbed dose rate were 130 Gy/day for phytoplankton and 4.0 Gy/day for zooplankton. Extremely low species diversity, the overwhelming dominance of one species (phytoplankton is close to a monoculture of ubiquitous cyanobacteria Geitlerinema amphibium, zooplankton--to a monoculture of rotifers Hexarthrafennica), wide fluctuations in numbers of algae, a low number of zooplankton were the most substantial characteristics of the plankton communities in Lake Karachay. So, plankton communities status is a sign of environmental retrogress in this ecosystem.
Planktonic communities of the Reservoir-9 (Lake Karachay, storage reservoir of liquid medium-level radioactive waste of the Mayak Production Association) are exposed to the severe radioactive forcing (in 2010 the total beta-activity of the water was 1.8 x 10(7) Bq/L, total alpha-activity was 1.1 x 1
Pharmacological mimicking of caloric restriction elicits epigenetic reprogramming of differentiated cells to stem-like self-renewal states.
Oliveras-Ferraros C, Vazquez-Martin A, Menendez JA.SourceCatalan Institute of Oncology, Girona, Catalonia, Spain.
Rejuvenation research.Rejuvenation Res.2010 Oct;13(5):519-26. doi: 10.1089/rej.2010.1022. Epub 2010 Nov 3.
Networks of oncogenes and tumor suppressor genes that control cancer cell proliferation also regulate stem cell renewal and possibly stem cell aging. Because (de)differentiation processes might dictate tumor cells to retrogress to a more stem-like state in response to aging-relevant epigenetic and/o
BACKGROUND: Neo-angiogenesis seems to be a critical feature of breast tumor growth, migration and metastasis. Inhibition of angiogenesis may provide information regarding treatment. Since angiogenesis is the result of complex processes, controlled by several angiogenic (pro- and/or -anti) factors an
… 2) Naevus teleangiectaticus lateralis does not retrogress spontaneously and is extremely insensitive to radiation, but can disappear entirely in rare cases. … 4) Almost all capillary hemangiomas retrogress spontaneously. …
Definition of RETROGRESS intransitive verb: to move backward : revert See retrogress defined for kids ADVERTISEMENT Examples of RETROGRESS <the quality of research at the university lab has begun to retrogress since the ...