Objectives To explore the correlation between the heteroplasmy level of mt5178C＞A mutation in ND2 gene of mitochondria DNA and essential hypertension(EH)in middle-aged and elderly adults.Methods EH patients and normotensive controls were recruited consecutively from 2014-2015 from general population.Demographics,clinical characteristics and blood leukocytes were collected.The mt5178C＞A mutation heteroplasmy level was quantified by the rapid and sensitive realtime polymerase chain reaction(PCR) method for each participant.Results A total of 108 EH patients and 109 controls were recruited.The mt5178C＞A mutation heteroplasmy level was(42 ± 11％)in EH patients and (54± 13)％ in control subjects,with statistically significant difference between the two groups(P＜0.01).Using a two-step cluster analysis,the mt5178C＞A heteroplasmy level exceeding 44％ was associated with a decreased risk of EH(OR=0.18,95％,CI:0.10-0.31,P＜0.01).Correlation analysis showed mt5178C＞ A heteroplasmy level was significantly negatively correlated with both systolic blood pressure (r =-0.38,P＜ 0.001) and diastolic blood pressure (r =-0.49,P＜ 0.01)in 109 controls.Logistic regression analysis demonstrated that in single-factor analysis,mt5178C ＞ A heteroplasmy level (OR =0.82,95 ％ CI:0.77 0.87,P ＜ 0.01) was protective factor for EH,however,BMI(OR=1.30,95％CI:1.12-1.45,P＜0.01),total cholesterol(OR=2.13,95％CI:1.39-3.28,P=0.00),triglyceride(OR=7.62,95％CI:3.45-16.84,P＜0.01)and blood urea nitrogen(OR =1.35,95 ％ CI,P =0.03) were risk factors for EH.And a multiple logistic regression analysis showed that mt5178C＞ A heteroplasmy level (OR =0.83,95 ％ CI:0.78-0.89,P＜ 0.01) was independent protective factor for E H,however,only total cholesterol (OR =2.17,95 ％ CI:1.58-2.98,P =0.02) and low density lipoprotein cholesterol (OR =0.06,95％ CI:0.01-0.83,P =0.04) were independent risk factors for EH,and the P at critical 0.05 value.Conclusions Mitochondrial ND2 gene 5178C＞ A mutation heteroplasmy level exerts protective role against EH in middle-aged and elderly adults in Chinese population.

Flocculent gene FLO1 and its truncated form FLO1c with complete deletion of repeat unit C were expressed in a non-flocculent industrial strain Saccharomyces cerevisiae CE6 to generate recombinant flocculent strains 6-AF1 and 6-AF1c respectively. Both strains of 6-AF1 and 6-AF1c displayed strong flocculation and better cell growth than the control strain CE6-V carrying the empty vector under acetic acid stress. Moreover, the flocculent strains converted glucose to ethanol at much higher rates than the control strain CE6-V under acetic acid stress. In the presence of 0.6% (V/V) acetic acid, the average ethanol production rates of 6-AF1 and 6-AF1c were 1.56 and 1.62 times of that of strain CE6-V, while the ethanol production rates of 6-AF1 and 6-AF1c were 1.21 and 1.78 times of that of strain CE6-V under 1.0% acetic acid stress. Results in this study indicate that acetic acid tolerance and fermentation performance of industrial S. cerevisiae under acetic acid stress can be improved largely by flocculation endowed by expression of flocculent genes, especially FLO1c.
Acetic Acid ; chemistry ; Ethanol ; Fermentation ; Flocculation ; Glucose ; Industrial Microbiology ; Mannose-Binding Lectins ; genetics ; Saccharomyces cerevisiae ; genetics ; metabolism ; Saccharomyces cerevisiae Proteins ; genetics

Objective:To measure the bioelectrical impedance around the dental implants with bone defects.Methods:Bilateral maxillar second premolar were extracted in 6 native mongrel dogs,implants were placed immediately with or without bone defect of corresponding alveolar bene.Impedance value(IV)between the implant and contralateral mouth corner was measured by LCR TEST-ER.IVs were compared and analyzed by SPSS.Results:IVs of bone defect group were bigger than that of control group(P <0.05), in largger defect group were smaller than that in smaller group(P <0.05).Conclusion:Bioelectrical impedance can be used as an evaluation of peri-implant bone defects and the size of bone defect.

Objective: To investigate the stress and stress distribution generated on each component of implant prosthodontic system and surrounding cortical bone when different diameters of screw-access hole (SAH) were prepared on molar crown. Methods: A fimite element(FE) model of partial mandible without first molar was set up, and an Bego implant was insert into it. A total of 5 models of the crown were computer-simulated by varying the diameter (Φ = 0-4 mm) of the SAH. The loading forces were 200 N axially (0°) and 100 N obliquely (45°) respectively on occlusive surface. The FE analysis was performed by computer. Results: Φ ≤3 mm: stress on occlusal surface of crown was almost unchanged and mainly distributed in the loading area. Φ = 4 mm, stress appeared an obvious rise and reached the maximum, the stress concentration under vertical load was changed to the hole margin. In vertical loading, screw could remain at a relatively low stress level when diameter did not exceed 1 mm. No changes on other components was observed. Conclusion: SAH diameter of 1 mm is recommended when a cement-and screw-retained crown is used in posterior region.

Background: Subclinical hypothyroidism (SCH) is the most common thyroid dysfunction, and its relationship with blood pressure (BP) has been controversial. The aim of the study was to analyze the association between SCH and newly-diagnosed hypertension. Methods: Based on data from the Thyroid disease, Iodine nutrition and Diabetes Epidemiology (TIDE) study, 49,433 euthyroid individuals and 7,719 SCH patients aged ≥18 years were enrolled. Patients with a history of hypertension or thyroid disease were excluded. SCH was determined by manufacturer reference range. Overall hypertension and stage 1 and 2 hypertension were diagnosed according to the guidelines issued by the American College of Cardiology/American Heart Association in 2017. Results: The prevalence of overall hypertension (48.7%), including stage 1 (28.9%) and 2 (19.8%) hypertension, increased significantly in SCH patients compared with euthyroid subjects. With elevated serum thyroid stimulating hormone (TSH) level, the hypertension prevalence also increased significantly from the euthyroid to different SCH subgroups, which was more profound in females or subjects aged <65 years. The age- and sex-specific regression analysis further demonstrated the same trends in the general population and in the 1:1 propensity matched population. Similarly, several BP components (i.e., systolic, diastolic, and mean arterial BP) were positively associated with TSH elevation, and regression analysis also confirmed that all BP components were closely related with SCH in female subjects aged <65 years. Conclusion The prevalence of hypertension increases for patients with SCH. SCH tends to be associated with hypertension and BP components in females younger than 65 years.

Background: Subclinical hypothyroidism (SCH) is the most common thyroid dysfunction, and its relationship with blood pressure (BP) has been controversial. The aim of the study was to analyze the association between SCH and newly-diagnosed hypertension. Methods: Based on data from the Thyroid disease, Iodine nutrition and Diabetes Epidemiology (TIDE) study, 49,433 euthyroid individuals and 7,719 SCH patients aged ≥18 years were enrolled. Patients with a history of hypertension or thyroid disease were excluded. SCH was determined by manufacturer reference range. Overall hypertension and stage 1 and 2 hypertension were diagnosed according to the guidelines issued by the American College of Cardiology/American Heart Association in 2017. Results: The prevalence of overall hypertension (48.7%), including stage 1 (28.9%) and 2 (19.8%) hypertension, increased significantly in SCH patients compared with euthyroid subjects. With elevated serum thyroid stimulating hormone (TSH) level, the hypertension prevalence also increased significantly from the euthyroid to different SCH subgroups, which was more profound in females or subjects aged <65 years. The age- and sex-specific regression analysis further demonstrated the same trends in the general population and in the 1:1 propensity matched population. Similarly, several BP components (i.e., systolic, diastolic, and mean arterial BP) were positively associated with TSH elevation, and regression analysis also confirmed that all BP components were closely related with SCH in female subjects aged <65 years. Conclusion The prevalence of hypertension increases for patients with SCH. SCH tends to be associated with hypertension and BP components in females younger than 65 years.

The latest epidemiological data suggests that the situation of adult diabetes in China is severe, and metabolic diseases have become significant chronic illnesses that have a serious impact on public health and social development. After more than six years of practice, the National Metabolic Management Center(MMC) has developed distinctive approaches to manage metabolic patients and has achieved a series of positive outcomes, continuously advancing the standardized diagnosis and treatment model. In order to further improve the efficiency, based on the first edition, the second edition guideline was composed by incorporating experience of the past six years in conjunction with the latest international and domestic guidelines.