Objective:To study the CT and MRI features of xanthogranulomatous cholecystitis (XGC).Methods:Clinical data of 41 patients with XGC admitted to Yueqing Third People's Hospital, Yueqing People's Hospital and Wenzhou Central Hospital from January 1, 2013 to December 30, 2023 were retrospectively analyzed, including 21 males and 20 females, aged 63 (61, 65) years. Data including gender, age, clinical manifestations, CT and MRI features, were recorded.Results:Of the 41 patients, 26 had clinical manifestations of upper abdominal pain accompanied by nausea, vomiting, and fever, and 15 had upper abdominal pain accompanied by jaundice. Forty-one patients had positive percussion pain in liver area, of which 18 had positive Murphy’s sign and 12 had jaundice of the skin and sclera. Among the 25 patients who underwent CT examination, the gallbladder had a longitudinal diameter of 8 (5, 10) cm and a transverse diameter of 4 (3, 6) cm. The thickness of the thickened gallbladder wall was 1.6 (0.4, 1.9) cm. Most cases show diffuse uneven thickening, and a few cases show uniform diffuse or localized thickening. After enhancement, the thickened gallbladder wall can be seen as " sandwich" - or " sandwich cookie" -like enhancement or layered enhancement. Mucosal line is continuous or discontinuous. Eleven cases with low-density nodules between walls showed no enhancement. Among the 16 patients who underwent routine MRI examinations, the gallbladder had a longitudinal diameter of 8 (5, 10) cm and a transverse diameter of 4 (3, 6) cm. The thickness of the thickened gallbladder wall was 1.6 (0.4, 1.9) cm. Most cases show diffuse uneven thickening, and a few cases show uniform diffuse or localized thickening. There were nine cases of multiple small nodules between walls. The thickened gallbladder wall showed heterogeneous signal on T 1-weighted imaging (T 1WI) and T 2-weighted imaging (T 2WI), presenting equal, high, low, or mixed signals. T 1WI showed low signal intensity in reverse phase. Diffusion weighted imaging fat suppression sequence shows multiple small nodules within the wall with high signal intensity. Nine cases of intramural nodules showed high signal intensity on T 1WI in-phase, T 2WI, and T 2WI fat phase, low signal intensity on T 1WI in-phase, and low signal intensity on T 2WI fat suppression sequence. The wall of gallbladder showed " sandwich" - or " sandwich cookie" -like enhancement or layered enhancement. Mucosal line is continuous or discontinuous. Nine cases of intramural nodules showed no enhancement. Conclusions:The CT and MRI features of XGC are diffuse and uneven thickening with nodules between the gallbladder walls in most cases. Nodules with low density on CT plain scan, high signal on T 1WI in-phase, high signal on T 2WI, and low signal on T 1WI out-phase. The thickening of the gallbladder wall after enhancement is characterized by a " sandwich" - or " sandwich cookie" -like enhancement.

Objective Fasting hypometabolism regulation technology has broad application potential in long-term space flight and survival in extreme extraterrestrial environments.In-depth research on the substrate conversion of energy metabolism and the formation of new steady states under fasting hypometabolism will provide theoretical basis and experimental data support for formulating effective prolonged fasting application mode.Methods 30 SD rats were randomly divided into control group and fasting group(fasting for 1,2,3,and 5 days).Blood biochemical examination,qRT-PCR,and western blotting were performed to analyze the body weight,blood biochemistry,and expression changes of genes and proteins related to glucose and lipid metabolism during different fasting periods.Results Prolonged fasting significantly reduced the body weight,blood glucose,and triglyceride levels of rats;increased the blood ketone level,and replaced glucose as the main energy substance in the body.There are temporal and tissue-specific changes as a whole.Hepatic and renal gluconeogenesis play major roles respectively during different fasting periods.As the fasting time prolongs,the level of hepatic gluconeogenesis gradually decreases,the content of FFA in the blood increases,the expression level of genes related to fat synthesis decreases,fatty acid oxidation is enhanced,and the expression level of the key gene HMGCS2 for ketone body generation increases.Conclusion During prolonged fasting,there is a significant conversion of glucose-ketone energy supply substrates,and a new steady state of energy metabolism mainly supplied by ketone bodies is formed within 2-5 days of fasting.The body maintains a low metabolic state by regulating changes in key genes in pathways such as glucose and lipid metabolism.

Objective:To study the CT and MRI features of xanthogranulomatous cholecystitis (XGC).Methods:Clinical data of 41 patients with XGC admitted to Yueqing Third People's Hospital, Yueqing People's Hospital and Wenzhou Central Hospital from January 1, 2013 to December 30, 2023 were retrospectively analyzed, including 21 males and 20 females, aged 63 (61, 65) years. Data including gender, age, clinical manifestations, CT and MRI features, were recorded.Results:Of the 41 patients, 26 had clinical manifestations of upper abdominal pain accompanied by nausea, vomiting, and fever, and 15 had upper abdominal pain accompanied by jaundice. Forty-one patients had positive percussion pain in liver area, of which 18 had positive Murphy’s sign and 12 had jaundice of the skin and sclera. Among the 25 patients who underwent CT examination, the gallbladder had a longitudinal diameter of 8 (5, 10) cm and a transverse diameter of 4 (3, 6) cm. The thickness of the thickened gallbladder wall was 1.6 (0.4, 1.9) cm. Most cases show diffuse uneven thickening, and a few cases show uniform diffuse or localized thickening. After enhancement, the thickened gallbladder wall can be seen as " sandwich" - or " sandwich cookie" -like enhancement or layered enhancement. Mucosal line is continuous or discontinuous. Eleven cases with low-density nodules between walls showed no enhancement. Among the 16 patients who underwent routine MRI examinations, the gallbladder had a longitudinal diameter of 8 (5, 10) cm and a transverse diameter of 4 (3, 6) cm. The thickness of the thickened gallbladder wall was 1.6 (0.4, 1.9) cm. Most cases show diffuse uneven thickening, and a few cases show uniform diffuse or localized thickening. There were nine cases of multiple small nodules between walls. The thickened gallbladder wall showed heterogeneous signal on T 1-weighted imaging (T 1WI) and T 2-weighted imaging (T 2WI), presenting equal, high, low, or mixed signals. T 1WI showed low signal intensity in reverse phase. Diffusion weighted imaging fat suppression sequence shows multiple small nodules within the wall with high signal intensity. Nine cases of intramural nodules showed high signal intensity on T 1WI in-phase, T 2WI, and T 2WI fat phase, low signal intensity on T 1WI in-phase, and low signal intensity on T 2WI fat suppression sequence. The wall of gallbladder showed " sandwich" - or " sandwich cookie" -like enhancement or layered enhancement. Mucosal line is continuous or discontinuous. Nine cases of intramural nodules showed no enhancement. Conclusions:The CT and MRI features of XGC are diffuse and uneven thickening with nodules between the gallbladder walls in most cases. Nodules with low density on CT plain scan, high signal on T 1WI in-phase, high signal on T 2WI, and low signal on T 1WI out-phase. The thickening of the gallbladder wall after enhancement is characterized by a " sandwich" - or " sandwich cookie" -like enhancement.

Objective In the future,during the landing and exploration of near-Earth planets(e.g.,Mars,Jupiter,etc.),astronauts may take the initiative to start fasting to reduce the amount of load;and it is even more likely that astronauts will take the initiative to fast in the process of manned deep-space exploration in the future,or they may enter a dormant low-metabolism state to save the amount of load to enable the spaceship to fly for a longer period,and to locate in a deeper and farther position.The ability of an individual to maintain cognitive ability and respond appropriately over a period in a long-term fasting state is important for survival.Therefore,the present study focused on investigating the effects of 15 days of complete fasting on dual cognitive control function and its neural mechanisms.Methods Twenty-four healthy volunteers were recruited to participate in the fasting experiment.Behavioral and electroencephalographic data from the AX-CPT Task were collected with event-related potentials(ERP)to assess the effects of 15 days of complete fasting on dual cognitive control in 16 volunteers.Results(1)Behavioral outcomes had significant main effects on response time[F(1,15)=99.41,P?

Objective To compare the application of four domestic and foreign qualitative occupational health risk assessment methods for cement dust hazard assessment and explore their applicability, and to find out a method suitable for qualitative occupational health risk assessment of cement dust. Methods The Risk Assessment Method for Occupational Accidents and Diseases of Romania (Romania method)，the Australian Occupational Health and Safety Risk Assessment Method (Australia method)，MES method, and the qualitative method of International Council on Mining & Metals (ICMM) were used to assess the occupational health risk of cement dust exposure posts in seven enterprises of Chongqing. The assessment results were analyzed and compared with Spearman correlation analysis, Mann-Whitney U test and weighted Kappa consistency test after standardizing by risk ratio (RR). Results The RRs of the four methods were all positively correlated with cement dust exposure concentration (the correlation coefficients were all greater than 0.6). The Romania method, the Australia method and the qualitative method of ICMM could identify a risk difference between the key posts and non-key posts. The qualitative method of ICMM was difficult to identify high-risk posts that require priority intervention. The Romania method and Australia method had strong consistency (Kappa=0.608, P＜0.01), but only the Australia method could identify high-risk posts of cement dust. Conclusion In general, the Australia method is relatively better at identifying the risk differences of cement dust hazard in different posts and is more suitable for occupational health risk assessment of cement dust with more accurate assessment results.

With the deepening reform of ideological and political education, Medical Parasitology teaching needs to update the teaching concept, change the teaching ideas, as well as keep trying to combine ideological and political education with the curriculum content closely. In addition to teaching students’ basic knowledge and practical skills, teachers are needed to cultivate their moral literacy and political awareness through course teaching, so as to provide the basis for students’ subsequent adaptations to social environments and jobs. Currently, the study of ideological and political education in Medical Parasitology teaching is still in the exploratory stage. Therefore, colleges and universities need to carry out effective construction of ideological and political education in Medical Parasitology teaching, in order to achieve good teaching outcomes and provide insights into ideological and political education in teaching.

Blueberries are rich in phenolic compounds including anthocyanins which are closely related to biological health functions. The purpose of this study was to investigate the antioxidant activity of blueberry anthocyanins extracted from 'Brightwell' rabbiteye blueberries in mice. After one week of adaptation, C57BL/6J healthy male mice were divided into different groups that were administered with 100, 400, or 800 mg/kg blueberry anthocyanin extract (BAE), and sacrificed at different time points (0.1, 0.5, 1, 2, 4, 8, or 12 h). The plasma, eyeball, intestine, liver, and adipose tissues were collected to compare their antioxidant activity, including total antioxidant capacity (T-AOC), superoxide dismutase (SOD) activity and glutathione-peroxidase (GSH-PX/GPX) content, and the oxidative stress marker malondialdehyde (MDA) level. The results showed that blueberry anthocyanins had positive concentration-dependent antioxidant activity in vivo. The greater the concentration of BAE, the higher the T-AOC value, but the lower the MDA level. The enzyme activity of SOD, the content of GSH-PX, and messenger RNA (mRNA) levels of Cu,Zn-SOD, Mn-SOD, and GPX all confirmed that BAE played an antioxidant role after digestion in mice by improving their antioxidant defense. The in vivo antioxidant activity of BAE indicated that blueberry anthocyanins could be developed into functional foods or nutraceuticals with the aim of preventing or treating oxidative stress-related diseases.
Male ; Mice ; Animals ; Antioxidants/pharmacology* ; Blueberry Plants ; Anthocyanins/pharmacology* ; Mice, Inbred C57BL ; Superoxide Dismutase ; Plant Extracts/pharmacology* ; Superoxide Dismutase-1

tRNA-derived small RNAs (tsRNAs) are novel non-coding RNAs that are involved in the occurrence and progression of diverse diseases. However, their exact presence and function in hepatocellular carcinoma (HCC) remain unclear. Here, differentially expressed tsRNAs in HCC were profiled. A novel tsRNA, tRNA^Gln-TTG derived 5'-tiRNA-Gln, is significantly downregulated, and its expression level is correlated with progression in patients. In HCC cells, 5'-tiRNA-Gln overexpression impaired the proliferation, migration, and invasion in vitro and in vivo, while 5'-tiRNA-Gln knockdown yielded opposite results. 5'-tiRNA-Gln exerted its function by binding eukaryotic initiation factor 4A-I (EIF4A1), which unwinds complex RNA secondary structures during translation initiation, causing the partial inhibition of translation. The suppressed downregulated proteins include ARAF, MEK1/2 and STAT3, causing the impaired signaling pathway related to HCC progression. Furthermore, based on the construction of a mutant 5'-tiRNA-Gln, the sequence of forming intramolecular G-quadruplex structure is crucial for 5'-tiRNA-Gln to strongly bind EIF4A1 and repress translation. Clinically, 5'-tiRNA-Gln expression level is negatively correlated with ARAF, MEK1/2, and STAT3 in HCC tissues. Collectively, these findings reveal that 5'-tiRJNA-Gln interacts with EIF4A1 to reduce related mRNA binding through the intramolecular G-quadruplex structure, and this process partially inhibits translation and HCC progression.
Humans ; Carcinoma, Hepatocellular/pathology* ; Liver Neoplasms/pathology* ; Eukaryotic Initiation Factor-4A/genetics* ; Cell Line ; RNA, Transfer/metabolism* ; RNA ; Cell Proliferation

Objective:To explore the application of expanded polytetrafluoroethylene (ePTFE) as the main support combined with a small amount of ear cartilage in rhinoplasty.Methods:Through a nasal opening approach, the ePTFE was used as a support implant for the nasal dorsum and columella, and unilateral concha cartilage was used as a nasal tip modification graft.Results:This method was applied in 56 cases of rhinoplasty (36 cases of initial nose, 20 cases of silicone augmentation rhinoplasty). The wounds of 55 patients healed at one stage without complications, with satisfactory results (average follow-up of 6 months). In one case, nasal mucosa was damaged early after surgery, and the ePTFE was partially exposed, which healed after debridement and suture.Conclusions:For most primary rhinoplasty and simple repair of the nose, using ePTFE as the main support combined with a small amount of ear cartilage, has the advantages of fewer materials, rapid surgery, mild trauma, and stable postoperative results.

To understand the positive mental health status of medical students, improve their mental health level, and cultivate medical talents with sound personality and all-round development. Starting from the positive psychological health concept of healthy personality orientation, the Mental Health Scale with a Healthy Personality Orientation for College Students was used to conduct a random sampling survey on 600 medical students in a medical college. The results showed that the mental health score of medical students was (90.13±15.01), which was lower than that of national college students, and their difference was statistically significant (P=0.001). Medical students scored significantly lower than national college students in the three dimensions of happiness experience (P<0.001), interpersonal harmony (P=0.003), and goal pursuit (P=0.008). Moreover, there were group differences in the level and structure of mental health among medical students of different genders, grades, majors, and family origins (P<0.05). Universities should adopt targeted educational measures for different groups of medical students to guide them to cultivate positive psychological qualities and promote their physical and mental health development.