相关实验视频
Updated: Jul 25, 2025

13:04
A Protocol for Analyzing Hepatitis C Virus Replication
Published on: June 26, 2014
24.2K
肝炎C病毒清除级联 - 美国,2013-2022年
MMWR. Morbidity and mortality weekly report
|June 29, 2023
概括
尽管有有效的治疗方法,但C型肝炎病毒 (HCV) 清除率仍然很低. 这项研究追踪了HCV级联,发现只有三分之一的感染者实现了病毒清除,突出了诊断和治疗准入方面的差距.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 传染性疾病 传染性疾病
- 公共卫生 公共卫生
背景情况:
- 型肝炎病毒 (HCV) 感染影响了数百万人,可能导致严重的肝病和癌症.
- 到2030年,国家目标是≥80%的病毒清除,因此需要对患者的旅程进行监测.
- 自2013年以来,高效的直接作用抗病毒药物 (DAA) 已可用.
研究的目的:
- 开发和应用一个简化的,基于实验室的,五步全国性HCV清除级联.
- 分析患者从最初感染到病毒清除或持续感染的进展情况.
- 自DAA出现以来,识别HCV护理级联中的差距.
主要方法:
- 利用来自大型国家商业实验室的纵向数据 (2013年1月至2021年12月).
- 根据实验室结果定义了一个五步的HCV清除级联.
- 分析了1,719,493个有HCV感染史的人.
主要成果:
- 从2013年到2022年,88%的感染者接受了病毒检测.
- 在接受测试的人群中,69%的人初次感染,34%的人实现了病毒清除.
- 只有7%的初始感染者患有持续性感染或再感染;大约三分之一的人获得了清除.
结论:
- 在实现型肝炎的病毒清除方面存在很大的差距,即使使用有效的DAA.
- 简化级联强调了改善诊断,治疗和预防的必要性.
- 解决这些差距对于实现国家HCV消除目标和减少传播至关重要.
相关概念视频
Hepatic Drug Clearance: Restrictive and Nonrestrictive Clearance
153
Hepatic clearance refers to the volume of blood cleared of a drug by the liver per unit of time. It plays a crucial role in drug metabolism and elimination. While hepatic clearance is commonly estimated by subtracting renal clearance from total body clearance, other pathways, such as pulmonary or biliary clearance, may also contribute. However, these pathways are generally less significant than hepatic and renal clearance.
Most drugs undergo restrictive clearance, which is proportional to the...
Most drugs undergo restrictive clearance, which is proportional to the...
153
Retrovirus Life Cycles
46.2K
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
46.2K
Hepatic Drug Clearance: Role of Transporters
87
In the liver and bile canaliculi, influx and efflux transporters modification can influence intrinsic clearance. Transporters play a significant role in moving drugs within liver cells. Elaborate models, such as the Biopharmaceutical Classification System (BCS), are essential to relate transporters to drug disposition. This system categorizes drugs into four classes based on solubility and permeability, providing insights into elimination routes and the effects of transporters following oral...
87
Hepatic Drug Excretion: Influencing Factors
162
The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
162
Hepatic Drug Excretion: Enterohepatic Cycling
1.6K
Enterohepatic cycling involves the active secretion of drugs and their metabolites into the bile via transporters in the canalicular membrane of hepatocytes. This secretion is an integral part of the digestive process, releasing these substances into the gastrointestinal (GI) tract.
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
1.6K

