Objective To explore the expression of 10 kDa interferon-gamma-induced protein(IP-10)in pathological scar and its role in the pathogenesis of pathological scar.Methods Imrnunohistochemistry was performed to detect the expression and distribution of IP-10 in 28 patients with keloid(group K),34 patients with hypertrophic scar(group HS),and 20 normal controls(group N).The data were collected and analyzed statistically.Results The expression of IP-10 was significantly higher in groups K and HS than in group N(P＜0.01),but no significant difference in the expression of IP-10 was found between groups K and HS.Conclusion IP-10 may enhance the formation of pathological scar by attracting T lymphocytes and inducing immune/inflammatory response.

Adolescent ; Adult ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Hepatitis B, Chronic ; drug therapy ; Humans ; Injections, Intravenous ; Male ; Middle Aged ; Phytotherapy ; RNA ; administration & dosage ; Salvia miltiorrhiza ; chemistry

Natural killer (NK) cells, as an essential part of innate immunity, can directly identify and kill tumor cells after being activated by the synergistic action of surface inhibitory receptors and activated receptors. It can secrete cytokines to recruit dendritic cells (DCs), induce DCs maturation and enhance adaptive immune response. It can target cancer stem cells (CSCs) and circulating tumor cells (CTCs) to inhibit cancer metastasis. NK cells have a unique inflammatory tendency, which can respond to cytokines and chemokines released from tumor sites and migrate to tumor sites, making them occupy an important advantage in cancer targeted therapy. The research on cancer targeted therapy of NK cells as drug delivery carriers, NK cell membrane-coated biomimetic nanoparticles, and NK cell extracellular vesicles (NKEVs) has attracted more and more attention. The article will focus on the mechanism of NK cells inhibiting cancer, and summarize the research progress of cancer targeted therapy of NK cells.

Objective To evaluate a new enzyme-linked immunospot assay (TSPOT-TB) for the diagnosis of latent tuberculosis infection in patients with rheumatic diseases.Methods The rapid TSPOT-TB assay was applied to detect ESAT-6 and CFP-10 specific T cells in blood samples from 126 rheumatic disease patients.A PPD skin test was performed on all patients simultaneously.Results The positive rate of TSPOT assay was 23.8% and that of PPD skin test was 34.9%.The overall agreement between the 2 tests was 71.4%.Among PPD (-) patients (n=82),11 were TSPOT (+) ( 13.4% ).Among PPD (+) patients (n=44),25 were TSPOT(-) ( 56.8% ).The patients who got BCG vaccination showed a significantly higher rate of positive results of PPD skin test than those who did not(41% vs 19%,P＜0.05).While in TSPOT assay,the BCG vaccination did not show any influence on TSPOT results (22% vs 27%,P＞0.05).Conclusion BCG vaccina-tion affects the results of PPD test in patients with rheumatic diseases,but has no influence on TSPOT results.The infection rate of latent tuberculosis in patients with rheumatic diseases in our study is 23.8% detected by TSPOT.

Objective To compare the efficacy of the conventional PPD skin test and a new enzymelinked immunospot assay(TSPOT-TB)for diagnosing latent tuberculosis infection(LTBI)in patients with rheumatic diseases.Methods Two hundred and sixty rheumatic patients were enrolled,and all were screened for LTBI based on clinical history,chest X-ray,PPD skin test or TSPOT.Results The positive rate of TSPOT assay was 24.1%and that of PPD skin test was 39.4%.The overall concordance rate between the 2tests was 61.0%.Among PPD negative patients (n=149).29 were TSPOT(+)(19.5%).Among PPD(+)patients(n=98),69 were TSPOT(-)(70.0%).The patients who got BCG vaccination or had history of tuberculosis infection showed a significantly higher rate of positive result of PPD skin test than those who did not (P<0.05 or P<0.01).While in TSPOT assay,the BCG vaccination or history of tuberculosis infection did not show influence on TSPOT results(P>0.05).Of the 127 patients who received biological agents after screening for LTBI,9 patients were pretreated with isoniazide.Twenty-seven patients stopped biological agent treatment because of the positive results of PPD or TSPOT.Twenty three patients who had positive PPD but negative TSPOT results received biological agent treatment without isoniazide,and none of them developed active tubereulosis after 6 to 18 months of follow-up.Conclusion BCG vaccination affects the result of PPD test in rheumatic patients,but has no influence on TSPOT results.The infection rate of latent tuberculosis of rheumatic patients in our research is 23.8%detected by TSPOT.

Adult ; Female ; Humans ; Magnetic Resonance Imaging ; Neuroma, Acoustic ; pathology ; surgery

Objective To investigate the bid gene expression and cell death in brain after cerebral hypoxia-ischemia in neonatal rats and the effects of dexamethasone(DEX)on bid gene expression,so as to elucidate the possible mechanism of the neuroprotective effect of DEX pretreatment on rats following cerebral hypoxia-ischemia.Methods Twenty-four SD neonatal rats were divided randomly into hypoxia-ischemia brain damage(HIBD),normal,dexamethasone-pretreated and 9 g/L NaCl(NS)control group.The animal models of HIBD were made.Total RNA from ipsilateral cerebral hemisphere was extracted.Reverse transcription polymerase chain reaction(RT-PCR)was used to evaluate the level of bid gene expression after hypoxia-ischemia.Cerebral apoptosis was determined by terminal-deoxynucleotidy transferase mediated d-UTP nick end labeling(TUNEL).Results The levels of bid mRNA were higher in HIBD rats than those in normal rats.The number of positive apoptosis cells significantly increased in HIBD group(P

Objective To explore the cellular inhibitor of apoptosis protein 1(cIAP1)gene expression and Caspase-3 activity in brain after cerebral hypoxia-ischemia in neonatal rats and the influence of dexamethasone(DEX)on cIAP1 gene expression and Caspase-3 activity,so as to elucidate the possible mechanism of the neuro-protective effect of DEX pretreatment on rats following cerebral hypoxia-ischemia.Methods Twenty-four SD neonatal rats were divided randomly into hypoxic-ischemic brain damage group(HIBD group),normal group(NS group),dexamethasone-pretreated group(DEX group)and 9 g/L NaCl control group(NS group).The animal models of HIBD were made.Total RNA from ipsilateral cerebral hemisphere was extracted.Reverse transcription polymerase chain reaction(RT-PCR)was used to evaluate the level of cIAP1 gene expression after hypoxia-ischemia.Caspase-3 relative activity of brain tissue was determined by colorimetric assay.Results The levels of cIAP1 mRNA were lower in HIBD group than those in NS group.Caspase-3 relative activity significantly increased in HIBD group(P

Objective To observe the combined poisonous effects of fluoride and aluminum on sex hormone of male rats.Methods Sixteen weaned SD healthy male rats aged two week were selected and divided into control group,aluminum group,fluoride group,fluorine-aluminum group,four rats in each group.All rats in the experimental groups were fed with corn collected from the prevailng areas containing different fluorine contents respectively for 90 days.Serum testosterone(T)and estradiol(E2)were detected.Results Compared separatelv with the control group[(3.317±0.635)μg/L],serum T level of fluorine-aluminum group[(15.994±6.558)μg/L]was higher(P＜0.05),but aluminum[(8.134±3.134)μg/L]and fluorine[(1.868±0.367)μg/L]groups had no significant differences(P＞0.05).Compared separately with the control group[(0.319±0.072)nmol/L],E2 level of the fluorine group[(0.172±0.030)nmol/L]being lower(P＜0.05),and it was not significant differences(P＞0.05)in the control group when compared with aluminum group[(0.282±0.012)nmol/L],and fluorine-aluminum group[(0.265±0.047)nmol/L].Fluorine and aluminum interacted with each other(F=9.82,P＜0.05).Conclusion The combined poisonous effects of fluorine and aluminum may influence sex hormone levels of male rats.

ObjectiveTo investigate the incidence of bacterial meningitis in patients who underwent intracranial neurosurgery and to explore the pathogen distribution and related risk factors.MethodsThe patients were selected by cluster systematic sampling method from the patient population who underwent intracranial neurosurgery for at least one time in Huashan Hospital affiliated to Fudan University in 2008.Chi-square test and Logistic regression model were used to analyze the data.ResultsA total of 1165 patients were included in this study.Seventy-nine of them were diagnosed with bacterial meningitis,while eight of them bad positive results for bacterial culture,including 3 cases of Acinetobacter baumannii,and 1 case each of Acinetobacter lwoffii,Klebsiella pneumoniae,Staphylococcus epidermidis,Enterococcus and Streptococcus intermedius. The common neurosurgical diseases with high incidence of postoperative bacterial meningitis were neurilemmoma 15.85％(13/82),glioma 12.21％ (21/172) and hydrocephalus 10.34％ (3/29).Logistic regression analysis identified male,implant,enteral nutrition,external ventricular drainage and wound negative pressure drainage as independent risk factors for postoperative bacterial meningitis.ConclusionsPostoperative central nervous system infection is the most common and severe complication after the intracranial neurosurgery.The results highlight the importance of improving pathogen detection rate and enhancing the prevention in high risk patient populations.