相关实验视频
Updated: Feb 4, 2026

06:24
Minimal Erythema Dose MED Testing
Published on: May 28, 2013
42.8K
皮质红斑 (Erythema Gyratum) 在没有相关新生体的情况下复发:一种类风湿性扭曲
Jebisha Joseph Bella1, Sudha Rangarajan1, Divya Raviprakash1
1Dermatology, Venereology and Leprosy, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND.
Cureus
|February 3, 2026
概括
红斑旋转回复 (EGR),一种具有木质粒状图案的皮肤状况,通常与癌症有关,但可以在没有癌症的情况下发生. 这一案例突出显示了与类风湿性关节炎相关的EGR,显示了非新发性背景.
科学领域:
- 皮肤病学 皮肤病学
- 类风湿病学 类风湿病学
- 在瘤学瘤学.
背景情况:
- 红斑回 (Erythema gyratum repens,简称EGR) 呈现为环状的红斑状斑块,带有同心环,类似于木.
- 传统上被认为是神经瘤标记物,EGR在非神经瘤条件下越来越多地报告.
- 由于新出现的非神经瘤病例,EGR与潜在恶性瘤之间的关联正在重新评估.
研究的目的:
- 为了呈现一种与类风湿性关节炎 (RA) 相关的Erythema gyratum repens (EGR) 的病例.
- 为了突出 EGR 在非新生体环境中的发生.
- 为了解EGR除恶性瘤之外的各种病因有所贡献.
主要方法:
- 案例报告的呈现方式.
- 临床和皮肤镜检查患者.
- 关于EGR和类风湿性关节炎的相关医学文献的综述.
主要成果:
- 一名患者呈现出与Erythema gyratum repens.一致的临床特征.
- 这名患者被诊断患有类风湿性关节炎.
- 没有发现潜在恶性瘤的证据,证实了非新发性关联.
结论:
- 红斑旋转复发可以发生在诸如类风湿性关节炎等自身免疫性疾病的背景下.
- 由于EGR不仅仅是一种神经瘤综合征,因此应对非神经瘤原因进行调查.
- 这一案例强调了在EGR的差异诊断中考虑类风湿病的重要性.
相关概念视频
Angle of Twist: Problem Solving
794
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the torque...
794
Angle of Twist - Elastic Range
808
Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
808
DNA Topoisomerases
35.5K
Topoisomerases are enzymes that relax overwound DNA molecules during various cell processes, including DNA replication and transcription. These enzymes regulate positive and negative DNA supercoiling without changing the nucleotide sequence. DNA overwinding in a clockwise direction results in positively supercoiled DNA, whereas underwinding in a counterclockwise direction produces negatively supercoiled DNA.
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
35.5K
DNA as a Genetic Template
27.8K
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
27.8K
DNA Base Pairing
33.2K
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
33.2K

