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INTRODUCTION Discussion on the frequency of coexistent celiac disease and type 1 diabetes mellitus (DM1) as well as an attempt to standardize diagnostic methods of celiac disease detection among DM1 children have been performed. OBJECTIVES To assess the incidence of celiac disease among DM1 children in the Pomeranian region of Poland followed by analysis(More)
Nitric oxide (NO) plays a crucial role in the regulation of kidney function and metabolism. Our previous study showed that dexamethasone, one of several known selective inhibitors of inducible nitric oxide synthase (NOS), had a stimulatory effect on soluble guanylyl cyclase in the glomeruli of rat kidney. However, in the presence of dexamethasone, the(More)
Hyperglycemia increases the production of reactive oxygen species (ROS). NAD(P)H oxidase, producing superoxide anion, is the main source of ROS in diabetic podocytes and their production contributes to the development of diabetic nephropathy. We have investigated the effect of an antidiabetic drug, metformin on the production of superoxide anion in cultured(More)
The podocytes are highly differentiated cells playing a key role in glomerular filtration. Vasoactive factors including angiotensin II (Ang II) and cyclic guanosine 5' monophosphate (cGMP) are synthesized by these cells upon stimulation as well as in the basal state. In this study we have tested whether angiotensin II affects the total synthesis of cGMP in(More)
The presence of a well-developed contractile apparatus is the feature determining major roles of podocytes in the renal glomeruli. Receptors for a variety of vasoactive hormones are expressed in these cells; however, most of the signaling pathways are still unknown and remain to be elucidated. Angiotensin II (Ang II) and atrial natriuretic peptide (ANP),(More)
We measured capability for guanosine 3',5'-cyclic monophosphate (cGMP) synthesis by isolated renal glomeruli from steroid-treated rats. Glomeruli obtained from animals treated with dexamethasone showed 5-fold higher sensitivity to sodium nitroprusside (SNP) than glomeruli from deoxycorticosterone- or saline-treated rats. Similar increase in activity of the(More)
BACKGROUND High glucose and mechanical strain resulting from capillary hypertension are relevant risk factors affecting glomerular cells in diabetes. Altered activity of the natriuretic peptide (NP) system acting via vasorelaxing cyclic guanosine 5' monophosphate (cGMP) has been proposed to be one of the reasons for diabetes-dependent impairment of kidney(More)
ANP and NO act via different receptors, although inducing the common intracellular messenger - cyclic GMP. However, interaction between both factors remains unclear. Our observations suggested that in the rat kidney glomeruli, activities of the ANP- and NO-dependent guanylyl cyclase systems may be mutually compensated. To check this, we have tested effects(More)
Natriuretic peptides (NP), together with nitric oxide (NO) are powerful relaxing factors acting via a common second messenger, cyclic GMP (cGMP). Together with other vasoactive modulators, these vasorelaxing factors play an essential role in regulating the function of kidney glomeruli. The presence of NP receptors in podocytes has been well documented.(More)
Proteolytic enzymes exist in plasma ultrafiltrates, concentrated dialysates, and urine fractions of patients with posttraumatic acute renal failure (ARF), as well as in urine fractions of patients with nephrotic syndrome and in concentrated dialysates of patients or routine dialysis therapy (RDT). Differences in the digestion pattern of phosphorylase kinase(More)