Objective To discuss the manifestations of MRI of enlarged iliopsoas bursa.Methods MRI features of enlarged iliopsoas buras were studied retrospectively proved by aspiration of synovial fluid under ultrasound guidance or surgical operation-pathology or clinical followed up and with typical MRI findings in 13 cases were analysed retrospectively.Results 13 enlarged iliopsoas bursas all located at the level of or part of the acetabulum sections in only one side(right side in 5 and left side in 8).The largest cyst was 7.0 cm in diameter.All of them appeared as round,oval,upside-down water drop-like or irregular multilocular cystic shadow and located posterolateral to the external iliac blood vessels and or femoral blood vessels,medial to iliopsoas muscle(tendon),and anterior to hip joint capsule.The cysts were hypo-or iso-intensity on T1WI and water-like high signal intensity on T2WI and markedly higher signal intensity on STIR,it was difficult to identify the cystic wall on plain scans.5 cases underwent contrast-enhanced MR scan,the cystic wall had linear slight to moderate homogeneous enhancement in 3,no enhancement in one and irregular multilocular enhancement in one who was with simple purulent synovitis.2 cases were simple synovitis,11 cases accompanied by hip joint disease.Conclusion MRI is of important value in diagnosing the enlarged iliopsoas bursa.

Objective To investigate the clinical characteristics in nonalcoholic steatohepatitis (NASH),to provide the basis for the early clinical diagnosis.Methods 200 cases of non-alcoholic fatty liver disease(NAFLD) were divided into NAFL group(115 cases) and NASH group(85 cases).Age,gender,body mass index,blood pressure,clinical symptoms,accompany illnesses,biochemical and image index in the two groups were analyzed and compared retrospectively.Results Asthenia,accounted for 40％,which was the most common gastrointestinal symptom of NASH group.and abdominal distension,anorexia,nausea and vomiting,liver area pain and liver were all involved.There were no significant differences in mainly gastrointestinal symptoms between patients with NASH and NAFL group(P ＞ 0.05),but no symptoms incidence of the two group were higher (44.7％ vs 49.2％ ％ P ＞ 0.05) ;the incidence of obesity,hyperlipidemia,type 2 diabetes,hypertension in NASH group were significantly different compared with NAFL(45.9％ vs 20％,41.2％ vs 22.3％,28.2％ vs 15.6％ respectively P ＜ 0.05) ; In NASH group,BMI,fasting glucose(FPG),2hPPG,serum ferritin,hyaluronic acid,Ⅳ collageninsulin resistance index (HOWA-IR)increased significantly compared with NAFL[(28.68 ± 0.92)vs (22.21 ± 0.43),(9.63 ± 0.64)mmol/L vs (4.92 ± 0.78)mmol/L,(12.96 ±0.28) mmol/L vs (7.04 ±0.13) mmol/L,(243.56 ±7.95) ng/mL vs (140.03 ± 6.80)ng/mL,(130.26 ±9.i6)ng/mL vs (74.85 ±6.54)ng/mL,(130.56 ±8.16)ng/mL vs (72.68 ±7.24) ng/mL,(5.36±0.45) vs (2.63 ±0.12),respectively P＜0.05)].Conclusion Patients with NASH had no obvious gastroenterology symptoms.Obesity,type 2 diabetes,hypertension are more with NASH,and there may be multiple metabolic disorders.

Objective To investigate the effect of diet and gene on blood-fat trait of the individual.Method One hundred and twenty mice were fed with high fat emulsion for 4 w,then the genotypes of LPL were analyzed by PCR-SSCP to investigate their effect on blood-fat traits and some organ performance of mice.Result After fed with high fat emulsion for 4 w,98 mice suffered from hyperlipidemia,while 22 mice did not.And a G/A mutation was found in 220 targeted fragments we amplified at 14355 site,and association analysis showed that the mice with BB genotype had higher TC、TG、LDL、H/W、L/W level than those of the mice with AA genotype(P

Aim To investigate whether necroptosis mediates chemical hypoxia-induced HT22 mouse hippocampal cell injury and inflammation.Methods HT22 hippocampal cells were exposed to cobalt chloride (CoCl2) to establish a model of the chemical hypoxia-induced injury and inflammation.The expression level of RIP3 (an index of necroptosis) was determined by Western blot.Cell counter kit-8 (CCK-8) assay was used to test the cell viability.Lactate dehydrogenase (LDH) activity in the culture medium was measured with commercial kits.Mitochondrial membrane potential (MMP) was examined by rhodamine123 staining followed by photofluorography.The intracellular level of reactive oxygen species (ROS) was detected by 2', 7'-dichlorfluorescein-diacetate (DCFH-DA) staining followed by photofluorography.The secretion levels of interleukin-1β (IL-1β) and tumor necrosis factor-a (TNF-α) were measured by ELISA.Results Treatment of HT22 hippocampal cells with 600 μmol·L-1 CoCl2 for 36 h markedly induced cytotoxicity, leading to a decrease in cell viability to (52.0±2.65) % , indicating that chemical hypoxia-induced cellular injury model was successfully set up.Besides, CoCl2 induced considerable injuries and inflammation, evidenced by increases in LDH activity, ROS production, MMP loss, as well as the secretion levels of IL-1β and TNF-α.Co-treatment of the cells with 40~100 μmol·L-1 Nec-1 (a specific inhibitor of necroptosis) and CoCl2 markedly attenuated the decrease in viability induced by CoCl2, reaching the best anti-cytotoxicity inhibitory effect at 80 μmol·L-1.Meanwhile, the co-treatment with 80 μmol·L-1 Nec-1 blocked the above injuries and inflammatory response induced by CoCl2.In addition, treatment of HT22 hippocampal cells for 6~48 h up-regulated the expression of RIP3, and Nec-1 alleviated the up-regulation of RIP3 expression level induced by CoCl2.Conclusion Necroptosis mediates chemical hypoxia-induced HT22 hippocampal cell injury and inflammation.

Objective:To explore the association between glutamyl transpeptidase (GGT) trajectories and new-onset metabolic syndrome to provide insights for the prevention and treatment of metabolic syndrome.Methods:A total of 3 209 subjects who met the inclusion criteria were enrolled in the study cohort of physical examination population. The GGT levels before follow-up were classified by R LCTMtools program into 3 GGT trajectory groups: low-stable group, medium-stable group and high-stable group. Cox proportional hazards regression model was used to analyze the correlation between different GGT trajectories and new-onset metabolic syndrome.Results:At the end of follow-up in 2020, the cumulative incidence of metabolic syndrome was 7.0%, and the incidence of metabolic syndrome in the low-stable group, medium-stable group and high-stable group were 3.9%, 11.4%, and 15.0%, respectively, showing a growth trend ( P<0.001). After adjusting for multiple confounding factors by Cox proportional hazards regression model, the risk of metabolic syndrome in medium-stable group and high-stable group increased in the total population. The hazard ratios (95% CI)for the high stable group in males and the medium-stable group in females were 1.67(1.07-2.60) and 3.29(1.14-9.53), respectively, compared with their respective low-stable group. Conclusion:Elevated longitudinal trajectory of GGT is a risk factor for new-onset metabolic syndrome, the risk of metabolic syndrome in the total population increased with the increase of long-term GGT level. It is recommended to maintain the long-term level of GGT at about 28 U/L in males and 14 U/L in females, respectively, to achieve the goal of early prevention of metabolic syndrome.

Objective To explore the characteristics of alexithymia and interoception in patients with panic disorder(PD) and its relationship. Methods Thirty-seven patients with PD and 45 healthy con-trols who met the diagnostic criteria of DSM-Ⅳ were selected. Toronto Alexithymia Scale ( TAS) and state-trait anxiety inventory ( STAI) were used to assess the characteristics of alexithymia and anxiety symptoms respectively. The heartbeat perception levels were tested by the Mental Tracking Paradigm. Results The de-tection rate of alexithymia in patients with panic disorder was 37. 83% (14/37),but the rate in the normal control group was only 4. 44%(2/45),and the difference was statistically significant (χ2=14. 42,P<0. 05). The total score of TAS (55. 11±10. 99),factor Ⅰ (20. 62±6. 78) and factor Ⅱ (14. 68±3. 70) in the PD group were higher than those in the control group (42. 93± 9. 25,12. 82± 4. 99,11. 42±3. 04; F=20. 72, 31. 08,15. 31,P<0. 01). The levels of the heartbeat perception were higher in the PD group than that in the control group (0. 75±0. 15,0. 58±0. 19;t=4. 13,P<0. 05). In PD group,the score of STAI were positively correlated with TAS total score and factor Ⅰ and Ⅱ scores( r=0. 57,0. 61,0. 47;r=0. 54,0. 62,0. 39,P<0. 05). There was no significant correlation between the scores of STAI and the level of interoception. The mediating effect of interoception level on alexithymia and state anxiety was not significant while the mediating effect on alexithymia and trait anxiety was also not significant. Conclusions The alexithymia detection rate and interoception sensitivity in patients with panic disorder were higher than those of healthy people. There may be interaction between alexithymia and anxiety symptoms. Interoception may be a clinical feature of panic disorder.

The United States is the country with the most pilot practices in value-based healthcare payment reform, and value-based purchasing (VBP) is one of its pilot projects. The authors introduced the basic situation and implementation effects of the pilot projects of VBP payment reform in the United States from the hospital and physician levels respectively, and analyzed the causes for their unsatisfactory implementation effects. Then, the authors proposed its enlightenments for China from such aspects as the construction of value-based medical payment index system, implementation of value-based medical payment reform, and management costs, to provide reference for the construction of high-quality value-based medical service system in China.

The pilot project for alternative payment models was originated from the implementation of the 2010 Affordable Care Act in the United States, which aimed to establish a new payment mode to replace the traditional payment based on service fees, thereby achieving the goals of ensuring healthcare quality, reducing healthcare costs, and improving healthcare equity. The pilot projects of alternative payment models included two types: accountable care organizations and bundled payments for care improvement. The authors introduced their profile and implementation effects, analyzed the causes of the current implementation effects, and then proposed enlightenments for the value-based medical payment reform in China, with the aim of providing reference for the construction of a high-quality value based medical service system in China.

Objective To explore the relationship between dietary fiber intake and hypertension in different populations. Methods Dietary fiber intake was calculated using the data from 2015—2016 National Health and Nutrition Examination Survey (NHANES) database by combining dietary data collected by the 24-hour dietary recall method with the USDA Food and Nutritional Database. Hypertension was defined based on blood pressure values obtained through questionnaires and mobile center measurements. Logistic regression models were used to analyze the relationship between dietary fiber intake and hypertension in individuals aged ≥18 years. Generalized additive model (GAM) and smoothed curve fitting were used to analyze the dose-response relationship between them. Results Compared with the low dietary fiber intake (＜17.75 g/d) group , in the total population, the prevalence risk of hypertension was 18% lower in the high dietary fiber intake (≥18.85 g/d) group (OR＝0.82, 95%CI 0.68-0.98). In the male population, the risk of hypertension in the high dietary fiber intake group decreased by 23% (OR＝0.77, 95%CI 0.60-0.98). In the female population, when dietary fiber intake was ＞28.05 g/d, the risk of hypertension decreased by 6% (OR＝0.94, 95%CI 0.89-0.99) for 1 g/d increase in dietary fiber intake. In the population aged ＞60 years, the risk of hypertension decreased by 31% in the high dietary fiber intake group (OR＝0.69, 95%CI 0.48-0.99). In the population aged ≤45 years, the risk of hypertension decreased by 6% (OR＝0.94, 95%CI 0.88-0.99) for 1 g/d increase when dietary fiber intake ＞34.5 g/d. Conclusions High dietary fiber intake is associated with a decreased risk of developing hypertension, and a reasonable increase in dietary fiber intake can help reduce the incidence of hypertension.

ObjectiveThis research focused on examining the distinctive characteristics of nutrient intake and dietary patterns among long-lived elderly individuals. Additionally， the study was aimed to explore the specific dietary components that may impact the skeletal muscle mass in this particular group. MethodsThis study was conducted in the Chongming area of Shanghai， China. A total of 206 long-lived elderly individuals aged 90 or above were recruited. The 3-day 24-hour dietary recall method was used to collect dietary information and general demographic data through face-to-face interviews with professional nutritionists. The skeletal muscle mass index（SMI） was measured by bioelectrical impedance analysis（BIA）， and low skeletal muscle mass was diagnosed based on the 2019 Asian Working Group for Sarcopenia criteria. T-test analysis， chi-square test， and logistic regression were used to analyze the relationship between dietary nutrient intake and skeletal muscle mass. ResultsIn terms of food intake categories， compared with the long-lived elderly people with normal muscle mass， the intake of cereals containing miscellaneous beans and vegetables in the long-lived elderly people with low muscle mass was significantly lower（P<0.05）. In terms of the nutrient intake， compared with the long-lived elderly people with normal muscle mass， the intake of total energy， carbohydrate， dietary fiber， vitamin D， folic acid， phosphorus， potassium， magnesium， iron， and manganese in the long-lived elderly people with low muscle mass was significantly lower（P<0.05）. After continuous adjustment for the covariates， multivariate logistic regression analysis found that the intake levels of folic acid and dietary fiber were important factors influencing skeletal muscle mass， Individuals with lower intake levels of folic acid and dietary fiber are at a higher risk of low muscle mass in long-lived elderly individuals ［OR_{folic acid T1}， _{dietary fiber T1} （95%CI）： 2.90 （1.11‒7.61）； 4.09 （1.53‒10.91）］. ConclusionThe consumption of cereals that include a variety of beans and vegetables was noticeably lower in the long-lived elderly individuals with lower muscle mass when compared to those with normal muscle mass. Furthermore， low levels of folic acid and dietary fiber intake are associated with an increased risk of low skeletal muscle mass.