Aim To establish NCI-H446/EP for small cell lung cancer resistant cells resistant to cisplatin and etoposide, and to evaluate their biological characteristics and multidrug resistance. Methods Nude mice were subcutaneously inoculated with NCI-H446 cells of SCLC to construct an in vivo model of xenograft tumor, and were given first-line EP regimen treatment for SCLC, inducing drug resistance in vivo, and stripping tumor tissue in vitro culture to obtain drug-resistant cells. The resistance coefficient, cell doubling time, cell cycle distribution, expression of multidrug resistance gene (MDR1), and drug resistance-related protein were detected in vitro, and the drug resistance to cisplatin and etoposide in vivo were verified. Results Mice with NCI-H446 tumors acquired resistance after eight weeks' EP regimen treatment, and the drug-resistant cell line NCI-H446/EP was obtained by isolation and culture in vitro. The resistance factors of this cell line to cisplatin, etoposide, SN38 and doxorubicin were 12.01, 18.36, 65.4 and 10.12, respectively. Compared with parental cells, the proportion of NCIH446/EP cells in Q

Umbilical cord mesenchymal stem cells (UC-MSCs) have been widely used in regenerative medicine, but there is limited research on the stability of UC-MSCs formulation during production. This study aims to assess the stability of the cell stock solution and intermediate product throughout the production process, as well as the final product following reconstitution, in order to offer guidance for the manufacturing process and serve as a reference for formulation reconstitution methods. Three batches of cell formulation were produced and stored under low temperature (2-8 ℃) and room temperature (20-26 ℃) during cell stock solution and intermediate product stages. The storage time intervals for cell stock solution were 0, 2, 4, and 6 h, while for intermediate products, the intervals were 0, 1, 2, and 3 h. The evaluation items included visual inspection, viable cell concentration, cell viability, cell surface markers, lymphocyte proliferation inhibition rate, and sterility. Additionally, dilution and culture stability studies were performed after reconstitution of the cell product. The reconstitution diluents included 0.9% sodium chloride injection, 0.9% sodium chloride injection + 1% human serum albumin, and 0.9% sodium chloride injection + 2% human serum albumin, with dilution ratios of 10-fold and 40-fold. The storage time intervals after dilution were 0, 1, 2, 3, and 4 h. The reconstitution culture media included DMEM medium, DMEM + 2% platelet lysate, 0.9% sodium chloride injection, and 0.9% sodium chloride injection + 1% human serum albumin, and the culture duration was 24 h. The evaluation items were viable cell concentration and cell viability. The results showed that the cell stock solution remained stable for up to 6 h under both low temperature (2-8 ℃) and room temperature (20-26 ℃) conditions, while the intermediate product remained stable for up to 3 h under the same conditions. After formulation reconstitution, using sodium chloride injection diluted with 1% or 2% human serum albumin maintained a viability of over 80% within 4 h. It was observed that different dilution factors had an impact on cell viability. After formulation reconstitution, cultivation in medium with 2% platelet lysate resulted in a cell viability of over 80% after 24 h. In conclusion, the stability of cell stock solution within 6 h and intermediate product within 3 h meets the requirements. The addition of 1% or 2% human serum albumin in the reconstitution diluent can better protect the post-reconstitution cell viability.

Objective To comprehensively excavate and analyze the research status,research hotspots and future trends of the literature related to the field of acupoint catgut embedding therapy for pain treatment in the CNKI database.Methods We searched the CNKI database from its establishment to June 2022,and scientifically analyzed the authors,keywords,and institutions of the included literature of acupoint catgut embedding therapy for pain treatment through specific algorithms of Citespace to generate a visual knowledge map.Results A total of 319 documents were included for statistical analysis,the number of publications in the field of acupoint catgut embedding therapy for the treatment of pain was generally on the rise,the number of publications by various authors was on the low side,and there was a lack of co-operation between the research teams,with the main institutions being the Guang'anmen Hospital,Chinese Academy of Chinese Medical Sciences,Affiliated Hospital of Youjiang Medical Universities of Nationalities and the Guangzhou University of Chinese Medicine,forming a 10-keyword clustering,and the hotspots of diseases under study were mainly mixed haemorrhoids,postoperative pain,low back and leg pain and dysmenorrhoea,etc..The main interventions were pure acupoint catgut embedding therapy and the combination of acupoint catgut embedding therapy and other acupuncture therapies,and the main research method was clinical research.Conclusion Acupoint catgut embedding therapy for the treatment of pain has a good development prospect,the future needs to deepen the clinical research,strengthen the mechanism research,pay attention to the joint use of acupoint catgut embedding therapy and other traditional Chinese medicine methods,and pay attention to the research of different thread materials.

Objective Data mining technology was used to mine the medication rules of the prescriptions used in the treatment of pediatric atopic dermatitis by Chinese medical master XUAN Guo-Wei.Methods The medical records of effective cases of pediatric atopic dermatitis treated by Professor XUAN Guo-Wei at outpatient clinic were collected,and then the medical data were statistically analyzed using frequency statistics,association rule analysis and cluster analysis.Results A total of 242 prescriptions were included,involving 101 Chinese medicinals.There were 23 commonly-used herbs,and the 16 high-frequency herbs(frequency＞100 times)were Glycyrrhizae Radix et Rhizoma,Saposhnikoviae Radix,Glehniae Radix,Perillae Folium,Ophiopogonis Radix,Cynanchi Paniculati Radix et Rhizoma,Microctis Folium,Dictamni Cortex,Scrophulariae Radix,Coicis Semen,Cicadae Periostracum,Lilii Bulbus,Rehmanniae Radix,Kochiae Fructus,Sclerotium Poriae Pararadicis,and Euryales Semen.The analysis of the medicinal properties showed that most of the herbs were sweet and cold,and mainly had the meridian tropism of the spleen,stomach and liver meridians.The association rule analysis yielded 24 commonly-used drug combinations and 20 association rules.Cluster analysis yielded 2 core drug combinations.Conclusion For the treatment of pediatric atopic dermatitis,Professor XUAN Guo-Wei focuses on the clearing,supplementing and harmonizing therapies,and the medication principle of"supporting the healthy-qi to eliminate the pathogen,and balancing the yin and yang"is applied throughout the treatment.

Objective To investigate the characteristics of menopause-related symptoms and cognition status of menopausal hormone therapy(MHT)among menopausal women.Methods A total of 619 menopausal women with menopause-related symptoms who were admitted to The First Affiliated Hospital of Xi'an Jiaotong University were selected as the study subjects.Data were collected by questionnaire to analyze the characteristics of menopause-related symptoms,and the menopausal women's cognitive status of MHT and therapeutic effects were explored.Results Among 371 perimenopausal women,the menopause-related symptoms with the top three rates were fatigue(69.81％),insomnia(66.85％),and hot flush-sweating(58.22％).Among 248 postmenopausal women,the menopause-related symptoms with the top three rates were hot flashes and sweating(64.11％),bone and joint pain(60.89％),and fatigue(56.85％).The incidence of insomnia and fatigue in postmenopausal women was significantly lower than that in perimenopausal women(P＜0.01),while the incidence of bone and arthralgia,urinary system infection,vaginal dryness and painful intercourse was significantly higher than that in perimenopausal women(P＜0.01).There was no significant difference in Kupperman score between perimenopausal and postmenopausal women(P＞0.05),but score degree distribution differed significantly(P＜0.05).Perimenopausal women had the highest proportion of mild score while postmenopausal women had the highest proportion of moderate score.There were significant differences in Kupperman score among postmenopausal women with different menopause ages,menopause years and menopause mode(P＜0.05).The earlier menopause age and shorter menopause years,the higher Kupperman score was;the Kupperman score was significantly higher in surgical menopause than in natural menopause(P＜0.05).Multivariate Logistic regression analysis showed that age of 45-54 years old,retirement or unemployment,spouse's disease or death,abnormal sexual life,and high education level were the risk factors for the occurrence of menopausal symptoms(P＜0.05);high family income and＞3 times/week exercise were the protective factors for the occurrence of menopausal symptoms(P＜0.05).The Internet was the way that accounted for the highest proportion of menopausal women's understanding of MHT(39.92％),and the tumor accounted for the highest proportion of menopausal women's concern about MHT(33.67％).There were 465 menopausal women without MHT contraindications(89.77％)who used MHT under the guidance of professional doctors,and their symptoms improved significantly after treatment(P＜0.05).Conclusion Menopausal women have obvious menopause-related symptoms,and the earlier the age,the shorter the menopause years and the more severe symptoms in the surgical menopause.Therefore,it is necessary to pay attention to the impact of menopause on the health of menopausal women and increase the use rate of MHT to improve the quality of life of menopausal women.

Objective To investigate the clinical efficacy of Bushen Yijing Decoction for the treatment of xerophthalmia of kidney yang deficiency type and to observe its effect on serum Th1/Th17 cytokines.Methods From January 2021 to January 2023,a total of 96 patients with xerophthalmia of kidney yang deficiency type were selected as the study objects.According to the treatment methods,the patients were divided into observation group and control group,with 48 cases in each group.The control group was treated with Sodium Hyaluronate Eye Drops externally,and the observation group was given oral use of Bushen Yijing Decoction together with Sodium Hyaluronate Eye Drops externally.The course of treatment for the two groups covered 21 days.The changes of tear film break-up time(BUT),corneal fluorescein staining(FL)score,SchirmerⅠtest(SIT)value,serum Th1/Th17 cytokines,Ocular Surface Disease Index(OSDI)questionnaire scores,and 25-Item National Eye Institute Visual Function Questionnaire(NEI-VFQ-25)score in the two groups were observed before and after treatment.Moreover,the clinical efficacy and incidence of adverse reactions were compared between the two groups.Results(1)After 21 days of treatment,the total effective rate of the observation group was 95.83%(46/48),and that of the control group was 70.83%(34/48).The intergroup comparison(tested by chi-square test)showed that the clinical efficacy of the observation group was significantly superior to that of the control group(P＜0.01).(2)After treatment,the ocular surface function indicators of BUT and SIT values in the two groups were higher and the FL values were lower than those before treatment(P＜0.05).The increase of BUT and SIT values and the decrease of FL values in the observation group were significantly superior to those in the control group(P＜0.01).(3)After treatment,the levels of serum cytokines of interleukin 17(IL-17),tumor necrosis factor alpha(TNF-α)and interferon gamma(IFN-γ)in the two groups were lower than those before treatment(P＜0.05),and the decrease of serum IL-17,TNF-α and IFN-γ levels in the observation group was significantly superior to that in the control group(P＜0.01).(4)After treatment,the questionnaire scores of OSDI in the two groups were lower and the NEI-VFQ-25 scores were higher than those before treatment(P＜0.05).The decrease of OSDI scores and the increase of NEI-VFQ-25 scores in the observation group were significantly superior to those in the control group(P＜0.01).(5)The incidence of adverse reactions in the observation group was 4.17%(2/48),and that in the control group was 8.33%(4/48).There was no significant difference between the two groups(P＞0.05).Conclusion Bushen Yijing Decoction can enhance the clinical efficacy of xerophthalmia of kidney yang deficiency type,and the decoction is effective on alleviating the eye discomforts,improving the ocular surface function of patients,regulating the levels of Th1/Th17 cytokines,and relieving the inflammatory response without inducing severe adverse reactions while with high safety.

SARS-CoV-2 has posed a significant threat to a subset of the patient population.The occurrence of hematological malignancies and tumor treatment can lead to immunosuppression in patients,which significantly increases the risk of serious complications,severe incidence and mortality after SARS-CoV-2 infection.The treatment of a patient with follicular lymphoma infected with SARS-CoV-2 was described in detail.The patient remained positive for RT-PCR tests during the hospitalization for nearly 90 days.After undergoing 5 rounds of antiviral treatment,along with glucocorticoid anti-inflammatory therapy,low-molecular-weight heparin for anticoagulation,antibiotics for infection control,and respiratory support through the use of a ventilator,the patient eventually obtained negative result of the RT-PCR test.Subsequently,the patient was successfully weaned from mechanical ventilation and discharged.By summarizing the treatment process of this case,we hoped to provide reference and experience for future clinical diagnosis and treatment.

A 5-year-old girl was admitted due to one episode of melena and one episode of hematemesis.Upon admission,gastroscopy revealed esophageal and gastric varices.Abdominal CT scan,MRI,and color Doppler ultrasound suggested cirrhosis,intrahepatic bile duct dilation,and bilateral kidney enlargement.Genetic testing identified compound heterozygous mutations in the PKHD1 gene:c.2264C>T(p.Pro755Leu)and c.1886T>C(p.Val629Ala).The c.2264C>T(p.Pro755Leu)mutation is a known pathogenic variant with previous reports,while c.1886T>C(p.Val629Ala)is a novel mutation predicted to have pathogenic potential according to Mutation Taster and PolyPhen2.The child was diagnosed with autosomal recessive polycystic kidney disease.In children presenting with gastrointestinal bleeding without obvious causes,particularly those with liver or kidney disease,consideration should be given to the possibility of autosomal recessive polycystic kidney disease,and genetic testing should be conducted for definitive diagnosis when necessary.

Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5％were gram-positive and 70.5％were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3％,76.7％and 77.9％,respectively.Overall,94.0％of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8％of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2％in the isolates from children and 95.7％in the isolates from adults.The resistance rate to carbapenems was lower than 13.1％in most Enterobacterales species except for Klebsiella,21.7％-23.1％of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1％to 13.3％.The prevalence of meropenem-resistant strains decreased from 23.5％in 2019 to 18.0％in 2022 in Pseudomonas aeruginosa,and decreased from 79.0％in 2019 to 72.5％in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.

Objective:To analyze the prognostic nutritional index(PNI),controlling nutritional status(CONUT)and fibrinogen/albumin ratio(FAR)levels in elderly patients with multiple myeloma(MM)and their prognostic impact.Methods:The clinical data of 74 elderly MM patients diagnosed in Gansu Provincial Hospital from January 2020 to July 2022 were retrospectively analyzed.The optimal cut-off values for PNI,CONUT score and FAR were obtained by receiver operating characteristic(ROC)curve,which were used for grouping patients.The correlation of above three indexes with clinical parameters such as sex,serum calcium(Ca),β2-microglobulin(β2-MG),serum creatinine(Cr)in elderly MM patients were analyzed.The survival rates of patients with different levels of each index were compared.Univariate and multivariate analysis of the impact of clinical indicators on the prognosis of patients were performed.Results:The optimal cut-off values for PNI,CONUT score and FAR were 39.775,3.5 and 0.175,respectively,according to which the patients were divided into high and low group.Statistical analysis showed that there were significant differences in albumin level among different groups(all P＜0.05).In addition,there was a significant difference in hemoglobin between high-PNI group and low-PNI group(P＜0.05),while in sex distribution between high-FAR and low-FAR group(P＜0.05).The survival rate of elderly MM patients with increased PNI,decreased CONUT score and FAR was higher(all P＜0.05).Univariate and multivariate analysis showed that β2-MG,Cr,PNI,CONUT score and FAR were independent prognostic factors for elderly MM patients.Conclusion:PNI,CONUT score and FAR are related to some clinical indicators of elderly MM patients,and have an impact on the prognosis.