Attention Nephrology Fellows: Compete in the 2nd Annual NephMadness Invitational Tournament at the 2025 NKF Spring Clinical Meeting!
Onconephrology Early Program at ASN , titled “Onconephrology: Cancer, Its Treatments and the Kidneys.”
Leucine Crystals in the Urine – Still enigmatic after more than 150 years
Wanted: RFN Fellow Editor (Application Due 11/1)
Kidney Comics: The Nephron Factory
Skeleton Key Group Case #35: Rhabdo Fiasco
2025 NephSIM Nephrons: Application Due 11/1 (For Medical Students & Residents)
Advances in Peritoneal Dialysis Symposium: 9/27 (In-Person)
Skeleton Key Group Case #34: Adrenal Insufficiency- A Salty Saga
Nate’s Corner: Where Does the Hyperglycemia Correction Factor for Sodium Come From?
Margaret DeOliveira, MDRenal Fellow Network Co-Editor Sodium correction for hyperglycemia is a common topic but what is the physiology behind it? When patients are hyperglycemic, the serum osmolarity is higher as a result of glucose being an effective…
Nate’s Corner: Kidney Involvement in IgG4-Related Disease
Post by: Dearbhla Kelly, Dublin, Ireland Every so often in the Nephrology clinic, I come across this uncommon, but increasingly recognized entity of IgG4-related disease (IgG4-RD). IgG4-RD is an immune-mediated, fibrous and chronic inflammatory condition that comprises a…
Nate’s Corner: We Love a Silver Stain, but Your Non-Argyrophilic Casts Do Not
This past weekend, Arkana Laboratories hosted another live pathology session covering part II of all things intratubular casts (now focused on crystalline intratubular casts). Dr. Zeljko Dvanajscak helmed the microscope, taking viewers through the 4 major categories of…
From the Nate Hellman Unpublished Archives: Proteinuria Values
When it comes to monitoring proteinuria, some nephrologists prefer following urine albumin levels, whereas others prefer monitoring urine protein levels. While there is nothing inherently wrong with either, it is helpful to keep the following reference values in…
From the Nate Hellman Unpublished Archive: Xanthogranulomatous Pyelonephritis
Image from Radiology Picture of the Day http://www.radpod.org/2007/06/19/xanthogranulomatous-pyelonephritis/ Xanthogranulomatous pyelonephritis (XGP) is a rare but severe complication of chronic UTIs. I think of it (in simplistic terms) as a pyelonephritis so severe that it results in loss of…
From the Nate Hellman Unpublished Archive: microRNAs and the Kidney
MicroRNAs: one of the sexiest topics in the science community these days! Pick up a copy of Science, Nature, or Cell and you can usually find something to do with microRNAs within. What do these have to do…
From the RFN archives: The Brenner Hypothesis
The Brenner Hypothesis–developed by Barry Brenner of the Brigham and Women’s Hospital, author of the well-known Brenner & Rector “The Kidney” textbook–states that individuals with a congenital reduction in nephron number have a much greater likelihood of developing…
Nathan Hellman Memorial Award
Nate Hellman MD PhD, the founder of the Renal Fellow Network, died tragically just over two months ago. He was a wonderful person, who possessed a strong sense of humanity, humor and compassion. Nate touched the lives of…
Revealed: my “covert” project with Nate a.k.a TRP channels in the kidney
Nate Hellman’s bench was three benches down from my lab. Nate and I trained together as clinical fellows. He and I had also brainstormed on research projects involving TRP channels and kidney disease. TRP channels are my research…
Nathan Hellman Rest In Peace
It is with great sadness and sorrow that I am writing to inform you of the passing of Nathan Hellman, MD, PhD, and founder of the Renal Fellow Network Blog. I worked with Nathan in the Division of…