Higher Serum Uric Acid Levels Research Articles

The relationship of masked hypertension with autonomic dysfunction and cardiometabolic parameters: a case-control study.

Masked hypertension (MH) is associated with cardiovascular events and mortality. Data on the association between exaggerated blood pressure response (EBPR) to exercise, heart rate recovery (HRR), which are indicators of autonomic dysfunction, and MH are lacking. This study aimed at evaluating the association between EBPR, HRR, and MH. Between January 2020 and January 2021, 130 MH (57 male, median age = 52.8 years) and 60 healthy (28 male, median age = 40.8 years) subjects were included in this single-center, case-control, and cross-sectional study. Office blood pressure measurement, 24-hour ambulatory blood pressure monitoring, treadmill test, echocardiography, and specific biochemical parameters were evaluated. The frequency of blunted HRR (73 subjects, 56.2%) and EBPR (40 subjects, 30.8%) were significantly higher in patients with MH (p < 0.001). Patients with MH had higher serum uric acid levels and frequency of hyperlipidemia (p < 0.05). Diameters of the left atrium (LA), aortic root, and ascending aorta were significantly higher in MH patients (p < 0.05). Thirty-two (24.6%) patients with MH had left ventricular hypertrophy and 33 (25.4%) had diastolic dysfunction (p < 0.001). Multivariate analysis identified the presence of blunted HRR as an independent predictor factor of MH as well as smoking, hyperlipidemia, GFR, LA diameter, and aortic root diameter were other independent factors. The frequency of blunted HRR and EBPR were significantly higher in the MH group compared to the control group, suggesting a close relationship between MH and autonomic dysfunction.

ROLE OF DUAL ENERGY COMPUTED TOMOGRAPHY IMAGING IN GOUT

Context: Gout is a crystal induced inammatory arthritis triggered by crystallization of uric acid in joints. The detection of urate crystals is done using polarization light microscopy after synovial uid aspiration which is approach is invasive. Dual energy CT (DECT) is a new imaging modality that is able to identify tophi based on their chemical composition. To evaluate the rol Aims: e of Dual Energy Computed Tomography imaging in gout. A cross sectional observational study, comprising of 30 clinically suspected pati Settings And Design: ents of gout underwent DECT of all peripheral joints (including hand, wrist, elbow, ankle, foot and knee). This Methods And Material: study was conducted on 128 slice SIEMENS Somatom Denition Flash CT scan. A dual energy gout colour coded protocol assessed the chemical composition of the material and an automated volume assessment software, measured the monosodium urate crystal deposition volume. Analysis was Statistical Analysis Used: done using SPSS version 21.0. In lower limb the MTP joint (73.33%) was commonest foll Results: owed by ankle (33%) and knee (26%) with mean crystal volume of 3.51 cm3. In upper limb, MCP and PIP joints (20%) of hand are most commonly affected with mean volume of 0.24cm3. High serum uric acid (&gt;6.4mg/dl) levels showed a positive correlation with MSU crystal deposition in all peripheral joints on DECT. Conclusions: DECT is useful for the diagnosis of gout in symptomatic patients. It can detect MSU crystals volume and urate burden non-invasively.

The Additive Values of the Classification of Higher Serum Uric Acid Levels as a Diagnostic Criteria for Metabolic-Associated Fatty Liver Disease.

Serum uric acid (SUA) is regarded as an independent risk factor for nonalcoholic fatty liver disease (NAFLD). However, the role of SUA in the new diagnosis flowchart of metabolic-associated fatty liver disease (MAFLD) remains unclear. A cross-sectional study enrolled consecutive individuals with ultrasonography and magnetic resonance imaging–based proton density fat fraction (MRI-PDFF) measurements in the First Affiliated Hospital of Sun Yat-sen University from January 2015 to December 2021. All patients were divided into four groups according to their baseline SUA levels and sex. Of the 3537 ultrasound-diagnosed and 1017 MRI-PDFF-diagnosed MAFLD patients included, the prevalence of severe steatosis determined with ultrasound or MRI-PDFF increased across the serum SUA quartiles. The SUA cutoffs were identified as ≥478 µmol/L and ≥423.5 µmol/L for severe steatosis in male and female MAFLD, respectively. Furthermore, using these cutoff values, patients with higher SUA levels in the NAFLD–non-MAFLD group had higher liver fat contents than those without (16.0% vs. 9.7%, p < 0.001). The lean/normal-weight NAFLD–non-MAFLD patients with higher SUA levels are still at high risk of severe steatosis. This study supports the rationale for SUA being established as another risk factor for metabolic dysfunctions in lean/normal-weight MAFLD.

Effects of Uric Acid on Disease Severity and Mortality in Hospitalized Covid-19 Patients

Objective: High and low uric acid (UA) levels in the general population are associated with mortality. Information on the association of UA levels with clinical outcomes in COVID-19 patients is contradictory. We investigated the relationship between UA levels and clinical endpoints in COVID-19 patients.Methods: Laboratory and clinical parameters, including UA at the admission of hospitalized COVID-19 patients, were recorded retrospectively. Binary logistic regression analysis determined risk factors for mortality and the intensive care unit (ICU) needs. Results: This study included 708 patients (57.1% men), and the median age was 63 (18-98) years. Two hundred and three (28.7%) patients needed ICU, and 107 (15.7%) died. Uric acid levels were significantly higher in the deceased (6.5 vs. 4.9; p&amp;lt;0.001). Uric acid levels were similar in patients who needed ICU and those who did not (5 vs. 5.1; p=0.348). High UA (&amp;gt;median value 5.1 mg/dL) group have higher mortality rate (22.4% vs. 9.5%; p&amp;lt;0.001). In multivariate analyses, a high UA level was a risk factor for mortality [OR 1.93 (1.08 – 3.44); p=0.026]. In addition, age [OR 1.03 (1.01 – 1.05); p=0.004], albumin [OR 0.30 (0.17 - 0.52); P&amp;lt;0.001], neutrophil-to-lymphocyte ratio [OR 1.04 (1.01 – 1.06); p=0.003] and procalcitonin [OR 1.06 (1.0 – 1.11); p=0.048] was associated with mortality. A high UA level was not a risk factor for ICU need (p=0.780).Conclusion: High serum UA level affects mortality in COVID-19 patients. Risk assessment for the prognosis of patients can be made according to the UA levels at admission.

UHPLC-MS/MS-Based Metabolomics and Clinical Phenotypes Analysis Reveal Broad-Scale Perturbations in Early Pregnancy Related to Gestational Diabetes Mellitus.

Gestational diabetes mellitus (GDM) is the most common metabolic disturbance during pregnancy, with adverse effects on both mother and fetus. The establishment of early diagnosis and risk assessment model is of great significance for preventing and reducing adverse outcomes of GDM. In this study, the broad-scale perturbations related to GDM were explored through the integration analysis of metabolic and clinical phenotypes. Maternal serum samples from the first trimester were collected for targeted metabolomics analysis by using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Statistical analysis was conducted based on the levels of the 184 metabolites and 76 clinical indicators from GDM women (n =60) and matched healthy controls (n =90). Metabolomics analysis revealed the down-regulation of fatty acid oxidation in the first trimester of GDM women, which was supposed to be related to the low serum level of dehydroepiandrosterone.While the significantly altered clinical phenotypes were mainly related to the increased risk of cardiovascular disease, abnormal iron metabolism, and inflammation. A phenotype panel established from the significantly changed serum indicators can be used for the early prediction of GDM, with the area under the receiver-operating characteristic curve (ROC) 0.83. High serum uric acid and C-reaction protein levels were risk factors for GDM independent of body mass indexes, with ORs 4.76 (95% CI: 2.08-10.90) and 3.10 (95% CI: 1.38-6.96), respectively. Predictive phenotype panel of GDM, together with the risk factors of GDM, will provide novel perspectives for the early clinical warning and diagnosis of GDM.

Association of Serum Uric Acid Levels in Patients with Acute Ischemic Stroke and Clinical Outcome

Background: Stroke is one of the most common, most fatal, and debilitating neurologic diseases. Numerous risk factors are involved in the development of strokes, such as hypertension, cigarette smoking, hyperlipidemia, and diabetes. In addition, other factors may influence the disease's development or course, like uric acid serum level.&#x0D; Objective: To determine the association between serum uric acid (SUA) levels in patients with acute ischemic stroke and clinical outcomes.&#x0D; Material and method: This was a longitudinal descriptive study carried out among one hundred and twenty consecutive patients with acute ischemic stroke (AIS) admitted to the Department of Neuromedicine, Rajshahi Medical College Hospital ( during a period of two years from July'2015 to July' '2017 were included in the study. 12.11 years. Of 120 patients with AIS, 60.8% were male, and 39.2% were female. The study revealed that AIS patients with high SUA levels have significantly lower Glasgow Coma Scale (GCS) scores in comparison to normal SUA levels (p&lt;0.001). There is also a considerably higher modified Rankin Score (mRS) at discharge (4.02 ± 1.47), at one month (4.03 ± 1.01), and at three months (4.21 ± 1.12) (p&lt; 0.001). Thus in our study, mRS analysis showed a significant clinical deterioration in patients with high SUA levels. A comparison of clinical outcomes of AIS patients by MRS between high and normal SUA levels revealed that at three months of follow-up, there is significant deterioration in patients with high SUA levels (p&lt;0.001). There was significantly less improvement with high SUA levels (p&lt;0.001).In this study, a total of 20 patients died at different intervals; at discharge (11), at one month (3), and three months (6). The study showed that patients with high SUA levels had significantly increased mortality in comparison to patients having normal SUA levels. It was statistically significant at discharge and one month (p&lt;0.01 and p&lt;0.05) but not significant at three months (p&gt;0.05).&#x0D; Conclusion: A significant association was found between high serum uric acid levels and the clinical outcome of AIS patients. Estimation of serum uric acid offers a simple, inexpensive, quick, and non-invasive method for identifying such high-risk patients.&#x0D; TAJ 2022; 35: No-1: 63-69

Retinal Microvasculature and Choriocapillaris Flow Deficit in Relation to Serum Uric Acid Using Swept-Source Optical Coherence Tomography Angiography.

PurposeTo explore the relationship between serum uric acid (SUA) and retinochoroidal microcirculation in the Chinese population.MethodsThis prospective cross-sectional study was conducted among the residents of Guangzhou, southern China. A commercially available optical coherence tomography angiography (OCTA) device was used to obtain the superficial vessel density (SVD) and deep vessel density in the retina and the choriocapillaris flow deficit (CFD) in the macular region. Univariable and multivariable linear regression models were used to assess the association of hyperuricemia and SUA levels with OCTA parameters.ResultsA total of 638 participants with normal SUA and 296 participants with hyperuricemia were included in the study. Parafoveal SVD was significantly reduced among the participants with hyperuricemia compared to participants with normal SUA (P < 0.001), while the parafoveal CFD was higher in hyperuricemic participants than those of normal SUA levels (P = 0.007). After adjusting for potential confounders, greater SUA levels was associated with lower SVD (β = −0.078; P < 0.001) and greater CFD (β = 0.015; P = 0.011). Gender difference analysis indicated that a 10-µmol/L increase in SUA levels among the female participants led to a 0.144 decrease in SVD (P < 0.001), but it was not statistically significant for the male participants (P = 0.653).ConclusionsAn elevated uric acid level and its fluctuations were independently associated with impaired retinal and choroidal microcirculation using OCTA in the study population. Women appear to be more sensitive to high SUA levels than men.Translational RelevanceElevating uric acid concentration may play a role in the development and progression of cardiovascular diseases through microvascular alteration, as demonstrated by OCTA parameters.

Baseline serum uric acid level is associated with progression-free survival, disease control rate, and safety in postoperative patients with colorectal cancer treated by FOLFOX, FOLFIRI, or XELOX.

BackgroundHigh serum uric acid (SUA) levels increase the risk of overall cancer morbidity and mortality, particularly for digestive malignancies. Nevertheless, the correlation between SUA level and clinical outcomes of the postoperative patients with colorectal cancer (CRC) treated by chemotherapy is unclear. This study aimed at exploring the relationship between baseline SUA level and progression-free survival (PFS), disease control rate (DCR), and safety in postoperative CRC patients receiving chemotherapy.Patients and MethodsWe conducted a retrospective study to evaluate the relationship between baseline SUA level and PFS, DCR, and incidence of serious adverse events of 736 postoperative CRC patients treated with FOLFOX, FOLFIRI or XELOX at our center.ResultsData from our center suggested that high baseline SUA level is linked to poor PFS in non-metastatic CRC patients using FOLFOX (HR=2.59, 95%CI: 1.29-11.31, p=0.018) and in male patients using FOLFIRI (HR=3.77, 95%CI: 1.57-39.49, p=0.012). In patients treated by FOLFIRI, a high SUA is also linked to a low DCR (p=0.035). In patients using FOLFOX, high baseline SUA level is also linked to a high incidence of neutropenia (p=0.0037). For patients using XELOX, there is no significant correlation between SUA level and PFS, effectiveness, or safety.ConclusionsThese findings imply that a high SUA level is a promising biomarker associated with poor PFS, DCR and safety of postoperative CRC patients when treated with FOLFOX or FOLFIRI.

Higher Levels of Serum Uric Acid Have a Significant Association with Lower Incidence of Lower Urinary Tract Symptoms in Healthy Korean Men.

Gout has been correlated with the risk of incident benign prostatic hyperplasia. In line with increasing prevalence of hyperuricemia, the aim of this study was to investigate the relationship between serum uric acid (SUA) level and the incidence of lower urinary tract symptoms (LUTS) among clinically healthy middle-aged men. We performed a cohort study in 101,091 Korean men without LUTS at baseline who completed health checkups between 2011 and 2016. LUTS were evaluated using the International Prostate Symptom Score, where a score ≥ 8 was defined as significant LUTS. Men were divided into six groups according to their SUA levels in mg/dL (<5.5, 5.5–6.4, 6.5–7.4, 7.5–8.4, 8.5–9.4, and ≥9.5). Throughout the follow-up—encompassing a total of 358,982.6 person years—13,424 people had significant LUTS (37.3 per 1000 person years for incidence rate). The multivariable models demonstrated that the highest level of SUA (≥9.5 mg/dL) was related to the lowest risk of significant LUTS compared with the reference category (<5.5 mg/dL) (0.77 (95% CI 0.59–0.99) for adjusted HR). In this large cohort composed of middle-aged men, higher SUA levels were related to a reduced risk of LUTS. This result suggests another potential role of SUA in restraining LUTS. Additional studies are needed to explain the underlying biological mechanisms of this phenomenological relationship.

U-shaped association between abnormal serum uric acid levels and COVID-19 severity: reports from the Japan COVID-19 Task Force

ObjectivesThis study aimed to identify the relationship between abnormal serum uric acid levels or a history of hyperuricemia and COVID-19 severity in the Japanese population. MethodsWe included 1523 patients enrolled in the Japan COVID-19 Task Force cohort between February 2020 and May 2021. We compared the clinical characteristics, including co-morbidities, laboratory findings, and outcomes, particularly invasive mechanical ventilation (IMV), among patients with and without abnormal uric acid levels or a history of hyperuricemia. ResultsPatients with high serum uric acid levels were older and had higher body weight and body mass index than those without. In addition, the multiple logistic regression analysis revealed a significant association between high serum uric acid levels or a history of hyperuricemia and an increased risk of IMV (odds ratio [OR] = 1.77; P = 0.03/OR = 1.56; P = 0.04). Moreover, patients with low uric acid levels on admission were also associated significantly with the requirement of IMV (OR = 5.09; P <0.0001). ConclusionAbnormal serum uric acid levels or a history of hyperuricemia were significantly associated with COVID-19 severity in the Japanese cohort.

Uric acid levels are associated with severity and mortality in patients with acute coronary syndrome

Acute coronary syndrome (ACS) causes a serious of coronary artery diseases that associated with sudden and reduced blood flow to the heart. The aim of this study was to assess the potential of serum uric acid (SUA) to predict severity and mortality in patients with ACS. According to their SUA levels, eligible participants were assigned into the Hyperuricemia group and the Normouricemia group (control group). All the patients were requested to enroll into a 1-year follow-up, and the final clinical outcomes included the SYNTAX and Gensini scores, major adverse cardiovascular events (MACEs), and cardiovascular mortality. In total, 874 participants were followed-up. Individuals with high levels of uric acid bore more disease vessels exhibited higher SYNTAX and Gensini scores. Besides, patients in the Hyperuricemia group showed elevated rates of MACE and cardiovascular mortality. High SUA level is positively associated with severity and mortality of patients with ACS. SUA might be a novel ACS prediction marker and risk factor in clinical diagnosis.

P-355 Association between high serum uric acid level and adverse reproductive outcomes in infertile women with polycystic ovary syndrome

Abstract Study question Does high serum uric acid (SUA) level affect the reproductive outcomes in women with polycystic ovary syndrome (PCOS) undergoing in-vitro fertilization (IVF)? Summary answer Elevated SUA is associated with decreased live birth rate, biochemical pregnancy rate and clinical pregnancy rate, and increased miscarriage rate in women with PCOS. What is known already SUA levelsand the prevalence of hyperuricemia (25.48%) are both significantly higher in women with PCOS than in women without PCOS (8.74%). SUA levels also can be used as a predictor of pregnancy complications (gestational diabetes mellitus and hypertensive disorders of pregnancy) and adverse foetal outcomes (preterm birth and low birth weight). Study design, size, duration This retrospective cohort study was conducted ininfertile women with PCOS between September 2012 and December 2019. Participants/materials, setting, methods A total of 1,032 infertile PCOS women undergoing their first IVF/ICSI cycle were observed. Data of reproductive outcomes including live birth rate, biochemical pregnancy rate, clinical pregnancy rate, and miscarriage rate were analyzed according to the quartile groups of SUA levels. Main results and the role of chance In quartiles of SUA levels, there was a significant decreasing trend in live birth rate from the lowest quartile (Q1: 34.5%) to the highest (Q4: 19.2%) (Pfor trend &amp;lt;0.001). Notably, the miscarriage rate in Q4 was significantly higher than that in the other 3 quartiles (all P values &amp;lt; 0.05). From Q1 to Q4, the incidence of miscarriage dramatically increased from 15.5% to 31.0% (Pfor trend &amp;lt;0.05). In addition, the biochemical pregnancy rate and clinical pregnancy rate decreased significantly from the lowest quartile to the highest (Pfor trend &amp;lt;0.05). With the first quartile of uric acid as the reference group, the logistic regression analysis showed that in both unadjusted and adjusted models, elevated SUA level was associated with significantly lower probabilities of live birth, biochemical pregnancy, and clinical pregnancy, and a higher risk of miscarriage in a linear fashion (all Pfor trend&amp;lt; 0.05). Limitations, reasons for caution This study is limited by its retrospective design. It was difficult to ensure consistency in clinical practice among the physicians. Wider implications of the findings Our study suggeststhat clinical physicians need to pay close attention to PCOS women with high SUA levelsbefore IVF treatment. Prospective studies to determine an appropriate range of lower-SUA levels prior to treatment is necessary to support our findings. Trial registration number not applicable

Concurrent presence of high serum uric acid and inflammation is associated with increased incidence of type 2 diabetes mellitus in Korean adult population

Although serum uric acid level and systemic inflammation have been highlighted as risk factors for type 2 diabetes mellitus (T2DM), little is known about these associations in the Korean population. Thus, we examined the individual and combined associations of serum uric acid and systemic inflammation (evaluated using high-sensitivity C-reactive protein [hs-CRP] measurement) with the future risk of T2DM. A total of 4152 Korean adults aged 45–76 years without T2DM, cancer, or gout at baseline in 2007–2008 from the Korean Genome and Epidemiology Study were followed up until 2016. Cox proportional hazard models were used to estimate the multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) of T2DM according to sex-specific tertiles of serum uric acid and hs-CRP levels after adjustment for confounders. During the mean follow-up of 7.3 years, 548 participants developed T2DM. High serum uric acid and hs-CRP levels were independently associated with an increased incidence of T2DM. The multivariable-adjusted HRs (95% CIs) for the incidence of T2DM in the highest tertiles of serum uric acid and hs-CRP were 1.54 (1.24–1.93) and 1.90 (1.48–2.43), respectively. High levels of serum uric acid and hs-CRP in combination were associated with an increased incidence of T2DM (HR: 4.69; 95% CI: 2.81–7.84) compared to low levels of serum uric acid and hs-CRP. These findings suggest that the combination of high serum uric acid and hs-CRP levels was significantly associated with an elevated incidence of T2DM; however, their synergistic effects were not observed in middle-aged and elderly Korean adults.

Association between serum uric acid and arterial stiffness in a large-aged 40-70 years old population.

Arterial stiffness (AS), measured by arterial stiffness index (ASI), is a determinant in cardiovascular (CV) diseases. A high serum uric acid (SUA) level is a known risk factor for CV disease. The authors investigated the relationship between SUA and ASI in the middle‐age UK Biobank population study. AS was defined as ASI > 10 m/s. A cross‐sectional study was conducted from 126 663 participants. Participants were divided into four quartiles according to SUA levels and sex. Sex multivariate analyses were performed with adjustment for confounding factors. The average ASI for overall participants was 9.3 m/s (SD: 2.9); 9.9 m/s (SD: 2.8) for men and 8.7 m/s (SD: 2.9) for women (P < .001). Men presented higher SUA rate (351.3 mmol/L (SD:67.9)) than women (270.7 mmol/L (SD:64.4)), P < .001. In men multivariate analysis, SUA remained a determinant of AS, with an increase in the strength of the association between the quartiles, Q4 versus Q1, OR = 1.10 [1.05–1.16], P < .001, Q3 versus Q1, OR = 1.09 [1.04–1.14], P < .001 but not between Q2 and Q1 (P = .136). In women, SUA remained significant for AS, with an increase in the strength of the association between the quartiles, Q4 versus Q1, OR = 1.22 [1.15–1.30], P < .001, Q3 versus Q1, OR = 1.13 [1.07–1.19], P < .001 and no difference between Q2 and Q1 (P = .101). When applying continuous SUA values in the multivariate analysis, SUA remained significant (P < .001), with a Youden index value for men = 338.3 mmol/L and for women = 267.3 mmol/L. High SUA levels were associated with AS, suggesting that SUA could be used as a predictor of atherosclerosis.

Effects of secukinumab and adalimumab on serum uric acid level in patients with plaque psoriasis.

Background:Psoriasis is a chronic systemic inflammatory disease, and hyperuricemia is a common comorbidity in patients with psoriasis. However, there are limited reports on the relationship between serum uric acid levels and biological treatment efficacy. The purposes of this study were to compare the differences in serum uric acid levels between patients with psoriasis and healthy controls and analyze the risk of hyperuricemia.Methods:A total of 196 patients with psoriasis and 191 age- and sex-matched healthy controls were enrolled in this retrospective cohort study. One hundred and twenty-seven patients with severe psoriasis were treated with biologics. Sixty-eight patients received adalimumab, and 59 patients received secukinumab. Serum uric acid levels were measured at baseline, week 24, and week 48 of treatment.Results:Patients with psoriasis had higher serum uric acid levels than healthy controls (6.4 ± 1.7 mg/dL vs. 5.7 ± 1.5 mg/dL, P < 0.001). Hyperuricemia was found in 33.7% (66/196) of patients with psoriasis, which was significantly higher than that in healthy controls (13.1% [25/191], P < 0.001). Serum uric acid levels and hyperuricemia were not related to the severity of psoriasis (P > 0.05). No significant changes in serum uric acid levels and hyperuricemia were observed following adalimumab treatment (P > 0.05). The serum uric acid level in patients treated with secukinumab was 6.7 ± 1.6 mg/dL at week 24, which was not statistically different from that at baseline (6.6 ± 1.4 mg/dL, P = 0.885). Serum uric acid levels were significantly decreased at week 48 (6.3 ± 1.5 mg/dL vs. 6.6 ± 1.4 mg/dL, P = 0.007) in patients treated with secukinumab. Secukinumab had no significant effect on hyperuricemia either (P > 0.05).Conclusions:The serum uric acid levels and prevalence of hyperuricemia in patients with psoriasis were significantly higher than those in healthy controls. Secukinumab treatment for 48 weeks successfully decreased serum uric acid levels in patients with psoriasis, whereas adalimumab had no significant effect on serum uric acid levels.

ROLE OF SERUM URIC ACID LEVELS AND CRP IN THE EXISTENCE OF ATRIAL FIBRILLATION IN HYPERTENSIVE PATIENTS

Objective: The inflammatory effect of the serum uric acid and C-reactive protein (CRP) is evident, as well as the role and significance, of inflammation in the presence of atrial fibrillation. The aim of this study was to investigate a possible association between the serum uric acid levels with the existence of atrial fibrillation in hypertensive patients and the possible role of CRP in this status. Design and method: We studied 1196 hypertensive patients (45,1% female), treated or newly diagnosed untreated, of mean age: 63,1 ± 13,3 years, without any known cardiovascular disease and with mean office systolic/diastolic arterial blood pressure (S/DBPo): 142,1 ± 19.3/86.5 ± 12,6 mmHg, mean office heart rate (HRo): 73,7 ± 10,7 bpm, average body mass index (BMI): 28.5 ± 5,8 kg/m2and average waist circumference (WC) 96.1 ± 12.9 cm The levels of serum uric acid (SUA), C-reactive protein (CRP), urea, creatinine,were recorded. eGFR was calculated according Cockcroft-Gault Equation and the atrial fibrillation (AF) status was recorded. The study population was separated in two groups, according the existence or not of any evidence for AF Group A: with PAF or PEAF Group B: without AF By using the ANOVA statistic method we registered the SUA and CRP values in both groups. Using Pearson correlation method we correlated SUA with CRP serum levels. Results: Table 1: Differences of serum uric acid and CRP levels between group A and group B Table 2: Correlation between serum uric acid levels with C-reactive protein levels SUA: serum uric acid CRP: C-reactive protein Conclusions: In hypertensive patients treated or not, the presence of PAF or PEAF was associated with significantly higher serum uric acid levels and CRP levels, while a significant positive correlation exists between SUA and CRP levels in this population. possibly indicating their importance in the inflammatory status of hypertensive patients with atrial fibrillation.

ASSOCIATION OF SERUM URIC ACID LEVELS AND ATHEROMATOSIS OF CAROTID ARTERIES IN HYPERTENSIVE PATIENTS

Objective: The aim of this study was to investigate a possible association between the serum uric acid levels with the atheromatosis of the carotid arteries of hypertensive patients and the possible role of fibrinogen in this status. Design and method: We studied 1296 hypertensive patients (45,2% female), treated or newly diagnosed untreated, of mean age: 60,2 ± 5,3 years, without any known cardiovascular disease and with mean office systolic/diastolic arterial blood pressure (S/DBPo): 145,9 ± 12.6/89.7 ± 5,3 mmHg, mean office heart rate (HRo): 74,3 ± 9,9 bpm, average body mass index (BMI): 28.3 ± 5,3 kg/m2and average waist circumference (WC) 96.1 ± 12.9 cm. The levels of serum uric acid (SUA), fibrinogen, urea and creatinine, were recorded. eGFR was calculated according Cockcroft-Gault Equation. All studied patients underwent triplex –Doppler ultrasound of carotids and intima -media thickness was measured (IMT) and the presence or not of atheromatous plaque was investigated. The study population was separated in two groups, according the IMT value and the existence or not of atheromatous plaque. Group A: IMT &gt; 0.9 mm or/and existence of atheromatous plaque Group B: IMT &lt; 0.9 mm and without any atheromatous plaque (t-test between the two groups p &lt; = 0.001). By using the ANOVA statistic method we registered the SUA levels values in both groups as well as fibrinogen levels. Using Pearson correlation method we correlated SUA with fibrinogen serum levels Results: Table 1: Differences of serum uric acid levels between group A and group B Table 2. Correlation between serum uric acid levels with fibrinogen levels SUA: serum uric acid Conclusions: In hypertensive patients treated or not, the existence of increased thickness or atheromatous plaques in carotids was associated with significantly higher serum uric acid levels and fibrinogen levels, possibly indicating their importance in the atheromatous status of hypertensive patients while a significant positive correlation exists between SUA and fibrinogen levels in this population

Examining an Association of Single Nucleotide Polymorphisms with Hyperuricemia in Chinese Flight Attendants.

BackgroundBoth genetic and environmental factors strongly affect serum uric acid (SUA) concentrations. The incidence of hyperuricemia tends to be younger in the Chinese population. In particular, we have found a high prevalence of hyperuricemia among Chinese flight attendants, aged from 20 to 40, in our survey. This study aims to evaluate whether there is an association between gene polymorphisms and hyperuricemia among Chinese flight attendants.MethodsA total of 532 flight attendants with high and normal serum uric acid levels were recruited. Allele-specific polymerase chain reaction (AS-PCR) was performed using blood samples of enrolled subjects.ResultsPrevious studies have reported single nucleotide polymorphisms (SNPs) that are tightly associated with uric acid levels. Among them, six SNPs that are strongly associated with SUA or gout in Asians, for instance ABCG2 (rs2231142, rs72552713 and rs2231137), GCKR (rs780094), SLC2A9 (rs1014290) and SLC17A1 (rs1183201), were selected for AS-PCR analyses. We found that SNPs such as ABCG2 rs2231142, GCKR rs780094 and SLC2A9 rs1014290 are strongly associated with hyperuricemia in male flight attendants, and SLC2A9 rs1014290 among female flight attendants.ConclusionOur study provides evidences of an association between SNPs and hyperuricemia in the Chinese flight attendants, and highlights the significance of improving diagnostics and prevention of disease development in uric acid metabolism disorders and gout using these SNPs.

Serum uric acid and diabetic peripheral neuropathy: a double-edged sword

Background and objectivesResearch suggests that diabetic peripheral neuropathy (DPN) is related to high serum uric acid (SUA) level, although its correlation with low SUA level has not been reported. Here, diabetic patients with hyperuricemia were excluded, and the correlation between low SUA level and DPN was explored.Subjects and methodsThis prospective observational clinical study enrolled 525 type 2 diabetes mellitus (T2DM) patients without hyperuricemia, who were divided into the diabetes with symptomatic neuropathy (150 cases), diabetes with asymptomatic neuropathy (125 cases) and diabetes with no neuropathy (250 cases) groups.ResultsThe SUA slightly decreased in subjects with asymptomatic DPN compared with those with no neuropathy and greatly decreased in subjects with symptomatic DPN compared with those without (P < 0.001). The association of the SUA with diabetic neuropathy was independent of the hyperglycemic state and other potential confounders (odds ratio 0.985 [0.981–0.988], P < 0.001). The SUA was closely correlated with the means of motor/sensory nerve amplitude and CV (all P < 0.001). The optimal cut-off point for SUA to distinguish patients with diabetic neuropathy from those without was 324 umol/L, with a sensitivity of 76.0% and a specificity of 79.2% (AUC = 0.806).ConclusionsThe low SUA level is closely associated with DPN. Future studies are warranted to clarify the relationship.

Hyperuricemia Associated with Low Skeletal Muscle in the Middle-Aged and Elderly Population in China.

Previous studies have presented inconsistent results on the relationship between serum uric acid and skeletal muscle mass (SMM). We aimed to explore whether a higher serum uric acid level was associated with low SMM in the Chinese population. We performed a cross-sectional analysis of 6595 subjects aged 45 years or older. They were tested for fasting blood glucose, total cholesterol, triglycerides, high-density lipoprotein-cholesterol, low-density lipoprotein-cholesterol, uric acid, blood urea nitrogen, creatinine, and estimated glomerular filtration rate. SMM was accessed by dual-energy x-ray absorptiometry using two approaches: weight-adjusted appendicular skeletal muscle mass (ASM)% and ASM/BMI (body mass index (kg/m2)). Low SMM was defined as a cut-off point of ASM/BMI<0.789 for men and<0.512 for women. Compared with their normal group, patients with hyperuricemia had lower ASM% (29.33±2.33 vs 30.03±2.34 for males and 24.71±1.99 vs 25.19±2.07 for females, P<0.01) and ASM/BMI (0.83±0.10 vs 0.85±0.10 for male and 0.60±0.07 vs 0.62±0.07 for female), with a higher prevalence of the associated low SMM in both sexes (35.2 vs 26.5% for male and 10.5 vs 5.9% for female, P<0.01). Pearson analysis showed that ASM% and ASM/BMI were negatively correlated with SUA (male: ASM/BMI, r=-0.097, ASM%, r=-0.146; female: ASM/BMI, r=-0.151, ASM%, r=-0.157; all P<0.001). Logistic regression analysis showed a positive association of hyperuricemia with adjusted risk of low SMM association. In a middle-aged and elderly Chinese population, hyperuricemia is independently and positively associated with low SMM and can vary by age and gender.