Electron microprobe investigation of calcium and phosphorus concentration in human bone trabeculae—Both normal and in posttraumatic osteopenia

1985 ◽  
Vol 37 (2) ◽  
pp. 117-120 ◽  
Author(s):  
Karl J. Obrant ◽  
Rolf Odselius
Keyword(s):  
Electron Microprobe ◽  
Human Bone ◽  
Phosphorus Concentration ◽  
Calcium And Phosphorus ◽  
Bone Trabeculae ◽  
Posttraumatic Osteopenia

Electron Microprobe Analyses of the Remineralization of Enamel

1970 ◽  
Vol 49 (3) ◽  
pp. 621-625 ◽  
Author(s):  
Stephen H.Y. Wei
Keyword(s):  
Acetic Acid ◽  
Electron Microprobe ◽  
Potassium Acetate ◽  
Enamel Surface ◽  
Acetate Buffer ◽  
Demineralized Enamel ◽  
Calcium And Phosphorus

The electron microprobe was used to analyze the calcium and phosphorus concentrations of sound, acid-etched, and remineralized enamel. By use of a weak acetic acid-potassium acetate buffer, it was found that the demineralization probably affected only the first 10 micrometers of the enamel surface. This demineralized enamel was successfully remineralized by the use of a calcifying solution. The changes in calcium and phosphorus concentrations and the Ca/P ratios were determined.

Quality characteristics and hatchability of eggs and serum electrolytes concentration of Gola, Giribaz and Ghiachundi pigeon breed

2021 ◽  
Vol 7 (2) ◽  
pp. 107-112
Author(s):  
Khaled Mahmud Sujan ◽  
Manik Biswas ◽  
Sakhawat Hossain Tareq ◽  
Md Kamrul Islam
Keyword(s):  
Body Weight ◽  
Serum Sodium ◽  
Analytical Techniques ◽  
The Body ◽  
Phosphorus Concentration ◽  
Serum Electrolytes ◽  
Final Body Weight ◽  
Sodium Potassium ◽  
Crop Fields ◽  
Calcium And Phosphorus

The weather and vast areas of crop fields along with housing premises of Bangladesh are suitable for pigeon farming. The experiment was conducted to evaluate the characteristics of eggs and serum electrolyte concentration of Gola, Giribaz and Ghiachundi pigeon squabs. Three pairs of each breed were reared in the cage with commercial feed and water. After laying eggs, the length and width of eggs were recorded. After hatching of eggs, eggshell thickness was recorded. The thickness of the eggshell was 0.15±0.01 mm, 0.15±0.01 mm, 0.15±0.00 mm for Gola, Giribaz and Ghiachundi breeds respectively. The body weights of the squabs were recorded at 7th and 45th day. The squabs were sacrificed on 45th day and the blood sample was collected and serum sodium, potassium, calcium and phosphorus concentration were measured by using appropriate analytical techniques. Serum sodium, potassium, calcium and phosphorus were: 102.93±15.95 (mmol/L), 11.18±2.19 (mmol/L), 6.20±1.11 (mmol/L), 4.53±0.45 (mmol/L) for Gola breed; 101.48±2.12 (mmol/L), 12.15±0.96 (mmol/L), 5.65±1.09 (mmol/L), 4.53±0.36 (mmol/L) for Giribaz breed and 95.18±6.71 (mmol/L), 11.99±0.91 (mmol/L), 5.09±0.75(mmol/L), 4.81±0.24 (mmol/L) for Ghiachundi breed respectively. A positive correlation has been found between thickness of eggshell and phosphorus while there is a negative correlation with calcium for Gola breed; both have been found insignificant for Giribaz breed and only calcium has been found significant for Ghiachundi breed. A strong correlation between the final body weight of the squab and K for the Gola breed; between the final body weight of the squab and Ca, P, K for Giribaz breed and between the final body weight of the squab and Ca, Na, K have been found. It could be concluded that serum electrolytes having an influential effect on egg characteristics and body weight of corresponding pigeon breed. Asian J. Med. Biol. Res. 2021, 7 (2), 107-112

The metabolism of phosphorus and calcium in sheep during intravenous infusion of phosphorus

1982 ◽  
Vol 33 (5) ◽  
pp. 827 ◽  
Author(s):  
KM Schneider ◽  
RC Boston ◽  
DD Leaver
Keyword(s):  
Soft Tissue ◽  
Control Period ◽  
Compartmental Analysis ◽  
Phosphorus Concentration ◽  
Hormonal Changes ◽  
Deconvolution Analysis ◽  
Tracer Techniques ◽  
Calcium And Phosphorus ◽  
The Difference ◽  
Tissue Accretion

The metabolism of calcium and phosphorus in mature sheep, given firstly a chaff diet and then chaff with an intravenous supplement of 1.5-2.0 g/day of phosphorus, was studied by using tracer techniques and compartmental analysis. Absorption was also studied by deconvolution analysis and a technique relating the excretion of tracer in faeces to that of an insoluble marker. Under the conditions of the experiment most of the additional phosphorus infused intravenously was excreted in the faeces, and this was due to a concurrent increase in the endogenous secretion and a decrease in the efficiency of absorption of phosphorus. In sheep given 2.0 g of phosphorus per day, the phosphorus concentration in plasma increased 2.5-4 times, but the excretion of phosphorus in the urine remained small (less than 0.3 g/day) compared with the excretion of 2.5 g/day of phosphorus in the faeces. One feature of the experiment was the difference in the behaviour of bone and soft tissue reservoirs between the sheep given 1.5 g/day of phosphorus and those given 2.0 g/day. In the former group accretion and resorption of calcium and phosphorus in bone and soft tissue increased when compared with the control period, whereas in the latter group bone and soft tissue accretion of phosphorus was unchanged and resorption increased slightly. These results are discussed in terms of the hormonal changes that occur following changes in plasma calcium and phosphorus.

Effect of 1 α-hydroxycholecalciferol on calcium and phosphorus concentration in goat milk

1996 ◽  
Vol 21 (1) ◽  
pp. 45-49
Author(s):  
M.Ben Goumi ◽  
M.-J. Davicco ◽  
V. Coxam ◽  
F. De La Farge ◽  
J.-P. Barlet
Keyword(s):  
Goat Milk ◽  
Phosphorus Concentration ◽  
Calcium And Phosphorus

The influence of dietary calcium and phosphorus concentration on their absorption in the cow

1967 ◽  
Vol 68 (2) ◽  
pp. 263-268 ◽  
Author(s):  
R. Manston
Keyword(s):  
Dietary Intake ◽  
Dietary Calcium ◽  
Phosphorus Concentration ◽  
Isotope Techniques ◽  
Phosphorus Absorption ◽  
Calcium And Phosphorus

Experiments were carried out in dry, nonpregnant cows by varying dietary concentrations of calcium and phosphorus. Calcium and phosphorus absorption were measured by balance and isotope techniques. It was found that absorption of calcium or phosphorus increased when the dietary intake of the element increased, but only for a few days.

scholarly journals Serum calcium and phosphorus concentration and alkaline phosphatase activity in healthy children during growth and development

2008 ◽  
Vol 61 (7-8) ◽  
pp. 393-399 ◽  
Author(s):  
Ljiljana Savic ◽  
Dejan Savic
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Serum Calcium ◽  
Alkaline Phosphatase Activity ◽  
Growth And Development ◽  
Age Groups ◽  
Growth Spurt ◽  
Phosphorus Concentration ◽  
Healthy Children ◽  
Calcium And Phosphorus

Introduction. Many changes happen during growth and development in an organism as a result of important hormone changes, especially biohumoral ones. These changes make a problem when interpreting biochemical results in pediatric population. The most important changes are intensive calcium and phosphorus metabolic turnover in bone tissue with changes in alkaline phosphatase activity as a result of osteoblast activity. The aim of this study was to follow the serum calcium and phosphorus concentration and alkaline phosphatase activity in children 1-15 years old in different growth and development period and of different sexes and to fortify the influence of growth and development dynamics on biohumoral status in healthy male and female children. Material and methods. We evaluated 117 healthy children of both sexes from 1-15 years of age and divided them into three age groups: 1-5, 6-10 and 11-15 years. We followed the serum calcium and phosphorus concentration and alkaline phosphatase activity in different groups and in different sexes. Results and conclusion. Our investigation found significantly higher values of serum calcium in boys than in girls with no important changes between the age groups and significantly higher values of serum phosphorus in the youngest age group in all children and in different sexes with no important sex differences. Alkaline phosphatase activity followed the growth spurt and was the biggest in 6-10 years group in girls and in 11-15 years group in boys.

Influence of 1α-hydroxycholecalciferol on calcium and phosphorus concentration in camel milk

1994 ◽  
Vol 61 (4) ◽  
pp. 567-571 ◽  
Author(s):  
Fouad Riad ◽  
Mohammed Ben Goumi ◽  
Marie-Jeanne Daviccot ◽  
Abdallah Safwate ◽  
Jean-Pierre Barlet
Keyword(s):  
Camel Milk ◽  
Phosphorus Concentration ◽  
Calcium And Phosphorus

scholarly journals Vitamin D in the prevention and treatment of periodontal diseases: an integrative review

2021 ◽  
Vol 10 (13) ◽  
pp. e25101320738
Author(s):  
Marlon Mezadri Layber ◽  
Alyne Barreto Mesquita de Goés ◽  
Camila Vilar de Oliveira Villarim ◽  
Diego Maia Diógenes Rabelo Caldas ◽  
Irami Araújo-Neto ◽  
...  
Keyword(s):  
Vitamin D ◽  
Photochemical Reaction ◽  
Active Metabolite ◽  
Web Of Science ◽  
Periodontal Diseases ◽  
Phosphorus Concentration ◽  
Mineral Density ◽  
Prevention And Treatment ◽  
The Subject ◽  
Calcium And Phosphorus

Introduction: Vitamin D is synthesized from 7-dehydrocholesterol during a photochemical reaction, under the effect of ultraviolet radiation on the skin, obtained from food. It is hydroxylated in the liver to 25-hydroxyvitamin D3 (25(OH)D3). It is an active metabolite, which maintains the balance of calcium and phosphorus concentration in the blood, in addition to helping bone remodeling. Vitamin D deficiency promotes rickets in children and osteoporosis in adults, with a risk of bone fracture. Vitamin D acts in the pathogenesis of periodontal diseases via immunomodulation, increases mineral density and reduces bone resorption, which is important in combating agents that cause periodontal diseases. Objectives: Evaluate the importance of vitamin D in the prevention and treatment of periodontal diseases. Methods: A search was carried out in the PubMed/Medline, Scopus, Scielo, Embase, Web of Science and Google Scholar databases on scientifically proven evidence on the subject. Results: The present review demonstrated the importance of vitamin D in the prevention and treatment of periodontitis and the consequences of its deficiency on the oral health of patients. Conclusion: Vitamin D plays an important role in oral homeostasis and vitamin deficiency results in periodontal disease.

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

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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