Dynamics of intracellular Ca$^{2+}$ oscillations in the presence of multisite Ca$^{2+}$-binding proteins [PDF]
, 2009 We study the dynamics of intracellular calcium oscillations in the presence of proteins that bind calcium on multiple sites and that are generally believed to act as passive calcium buffers in cells. We find that multisite calcium-binding proteins set a sharp threshold for calcium oscillations. Even with high concentrations of calcium-binding proteins,
arxiv +1 more source
To Deconvolve, or Not to Deconvolve: Inferences of Neuronal Activities using Calcium Imaging Data [PDF]
arXiv, 2021 With the increasing popularity of calcium imaging data in neuroscience research, methods for analyzing calcium trace data are critical to address various questions. The observed calcium traces are either analyzed directly or deconvolved to spike trains to infer neuronal activities. When both approaches are applicable, it is unclear whether deconvolving
arxiv
Lack of direct evidence for a functional role of voltage-operated calcium channels in juxtaglomerular cells [PDF]
, 1990 In this study we have examined the role of voltage-gated calcium channels in the regulation of calcium in juxtaglomerular cells. Using a combination of patch-clamp and single-cell calcium measurement we obtained evidence neither for voltage-operated ...
Chegini, S. +3 more
core +1 more source
Pesquisa Brasileira em Odontopediatria e Clínica Integrada, 2019 Objective: To evaluate and compare the remineralization potential of a dentifrice containing bioactive glass and a topical cream containing casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) in remineralizing artificial carious lesion on enamel.
Ratheesh Rajendran +5 more
semanticscholar +1 more source
Preliminary characterization of calcium chemical environment in apatitic and non-apatitic calcium phosphates of biological interest by X-ray absorption spectroscopy [PDF]
, 2005 Several reports have mentioned the existence of non-apatitic environments of phosphate and carbonate ions in synthetic and biological poorly crystalline apatites.
Banu, Mihai +4 more
core +1 more source
Calcium Carbonate Polyamorphism and Its Role in Biomineralization: How Many Amorphous Calcium Carbonates Are There? [PDF]
Angew. Chem. Int. Ed., 51, 11960-11970, 2012, 2012 Although the polymorphism of calcium carbonate is well known, and its polymorphs-calcite, aragonite, and vaterite-have been highly studied in the context of biomineralization, polyamorphism is a much more recently discovered phenomenon, and the existence of more than one amorphous phase of calcium carbonate in biominerals has only very recently been ...
arxiv +1 more source
, 2002 This lithograph answers the question: Where do the elements around us come from? Many are produced in stars, and liberated when these stars explode. It features an attractive image of the remains of an exploded star, taken by NASA's new Chandra X-ray ...
core
A novel causal mechanism for grey squirrel bark stripping: The Calcium Hypothesis [PDF]
, 2016 Grey squirrels, Sciurus carolinensis, damage trees in the UK by stripping bark and eating the underlying phloem; squirrel motivation for damage is, however, unknown.
Abbott +120 more
core +1 more source
Evaluating the origin and spread of spotted lanternfly (Lycorma delicatula) in Japan
Population Ecology, EarlyView.The invasive spotted lanternfly (Lycorma delicatula) is native to China and is a serious economic pest in the Republic of Korea and the United States, though it is not considered a pest in Japan. We established a distribution map of L. delicatula in Japan through a comprehensive review of published literature and citizen science reports and analyzed ...
Matthew T. Kamiyama +5 more
wiley +1 more source
An Age-dependent Feedback Control Model for Calcium and Reactive Oxygen Species in Yeast Cells [PDF]
arXiv, 2022 Calcium and reactive oxygen species (ROS) interact with each other and play an important role in cell signaling networks. Based on the existing mathematical models, we develop an age-dependent feedback control model to simulate the interaction. The model consists of three subsystems: cytosolic calcium dynamics, ROS generation from the respiratory chain
arxiv