自体主性多囊性脏病患者所需的水摄入量
Gopala K Rangan1,2,3, Annette T Y Wong1,2, Alexandra Munt1,2
1Michael Stern Laboratory for Polycystic Kidney Disease, Westmead Institute for Medical Research, The University of Sydney, Westmead, New South Wales, Australia.
NEJM evidence
|February 6, 2024
概括
自体主性多囊性病 (ADPKD) 的增加水摄入量并没有减缓囊的生长. 这项为期3年的试验发现,处方饮水组和自由饮水组之间的脏总体积变化没有显著差异.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 遗传学 遗传学 是一个
- 临床试验 临床试验
背景情况:
- 氨酸压缩素有助于 autosomal 主导多囊性病 (ADPKD) 的囊进展.
- 增加水摄入量可以通过降低血管压素水平和尿液度来减轻ADPKD的进展.
研究的目的:
- 为了研究规定的高水摄入量减缓ADPKD患者囊生长的疗效.
- 为了比较处方和任意饮用水对脏总体体积和尿液度的影响.
主要方法:
- 一项为期3年的随机对照试验,涉及184名患有ADPKD的成年人 (梅奥成像子类1B-1E,eGFR≥30毫升/分钟/1.73米2).
- 参与者被分配到规定的水摄入量,以达到尿液度≤270mOsmol/kg或任意饮用水.
- 主要终点:整体体积的年化变化率.
主要成果:
- 在规定的 (6.8%/年) 和随意 (7.8%/年) 水摄入组之间,总体体积的年增长率没有显著差异.
- 在52.3%的患者中,处方饮用水达到目标尿液度,但没有降低血清可佩水平.
- 在为期3年的研究期间,两组的不良事件频率在两组之间是相似的.
结论:
- 在ADPKD患者处方高水摄入量并没有显著减缓脏总体积的增长,而不是在3年内随意摄入.
- 虽然在一半的参与者中实现了目标尿性,但干预措施并没有降低血清可佩.
- 规定的饮用水的策略是安全的,但在改变ADPKD进展方面并不有效,这是通过脏总体积增长来衡量的.
相关概念视频
Formation of Dilute Urine
1.6K
The formation of dilute urine is a critical renal adaptation that maintains fluid balance, particularly during periods of high fluid intake. This process primarily involves the juxtamedullary nephrons. By adjusting the permeability of water and ions in response to physiological conditions, the kidneys can either conserve or excrete water, resulting in concentrated or dilute urine.
Filtrate Osmolarity in the PCT
Initially, as the filtrate passes through the proximal convoluted tubule (PCT), its...
Filtrate Osmolarity in the PCT
Initially, as the filtrate passes through the proximal convoluted tubule (PCT), its...
1.6K
Regulation of Water Output
295
The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...
295
Renal Tubule and Collecting Duct
986
The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
986
Regulation of Water Intake
506
Osmolality refers to the number of solute particles per kilogram of solvent in a solution. Plasma osmolality specifically indicates the total number of solute particles per kilogram of water in blood plasma. This value reflects the body's hydration status and is tightly regulated through mechanisms controlling water intake and output. While water consumption is a conscious decision, the body has intrinsic regulatory systems to maintain fluid balance. Dehydration, a state of water deficit...
506
Nephrons
2.4K
The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
2.4K
Filtration and Urine Formation
50.1K
The function of the kidneys is to filter, reabsorb, secrete, and excrete. Every day the kidneys filter nearly 180 liters of blood, initially removing water and solutes but ultimately returning nearly all filtrates into circulation with the help of osmoregulatory hormones. This process removes wastes and toxins but is also crucial to maintain water and electrolyte levels. Most of these functions are performed by the tiny but numerous nephrons contained within the kidneys.
50.1K


