Intracellular mineralization of Bacterionema matruchotii

Intracellular calcium phosphate mineral formation in Bacterionema matruchotii has been examined relative to two established points: the product of calcium and phosphorus levels at which spontaneous precipitation occurs (Ca × P), 50 (mg %)2, and the product at which calcium hydroxyapatite itself induces crystal growth, 35 (mg %)2. The extent of intracellular mineralization in the defined calcifying medium was determined analytically after washing the cells. Electron micrographs of B. matruchotii cells revealed needlelike crystals of mineral, typical of calcium hydroxyapatite. Bacterionema matruchotii was found to be an efficient nucleator and can bring about the formation of solid phase at a Ca × P product as low as 35 (mg %)2.

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Precipitation SELEX: identification of DNA aptamers for calcium phosphate materials synthesis

Chemical Communications ◽

10.1039/c6cc08687j ◽

2017 ◽

Vol 53 (6) ◽

pp. 1092-1095 ◽

Cited By ~ 9

Author(s):

K. R. Baillargeon ◽

K. Meserve ◽

S. Faulkner ◽

S. Watson ◽

H. Butts ◽

...

Keyword(s):

Calcium Phosphate ◽

Dna Aptamers ◽

Mineral Formation ◽

Materials Synthesis ◽

Phosphate Mineral

DNA aptamers that enhance calcium phosphate mineral formation were identified using a novel precipitation SELEX method.

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Serum calcium and phosphorus levels: a marker of disease activity in senile cataract patients

International Journal of Advances in Medicine ◽

10.18203/2349-3933.ijam20181071 ◽

2018 ◽

Vol 5 (2) ◽

pp. 371

Author(s):

Smita A. Deokar ◽

Pooja S. K. Rai ◽

Anita B. Rai ◽

. Sudarshan ◽

Shimi Sundharan ◽

...

Keyword(s):

Intracellular Calcium ◽

Serum Calcium ◽

Serum Levels ◽

Senile Cataract ◽

Control Group ◽

Phosphorus Concentration ◽

Age Related ◽

Calcium And Phosphorus ◽

Cataract Patients ◽

Phosphorus Levels

Background: The present study was aimed to study alterations in serum levels of calcium and phosphorus levels in senile cataract patients.Methods: 25 senile cataract patients in age group of 50 to 80 years and 25 control group were included in the study. Serum Calcium and Phosphorus levels were determined by Orthocresolphthalein, Fiske SubbaRow method respectivelyResults: Significantly increased levels of serum calcium in cataract patients (11.58±1.65 mg/dl) were found as compared to controls (8.53±1.45mg/dl) (p<0.0001). Serum phosphorus concentration in cataract patients (5.28±0.46 mg/dl) were significantly increased when compared to controls (3.02±1.23mg/dl) (p<0.0001).Conclusions: Presence of G-protein receptors in lens leads to the release of intracellular calcium. As total calcium in the lens increases, we hypothesize that higher intercellular calcium concentrations, coupled with decreased Ca2+-ATPase activity and greater membrane permeability could lead to elevated free intracellular calcium levels causing cataract. So, abnormal elevation of serum calcium and phosphorus can be used as a marker for prevention of age-related human cataract.

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Особенности взаимодействия гидроксиапатита кальция и углеродных нанотрубок при осаждении из водных растворов

Письма в журнал технической физики ◽

10.21883/pjtf.2019.14.48015.17816 ◽

2019 ◽

Vol 45 (14) ◽

pp. 13

Author(s):

Н.А. Захаров ◽

Е.В. Шелехов ◽

В.В. Матвеев ◽

А.Д. Алиев ◽

Е.М. Коваль

Keyword(s):

Carbon Nanotubes ◽

Composite Materials ◽

Calcium Phosphate ◽

Multiwalled Carbon Nanotubes ◽

Calcium Hydroxyapatite ◽

Water Systems ◽

Multiwalled Carbon ◽

Phosphate Mineralization ◽

Calcium And Phosphorus

The composite materials (CM) on the base of nanocrystalline (NC) calcium hydroxyapatite Са10(РО4)6(ОН)2 (HА) (NCHА) and multiwalled carbon nanotubes (CNT), that contain 0.1; 1 и 5 w. % of CNT, in of cooperative precipitation of calcium and phosphorus salts and CNT in water systems of compositions Ca(OH)2–H3PO4–H2O–CNT produced. The influence on size, morphology and solubility of NCHA in CM HA/CNT composition, that of CNT influence on calcium phosphate mineralization simulate, were defined.

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