Radiosensitivity of connexin 43(CX43) on S24-GBMSCs based brain tumor in nude mice / 中华放射肿瘤学杂志

Objective:To investigate the impact of connexin 43(CX43) on the connection of S24 glioblastoma multiforme (S24-GBM) cellular network and to explore its role on radio-resistance.Methods:Specific lentiviral vectors were used to knockout CX43 in S24-GBM stem cells (S24-GBMSCs). Alternatively, carbenoxolone (CBX) was used to block transmission of CX43. Subsequently, the animal subjects grafted with S24-GBMSCs were monitored under a multiphoton laser scanning microscope (MPLSM). Dynamic changes of tumor microtubes (TMs) and transmission of Ca 2+ and SR101 in the cellular network were recorded. To study the radiosenstivity of S24-GBM before and after CX43 inhibition, MRI scanning of the brains was taken before and after radiation to assess the tumor sizes. Survival time of each subject was also recorded. Results:In comparison with control group, knockout of CX43 in S24-GBMSCs led to shorter TMs, less TM connected cells, lower Ca 2+ synchronicity and SR101 fluorescence, as well as decreased tumor sizes and prolonged survival time (all P<0.01), which were independent from radiation. However, CBX only demonstrated inhibition on the growth of tumors and the diffussion of Ca 2+ and SR101, without affecting TMs formation. These above-mentioned alterations could be enhanced by the combination of gap43 knockout in S24-GBMSCs with blockage of CX43 by CBX (all P<0.05). Conclusion:CX43 plays a critical role in the radioresistance of S24-GBM by influencing the formation of S24-GBM cellular network and the transmission of important signaling molecules including Ca 2+ and SR101.

Bacterial stress response, physiological metabolism and antimicrobial tolerance and the control strategies / 生物工程学报

Overuse of antibiotics in medical care and animal husbandry has led to the development of bacterial antimicrobial resistance, causing increasingly more health concern. In addition to genetic mutations and the formation of resistance, the various stresses bacteria encountered in the natural environment trigger their stress responses, which not only protect them from these stresses, but also change their tolerance to antimicrobials. The emergence of antimicrobial tolerance will inevitably affect the physiological metabolism of bacteria. However, bacteria can restore their sensitivity to drugs by regulating their own metabolism. This article reviews recent studies on the relationship between bacterial stress responses or the physiological metabolism and antimicrobial tolerance, intending to take more effective measures to control the occurrence and spread of antimicrobial resistance.

Dose constraints of optic nerves and chiasm in locally advanced nasopharyngeal carcinoma patients treated with intensity-modulated radiotherapy / 中华放射肿瘤学杂志

Objective To investigate the tolerated dose of the optic nerves and chiasm in patients with locally advanced nasopharyngeal carcinoma(NPC)treated with intensity-modulated radiotherapy (IMRT). Methods A retrospective analysis was performed on dose characteristics and the incidence of radiation optic neuropathy in 108 patients with locally advanced NPC treated with IMRT at D 2>55 Gy in the optic nerves and chiasm in our hospital between May 2009 and December 2013. The Common Terminology Criteria for Adverse Events(CTCAE)Version 3.0 grading criteria were used for evaluating adverse reactions of the optic nerves and optic chiasm.A logistic regression analysis was performed to assess the risk factors for the development of radiation-induced optic neuropathy(RION). Results No patient had severe RION (grade 3-5),although 7 of the 108 patients had mild optic nerve disorder(grade 1-2). No patient-or treatment-related factors were found to be associated with the development of RION(P>0.05). With a median follow-up of 46 months(range,13-91 months),the 3-year estimated overall survival,local recurrence-free survival,and distant metastasis-free survival rates were 90.0%,94.5%,and 86.4%, respectively. Conclusions The dose constraint of<55 Gy derived for optic nerves and chiasm from conventional radiotherapy does not seem to apply to IMRT. For advanced NPC patients treated with IMRT, the dose constraints of optic nerves and chiasm might be relaxed in order to improve target coverage.

Investigation on immunization program coverage rate and its safety in children with tuberous sclerosis / 中华儿科杂志

Objective@#To investigate the status of immunization of National Immunization Program (NIP) and its adverse reaction rate in children with tuberous sclerosis.@*Method@#Questionnaire survey was adopted to identify the vaccination coverage and its adverse events; 72 cases of children with tuberous sclerosis and 78 normal controls (healthy children completing age-appropriate NIP) admitted to Chinese People′s Liberation Army General Hospital from December 2014 to November 2015 were involved into this study.@*Result@#The age-appropriate NIP coverage rate of tuberous sclerosis was 36%(26/72). The coverage rate of bacillus calmette-guerin (BCG), hepatitis B vaccine 1st to 3rd doses (HepB1-3), oral poliovaccine 1st dose (OPV1), diphtheria, pertussis and tetanus 1st dose (DPT1), DPT1-3, meningococcal polysaccharide vaccine group A (MPVA), measles amd rubella vaccine/measles vaccine 1st dose (MRV/MCV1), and Japanese encephalitis vaccine 1st dose (JEV1) were 100%(72 cases), 75%(51 cases), 97%(66 cases), 91%(62 cases), 82%(56 cases), 66%(45 cases), 69%(42 cases), and 61%(37 cases) respectively. The reasons why the children did not complete the vaccination plan were that parents were concerned about vaccination-induced seizures or seizures had not been controlled. Among 72 children with TSC, the rate of adverse events or suspected adverse events after vaccination was 17% (12 cases), which was higher than the normal control children (2 cases, 3%) (χ2=8.799, P<0.05). The main adverse events were seizure events, which accounted for 92%(11 cases).@*Conclusion@#The age-appropriate NIP coverage rate among children with tuberous sclerosis is low. The high incidence of adverse events may be associated with a fact that there are some nervous system abnormalities in cases with tuberous sclerosis. TSC children vaccination is relatively safe, with no serious adverse events.

Standardized management and effects for hospital′s humanistic nursing care / 中华医院管理杂志

Objective To explore the methods of the standardized management used in humanistic nursing care and to assess its effects.Methods Measures of the standardized management began to be used in such care at the hospital since January 2013.Questionnaires of patient satisfaction with nursing care for inpatients and those discharged were used to assess the effects of the standardized management measures periodically and synthetically.Results The patient satisfaction with humanistic nursing care keeps increasing year by year from 2013 to 201 5.The differences among three sets of data are statistically significant(P < 0.05 ).Conclusions Humanistic nursing care calls for promotion of standardized management.It is high time to build such a standardized management system at the hospitals.

A clinical analysis of 33 cases of Kimura's disease / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To improve the diagnosis and treatment of Kimura's disease (KD) by investigating its clinical characteristics, pathological features and complications.@*METHOD@#The clinical data of 33 cases of KD were analyzed retrospectively.@*RESULT@#Of 33 cases, 22 showed the mass on head and neck, while in the other cases, the mass distributed in the region of groin, axillary fossa, hilum of lung and mesentery. Regional lymph nodes were involved in 21 cases and major salivary glands were invaded in 8 cases. Twenty-three cases had typical peripheral eosinophilia, although only in 2 patients the quantity of serum total IgE increased markedly. Urine abnormalities happened to 7 cases, such as massive proteinuria (3 cases) and hematuria (2 cases). Among 6 cases which underwent bone marrow aspiration, 2 showed eosinophilia. Two cases were complicated with nephritic syndrome. Six cases were combined with local inflammation on head and neck and 2 cases were combined with malignant tumor.@*CONCLUSION@#Mass on the head and neck is the typical clinical manifestation in KD, with regional lymph nodes and major salivary glands involved most. Serum total IgE and histopathologic examination should always be done to confirm KD, especially in the cases with unknown eosinophilia increasing.

The different-dose simvastatin's effect on the platelet activity after the elderly patients' treatment by PCI / 中国实用内科杂志

Objective To observe the serum level of the CD62p,CD63 which indicates the platelet activity of the elderly patients treated by different-dose simvastatin after PCI.Methods Sixty-eight patients with acute coronary syndrome post PCI were randomly divided into 20 mg/d simvastatin group(36 patients)and 40 mg/d simvastatin group(32 patients).We examined the patient's blood CD62p,CD63 levels on the day before the treatment of PCI in both groups.Then all of the patients in both groups received different-dose simvastatin treatment(20mg/d or 40 mg/d qn po);we observed the results again after four weeks in both groups,and compared the results.Results The patients' blood CD62p,CD63 levels decreased significantly after the treatment of simvastatin in both groups(P