Objective To evaluate the role of inositol triphosphate receptor (IP3 R) in the fractalkine-induced activation of p38MAPK signaling pathway in BV-2 microglial cells.Methods BV-2 microglial cells were seeded in 3.5 cm diameter dishes (5 ml/dish),50 ml culture flasks (8 ml/flask) or 24-well plates (1 ml/hole) with a density of 1 × 105/ml and randomly divided into 5 groups (n =25 each) ∶ control group (group C),fractalkinegroup (group F),CX3C chemokine receptor 1 (CX3CR1) antibody anti-CX3CR1 + fractalkine group (group CF),IP3R antagonist 2-APB + fractalkine group (group AF) and p38 mitogen-activated protease (p38MAPK) inhibitor SB203580 + fractalkine group (group SF).Fractalkine 10 nmol/L was added to the culture medium in groups F,CF,AF and SF.The anti-CX3CR1 15 μmol/L,2-APB 50 μmol/L and SB203580 10 μmol/L were added to the culture medium in groups CF,AF and SF,respectively,1 h before addition of fractalkine.The cells were then cultured for 24 h.The intracellular Ca2+ concentration ([Ca2+]i) was measured during the 10 min incubation with fractalkine.The phosphorylation of p38MAPK was measured at 0,30,60,120 and 240 min of incubation with fractalkine.The concentrations of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in theculture medium were determined at 24 h of incubation with fractalkine.Results Compared with group C,[Ca2+]i,and the phosphorylation of p38MAPK and concentrations of IL-1β and TNF-α were significantly increased in groups F,CF,AF and SF (P ＜ 0.05).[Ca2+]i was significant lower in groups AF and CF and phosphorylation of p38MAPK and concentrations of IL-1β and TNF-α were significantly lower in groups CF,AF and SF than in group F (P ＜ 0.05).Conclusion IP3 R is involve in the fractalkine-induced activation of p38MAPK signaling pathway in BV-2 microglial cells.

Objective To determine whether p38 mitogen-activated protein kinase (p38MAPK) signaling pathway is involved in cerebral fractalkine-induced hyperalgesia in mice.Methods Two hundred and twenty-five male Kunming mice weighing 30-40 g were randomly divided into 4 groups:group control ( group C,n =55 ) ;group fractalkine (group F,n =60); group anti-CX3CR1 + fractalkine (group CF,n =55) and group SB203580 (p38MAPK inhibitor) + fractalkine (group SF,n =55).Fractalkine 100 ng was injected into cerebral lateral ventricle (i.c.v.) in groups F,CF and SF.Anti-CX3CR1 1 μg and SB203580 1 μg were injected i.c.v.at 1 h before fractalkine injection in groups CF and SF respectively.Paw withdrawal latency to a thermal nociceptive stimulus (PWL) was measured at 30 min before the drugs were injected into cerebral lateral ventricle and 30,60,120 and 240 min after fractalkine injection.Five animals were sacrificed after PWL measurement at each time point and their brains were removed for determination of phosphorylated p38MAPK protein expression (by Western blot analysis).Five animals were sacrificed at 30 min before the drugs were injected into cerebral lateral ventricle and 6,12 and 24 h after fractalkine injection for determination of IL-1β and TNF-α contents in the brain (by ELISA) in all the 4 groups.In group F 5 animals were sacrificed at 4 h after fractalkine injection for determination of action of fractalkine on microglia or astrocyte (by immunofluorescence).Results Fractalkine i.c.v.injection significantly reduced PWL and increased phosphorylated 38MAPK,IL-1β and TNF-α levels in group F as compared with group C.Pretreatment with anti-CX3CR1 or SB203580 significantly decreased fractalkine-induced hyperalgesia and phosphorylated-p38MAPK,IL-1β and TNF-α levels in groups CF and SF as compared with group F.Fractalkine was localized at microglia.Conclusion p38MAPK signal transduction pathway is involved in cerebral fractalkine-induced hyperalgesia in mice.

Objective:To investigate the occurrence of psychological crisis in patients with liver cancer and explore the relevant influencing factors, so as to provide certain reference value and practical basis for clinical psychological nursing.Methods:Using the convenient sampling method, a total of 150 patients with liver cancer who were treated in the Fifth Medical Center of PLA General Hospital from October 2016 to June 2018 were selected for questionnaire survey. The survey tools included general information and Triage Assessment Form (TAF) . A total of 150 questionnaires were collected in this study, of which 146 were complete, and the effective rate was 97.33%.Results:The total average score of TAF of patients with liver cancer was (16.84±3.78) , and scores of each factor from high to low were emotion (15.48±6.20) , cognition (15.18±4.71) and behavior (14.23±4.60) . The incidence of psychological crisis among patients was 81.51% (119/146) . The influencing factors of psychological crisis of patients with liver cancer were gender, payment method of medical expenses, diagnosis time, treatment method and tumor stage ( P<0.05) . Conclusions:Patients with liver cancer cannot solve their own phychological problems and need medical staff to provide appropriate professional help and guidance, thus nursing staff should carry out targeted psychological interventions for patients with liver cancer.