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Articles Related to Calcium

A Study Discovered the Role of Carbon Dioxide in the Pathogenesis of Autoimmune Disorders

The incidence of autoimmune disorders has increased with the rise in carbon dioxide since last century. Objective: To determine whether CO2 is associated with autoimmune disorders. Design: Case-control study at local tertiary hospitals in Egypt. Method: A total of 150 patients with various autoimmune disorders, and 75 controls were aged 20 to 70 years. The exclu sion criteria were neuromuscular disorder, critical, respiratory illness, and exposure to CO2, guided by the criteria of the National Institute for Occupational Safety. Patients recruited from November 2023 to March 2024, matched by age, sex, and other demographic variables. All participants were tested for blood gases. Certain cases were further tested to confirm the autoimmune status. Pa CO2 analysis performed using two methods of statistical significance to validate data. Results: Pa CO2 (Mean ± SD) was (48.18 ± 12.10) in autoimmune cases, compared to (42.63 ± 11.06) in control (p= 0.001), number (%) of cases with ↑PaCO2= 97(64.7%) for cases, and 30(40%) for control (RR=1.6167). OR (95% CI) = 2.7453 (1.552 to 4.857), p=0.0005
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Investigation of the Characteristics and Performance of Compatibilized PLA/P CL Blends and Their Nanocomposites with Nanocalcium Carbonate

In this research, (Poly lactic acid)(PLA)/Poly(ε-caprolactone)(PCL) blends containing 2 and 3 phr glycidyl methacrylate (G MA) as a chain extender, and nanocomposites of compatibilized and uncompatibilized PLA/PCL containing 7 and 9 phr nanocalcium carbonate (NCC) were prepared via melt mixing. The crystallinity, tensile properties, morphology, permeabili ty and rheology of the samples were investigated. The results showed that using 25 wt. % of PCL leads to optimum proper ties of PLA/PCL blends. The crystallinity of this sample was increased from 5 (for neat PLA) to 27% in the sample contain ing both GMA and NCC. In addition, the elongation at break of the compatibilized blend is improved up to 180% in com parison to neat PLA. The result showed that the barrier properties of PLA/PCL blends were increased by the crystallinity en hancement of PLA and the intrinsic low permeability of PCL. It was found that the addition of 9 phr NCC to this sample promotes crystallinity and barrier properties, but causes lower tensile properties of blends. Finally, the use of NCC and GMA simultaneously results in lower crystallinity and barrier properties, which could be due to the phase separation of com ponents in the blends. The barrier properties of some samples like compatibilized nanocomposite in composition of 9 phr NCC are closer to PE and PP and thus suitable for replacing of oil based polymers
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Studying the Infrared Spectroscopy and Structural Properties of Compounds Fluoride that Blotched by in

In doped calcium fluoride transparent conducting powder were prepared by solid-state reaction method. Structural properties of the samples were investigated as a function of various In-doping levels (x=0.00-0.01-0.02-0.03). The results of x-ray diffraction have shown that the samples are polycrystalline structure in cubic phase and show presence (111), (220), (311), (400) planes in pure CaF2 sample and the preferred orientation is (220) for pure CaF2 and we have peaks correspond (101), (112), (200), (202) for In for all samples and the preferred orientation is (112) for In for all samples. The average of crystallite size is within the range [2.976-0.845nm] for all samples. The relative intensities, distance between crystalline planes (d), crystallite size (D) and lattice parameters (a) were determined. Measuring the infrared spectrum of pure Calcium fluoride, it is found that there are six vibratory frequencies, namely: (3444.52 - 1517.59 - 1138.40 - 876.40 - 639.93 - 436.29) cm- 1 and six vibratory frequencies for indium doped calcium fluoride at 3wt%. (3441.94 - 1516.77 - 1138.44 - 876.55 - 642.09 -436.44) cm- 1 The study showed that the absorbance values, the absorption coefficient, the refractive index and the optical length were in the indium doped sample by 3wt% greater than that of the pure Calcium fluoride compound and are respectively: α=14.163 cm-1 n=1.767.
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The In Vitro Evaluation of Calcium and Bioactive Glass Based Pulp Capping Materials

Vital pulp preservation in the treatment of deep caries is challenging due to sealing issue. The aim of this study was to compare the physicochemical properties and radiopacity of various light curing pulp capping materials. In this study, SEM-EDS analysis and the radiopacity of four different pulp capping materials including ThereCal LC, Biner LC, Calci Plus LC, and Activa-Bioactive were evaluated. Each material was characterized by scanning electron microscopy (SEM) and chemical composition of each material was analyzed by energy dispersive x-ray spectroscopic (EDS) analysis. The diskshaped specimens (8 mm diameter and 1 mm thickness) were prepared from each material and exposed to a digital x-ray along with an aluminum step wedge for the radiopacity assay. The statistical analysis was performed with ANOVA and Duncan’s post-hoc test.
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Milk Production, Somatic Cell Count, Percentages Milk Fat and Milk Protein Measured in Lactating Dairy Goats Fed a Nutritional Supplement

Two replicate studies were conducted on a commercial goat dairy. The objective was to determine the effects of dietary supplementation with OmniGen-AF, a nutritional supplement that supports immune function in ruminants, on milk production, somatic cell count (SCC), percentages milk fat (%MF) and milk protein (%MP) in lactating dairy goats.
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The Prevalence of Obesity among Subjects with Chronic Kidney Disease – Cross Sectional Study of Sri Lanka Population

The burden of chronic kidney disease (CKD) is growing rapidly around the world, particularly in Asia. Over the last two decades Sri Lanka has experienced an epidemic of CKD, especially in the “Mahaweli” river basin in North Central region of the island that was not attributable to conventional risk factors - hence widely termed “CKD-unknown”.
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Predictors of Stress Fracture Susceptibility in Arab Female Military Recruits during Combat Training: A Preliminary Study

Military recruits and athletes regularly engaging in vigorous physical activities are at increased risk for sustaining lower limb overuse injuries.
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Treatment of Dentin Hypersensitivity: A Systematic Review of Randomized Clinical Trials

Dentin hypersensitivity (DH) is generally described as “a brief, sharp, and acute pain emanating from exposed dentin in response to thermal, tactile, osmotic, or chemical stimuli, as well as exposure to air that cannot be attributed to any dental anomaly or pathology”.
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Bioequivalence Study of Two Oral-Capsule Formulations of Pregabalin 300 mg in Healthy Mexican Adult Volunteers

Pregabalin is a ligand for the alpha-2-delta subunit of voltage-gated calcium channels in the central nervous system. It has anticonvulsant, analgesic, and anxiolytic activity. The bioequivalence of a test formulation was evaluated with respect to its corresponding reference drug formulation of oral pregabalin 300 mg, administered as a capsule. This randomized-sequence, single-dose, single-blind, two-period crossover design under fasting conditions was done on 25 healthy Mexican adult subjects including both genders. There was a seven-day washout period.
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Toxic Effect of Titanium (Tio2) on Wistar Rat (Rattus Norvegicus) Injected by Intravenously

Titanium dioxide (TiO2) (<100 nm) has been widely used in the production of paints, paper, and plastics, as well as in food additives and colorants .It has been classified as biologically inert in both humans and animals. Here we studied the toxicity of TiO2 on Wister rat. Main exposure area of NPs is caudal vein of Wistar rat.
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Helicobacter pylori Infection and its Potential Association with Idiopathic Hypercalciuric Urolithiasis in Pediatric Patients

A total of 150 patients categorized into 100 cases (urolithiasis-positive) with urinary stone disease, aged from 5 to 18 years, and met the characteristics of idiopathic urolithiasis in children as well as 50 controls (urolithiasis-negative) that had relatively similar demographic criteria except for idiopathic urolithiasis.
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Acculturation and Subclinical Atherosclerosis among U.S. South Asians: Findings from the MASALA study

Longer duration of residence among immigrants to the United States, a proxy measure of acculturation, has been associated with higher subclinical atherosclerosis. South Asian immigrants are the second fastest growing immigrant group in the U.S. but little is known about the effects of acculturation with atherosclerosis in this high cardiovascular risk population.
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Nutritional Adequacy of Vegetarian and Omnivore Dietary Intakes

Vegetarian diets are associated with reduced risk for diseases such as diabetes and cardiovascular disease. We aimed to determine the nutritional adequacy of usual food intake in a cohort of young vegetarians and omnivores who regularly exercise.
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Feasibility Analysis of Autogenous Tooth-based Bone Graft Material after Guided Bone Regeneration Technique

We set out to determine the possibility of radiographically evaluating the degree of marginal bone loss in humans after functional loading of implants at sites of guided bone regeneration (GBR) with autogenous tooth-based bone graft (ATBBG) material (AutoBT®, Korea Tooth Bank, Seoul, Korea).
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Pharmacy Compounding Quality Control and Pharmaceutical Development Strategies for Seventeen alpha Hydroxyprogesterone Caproate in Prevention of Preterm Delivery

Seventeen alpha hydroxyprogesterone caproate (17-OHPC) is the only FDA-approved drug labeled for prevention of preterm delivery. This drug is also available as a compounded product from licensed compounding pharmacies. This article reviews the FDA approval history and pharmacy compounding quality control data of 17-OHPC, as well as briefly discusses possible future pharmaceutical development strategies for 17-OHPC.
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Editorial Board Members Related to Calcium

Laurel M Wentz

Assistant Professor
Department of Nutrition Science
East Carolina University
United States

Eric Fung

Professor of Pharmacology
Department of Oral Biology
University of Nebraska Medical Center College of Dentistry
United States

ZONG JIE CUI

Professor
Institute of Cell Biology
Beijing Normal University
China
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