Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Bone and Bones"”.
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Evaluating Bone by Ultrasound
Bone fractures associated with osteoporosis, a major bone disease characterized by low density and high fracture risk, are common causes of disability and large medical care expenses around the world. Considering its low cost, high portability, and non-ionizing nature, non-invasive ultrasound …
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The Physiological Aspects of the Piezoelectric Phenomenon and its Application in Biologic Bone
<p>The relationship between stress and bony architecture has long been recognized, but the actual cellular machanism which causes the alteration is still somewhat vague. Piezoelectric properties and bioelectric potentials have been proposed as partial answers.</p> <p>It is the purpose of this …
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The Piezoelectric Effect of Bone In Vitro
<p>The mechanism of bone deposition and resorption, under stress, is incompletely understood. The direct piezoelectric properties of bone have been suggested as playing an active role in the internal morphology of bone tissue.</p> <p>This study was designed to fabricate an apparatus and develop a …
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The Relationship Between the Osteonal Cement Line and Bone Strength
<p>Bone includes many structural and chemical components which provide both flexibility and strength. One such structure is the cement line, a 1-5 μm-thin structure located primarily in compact bone. Past research has correlated the pathological condition of “shin splints” with the micro-damage of …
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Vanishing Act: Lymphatic Vessels and Disappearing Bones
Generalized lymphatic anomaly (GLA) and Gorham-Stout disease (GSD) are related diseases of the lymphatic system. Patients with GLA or GSD develop ectopic lymphatic vessels in bone and gradually lose bone. Despite growing interest in the development of tissue-specific lymphatics, the cellular origin …
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Digital Microradiography: In Vitro Validation of a Novel Imaging Technique
… considerable limitations of this ageing gold standard such as unavailability of the high-resolution spectroscopic plates and prolonged imaging and processing times. The present study aimed at developing and validating a novel digital microradiographic technique that is not restricted by the …
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Mechanism of Mitogenic Action of Aluminum Ion on Bone Cells : Potential Involvement of the Insulin-Like Growth Factor Regulatory System
… [3H]thymidine incorporation into cell DNA and increased cellular alkaline phosphatase activity (an osteoblastic differentiation marker) in osteoblast-like cells of chicken and human origin. Although biphasic, dose-dependent stimulations were highly reproducible, the maximal stimulatory dose …
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Aerobic Exercise and Bone Turnover in Trained and Untrained Premenopausal Women
… recommended for healthy young adults to optimize bone mineral density (BMD) (Physical Activity Guidelines Advisory Committee, 2008). BMD alone however, is not a significant predictor of osteoporosis or fracture risk. While bone turnover markers are used clinically to assess efficacy of …
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Proto-oncogene Regulation by Growth Factors in Bone Cells
<p>Previous studies have shown that bone cells in culture produce a number of growth factors that are important in bone regulation. Chick and mouse primary calvarial cultures consist of a mixture of cell types that make it difficult to interpret the results from these model systems. In contrast, …
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The Role of Claudins in Bone Metabolism
… problem in the U.S., is characterized by low bone mass and structural deterioration of bone tissue. Since the imbalance between bone formation and bone resorption during bone remodeling has been documented to be a major factor in the pathogenesis of osteoporosis, it is crucial to identify …
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Retinoic Acid Regulation of Thyroid Hormone Action in Bone Cells
<p>Retinoic acid and thyroid hormone are known to play key roles in the regulation of endochondral ossification. However, the issue of whether these two hormones interact with each other to regulate bone functions remains to be established. We investigated how thyroid hormone and retinoic acid …
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The Effects of Dietary N-3 Polyunsaturated Fat from Plant Versus Marine Sources on Bochemical Markers of Bone Turnover in Healthy Adults
… versus marine sources on biochemical markers of bone turnover.</p> <p><strong>Design:</strong> Both studies were controlled, single blind, randomized trials using Latin-square crossover designs.</p> <p><strong>Subjects/Methods:</strong>Twenty-five (12 females and 13 males) and 24 (9 females and …