Arteriovenous Fistula ; therapy ; Child ; Embolization, Therapeutic ; Humans ; Male ; Pulmonary Artery ; abnormalities ; Pulmonary Veins ; abnormalities

The necessity to carry out student-oriented teaching of Medical information retrieval and use course in medical postgraduate was analyzed according to its theory followed by an elaboration on its module setting, course management methods, course examination forms and teachers.

Objective To study the relationship between extracellular signal-regulated kinases（ERK）phosphorylation and indirect activa-tion of the epidermal growth factor receptor（EGFR）in cultured cerebellar granule neurons induced by homocysteine.Methods We pri-marily cultured 7-day-old CD-1 mouse cerebellar granule neurons for 7 days and treated with different agents（saline,AG1478,Hcy and AG1478＋Hcy）.The phosphorylation of ERK was analyzed by Western blot,and apoptotic rate by flow cytometry.Results Compared with saline and AG1478 groups,the phosphorylation of ERK was increased in Hcy group（P 〈 0.05）.When we pretreated the cells with tyr-phostin AG1478,an inhibitor of EGFR,there was no difference in the activation of ERK compared with the control group.We found obvious neuronal apoptosis when 7-day-old CD-1 mouse cerebellar granule neurons were cultured for 7 days and treated with Hcy for 6 hours,and the apoptosis induced by Hcy was aggravated when the neurons were pretreated with AG1478（P 〈 0.05）.No apoptosis was found in the saline and AG1478 groups.Conclusion The role of Hcy on ERK activation suggests the involvement of an indirect activation process of EGFR,which has neural potentially protective effect.

OBJECTIVETo investigate the clinical application of free superficial iliac circumflex artery skin flaps, as well as the management of donor site defects.

METHODS17 free superficial iliac circumflex artery skin flaps were applied for the traumatic defects or deformities on face, neck, foot, hand, ankle and lower leg, respectively. The donor site defects were closed directly or covered by paraumbilical island flaps.

RESULTSThe 17 flap size ranged from 5 cm x 3 cm to 19 cm x 14 cm. 16 flaps survived completely except 1 flap with partial necrosis, which was closed by free skin graft. The donor site defects were closed directly in 10 cases, and covered by paraumbilical island flaps in 7 flaps without no flap necrosis. The abdomen had a good appearance.

CONCLUSIONSGood appearance can be achieved with free superficial iliac circumflex artery skin flaps for the defects on face, neck, foot, hand, ankle and lower leg. Paraumbilical island flap can be used for the donor site defects.

Arteries ; Foot ; Free Tissue Flaps ; blood supply ; transplantation ; Humans ; Reconstructive Surgical Procedures ; Skin ; Skin Transplantation ; Transplant Donor Site ; surgery ; Wounds and Injuries ; surgery

Objective To evaluate the significance of tumor markers CEA and CA15-3,and biochemical markers of bone turnover (total procol]agen type Ⅰ amino-terminal propeptide (TP I NP),β-isomerized carboxyterminal propeptide (β-CTx),ALP and PTH) in the diagnosis of bone metastasis from breast cancer.Methods A total of 78 patients (all females) with mean age (56.72 ± 10.76) years,who were diagnosed with breast cancer,were included in this study.The patients were divided into two groups based on radionuclide bone imaging:with bone metastasis (n =32) and without bone metastasis (n =46).The serum concentrations of CEA,CA15-3,TP I NP,[β-CTx,PTH,ALP were measured.Gleason scores were evaluated.The diagnostic value was evaluated by ROC curve.The two groups were compared using two-sample t test.The correlations between bone metastasis and tumor markers,bone metastasis and biochemical markers of bone turnover were analyzed with Pearson correlation and logistic analysis.Results The serum levels of CEA,CA15-3,TPINP,β-CTx,PTH and ALP were significantly higher in the group with bone metastasis than those in the group without bone metastasis (t:4.16-7.56,all P ＜ 0.05).For the diagnosis of bone metastasis from breast cancer,the AUC of CEA,CA15-3,TPINP,[β-CTx,PTH and ALP was 0.815,0.887,0.869,0.852,0.844,0.731,respectively.Using the cut-off values of 4.18 μg/L for CEA,0.04 U/L for CA15-3,49.70 μg/L for TP I NP,0.47 pg/L for β-CTx,54.90 ng/L for PTH and 49.90 U/L for ALP,the sensitivities were 56.3％ (18/32),75.0％ (24/32),78.1％ (25/32),81.3％ (26/32),78.1％ (25/32),68.8％ (22/32) and the specificities were 80.4％ (37/46),84.8％ (39/46),76.1％ (35/46),78.3％ (36/46),69.6％ (32/46),58.7％ (27/46),respectively.CEA,CA15-3,TPINP,β-CTx,PTH,ALP and Gleason score were positively correlated with the presence of bone metastasis (r:0.267-0.636,all P ＜ 0.05).CEA,CA15-3,TP I NP,β-CTx,PTH and Gleason score were independent predictors for bone metastasis of breast cancer (odds ratios:2.45,3.44,1.24,1.54,1.11,2.22,all P ＜0.05).The total coincidence rate of regression model was 81.3％ (26/32) in patients with bone metastasis.Conclusions The diagnostic values of CEA,CA15-3,TP I NP,β-CTx and PTH are comparable.Combined use of these parameters may be helpful for the early diagnosis of bone metastasis from breast cancer.

Objective To summarize the experience of the ventriculoperitoneal shunt (VPS) in communicating hydrocephalus and its complications. Methods The clinical features, operative techniques and outcome of 100 patients with hydrocephalus were analysed retrospectively. Results Ninety-five (95%) cases had a good result. Postoperative complications were found in 6(6%) cases including shunt apparatus blockage (4 cases) and shunt infection (2 cases). All the cases improved after taking the corresponding measures. Conclusion VPS is the most common shunt style for communicating hydrocephalus. The shunt apparatus blockage and infection are common postoperative complications. Intraoperative aseptic technique, the minimally invasive procedure, and the optimal placement of shunt tube may play an important role in improving the outcome of cerebrospinal fluid shunting surgery for communicating hydrocephalus.

Objective: To investigate the recurrence of pulmonary tuberculosis patients 5 years after successful treatment in Hengyang City, Hunan Province, and to analyze its influencing factors. Methods: The data of pulmonary tuberculosis patients who were successfully treated in Hengyang City in 2014 were collected through the tuberculosis management information system. The recurrence of pulmonary tuberculosis was defined as the endpoint, and all patients were observed for five consecutive years. Factors affecting recurrence of pulmonary tuberculosis were identified using Kaplan-Meier estimates, log-rank test and multivariable Cox proportional hazards regression analysis. Results: A total of 6 626 patients with successfully treated pulmonary tuberculosis were included, including 4 961 males and 1 665 females, with a median age of 54 years. There were 536 cases with recurrence of pulmonary tuberculosis within five years, with a 8.09% cumulative proportion of recurrence and annual recurrence rate of 1.75 per 100 person-years. Multivariable Cox proportional hazards regression analysis showed that men ( HR=1.592, 95%CI: 1.256-2.019 ), age of 40 years and greater ( age of 40 to 59 years, HR=7.025, 95%CI: 1.739-28.377; age of 60 years and greater, HR=8.175, 95%CI: 2.024-33.023), farmers ( HR=1.379, 95%CI: 1.070-1.778 ), retreatment ( HR=6.398, 95%CI: 5.163-7.929 ) and positive etiology ( HR=1.255, 95%CI: 1.042-1.511 ) were risk factors for five-year recurrence of pulmonary tuberculosis among successfully-treated patients. Conclusions High recurrence rate is found among pulmonary tuberculosis patients within five years after successful treatment in Hengyang City. There is a high risk of pulmonary tuberculosis recurrence among male, etiologically positive, retreated farmers at ages of 40 years and older, and targeted interventions are recommended.

OBJECTIVETo explore the effect of half circle external fixation for the treatment of open tibial fractures.

METHODSFrom March 2005 to March 2011, 94 patients with open tibiofibula fractures were treated by closed manipulative or Kirschner-wire poking reduction with half circle groove external fixation including 63 males and 31 females with an average age of 39 years old ranging from 17 to 65 years old. Among these patients, 5 cases were cross shaped fractures, 19 were oblique form and spiral fractures, 70 cases were comminuted fractures. According to the fracture Gustilo classification, 49 cases were type IIIA, 45 were type IIIB. The incidence of wound infection, fracture healing time were observed. The function was evaluated according to the Johner-Wruhs standard.

RESULTSAll patients were followed up for 14 to 63 months (averaged 29 months). The wound healing time was from 16 to 39 weeks (means 21.4 weeks). No fracture nonunion, osteomyelitis and calf compartment syndrome occurred. The wounds of 81 cases were healed at the first period,deep wound infection occurred in 2 cases. According to the function Johner-Wruhs evaluation criteria:the result was excellent in 52 cases, good in 37 cases, fair in 5 cases.

CONCLUSIONClosed manipulative or Kirschner-wire poking reduction and half circle groove external fixation can reduce the infection rate of open tibiofibula fractures. For open tibiofibula comminuted fractures, after the half circle groove external fixation for 3 to 6 weeks, a middle Kirschner-wire was removed according to fracture end healing situation to make fixation dynamic and promote fracture healing.

Adolescent ; Adult ; Aged ; Bone Wires ; External Fixators ; Female ; Fracture Fixation ; instrumentation ; Fractures, Comminuted ; surgery ; Fractures, Open ; surgery ; Fractures, Ununited ; surgery ; Humans ; Male ; Middle Aged ; Tibial Fractures ; surgery ; Young Adult

Abstract: Objective　To investigate the clinical characteristics and incidence of Brucella encephalitis and meningitis in children. Methods We report the clinical data of a child with Brucella melitensis meningitis in children, and summarize the incidence, diagnosis methods and treatment of Brucella encephalitis or meningitis in children, taking into account the relevant domestic and foreign literature from January 2014 to December 2020. Results　A 4-year-old girl was admitted to the hospital with status epilepticus on March 15, 2021 because of interrupted right limb numbness for 16 hours and convulsions for 2 hours. She had 2 non-febrile convulsions three months before admission and was diagnosed with epilepsy. This incident was acute, accompanied by low fever, with epilepsy as the main manifestation. Cerebrospinal fluid test suggested central nervous system infection, but the nature of infection could not be determined by routine and biochemistry of cerebrospinal fluid.The cerebrospinal fluid next generation sequencing confirmed that the pathogen of the infection was B. melitensis, which was further verified by the peripheral blood antibody test. After effective antibiotics combined with a full course of treatment, the patient recovered after six months of treatment. A total of 60 articles were retrieved in the database, including 29 in Chinese. During this period, a total of 7 cases of brucellosis in children with nervous system involvement were reported, one of which was a case report, and the other 6 cases were mentioned in the comprehensive analysis of children with brucellosis. Conclusions　Brucella encephalitis or meningitis in children has a low incidence and various clinical features, which are easy to be misdiagnosed or missed.

OBJECTIVETo investigate the effects of Shadu Cao Mixture (SDCM, traditional Chinese medicine) on immune functions of immunosuppression mice.

METHODSFifty BALB/C mice were randomly divided into blank control group, model group, SDCM low-dose, middle-dose and high-dose group. Except the blank control group, other groups were intraperitoneal injected with cyclophosphamide (40 mg/kg) to establish immunosuppression mice model. The blank control group and model group received gavage administration with nonnal saline, while the other groups received gavage administration with different doses of SDCM (10, 20, 40 m/kg for 15 days) respectively. The number of leukocytes and serum levels of interleukin-2 (IL-2), tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) in peripheral blood, spleen index, and the function of NK cells were measured.

RESULTSCompared with the model group , SDCM increased the number of leukocytes and serum concentrations of IL-2, TNF-α and IFN-γ in peripheral blood and improved the spleen index and the function of NK cells significantly (P < 0.05-0.01).

CONCLUSIONSDCM could remarkably enhance the immune functions of immunosuppression mice induced by cyclophosphamide.

Animals ; Cyclophosphamide ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacology ; Immunosuppression ; Interferon-gamma ; blood ; Interleukin-2 ; blood ; Killer Cells, Natural ; immunology ; Mice ; Mice, Inbred BALB C ; Spleen ; immunology ; Tumor Necrosis Factor-alpha ; blood