Arteriovenous fistula (AVF) and arteriovenous malformation (AVM) are the common intracranial vascular malformations. The experimental models of AVF and AVM include animal models, in vitro models and biomathematical models. These models could be used to investigate the pathophysiological characters of AVF and AVM, to simulate the clinical treatment, and to examine the materials for embolization therapy. This article reviewed the formation of these models, evaluated their advantages and disadvantages, and briefly introduced their applications.

Objective: It is difficult to repair large-area Ⅲ?burn wound in children.Here we introduce the advantages of the back skin donor site in repairing Ⅲ?burn wound in children.Methods: This clinical study included 15 children with Ⅲ?burn,ranging in age from 18 months to 11 years(mean 7.6 years),with the Ⅲ?burn wound area averaging at 12.6% of the total body surface.The back skin donor site was used to repair the wound.The functional site,such as the joint,was preferentially considered if the skin graft was not enough for all the wounds.Results: Most of the skin grafts survived and the donor sites on the back healed very well.The patients were followed up for six months to three years,which revealed that the skin grafts remained soft without dysfunction and the scar hyperplasia was mild on the donor site.Conclusion: The back donor site supplies larger-area skin with good quality.The donor site heals fast.After healing,patients could sleep on back and compress the scar so as to prevent scar hyperplasia,and the scar does not affect the patient's appearance.With all these advantages,the back donor site is a good choice for repairing Ⅲ?burn wound in children.

Objective: Breast augmentation by polyacrylamide hydrogel(PAHG) injection has resulted in a series of adverse events in many female patients.This article summarizes the authors' experience in the diagnosis and treatment of lactational infection after breast augmentation by PAHG injection and discusses related preventive measures.Methods: This study included 2 patients who had developed infection during lactation 5 years after breast augmentation with PAHG.We identified the exact position of the PAHG and vomica by color Doppler,computerized tomography and magnetic resonance.We made incisions in the submammary fold or mammary areola to take out the PAHG,drain the pus and place the vacuum pressure tube,followed by application of pressure bandages.Results: One of the patients healed without any complication,while the other developed latex leak in both breasts,but finally cured after milk regurgitation and repeated changing of dressings.Conclusion: Lactational infection after breast augmentation by PAHG injection is detrimental to female patients.Preventive measures should be taken as early as possible.For patients with this infection,operation should be performed to take out the PAHG and drain the pus.Sufficient draining and milk regurgitation are necessary to avoid latex leak.

Objective:To investigate the distribution and evolution of immunocytes in infantile hemangioma(IH).Methods:Fifty-two infantile hemangioma samples were investigate.The distribution of CD3+T cells,CD8+T cells and S-100+dendritic cell(DC) in IH was observed with.Results:CD3+T cell was not found among the earliest IH.In the middle proliferating stage,the number of CD3+T cells increased;But the CD8+T cells were still scare.In the late proliferating stage,there were many CD3+T cells and the number of CD8+T cells also increased.In the early involuting stage,there were still a number of CD3+ and CD8+ T cells around the microvessels.In the middle involuting and involuted stage,only a few of CD3+T cells and CD8+ T cells existed.In the early proliferating stage,there were some DC in IH.During the middle and late proliferating stage,the number of DC increased significantly.Since the early involuting stage,the DCs decreased rapidly and disappeared.Conclusion:The distribution of T cells and its subsets and DC have close relationship with the pathologic evolution of infantile hemangioma.

Objective To investigate the plasma levels of glutamate (Glu) andγ-aminobutyric acid (GABA) in Par?kinson’s disease patients with depression (PDD) and their clinical significance. Methods Plasma levels of Glu and GA?BA were measured in 88 PD patients including 43 PDD patients and 45 PD patients without depression, and 68 healthy controls by using high performance liquid chromatography (HPLC-RF). Depression was assessed in enrolled subjects by using the Hamilton Depression Scale (HAMD). The plasma levels of Glu and GABA were compared among different groups and their associations with HAMD scores were subsequently evaluated by correlation analysis. Results The plas?ma levels of Glu and GABA were significantly lower in PD group(49.81±22.79,249.17±62.57)than in normal control group(149.59±50.08,276.66±85.43)(all P<0.05). In addition, PD patients with depression exhibited significantly low?er plasma levels of Glu and GABA(40.34±15.77 and 233.63±53.56)compared to PD patients without depression(58.86± 24.87 and 264.02±67.39)and healthy controls (all P<0.05). Correlation analysis indicated that HAMD scores were nega?tively associated with plasma levels of Glu ( r=-0.366,P=0.000 ) and GABA ( r=-0.217,P=0.043 ). Conclusion The decrease in plasma levels of Glu and GABA may be implicated in the pathogenesis of depression in PD patients.

In August 2022, a patient diagnosed with PIK3CA-related overgrowth syndrome (PROS) was admitted to the Department of Burn and Plastic Surgery of the General Hospital of Eastern Theater Command. A 15-year-old male patient presented with overgrowth of the left lower limb since birth, which had progressive aggravation six months ago, accompanied by erythema and dilated veins (42 cm ×24 cm) on the left waist. MRI showed that the soft tissue of the left and right thighs was asymmetrical. There was soft tissue hypertrophy of the left thigh, vascular malformation on the left waist and a left renal cyst. The vascular malformations on the left waist were treated by sclerotherapy with 3% polydocaol injection, for which the injection volume of was 7.1 ml. Immunohistochemistry of the pathological tissue showed that PIK3CA, AKT and mTOR were positive in vascular endothelial cells and epidermal basal cells. The genetic testing suggested that there was a mutation at c. 3190_3191insA (p.H1065fs) in PIK3CA gene. On the first year after the interventional sclerotherapy, the area of erythema decreased and the overgrowth of the left lower limb did not progress significantly. This case was diagnosed by clinical manifestations, pathological examination and genetic testing, which expanded the clinical phenotype of PROS and PIK3CA mutation spectrum, providing relevant clinical data for the study of this diseases.

In August 2022, a patient diagnosed with PIK3CA-related overgrowth syndrome (PROS) was admitted to the Department of Burn and Plastic Surgery of the General Hospital of Eastern Theater Command. A 15-year-old male patient presented with overgrowth of the left lower limb since birth, which had progressive aggravation six months ago, accompanied by erythema and dilated veins (42 cm ×24 cm) on the left waist. MRI showed that the soft tissue of the left and right thighs was asymmetrical. There was soft tissue hypertrophy of the left thigh, vascular malformation on the left waist and a left renal cyst. The vascular malformations on the left waist were treated by sclerotherapy with 3% polydocaol injection, for which the injection volume of was 7.1 ml. Immunohistochemistry of the pathological tissue showed that PIK3CA, AKT and mTOR were positive in vascular endothelial cells and epidermal basal cells. The genetic testing suggested that there was a mutation at c. 3190_3191insA (p.H1065fs) in PIK3CA gene. On the first year after the interventional sclerotherapy, the area of erythema decreased and the overgrowth of the left lower limb did not progress significantly. This case was diagnosed by clinical manifestations, pathological examination and genetic testing, which expanded the clinical phenotype of PROS and PIK3CA mutation spectrum, providing relevant clinical data for the study of this diseases.

ObjectiveTo observe andanalyze the clinical efficacy of needle knife treatment for knee meniscus injury from improving knee biomechanical balance and to provide a therapeutic basis and method for clinical practice.MethodOne hundred patients (112 knees) with knee meniscus injury meeting the inclusion criteria were allocated, in order of visits, to observation and control groups, 50 cases each. They were treated with a needle knife and an injection of sodium hyaluronate injectio into knee joint cavity, respectively. Changes in the indices were observed and assessed in the two groups by recording the plantar pressure analysis score and the knee function score before and after treatment and at follow-up. The clinical therapeutic effects were evaluated in the two groups.ResultThemaximum load, time integral difference value and load ratio around the knee joint decreased significantly in both observation and control groups after treatment and at follow-up (P<0.05). The regulating effect on knee joint force balance was better in theneedle knife group than in the control group (P<0.05). The improving effect on knee joint function was significantly better in the observation group than in the control group (P<0.01). The excellence rate was significantly higher in the observation groupthan in the control group after treatment and at follow-up (P<0.05).ConclusionNeedle knife treatment restores the function of the knee joint by loosing focal soft tissues around the knee joint, improving knee joint load imbalance and correcting the mechanical equilibrium around the knee joint in patient with knee meniscus injury. It has a definite curative effect on the disease.

Objective:Meta analysis was used to evaluate the diagnostic value of miRNA-25 in different malignant tumors in Chinese population.Methods:The research on the diagnostic value of miRNA-25 in China national knowledge internet (CKNI), VIP, Wanfang, PubMed and EMBase was searched. The publication time was from the establishment of database to October 2019. After the data was extracted, the Meta.DiSc1.4 software was used for preliminary statistical analysis. The Review Manager 5.3's QUADAS-2 tool was used for quality control of the incoming literature. The STATA 15.0 software was used to analyze whether there was publication bias.Results:A total of 10 articles were included in the study, including 792 cases in the case group and 715 cases in the control group. The combined sensitivity, combined specificity, combined specificity, combined positive likehood ratio(PLR), negative likehood ratio (NLR) were 0.71(95% CI: 0.69-0.74), 0.84(95% CI: 0.81-0.86), 4.29(95% CI: 3.39-5.42), 0.35(95% CI: 0.31-0.40), respectively. Diagnostic odds rate (DOR) was 13.09(95% CI: 9.64-17.78), and the area under curve (AUC) was 0.80(95% CI: 0.77-0.84). Subgroup analysis showed that the diagnostic value of miRNA-25 for different malignant tumors suggested that the lung cancer group had the highest diagnostic value and specificity (DOR=16.418, SPE=0.863). Funnel plot indicated that no significant publication bias was found ( P=0.21). Conclusions:miRNA-25 is highly sensitive and specific to different malignancies, especially lung cancer, and can be used as a potential screening biomarker to assist diagnosis.

Objective To study the relationship between plasma neurodegenerative protein level and non-motor symptoms(NMS)in PD patients.Methods Eighty-four PD patients served as a PD group and 54age-matched persons undergoing physical examination served as a control group. The NMS of PD patients were assessed according to the HAMD scale.The plasma levels of tau,p-tau181,Aβ-42andα-syn were measured by ELISA and analyzed by Spearman correlation analysis and binary logistic regression analysis respectively.Results The FSS score and plasmaα-syn level were significantly higher while the plasma Aβ-42level was significantly lower in PD group than in control group(3.22±1.68 vs 1.89±1.16,P=0.000;320.00±64.91ng/L vs 277.78±52.75ng/L,P=0.000;267.61±77.75ng/L vs 321.80±49.41ng/L,P=0.001).No significant difference was detected in plasma tau and p-tau181levels between the two groups(P＞0.05).The plasmaα-syn level was positively related with the FSS score(r=0.237,P=0.030)and was an influencing factor of FSS(OR=1.019,95％CI:1.006-1.032,P=0.004).Conclusion Plasma neurodegenerative protein level is related with NMS and plasmaα-syn level is a peripheral biomarker for fatigue in PD patients.