Supplementary MaterialsSupplementary Data. and high ABI, respectively. Outcomes The mean age was 76?years and 15% had an estimated glomerular filtration rate (eGFR)? 60?mL/min/1.73 m2. The mean bicarbonate was 25.2??2.1?mEq/L and the mean AVpH was 7.41??0.03. Compared with participants in the normal bicarbonate category, those in the low bicarbonate group had 8.8% higher PWV (P?=?0.006) and 1.87 greater odds of high ABI (P?=?0.04). However, the associations were not significant after adjusting for eGFR (P?=?0.24 and 0.43, respectively). There was no difference in PWV or high ABI across AVpH tertiles. Results were similar in those with and without chronic kidney disease and after excluding participants on diuretics. Conclusions We did not observe an independent association of bicarbonate or AVpH with arterial stiffness measured by high PWV or ABI in community-living older individuals. Future studies evaluating patients with a greater severity of chronic kidney disease and with more extreme alterations in acidCbase status are warranted. (%)0.007??Women875 (52)79 (44)687 (51)109 (61)?Race-ethnicity, (%) 0.001??Black602 (35)59 (33)448 (33)95 (53)?Clinic site, (%)0.03??Memphis631 (37)75 (42)477 (36)79 (44)??Pittsburgh1067 (63)103 (58)864 (64)100 (56)Clinical characteristics?Body mass index, kg/m227.4 Gemzar manufacturer (4.7)27.2 (4.7)27.5 (4.6)27.1 (5.4)0.57?Smoking status, (%)0.003??Never smoked773 Gemzar manufacturer (46)67 (38)611 (46)95 (53)??Former smoker796 (47)87 (49)634 (47)75 (42)??Current smoker128 (8)24 (13)95 (7)9 (5)?CKDa, (%)183 (12)44 (28)116 (10)23 (14) 0.001?Diabetes mellitus, (%)322 (19)46 (26)239 (18)37 (21)0.03?Hypertension, (%)1275 (75)131 (74)995 (74)149 (83)0.03?Systolic BP, mmHg140 (21)140 (20)140 (21)143 (23)0.13?Diastolic BP, mmHg74 (11)73 (10)74 (11)76 (11)0.05?Pulse pressure, mmHg66 MRPS31 Gemzar manufacturer (19)67 (20)66 (18)67 (18)0.63?Pulse, beats per min68 (11)68 (12)67 (10)69 (11)0.18?Antihypertensive medication, (%)??RAAS blockage393 (23)51 (29)296 (22)46 (26)0.10??Diuretics464 (27)30 (17)336 (25)98 (55) 0.001Laboratory data?AVpH7.41 (0.03)7.40 (0.04)7.41 (0.02)7.41 (0.03) 0.001?Serum bicarbonate, mEq/L25.2 (2.1)21.5 (1.3)25.2 (1.3)28.7 (1.1) 0.001?Arterialized venous pCO2, mmHg40.4 (3.9)35.5 (3.1)40.4 (3.0)45.8 (3.6) 0.001?Serum albumin, g/dL4.0 (0.3)4.0 (0.3)4.0 (0.3)4.0 (0.3)0.14?Serum calcium, mg/dL8.8 (0.4)8.8 (0.5)8.8 (0.4)8.9 (0.5)0.27?Hemoglobin A1c6.3 (1.0)6.5 (1.2)6.2 (1.0)6.4 (1.1)0.006?eGFR, mL/min/1.73 m280.0 (16.5)71.3 (20.2)81.2 (15.4)79.5 (17.8) 0.001?Urine albumin:creatinine ratio, median (IQR)8.0 (4.5C18.4)11.7 (5.8C27.3)7.6 (4.2C17.0)9.6 (5.2C24.0) 0.001*?PWV, median (IQR), cm/s793 (632C1033)866 (678C1107)784 (630C1024)791 (606C1027)0.06*?ABI, (%)0.09??0.9C1.31350 (80)128 (72)1079 (80)143 (80)??1.31 or incompressible84 (5)14 (8)63 (5)7 (4) Open in a separate window = 586),= 598),= 514),= 487),= 506)= 441),[25] found that among diuretic nonusers, bicarbonate 25?mEq/L was associated with 1.0?mmHg higher aortic pulse pressure (95% CI 0.4C2.0) compared with those with bicarbonate 23C24?mEq/L. Our sensitivity analyses of diuretic nonusers showed no association between acidCbase status and arterial stiffness. Reasons for the discrepancy in outcomes may be the different research populations, with individuals from the MESA becoming younger compared to the Wellness ABC research (mean age group 60 versus 70?years) and various measurements for arterial stiffness (aortic pulse pressure versus PWV/ABI/pulse pressure). The reason why for our null results are not particular, but we regarded as three potential explanations. First, our hypothesis was predicated on the outcomes from preclinical experiments, which might not be relevant to humans. Particularly, we hypothesized that old people with higher serum bicarbonate amounts or pH could have higher arterial stiffness weighed against people that have lower bicarbonate or pH. Within an study [13], when rat aortas had been intermittently subjected to moderate with pH improved from basal degrees of 7.4 to 7.5 for 5?h almost every other day time, aortic calcification increased 2.5-fold weighed against aortas subjected to a continuous pH of 7.4. This finding might not be generalized to configurations or to human beings. Metabolic acidosis might not just influence arterial calcification, but also bone resorption. As bone can be a significant Gemzar manufacturer proton buffer, metabolic acidosis stimulates mineral dissolution of the bone, leading to Gemzar manufacturer efflux of calcium and phosphate to the bloodstream [26]. In rats, chronic metabolic acidosis reduced total bone mineral density [27]. In human beings, low serum bicarbonate offers been connected with lower bone mineral density aswell [28]. Therefore, although metabolic acidosis may lower arterial calcification by raising the solubility of calcium and phosphate, it could also promote arterial calcification via its results on bone resorption to improve circulating calcium and phosphate concentrations. Second, the association between acidosis and vascular stiffness and calcification could be different among individuals with and without CKD. In the pet research that examined the consequences of acidosis on vascular calcification, rats with 5/6 nephrectomy (i.electronic. remnant kidney style of uremia) had been utilized [14]. Administration of calcitriol to these uremic rats led to significant aortic calcification, but calcitriol-treated uremic rats with acidosis didn’t develop aortic calcification. Our null results could reflect the considerably smaller sized variation in bicarbonate and AVpH and lower intensity of acidosis evaluated in medical ABC study weighed against the adjustments in bicarbonate or.
Supplementary MaterialsSupplementary Data. and high ABI, respectively. Outcomes The mean age
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a 67 kDa type I transmembrane glycoprotein present on myeloid progenitors
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