Objective Human serum albumin ( HSA) is a kind of plasma protein , which can transport various small molecu-lar substances to the body.A disulfide bond breaking strategy is used to fabricate HSA-curcumin nanoparticles(NPs-CCM) in order to improve the solubility and tumor targeting capability of curcumin . Methods NPs-CCM were fabricated with dithiothreitol as the re-ducing agent .The size and shape of the nanoparticles were observed with high resolution electron microscopy .We explored the change of hydrophobic region during the process of degeneration of albumin , the releasing behavior in the solution and the tumor targeting capa-bility in vivo and vitro of NPs-CCM. Results The diameter of NPs-CCM was about 150 nm.The determination of surface hydropho-bicity showed that ANS fluorescence intensity decreased gradually as the extension of degeneration time , at the time 0 min, 2 min, 5 min and 10 min, ANS relative fluorescence intensity was 5492(5432-5673), 2486(2319-2878), 1998(1904-2317), 1503 (1280-1584) respectively.The hydrophobic region of albumin gradually reduced during the degeneration time .The curcumin re-leased from NPs-CCM amounted to about 50% within 40 h, and the NPs-CCM can be absorbed by tumor cells and accumulation in tumor tissue. Conclusion Albumin can improve the solubility and tumor targeting capability of curcumin , and it has potential clinical application value.

Objective To investigate the correlation between chronic hepatic diseases and small intestinal inflammation.Methods Patients who received capsule endoscopy in The First Affiliated Hospital of Guangdong Pharmaceutical University were divided into groups of liver cirrhosis,non-alcoholic fatty liver disease(NAFLD),chronic hepatitis and non-hepatic disease according to clinic data from August 2011 to August 2015.The severity of small intestinal mucosal inflammation was graded according to Lewis Scoring system and incidence of small intestinal lesions in different groups and Lewis scores were compared.The liver function was also graded with liver noninvasive scoring systems.Then the correlation between liver function damage and small intestinal lesions was investigated.Results A total of 338 cases were enrolled in the study,including 25 cases of liver cirrhosis,47 cases of NAFLD,20 cases of chronic hepaitis and 246 cases of non-hepatic disease.There were 22 (88.0％),36 (76.6％),12 (60.0％) and 78 (31.7％) cases with lesions in small intestine in the four group respectively with significant differences(P＜0.001).Rate of small intestinal villi edema was significantly higher in liver cirrhosis group,NAFLD group,chronic hepatitis group than that in non-hepatic disease group(all P＜0.017).Small intestinal villi edema was found mainly in the upper and one third of middle parts in small intestine (P =0.033).Lewis scores of liver cirrhosis group (190.80±228.42)and NAFLD group(125.38± 191.31) were higher than those of non-hepatic disease group (42.91±97.69,P=0.021,P =0.034).Forns score,FIB-4 score,NAFLD-FS score and Child-Pugh score were positively correlated with Lewis score (correlation coefficient:0.247,0.244,0.223,0.284respectively,all P＜0.001).Conclusion Chronic hepatic diseases such as liver cirrhosis,NAFLD,chronic hepatitis might be risk factors for small intestinal mucosal inflammation,and the severity of chronic hepatic diseases may be positively correlated with that of small intestinal mucosal lesions.

Objective To explore the changes of cell proliferation and differentiation of neural stem cells induced by fasudil treatment,and to primarily study the mechanism in C17.2 mice.Methods C17.2 cells were cultured in vitro; 5,25,50 and 100 μmol/L fasudil were given to the cells,respectively,for 24 h,and cells in the blank control group were given the same volume of culture medium.The changes of cell morphology were observed under a phase-contrast microscope; cell viability and cell necrosis rate were determined by MTT assay and lactate dehydrogenase (LDH) assay,respectively.Western blotting was applied to detect the expression levels of neural markers (nestin,glial fibrillary acidic protein [GFAP],double cortisol [DCX],microtubule-associated protein-2 [MAP-2]),and Notch Ⅰ and Hes 1 proteins in the notch signaling in cells from the 100 μmol/L fasudil treatment group and blank control group.Immunofluorescence staining was used to detect the nestin and GFAP expressions in the C 17.2 cells.Results As compared with that in the blank control group,the cell viability in the 50 and 100 μmol/L fasudil treatment groups was significantly decreased; that in the 100 μmol/L fasudil treatment group was significantly lower than that in 50 μmol/L fasudil treatment group (P＜0.05); LDH assay showed no significant difference of cell necrosis among the five groups (P＜0.05).Western blotting indicated that 100 μmol/L fasudil treatment group had significantly decreased nestin expression,significantly elevated DCX,MAP-2 and GFAP expressions,and statistically decreased expression levels of Notch 1 and Hes 1 as compared with blank control group (P＜0.05).Immunofluorescence staining indicated that the percentage of nestin positive cells was markedly decreased,the percentage of GFAP positive cells was significantly increased in the 100 μmol/L fasudil treatment group as compared with those in the blank control group (P＜0.05).Conclusion Fasudil treatment could inhibit the proliferation of C17.2 cells and promote them differentiate into neuronal and glial cells via decreasing the expression level of Notch signaling.

Objective: To explore the pattern of change of axial length/curvatrue radius ratio (AL/CR) and associated factors in primary and secondary school students in Yunnan, so as to provide scientific basis and prospective guidance for early myopia intervention and control. Methods: A total of 685 students from grades 2 to 3 and grade 7 in 2 cities/counties in Yunnan Province were selected by multi stage stratified random cluster sampling method in 2020. All the participants were followed up twice with questionnaire of myopia related factors, uncorrected distance visual acuity, and refractive parameter measurement from October,2021 and March,2023,respectivelty. The distribution and change of AL/CR in different classes and groups were analyzed, and the influencing factos of AL/CR cumulative progression were explored using generalized linear model. Results: AL/CR ratio in primary school students was (2.95±0.09) at baseline, increased to (2.99±0.11) at the first follow up and (3.04±0.12) at the second follow up. AL/CR ratio in middle school students(3.08±0.13) at baseline, increased to (3.12±0.15) at the first follow up and (3.15±0.14) at the second follow up. The generalized linear model showed that after controlling for environmental factors, ethnicity ( β =-0.017) , cumulative progression of the SE ( β =-0.027) influenced the changes of AL/CR ratio among the primary school students, whereas the changes of AL/CR ratio were associated with baseline AL ( β =-0.005), baseline corneal curvatrue radius ( β =0.032) and cumulative progression of SE( β =-0.035) among middle school students ( P <0.05). Conclusions The AL/CR ratio of primary and secondary school students in Yunnan can be used to judge different refractive status types, but its variation is not only related to SE progression, but also affected by different ethnic groups and baseline ocular biological parameters. so the value of AL/CR application in assessing the progression of myopia needs to be further confirmed.

ABSTRACT:In recent years ,there has been high prevalence of murine typhus in Yunnan Province ,People's Republic of China .A large outbreak of murine typhus occurred in Xishuangbanna Prefecture ,Yunnan Province in 2010 .However ,not all cases were confirmed by laboratory assays ;therefore ,field epidemiologic and laboratory investigations of murine typhus in Xishuangbanna Prefecture were conducted in 2011 .Blood samples were collected from clinical diagnostic cases at the acute and convalescence stages of murine typhus in Xishuangbanna Prefecture ,Yunnan Province ,from June to September of 2011 ,and blood and spleen samples were collected from mice sharing the same habitats as the patients .Immunofluorescence assays were used to test for the presence of IgM and IgG antibodies against Rickettsia typhi in sera from patients and mice .Real‐time PCR was used to detect the groEL gene of R .typhi in blood clots from patients at the acute stage and in spleen tissue from mice .A total of 1 157 clinically diagnosed murine typhus cases occurred in Xishuangbanna Prefecture ,Yunnan Province in 2011 ,with an incidence of 102 .10/100 000 .Of these cases ,80 were investigated by laboratory assays and 74 of 80 patients were confirmed to have murine typhus .The coincidence rate between the clinical diagnosis and laboratory detection was 92 .50% .The positivi‐ty rate for IgG antibodies against R .typhi was 14 .0% (14/100) for Rattus f lavipectus ,while the rate by PCR was 9 .0%(9/100) .That laboratory diagnoses confirmed that the severity of the murine typhus outbreak in Xishuangbanna cannot be ig‐nored .The distribution of host animals transmitting R .typhi underscores this conclusion .

OBJECTIVE:To establish HPLC fingerprint of Zhenqi fuzheng granules. METHODS:HPLC-ELSD method was ad-opted. The determination was performed on Agilent Zorbax Eclipse XDB-C18 column with mobile phase consisted of acetonitrile-wa-ter(gradient elution)at the flow rate of 1.0 mL/min with column temperature of 40 ℃. The detector evaporation temperature was 50℃,and sample size was 10μL. Using specnuezhenide as reference,HPLC chromatograms of 7 batches of Zhenqi fuzheng gran-ules were determined. The identification and similarity evaluation of common peaks were conducted by using the TCM Chromato-graphic Fingerprint Similarity Evaluation System(2004 A edition). RESULTS:There were 13 common peaks in HPLC chromato-grams of 7 batches of samples. After validated,the similarity of 3 batches of samples in HPLC chromatograms of 7 batches of sam-ples were higher than 0.9,which were in good agreement with control fingerprints. The similarity of 4 batches of samples were <0.9,which were poorly same to control fingerprint. CONCLUSIONS:Established fingerprint can provide reference for quality evalu-ation of Zhenqi fuzheng granules.

Objective:By establishing a rat model of experimental autoimmune thyroiditis(EAT), to investigate the effects of different iodine intake on the hippocampal morphology, monoamine neurotransmitters and ethology of the offspring of EAT rats.Methods:A total of 60 female and 20 male Lewis rats with a body weight of 50 - 60 g were selected. Female rats were divided into 4 groups (15 rats in each group) with random number table method according to their body weight: control group (NI group), thyroglobulin group (Tg group), Tg + high iodine Ⅰ group (Tg + HⅠ group), and Tg + high iodine Ⅱ group (Tg + HⅡ group), and the latter three groups were model groups. The contents of iodine in drinking water of the 4 groups were 100 μg/L, 100 μg/L, 20 mg/L and 200 mg/L, respectively. Rats in the model groups were immunized with porcine thyroglobulin (PTg) subcutaneously at multiple sites, and the NI group was injected with normal saline, once every 2 weeks, 3 times in total. The rats in each group were mated in cages according to the ratio of 3 : 1 between female and male. After experiment of the offspring, the urine samples of mother rats were collected within the previous week, urinary iodine concentration was determined by As 3+-Ce 4+ catalytic spectrophotometry; then the mother rats were killed, HE staining was used to observe the changes of thyroid histomorphology and the infiltration of inflammatory cells; serum thyroglobulin antibody (TgAb) and thyroid peroxidase antibody (TPOAb) of mother rats were determined by radioimmunoassay. Brain tissues were collected from 7 days old offspring, hippocampal morphology of 7 days old offspring was observed by toluidine blue staining; the contents of norepinephrine (NE), dopamine (DA) and 5-hydroxytryptamine (5-HT) in brain tissues of 7 days old offspring were measured by enzyme-linked immunosorbent assay (ELISA); 30 and 60 days old offspring were used for water maze-location navigation test and open field test. Results:The levels of urinary iodine increased significantly of mother rats in Tg + HⅠ and Tg + HⅡ groups than that in NI group (median, μg/L: 35 380.18, 236 847.16 vs 221.43, P < 0.05). HE staining showed that the thyroid tissue of mother rats in Tg, Tg + HⅠ and Tg + HⅡ groups had different degrees of destruction and inflammatory cells infiltration, and the degree of destruction and infiltration increased with the increase of iodine intake. Compared with NI group, the contents of TgAb and TPOAb in serum of mother rats in Tg, Tg + HⅠ and Tg + HⅡ groups were significantly increased(2.118 4 ± 0.675 1, 2.103 0 ± 0.714 1, 2.783 6 ± 1.084 3 vs 0.790 1 ± 0.101 0, P < 0.05; 1.015 8 ± 0.252 8, 1.019 5 ± 0.202 0, 0.936 6 ± 0.183 4 vs 0.692 2 ± 0.111 9, P < 0.05), and the content of TgAb in Tg + HⅡ group was significantly higher than that in Tg and Tg + HⅠ groups ( P < 0.05). Compared with NI group, the number of hippocampal neurons decreased and relative damage occurred in Tg, Tg + HⅠ and Tg + HⅡ groups of the offspring. Compared with NI group, the NE contents in brain tissues of the offspring in Tg, Tg + HⅠ and Tg + HⅡ groups decreased (pg/ml: 1 232.01 ± 253.45, 1 197.64 ± 222.46, 1 074.40 ± 366.38 vs 1 733.67 ± 158.12, P < 0.05); there were no significant differences in DA and 5-HT contents in brain tissues of offspring in each group ( P > 0.05). In the water maze-location navigation test, the latency of the Tg + HⅡ group on the 4th day of the 30 days old offspring reaching the platform was significantly longer than that of the NI and Tg groups ( P < 0.05). In the open field test, there was no significant difference in 30 and 60 days old offspring in the latency of moving the original quadrant ( P > 0.05). Conclusions:With the increase of iodine intake, the degrees of thyroid tissue destruction and inflammatory cells infiltration in EAT rats increase, and the levels of TgAb in serum increase significantly. Iodine has certain effects on the hippocampal morphology and the level of monoamine neurotransmitters in the brains of the offspring of EAT rats. The effects of different iodine-induced EAT rats on their offspring's learning, memory and spatial exploration are mainly shown in childhood.

Objective To investigate the status of health knowledge of patients after percutaneous coronary intervention (PCI) and its influencing factors, so as to provide a scientific basis for formulating targeted health education programs. Methods Using a self-designed questionnaire on health cognition after PCI, 433 patients with a history of PCI surgery at a Grade III, Class A hospital between January 2019 and December 2019 were selected as the research subjects to investigate their health cognition and the influencing factors by binary logistic regression analysis. Results The pass rate of health cognition of patients after PCI was 39%, and the total correct rate was 57.5%. The correct rate of drug knowledge and risk factors was the lowest (33.6% and 48.5%, respectively). Binary logistic regression showed that gender, age and cardiac function classification were risk factors for health cognition of patients after PCI, while education level, occupation category and recurrence of discomfort after PCI were protective factors. Conclusion The level of health cognition of patients after PCI is low. Gender, age, education level, occupation category, cardiac function classification and recurrence of discomfort after PCI are independent influencing factors. When implementing health education, medical staff should comprehensively consider the formulation of individualized health education to help.

OBJECTIVE：To establish fingerprint of Paliurus ramosissimus total triterpenes ，and to conduct cluster analysis and principal component analysis ，and to determine the content of the main component paliurusene. METHODS ：HPLC method was adopted. The determination was performed on Agilent PheHex column with mobile phase consisted of methanol- 0.05％ phosphoric acid solution （gradient eluetion ） at the flow rate of 1 mL/min. The detection wavelength was set at 320 nm，and column temperature was 30 ℃. The sample size was 5 μL. Using paliurusene as reference，HPLC fingerprints of 10 batches of P. ramosissimus total triterpenes were drawn. Similarity evaluation was performed by using TCM Chromatographic Fingerprint Similarity Evaluation System （2012 edition），and the common peaks were confirmed. Cluster analysis and principle component analysis were performed by using SPSS 26.0 software. The content of paliurusene was determined by same HPLC method. RESULTS：There were totally 6 common peaks in HPLC fingerprint of 10 batches of P. ramosissimus total triterpenes. The similarity was more than 0.990；one of six common peaks was identified as paliurusene. The results of cluster analysis showed that 10 batches of samples could be clustered into 4 categories，including S 1，S2，S3-S6 and S 7-S10. The results of principal component analysis showed that the accumulative variance contribution rate of primary 2 principal components was 99.430％. Comprehensive score ranking was S 1＞S9＞S8＞S7＞S10＞S2＞S3＞S5＞S6＞S4. The linear range of paliurusene concentration was 33.7-844.0 μg/mL（r＝0.999 9）. RSDs of precision ，reproducibility and stability （24 h）tests were all lower than 2％. Average recovery was 99.75％（RSD＝1.13％，n＝6）. The average contents of paliurusene in 10 batches of P. ramosissimus total triterpenes was 0.576％-0.712％. CONCLUSIONS ：Established HPLC fingerprint and content d etermination method are reliable and stable ， and can be used for the quality control of P. ramosissimus .

BackgroundDue to the COVID-19 pandemic， both teenagers' studies and personal life are critically affected， which has resulted in a variety of mental health problems. In this regard， scholars at home and abroad have carried out a large number of research concerning adolescent mental health， of which there still exists a lack of systematic combing and review. ObjectiveTo understand the status and development trend of research on adolescent mental health during the COVID-19 pandemic at home and abroad， and to grasp the current research hotspots and trends in this field， so as to provide references for relevant research and practice in the post-epidemic era. MethodsOn October 30， 2022， we searched through China Knowledge Network Infrastructure （CNKI） and Web of Science database， and the publishing time of articles to be retrieved was limited between December 1， 2019 and October 30， 2022. Excel and CiteSpace were used to perform visual analysis on these articles in terms of number， author， institution， country and keywords of the articles. ResultsA total of 7 608 articles were included. At home and abroad， the number of papers related to adolescent mental health generally increased at first and then decreased under the pandemic situation. Compared with foreign countries， the connection and cooperation among domestic scholars and institutions was not close enough. The top three countries in the number of English literature published were the United States， Britain and China， and those in intermediary center were Tunis， Cameroon and Anguilla. The parent-child relationship and mental health of teenagers during were much concerned by scholars both at home and abroad. With the passage of time， researchers at home and abroad had shifted their focus from only negative factors to positive factors. ConclusionChinese scholars or institutions need to strengthen more domestic and international exchanges and cooperation. Scholars from different countries can carry out cross-cultural study on research topics of common concern， and continue to explore the positive psychological changes of teenagers in the post-epidemic era.［Funded by National Social Science Foundation 2020 Education Youth Project of 13th Five-Year Plan （number， CHA200259）］