长期吸烟者皮肤血管和神经变化的光学连贯性断层扫描和组织学评估:一项探索性研究
Abigail E Doyle1, Payal M Patel2, Sarina B Elmariah3
1Cutaneous Biology Research Center, Massachusetts General Hospital, Boston, MA, 02129, USA. aedoyyle@gmail.com.
Scientific reports
|January 24, 2026
概括
吸烟显著降低了前臂微血管密度,特别是在老年女性中,这表明加快了衰老. 吸烟史,而不仅仅是年龄,与这些血管变化有很强的相关性.
科学领域:
- 血管生物学 血管生物学
- 皮肤病学 皮肤病学
- 老年学是一门学科.
背景情况:
- 吸烟会损害内皮细胞,损害微循环和血液流动.
- 血管疾病与糖尿病神经病变和神经纤维密度降低有关.
- 光学连贯断层扫描血管造影 (OCT-A) 是为了研究尼古丁对血管的影响而建立的.
研究的目的:
- 用OCT-A (RH-OCT-A) 检查女性吸烟者和非吸烟者的微血管变化.
- 为了比较前臂血管密度和皮内神经纤维密度 (IENF) 跨年龄组和吸烟状态.
- 评估吸烟史 (包装年) 和血管变化之间的相关性.
主要方法:
- 使用RH-OCT-A可视化前臂微血管在年轻和老年女性吸烟者和非吸烟者.
- 皮内神经纤维密度 (IENF) 在可比群体中得到量化.
- 统计分析将船舶密度与年龄和包装年历史相关联.
主要成果:
- 观察到血管密度下降的趋势:老年吸烟者 (15.7%) <老年非吸烟者 (16.4%) <年轻吸烟者 (18.8%) <年轻非吸烟者 (18.9%).
- 在吸烟者中,吸烟史 (包装年) 与血管密度 (R = -0.53) 相比,与年龄 (R = -0.42) 的负相关性更强.
- 在这个队列中,吸烟者和非吸烟者之间在IENF中没有发现显著差异.
结论:
- 吸烟史与前臂微血管密度降低有显著关联.
- RH-OCT-A显示,吸烟加速了血管衰老,而不依赖于时间的年龄.
- 研究结果表明,吸烟对微循环有不利影响,可能导致与年龄相关的血管衰退.
相关概念视频
Imaging Studies III: Computed Tomography
323
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
323
Long-term Depression
33.2K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
33.2K
Imaging Studies II: Positron Emission Tomography and Scintigraphy
533
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET
533
Stomach Histology
3.0K
The stomach comprises several layers that work together to facilitate digestion and protect the organ. The outermost layer is called the serosa, which provides support and protection to the stomach. The muscularis externa layer is responsible for the mechanical breakdown of food by contracting and moving the stomach. The submucosa layer, located beneath the muscularis externa, contains connective tissue, blood vessels, nerves, and glands that secrete mucus and other substances essential for...
3.0K
Liver Histology
4.2K
The microscopic anatomy of the liver is a complex and intricate system that comprises numerous structural units known as liver lobules, each of which is comparable in size to a sesame seed. These hexagonal structures consist of plates of liver cells or hepatocytes, which are characterized by their versatility and abundance of cellular apparatus like rough and smooth ER, Golgi apparatus, peroxisomes, and mitochondria.
Hepatocytes perform a variety of essential functions. They secrete...
Hepatocytes perform a variety of essential functions. They secrete...
4.2K
Histology of the Large Intestine
3.0K
The large intestine, a vital component of the gastrointestinal tract, is structured with four main layers: the mucosa, submucosa, muscularis, and serosa. Each layer performs a distinct role in facilitating the smooth functioning of the large intestine.
The innermost mucosa layer comprises simple columnar epithelium, lamina propria, and muscularis mucosae. This layer is primarily populated with absorptive cells, tasked with water absorption, and goblet cells, responsible for secreting mucus to...
The innermost mucosa layer comprises simple columnar epithelium, lamina propria, and muscularis mucosae. This layer is primarily populated with absorptive cells, tasked with water absorption, and goblet cells, responsible for secreting mucus to...
3.0K


