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Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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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...
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Nephrotic Syndrome I : Introduction
01:24

Nephrotic Syndrome I : Introduction

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Xenotransplantation: problems and prospects

F H Bach1

  • 1Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA. fbach@bidmc.harvard.edu

Annual Review of Medicine
|March 24, 1998
PubMed
Summary
This summary is machine-generated.

Xenotransplantation using pig organs offers a solution to organ shortages. Genetic engineering strategies are being developed to overcome immune rejection, paving the way for potential clinical applications.

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Area of Science:

  • Transplantation immunology
  • Genetic engineering
  • Organ replacement strategies

Background:

  • Growing shortage of human organs for transplantation.
  • Increasing interest in porcine xenotransplantation due to organ scarcity.
  • Advancements in overcoming hyperacute rejection in xenografts.

Purpose of the Study:

  • To review current progress in overcoming xenograft rejection.
  • To explore genetic engineering strategies for donor pigs.
  • To discuss challenges and controversies in xenotransplantation.

Main Methods:

  • Review of existing research on xenotransplantation and immune rejection.
  • Analysis of genetic modification techniques applied to donor pigs.
  • Discussion of identified rejection factors, including endothelial cell activation.

Main Results:

  • Hyperacute rejection in xenotransplantation is becoming manageable.
  • Delayed xenograft rejection, independent of T lymphocytes, is a significant challenge.
  • Genetic engineering holds promise for creating multi-transgene donor pigs.

Conclusions:

  • Overcoming delayed xenograft rejection is crucial for clinical success.
  • Multi-transgene donor pigs are a key goal for future xenotransplantation.
  • Continued research and discussion are needed to address xenotransplantation controversies.