Objective: To explore the correlation between BMI and gut microbiota of college students in Inner Mongolia,and to provide a reference basis for revealing the relationship between intestinal flora and obesity. Methods: Totally 88 college students from Inner Mongolia Medical University were enrolled, Height and weight were measured,and the feces samples were collected. The bacterial metagenome was extracted from dry feces samples for the concentration detection in per gram of dry feces,expressed as μg/μL. Correlation between BMI and metagenomics concentration of gut microbiota was statistically analyzed. Meanwhile,the metagenomics concentration of gut microbiota in different BMI groups was compared with each other. Results: There was a negative correlation between BMI and the metagenomics concentration of gut microbiota(r=-0.27,P<0.05). Significant difference in the concentration of gut microflora was observed between the normal group and the obesity group,the normal group and the overweight/obesity group(F=3.62,P<0.05). Among the female volunteers,there were significant differences between normal group and overweight group,between normal group and obesity group(F=1.87,P<0.05). No significant differences in metagenomics concentration of gut microbiota were found in different BMI groups(F=0.60, P>0.05). Conclusion There is a correlation between BMI and gut microbiota of college students in Inner Mongolia，the concentration of gut microflora metagenome in overweight and obese people decreased significantly.

Objective:To investigate the effect of clinical nursing pathway in prevention of contrast induced nephropathy in percutaneous coronary intervention patients.Methods:A total of 118 cases of coronary heart disease patients who had undergo percutaneous coronary intervention in hospital from May 2018 to May 2019 were randomly divided into the intervention group ( n=59) and the control group ( n=59). Participants in the control group received routine nursing, while the intervention group carried out clinical nursing pathway nursing method. The renal index such as serum creatinine, blood urea nitrogen, urine β 2 microglobulin, N-acetyl-beta-D-glucosidase (NAG) were compared before and after intervention between two groups, the incidence of CIN were also compared. Meanwhile, the psychology status and sleep quality was assessed by self-rating anxiety scale (SAS), self-rating depression scale (SDS) and Pittsburgh sleep quality index (PSQI), respectively. Results:The 3 rd day after the operation, serum creatinine, serum urea nitrogen, urine β 2 microglobulin, NAG in the intervention group and control group were (81.06±15.60) μmol/L, (9.43 ± 2.73) mmol/L, (256.87 ± 18.99) μg/L, (19.56 ± 2.44) U/L and (87.87 ± 19.60) μmol/L, (10.55 ± 2.18) mmol/L, (270.45 ± 40.85) μg/L, (20.60 ± 2.13) U/L, respectively. The levels of serum creatinine, serum urea nitrogen, urine β 2 microglobulin, NAG were significantly increased in the intervention group compared to the control group ( t=2.087-2.464, P<0.05). The incidence of CIN in the intervention group were 3.4% (2/59) and 13.6% (8/59) in the control group, the differences had statistical significance ( χ2=3.933, P<0.05). In addition, the scores of SAS, SDS and sleep quality, sleep time, sleep duration, daytime function and total PSQI score were (44.71 ± 8.20), (41.36 ± 6.52), (0.78 ± 0.11), (1.02 ± 0.15), (1.20 ± 0.19), (0.97 ± 0.27), (6.42 ± 0.54), those index were (48.85 ± 6.52), (46.49 ± 8.29), (1.03 ± 0.21), (1.23 ± 0.28), (1.44 ± 0.30), (1.30 ± 0.28), (7.79 ± 0.69), the differences had statistical significance ( t=3.033-12.016, P<0.05). Conclusion:Clinical nursing pathway can improve renal function, reduce the incidence of contrast-induced nephropathy, and improve psychological status and sleep quality of percutaneous coronary intervention patients.

Objective A HPLC fingerprint method of Alpiniae Oxyphyllae Fructus(AOF)before and after salt-processing was established,to compare the differences of chemical components between raw and processed AOF combined with chemical pattern recognition.Methods HPLC method was used to establish the fingerprint of raw and salt-processed AOF.Principal component analysis(PCA)and orthogonal partial least squares discriminant analysis(OPLS-DA)were applied to explore the different components of raw and salt-processed AOF in different batches.Results Totally 30 and 32 common peaks in the HPLC fingerprint from the raw and salt-processed AOF were detected,respectively.And 8 of them were identified by comparison with the standards.They were peak X2(5-hydroxymethylfurfural),peak 1(protocatechuic acid),peak 2(protocatechualdehyde),peak 4(epicatechin),peak 21(chrysin),peak 22(kaempferide),peak 25(tectochrysin)and peak 26(nootkatone).The results of PCA and OPLS-DA showed that raw and salt-processed AOF can be grouped into two categories.A total of 12 components,which were considered as differential markers of raw and salt-processed AOF,were screened by method of variable importance in projection(VIP).The 12 components were peak X1,peak 26(nootkatone),peak 16,peak 3,peak X2(5-hydroxymethylfurfural),peak 25(tectochrysin),peak 15,peak 12,peak 8,peak 10,peak 17 and peak 20.Conclusion The combination of HPLC fingerprint and chemical pattern recognition can be used to analyze the quality differences of AOF before and after salt-processing.

Objective:To investigate the association between serum bone turnover marker osteocalcin and the distal symmetric poly neuropathy(DSPN) in male diabetic patients.Methods:Clinical data from 370 male diabetic patients who admitted to Zhongshan Hospital, Fudan University from January 2020 to November 2021 were collected. These patients were grouped into tertiles by serum osteocalcin level: T1 group(osteocalcin<9.2 ng/mL, n=123), T2 group(osteocalcin 9.2-13 ng/mL, n=122), and T3 group(osteocalcin≥13 ng/mL, n=125). The percentage ratios of DSPN were compared among these groups. Using logistic regression model, the adjusted odds ratio ( OR) for DSPN was calculated. Results:There were 50(40.7%), 29(23.8%), 49(39.2%) patients with DSPN in T1, T2, and T3 group respectively. The ratio of patients with DSPN in osteocalcin T2 group were lower than that in the T1 and T3 groups. Further logistic regression showed a 133.9%( OR=2.339, 95% CI 1.097-4.988, P=0.028) and a 134.2%( OR= 2.342, 95% CI 1.040-5.275, P=0.039) increased risk for DSPN in the T1 and T3 group respectively compared with the T2 group, even after adjusted for age, diabetic duration, HbA 1C, diabetic complications, β cross-linked C-telopeptide of type Ⅰ collagen(CTXβ), 25-hydoxy vitamin D(25-OHD), bone mineral density, and treatment. Conclusions:The serum levels of bone turnover marker osteocalcin were associated with the occurrence of DSPN in male diabetic patients, a moderate level of bone turnover(the serum osteocalcin level of between 9.2 and 13 ng/mL for instance) might be protective for male diabetic patients from DSPN.

Objective The objective of this study was to investigate the proliferation,autophagy and the potential mechanism of Ubiquitin-like with PHD and ring finger domains 1(UHRF1)in lung adenocarcinoma cells. Methods The expression of UHRF1 in lung adenocarcinoma tissues was determined by the bioinformatics website(TCGA). The expression of UHRF1 in lung adenocarci-noma cell lines(PC-9,A549 and H1299)and human bronchial epithelial cells(16HBE)was detected by qRT-PCR and Western blot. After transfection of UHRF1-shRNA,CCK-8,clone formation and ki67 were performed to detect the changes in the prolifera-tive capacity of lung adenocarcinoma A549 cells. Western blot was used to detect the changes of autophagy-associated proteins(LC3-I/II and Beclin-1)and proliferation-related proteins(CDK6,Rb and PCNA). Transmission electron microscopy was used to ob-serve the effect of UHRF1 on autophagosomes in A549 cells. Results The expression of UHRF1 in lung adenocarcinoma tissues was significantly higher than that in adjacent tissues. Compared with normal bronchial epithelial 16HBE cells,the mRNA and protein levels of UHRF1 in lung adenocarcinoma A549 and H1299 cells were significantly increased. In addition,CCK-8 assay and colony forma-tion experiments showed that silencing UHRF1 reduced the growth of A549 cells. Ki-67 immunofluorescence staining showed that the proliferation ability of A549 cells after knocking out UHRF1 was significantly lower than that in the normal control group. Further-more,knockdown of UHRF1 resulted in an increased expression of CKD6 and PCNA proteins in comparison with the control-siRNA group. The expression of Rb protein was down-regulated in the UHRF1-siRNA group. Silencing UHRF1 increased the ratio of LC3-II/LC3-I, induced up -regulation of Beclin -1 expression and promoted the formation of autophagic bodies in A549 cells. Conclusion UHRF1 is highly expressed in lung adenocarcinoma,and silencing UHRF1 can inhibit proliferation. This effect may be regulated by promoting autophagy.

Objective In clinical cerebral perfusion CT examination, repeated scanning the region of interest in the cine mode increases the radiation dose of the patients, while decreasing the radiation dose by lowering the scanning current results in poor image quality and affects the clinical diagnosis. We propose a penalized weighted least-square (PWLS) method for recovering the projection data to improve the quality of low-dose cerebral perfusion CT imaged. This method incorporates the statistical distribution characteristics of brain perfusion CT projection data and uses the statistical properties of the projection data for modeling. The PWLS method was used to recover the data, and the Gauss-Seidel (GS) method was employed for iterative solving. Adaptive weighting is introduced between the original projection data and the projection data after PWLS restoration. The experimental results on the clinical data demonstrated that the PWLS-based sinogram restoration method improved noise reduction and artifact suppression as compared with the conventional noise reduction methods, and better retained the edges and details to generate better cerebral perfusion maps.

OBJECTIVE To observe the clinical efficacy of Yangyin Jiedu Decoction in the prevention and treatment of acute ra-diation-induced oral mucositis(RTOM).METHODS A total of 80 inpatients who were diagnosed with head and neck tumors by pathological examination and received radiotherapy in the Department of Radiotherapy,Affiliated Hospital of Nanjing University of Chi-nese Medicine from November 2021 to September 2023 were selected and randomly divided into an observation group and a control group with 40 cases in each group.The control group was given mouthwash treatment from the onset of RTOM symptoms until the symp-toms disappeared;the observation group was given Yangyin Jiedu Decoction from the first day of radiotherapy on the basis of the treat-ment of the control group until the end of radiotherapy.During the treatment,the onset time,duration and incidence of grade Ⅱ-ⅣRTOM in the two groups were observed;the pain numerical rating scale(NRS)score,Karnofsky performance status(KPS)score,body mass index(BMI)changes were evaluated;and the levels of serum inflammatory factors[C-reactive protein(CRP),interleukin 6(IL-6),interleukin 1β(IL-1β),tumor necrosis factor α(TNF-α)]were detected.RESULTS After radiotherapy,RTOM ap-peared in both groups to varying degrees.The incidence of grade Ⅱ-Ⅳ RTOM,the onset time,duration and NRS score of RTOM in the observation group were significantly better than those in the control group(P<0.05,P<0.01).After radiotherapy,the levels of se-rum CRP,IL-6,IL-1β and TNF-α in the observation group were lower than those in the control group(P<0.05,P<0.01).After radiotherapy and 1 month of follow-up,the KPS score and BMI in the observation group were higher than those in the control group(P<0.05,P<0.01).CONCLUSION Yangyin Jiedu Decoction can decrease the incidence and severity of RTOM in patients with head and neck tumors,shorten its duration,improve the quality of life of patients,downregulate the level of inflammatory cytokines,and has a preventive effect on RTOM caused by radiotherapy in patients with head and neck tumors.

Objective In clinical cerebral perfusion CT examination, repeated scanning the region of interest in the cine mode increases the radiation dose of the patients, while decreasing the radiation dose by lowering the scanning current results in poor image quality and affects the clinical diagnosis. We propose a penalized weighted least-square (PWLS) method for recovering the projection data to improve the quality of low-dose cerebral perfusion CT imaged. This method incorporates the statistical distribution characteristics of brain perfusion CT projection data and uses the statistical properties of the projection data for modeling. The PWLS method was used to recover the data, and the Gauss-Seidel (GS) method was employed for iterative solving. Adaptive weighting is introduced between the original projection data and the projection data after PWLS restoration. The experimental results on the clinical data demonstrated that the PWLS-based sinogram restoration method improved noise reduction and artifact suppression as compared with the conventional noise reduction methods, and better retained the edges and details to generate better cerebral perfusion maps.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.