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AIM: To discuss the application and clinical significance of the ratio of area under the curve over 24 hours to minimum inhibitory concentration (AUC
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AIM: To establish a population pharmacokinetics (PPK) model of vancomycin in patients with hematological diseases who developed neutropenia. METHODS: Patients from department of hematology with neutropenia in our hospital were taken into oue study.The patients (n=77) were performed trough and peak serum concentration of vancomycin, and their clinical data and medication information were collected. The Nonlinear mixed effect modeling approach (NONMEM) was used to establish the PPK model of those patients and model assessment and validation was carried out. Goodneess of fit plots and visual predictive check plus Bootstrap approach were used to assess validate our model. RESULTS: The model was a two compartment model, the final formulas were: clearance rate CL=6.84×(BW/70)
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OBJECTIVE： To evaluate the application of individualization dosage auxiliary system JPKD and SmartDose in individualization administration of vancomycin. METHODS： A retrospective study was conducted among adult inpatients in Hainan Provincial People’s Hospital from Apr. 2018 to Mar. 2019 with intravenous use of vancomycin. SmartDose was used to predict the steady blood trough concentration of vancomycin in the initial dosage regimen， and the absolute weight deviation and relative prediction error between the measured concentration and the predicted concentration were calculated. The effects of body mass index （BMI） and acute kidney injury （AKI） on absolute weight deviation were analyzed by χ2 test or continuously corrected χ2 test. Vancomycin drug delivery scheme was adjusted for patients with ungualified steady blood drug trough concentration. JPKD and SmartDose system were used to predict the blood concentration of vancomycin after adjusting the dosage regimen. The absolute weight deviation and relative prediction error between the measured concentration and the predicted concentration were calculated. The prediction ability of the two systems was evaluated and 3 examples was analyzed. RESULTS： Predicted steady blood trough blood concentration of 85 included patients in SmartDose predicted initial dosage regimen were （11.36±5.96） μg/mL （2.34-29.33 μg/mL）； the measured concentration was （11.44±6.57） μg/mL （3.10-29.50 μg/mL）； absolute weight deviation was 22.95％， and the relative prediction error was 2.72％. Whether BMI was normal or not had significant effects on the absolute weight deviation （χ2＝4.75， P＝0.029）， and whether AKI occurred or not had no significant effects on the absolute weight deviation （χ2＝0.236， P＝0.627）. JPKD and SmartDose predicted that predicted steady blood trough concentrations of vancomycin in 22 included patients were （11.06±3.58） and （12.15±4.35） μg/mL， and the measured concentration was （12.57±4.50） μg/mL； absolute weight deviations were 18.30％ and 18.68％； relative prediction errors were －8.65％ and －0.44％， respectively. The absolute weight deviations of the predicted values of the two systems were less than 30％. The absolute weight deviations of prediction results were also less than 30％ in 3 patients. CONCLUSIONS： JPKD and SmartDose system have good predictive ability for blood concentration of vancomycin in clinical application， and can be used to optimize the individualized administration of vancomycin.
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Objective To analyze the effects of community-based intervention on improving early detection of individuals with high risk nasopharyngeal carcinoma and to explore the interventional mechanism of prevention and treatment in nasopharyngeal carcinoma.Methods Total of 139 344 residents of the Second Chinese Medicine Hospi-tal of Guangdong Province Hospital Community were detected per year.Individuals with high risk nasopharyngeal car-cinoma or nasopharyngeal carcinoma patients were divided into intervention group(69 616 cases) and control group (69 728 cases) according to the random number table.The two groups were given conventional treatment (radiothera-py,chemotherapy and surgery treatment) after diagnosed.The intervention group was interfered with long -term prevention,health care,medical care,rehabilitation,health education and psychological intervention by full-time phy-sician,while the control group was only treated by general education intervention.The awareness of early symptoms and the risk factor of nasopharyngeal carcinoma were analyzed.Additionally,the behavior,knowledge and attitude on nasopharyngeal carcinoma were detected before and after the intervention.Results Community-based intervention significantly improved the rate of early detection of nasopharyngeal carcinoma high-risk individuals ( 75.31% vs. 44.37%,χ2 =5.32,P<0.01) .The awareness rates of major symptoms and the damage of nasopharyngeal carcinoma were 89.34%and 91.78%in the intervention group.In the control group,the rates were 42.17%and 28.47%.The differences of the two groups were significant(P<0.05).Additionally,the awareness of diagnosis standard and good habits were improved significantly in the intervention group compared with the control group(P<0.01).Our results showed that intervention changed the attitude and understanding of patients with nasopharyngeal carcinoma and improved the quality of life of patients with nasopharyngeal carcinoma.Conclusion Intervention increased the early diagnostic rate of nasopharyngeal carcinoma and promoted the quality of life of patients with nasopharyngeal carcinoma.
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OBJECTIVE@#To investigate the effect of T lymphoma invasion and metastasis 1 (Tiam 1) overexpression in head and neck squamous cell carcinoma (HNSCC) cells.@*METHOD@#Endogenous expression of Tiam 1 in 8 head and neck squamous cell carcinoma cell (HNSCC) lines was investigated by real-time RT-PCR. A lentivirus vector containing Tiaml was transfected into UM-SCC-47 cells, a head and neck squamous cell carcinoma cell line with little endogenous Tiaml expression. Stable clone, obtained by G418 screening, were assayed by RT-PCR and Western blot to validate the gene expression efficiency. The biological behaviors of the transduced cells were determined by cell counting, MTT and in-vitro migration assay.@*RESULT@#Tiam 1 gene was highly expressed in M2 cell line and it's low level expression was found in UM-SCC-47. Cell counting and MTT assay showed that over-expression of Tiaml significantly promoted cell proliferation (P < 0.05). The cell monolayers overexpressed Tiaml that resulted in a significant increasment of cell migration in infected head and neck squamous cell carcinoma cell lines (P < 0.05).@*CONCLUSION@#Tiam 1 gene plays an important role in the growth and migration in head and neck squamous cell carcinoma cell lines. It may be a useful marker for metastasis of head and neck squamous cell carcinoma.
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Humans , Blotting, Western , Carcinoma, Squamous Cell , Metabolism , Pathology , Cell Line, Tumor , Cell Movement , Cell Proliferation , Guanine Nucleotide Exchange Factors , Genetics , Metabolism , Head and Neck Neoplasms , Metabolism , Pathology , Squamous Cell Carcinoma of Head and Neck , T-Lymphoma Invasion and Metastasis-inducing Protein 1 , TransfectionABSTRACT
OBJECTIVE@#To investigate the effects of radioactive ray on transmission capability of nose mucociliary.@*METHOD@#Forty-six patients with NPC were selected and saccharin clearance time (SCT) for 7 phases were detected in both pre- and post-radiotherapy respectively.@*RESULT@#Among 46 patients with NPC, the shortest SCT was 247 seconds and the longest 601 seconds in pre-radiotherapy phases; from 4th week of introradiotherapy to 18 months of postradiotherapy, the longest SCT was in 12 months after radiotherapy, which was 903 seconds. There were no significant differences in SCT before radiotherapy and 18 months after radiotherapy. There were significant differences in SCT of preradiotherapy and introdiotherapy, post radiotherapy, after radiotherapy 3 months, 6 months, 12 months after radiotherapy.@*CONCLUSION@#Radiotherapy is the important factors in influencing transmission capability of nose cavity and sinus mucociliary and hints that gender and nasal cavity side don't affect SCT. Detection of SCT in different stages of NPC patients can be helpful to protect nasal mucous membrane effectively, and to reduce incidence rate of RNS.
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Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Mucociliary Clearance , Radiation Effects , Nasal Mucosa , Nasopharyngeal Neoplasms , Radiotherapy , Saccharin , MetabolismABSTRACT
A 33-year-old male patient complained of presenting goiter on the low back area for 2 months. Pathological examinations of resected goiter suggested non-Hodgkin lymphoma and showed that T cells, immunoblasts, and hemogram were roughly normal, and 2% sarcoma cells could be found in bone marrow. Stage Ⅳ T-cell non-Hodgkin's lymphoma was diagnosed. Following 4 months of chemotherapy using CHOP protocol (cyclophosphamide, adriamycin, vincristine, and prednisone included), the patient underwent bone marrow activation and autologous peripheral blood stem cell transplantation in combination with recombinant interleukin-2 application in April 1998. The preprocessing was performed under MACC protocol (L-sarcolysinum, cytarabine, cyclophosphamide, and Iomustine included). Ten days after autologous stem cell transplantation, neutrophil concentration was > 0.5×109/L and sixteen days after transplantation, blood platelet concentration was > 50×109/L. Six days after transplantation, the patient exhibited fever, and E. Coli infection was confirmed through blood culture. After antibiotic treatment, body temperature recovered to normal, and fever disappeared. The patient had been followed-up for 10 years and 10 months. During the follow-up period, he lived a normal life and work.