COVID-19 has been prevalent for three years. The virulence of SARS-CoV-2 is weaken as it mutates continuously. However, elderly patients, especially those with underlying diseases, are still at high risk of developing severe infections. With the continuous study of the molecular structure and pathogenic mechanism of SARS-CoV-2, antiviral drugs for COVID-19 have been successively marketed, and these anti-SARS-CoV-2 drugs can effectively reduce the severe rate and mortality of elderly patients. This article reviews the mechanism, clinical medication regimens, drug interactions and adverse reactions of five small molecule antiviral drugs currently approved for marketing in China, so as to provide advice for the clinical rational use of anti-SARS-CoV-2 in the elderly.

The modernization and development of traditional Chinese medicine has led to higher standards for the quality of traditional Chinese medicine products. The extraction process is a crucial component of traditional Chinese medicine production, and it directly impacts the final quality of the product. However, the currently relied upon methods for quality assurance of the extraction process, such as simple wet chemical analysis, have several limitations, including time consumption and labor intensity, and do not offer precise control of the extraction process. As a result, there is significant value in incorporating near-infrared spectroscopy (NIRS) in the production process of traditional Chinese medicine to improve the quality control of the final products. In this study, we focused on the extraction process of Xiao'er Xiaoji Zhike oral liquid (XXZOL), using near-infrared spectra collected by both a Fourier transform near-infrared spectrometer and a portable near-infrared spectrometer. We used the concentration of synephrine, a quality control index component specified by the pharmacopoeia, to achieve rapid and accurate detection in the extraction process. Moreover, we developed a model transfer method to facilitate the transfer of models between the two types of near-infrared spectrometers (analytical grade and portable), thus resolving the low resolution, poor performance, and insufficient prediction accuracy issues of portable instruments. Our findings enable the rapid screening and quality analysis of XXZOL onsite, which is significant for quality monitoring during the traditional Chinese medicine production process.

This study aims to establish a method for determination of paeonol(Pae), eugenol(Eug), and piperine(Pip) content in receptor liquid and research on the permeability and pharmacokinetics of Huoxue Zhitong gel patch and microemulsion gel. The Franz diffusion experiment was conducted to assess the percutaneous permeability, and the microdialysis method was employed to assess pharmacokinetics of Huoxue Zhitong gel patch and microemulsion gel. The content of Pae, Eug, and Pip in receptor liquid in vitro and in vivo was determined by HPLC and UPLC-MS. The Q_n and J_(ss) of Pae, Eug, and Pip in the gel patch were significantly higher than those in the microemulsion gel, indicating that the drug release was faster in the gel patch. The C_(max), AUC_(0-760), and MRT of Pae, Eug, and Pip in the gel patch were higher than those in the microemulsion gel, indicating that the gel patch can promote the penetration and prolong the skin residence of the drug. The results of this study provide reference for improving the dosage form of Huoxue Zhitong patch.
Administration, Cutaneous ; Chromatography, Liquid ; Emulsions ; Permeability ; Skin/metabolism* ; Skin Absorption ; Tandem Mass Spectrometry

BACKGROUND: Whether nighttime surgery will affect the safety and prognosis of patients has been controversial. OBJECTIVE: To compare the safety and prognosis of daytime surgery versus nighttime surgery in patients receiving total knee arthroplasty. METHODS: Data of 712 patients who received unilateral total knee arthroplasty from January 2015 to January 2018 in the Binzhou Medical University Hospital were retrospectively analyzed. Of the patients, 615 cases were treated by total knee arthroplasty during daytime hours (8:00-18:00) and the other 97 patients were treated by total knee arthroplasty during nighttime hours (18:01-7:59). The perioperative and postoperative conditions of the two groups of patients were compared. This study was approved by the Medical Ethics Committee of Binzhou Medical University Hospital, China (approval No. LW2016013). RESULTS AND CONCLUSION: (1) Perioperative period: The operation time in the nighttime surgery group was shorter than that in the daytime surgery group (P < 0.05). The amount of intraoperative bleeding and 24 hours postoperative drainage were more in the nighttime surgery group than that in the daytime surgery group (P < 0.05) There was no statistically significant difference in blood transfusion rate, the incidence of deep vein thrombosis, postoperative infection rate, postoperative periprosthetic infection rate, postoperative fever rate, and length of hospital stay between the two groups (P > 0.05). (2) Prognosis: There was no significant difference in motion range and knee joint function KSS score between the two groups (P > 0.05). (3) The results showed that nighttime surgery did not increase the incidence of adverse reactions after total knee arthroplasty, and did not affect the prognosis of patients.

Objective To investigate the population genetic data of 47 autosomal insertion/deletion （InDel） polymorphism genetic markers involved in AGCU InDel 50 kit in Guangdong Han, Guangxi Zhuang, Guangxi Yao, Guangxi Jing, and Guangxi Mulam, and to evaluate their application in forensic DNA identification. Methods Multiplex amplification of the 768 unrelated individuals from the 5 ethnic groups mentioned above was performed with the AGCU InDel 50 kit. Genotyping was carried out by 3500xL gene analyzer, population genetic parameters were gathered and polymorphism analysis was performed. Results No linkage disequilibrium was found among 47 autosomal InDel loci in the 5 ethnic groups. The distribution of genotype frequency of 47 autosomal InDel loci confirmed to the Hardy-Weinberg equilibrium in Guangdong Han and Guangxi Zhuang. Except for rs139934789, the other 46 loci confirmed to the Hardy-Weinberg equilibrium in Guangxi Yao, Guangxi Jing, and Guangxi Mulam. The results of genetic variation analysis among the populations showed that 1.12% of genetic variation was caused by ethnic group differences. The cumulative discrimination power of 47 autosomal InDel loci for the 5 ethnic groups were all above 0.999 999 999 999 999. The cumulative probability of exclusion for each ethnic group was less than 0.999 9. The two Y-InDels were identified in all male individuals and were absent in all female individuals. Conclusion Except for rs139934789, the other 46 InDel loci have a relatively good genetic polymorphism in the 5 Chinese ethnic groups, and can be used for forensic individual identification and as effective supplements for paternity testing.
Asian People/genetics* ; China ; Ethnicity/genetics* ; Female ; Gene Frequency ; Genetic Loci ; Genetics, Population ; Humans ; INDEL Mutation ; Male ; Microsatellite Repeats ; Polymorphism, Genetic

Objective To investigate the feasibility of self-made capacitation liquid for in vitro fertilization of Mongolian gerbils, and to provide a reference for gerbil embryo cryopreservation. Methods In vitro fertilization of Mongo?lian gerbil was performed with the self?prepared capacitation solution and semen, and the 2?cell embryos of Mongolian ger?bils were cultured in vitro using an improved KSOM culture medium. Results The in vitro fertilization rate of gerbils was over 60%, and some gerbil 2?cell embryos could develop further in vitro. Conclusions An in vitro fertilization and embry?o development system of Mongolian gerbil has been established, but it needs further optimization.

Objective:TThe aim of this study was to observe the changes of the volume and distribution of body fluid after abdominal surgery,and further to explore its characteristics and influence factors.Methods:Sixtyone patients were included between March and June in 2016.The volume of intracellular water (ICW),extracellular water (ECW) and total body water (TBW) was estimated by InbodyS 10 on preoperative day 1 (PreD 1) and postoperative day (POD) 1,3,5 and 7.Furthermore,the patients were grouped according to the age,sex,type of operation,operation time and the daily liquid input,and the influence factors of postoperative fluid volume were analyzed in each subgroup.Results:Comparing to that of PreD1,the ICW,ECW,and TBW,mainly ECW,were increased significantly on POD1 (P＜ 0.05),and the level of postoperative fluid volume was decreased to that of PreD1 between POD3 and POD7.It showed that there was difference in the net increasing of body fluid on POD1 between different type of the patients.Obviously,the net increasing of fluid volume in woman on POD 1 was more than that in man.The net increasing of fluid volume on POD1 was correlated with the operation time and net liquid input.Conclusion:The fluid retention was found in the early stage of postoperative patients,and mainly exists in ECW.The main influence factors resulting postoperative fluid retention were prolonged operation time and increased net fluid input.

OBJECTIVETo explore the clinical efficacy and toxicity of CLAT protocol (cladribine, cytarabine and topotecan) for treating patients with refractory acute myeloid leukemia (R-AML).

METHODSA total of 18 patients with R-AML (median age 37 years, range 18 to 58 years; male n = 16, female n = 2) were treated with CLAT protocol, which consisted of cladribine 5 mg/m(2)/d, i.v. on days 1-5, cytarabine 1.5 g/m(2)/d, i.v. on days 1-5, topotecan 1.25 mg/m(2)/d, i.v. on days 1-5 and G-CSF 300 µg/d subcutaneous injection on day 6 until neutrophile granulocyte recovery.

RESULTSOut of 18 patients 2 died of severe infection before the assessment. Among 16 evaluated patients, 10 (55.6%) achieved complete remission (CR), and 2 (11.1%) achieved partial remission (PR), the overall response rate was 66.7%, the rest 4 patients did not respond (NR). The median overall survival time and DFS for the CR patients was 9.5 months (95%CI: 6.7-16.64) and 9.5 months (95%CI: 6.1-16.7) respectively. The 1 year OS and DFS rates were 45% and 46.9%, respectively. All patients developed grade 4 of granulocytopenia and thrombocytopenia, the median duration was 13 (range 2 to 21) days and 12 days (range 2 to 21), respectively, all patients developed infection, 2 patients died of severe infection. The most common non-hematological side effects included nausea, vomiting, diarrhoea, rash, aminotransferase or bilirubin elevation and were grade 1 to 2.

CONCLUSIONThe CLAT protocol seems to have promising for the treatment of refractory AML patients, and patients well tolerated. This CLAT protocol offers an alternative treatment for R-AML patients who received severe intensive treatment, especially with anthracycline-containing chemotherapy.

Adolescent ; Adult ; Agranulocytosis ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Cladribine ; therapeutic use ; Cytarabine ; therapeutic use ; Female ; Granulocyte Colony-Stimulating Factor ; therapeutic use ; Humans ; Leukemia, Myeloid, Acute ; drug therapy ; Male ; Middle Aged ; Remission Induction ; Thrombocytopenia ; Topotecan ; therapeutic use ; Young Adult

BACKGROUNDThe metastatic renal cell carcinoma (mRCC) patients treated with upfront cytoreductive nephrectomy combined with α-interferon yields additional overall survival (OS) benefits. It is unclear whether mRCC patients treated with vascular endothelial growth factor receptor-tyrosine kinase inhibitor (VEGFR-TKI) will benefit from such cytoreductive nephrectomy either. The aim of the study was to identify variables for selection of patients who would benefit from upfront cytoreductive nephrectomy for mRCC treated with VEGFR-TKI.

METHODSClinical data on 74 patients enrolled in 5 clinical trials conducted in Cancer Hospital (Institute), Chinese Academy of Medical Sciences from January 2006 to January 2014 were reviewed retrospectively. The survival analysis was performed by the Kaplan-Meier method. Comparisons between patient groups were performed by Chi-square test. A Cox regression model was adopted for analysis of multiple factors affecting survival, with a significance level of α = 0.05.

RESULTSFifty-one patients underwent cytoreductive nephrectomy followed by targeted therapy (cytoreductive nephrectomy group) and 23 patients were treated with targeted therapy alone (noncytoreductive nephrectomy group). The median OS was 32.2 months and 23.0 months in cytoreductive nephrectomy and noncytoreductive nephrectomy groups, respectively (P = 0.041). Age ≤45 years (P = 0.002), a low or high body mass index (BMI <19 or >30 kg/m2) (P = 0.008), a serum lactate dehydrogenase (LDH) concentration >1.5 × upper limit of normal (P = 0.025), a serum calcium concentration >10 mg/ml (P = 0.034), and 3 or more metastatic sites (P = 0.023) were independent preoperative risk factors for survival. The patients only with 0-2 risk factors benefited from upfront cytoreductive nephrectomy in terms of OS when compared with the patients treated with targeted therapy alone (40.0 months vs. 23.2 months, P = 0.042), while those with more than 2 risk factors did not.

CONCLUSIONSFive risk factors (age, BMI, LDH, serum calcium, and number of metastatic sites) seemed to be helpful for selecting patients who would benefit from undergoing upfront cytoreductive nephrectomy.

Adult ; Aged ; Aged, 80 and over ; Carcinoma, Renal Cell ; mortality ; surgery ; Cytoreduction Surgical Procedures ; Female ; Humans ; Kidney Neoplasms ; mortality ; surgery ; Male ; Middle Aged ; Nephrectomy ; Proportional Hazards Models

OBJECTIVEThis study was to investigate the cell morphology and cell immune phenotypic characteristics in patients with multiple myeloma (MM).

METHODSThe flow cytometry with multiparametric direct immunofluorescence technique, and CD45/SSC and CD38(+)(+)/CD138(+) gating were used to measure cell markers CD138, CD38, CD56, CD117, CD3, CD13, CD33, CD19, CD7, CD20, CD22, CD34, CD28 in 47 MM patients. At the same time the morphology examination of bone marrow cells was performed.

RESULTSThe suspicious myeloma cell ratio in MM patients was 9.42%-74.25% detected by flow cytometry, moreover, the myeloma cell ratio detected by morphology examination was 11.0%-80.6%, there was a good correlation between the two detection methods (r(2) = 0.54, P < 0.001). The ratio of antigen positive expression was as follows: 74.46% for CD138, 100% for CD38, 57.44% for CD56, 40.42% for CD117, 6.38% for CD13, 19.15% for CD33, 8.51% for CD20, 27.66% for CD28, 2.12% for CD22, 4.25% for CD34, 0% for CD3, 0% for CD19, 0% for CD7.

CONCLUSIONSCD45/SSC and CD38(+)/CD138(+) gating technique can accurately gate multiple myeloma cell sets which need analysis, the majority of myeloma cells expreses CD138, CD38, CD56 antigens. The immunophenotypic analysis combined with the cell morphology examination more contribute to the diagnosis and differential diagnosis of multiple myeloma.

Antigens, CD ; Bone Marrow Cells ; Flow Cytometry ; Humans ; Immunophenotyping ; Multiple Myeloma