AIM:To investigate the effects of memantine(Mem),an N-methyl-D-aspartate(NMDA)recep-tor antagonist,on sevoflurane(Sev)anesthetic depth and perioperative neurocognitive disorders in mice,and to explore the possible mechanisms involved.METHODS:Mouse electroencephalogram(EEG)monitoring and cognitive disorder models were established.For EEG monitoring,male C57BL/6J mice were randomly divided into control group,Sev group,and Mem+Sev group.The EEG monitoring electrodes were implanted in the heads of the mice 7 d before anesthe-sia.On the day of anesthesia,the mice in Mem+Sev group received an intraperitoneal injection of 20 mg/kg Mem dissolved in normal saline,while those in control and Sev groups received intraperitoneal injection of an equivalent volume of normal saline based on body weight.Thirty minutes later,the mice in Sev and Mem+Sev groups were anesthetized with 400 mL/min O2+3%Sev for 5 h,while those in control group were treated with 400 mL/min O2 for 5 h.The EEG monitoring was ter-minated after the righting reflex was restored in Sev and Mem+Sev groups.The time of disappearance and recovery of the righting reflex was recorded,and changes in EEG burst suppression ratio and relative power of each frequency band were analyzed.For the cognitive disorder part,another batch of male C57BL/6J mice were selected and divided into the same groups as before.The mice underwent water maze spatial navigation training for 6 d before anesthesia.On the day of anes-thesia,the mice in Mem+Sev group received an intraperitoneal injection of 20 mg/kg Mem dissolved in normal saline,while those in control and Sev groups received intraperitoneal injection of an equivalent volume of normal saline based on body weight.Thirty minutes later,the mice in Sev and Mem+Sev groups were anesthetized with 400 mL/min O2+3%Sev for 5 h,and those in control group were treated with 400 mL/min O2 for 5 h.Spatial navigation and exploration tests were conducted 3 d after anesthesia.After the tests,the mice were sacrificed,and their hippocampal tissues were collected.The levels of interleukin-1β(IL-1β),tumor necrosis factor-α(TNF-α)and acetylcholine(ACh)in the hippocampal tis-sues were detected by ELISA.The concentration of Ca2+in the hippocampal tissues was measured using a calcium assay kit.Pathological changes in the hippocampal CA3 region were observed by HE staining,and the protein levels of NMDA receptor GluN1 subunit,GABAA receptor,amyloid β-protein(Aβ),and p-tau were detected by Western blot.RE-SULTS:Compared with control group,the mice in Sev group had increased burst suppression ratio at all time points dur-ing anesthesia and prolonged escape latency and reduced platform crossings 3 d after anesthesia(P<0.05).The levels of IL-1β and TNF-α in the hippocampal tissues increased,while the level of ACh decreased,and the concentration of Ca2+in-creased.The protein levels of GluN1 subunit,Aβ and p-tau were elevated(P<0.05).Compared with Sev group,the mice in Mem+Sev group had shortened anesthesia induction time and increased burst suppression ratio at all time points during anesthesia,with elevated relative power of slow waves and δ waves(P<0.05).The escape latency was shortened,and the platform crossings increased 3 d after anesthesia(P<0.05).The levels of IL-1β and TNF-α in the hippocampal tissues decreased,while the levels of ACh increased,and the protein levels of GluN1 subunit,Aβ and p-tau were reduced(P<0.05).There was no significant difference in anesthesia recovery time among the groups(P>0.05).CONCLU-SION:Memantine,in combination with Sev anesthesia,accelerates anesthesia induction and deepens anesthetic depth,which may be related to the increased relative power of δ EEG waves,but has no significant effect on recovery time.Me-mantine intervention alleviates Sev anesthesia-induced cognitive disorders by inhibiting the overexpression of NMDA recep-tors,Aβ and p-tau,and attenuating neuroinflammation.

AIM:To investigate the effects of memantine(Mem),an N-methyl-D-aspartate(NMDA)recep-tor antagonist,on sevoflurane(Sev)anesthetic depth and perioperative neurocognitive disorders in mice,and to explore the possible mechanisms involved.METHODS:Mouse electroencephalogram(EEG)monitoring and cognitive disorder models were established.For EEG monitoring,male C57BL/6J mice were randomly divided into control group,Sev group,and Mem+Sev group.The EEG monitoring electrodes were implanted in the heads of the mice 7 d before anesthe-sia.On the day of anesthesia,the mice in Mem+Sev group received an intraperitoneal injection of 20 mg/kg Mem dissolved in normal saline,while those in control and Sev groups received intraperitoneal injection of an equivalent volume of normal saline based on body weight.Thirty minutes later,the mice in Sev and Mem+Sev groups were anesthetized with 400 mL/min O2+3%Sev for 5 h,while those in control group were treated with 400 mL/min O2 for 5 h.The EEG monitoring was ter-minated after the righting reflex was restored in Sev and Mem+Sev groups.The time of disappearance and recovery of the righting reflex was recorded,and changes in EEG burst suppression ratio and relative power of each frequency band were analyzed.For the cognitive disorder part,another batch of male C57BL/6J mice were selected and divided into the same groups as before.The mice underwent water maze spatial navigation training for 6 d before anesthesia.On the day of anes-thesia,the mice in Mem+Sev group received an intraperitoneal injection of 20 mg/kg Mem dissolved in normal saline,while those in control and Sev groups received intraperitoneal injection of an equivalent volume of normal saline based on body weight.Thirty minutes later,the mice in Sev and Mem+Sev groups were anesthetized with 400 mL/min O2+3%Sev for 5 h,and those in control group were treated with 400 mL/min O2 for 5 h.Spatial navigation and exploration tests were conducted 3 d after anesthesia.After the tests,the mice were sacrificed,and their hippocampal tissues were collected.The levels of interleukin-1β(IL-1β),tumor necrosis factor-α(TNF-α)and acetylcholine(ACh)in the hippocampal tis-sues were detected by ELISA.The concentration of Ca2+in the hippocampal tissues was measured using a calcium assay kit.Pathological changes in the hippocampal CA3 region were observed by HE staining,and the protein levels of NMDA receptor GluN1 subunit,GABAA receptor,amyloid β-protein(Aβ),and p-tau were detected by Western blot.RE-SULTS:Compared with control group,the mice in Sev group had increased burst suppression ratio at all time points dur-ing anesthesia and prolonged escape latency and reduced platform crossings 3 d after anesthesia(P<0.05).The levels of IL-1β and TNF-α in the hippocampal tissues increased,while the level of ACh decreased,and the concentration of Ca2+in-creased.The protein levels of GluN1 subunit,Aβ and p-tau were elevated(P<0.05).Compared with Sev group,the mice in Mem+Sev group had shortened anesthesia induction time and increased burst suppression ratio at all time points during anesthesia,with elevated relative power of slow waves and δ waves(P<0.05).The escape latency was shortened,and the platform crossings increased 3 d after anesthesia(P<0.05).The levels of IL-1β and TNF-α in the hippocampal tissues decreased,while the levels of ACh increased,and the protein levels of GluN1 subunit,Aβ and p-tau were reduced(P<0.05).There was no significant difference in anesthesia recovery time among the groups(P>0.05).CONCLU-SION:Memantine,in combination with Sev anesthesia,accelerates anesthesia induction and deepens anesthetic depth,which may be related to the increased relative power of δ EEG waves,but has no significant effect on recovery time.Me-mantine intervention alleviates Sev anesthesia-induced cognitive disorders by inhibiting the overexpression of NMDA recep-tors,Aβ and p-tau,and attenuating neuroinflammation.

Objective: In this study, we tested for the presence of four human coronaviruses (HCoVs) in children with respiratory tract disease in Fuzhou, Fujian, China. Methods: Nasopharyngeal aspirates were collected from children with respiratory tract disease from Nov, 2007 to Jan, 2015. A total of 266 clinical samples were tested for HCoVs using reverse-transcription polymerase chain reaction (RT-PCR). The positive products were sequenced and compared with those in GenBank by BLAST. The positive samples were then tested for HCoV-HKU1 and HCoV-NL63 using RT-PCR method . We compared the 440 bp pol gene sequence of the 8 HCoV isolates in Fuzhou, China to other HCoV isolates documented in the GenBank database by using MEGA software version 6.06 and the neighbor-joining method . Results: HCoVs were detected in 8 patients (3.0%) out of the 266 children. Two of 266 (0.38%) were positive for HCoV-HKU1; 1 of 266(0.38%)were positive for HCoV-NL63; 1 of 266 (0.38%) were positive for HCoV-229E; 4 of 266 (1.5%)were positive for HCoV-OC43. All of children who were positive for HCoV had respiratory illness. Two HCoV-HKU1 were found to co-infect with human parainfluenza virus type 3 (HPIV-3). The 8 HCoV strains in our study fell into four clusters. Two strains of HCoV-HKU1 were genotype A. Conclusions HCoV infections were probably associated with upper and lower respiratory illness in children. Additional studies are needed to investigate the potential roles of these HCoVs in diseases.

Objective To evaluate the effect of pidotimod combined with antibacterials on the immunologic functions and clinical curative efficacy for patients undergoing recurrent respiratory tract infections.Methods Patients with recurrent respiratory tract infections (150 cases) were enrolled in Matemal and Child Health Hospital of Guangyuan from August 2013 to January 2016,which divided to two groups randomly,Group A (n =75) accepted traditional antibacterials treatment,and Group B (n =75) adopted pidotimod combined with antibacterials.The clinical symptom and immunologic functions of patients during treatment were tested,and the clinical curative efficacy of patients was evaluated in the follow-up period.Results After treatment,the disappear time of cough,fever,tonsil inflammation and pulmonary wheezing in treatment group was significantly shorter than that of control group (P ＜ 0.05).After treatment,the levels of serum immunoglobulin in two groups were higher than those before treatment (P ＜ 0.05),and the treatment group was significantly higher than control group (P ＜ 0.05).After treatment,the relative activities of CD3+,CD4+,CD8+,and NK cells in two groups increased significantly (P ＜ 0.05),the relative content of CD4+/CD8+ was also increased (P ＜0.05),and the improvement of above indexes in the treatment group was more obvious than those in control group (P ＜ 0.05).After treatment,total effective rate of treatment group was significantly higher than that of control group (P ＜ 0.05),the recurrence of infection in the treatment group is significantly lower than that in the control group (P ＜ 0.05),and the recurrence duration was significantly shorter than control group (P ＜ 0.05).Conclusion The clinical curative of pidotimod combined with antibacterials was remarkable for patients of recurrent respiratory tract infections,which deserved popularization not only improving the immunologic functions,but also decreasing the times of recurrence.

There are three types of glial cells in(for short): sheath glia, socket glia and glutamate receptor glia. They are mainly located in four sensory organs including the amphid, the cephalic organ, the outer labial sensilla and the inner labial sensilla.glial cells play key roles in dendrite extension, neurite guidance and extension, and are essential for synaptogenesis and maintain the normal morphology and the function of sensory nerve endings as well. A recent study shown that some nematode neurons are derived from the glial cells. Moreover, nematodes glial cells can directly modulate the function of sensory neurons. Some glial cells can also respond to certain external stimuli, such as mechanical stimulation, and adjust the accompanying neuronal activities.The article summarizes the progress on effects of nematodes glial cells on the nervous system development and function.

Objective To investigate the dynamic changes of lymphocyte subsets (lymphocyte count, CD3 +T,CD4 +T,CD8 +T,CD19 +B,CD56 +NK)in children with septic shock.Methods Peripheral blood lymphocyte subsets were analysed in 25 cases with severe septic shock and 24 cases with mild septic shock on day 1 ,3,8,and compared with those of 25 healthy volunteers.Children with severe septic shock were divided in-to survival group and dying group according to the outcome.The detection data were compared.Results In the first day of admission,peripheral blood lymphocyte subsets in children with septic shock decreased significantly compared with the normal children,and there was significant difference in the three groups(P <0.05 ).In the third day of admission,children with mild septic shock had statistical increase of CD4 +T,CD3 +T and lympho-cyte count(P <0.05),and children with severe septic shock had statistical decrease of lymphocyte subsets ex-cept CD56 +NK.In the eighth day of admission,children with mild septic shock had no significant difference in CD4 +T lymphocyte count compared with control group(P >0.05),but children with severe septic shock had statistical increase of CD4 +T,CD3 +T and lymphocyte count(P <0.05).There were 5 cases died who had se-vere septic shock in day 2 to day 5 after admission.The count of lymphocyte subsets were detected significantly lower in dying group than survival group in the third day of admission(P <0.05).Conclusion The continuous low level of lymphocyte subsets indicates bad outcome.The patientˊs condition improved with increase of CD4 +T,CD3 +T,lymphocyte count.CD4 +T is the most sensitive.Dynamic detection of lymphocyte subsets in the pe-ripheral blood of children with septic shock is of great clinical significance in judging the severity of disease and cura-tive effect.

Objective To explore the clinical results and complications of the traditional skeletal traction through olecranon on treating the irreducible humeral supracondylar fracture in children with of ulna.Methods Ninety-eight children patients of humeral supracondylar fracture with failure of reduction manipulation were selected as our subjects.The towel clamp-skeletal traction through olecranon of ulna was applied as the additional treatment methods.Meanwhile 5-24 months' follow-up were performed.Results According to Flynn elbow joint function evaluation standard.The curative effect was as followed.71 patients (74.7％) got the excellent outcome,17 patients (17.9％) for good outcome and 7 patients for improved utcome(7.3％).Therefore,the ratio of excellent operation reached to 92.6％.Conclusion The towel clampskeletal traction through olecranon of ulna might be an effective method to treat reliable fixation regarding of its high curing rate and simple process of performance.

Objective To detect the microvessel density(MVD) marked by MIF protein in esophagus squamous cell carcinoma(ESCC), and to see if a relationship exists between microvessel density(MVD) and clinicopathologic features. Methods The expression of MIF in vascular endothelial cell in forty ESCC specimens was examined by immunohistocbemistry staining, calculated the mean of MVD and analysed the relationship with clinicopathologic features. Results The positive rate of MIF protein was 95.00 %(38/40) in ESCC vascular endothelial cell. Compared with the normal esophageal squamous tissue[32.50 %(13/40)], there was significant difference in statistics, the mean of MVD was 26.5±8.5. MVD was positively correlated with the tumor TNM stages and lymph node motastasis. Conclusion MIF can be used in tagging vascular endothelial cell, MVD of ESCC was positively correlated with the tumor TNM stages and lymph node metastasis. It might be an major prognostic factor in ESCC.

Using the large scale sequencing, a novel human cDNA of 1,645 bp was screened from the cDNA library of human fetal brain. The cDNA contains an ORF encoding a 296-aa protein with a calculated molecular weight of 34.0 KD. Compared with that of current sequence databases, the putative protein was found to have 36% homology with protein-disulfide isomerase (PDI). So this cDNA was named PDI like (PDI-L) gene. Multiple tissue Northern blot analysis shows that PDI-L cDNA is expressed in heart, brain, liver, kidneys and so on. The ORF fragment of PDI-L cDNA was inserted into reconstructed pBV220 expression vehicle and its predicted expressive protein was obtained.
Amino Acid Sequence ; Base Sequence ; Cloning, Molecular ; DNA, Complementary ; genetics ; Gene Library ; Humans ; Protein Disulfide-Isomerases ; biosynthesis ; genetics

AIM: To study the activation effects of maize pollen polysaccharides(PPM) on human thoracic cavity macrophage (hTM). METHODS: Activities of lactate dehydrogenase(LDH) and acid phosphatase (ACP) in the hTM were detected by automatic biochemical analyzer, and the level of tumor necrosis factor alpha(TNF-?) and interleukin-6(IL-6) in the hTM was analyzed by radioimmunoassay, after hTM were cultured with 0.312,0.625, 1.250, 2.500, 5.000 mg/mL PPM-RPMI 1640 for 24 and 48 hours in vitro. RESULTS: The activities of LDH and ACP increased in the hTM induced by PPM, and the levels of TNF-? and IL-6 in the hTM induced by PPM increased markedly too. And the induced expression effect of TNF-? and IL-6 is associated with the concentration of PPM, and time for PPM inducing. CONCLUSION: PPM can induce cytokines secretion in hTM,and activate hTM in vitro.