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Total 390 results found since Jan 2013.
Permeation kinetics of dimethyl sulfoxide in porcine corneoscleral discs
Cryobiology. 2023 Aug 10:104566. doi: 10.1016/j.cryobiol.2023.104566. Online ahead of print.ABSTRACTThe cornea is the transparent tissue in front of the eye that bends light to help the eye focus. More than five million people's vision can be restored by a corneal transplant (keratoplasty), but there is a scarcity of suitable donor tissue. Cryopreservation could potentially increase the on-demand availability of corneas by reducing expiration and contamination during hypothermic storage, and allow equitable distribution. Understanding the transport of water and cryoprotectants across the tissue is important in developing e...
Source: Cryobiology - August 12, 2023 Category: Biology Authors: Sergio Enrique Tapia Lishner Leah A Marquez-Curtis Janet A W Elliott Source Type: research
Space-for-time substitutions in climate change ecology and evolution
Biol Rev Camb Philos Soc. 2023 Aug 9. doi: 10.1111/brv.13004. Online ahead of print.ABSTRACTIn an epoch of rapid environmental change, understanding and predicting how biodiversity will respond to a changing climate is an urgent challenge. Since we seldom have sufficient long-term biological data to use the past to anticipate the future, spatial climate-biotic relationships are often used as a proxy for predicting biotic responses to climate change over time. These 'space-for-time substitutions' (SFTS) have become near ubiquitous in global change biology, but with different subfields largely developing methods in isolation...
Source: Biological Reviews of the Cambridge Philosophical Society - August 9, 2023 Category: Biology Authors: Rebecca S L Lovell Sinead Collins Simon H Martin Alex L Pigot Albert B Phillimore Source Type: research
Mitochondrial transplantation rescues neuronal cells from ferroptosis
In this study, we explored the use of mitochondrial transplantation as a novel therapeutic approach for preventing ferroptotic neuronal cell death. Our data showed that isolated exogenous mitochondria were incorporated into both healthy and ferroptotic immortalized hippocampal HT-22 cells and primary cortical neurons (PCN). The mitochondrial incorporation was accompanied by increased metabolic activity and cell survival through attenuating lipid peroxidation and mitochondrial superoxide production. Further, the function of mitochondrial complexes I, III and V activities contributed to the neuroprotective activity of exogen...
Source: Free Radical Biology and Medicine - August 3, 2023 Category: Biology Authors: Tingting Chen Nad'a Majern íková Alejandro Marmolejo-Garza Marina Trombetta-Lima Ang élica María Sabogal-Guáqueta Yuequ Zhang Ruth Ten Kate Minte Zuidema Patty P M F A Mulder Wilfred den Dunnen Reinoud Gosens Elisabeth Verpoorte Carsten Culmsee Ulric Source Type: research
Determination of thiamethoxam residues and dissipation kinetic in tomato plants and its efficacy against Bemisia tabaci under open field eco system
Braz J Biol. 2023 Jul 24;83:e273105. doi: 10.1590/1519-6984.273105. eCollection 2023.ABSTRACTWhitefly, Bemisia tabaci cause important losses for many crops especially tomato, therefore farmers often use many chemical insecticides which had dangerous side effects on human beings and environment, thus there are need to determine the residues of these chemicals in plant . The dissipation of thiamethoxam in tomato leaves and fruits followed the first order kinetics; Half-lives were 2.91 and 3.15 days for fruits and leaves, respectively. The residues of thiamethoxam were determined using a QuEChERS method with HPLC-DAD and it w...
Source: Braz J Biol - July 26, 2023 Category: Biology Authors: Z M Al Dhafar M A A Abdel Razik M A Osman M E Sweelam Source Type: research
Brassavola tuberculata Hook.: in vitro growth and ex vitro establishment as a function of the micropropagation system and sucrose
This study examines the in vitro growth and ex vitro establishment of Brassavola tuberculata in relation to the micropropagation system and sucrose concentration employed in the in vitro culture. A completely randomized experimental design was utilized, employing a 2 x 5 factorial arrangement. The experimental period began with seedlings cultivated in vitro for 180 days, which were subsequently transferred to Murashige and Skoog culture media containing sucrose concentrations of 0, 15, 30, 45, or 60 g L-1. The cultures were subjected to two micropropagation systems: conventional and gas exchange. After 90 days of in vitro ...
Source: Braz J Biol - July 19, 2023 Category: Biology Authors: J S Soares J C M Ramos J C Sorgato L M Ribeiro L C Reis Source Type: research
