Antibacterial effect of low-temperature plasma on Enterococcus faecalis in dentinal tubules in vitro / 北京大学学报(医学版)

OBJECTIVE@#To construct a model of Enterococcus faecalis (E. faecalis) infection in dentinal tubules by gradient centrifugation and to evaluate the antibacterial effect of low-temperature plasma on E. faecalis in dentinal tubules.@*METHODS@#Standard dentin blocks of 4 mm×4 mm×2 mm size were prepared from single root canal isolated teeth without caries, placed in the E. faecalis bacterial solution, centrifuged in gradient and incubated for 24 h to establish the model of dentinal tubule infection with E. faecalis. The twenty dentin blocks of were divided into five groups, low-temperature plasma jet treatment for 0, 5 and 10 min, calcium hydroxide paste sealing for 7 d and 2% chlorhexidine gel sealing for 7 d. Scanning electron microscopy and confocal laser scanning microscope were used to assess the infection in the dentinal tubules and the antibacterial effect of low-temperature plasma.@*RESULTS@#The results of scanning electron microscopy and confocal laser scanning microscopy showed that after 24 h of incubation by gradient centrifugation, E. faecalis could fully enter the dentinal tubules to a depth of more than 600μm indicating that this method was time-saving and efficient and could successfully construct a model of E. faecalis infection in dentinal tubules. Low-temperature plasma could enter the dentinal tubules and play a role, the structure of E. faecalis was still intact after 5 min of low-temperature plasma treatment, with no obvious damage, and after 10 min of low-temperature plasma treatment, the surface morphology of E. faecalis was crumpled and deformed, the cell wall was seriously collapsed, and the normal physiological morphology was damaged indicating that the majority of E. faecalis was killed in the dentinal tubules. The antibacterial effect of low-temperature plasma treatment for 10 min exceeded that of the calcium hydroxide paste sealing for 7 d and the 2% chlorhexidine gel sealing for 7 d. These two chemicals had difficulty entering deep into the dentinal tubules, and therefore only had a few of antibacterial effect on the bacterial biofilm on the root canal wall, and there was also no significant damage to the E. faecalis bacterial structure.@*CONCLUSION@#Gradient centrifugation could establish the model of E. faecalis dentin infection successfully. Low-temperature plasma treatment for 10 min could kill E. faecalis in dentinal tubules effectively, which is superior to the calcium hydroxide paste sealing for 7 d and the 2% chlorhexidine gel sealing for 7 d.

Current status and research advances on drug sedation and analgesia in burn children / 中华烧伤杂志

Children are high-risk groups of burns, with unique physiological, psychological, and anatomical states, and the management of anxiety and pain for burn children are extremely challenging. Non-pharmacological interventions are very important for pain management in burn children, but are often inadequate for treating pain and anxiety, so pharmacological sedation and analgesia are necessary. This article reviewed the clinical treatment and research progress in this field in the past 10 years at home and abroad, including the pain assessment of burn children, monitoring in sedative and analgesic treatment, main therapeutic drugs and research progress, and some controversies in clinical practice. Besides, some suggestions have been put forward for clinical reference.

Effect of acupuncture combined with rehabilitation training on cognitive function and amino acid metabolism in children with cerebral palsy / 中国针灸

OBJECTIVE@#To observe the effect of acupuncture combined with rehabilitation training on cognitive function and amino acid metabolism in children with cerebral palsy.@*METHODS@#Twenty children with cerebral palsy (cerebral palsy group) were randomly divided into an acupuncture and rehabilitation group (11 cases) and a rehabilitation group (9 cases), and 10 healthy children were included as the normal group. The rehabilitation group was treated with rehabilitation training, 30 min each time; on the basis of rehabilitation training, the acupuncture and rehabilitation group was treated with acupuncture at Sishenzhen, Zhisanzhen, Naosanzhen, Niesanzhen, Dazhui (GV 14), Shenzhu (GV 12), Mingmen (GV 4), etc. The Sishenzhen (left and right points) and the ipsilateral Niesanzhen were respectively connected with a group of electrodes, intermittent wave, frequency of 2 Hz for 30 min. Both groups were treated once every other day, three times a week, totaling for 3 months. The Gesell developmental diagnostic scale (GESELL) was used to evaluate the developmental quotient (DQ) scores before and after treatment, and the blood samples of children with cerebral palsy before and after treatment and normal children were collected for amino acid metabolomics.@*RESULTS@#Compared before treatment, the DQ scores of adaptation, fine motor and social in the acupuncture and rehabilitation group was increased after treatment (@*CONCLUSION@#Acupuncture combined with rehabilitation training could improve cognitive function in children with cerebral palsy, and the effect may be related to the down-regulation of L-histidine and L-citrulline metabolism.

Xuefu Zhuyu Oral Liquid () Prevents Apoptosis of Ischemic Myocardium Cells in Rats by Regulating SIRT1 and Its Pathway-Related Genes / 中国结合医学杂志

OBJECTIVE@#To observe the changes of ischemic myocardial cells apoptosis in rats following intervention with Xuefu Zhuyu Oral Liquid (, XFZY), as well as changes of protein expression of silent information regulator 1 (SIRT1) and SIRT1 pathway-related genes.@*METHODS@#H9c2 rat myocardial cells were divided into 6 groups: control group, oxygen glucose deprivation (OGD) group, SIRT1 siRNA group, OGD+SIRT1 siRNA group, OGD+XFZY group, and OGD+SIRT1 siRNA+XFZY group. Quantitative fluorescent polymerase chain reaction (PCR) and Western blot were used to detect the concentration variations of SIRT1 and its pathway-related genes and corresponding protein expression after XFZY intervention and SIRT1 transfection.@*RESULTS@#Compared with the control group, the mRNA and protein expressions of SIRT1 were decreased obviously, while the mRNA and protein levels of P53, FoxO1, FoxO3, FoxO4 and nuclear factor kappa B (NF-ΚB) were increased in the OGD group, SIRT1 siRNA group, and OGD+SIRT1 siRNA group (P<0.01). Compared with the OGD group and OGD+SIRT1 siRNA group, the treatment of XFZY inhibited the decline in SIRT1 mRNA and protein expressions (P<0.01), and down-regulated the mRNA and protein levels of P53, FoxO1, FoxO3, FoxO4 and NF-ΚB, respectively (P<0.05 or P<0.01).@*CONCLUSION@#XFZY could prevent myocardial cells apoptosis probably by increasing the mRNA and protein expressions of SIRT1 and inhibiting the mRNA and protein expressions of P53, NF- K B, FoxO1, FoxO3 and FoxO4.

Professor 's academic thoughts and acupoint selection experience for hot flashes / 中国针灸

Professor is a well-known national veteran doctor with over 70 years of clinical experience. He has unique academic thoughts and clinical experience for common diseases and some difficult and complicated diseases. This paper mainly introduces professor 's syndrome-differentiation thought and experience of acupoint selection for hot flashes. It is emphasized that common hot flashes, such as hot flashes and night sweats, are different between and . While regulating and , more attention should be paid to - harmony, which is not only suitable for women's perimenopausal syndrome, but also for a series of clinical diseases caused by refractory drugs such as endocrine therapy after breast cancer surgery. At the same time of acupoint selection based on syndrome differentiation, a more rational prescriptions should be made according to the duration of the disease and the experience acupoints to improve the clinical efficacy.

Chinese tuina downregulates the elevated levels of tissue plasminogen activator in sciatic nerve injured Sprague-Dawley rats / 中国结合医学杂志

<p><b>OBJECTIVE</b>To elucidate the mechanism of Chinese tuina in treating sciatic nerve crush injury, and to detect the levels of tissue plasminogen activator (tPA) and plasminogen activator inhibitor-1 (PAI-1), which is thought to play an important role in nerve regeneration.</p><p><b>METHODS</b>Thirty-two adult male Sprague-Dawley rats were subjected to sciatic nerve crush injury and 16 rats (sham-operated group) went through a sham operation. Control group was given no treatment while tuina group received tuina therapy since day 7 post-surgery. Tuina treatment was performed once a day and lasted for 20 days. The sciatic functional index was examined every 5 days during the treatment session. The rats' gastrocnemius muscles were evaluated for changes in mass and immunohistochemistry techniques were performed to detect the levels of tPA and PAI-1.</p><p><b>RESULTS</b>Tuina therapy improved the motor function of sciatic nerve injured rats (P<0.05), however, it did not increase muscle volume (P<0.05). Tuina downregulated the levels of tPA and PAI-1 (P<0.05).</p><p><b>CONCLUSIONS</b>The present study implies that tuina treatment could accelerate rehabilitation of peripheral nerve injury.</p>

Protective effects of traditional Tibetan medicine Zuo-Mu-A Decoction () on the blood parameters and myocardium of high altitude polycythemia model rats / 中国结合医学杂志

<p><b>OBJECTIVE</b>To explore the protective effects of Tibetan medicine Zuo-Mu-A Decoction (, ZMAD) on the blood parameters and myocardium of high altitude polycythemia (HAPC) model rats.</p><p><b>METHODS</b>Forty male Wistar rats were randomly divided into 4 groups by a random number table, including the normal, model, Rhodiola rosea L. (RRL) and ZMAD groups (10 in each group). Every group was raised in Lhasa to create a HAPC model except the normal group. After modeling, rats in the RRL and the ZMAD groups were administered intragastrically with RRL (20 mL/kg) and ZMAD (7.5 mL/kg) once a day for 2 months, respectively; for the normal and the model groups, 5 mL of distilled water was administered intragastrically instead of decoction. Then routine blood and hematologic rheology parameters were taken, levels of erythropoietin and 8-hydroxy-2'-deoxyguanosine (8-OHdG) were tested, and ultrastructural change in the left ventricular myocardium was observed using transmission electron microscopy.</p><p><b>RESULTS</b>Compared with the model group, ZMAD significantly reduced the red blood cell count, hemoglobin levels, whole blood viscosity at low/middle shear rates, plasma viscosity, erythrocyte electrophoretic time, erythropoietin and 8-OHdG levels, and also increased the erythrocyte deformation index (P<0.05). There was no difference in all results between the RRL and the ZMAD groups. The cardiac muscle fibers were well-protected, mitochondrial matrix swelled mildly and ultrastructure changes were less prominent in the ZMAD group compared with the model group.</p><p><b>CONCLUSION</b>ZMAD has significant protective effects on the blood parameters against HAPC, and also has the beneficial effect in protecting against myocardial injury.</p>

Analysis on cause of death in residents of Minhang District of Shanghai from 1996 to 2015 / 复旦学报（医学版）

Objective To analyze changes and trends of the mortality and causes of death in the residents of Minhang District of Shanghai from 1996 to 2015.Methods Crude death rates (CDR) and age-standardized death rates (ADR) were calculated,respectively.Joinpoint regression was used to analyze the trends in the leading causes of death.Permutation test was used to find whether the joinpoints were statistically significant based on P value＜0.05.Results The elderly population in Minhang District accounted for 18.07％ of the total population in 2015,which increased by 73.89％ than it in 1996.The CDRs of all causes for resent 20 years gradually increased with the annual percentage change (APC) of 0.62％ (P＜0.05),but decreased significantly after standardization (APC =-3.73％,P＜0.05).In 2015,the top five causes of death were circulatory disease;neoplasms;respiratory disease;endocrine,nutritional and metabolic diseases;injury and poisoning in the total population,males and females registered in Minhang District.ADRs of circulatory disease,neoplasms,respiratory disease and injury and poisoning decreased to-3.16％,-1.86％,-8.03％ and -4.96 ％,respectively (P＜0.05).ADRs of endocrine,nutritional and metabolic diseases significantly increased during 1996 to 2001 (APC=16.58％,P＜0.05) and thereafter remained stable.Conclusions The issue of population aging in Minhang District is getting worse,and chronic non-communicable diseases and injury and poisoning can be identified as major public health concerns at present.

Analysis on cause of death in residents of Minhang District of Shanghai from 1996 to 2015 / 复旦学报（医学版）

Objective To analyze changes and trends of the mortality and causes of death in the residents of Minhang District of Shanghai from 1996 to 2015.Methods Crude death rates (CDR) and age-standardized death rates (ADR) were calculated,respectively.Joinpoint regression was used to analyze the trends in the leading causes of death.Permutation test was used to find whether the joinpoints were statistically significant based on P value＜0.05.Results The elderly population in Minhang District accounted for 18.07％ of the total population in 2015,which increased by 73.89％ than it in 1996.The CDRs of all causes for resent 20 years gradually increased with the annual percentage change (APC) of 0.62％ (P＜0.05),but decreased significantly after standardization (APC =-3.73％,P＜0.05).In 2015,the top five causes of death were circulatory disease;neoplasms;respiratory disease;endocrine,nutritional and metabolic diseases;injury and poisoning in the total population,males and females registered in Minhang District.ADRs of circulatory disease,neoplasms,respiratory disease and injury and poisoning decreased to-3.16％,-1.86％,-8.03％ and -4.96 ％,respectively (P＜0.05).ADRs of endocrine,nutritional and metabolic diseases significantly increased during 1996 to 2001 (APC=16.58％,P＜0.05) and thereafter remained stable.Conclusions The issue of population aging in Minhang District is getting worse,and chronic non-communicable diseases and injury and poisoning can be identified as major public health concerns at present.

Study Progress in Combined Application of Chinese Medicines and 5-Hydroxytryptamine Reuptake Inhibi-tors / 中国药师

At present, selective 5-hydroxytryptamine (5-HT) reuptake inhibitors (SSRIs) and 5-HT and noradrenaline (NA) re-uptake inhibitors ( SNaRI) are the first choice for the clinical treatment of depression, however, the clinical adverse effects of the drugs have become a prominent problem affecting the clinical efficacy. Chinese medicines have some experience in the treatment of depres-sion, and the combined use with the above antidepressants can enhance the efficacy and / or reduce the adverse effects. The article re-viewed the status of the combination of SSRIs and Chinese medicines in order to provide reference for the clinical treatment of depres-sion.

Clinical Research Progress in Traditional Chinese Medicines Combined with Dopa Preparations in the Treatment of Parkinson' s Disease / 中国药师

Dopa preparations are currently first choice for the clinical treatment of Parkinson' s disease. With the application time extension and the dose increase of dopa preparations, the therapeutic effect is smaller and smaller, while the side effects are more and more significant, which have become the main problems affecting their clinical application. The current researches showed that the combination of traditional Chinese medicines and dopa preparations can improve the efficacy, decrease the dose of western medicines, reduce the adverse effects and so on. The paper reviewed the progress in the combination of dopa preparations and traditional Chinese medicines in the treatment of Parkinson' s disease in recent ten years.

Clinical Study Progress in Tumor Radiotherapy Combined with Traditional Chinese Medicines with Synergistic and Attenuated Effects / 中国药师

Radiotherapy is one of the main means of clinical treatment for cancer, although the continuous updating and development of technology and equipment, adverse reactions and side effects can't be avoided yet.Improving the clinical efficacy of radiotherapy and reducing its adverse reactions are the currently facing subjects.A large number of clinical studies showed that using traditional Chinese medicines(TCM)in tumor radiotherapy had significant effects of improving and controlling the clinical symptoms, improving the life quality of cancer patients, improving the sensitization of radiotherapy, preventing the tumor metastasis and recurrence, as well as improving immune function and long-term survival, etc.Meanwhile, TCM also had significant roles in reducing the damage of radioactive inflammation, decreasing the bone marrow suppression to improve peripheral blood, and reducing the toxicity of digestive system, etc.The combination of radiotherapy and TCM provides a broader space for the comprehensive treatment of tumors.

Synergistic and Attenuated Effects of Traditional Chinese Medicines on Doxorubicin Chemotherapy / 中国药师

Doxorubicin as a member of the anthracycline-based drugs, is widely used in cancer chemotherapy, while its significant cardiac toxicity and cytotoxicity limit its application to some extent.Therefore, it's a valuable exploring topic on how to improve the effect and reduce the adverse drug reactions of doxorubicin chemotherapy.This paper attempted to analyze the literatures about TCM combined with doxorubicin in nearly 15 years, including clinical use and experimental studies, to provide reference for the clinical application.

Preliminary analysis of bitter substances in spica of Prunella vulgaris / 中国中药杂志

Volatile oil components and the contents and types of amino acid in spica of Prunella vulgaris were analysed by GC-MS and amino acid analyzer. Esters, fatty acids, aromatic hydrocarbon, ketone and several alcohol compounds were identified by mass spectrum comparison. In these ingredients, beta-ionone smelled aroma of cedar, raspberry, nerolidol showed weak sweet soft orange blossom flavor, neroli tasted sweet and fresh, nerolidol tasted sweet with light aroma of wood, hexadecanal showed a weak aroma of flowers and wax, alpha-sinensal had rich and fresh sweet orange flavor. To some extent, these types of aromatic substances can affect the taste of herbal tea or decoction made of Spica Prunellae. Among amino acids detected, natural amino acids accounted for a larger proportion, and those natural amino acids showed bitterness, slight bitterness, sourness (freshness), sweetness, slight sweetness, sourness (slight freshness). The results indicated that bitter and slightly bitter amino acids have the greatest impacts on the sense of Spica Prunellae.

Effect of HSV-1 infection on NGF and its receptor expression in human glioma cells / 病毒学报

Nerve growth factor (NGF) is mainly secreted by the neuroglia cells, which can exert biological effect through its receptors on the specific target cell surface. NGF is closely related to neurocyte growth, differentiation and apoptosis. As a neurotropic virus, HSV-1 an easily lead to neurocyte, neuroglia cells death or apoptosis. In this study, the U251 human glioma cells were chosen as target cells to study the change of NGF and its receptors in the apoptosis process of HSV-1 infection. Our results showed that U251 cells were permissive to HSV-1 replication. In the apoptosis process of HSV-1 infected U251 cells, the expression of both NGF and P75NTR increased and then decreased, while the expression of TrkA decreased gradually. These result indicated that HSV-1 was able to induce the abnormal expression of NGF and its receptors in U251 cells.

The expression and anti-apoptotic function of HCMV IE2 protein controlled by Tet-On system / 病毒学报

During the infection of host cells, IE2 protein is one of the first and most abundantly expressed products of HCMV genome, which plays an important role in the controlling of cell cycle and apoptosis. But the correlation between expression level and anti-apoptotic activity of IE2 protein is still not clear. In this study, we successfully established a HCMV IE2 protein expression cell line that was controlled by Tet-On system. The effect of IE2 protein on cell apoptosis and the expression of p53 was detected under different condition of induction. Our results showed that the IE2 protein could inhibit cell apoptosis induced by TNF-alpha. Additionally, the anti-apoptotic activity of IE2 protein seemed to be relevant to its expression level. However, we failed to detect any difference of p53 expression between the IE2 protein expression and non-expression cells. These data indicated that the IE2 protein might inhibit cell apoptosis through regulating different signal pathways.

Effect of human cytomegalovirus infection on nerve growth factor expression in human glioma U251 cells / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To explore the change of endogenic nerve growth factor (NGF) expression in human glioma cells infected with human cytomegalovirus (HCMV).</p><p><b>METHODS</b>U251 cells were cultured in RPMI 1640 culture medium and infected with HCMV AD169 strain in vitro to establish a cell model of viral infection. Morphologic changes of U251 cells were observed under inverted microscope before and after infection with HCMV. Expression of NGF gene and protein of cells was detected by RT-PCR and Western blotting before and after infection with HCMV.</p><p><b>RESULTS</b>The cytopathic effects of HCMV-infected cells appeared on day 5 after infection. However, differential NGF expression was evident on day 7. NGF expression was decreased significantly in U251 cells on day 7 after infection in comparison with control group (P < 0.05).</p><p><b>CONCLUSION</b>HCMV can down-regulate endogenous NGF levels in human glioma cell line U251.</p>

Using the SELDI Protein Chip System to Detect Changes in Protein Expression in Vero Cells after Infection / 中国病毒学

Human herpes simplex virus 1 (HSV-1) causes facial,ocular,and encephalitic disease and is associated with latent infection and cancer.Here,we developed a means of studying the pathogenesis of HSV-1 infection at the protein level by using the SELDI Protein Chip to detect changes of protein expression in Vero cells cultured in vitro.After infection with HSV-1 and culture for 12,24 or 48 h,cells were harvested and lysed.IMAC3 arrays were applied to SELDI-TOF-MS to detect proteomic differences before and after infection.The chip detected a series of differentially expressed protein peaks.Interestingly,both peaks at 16 912 Da and 17 581 Da corresponded precisely with the molecular mass of ISG 15,which may participate in antiviral activity during the process of infection.Thus,the results we obtained can serve as a basis to study the pathogenesis of HSV-1 and the interaction between the virus and its host.In addition,they can help in the discovery of new therapeutic targets for treatment of HSV-1 infection.