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相关概念视频

Introduction to Urinary System01:13

Introduction to Urinary System

2.5K
The urinary system consists of two kidneys, two ureters, the urinary bladder, and the urethra.
The kidneys are bean-shaped organs located in the retroperitoneal space, on either side of the vertebral column, between the T12 and L3 vertebrae. They are partially protected by the rib cage and surrounded by perirenal fat, which provides cushioning. They are responsible for urine formation and play critical roles in regulating blood pressure, electrolyte levels, and hormone production. The ureters...
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Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

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Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
90
One-Compartment Open Model: Urinary Excretion Data and Determination of k01:11

One-Compartment Open Model: Urinary Excretion Data and Determination of k

172
The one-compartment open model leverages urinary excretion data to estimate renal clearance, which gauges the kidney's capacity to expel a drug. This method offers several benefits, including directly measuring drug elimination and assessing the kidney's contribution to overall drug clearance. However, this approach has limitations. It assumes sole renal excretion of the drug, which is not true for all drugs. Accurate urinary excretion and plasma drug concentration measurement can also...
172
Factors Affecting Renal Clearance: Drug's Physicochemical Properties and Plasma Levels01:31

Factors Affecting Renal Clearance: Drug's Physicochemical Properties and Plasma Levels

212
Renal clearance of a drug is influenced by various factors, including its physicochemical properties and plasma levels. These factors play a significant role in determining how efficiently the kidneys eliminate a drug.
One important factor is the drug's molecular size. The kidneys readily excrete smaller molecules below 300 Daltons (Da). On the other hand, molecules weighing between 300 and 500 Da are excreted through both urine and bile. Larger molecules above 500 Da tend to be excreted...
212
Study Designs in Epidemiology01:20

Study Designs in Epidemiology

215
Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
215
Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

85
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
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相关实验视频

Updated: Jun 26, 2025

5/6 Nephrectomy Using Sharp Bipolectomy Via Midline Laparotomy in Rats
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基础代谢率和功能之间的因果关系:双向的双样本孟德尔随机化研究.

Chaomin Zhou1,2, Yanzhe Peng2, Lin Zhan3

  • 1National Health Commission (NHC) Key Laboratory of Pulmonary Immune-related Diseases, Renal Division, Department of Nephrology, Guizhou Provincial People's Hospital, Guiyang, China.

Frontiers in endocrinology
|May 10, 2024
PubMed
概括

较高的基础代谢率 (BMR) 与功能受损和慢性病 (CKD) 风险增加有关. 相反,降低功能 (eGFR) 与更高的BMR有关,这表明双向关系.

关键词:
基本代谢率基本代谢率这是双向的双向.这种因果关系是因果关系.功能 功能 功能两个样本的门德尔随机化分析分析.

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Estimation of Nephron Number in Whole Kidney using the Acid Maceration Method
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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
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科学领域:

  • 遗传学 是一个遗传学.
  • 腎臟病學 (nephrology) 是一種醫學專業.
  • 代谢生理学 代谢生理学

背景情况:

  • 基础代谢率 (BMR) 和慢性病 (CKD) 之间的联系尚未得到充分理解.
  • 研究BMR和功能之间的因果关系至关重要.

研究的目的:

  • 为了确定BMR是否因果影响损伤.
  • 检查功能变化是否因果影响BMR.

主要方法:

  • 一个双样本的门德尔随机化 (MR) 研究,使用来自大型全基因组关联研究 (GWAS) 的遗传数据.
  • 在欧洲人群中分析了BMR,估计的淋巴细胞过率 (eGFR),CKD和血液尿素 (BUN).
  • 采用逆方差加权 (IVW) 方法和灵敏度分析,包括反向MR.

主要成果:

  • 基因预测较高的BMR与较低的eGFR (β=-0.032,P=4.95*10-12),以及增加的CKD风险 (OR=1.36,P=0.003) 有关.
  • 反向MR显示较低的eGFR与更高的BMR相关 (β=-0.64,P=2.32*10-6).
  • 在BMR和BUN之间没有发现因果关系.

结论:

  • 升高的BMR对功能受损和更高的CKD风险具有因果关系.
  • 降低功能 (eGFR) 与增加的BMR有因果关系,表明双向关系.