BACKGROUND:Erythromycin spreads widely in the body with a short period of effective concentrations and has a lot of adverse effects.Therefore,it is necessary to make erythromycin as targeted medicine.OBJECTIVE:To optimize the preparation conditions of erythromycin gelatin microspheres.DESIGN,TIME AND SETTING:An orthogonal controlled test was performed in the Department of Pharmacy,Guangdong Pharmaceutical University from June to December in 2005.MATERIALS:Erythromycin and gelatin.METHODS:According to the emulsion principle,erythromycin dispersed in the gelatin solution.In the process of preparing microspheres,the gelatin solution and oil should form W/O emulsion and then it turned into spheres by solidification.The formation and quality of microspheres were influenced by four factors,namely the concentration of gelatin,dosage of emulsifier,the solidification time and the speed of mixing.The arithmetic mean diameter of microspheres,the drug loading efficiency and the encapsulation efficiency were targets for the survey in this study on the basis of pretests.The best preparation conditions were optimized in accordance with the results of L9 (34) orthogonal tests.The optimized preparation conditions were obtained according to the results of orthogonal tests.MAIN OUTCOME MEASURES:The mean diameter of microspheres,the drug loading efficiency,the encapsulation efficiency,and the orthogonal tests were examined.RESULTS:The optimized preparation conditions of erythromycin gelatin microspheres included 15% gelatin,3.0 mL emulsifier,0.5 hour solidification and mixing at 1 000 r/rain.The erythromycin gelatin microspheres were regular in their morphology.Drug was enveloped in microspheres.The average particle size was (14.15±0.20) μm;the drug loading efficiency and the encapsulation efficiency were (5.83±0.38)% and (65.70±0.56)%,respectively.Over 90.16% of the microspheres was in the range of 7-25 μm;The reappearance of pharmaceutical technology was good.CONCLUSION:The optimized preparation conditions of erythromycin gelatin microspheres are obtained using L9 (34)orthogonal tests.The microspheres prepared meet the requirement of the size for lung targeting.

OBJECTIVE: To investigate the features and diagnosis way of small round cell tumor of nasal sinus and bases of skull. METHOD: A retrospective analysis of 123 case with small round cell tumor of nasal sinus and bases of skull were carried out in our hospital in past ten year. Clinical, histological, radiological and immunohistochemical characters of these cases were studied. RESULT: All cases usually complained of nasal obstruction, headache, diplopia, nasal mucus with bleeding, vision or weight loss. Expansible or infiltrative lumps were found in nasal sinus or bases of skull in radiological examination. A lot of small round cells were found in these tumors in histological pathology. At least 5-6 cell, tissue or tumor markers were examined immunohistochemically in most of cases before the final diagnosis were made. In some cases over 20 markers were examined. Five cases were carried out transmission electron microscope examination, special features such as desmosome and myofilament were found. CONCLUSION Clinical symptom, physical signs and radiological finding can supply malignant evidences of these tumors. Histological examination can make certain that they are small round cell tumors, but final diagnosis is still hard to make only by these. Immunohistochemical examination of various markers can tell the original characters of the specimen tissues, it is the key for final diagnosis. Transmission electron microscope examination is another helpful way for diagnosis.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Leukemia, Lymphocytic, Chronic, B-Cell ; diagnosis ; pathology ; Male ; Middle Aged ; Paranasal Sinus Neoplasms ; diagnosis ; pathology ; Retrospective Studies ; Skull Base Neoplasms ; diagnosis ; pathology ; Young Adult

Objective:To understand the current situation and influencing factors of depression among residents in Chongqing, and to explore the relationship between depression and administration satisfaction of the standardized residency training.Methods:Stratified random cluster sampling was used to select 372 residents currently participating the standardized residency training in Chongqing. The patient health questionnaire (PHQ-9) and administration satisfaction of residency training questionnaire were used to conduct a cross-sectional survey on the depression status and satisfaction of residents in Chongqing. SPSS 21.0 software package was used for partial correlation analysis and binary logistic regression analysis to explore the relationship between depression and administration satisfaction of the standardized residency training.Results:Among the 372 residents, 218 had mild depression and above (58.60%). There was a significant difference in the incidence of depression among residents of different ages, educational background, marital status, working hours and administration satisfaction of residency training ( χ2 = 23.02, 17.35, 12.24, 21.70, 95.20; P = 0.028, 0.027, 0.016, 0.041, <0.001 respectively). Partial correlation analysis showed that there was a negative correlation between the total score of depression and the five aspects of the administration satisfaction (total score, instructors, training base, managers and training income) ( r=-0.52, -0.45, -0.47, -0.45, -0.40, all P<0.01). In the binary logistic regression analysis of depression and satisfaction,the satisfaction had a negative impact on depression, and its B value was -1.71, and OR value was 0.18, P<0.001. Conclusion:The incidence of depression among residents in Chongqing is high. Age, educational background, marital status, working hours and administration satisfaction are related to the degree of depression. And the higher the degree of depression, the lower the administration satisfaction of residents. Relevant departments should pay attention to the mental health of residents and improve the quality of standardized residency training.

Objective:To investigate the risk factors for futile recanalization in patients with acute anterior circulation large vessel occlusion after endovascular mechanical thrombectomy (EMT), and establish a nomogram model predicting futile recanalization in these patients.Methods:One hundred and eighty-eight patients with acute anterior circulation large vessel occlusion after EMT were enrolled from Department of Neurology, Zhongshan Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine from January 2018 to December 2021. Patients were divided into futile recanalization group and effective recanalization group according to whether futile recanalization occurred; futile recanalization was defined as successful recanalization showed by immediate postoperative DSA (modified thrombolysis in cerebral infarction [mTICI] ≥2b), but poor functional outcome (modified Rankin Scale [mRS] scores>2 90 d after surgery). The clinical data were compared between futile recanalization group and effective recanalization group. Multivariate Logistic regression analysis was used to screen the risk factors for futile recanalization. R software was used to establish a nomogram model for futile recanalization. C-index was used to evaluate the differentiation of the model, and correction curve was used to evaluate the accuracy of the line graph model prediction. Receiver operating characteristic (ROC) curve was used to evaluate the predictive efficiency of the nomogram model.Results:Ninety-two patients had futile recanalization. Compared with the effective recanalization group, futile recanalization group had significantly older age, significantly higher hemoglobin A1c on admission, significantly longer time from puncture to vascular recanalization, significantly higher proportions of patients with hypertension history and poor collateral circulation, and significantly different severities of stroke and white matter hyperintensities (WMHs) and distribution of occlusive sites ( P<0.05). Multivariate Logistic regression analysis showed that age, history of hypertension, time from puncture to vascular recanalization, poor collateral circulation, severe WMHs, and moderate-severe stroke were independent risk factors for futile recanalization after EMT in patients with acute anterior circulation large vessel occlusion ( P<0.05). A nomogram model of futile recanalization was established according to the above 6 factors, with C-index of 0.862 ( 95%CI: 0.809-0.914); the calibration curve of the model was highly coordinated to the ideal model curve; area under the ROC curve of futile recanalization was 0.862 ( 95%CI: 0.809-0.914, P<0.001). Conclusions:Acute anterior circulation large vessel occlusion patients with older age, history of hypertension, longer time from puncture to vascular recanalization, poor collateral circulation, severe WMHs, and moderate-severe stroke trend to have futile recanalization after EMT. This nomogram can predict futile recanalization after EMT.

Objective:To explore the relative concentration changes of oxygenated hemoglobin (Oxy Hb) in the prefrontal cortex (PFC) and brain region activation during emotional face recognition tasks in women with perimenopausal depression.Methods:From February to April 2023, forty perimenopausal women were recruited, including 20 women with perimenopausal depression (experimental group) and 20 women with non-perimenopausal depression (control group). All participants were evaluated by the modified Kupperman score, 24-item Hamilton depression scale (HAMD-24), and patient health questionnaire (PHQ-9). Functional near-infrared spectroscopy (fNIRS) equipment was used to measure the relative concentration of Oxy-Hb in the PFC in two groups under the emotional face recognition task. Statistical analysis was performed by SPSS 26.0 software. Data were analyzed by a t-test, rank sum test, and Pearson correlation. Results:There were statistically significant differences in the results of the modified Kupperman score((23.20±3.66), (18.10±1.28)), HAMD-24((15.95±5.47), (3.35±1.84)), and PHQ-9(7.00(5.00, 10.75), 1.50(1.00, 3.00)) scales between the the experimental group and control group ( P<0.05). There was a positive correlation between the modified Kupperman score and the HAMD-24 score in the experimental group ( r=0.685, P=0.01). The reaction time of the experimental group in identifying negative and neutral emotional faces was statistically significant compared to the control group( t=4.01, 4.80, both P<0.05). Compared with identifying neutral emotions, PFC activation was stronger in the experimental group and control group when identifying negative emotions ( P<0.05). The PFC activation in the experimental group was stronger than that in the control group when identifying negative emotions ( P<0.05). There was no statistically significant difference in the activation level between the two groups when identifying neutral emotions ( P>0.05). Conclusion:Women with perimenopausal depression exhibit specificity in emotional processing, with increased PFC activation when identifying negative emotions, impaired emotional processing function of PFC, and dysfunction of aerobic metabolism.

BACKGROUND:Diabetic foot patients with wound infections constitute a large patient population,and there is currently no satisfactory treatment approach. OBJECTIVE:To investigate the clinical efficacy of a modified tibial cortex transverse transport combined with antibiotic-loaded bone cement for treating refractory diabetic foot ulcers. METHODS:A total of 46 diabetic foot ulcers patients,27 males and 19 females,with an average age of 64.37 years,were selected from Beijing Chaoyang Hospital,Capital Medical University and Beijing Chaoyang Integrative Medicine Rescue and First Aid Hospital from January 2020 to January 2023.All of them underwent the modified tibial cortex transverse transport combined with antibiotic-loaded bone cement treatment.Ankle-brachial index,WIFi(Wound/Ischemia/Foot infection)classification,pain visual analog scale score,and ulcer area were recorded before and 3 months after surgery. RESULTS AND CONCLUSION:(1)The mean ulcer healing time for the 46 patients was(58.07±24.82)days.At 3 months postoperatively,there were significant improvements in ankle-brachial index,pain visual analog scale score,ulcer area,and WIFi classification in 46 patients,as compared to the preoperative values,with statistically significant differences(P<0.05).Two patients experienced pin-tract infections,without infection or ulcer recurrence during the follow-up period.(2)These findings indicate that the modified tibial cortex transverse transport combined with antibiotic-loaded bone cement effectively alleviates patients'pain,improves lower limb circulation,controls infections,and promotes ulcer healing.

【Objective】 This study endeavors to introduce the statistical process control (SPC) method to analyze the quality control index concerning red blood cells in additive solution with leukocytes reduced, with the aspiration to advance the effective utilization of blood quality control data, thereby providing empirical foundations for the continual enhancement of blood quality. 【Methods】 Between 2020 and 2022, test data pertaining to the quality control index of red blood cells in additive solution with leukocytes reduced were amassed from six blood stations in Chongqing area. Utilizing Minitab software, the SPC analysis was carried out, p-control charts were delineated, the non-conformance rates of each quality control index along with their 95% confidence intervals were computed, as well as the Process Capability Index (Z value). 【Results】 In accordance with the Whole Blood and Blood Components Quality Requirements, the appraisal of the quality control indexes for red blood cells in additive solution with leukocytes reduced manifested a conformity rate of 100% for appearance, end-of-storage hemolysis rate and sterility test. Nonetheless, the conformity rates for volume, hemoglobin, hematocrit and residual leukocytes did not attain 100%, albeit all were ≥75%. Through the employment of binomial distribution-based p-control charts, the controlled state of the production process was discerned. Although the overarching conformity rate satisfied the national standard stipulations, it was discerned that there were out-of-control points concerning volume, hemoglobin, hematocrit, and residual leukocytes across different institutions, exhibiting palpable trends. The non-conformance rates of all quality control indexes were less than 25%, yet at a 95% confidence level, the residual leukocyte counts from institutions B, C, E, and F did not adhere to the stipulations (exceeding 25%). By architecting the ability evaluation index Z value for count data process capability analysis, it was unveiled that the volume of institution E, the hematocrit of institutions B, C, and F, and the residual leukocytes Z values of all six blood collection and supply institutions were below 2, hinting at avenues for amelioration. 【Conclusion】 The SPC method anchored in binomial distribution exhibits substantial application merit in blood component quality management, facilitating real-time surveillance of blood collection, preparation, and storage procedures.

OBJECTIVE To provide the suggestions for improving t he enthusiasm of the public to report adverse drug reactions （ADRs），promoting pharmaceutical manufacturers to improve the smoothness of ADR reporting channels by the public and the enthusiasm of assuming the main responsibility for drug safety ，and to provide reference for the performance of drug safety supervision by regulatory departments in China. METHODS Taking 180 pharmaceutical manufacturers that had entered the top 1 000 in the world as the objects ，the questionnaire was prepared to investigate the smoothness of ADR reporting channels through 4 channels：contact number ，e-mail，official website and new media （including Wechat and microblog ） of enterprise . The questionnaire involved the establishment of public reporting channels ，the records and the feedback of enterprises. The existing problems were analyzed and suggestions were put forward. RESULTS & CONCLUSIONS More than 70％ of pharmaceutical manufacturers in China had established the channels for reporting ADR by the public ，which were mainly regular channels such as contact numbers and e-mail ，and each channel had the phenomenon that ADR information couldn ’t be reported. More than 60％ of the public channels established by manufactures lacked inquiry and supplement for the miss ing part of th e reported information ； only 24 pharmaceutical manufacturers provided feedback on ADR information ，and the feedback contents were monotonous. gywf2021-11It is suggested that pharmaceutical manufacturers should pay more attention to ADR monitoring among the public ，consider increasing multiple reporting channels while ensuring the smoothness of channels ，strengthen the training of employee ’s information collection ability to improve the quality of information ，timely feed back the ADR information reported by the public ， and increase the feedback content concerned by the public.