The Chinese Pharmacopoeia is the legal technical standard which should be followed during the research, production, use, and administration of drugs. At present, the new edition of the Chinese Pharmacopoeia is planned to be promulgated and implemented. This article summarizes and analyzes the main characteristics and the content of updates and amendments of the Chinese Pharmacopoeia 2025 Edition(Volume Ⅰ), to provide a reference for the correct understanding and accurate implementation the new edition of the pharmacopoeia.

BACKGROUND:Autophagy has become a rapidly developing research hotspot in the biomedical fields.Many researchers are actively exploring the molecular regulatory mechanism of autophagy in a variety of diseases.However,the role of autophagy in hair growth is still unknown. OBJECTIVE:To review the current research progress and application value of autophagy in hair growth and regeneration,to understand the role of autophagy in hair growth,to explore the pathogenesis of autophagy in pathological hair loss,and to provide new ideas for the study of drugs for hair loss. METHODS:Using"hair follicle growth,hair growth,hair regeneration,autophagy associated proteins,autophagy activity,autophagy associated genes,autophagy"as Chinese search terms and"hair growth,hair follicle,hair regeneration,autophagy"as English search terms,PubMed and CNKI databases were searched.The research progress on autophagy,hair growth and the role of autophagy in hair growth in and outside China in recent years was reviewed and summarized.Articles incompatible with the subject content of the paper were excluded.Finally,78 articles were included for the result analysis. RESULTS AND CONCLUSION:(1)Autophagy is a normal metabolic process in eukaryotes with complex molecular mechanisms and functional properties,which is beneficial to cell survival and cell death.(2)Alopecia-related diseases are associated with changes in autophagy activity,which can regulate hair growth cycle.Knockout or overexpression of autophagy-related genes can change the state of hair growth.Multiple autophagy related signaling pathways have been found to be related to hair follicle growth.Activators or inhibitors of autophagy can be used to treat or prevent hair loss.

Objective: To prospectively compare single-shot (SS) echo-planar imaging (EPI) and field-of-view optimized and constrained undistorted single-shot multiplexed sensitivity-encoding (FOCUS MUSE) for diffusion-weighted imaging (DWI) in evaluating thyroid-associated ophthalmopathy (TAO). Materials and Methods: SS EPI and FOCUS MUSE DWIs were obtained from 39 patients with TAO (18 male; mean ± standard deviation: 48.3 ± 13.3 years) and 26 healthy controls (9 male; mean ± standard deviation: 43.0 ± 18.5 years). Two radiologists scored the visual image quality using a 4-point Likert scale. The image quality score, signal-to-noise ratio (SNR), contrast-tonoise ratio (CNR), and apparent diffusion coefficient (ADC) of extraocular muscles (EOMs) were compared between the two DWIs. Differences in the ADC of EOMs were also evaluated. The performance of discriminating active from inactive TAO was assessed using receiver operating characteristic curves. The correlation between ADC and clinical activity score (CAS) was analyzed using Spearman correlation. Results: Compared with SS EPI DWI, FOCUS MUSE DWI demonstrated significantly higher image quality scores (P < 0.001), a higher SNR and CNR on the lateral rectus muscle (LRM) and medial rectus muscle (MRM) (P < 0.05), and a non-significant difference in the ADC of the LRM and MRM. Active TAO showed higher ADC than inactive TAO and healthy controls with both SS EPI and FOCUS MUSE DWIs (P < 0.001). Inactive TAO and healthy controls did not show a significant ADC difference with both DWIs. Compared with SS EPI DWI, FOCUS MUSE DWI demonstrated better discrimination of active from inactive TAO (AUC:0.925 vs. 0.779; P = 0.007). The ADC was significantly correlated with CAS in SS EPI DWI (r = 0.391, P < 0.001) and FOCUS MUSE DWI (r = 0.645, P < 0.001). Conclusion FOCUS MUSE DWI provides better images for evaluating EOMs and better performance in diagnosing active TAO than SS EPI DWI. The application of FOCUS MUSE will facilitate the DWI evaluation of TAO.

Objective: To investigate the efficacy of different bleaching methods on white-spot lesions of the enamel using optical coherence tomography and to evaluate its feasibility for monitoring the therapeutic effects on white-spot lesions. Methods: Forty-eight sound premolars extracted for orthodontic reasons were selected and cut for 4 mm×4 mm×2 mm enamel blocks in buccal surfaces of the crowns. The samples were covered with acid-resistant varnish (except for the buccal surfaces) and immersed in demineralization solution for 18 days to establish the white-spot lesion models of the enamels. Samples were randomly divided into four groups (n=12). Group A was given demineralization only. Specimens in Group B, C and D were treated with 40% hydrogen peroxide, resin infiltration and 40% hydrogen peroxide combined with resin infiltration, respectively. Eight samples in each group were randomly selected. OCT was applied to observe the optical changes of the enamel surface and according to the OCT scanning results, the demineralization depth of enamel samples in each group was calculated. Then, the enamel blocks were embedded in epoxy resins, except the buccal surfaces, and measured for the microhardness values of the enamel surface by a microindentation hardness tester. Four samples in each group were cut longitudinally, and the ultrastructural changes of enamel samples in each group were observed by scanning electron microscope. Results: OCT showed that the light scattering characteristics of enamel surface changed in all groups, and the bright layer was formed, but the thickness of bright layer in Group C and D was significantly lower than that in Group A and B (P<0.05). The microhardness values (kg/mm2) of the samples in Group A-D were (214.99±31.70), (250.66±33.64), (312.42±18.01) and(286.53±26.65), respectively. The microhardness of enamel surfaces in Group C and D was significantly higher than that in Group A and B (P<0.05), and the ultrastructure of enamel surfaces in Group C and D were more flat and dense in SEM observation (P<0.05). Conclusion The methods of resin infiltration therapy or 40% hydrogen peroxide combined with resin infiltration could effectively improve white-spot lesions of the enamel and the non-invasive OCT can be used as a better evaluation method for the diagnosis and treatment of white-spot lesions of the enamel.

Objective:To investigate the status quo of the knowledge, attitude and practice (KAP) of standardized insulin injection at home in Shanghai community diabetic patients and analyze its influencing factors.Methods:In this cross-sectional study, totally 1 947 diabetic patients who signed to be managed by 21 community health service centers in Fengxian District, Shanghai from May to October 2020 who used insulin pen injections at home were selected by continuous enrolment. They were investigated with a general information questionnaire and a questionnaire on KAP of standardized insulin injection. Univariate analysis and multiple linear regression were used to analyze the influencing factors of patients' KAP of standardized insulin injection at home. A total of 1 947 questionnaires were distributed, and 1 697 valid questionnaires were recovered, with an effective recovery rate of 87.2%.Results:The total KAP score of insulin standard injection in the 1 697 diabetic patients was (51.01±6.81) , which was at a moderate level. Among all the items in the questionnaire, the 3 items with the lowest compliance rate were: checking the injection site every time before insulin injection (14.4%) , agreeing to put the discarded insulin needles into the capped hard-shell container (16.1%) , agreeing to and implementing insulin pen needle replacement after each use (20.6%) . Multiple linear regression analysis showed that age, education, type of medical insurance, and whether they had received insulin injection guidance were the influencing factors to the KAP of standardized insulin injection at home ( P<0.01) , which accounted for 8.6% of the total variation. Conclusions:Community medical staff should pay attention to the health education of insulin injection at home for diabetic patients, improve the content and form of education based on the characteristics of the community population, thereby improving the compliance rate of injection site inspection, replacement of insulin pen needles and standardized disposal of discarded needles, further standardizing insulin injection behavior, and improving clinical outcomes such as glycemic control in patients.

With the development of social economy and the full opening of the three-child policy, more and more elderly people will become the main force in raising grandchildren in the future, and the mental health of the elderly in intergenerational raising has become the focus of the whole society. This article summarizes the causes of the intergenerational raising, the mental health status of the elderly in intergenerational raising, and reviews the influencing factors of the mental health of the elderly in intergenerational raising, in order to provide a reference for the construction of the social security system for the elderly and young people in China.

OBJECTIVE：To establish a method for the content determination of potential genotoxic impurity maleic hydrazide in azintamide raw material. METHODS ：HPLC-FLD method was adopted. The determination was performed on Thermo Syncronis C18 column with mobile phase consisted of 0.2 mol/L acetic acid-methanol （gradient elution ）. The column temperature was set at 30 ℃，the excitation wavelength was 315 nm and emission wavelength was 389 nm. The flow rate was 1 mL/min，and the sample size was 20 μL. RESULTS：The blank solvent and azintamide did not interfere with the determination of maleic hydrazide. The linear range of maleic hydrazide was 19.5-300 ng/mL（r＝0.999 9）. The limit of detection was 4.5 ng/mL and the limit of quantification was 19.5 ng/mL. The recovery ranged from 98.79％ to 103.76％（RSDs were lower than 3.00％，n＝9）. RSDs of precision and stability （24 h）tests were no more than 5.63％，and those of durability tests were less than 2.00％（n＝6）. Maleic hydrazide was not detected in 3 batches of azinamide raw material. CONCLUSIONS ：The method is specific ，sensitive and accurate. It can be used for the trace determination of maleic hydrazide in azintamide or other matrix.

Objective:To evaluate the roles between two different HIV self-testing models in promoting HIV-testing among men who have sex with men (MSM).Methods:This paper focuses on two HIV self-testing service models. The first; is the online self-testing model (HIV self-testing conventional model) with the sexual health promotion network platform. The other one is an innovative HIV self-testing model (secondary distribution model), based on the previous program. The two different self-testing models, including the number of indexes and alters, the positive rate, and the demographics of indexes and alters, are compared. The influence of volunteers with or without leadership on the number of HIV self-test kits distributed or self-use is analyzed through the leadership survey scale.Results:The return rates of HIV self-testing results in the two models are 94.7%(323/341) and 99.2%(1 141/1 150), respectively, within 30 days. The proportion of alters in the secondary distribution is significantly higher (45.9%,281/612) than the conventional HIV self-testing (6.3%,20/318). In the secondary distribution model, the difference between the number of indexes and alters indicators including age, marital status, residence, sex orientation, anal sex with men in the past six months, and HIV test are statistically significant ( χ 2 test, all P<0.05). The opinion leader of MSM has significantly impacted the promotion of HIV self-testing ( P<0.05). Conclusions:Both models can promote HIV self-testing, result return, and HIV positive detection among MSM. In terms of expanding the testing and detection of HIV positive, the secondary distribution mode shows more obvious advantages, which significantly promotes a large number of MSM who have never been tested for HIV to undergo HIV testing. Influential indexes have a significant effect on increasing the HIV testing rate and promoting HIV testing among MSM.

Objective:To understand the changing trends of HIV testing rates, with a focus on HIV self-testing, and to evaluate the impact of HIV self-testing on expanding HIV testing among MSM in China in past few years.Methods:MSM were recruited online nationwide via a gay social networking app (Blued) from 2013 to 2016 and 2018. The survey collected information about socio-demographic backgrounds, sexual behaviors, and prior HIV testing experiences, including HIV self-testing. Trend analyses were conducted.Results:Respectively, 1 342, 1 424, 1 173, 2 105 and 699 MSM were recruited nationwide from 2013 to 2016, and in 2018. The mean age was (30.6±6.6)years in 2013 and showed a decreasing trend afterwards. The HIV testing rate was 60.0% (805/1 342) in 2013 and there was a rising trend from 2013 to 2016, and 2018 (trend Z =19.3, P <0.001), reaching a peak at 77.3% (540/699) in 2018. Further, the HIV self-testing rate increased from 19.3% (259/1 342) in 2013 to 58.1% (406/699) in 2018 ( χ2=237.5, P <0.001). The proportion of MSM who had HIV self-testing among prior HIV testers significantly increased from 32.2% (259/805) to 75.2% (406/540) during the study period (trend Z =14.3, P <0.001). Conclusions:The HIV testing rate, HIV self-testing rate and proportion of men who had HIV self-testing among former HIV testers among web-based Chinese MSM showed substantial increases from 2013 to 2016,and 2018. This suggests that HIV self-testing may have a significant effect on the expansion of HIV testing coverage in MSM, and has important public health implications for HIV/AIDS prevention in China.

Objective:To explore the effect of homemade aromatic masks on nausea, vomiting and pain in non-small cell lung cancer patients with chemotherapy.Methods:From October 2018 to August 2019, convenience sampling was used to select 82 patients with non-small cell lung cancer admitted to the 900th Joint Logistic Support Unit of the People's Liberation Army of China. All patients were randomly divided into control group and experimental group, each with 41 cases. Control group carried out the routine care, and experimental group was treated with the homemade aromatic mask on this basis. The Chinese version of Index of Nausea and Vomiting and Retching (INVR) and the Brief Pain Index (BPI) were used to compare nausea, vomiting and pain indicators of patients between two groups during chemotherapy.Results:On the third day of chemotherapy, the total score of nausea and vomiting, and the average pain score of experimental group were (11.00±5.46) and (1.63±1.14) respectively, lower than those of control group, and the differences were statistically significant ( t=-6.635, -4.781; P<0.01) . Conclusions:The homemade aromatic mask can relieve chemotherapy-induced nausea and vomiting in non-small cell lung cancer patients with chemotherapy, and reduce the pain of patients.