Related Experiment Video
Updated: Jun 19, 2026
05:53
An Effective Mouse Model of Unilateral Renal Ischemia-Reperfusion Injury
Published on: July 15, 2021
EXPERIMENTAL HYPERTENSION : THE EFFECTS OF UNILATERAL RENAL ISCHEMIA COMBINED WITH INTESTINAL ISCHEMIA ON THE
A Blalock1, S E Levy, R D Cressman
1Department of Surgery of Vanderbilt University, Nashville, Tennessee.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Combined kidney and intestinal ischemia caused lasting high blood pressure in most studied animals. This research highlights the significant impact of dual organ ischemia on cardiovascular regulation.
Area of Science:
- Cardiovascular Physiology
- Renal Physiology
- Gastrointestinal Physiology
Background:
- Ischemia, a condition of inadequate blood supply, can affect multiple organs simultaneously.
- The interplay between renal and intestinal ischemia and its systemic effects, particularly on blood pressure, is not fully understood.
Purpose of the Study:
- To investigate the impact of combined unilateral renal ischemia and intestinal ischemia on arterial blood pressure.
- To determine the duration and extent of blood pressure elevation following this dual ischemic event.
Main Methods:
- Surgical induction of unilateral renal ischemia in animal models.
- Superimposition of intestinal ischemia onto the pre-existing renal ischemia.
- Continuous monitoring of arterial blood pressure over an extended period.
Main Results:
- A high percentage of animals exhibited a prolonged elevation in arterial blood pressure.
- The combined ischemic insult led to sustained hypertensive effects.
Conclusions:
- Unilateral renal ischemia combined with intestinal ischemia is a potent trigger for sustained arterial hypertension.
- These findings suggest a significant link between dual organ ischemia and the dysregulation of blood pressure control mechanisms.
Related Concept Videos
01:18Hypertension and Regulation of Blood Pressure
Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
01:29Hypertension II: Pathophysiology
Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
01:25Antihypertensive Drugs: Direct Renin Inhibitors
The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...