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排序方式: 共有1299条查询结果,搜索用时 15 毫秒
1.
《Saudi Dental Journal》2022,34(6):503-508
BackgroundThis study aimed to identify whether healthy older adults are at a high risk of osteoporosis based on the association between the T-score values of bone mineral density (BMD) and three panoramic indices.Materials and methodsAll participants (50–64 years old) underwent calcaneal quantitative ultrasound (QUS) bone densitometry. In total, 371 panoramic images were included in the analysis. The mandibular cortical width (MCW), mandibular cortical index (MCI), and panoramic mandibular index (PMI) were the three parameters assessed. The data were examined using one-way analysis of variance or Kruskal–Wallis H and post hoc tests. Spearman’s rho was used to measure correlation coefficients.ResultsT-score distributions in the normal, osteopenia, and osteoporosis categories were 80 (21.6%), 236 (63.6%), and 55 (14.8%), respectively. T-scores were significantly related to age, MCW, PMI, and MCI (p < 0.001). Participants with osteopenia and a risk of progression to osteoporosis had an average MCW value of < 3.38 mm, a PMI of < 0.31, and an MCI class 2 and 3 distribution in 211 (56.9%) participants. The highest to lowest correlation coefficients with a significant relationship to the T-score were for age (r = -0.844), MCI (r = 0.456), MCW (r = 0.359), sex (r = 0.354), and PMI value (r = 0.292).ConclusionsThis study found that healthy older people with Class 3 MCI, an MCW < 3 mm, and a PMI ratio < 0.3 had a significant association with lower BMD T-scores on QUS and were at higher risk of osteoporosis. 相似文献
2.
Vian Ahmed Wasta Esmail Mohammed Omer Mohammed Marwan S.M. Al-Nimer 《Arab Journal Of Gastroenterology》2021,22(1):1-5
Background and study aimsPatients with non-alcoholic fatty liver disease (NAFLD) exhibit features of metabolic syndrome, including a high body mass index, central obesity, high blood pressure, and abnormal lipid profile values. Orlistat, an intestinal lipase enzyme inhibitor, improves insulin resistance. We aimed to investigate the effects of short-term therapy with orlistat on the components of metabolic syndrome associated with NAFLD and explore its effect on liver fibrosis scores.Patients and methodsAn open-label placebo-controlled clinical study using orlistat for 12 weeks was carried out on 50 patients with NAFLD. They were divided into a placebo group (Group I) and an orlistat treatment group (120 mg per day, Group II). The diagnosis of NAFLD was made by ultrasonography and laboratory investigations. Anthropometric and blood pressure measurements and hepatic liver enzymes, fasting lipids, and blood glucose levels were determined before and after treatment. Lipid indices including cholesterol (Chol-I), triglyceride (TG-I), triglyceride-glucose (TYG-I), and the scores for lipid fibrosis using the NAFLD fibrosis score (NFS) and Fibrosis-4 score (Fib-4) were also determined.ResultsOrlistat significantly improved the anthropometric and metabolic indices (TG-I, TYG-I) and liver enzymes. Orlistat demonstrated a favorable impact on the NAS and Fib-4 scores for liver fibrosis.ConclusionOrlistat improves the components of metabolic syndrome, leading to the improvement of insulin resistance and thereby improves fatty infiltration of the liver. To a lesser extent, orlistat improved the liver fibrosis scores. 相似文献
3.
Bryce Alexander Gary Tse Manuel Martinez-Selles Adrian Baranchuk 《Current Cardiology Reviews》2021,17(1):68
Atrial conduction disorders result from impaired propagation of cardiac impulses from the sinoatrial node through the atrial conduction pathways. Disorders affecting interatrial conduction alter P-wave characteristics on the surface electrocardiogram. A variety of P-wave indices reflecting derangements in atrial conduction have been described and have been associated with an increased risk of atrial fibrillation (AF) and stroke. Interatrial block (IAB) is the most well-known of the different P-wave indices and is important clinically due to its ability to predict patients who are at risk of the development of AF and other supraventricular tachycardias. P-Wave Axis is a measure of the net direction of atrial depolarization and is determined by calculating the net vector of the P-wave electrical activation in the six limb-leads using the hexaxial reference system. It has been associated with stroke and it has been proposed that this variable be added to the existing CHA2DS2-VASc score to create a P2-CHA2DS2-VASc score to improve stroke prediction. P-Terminal Force in V1 is thought to be an epiphenomenon of advanced atrial fibrotic disease and has been shown to be associated with a higher risk of death, cardiac death, and congestive heart failure as well as an increased risk of AF. P-wave Dispersion is defined as the difference between the shortest and longest P-wave duration recorded on multiple concurrent surface ECG leads on a standard 12-lead ECG and has also been associated with the development of AF and AF recurrence. P-wave voltage in lead I (PVL1) is thought to be an electrocardiographic representation of cardiac conductive properties and, therefore, the extent of atrial fibrosis relative to myocardial mass. Reduced PVL1 has been demonstrated to be associated with new-onset AF in patients with coronary artery disease and may be useful for predicting AF. Recently a risk score (the MVP risk score) has been developed using IAB and PVL1 to predict atrial fibrillation and has shown a good predictive ability to determine patients at high risk of developing atrial fibrillation. The MVP risk score is currently undergoing validation in other populations. This section reviews the different P-wave indices in-depth, reflecting atrial conduction abnormalities. 相似文献
4.
目的探讨红细胞体积分布宽度(RDW-CV)在类风湿关节炎(RA)患者临床诊断中的价值。方法选取2020年3月至2021年6月在安徽医科大学附属巢湖医院住院的76例RA患者为研究组;38例非RA关节病患者(强直性脊柱炎,反应性关节炎)为参照组;以及体检中心健康体检者33例为健康对照组。比较三组之间一般资料:红细胞(RBC)、血红蛋白(Hb)、RDW-CV、白细胞(WBC)、中性粒细胞百分比(N%)、淋巴细胞百分比(L%)、中性粒细胞与淋巴细胞比值(N/L)、血小板(PLT)、红细胞沉降率(ESR);同时比较三组免疫学指标:抗环瓜酸肽抗体(抗CCP)、抗链球菌素“O”抗体(ASO)、类风湿因子(RF)、超敏C反应蛋白(hs-CRP)、免疫球蛋白G(IgG)、免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、补体C3(C3)、补体C4(C4)的差异;受试者工作特征(ROC)曲线分析RDW-CV在RA中的诊断效能;通过多元线性回归和Spearman相关分析探讨RDW-CV与其他指标的相关性。结果三组间RBC、Hb水平:研究组低于参照组,且参照组低于对照组,差异均有统计学意义(P<0.05);三组间RDW-CV水平:研究组高于参照组,且参照组高于对照组,差异均有统计学意义(P<0.05);血清抗CCP抗体、ASO水平:研究组高于参照组,差异均有统计学意义(P<0.05);血清C3、C4水平:研究组小于参照组和对照组,差异有统计学意义(P<0.05)。ROC曲线分析显示RDW-CV曲线下面积为0.728(P<0.05),其诊断RA的敏感度和特异度分别为63.20%、78.90%,诊断性能优于CRP和ESR;多元线性回归分析显示RDW-CV与RA病程、ESR、C3相关,回归方程决定系数0.341;相关性分析显示RDW-CV与RA病程正相关(r=0.352,P<0.05),与ESR正相关(r=0.313,P<0.05),与C3负相关(r=-0.232,P<0.05)。结论RDW-CV可作为潜在的炎性指标,对RA诊断和病情判定具有一定的临床应用价值。 相似文献
5.
《Dental materials》2022,38(6):1044-1059
ObjectiveAssess the biological and physicochemical properties of AH Plus, BioRoot RCS and Pulp Canal Sealer (PCS) leachates with and without chlorhexidine (CHX).MethodsThe sealers were studied in no contact and 1-minute contact with CHX. For biological properties (antibacterial activity and cytotoxicity), leachates were formed in saline of freshly mixed, 1-, 7- and 28 days set sealers. The antibacterial properties of sealer leachates were investigated for planktonic and biofilm growth of E. faecalis, S. mutans, S.epidermidis and S.aureus. The 3-(4,5 dimethylthiazolyl-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was used to evaluate murine fibroblast cell viability after exposure to the leachates. The physical properties (water uptake, sorption, solubility, porosity, surface characteristics) of sealers and the pH of the immersion liquid (saline or distilled water) were also assessed over a 28-days period.ResultsCHX improved the antibacterial properties of the sealer leachates and reduced cell viability for all sealer leachates, except for freshly mixed PCS. BioRoot RCS leachates presented the highest antibacterial properties and cell viability with and without CHX contact. PCS was the material most affected by CHX in terms of physical properties, whereas for AH Plus, solubility was increased. CHX did not affect the physical properties of BioRoot RCS, except for solubility that was decreased. CHX contact did not change sealers’ alkalinity in distilled water whereas it increased it for AH Plus and BioRoot RCS in saline.SignificanceCHX improved the antibacterial efficacy of sealer leachates and either compromised or did not affect cell viability. CHX affected to various extent sealers’ physicochemical properties. 相似文献
6.
Egil Henriksen Jonas Selmeryd Pr Hedberg 《Clinical physiology and functional imaging》2019,39(1):85-92
Recent findings suggest that left atrial (LA) function is more strongly related to adverse prognosis than LA volumes. We aimed to evaluate the associations between LA volumes and Doppler filling indices with LA function. Echocardiographic LA volumes (LAVs), mitral valve early (MV‐E) and late (MV‐A) peak flow velocities, and mitral atrioventricular plane tissue‐Doppler early (TD‐e′) and late (TD‐a′) peak velocities were obtained in 320 patients with acute myocardial infarction (AMI) free from atrial fibrillation and more than moderate valvular disease. LA function was estimated as the LA emptying fraction (LAEF), that is 100× (LAVmax‐LAVmin)/LAVmax. LA reservoir volume was calculated as LAVmax‐LAVmin and LA transit volume as LV stroke volume‐reservoir volume. In restricted cubic spline regression analyses with multivariable adjustment, a reduced LAEF was strongly associated with smaller reservoir volume, larger transit volume, LAVmax, LAVpreA and especially LAVmin. MV‐E linearly increased with a lower LAEF, whereas MV‐A decreased but only below LAEF levels of approximately 45%. The resulting E/A ratio showed a sudden increase in LAEF levels below ~45%. Lower TD‐a′ was linearly associated with a lower LAEF. In conclusion, a reduced atrial function was associated with smaller LA reservoir volume, larger LA transit volume, lower TD‐a′, a non‐linear decrease in MV‐A and a non‐linear increase in E/A. Our findings are likely a reflection of the adaptation to sustain LV filling volume and counteracting a rise in pulmonary venous pressure in face of an enhanced LV end‐diastolic pressure. 相似文献
7.
8.
The objective of this study was to complete a comprehensive evaluation of the nutritional composition, physicochemical properties and protein profile of three different whey protein concentrate ingredients enriched in α-lactalbumin (LAC). The LAC ingredients studied were manufactured using different enrichment approaches, namely membrane filtration (LAC-M), selective precipitation (LAC-P) and ion exchange (LAC-IE), and were compared to benchmark whey protein concentrate (WPC) and skim milk powder (SMP) ingredients with unaltered protein profile. The LAC ingredients had heterogeneous chemical composition and protein profile, which depended on the enrichment approach used. Protein profile of LAC ingredients was dominant in α-lactalbumin and therefore higher in tryptophan when compared to the benchmark ingredients. Unlike LAC-M and LAC-IE, LAC-P had a very complex protein profile. The new information provided by this study for these novel added-value whey protein ingredients will support the development of next-generation dairy-based formulated nutritional products. 相似文献
9.
10.
Mostafa Fazeli Mohammad Mohammad-Zadeh Susan Darroudi Zahra Meshkat Alireza Moslem Hamideh Ghazizadeh Saeid Kargozar Gordon Ferns Hamidreza Bahrami-Taghanaki Majid Ghayour-Mobarhan 《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2019,13(3):1779-1784
Pediatrics metabolic syndrome (MetS) may be associated with the risk of development of chronic diseases in adulthood; however, the definition of pediatric MetS is unclear, and may vary with ethnicity. The primary goal of this study was to determine the best anthropometric predictors for pediatric MetS. For this purpose, 988 high school girls were recruited. Anthropometric indices and biochemical parameters were measured using standard procedures. The adapted MetS for pediatrics, including the IDF, NCEP, and two modified-NCEPs (Cook's and DeFerranti's) were used to establish a diagnosis of MetS. Statistical analysis was performed using SPSS and MedCalc softwares. Except for body frame size (r), the values for anthropometric indices were significantly lower in an individual without MetS. Waist to height (WHtR), BMI and hip circumference (HiC) showed the strongest association with the different MetS definitions. For the IDF definition, the highest sensitivity and specificity were observed for HiC (100.0, 85.2) and WHtR (100.0, 84.7); while for the NCEP definition, the r index showed the highest sensitivity (85.0); but low specificity made it inapplicable. For the Cook's definition of MetS, wrist circumference (WrC), HiC, WHtR, BMI and SR had similar sensitivity values with WC (92.9%), and HiC (85.3%) have the highest specificity. WHtR (86.05, 80.5), SR (86.05, 82.7) and HiC (76.7, 87.0) sensitivity and specificity were the best indexes for DeFerranti's criteria. Based on this date, we concluded that HiC and WHtR might be helpful as auxiliary indexes for pediatric MetS definition; however, further studies are required in both genders. 相似文献