関連する実験動画
Updated: Sep 9, 2025
07:56
Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
Published on: January 29, 2018
17.7K
骨の健康は,出生前感染したHIV-1を患っている英国の若者のコホートで,縦断的な研究
Merle Henderson1,2, Alexandra Blenkinsop3, Oliver Ratmann3
1Department of Infectious Diseases, Imperial College London, London, UK.
Journal of the International AIDS Society
|September 4, 2025
まとめ
骨のミネラル密度 (BMD) の蓄積は,生後感染したHIV (PHIV) の若い個体では予想より低かった. 骨の健康に関する結果は,他の治療法と比較して,テノフォビルアラフェナミド (TAF) ARTに切り替えられた患者と類似した.
科学分野:
- 骨の健康 研究
- HIV/AIDS 臨床研究
- 小児内分泌学
背景:
- 骨のミネラル密度 (BMD) の低下は,伝統的およびHIV関連因子による,生前感染性HIV (PHIV) の懸念事項である.
- 若いPHIVコホートにおけるBMDの軌道を理解することは,長期的な健康にとって極めて重要です.
- 抗レトロウイルス療法 (ART) は,PHIV患者の骨の健康に影響を与える可能性があります.
研究 の 目的:
- 骨のミネラル密度 (BMD) を評価するために,イギリスで,生前感染したHIV (PHIV) を患った若者のコホート.
- 年齢と抗レトロウイルス治療 (ART) が BMD 累積に与える影響を評価する.
- テノフォビル・ディゾプロキシル・フーマレート (TDF) からテノフォビル・アラフェナミド (TAF) ARTに切り替えられた個体におけるBMDの累積を比較する.
主な方法:
- 15~25歳以上のPHIV患者130人を対象とした長期観察研究.
- 二重エネルギーX線吸収測定とバイオマーカー分析による骨の健康評価
- 低BMDとART効果の予測要因を特定するために使用されるベイジアンロジスティック回帰.
主要な成果:
- 発症時のBMDは低かったが,15~19歳の患者では予想より低かった.
- BMDとHIVのパラメータ,またはART療法の間に有意な関連性が見つかりませんでした.
- TAF-ARTによるBMDの蓄積は,TAF/TDF-ART以外の治療法よりも劣らなかった.
結論:
- 低BMD率は低かったが,若いPHIV患者ではBMDの蓄積が減少した.
- TAF-ARTによるBMDの累積は,他の非TDFARTの骨盤と比較可能であった.
- 若いPHIV集団の骨の健康状態の継続的なモニタリングは正当化されています.
さらに関連する動画
05:53Measuring Frailty in HIV-infected Individuals. Identification of Frail Patients is the First Step to Amelioration and Reversal of Frailty
Published on: July 24, 2013
16.7K
04:24Proper Positioning and Restraint of a Rat Hind Limb for Focused High Resolution Imaging of Bone Micro-architecture Using In Vivo Micro-computed Tomography
Published on: November 22, 2017
10.0K
関連する概念動画
01:29Bone Disorders
3.9K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
3.9K
01:25Role of Vitamins in Maintaining Bone Health
3.6K
The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
3.6K
01:09Changes in the Appendicular Skeleton with Age
2.2K
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
2.2K
01:27Compact Bone
12.6K
Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
12.6K
01:17Hormones and Bone Tissue
2.9K
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
2.9K
01:31Essential Minerals for Bone Health
4.4K
The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
4.4K