Aim To observe the effects of ketamine on Na+,K+-ATPase,Ca2+-ATPase and NOSase activity in different cerebral cortex in convulsive mice.Methods The mice were randomly divided into blank group,normal saline(NS) group and ketamine 25 mg?kg-1 (KetⅠ),50 mg?kg-1(KetⅡ) group. The animals of blank group were killed directly.Convulsion was induced by intraperitoneally(ip) strychnine(1.5 mg?kg-1) in other groups,and correspond drugs were administered ip before five minutes.Action variety of mice was observed. Animals were killed on 30 minutes after strychnine injection.The activity of Na+,K+-ATPase,Ca2+-ATPase,TNOSase and iNOSase were assessed by spestrophotometric analysis in different cere-bral cortex(forehead,parietal and occipital area).Results Ketamine group could decrease mortality completely. The duration of tonic state in KetⅡ group was significantly shorter than that in KetⅠgroup.Compared with blank group,Na+,K+-ATPase and Ca2+-ATP ase activities were decreased in the group of NS and KetⅠ,and recovered normal level in the group of KetⅡ at parietal and occipital area. TNOS ase activity was decreased by 1/3 in KetⅡ group(P

Objective To investigate the clinical efficacy of electroacupuncture plus a multi-function cervical rehabilitation system in treating cervical spondylosis.Methods Sixty patients with cervical spondylosis were randomly allocated to treatment and control groups, 30 cases each. The treatment group received electroacupuncture plus treatment with a multi-function cervical rehabilitation system and the control group, electroacupuncture alone. After 30 days of treatment, changes in the pain score, the neck disability index, and cervical active range of motion and isometric muscle strength were observed in the two groups and the clinical therapeutic effects were compared between the two groups.Results The total efficacy rate was 96.7% in the treatment group and 93.3% in the control group; there was no statistically significant difference between the two groups (P>0.05). There were statistically significant pre-/post-treatment differences in the pain score, the neck disability index, and cervical active range of motion and isometric muscle strength in the two groups (P<0.01,P<0.05). There were statistically significant post-treatment differences in the neck disability index, and cervical active range of motion and isometric muscle strength between the treatment and control groups (P<0.05).Conclusions Electroacupuncture plus a multi-function cervical rehabilitation system is an effective way to treat cervical spondylosis. It can relieve the clinical symptoms in the patients.

Objective To evaluate the anxiety and depression problems in children parents with leukemia, as well as the problems' influence to the psychosocial characteristics of leukemia children.Methods Twenty long-term survivors of childhood leukemia (group A), thirty children newly diagnosed as leukemia (group B) and fifty age-matched healthy controls (group C) completed the questionnaires allowing assessment of symptoms associated with anxiety, depression and self-concept. At the same time, the anxiety and depression in the parents of children with leukemia were also measured using SAS and SDS. Results The anxiety and depression scores of the parents in study group (48.56±9.23, 51.86±9.53) were much higher than that in normal population (37.23±12.59, 41.88±10.57) (P = 0.000, 0.000, respectively), the positive rate of anxiety and depression symptoms among group B was significantly higher than that among group A (60.0 % vs 25.0 %, 46.7 % vs 20.0 %; P <0.05, respectively). There was a significant positive relation between the depression and anxiety scores in the parents of children with leukemia(r =0.947, P =0.0000). Group A scored significantly higher on subscales of somatization/panic (6.11 ±4.36), generalized anxiety (5.72±4.56),social phobia (7.67±4.19) and the total scale (25.8±13.98) than group C (the score was 3.68±3.39, 2.54±2.99,4.24±2.88 and 15.9±10.52, respectively) (P<0.05, respectively), group B scored significantly higher on subscales of social phobia (6.03 ±2.16) than group C (4.24±2.88) (P =0.016). There was a significantly positive relation between the depression score in children with leukemia and the anxiety (r = 0.309, P = 0.029) & depression(r = 0.342, P = 0.015) scores in their parents. Group A scored significantly higher on the total score of self-concept(60.8±6.25) as well as the subscales of happiness(7.95±1.32) than group G (64.48±7.89 vs 8.64±1.19) (P =0.039, 0.026, respectively); and group B scored significantly higher on subscales of behavior (12.47±1.25), intelligence(10.80±2.12), physical appearance and attributes (8.40±2.66), anxiety (9.93±1.29) and the total scale (59.83±5.87) than group C (14.00±2.17, 12.60±2.96, 9.64±2.30, 11.38+2.18, 64.48±7.89) (P <0.05, respectively). There was a significantly positive relation between the score of gregarization subscale in leukemic children and the anxiety score in their parents (r = 0.337, P = 0.017). Conclusion The findings of our studies have suggested that the parents of children with leukemia are at risk for psychological difficulties, and which have a great influence on the psychological health of their children.

Objective To detect time-dependent change of neuritin expression in brain tissues after traumatic brain injury and discuss the effect of neuritin after brain damage occurred. Methods Forty-two rats were divided into normal group, control and experimental group. According to the postoperative time divided into 6 subgroups, including 6 hours group, 12 hours group, 24 hours group, 3 days group, 7 days group and 14 days group. Immunohistochemical and western-blot were used to detected the protein expression levels of neuritin. Results The immunohistochemical staining indicated that the positive expression of neuritin was strong in the cytomembrane and cytoplasms of the neurons, with a higher intensity, 6 hours after the operation. 12 hours after the operation last to the seventh day, the neurons with the strongest positive expression, is significantly higher than control group and normal group, significant decrease on the fourteenth day. The result of western-blot indicated that the level of neuritin protein sharply increased at 6 hours, reached the peak on 24 hours and after lasted to the seventh day, significantly higher than control group and normal group (P < 0.01), significant decrease on the fourteenth day (P < 0.05). Conclusion Up-regulation of neuritin in cerebral contusion tissues may play an important role after traumatic brain injury.

OBJECTIVETo evaluate the feasibility and characteristics of human engraftment in HLA disparate cord blood transplantation.

METHODSTwo human HLA-haploidentical or HLA-mismatched cord blood units were transplanted into sublethally irradiated severe combined immunodeficiency (SCID) mice. The characteristics of engraftment, hematopoietic and immunological reconstitution between the two groups were compared.

RESULTSTwo mixed cord blood units can engraft in SCID mice with donor-recipient chimerism and reconstitute hematopoiesis and immunological functions. No unfavorable factors had been observed. Only one of the two cord blood units which had higher colony forming ability in vitro could engraft in most SCID mice as shown by HLA-DQB(1) gene detection. Two HLA-haploidentical cord blood units were simultaneously engrafted in 3 SCID mice.

CONCLUSIONDouble HLA-haploidentical or HLA-mismatched cord blood can engraft in SCID mice and reconstitute hematopoietic and immunological functions. HLA disparity has no significant effect on survival and engrafting rate. However, in less HLA disparity group, two cord blood units were prone to engraft simultaneously.

Animals ; Antigens, CD ; immunology ; Cord Blood Stem Cell Transplantation ; methods ; Disease Models, Animal ; Female ; Fetal Blood ; immunology ; metabolism ; Flow Cytometry ; HLA Antigens ; genetics ; immunology ; Hematopoiesis ; Humans ; Mice ; Mice, SCID ; Random Allocation ; Severe Combined Immunodeficiency ; immunology ; physiopathology ; surgery ; Survival Analysis ; Transplantation, Heterologous

Objective To explore the feasibility of automatic segmentation of clinical target volume(CTV)and organs at risk(OARs)for cervical cancer using AccuLearning(AL)based on geometric and dosimetric indices.Methods Seventy-five CT localization images with manual contouring data of postoperative cervical cancer were enrolled in this study.Sixty cases were randomly selected to trained to generate automatic segmentation model by AL,and the CTV and OARs of the remaining 15 cases were automatically contoured.Radiotherapy plans on the automatic segmentation contours were imported on the CT images of manual contours.The efficiency,Dice similarity coefficient(DSC),Hausdorff distance(HD)and dosimetric parameters were compared between the two methods.Results The time of automatic segmentation was significantly shorter than that of the manual contour(P<0.05).The DSC of all structures were≥0.87.The HD of bowel bag and rectum were about 10 mm,and that of the rest of OARs were less than 5 mm.CTV(D98,V90% ,V95% ,Dmean,HI),bowel bag(V50)and bladder(V50)had significant differences in dosimetric comparison(P<0.05).Conclusion The automatic segmentation model based on AL can improve the efficiency of radiotherapy.Automatic segmentation of OARs has the potential of clinical application,while that of CTV still needs to be further modified.

The clinical features and laboratory tests results of two cases with Fanconi anemia (FA) who were admitted to the Department of Children′s Hematology and Endocrinology, the Provincial Hospital Affiliated to Shandong First Medical University in 2017 were analyzed.Sanger sequencing and multiplex ligation-dependent probe amplification(MLPA) of FA-related genes was carried out.One case was female, 4 years and 3 months old.The other case was a 6-year-old male.The main manifestations were recurrent fever, asthenia and bleeding points in both legs.The girl had milk coffee spots scattered on her legs and waist, and her left thumb nail was absent.The boy had no obvious physical examination abnormality, but his left atrium and left ventricle were large and segmental myocardial damage could be seen by echocardiography.Bone marrow biopsies of both cases showed hypo-proliferation (40%) or extremely low proliferation (10%), and no megakaryocyte was found.There were no significant abnormalities in chromosome aberration, single cell gel electrophoresis, cluster of differentiation(CD) 41, CD 55, and CD 59 and chromosome karyotype.Gene sequencing revealed that the two children had compound heterozygous mutations of Fanc A gene, which came from parents.The heterozygous mutation of c1838delT was found in the exon 21 of the female child and her father, which resulted in amino acid shift mutation pIi613Tfs*27.The heterozygous deletion mutations in exons 1-3 of Fanc A gene were found in the female child and her mother by the MLPA results.The gene sequencing analysis of the male child and his family members showed the heterozygous mutation of c4124_4125del in the exon 41 of the child and his mother, which resulted in amino acid shift mutation p. T1375Sfs*49.The heterozygous deletion mutations were observed in exons 23-40 of the male child and his father, according to the MLPA results.The main basis of diagnosis of FA is to sequence the related genes of suspected children.The c1838delT is a new mutation of Fanc A gene.

Objective To compare the skin temperature around relevant and irrelevant meridian acu-points,or non-meridian sham acupoints in rats with myocardial ischemia by high frequency electro-acu-puncture(EA)at Neiguan(PC6)point or sham acupoint,in healthy rats and myocardial ischemic rats. Methods Fifty male Wister rats were randomly divided into five groups:blank control group,sham-op-eration group,model group,high frequency EA at Neiguan group(PC6)and high frequency electro-acu-puncture at sham acupoint groups.Rats in high frequency EA at and at sham acupoints group received EA intervention after their models were successfully established.Temperature around the skin of Neiguan (PC6),Yanglingquan(GB34)and sham acupoints were measured and recorded by infrared thermogra-phy in every group at 30 minutes 60 minutes after three-day treatment for statistical analysis.Results Compared with the blank control group,skin temperature around PC6 in model groups was significantly lower(P<0.01);Compared with the model group,skin temperature around PC6 in high frequency EA at PC6 group was significantly increased(P <0.01);Skin temperature around PC6, GB34 and sham acupoint in high frequency EA at sham acupoint groups presented with no statistical significance; skin temperature around PC6 in high frequency EA at PC6 group was similar to the skin temperature of blank control group,which was measured 30 minutes after the treatment.Conclusion The relative specificity of skin temperature around PC6 can be useful for the reflection of different conditions of rats' myocardi-um.High-frequency electro-acupuncture at PC6 can prevent the reduction of skin temperature caused by myocardial ischemia injury,of which the mechanism needs further study.

To observe the effect of high-mobility group box 1 (HMGB1) on autophagy and chemotherapy resistance in human leukemiacell line (K562) cells, and to explore the underlying mechanisms.
 Methods: The K562 cells were cultured in vitro and divided into 6 groups: a chemotherapeutic group, a chemotherapeutic control group, a HMGB1 preconditioning group, a HMGB1 preconditioning control group, a HMGB1 siRNA group and a siRNA control group. The chemotherapeutic group was further divided into a vincristine (VCR) group, an etoposide (VP-16) group, a cytosine arabinoside (Ara-C) group, a adriamycin (ADM) group and a arsenic trioxide (As2O3) group. The cell activity was evaluated by cell counting kit-8. The protein levels of HMGB1, microtubule-associate protein1light chain3 (LC3), AMP-activated protein kinase (AMPK) and mammalian target of rapamycin (m-TOR) were determined by Western blotting. The level of serum HMGB1 was evaluated by enzyme-linked immunosorbent assay (ELISA). The autophagy was examined by monodansylcadaverine staining and observed under transmission electron microscopy.
 Results: Compared with the control group, the cell activity was significantly decreased and the level of serum HMGB1 was significantly increased in the chemotherapeutic (VCR, VP-16, Ara-C, ADM and As2O3) groups (all P<0.05). Compared with the control group, the cell activity and the level of serum HMGB1 were significantly increased in the HMGB1 preconditioning group (both P<0.05). Compared with the siRNA control group, the cell activity and the level of serum HMGB1 were significantly decreased in the HMGB1 siRNA group (both P<0.05). Compared with the control group, the expression of LC3-II and the formation of autophagic bodies were increased in the HMGB1 preconditioning group (both P<0.05), the p-AMPK expression was increased and p-mTOR expression was decreased (both P<0.05).
 Conclusion: HMGB1 can increase the autophagy and promote chemotherapy resistance through the pathway of AMPK/m-TOR in K562 cells.
AMP-Activated Protein Kinases ; genetics ; physiology ; Arsenic Trioxide ; Arsenicals ; Autophagy ; genetics ; Cytarabine ; Doxorubicin ; Drug Resistance, Neoplasm ; genetics ; physiology ; Etoposide ; HMGB1 Protein ; genetics ; physiology ; Humans ; K562 Cells ; physiology ; Microtubule-Associated Proteins ; Oxides ; RNA, Small Interfering ; Signal Transduction ; TOR Serine-Threonine Kinases ; genetics ; physiology ; Vincristine

Objective:To analyze the factors affecting delayed chemotherapy in children with Burkitt lymphoma (BL) and their influence on prognosis.Methods:Retrospective cohort study. Clinical data of 591 children aged ≤18 years with BL from May 2017 to December 2022 in China Net Childhood Lymphoma (CNCL) was collected. The patients were treated according to the protocol CNCL-BL-2017. According to the clinical characteristics, therapeutic regimen was divided into group A, group B and group C .Based on whether the total chemotherapy time was delayed, patients were divided into two groups: the delayed chemotherapy group and the non-delayed chemotherapy group. Based on the total delayed time of chemotherapy, patients in group C were divided into non-delayed chemotherapy group, 1-7 days delayed group and more than 7 days delayed group. Relationships between delayed chemotherapy and gender, age, tumor lysis syndrome before chemotherapy, bone marrow involvement, disease group (B/C group), serum lactate dehydrogenase (LDH) > 4 times than normal, grade Ⅲ-Ⅳ myelosuppression after chemotherapy, minimal residual disease in the interim assessment, and severe infection (including severe pneumonia, sepsis, meningitis, chickenpox, etc.) were analyzed. Logistic analysis was used to identify the relevant factors. Kaplan-Meier method was used to analyze the patients' survival information. Log-Rank was used for comparison between groups.Results:Among 591 patients, 504 were males and 87 were females, the follow-up time was 34.8 (18.6,50.1) months. The 3-year overall survival (OS) rate was (92.5±1.1)%,and the 3-year event-free survival (EFS) rate was (90.5±1.2)%. Seventy-three (12.4%) patients were in delayed chemotherapy group and 518 (87.6%) patients were in non-delayed chemotherapy group. The reasons for chemotherapy delay included 72 cases (98.6%) of severe infection, 65 cases (89.0%) of bone marrow suppression, 35 cases (47.9%) of organ dysfunction, 22 cases (30.1%) of tumor lysis syndrome,etc. There were 7 cases of chemotherapy delay in group B, which were seen in COPADM (vincristine+cyclophosphamide+prednisone+daunorubicin+methotrexate+intrathecal injection,4 cases) and CYM (methotrexate+cytarabine+intrathecal injection,3 cases) stages. There were 66 cases of chemotherapy delay in group C, which were common in COPADM (28 cases) and CYVE 1 (low dose cytarabine+high dose cytarabine+etoposide+methotrexate, 12 cases) stages. Multinomial Logistic regression analysis showed that the age over 10 years old ( OR=0.54,95% CI 0.30-0.93), tumor lysis syndrome before chemotherapy ( OR=0.48,95% CI 0.27-0.84) and grade Ⅲ-Ⅳ myelosuppression after chemotherapy ( OR=0.55,95% CI 0.33-0.91)were independent risk factors for chemotherapy delay.The 3-year OS rate and the 3-year EFS rate of children with Burkitt lymphoma in the delayed chemotherapy group were lower than those in the non-delayed chemotherapy group ((79.4±4.9)% vs. (94.2±1.1)%, (80.2±4.8)% vs. (92.0±1.2)%,both P<0.05). The 3-year OS rate of the group C with chemotherapy delay >7 days (42 cases) was lower than that of the group with chemotherapy delay of 1-7 days (22 cases) and the non-delay group (399 cases) ((76.7±6.9)% vs. (81.8±8.2)% vs. (92.7±1.3)%, P=0.002).The 3-year OS rate of the chemotherapy delay group (9 cases) in the COP (vincristine+cyclophosphamide+prednisone) phase was lower than that of the non-chemotherapy delay group (454 cases) ((66.7±15.7)% vs. (91.3±1.4)%, P=0.005). Similarly, the 3-year OS rate of the chemotherapy delay group (11 cases) in the COPADM1 phase was lower than that of the non-chemotherapy delay group (452 cases) ((63.6±14.5)% vs. (91.5±1.3)%, P=0.001). Conclusions:The delayed chemotherapy was related to the age over 10 years old, tumor lysis syndrome before chemotherapy and grade Ⅲ-Ⅳ myelosuppression after chemotherapy in pediatric BL. There is a significant relationship between delayed chemotherapy and prognosis of BL in children.