Polymorphonuclear neutrophil leukocyte (PMN) is an important member of the human immune cells. Recentyears, the recognition of the PMN function and the relationship between PMN and periodontitis have been updated. Besidesthe pathogens killing and phagocytosis, PMN also play an important role in immunoregulation and proresolving. The maintaining of PMN homeostasis is an intricate process and the precondition of defense function, which involves activation, adhesion, recruitment, apoptosis and efferocytosis. The regulatory mechanism of PMN homeostasis called neutrophil rheostat, it works through several cytokines and cells. Any factors that break the homeostasis will result in the damage of host immunity,and may relate to the occurrence of periodontitis. Moreover, PMN dysfunction, because of host factors or microorganism factors, is closely related to periodontitis, especially those associated with systemic diseases and gene defect.
Cytokines ; Homeostasis ; Humans ; Neutrophils ; Periodontitis ; Phagocytosis

Objective To investigate effects of intrathecal methotrexate on mechanical allodynia in rats with tibial bone cancer pain.Methods Forty-eight female SD rats weighing 150-180 g were randomly divided into 6 groups ( n =8 each):group Ⅰ sham operation + artificial cerebrospinal fluid(SA group),group Ⅱ sham operation + methotrexate 200 μg(SM group),group Ⅲ bone cancer pain + artificial cerebrospinal fluid(CA group),group Ⅳ-Ⅵ bone cancer pain + different doses of methotrexate (CM1-3 groups).The model of tibial bone cancer pain was induced by injecting Walker-256 cell into the tibial marrow cavity.CA and CM1-3 groups were intrathecal injected artificial cerebrospinal fluid,methotrexate 50,100 and 200 μg.SA and SM200 groups were intrathecal injected artificial cerebrospinal fluid and methotrexate 200 μg.The mechanical withdrawl threshold (MWT) was measured at day 1 before Walker-256 injection (baseline),7 day after injection (T0 ) and 2,4,8,24 hour and 1,3,5,7 days after intrathecal injection ( T1-8 ).Results Compered with the baseline,MWT was decrease in CA and CM1-s groups.Competed with To,MWT was decreased at T5-8 in CA group,MWT was increased at T3-5 in CM1 group,at T2-6 in CM2 group and at T2-7 in CM3 groups.MWT was decrease in CA and CM1-3 groups as compered with SA group; MWT was increased at T4-7 in CM1 group and at T3-7 in CM2 and CM3 groups.Conclusion Intrathecal injection of methotrexate can reduce tibial bone cancer pain in rats.

Objective To study the expression of multidrug resistance associated protein 1 (MRP1) and MRP2 in the peripheral blood mononuclear cells of children with intractable epilepsy (IE).Methods During Nov.2010 to Oct.2013,50 children with I E were collected as the experimental group,simultaneously 50 children with epilepsy controlled by the anti-epileptic drugs (AEDs) and 50 healthy children without epilepsy were collected as the control group from the outpatient or inpatient of Xuzhou Children's Hospital.The expressions of MRP1 and MRP2 in the peripheral blood mononuclear cells of children were detected by reverse transcriptase polymerase chain reaction and Western blot.Results 1.The mean relative expression of MRP1 and MRP2 mRNA in the peripheral blood mononuclear cells of children with IE (0.795 ± 0.042,0.804 ± 0.023) were higher than those in epilepsy controlled by AEDs (0.682 ± 0.030,0.675 ± 0.021) and healthy children without epilepsy (0.665 ± 0.031,0.654 ± 0.029) (all P ＜0.001).2.The mean relative expression of MRP1 and MRP2 protein in the peripheral blood mononuclear cells of children with IE (2.027 ±0.034,1.902 ±0.021) were higher than those in epilepsy controlled by AEDs(1.131 ±0.042,1.086 ± 0.027) and healthy children without epilepsy (1.093 ± 0.023,1.045 ± 0.018) (all P ＜ 0.001).3.There was no difference in the expression of MRP1,MRP2 mRNA and proteins between the children with epilepsy controlled by AEDs and healthy children without epilepsy (all P ＞ 0.05).Conclusions MRP1 and MRP2 over-expression in the peripheral blood mononuclear cells of children with IE may be associated with drug-resistance mechanism for medically intractable epilepsy.

Objective To investigate the role of chemokine ligand 21 (CCL21) in the spinal cord in tibia bone cancer pain (BCP) in rats.Methods Forty adult female SD rats weighing 160-180 g were randomly divided into 5 groups (n=8 each):sham operation group (group Ⅰ ); sham operation + CCL21 neutralizing antibody group (groupⅡ); BCP group (group [); BCP + PBS group (group Ⅳ); BCP + control IgG group (groupⅤ)and BCP + CCL21 neutralizing antibody group (group Ⅵ).BCP was induced by inoculating Walker-256 mammary gland carcinoma cells into the rat tibia medullary cavity in groups Ⅲ-Ⅵ.PBS 15 μl,IgG 10 μg and CCL21 neutralizing antibody 10 μg were injected intrathecally (IT) at 14 days after intra-tibial injection of Walker-256 mammary gland cancer cells in groups Ⅳ- Ⅵ respectively.Mechanical withdrawal threshold to yon Frey filament stimulation (MWT) was measured at 1 day before (To,baseline) ; 7 and 14 d after Walker-256 cell injection (T1,T2)and at 0.5,1,2,4,8,12,24 and 48 h after intrathecal injection (T3-10 ).Results Intra-tibial injection of Walker-256 mammary gland cancer cells significantly decreased MWT as compared with the baseline values in administration of CCL21 neutralizing antibody at T5-8 as compared with MWT before intrathecal administration at T2 in group Ⅵ.MWT was significantly lower in groups Ⅲ- Ⅳ than in groups Ⅰ and Ⅱ.MWT was significantly higher at T5-8 in group Ⅵ than in groups Ⅲ - Ⅴ.Conclu]sion CCL21 in the spinal cord is involved in the maintenance of tibia BCP in rats.

Objective To investigate the role of chemokine ligand 2 (CCL2) in the spinal cord expression in a rat model of tibia bone cancer pain.Methods Eighty-four female SD rats weighing 160-180 g were randomly divided into 3 groups ( n =28):control group (group C),sham operation group (group S) and tibia bone cancer pain group (group P).Tibia bone cancer pain was induced by intra-tibial inoculation of Walker-256 breast cancer cells.Paw withdral threshold to mechanical stimulation (MWT) was measured with von Frey filaments at 1 d before and at 1,3,7,10,14 and 21 d after inoculation.Six rats in each group were sacrificed after the measurement of MWT at 1 d before inoculation and at 7,14 and 21 d after inoculation.Lumbar 4-6 segments of the spinal cord were removed for determination of the expression of CCL2 by ELISA.The coexpression of CCL2 with Iba-1 (a specific marker of microglia),GFAP(a specific marker of astrocyte) and NeuN (a specific marker of neuron) was determined by double immunofluorescence assay after the measurement of MWT at 14 d after inoculation in group P.Results Compared with groups C and S,MWT was significantly decreased from 7 d to 21 d after inoculation,the expressive of CCI-2 in the spinal cord up-regulated at 7,14 and 21 d after inoculation in group P ( P ＜ 0.05).CCL2 was expressed in the microglia and astrocyte but not in neuron in the spinal cord dorsal horn in a rat model of tibia bone cancer pain.Conclusion Release of CCL2 from microglia and astrocytes in the spinal cord was involved in mechanical hyperalgesia in a rat model of tibia bone cancer pain.

Objective To construct an evaluation index system of ward management,which can evaluate the efficiency of ward management fairly, and make the ward management more scientific and standardized.Methods Delphi method was used in semi-structured interview of 31 experts and 74 experts were subject to questionnaire consultation, so as to establish the index system.Results The index system of ward management so built consisted of three level-1 indexes of safety and quality, teamwork and patient satisfaction, six level-2 indexes of daily monitoring, service environment, adverse events, doctor-nurse cooperation, evaluation of administrators and patient satisfaction, and 25 level-3 indexes.Practice of this system in the past two years reduced adverse events and elevated quality of care.Conclusions This system as used clinically proves its operability and objectivity.

OBJECTIVETo investigate the effect of oligochitosan in promoting intestinal absorption of protoberberine alkaloids in extracts from Corydalis saxicola total alkaloids.

METHODThe in vitro single-pass intestinal perfusion model in rats was established to study the changes in absorption kinetic parameters of dehydrocavidine, berberine hydrochloride and palmatine chloride in C. saxicola total alkaloids after the addition of different concentrations oligochitosan and evaluate the effect of oligochitosan in promoting intestinal absorption of the drugs.

RESULTThe concentration of oligochitosan had different effects on the absorption rate constant (Ka) and apparent permeability coefficient (Peff) of the three active component in rat intestines. Ka and Peff in 0.5% oligochitosan group significantly increased, indicating a stronger effect in promoting the absorption.

CONCLUSIONOligochitosan has a certain effect in promoting the intestinal absorptions of protoberberine alkaloids in C. saxicola total alkaloids.

Animals ; Berberine Alkaloids ; administration & dosage ; pharmacokinetics ; Chitin ; administration & dosage ; analogs & derivatives ; Corydalis ; chemistry ; Drugs, Chinese Herbal ; administration & dosage ; pharmacokinetics ; Intestinal Absorption ; drug effects ; Intestines ; drug effects ; metabolism ; Male ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo demonstrate the effects and mechanisms of Qifu decoction( QFD) on renal interstitial fibrosis (RIF) in model rats with yang-deficiency syndrome.

METHODThe rats were randomly divided into 3 groups, the Sham group (Group A), the Model group (Group B), the Qifu decoction group (Group C) and the Enalapril group (Group D). The RIF model was established by adenine administrated and unilateral ureteral obstruction (UUO) of the left ureter. After the model was successfully established, the rats in Group C and D were administrated with QFD or the Enalapril suspension,while the rats in Group A and B were administrated with distilled water. All rats were administrated for 3 weeks. Before administration and at the end of week 1, 2 and 3, the rats were weighted, and 24 h urinary protein excretion (Upro), urinary β2-microglobulin (Uβ2-MG) and urinary N-acetyl-D-glucosaminidase (NAG) were examined, respectively. All rats were killed after administration for 3 weeks. Blood and renal tissues were collected, renal morphology and tubulointerstitial morphology were evaluated, respectively. Serum cyclic adenosine monophosphate (cAMP), cyclic guanosine monophosphate (cGMP), blood urea nitrogen (BUN), serum creatinine (Scr) and uric acid (UA) were detected, respectively. The protein expressions of E-cadherin, α-smooth muscle actin(α-SMA), transforming growth factor-β1 (TGF-β1), onnective tissue growth factor (CTGF) extracellular signal-regulated protein kinase 1/2(ERK1/2) and phosphorylated-ERK1/2 (p-ERK1/2) in kidney were evaluated, respectively.

RESULTQFD ameliorated serum cAMP level and the rate of cAMP/cGMP, attenuated urinary β2-MG level, NAG level and renal tubulointerstitial fibrosis, increased E-cadherin protein expression, and reduced α-SMA, TGF-β1, CTGF and p-ERK1/2 protein expressions in the kidney. However, QFD had no influence on renal function in vivo. In addition, these effects were better than those of the model rats treated by Enalapril.

CONCLUSIONQFD could alleviate yang-deficiency parameters, as well as urinary β2-MG level and NAG level in model rats induced by adenine administration and UUO. Moreover, QFD could improve EMT and RIF by up-regulating E-cadherin protein expression, and down-regulating α-SMA, TGF-β1, CTGF and p-ERK1/2 protein expressions, the key molecular in ERK1/2 signaling pathway.

Animals ; Drugs, Chinese Herbal ; pharmacology ; Extracellular Signal-Regulated MAP Kinases ; antagonists & inhibitors ; Fibrosis ; Kidney ; drug effects ; pathology ; Kidney Diseases ; drug therapy ; pathology ; MAP Kinase Signaling System ; drug effects ; Male ; Rats ; Rats, Sprague-Dawley ; Ureteral Obstruction ; complications ; Yang Deficiency ; complications

Objective : To investigate the effect of mechanistic target of rapamycin complex 1 (mTORC1) on group 3 innate lymphoid cells (ILC3) function. Methods ¡¤ Intestinal lamina propria leukocytes (LPL) of C57BL/6 wild type mice were stimulated by rapamycin, the specific inhibitor of mTORC1 signaling pathway, in vitro, and then quantity and function of ILC3 were detected by flow cytometry. Next, purified ILC3 from mice intestinal LPL were sorted by flow cytometry. After the activation of ILC3 with IL-23, mRNA expression levels of Rorc (the gene encoding retinoic acid receptor related orphan receptor, i.e. RORγt), Il22 and Rptor (the gene encoding key component protein of mTORC1, i.e. Raptor) were detected by real-time qPCR. For further study, a genetically engineered mouse model specifically knocked out Raptor in ILC3 was constructed. Effects of mTORC1 loss on the quantity and function of ILC3 as well as gut structure were detected by flow cytometry, real-time qPCR and hematoxylin-eosin staining. Results ¡¤ The total ILC3 number had no change, but the secretion of IL-22 by ILC3 reduced after stim-ulation with rapamycin. Il22, Rorc and Rptor mRNA expression levels were upregulated simultaneously in ILC3 after activation with IL-23. In addition, there was no significant difference in the numbers and proportions of total ILC3 and ILC3 subsets as well as gut structure in Rap-tor-deficient mice, but the cytokine IL-22 secretion level of ILC3 significantly decreased in these mice. Conclusion ¡¤ Loss of mTORC1 func-tion inhibits ILC3 from secreting IL-22 but has no effect on the intestinal structure and intestinal ILC3 development, which reveals the positive regulation of mTORC1 signaling on intestinal ILC3 function.

Objective:In order to enhance the early dignosis level and strengthen the understanding of pathogeny、pathology by stage and prognosis of primary gallbladder car-cinoma(PGC). Methods : The results of 679 patients of PGC from 1956 to 1998 in first affiliated hospital of Xi'an medical university were retrospectively analyzed. Results: Most of the patients belong to advanced stage when dignosised. The PGC were usually found among the old women patients. The sex ratio(female/male) was 3:1. There is a intimate relatioship between gallstone and PGC. About sixty percents of PGC might be found gallstone.The dignostic accordance rate was low between preoperation and postopera-tion.Most patients with PGC were found unexpectedly in operation due to gallstone or a-cute cholecystitis. To worse more, many of patiens with PGC were missed the opportunities of dignosis and treatment because of only paying attention to gallstone. Most of the pathological types were adenocarcinoma. The development of imaging examination is hoped to find early stage cases and improve its prognosis. Conclusion : It is a basic way for early dignosis and improving prognosis to strengthen the understanding of pathogeny, pathology by stage and prognosis and rationalize application of all kinds of exzamination means in PGC.