Objective　 To study the mechanism of delaying aging process under optimal stress . Methods　 Kunming mice swam at the 18℃ water temperature for 15min everyday based upon the model of aging mice induced by D-galactose .After six weeks continuously , the ability of memory and learning , the contents of SOD and MDA were measured, at the same time ,the mitochondria membranous fluidity ,MDA's contents in mitochondria and the activity of ATPase in hippocampus were also determined.Results　 In the aging mice, a significant reduction of learning and memory ability was observed, the contents of SOD decreased , but MDA contents increased markedly, we also found a obvious declining at the ATPase activity and the fluidity of mitochondria membrane . But the optimal swimming stress could effectually antagonize the above-mentioned changes . Conclusions　 The optimal swimming stress could delay the aging process by regulating the balance between the oxidant system and the antioxidant system.

To study the use of data mining techniques in analyzing the syndrome discipline of generalized anxiety disorder (GAD).

Abstract Formaldehyde has been widely employed to immobilize clinical tissue specimens, inactivate toxins and viruses in biomedical fields. Formaldehyde can react with active groups in bio-molecules such as proteins, resulting in protein cross-linking, inactivation, and immobilization. By using several standard peptides and tryptic peptides from matrix protein of influenza virus as experimental models, we studied the chemical modifications of peptides and proteins with formaldehyde by matrix-assisted laser desorption ionization time-of-flight mass spectrometry and nano-electrospray quadruple time-of-flight tandem mass spectrometry. The reaction between formaldehyde and peptides was performed under the same conditions as those during inactivation of virus (4℃, 0. 025% Formalin (V/V), 37% formaldehyde solution (w/w), and 72 h). The results indicated that under above conditions, formaldehyde could react with amino group of N-terminus of standard peptide to generate a methylol adduct, which was further condensed into an imine to generate+12 Da product. Besides, formaldehyde could react with side chain of two amino acids such as arginine and lysine, yielding +12 Da product respectively. The analysis of the reaction between formaldehyde and tryptic peptides from matrix protein of influenza virus showed that +24 Da products could be detected in most peptides due to combinational contribution from N-terminus of peptide (+12 Da ) and side chain of C-terminal arginine or lysine (+12 Da) . Moreover, a +36 Da product was detected for a peptide with miss-cut site. The results indicated that low-concentration formaldehyde primarily reacted with amino group on N-termini of peptides and proteins, as well as the side chains of arginine and lysine residues. The present study suggested an effective mass spectrometry-based method for analyzing the reaction between low-concentration formaldehyde and peptides and proteins, thus provided strategies for interpretation for the mass spectra of reaction products.

Interferon stimulated gene 15 kDa protein (ISG15) is the first ubiquitin-like protein identified, which plays vital roles in a variety of fields including viral infection and immunological regulation. In this study, liquid chromatography-tandem mass spectrometry was used to analyze ISG15-modified proteins in A549 cells in response to infection by influenza virus, which was enriched by immunoprecipitation. A total of 22 cellular host proteins were identified in A549 cells infected by influenza virus, including ubiquitin-like ISG15 protein, cyclin-T1, heat shock protein 71 kDa, caldesmon, eukaryotic translation initiation factor, and so on. Besides, non-structural protein (NS1) from influenza virus was also identified. Among the 22 host proteins identified, 6 proteins were also identified in the control non-infected A549 cells, including annexin A1, fructose-bisphosphate aldolase A, ATP synthase subunit g, enolase, actin, and tubulin. Bioinformatics analysis revealed that the identified ISG15-modified host proteins induced by influenza virus infection could be classified into 9 protein classes: chaperone, oxidoreductase, enzyme modulator, transferase, nucleic acid binding, transcription factor, kinase, cytoskeletal protein, and structural protein. This study provided a specific and effective tool for analyzing ISG15-modified proteins in proteome level.

Objective To investigate the intervention effects ofYinao Jieyu Prescription on the behaviors and damages in hippocampal CA1 area of the rats with post-stroke depression (PSD).Methods Totally 168 SPF male SD rats were randomly divided into normal group, sham-operation group, stroke group, PSD group, Western medicine group and TCM group. There were 24 rats in the normal group and sham-operation group, and 30 rats in the other groups. Rats in the normal group received no intervention. Rats in the sham-operation group received no suture. Rats in the stroke group were given middle cerebral artery occlusion operation and normally fed after operation. Rats in the PSD group, Western medicinal group and TCM group were made into PSD models by chronic immobilization stress for one week and individual battery to the end. At the inception of modeling, Western medicine group received fluoxetine hydrochloride for gavage; TCM group receivedYinao Jieyu Prescription for gavage; other groups received distilled water for gavage, once a day. At the end of week 2, 4, and 8, the morphology of the hippocampal CA1 area in each rat was observed by microscope after HE stained.Results Except for the week 2, at the same time point, the behavior scores of the rats in the TCM group were higher than those in the PSD group. At the same time point, the CA1 region of the hippocampus in the TCM group was more complete than the PSD group, and the cells were arranged neatly and in normal morphology.ConclusionYinao JieyuPrescription can improve the symptoms of PSD rats, and has protective effects on hippocampal CA1 area.

Objective:To evaluate the clinical efficacy of Jianpi Bushen Zhixie Recipe combined with conventional western medicine therapy in the treatment of diabetic diarrhea patients with spleen and kidney yang-deficiency syndrome.Methods:According to the random number table method, 62 patients with diabetic diarrhea with spleen and kidney yang-deficiency syndrome from June 2019 to June 2021 in Shunyi Hospital of Beijing Traditional Chinese Medicine Hospital, who met the inclusion criteria, were divided into two groups, with 31 in each group. The control group was treated with standardized hypoglycemic and mecobalamin treatment, while the treatment group was treated with Jianpi Bushen Zhixie Recipe on the basis of the control group. Both groups were treated for 2 weeks and followed up for 2 weeks. Before and after treatment, TCM syndrome scores and Bristol Stool Form Scale (BSFS) scores were performed before and after treatment. The Health Related Quality of Life Scale (SF-36) was used to evaluate the quality of life of patients. The number of bowel movements and adverse reactions during treatment were recorded before and after treatment, and followed up for 2 weeks to observe the disease recurrence rate.Results:The total effective rate was 93.55% (29/31) in the treatment group and 74.19% (23/31) in the control group, with a statistically significant difference between both groups ( χ2=5.44, P=0.020). After treatment, the number of bowel movements in the treatment group [(1.02±0.23) times/d vs. (2.35±0.45) times/d, t=14.65] was significantly lower than that of the control group ( P<0.01); the BSFS scores (1.93±0.43 vs. 3.23±0.43, t=11.87) and TCM syndrome score (0.93±0.25 vs. 1.95±0.36, t=12.96) in the treatment group were significantly lower than those in the control group ( P<0.01); the SF-36 score (92.32±2.99 vs. 86.23±3.12, t=7.85) in the treatment group was significantly higher than that of the control group ( P<0.01). No gastrointestinal adverse events were found in both groups during treatment. During the follow-up period, there were 4 cases (4/23) of recurrence in the control group after treatment, and no recurrence in the treatment group. There was a statistically significant difference in the recurrence rate between the two groups ( χ2=4.28, P=0.039). Conclusion:The Jianpi Bushen Zhixie Recipe combined with conventional western medicine can improve symptoms and quality of life of patients with diabetic diarrhea with spleen and kidney yang-deficiency syndrome, reduce adverse reactions and recurrence rate.

Objective To study the value of ultrasound in operation for traumatic brain injury (TBI) in simulation field hospitals where computed tomography (CT) equipment is unavailable.Methods The wartime conditions were simulated, and the patients at age of 18-60 years were randomly selected.According to the principles of medical ethics, all patients received CT scanning.Two neurosur-geons from the field hospital who did not know the result of CT examination cooperated with another two neurosurgeons who got the results of the CT examination to determine whether operation should be ap-plied.Forty-five patients who needed emergency craniotomy were finally selected.The operations were performed by two neurosurgeons from the field hospital, with real-time ultrasound monitoring.The results of ultrasound were compared with that of CT scanning.Results A total of 64 lesions were found by ul-trasound , and 60 of which should be treated by operation.In the meantime, 82 lesions were found by CT scanning, 64 of which should be treated operatively.Epidural hematoma and subdural hematoma had high ultrasound detection rate, followed by intracerebral hematoma, subdural effusion and brain contusion.The overall detection rate of ultrasound was 87.1%.Conclusion Ultrasound plays an important role in correctly finding the focus so as to reduce blind operation and avoid omission of the focus in field hospi-tals, where CT equipment is usually unavailable.

Objective:The purpose of this study was to investigate the expression and role of N-myc downstream regulatory gene 2 (NDRG2) in radiation resistance of bladder cancer cells.Methods:T24 cells were cultured in vitro and irradiated with different doses of X-ray (0, 2, 4, 8, 10 and 20 Gy). The best dose of X-ray was selected for subsequent treatment. The radioresistant BCa cell line T24/R was established. The cytotoxicity of T24/R cells was detected by counting kit-8 (CCK-8) method. The proliferation and invasion ability of T24/R cells and T24 cells were detected by flow cytometry and transwell, respectively. Western blot was used to detect the expression of epithelial mesenchymal transition (EMT) related proteins. The survival rate of T24/R group (control group) and T24/R-NDRG 2 group was detected, and the migration ability of T24/R-NDRG 2 cells was detected after 2 Gy treatment. Results:The cell viability was inhibited significantly when the dose of X-ray was ≥2 Gy X-ray, so 2 Gy X-ray irradiation was chosen as the best condition for BCa cytotoxicity and T24/R radiation resistance cell line was successfully established; Apoptosis test showed that the number of S-phase cells was increased in T24/R group, and the proportion of S-phase cells in T24/R vs T24 was (26.49±4.5)% vs (14±2.6)% ( P<0.05); Transwell test showed that T24/R cells showed stronger migration ability than control group ( P<0.05), but there was no significant difference in EMT related protein expression between the two groups ( P>0.05). Overexpression of NDRG2 can significantly decreased the activity and migration ability of radiation-resistant T24/R cells ( P<0.05) when the radiation dose was gradually increasing in both groups. Conclusions:The radiation resistance of BCa cells is one of the causes of local tumor recurrence. Up-regulation of NDRG2 expression can inhibit the radiation resistance of T24 cells, so it can be used as a candidate for treatment of radiation-resistant BCa patients.

Objective To explore the effect and mechanism of Shenqi Jieyu Formula(SQJYF)on depression and anxiety-like behavior in adult offspring rats after maternal separation(MS).This was done by observing the levels of metabolites in the hippocampus and prefrontal cortex of the Papez circuit through magnetic resonance spectroscopy(MRS).Methods Twenty-four Sprague-Dawley rats at 16 days of pregnancy were divided into the normal,model,SQJYF,and fluoxetine groups using the random number table method,with six rats per group.MS was performed 4 h a day from the first to the 21st day afterbirth.Starting from the 15th day,the corresponding medications(SQJYF group:12.5 g/kg,fluxetine group:2.33 mg/kg)were administered to mother rats once a day for 7 consecutive days.Normal breastfeeding was performed during the gavage.The offspring rats were weaned on the 22nd day.According to the experimental grouping of mother rats,one male and one female offspring rat of each mother rat were randomly selected using the random number table method,with six rats per group.They were divided into normal,model,SQJYF,and fluoxetine female and male rat groups,respectively.After 8 weeks of feeding,the offspring rats in each group were subjected to forced swimming test(FST),the sucrose water consumption test,and open field tests(OFT),and the elevated plus maze(EPM)test was conducted.The relative values of N-acetyl-aspartate(NAA),choline(Cho),glutamic acid(Glu),myo-inositol(mI),and creatine(Cr)in the hippocampus and prefrontal cortex were detected using MRS.Results Compared with that of the normal female and male rat groups,the weight of the rats in the model group was decreased as well as sucrose water consumption and the horizontal and vertical scores of OFT,whereas the immobility time of FST increased.Compared with the normal female and male rat group,the NAA/Cr and Glu/Cr values in the bilateral hippocampus and prefrontal cortex of the female and male rats in the model group decreased(all P＜0.01).The proportion of rats entering the open arm and open arm residence time of the model female rat group in the EPM test decreased,whereas the Cho/Cr value of the right hippocampus of the female rats in the model group increased(P＜0.05).Compared with the model female and male rat group,the weight of the rats in the SQJYF and fluoxetine groups increased,the immobility time of FST decreased,but the sucrose water consumption and the horizontal and vertical OFT scores increased(P＜0.01).The proportion of rats entering the open arm and open arm residence time in the EPM increased in the SQJYF and fluoxetine female rat groups compared to those of the model female rat group(P＜0.01).Compared with the model female rat group,the NAA/Cr and Glu/Cr values in the bilateral hippocampus and prefrontal cortex of female rats in the SQJYF and fluoxetine groups increased.The NAA/Cr and Glu/Cr values in the right hippocampus and prefrontal cortex of male rats in the SQJYF and fluoxetine groups were higher than those in the model group(P＜0.05),whereas the Cho/Cr value in the right hippocampus of female and male rats in the SQJYF and fluoxetine groups decreased(P＜0.05).Conclusion MS in early life can lead to depression and anxiety-like behavior in adult offspring.However,SQJYF may exert antidepressant and anti-anxiety effects by regulating the metabolite levels in related brain regions of the Papez circuit.

Objective To explore the effect and mechanism of Shenqi Jieyu Formula(SQJYF)on depression and anxiety-like behavior in adult offspring rats after maternal separation(MS).This was done by observing the levels of metabolites in the hippocampus and prefrontal cortex of the Papez circuit through magnetic resonance spectroscopy(MRS).Methods Twenty-four Sprague-Dawley rats at 16 days of pregnancy were divided into the normal,model,SQJYF,and fluoxetine groups using the random number table method,with six rats per group.MS was performed 4 h a day from the first to the 21st day afterbirth.Starting from the 15th day,the corresponding medications(SQJYF group:12.5 g/kg,fluxetine group:2.33 mg/kg)were administered to mother rats once a day for 7 consecutive days.Normal breastfeeding was performed during the gavage.The offspring rats were weaned on the 22nd day.According to the experimental grouping of mother rats,one male and one female offspring rat of each mother rat were randomly selected using the random number table method,with six rats per group.They were divided into normal,model,SQJYF,and fluoxetine female and male rat groups,respectively.After 8 weeks of feeding,the offspring rats in each group were subjected to forced swimming test(FST),the sucrose water consumption test,and open field tests(OFT),and the elevated plus maze(EPM)test was conducted.The relative values of N-acetyl-aspartate(NAA),choline(Cho),glutamic acid(Glu),myo-inositol(mI),and creatine(Cr)in the hippocampus and prefrontal cortex were detected using MRS.Results Compared with that of the normal female and male rat groups,the weight of the rats in the model group was decreased as well as sucrose water consumption and the horizontal and vertical scores of OFT,whereas the immobility time of FST increased.Compared with the normal female and male rat group,the NAA/Cr and Glu/Cr values in the bilateral hippocampus and prefrontal cortex of the female and male rats in the model group decreased(all P＜0.01).The proportion of rats entering the open arm and open arm residence time of the model female rat group in the EPM test decreased,whereas the Cho/Cr value of the right hippocampus of the female rats in the model group increased(P＜0.05).Compared with the model female and male rat group,the weight of the rats in the SQJYF and fluoxetine groups increased,the immobility time of FST decreased,but the sucrose water consumption and the horizontal and vertical OFT scores increased(P＜0.01).The proportion of rats entering the open arm and open arm residence time in the EPM increased in the SQJYF and fluoxetine female rat groups compared to those of the model female rat group(P＜0.01).Compared with the model female rat group,the NAA/Cr and Glu/Cr values in the bilateral hippocampus and prefrontal cortex of female rats in the SQJYF and fluoxetine groups increased.The NAA/Cr and Glu/Cr values in the right hippocampus and prefrontal cortex of male rats in the SQJYF and fluoxetine groups were higher than those in the model group(P＜0.05),whereas the Cho/Cr value in the right hippocampus of female and male rats in the SQJYF and fluoxetine groups decreased(P＜0.05).Conclusion MS in early life can lead to depression and anxiety-like behavior in adult offspring.However,SQJYF may exert antidepressant and anti-anxiety effects by regulating the metabolite levels in related brain regions of the Papez circuit.