These macrophage-derived mediators may have potential as biomarkers to reflect the urinary stone risk, according to a new study from Japan, which was recently presented at the recent 2nd Meeting of the EAU Section of Urolithiasis and received Clinical Research Award.
Compared to that of control subjects, the urine from individuals with a history of kidney stone formation showed significantly increased levels of the inflammatory chemokines GRO and CXCL1, and significantly decreased levels of IL-4, an anti-inflammatory cytokine involved in macrophage migration. According to Dr. Dr. Atsushi Okada, of Nagoya City University in Japan, this research deals with some very important issues in the field of urolithiasis.
"To date, the risk evaluation and the preventive index of kidney stone formation have been dependent on urinary inorganic matter such as calcium, phosphorus, magnesium, uric acid, oxalate and citrate. However, stone formers don't often show such an abnormality," he explained.
"In a series of preceding studies, we examined organic substance in kidney stones, such as protein from kidney tissue, and revealed that stone matrix and genetic environment of renal tubular cells are as important as urinary inorganic condition for kidney stone formation."
"In the past we have also shown that in mice, certain regulatory mechanisms protect against urinary calcium oxalate stone formation, and that these mechanisms may be mediated by anti-inflammatory Type 2 macrophages (M2s). However, regulatory roles of M2 macrophages in urinary stone formation in humans have not been studied."
This latest study aimed to identify urinary M2 macrophage-associated markers, by performing multiplex urinalysis in individuals prone to developing calcium oxalate kidney stones. The authors were able to observe that stone-formers had a higher level urinary M1 markers, whereas non-stone formers had a higher level of M2 markers.
Dr. Okada believes that this study may have pronounced implications for clinical practice.
"If the usefulness of these macrophage markers is established, it will be possible to evaluate kidney stone risk not only through inorganic but also some organic substances. Furthermore, these results may lead to the development of new therapeutic drugs for kidney stone formation to control macrophage function.
Reference: A. Okada et al, Macrophage-derived cytokines and chemokines may be novel markers to predict calcium oxalate stone formation in humans, Abstract E88, 2nd Meeting of the EAU Section of Urolithiasis.
Evgenia Starkova | EurekAlert!
Nanoparticles as a Solution against Antibiotic Resistance?
15.12.2017 | Friedrich-Schiller-Universität Jena
Plasmonic biosensors enable development of new easy-to-use health tests
14.12.2017 | Aalto University
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences