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Objective:To investigate the clinical features and long-term prognosis of pediatric acute lymphoblastic leukemia (ALL) with renal involvement as the initial manifestation, thus enhancing the diagnostic and therapeutic efficacy.Methods:Twenty-four cases of pediatric ALL with renal involvement as the initial manifestation treated in the First Affiliated Hospital of Zhengzhou University from March 2013 to March 2019 were analyzed retrospectively, and their clinical characteristics were analyzed.According to renal imaging examination findings, they were divided into abnormal group and normal group.The differences in clinical features between the two groups were compared, and the cumulative survival rate was evaluated by Kaplan-Meier method.Results:Among 1 030 newly treated cases of pediatric ALL, 24 cases(2.33%) had renal involvement as the initial manifestation, involving 20 males and 4 females, with a male/female ratio of 5∶1 and the median age of 4.3 years (1.3-14.0 years). There were 16 cases of superficial lymph node enlargement and 21 cases of hepatosplenomegaly.Immature cells in peripheral blood were found in 15 cases.Nine cases were examined with abnormal renal imaging, involving 8 cases returned normal after chemotherapy, and 1 died of renal failure.At the end of follow-up on August 1, 2020, there were 9 cases of bone marrow relapse, 11 survival cases, 10 death cases and 3 cases of loss to follow-up.There were no significant differences in the sex, age, immunophenotype, organ infiltration and urinary protein between the two groups (all P>0.05). The proportion of high creatinine level and intramedullary recurrence rate in the abnormal group were significantly higher than those in the normal group [55.6%(5/9 cases) vs.0(0/15 cases), P=0.003; 66.7%(6/9 cases) vs.20.0%(3/15 cases), P=0.036]. The survival analysis indicated that the 3-year cumulative survival in the abnormal group was significantly lower than that of normal group (17.3% vs.72.7%, χ2=4.047, P< 0.05). Conclusions:For children with unexplained renal involvement as the initial manifestation, clinicians should consider the possibility of leukemic renal infiltration or nephrogenic lymphoma.Physical examinations of the liver, spleen and lymph nodes, morphological analysis of peripheral blood cells, bone marrow examination and renal biopsy are important to make a definite diagnosis in time.Children with imaging abnormalities caused by leukemic renal infiltration are more likely to relapse and have a lower survival rate, which may be a poor prognostic factor for ALL.
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Objective:To investigate the mechanism of programmed death 1(PD-1)/ programmed death ligand 1(PD-L1) signaling pathway and its feasibility as a potential therapeutic target and prognostic predictor by detecting the expressions, of PD-1 and PD-L1 in bone marrow mononuclear cells of children with acute lymphoblastic leukemia (ALL), and to provide new ideas for the diagnosis and treatment of ALL as well.Methods:Bone marrow samples were collected from 59 children with ALL in the First Affiliated Hospital of Zhengzhou University from September 2018 to July 2019.Flow cytometry was applied to detect the expression of PD-1 and PD-L1 in bone marrow mononuclear cells in 59 ALL patients, including 47 newly-diagnosed ALL patients and 12 relapsed ALL patients, respectively, at initial diagnosis, after induction therapy and early intensive treatment.Their relevant clinical data were collected and compared with the bone marrow specimens of 12 children suffering from non-malignant blood diseases as the control group of the same hospital during the same period.Results:There was no significant difference in the expression of PD-1 in the bone marrow mononuclear cells of the primary diagnosis group, recurrence group and control group ( H=2.402, P>0.05). The expression of PD-L1 in the relapsed and refractory group [(7.32±3.60)%] and the newly diagnosed group [(3.18±2.37)%] was higher than that in the control group [(0.84±0.39)%], and the differences were statistically significant ( H= 28.048, P<0.05). In the initial treatment group, the expression of PD-L1 in the bone marrow mononuclear cells was the strongest expression before treatment ( B=1.293), followed by after induction treatment ( B=0.036) and after early intensive treatment ( B=0.000), suggesting that there was a downward trend as the continued treatment.The expression of PD-L1 was the weakest expression in the low-risk group ( B=-3.912) than in the medium-risk group ( B=-3.595) and high-risk group ( B=0.000), revealing that the expression of PD-L1 is related to the risk grades of ALL.The higher the risk rating is, the higher the PD-L1 protein expression is. Conclusions:The high expression of PD-L1 may be involved in the pathogenesis and be used as an adverse predictor of ALL childhood and an evaluation index of chemotherapy efficacy.PD-1 / PD-L1 signaling pathway may be a potential therapeutic target of ALL childhood.
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Objective To evaluate the effects and safety of dezocine and dexmedetomidine hydrochloride on the prevention of the pediatric postoperative agitation. Methods A total of 90 pediatric patients undergoing prepuce cerclage were randomly divided into 3 groups(n=30):dezocine group( Group Dez),dexmedetomidine group( Group Dex) and control group ( Group C),all groups were implemented general anesthesia combining with penile dorsal nerve block anesthesia.After induction of anesthesia,Group Dez and Group Dex were given 0.1 mg·kg-1of dezocine and 0.5 μg·kg-1of dexmedetomidine hydrochloride,respectively,Group C was given 0.9% sodium chloride solution.The rate of pediatric agitation,the operating room, the recovery time,the amount of additional propofol during the operation and the adverse reaction incidence within 6 hours after the surgery(circulation and respiratory depression,drowsiness,headache,nausea and vomiting) were observed and recorded. Results All groups have the surgery successfully done.There were no significantly difference among the three groups on the recovery time( P>0.05).The incidence of postoperative agitation was 3.33% in Group Dez,0.00% in Group Dex,46.67% in Group C,respectively( P<0.05 ).All of the pediatrics in three groups were not given additional propofol.There was no obvious adverse reaction at the time of 6 hours after surgery. Conclusion Dezocine and dexmedetomidine hydrochloride both can reduce the rate of postoperative agitation in pediatric patients and have no obvious side effects.Therefore,the clinical use of dezocine and dexmedetomidine hydrochloride are safe and effective.
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Objective To observe the analgesic effect and safety of dezocine used in the periextubation period in pediatric pa-tients undergoing cleft lip and palate repair surgery under general anesthesia .Methods 60 American Society of Anesthesiologists (ASA ) grade Ⅰ - Ⅱ pediatric patients undergoing elective cleft lip and palate repair surgery under under general anesthesia in the central anesthesia department from January 1 to August 1 ,2013 were selected and randomly divided into group D ,F and N ,20 cases in each group .All the cases were performed the endotracheal intubation general anesthesia .At 15 min before the end of operation , the group D was intravenously injected by dezocine 0 .10 mg/kg ,the group F by fentanyl 1 .00 μg/kg and the group N (control group) by the isodose normal saline .The mean arterial pressure(MAP) and heart rate(HR) in all groups were recorded before in-duction ,extubation and at 5 min after extubation respectively .The extubation time ,Riker sedation-agitation scores and face ,legs ,ac-tivity ,cry and consolability(FLACC) scores at 30 min after extubation ,occurrence rates of various complications within 30 min after extubation(breathing and circulation depression ,nausea and vomiting ,drowsiness ,headache and extrapyramidal reactions were ob-served and recorded .Results The three groups completed the operation successfully .There were no significantly differences in age , body weight ,operation time and sevoflurane inhalation concentration among the three groups (P>0 .05) .HR and MAP in extuba-tion and at 5 min after extubation in the group D were lower than those in the group N and F(P0 .05) .There was no statistically significant difference in the extubation time among 3 groups(P>0 .05) .The Riker sedation-agitation scores and the FLACC scores at 30 min after extubation in the group D were significantly lower than those in the group N and F with statistically significant difference( P< 0 .01 ) .Adverse reaction such as respiratory inhibition ,nausea ,vomiting ,lethargy ,headache ,vertebral body reaction were not found in the 3 groups after 30 minutes .Conclusion Dezocine used in pediatric patients with cleft lip and pal-ate repair surgery is safe and effective .
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Objective To investigate the effect and mechanism of low-dose remifentanil(RF)on systemic artery tension of baby rabbit with septic shock.Methods Thirty-six systemic artery strips were prepared from 12 baby rabbits and randomly divided into 6 groups:control group,lipopoly-saccharide(LPS)group,RF group,LPS + RF group,NG-nitro-L-arginine(L-NNA)pretreated group,LPS + L-NNA pretreated group.Each group had six rings(n =6).The effect of low-dose RF on the systemic artery tension of baby rabbit with septic shock was observed with isolated vascular ring technique.The change was also obversed after L-NNA pretreatment.Results In control group:the relaxant rates after low-dose RF at the time point of 5 min,10 min,20 min were(18.48±3.96)％,(23.63±4.42)％,(28.33±3.73)％(P＜0.05),compared with NS group.After pretreatment with L-NNA,RF-related relaxant rates of systemic arteries decreased significantly to(8.15 ± 1.01)％,(13.08 ± 1.46)％,(18.54 ±2.94)％(P ＜ 0.05).In LPS group,low dose RF(4 μg/L)did not bring out any response to systemic arteries(P ＞0.05).The tension was not affected with pretreatment of L-NNA(P ＞ 0.05).Conclusion These results suggest that low dose RF has relaxant effect on systemic arteries of baby rabbits,and NO may be involved.Low dose RF has no relaxant effect on LPS-pretreated systemic arteries of baby rabbits,and it has no association with NO.