Objective To identify flavonoid glycosides with quorum sensing inhibitory activity from Epimedium brevicornum and evaluate their bioactivity. Methods The minimum inhibitory concentrations （MICs） of five major flavonoid glycosides （baohuoside, icariin, epimedin A/B/C） and the extract of E. brevicornum were firstly determined. Subsequently, the inhibitory effects on the production of purple pigments in Chromobacterium violaceum CV026 were measured. Additionally, the biofilm formation and chitin quantification of Pseudomonas aeruginosa PAO1 were assessed. Results The extract of E. brevicornum and its primary components exhibited significant quorum sensing inhibitory activity. Particularly, icariin and epimedin C demonstrated superior inhibitory activity. Conclusion E. brevicornum demonstrates the ability to inhibit the quorum sensing system of Chromobacterium violaceum CV026 and Pseudomonas aeruginosa PAO1. Furthermore, icariin and epimedin C （100 μg/ml） show promise for development into novel drugs for quorum sensing inhibitor.

Objective:To study the antibacterial properties and in vivo and vitro biocompatibility of Cu-Fe-Zn alloy microfilament dressings, and to evaluate their wound healing promoting effect through clinical application.Methods:We evaluated the comprehensive antibacterial performance of dressings in vitro using plate counting method; After co culturing the extract of Cu-Fe-Zn alloy microfilament dressings with epidermal cells (HaCaT) and fibroblasts (NIH-3T3), their in-vitro biocompatibility was determined through the cell counting kit-8 (CCK-8) test; Further, Cu-Fe-Zn alloy microfilament dressing was applied to the wound surface of diabetes mice to test the biocompatibility of the material in vivo; Through a prospective randomized controlled trial, 50 burn and trauma patients admitted to the Burn and Plastic Surgery Department of the Third Xiangya Hospital of Central South University were selected and divided into an observation group of 25 patients and a control group of 25 patients. The observation group was treated with Cu-Fe-Zn alloy microfilament dressing, and the control group was treated with silver nanoparticle antibacterial dressing. The wound healing time and wound treatment effect of the two groups were compared.Results:The Cu 2+ release concentration of Cu-Fe-Zn alloy microfilament dressings detected by inductively coupled plasma-mass spectrometry (ICP-MS) was 1.3 μ g/ml, which had the effect of promoting the proliferation of HaCaT and NIH-3T3 cells (all P<0.05). The antibacterial rate of Cu-Fe-Zn alloy microfilament dressing against pseudomonas aeruginosa, escherichia coli and staphylococcus aureus reached 100%. The wound healing rate [(87.39±1.83)%] of diabetes mice treated with Cu-Fe-Zn alloy microfilament dressing was significantly higher than that of the control group [(58.66±3.54)%, P<0.05]. The inflammatory response of the wound tissue was relatively mild and the wound margin matrix was intact. The wound healing time of 25 patients treated with Cu-Fe-Zn alloy microfilament dressing [(23.52±10.02)d] was shorter than that of the control group [(40.84±21.22)d] ( t=17.159, P<0.001), and the overall treatment response rate of patients (96%) was significantly higher than that of the control group patients (64%) (χ 2=8.472, P=0.015). Conclusions:Cu-Fe-Zn alloy microfilament dressings have good antibacterial properties and biocompatibility, and have significant therapeutic effects on promoting wound healing. They not only effectively promote wound healing but also exert anti infection effects, and are expected to be a new type of wound repair dressing.

Objective:To evaluate the classification of petroclival meningiomas(PCM), proposed selection of microsurgical approach and therapeutic outcomes.Methods:Retrospectively analyzed clinical data of 179 cases of PCM from Department of Neurosurgery, Xiangya Hospital, Central South University between January 2011 and November 2020. There were 28 males and 151 females with an age of(49.9±10.2) years(range: 22 to 75 years) and the tumor size of(44.8±10.3)mm(range: 15 to 80 mm). The mean duration of symptom ( M( Q R)) was 18.0(40.6)months(range:1 week to 320 months) and the mean preoperative Karnofsky performance scale(KPS) was 78.6±13.3(range: 40 to 100). The PCM were classified into 5 types according to the difference in the origin of dural attachment, involvement of adjacent structures and growth patterns through preoperative MRI. The surgical approaches were selected based on the proposed classification, and the clinical characteristics, surgical record, and follow-up data of each type were reviewed. Results:The PCM were divided into clivus type(CV, 4 cases), petroclival type(PC, 60 cases), petroclivosphenoidal type(PC-S, 62 cases), sphenopetroclival type with 2 subtypes(S-PC, 50 cases) and central skull base type(CSB, 3 cases). All of 176 cases were obtained microsurgical treatment except CSB type. The gross total resection reached in 124 cases(70.5%) with 112 cases of retrosigmoid approach(RSA), 27 cases of subtemporal transtentorial transpetrosal approach, 13 cases of pretemporal trancavernous anterior transpetrosal approach(PTCA), 12 cases of extended pterional transtentorial approach(EPTA) and presigmoid combined supra-infratentorial approach, respectively. The RSA could be adopted in both of CV type and PC type and most of PC-S type(71.0%). S-PC subtype Ⅰ and subtype Ⅱ were mainly underwent EPTA(40.8%) and PTCA(52.2%), respectively. Seventy-two cases(40.9%) gained new neurological dysfunctions mainly with the cranial nerve paralysis. The postoperative morbidity and complications were recovered or improved with conservative and positive symptomatic and supportive treatment. There was no intraoperative and postoperative death case. One hundred and sixty four cases(93.2%) of operative patients were followed with the duration of 24(48)months(range:3 to 108 months). Tumor recurrence and progress were identified in 14 cases(10.4%) and 14 cases(28.6%), respectively. Compared with postoperative neurological status, 89 patients(54.3%) had improved and 38 patients(23.2%) were still suffering various degrees of neurological dysfunctions during the follow-up. The recent KPS was 84.2±11.4(range: 50 to 100) without statistical difference from preoperative KPS ( t=-1.356, P=0.125). As for each type, there were statistically significant differences in brain stem edema (χ 2=3.482, P=0.038), gross total resection (χ 2=9.127, P=0.001), surgical duration( F=8.954, P=0.013), postoperative length of stay( F=3.652, P=0.025), postoperative complications (χ 2=1.550, P=0.024), postoperative KPS( F=2.856, P=0.042) and tumor recurrence/progress (χ 2=4.824, P=0.013). Conclusion:The precise and comprehensive classification of PCM and specific individual treatment strategy are benefit to evaluate the diverse clinical prognosis, choose optimal surgical approaches, elevate gross total resection, diminish neurological dysfunctions and restraint tumor recurrence, so as to improve the quality of life for patients.

Objective:To evaluate the classification of petroclival meningiomas(PCM), proposed selection of microsurgical approach and therapeutic outcomes.Methods:Retrospectively analyzed clinical data of 179 cases of PCM from Department of Neurosurgery, Xiangya Hospital, Central South University between January 2011 and November 2020. There were 28 males and 151 females with an age of(49.9±10.2) years(range: 22 to 75 years) and the tumor size of(44.8±10.3)mm(range: 15 to 80 mm). The mean duration of symptom ( M( Q R)) was 18.0(40.6)months(range:1 week to 320 months) and the mean preoperative Karnofsky performance scale(KPS) was 78.6±13.3(range: 40 to 100). The PCM were classified into 5 types according to the difference in the origin of dural attachment, involvement of adjacent structures and growth patterns through preoperative MRI. The surgical approaches were selected based on the proposed classification, and the clinical characteristics, surgical record, and follow-up data of each type were reviewed. Results:The PCM were divided into clivus type(CV, 4 cases), petroclival type(PC, 60 cases), petroclivosphenoidal type(PC-S, 62 cases), sphenopetroclival type with 2 subtypes(S-PC, 50 cases) and central skull base type(CSB, 3 cases). All of 176 cases were obtained microsurgical treatment except CSB type. The gross total resection reached in 124 cases(70.5%) with 112 cases of retrosigmoid approach(RSA), 27 cases of subtemporal transtentorial transpetrosal approach, 13 cases of pretemporal trancavernous anterior transpetrosal approach(PTCA), 12 cases of extended pterional transtentorial approach(EPTA) and presigmoid combined supra-infratentorial approach, respectively. The RSA could be adopted in both of CV type and PC type and most of PC-S type(71.0%). S-PC subtype Ⅰ and subtype Ⅱ were mainly underwent EPTA(40.8%) and PTCA(52.2%), respectively. Seventy-two cases(40.9%) gained new neurological dysfunctions mainly with the cranial nerve paralysis. The postoperative morbidity and complications were recovered or improved with conservative and positive symptomatic and supportive treatment. There was no intraoperative and postoperative death case. One hundred and sixty four cases(93.2%) of operative patients were followed with the duration of 24(48)months(range:3 to 108 months). Tumor recurrence and progress were identified in 14 cases(10.4%) and 14 cases(28.6%), respectively. Compared with postoperative neurological status, 89 patients(54.3%) had improved and 38 patients(23.2%) were still suffering various degrees of neurological dysfunctions during the follow-up. The recent KPS was 84.2±11.4(range: 50 to 100) without statistical difference from preoperative KPS ( t=-1.356, P=0.125). As for each type, there were statistically significant differences in brain stem edema (χ 2=3.482, P=0.038), gross total resection (χ 2=9.127, P=0.001), surgical duration( F=8.954, P=0.013), postoperative length of stay( F=3.652, P=0.025), postoperative complications (χ 2=1.550, P=0.024), postoperative KPS( F=2.856, P=0.042) and tumor recurrence/progress (χ 2=4.824, P=0.013). Conclusion:The precise and comprehensive classification of PCM and specific individual treatment strategy are benefit to evaluate the diverse clinical prognosis, choose optimal surgical approaches, elevate gross total resection, diminish neurological dysfunctions and restraint tumor recurrence, so as to improve the quality of life for patients.

To explore the influence of preventive use of vasopressin tannate on diabetes insipidus and serum sodium at the early postoperation of craniopharyngioma.
 Methods: The data of 83 patients, who underwent unilateral sub-frontal approach resection of craniopharyngioma between 2010 and 2014 by the same senior neurosurgeon, were retrospectively analyzed. The patients were divided into a vasopressin tannate group (used group) and a control group. The diabetes insipidus and serum sodium changes were compared between the two groups.
 Results: Compared with the control group, the incidence of diabetes insipidus decreased at the early postoperation in the vasopressin tannate group (P<0.05). There was high incidence of diabetes insipidus in patients with pituitary stalk excision and tumor close adhesion to the third ventricle floor at the early postoperation (P<0.05). Under such conditions, the incidence of diabetes insipidus in the vasopressin tannate group was decreased compared with the control group (P<0.05). Postoperative hypernatremia occurred in 37 patients (44.6%), and hyponatremia occurred in 60 patients (72.3%), the average time of the occurrence of hpernatremia and hyponatremia was 1.4 and 3.7 days after surgery. Postoperative high serum sodium and low serum sodium appeared alternately in 19 patients (22.9%). There was significant difference in the serum sodium distribution in the first day after surgery in both groups (P<0.05), and the percent of hpernatremia in the vasopressin tannate group was significantly less than that in the control group (P<0.05).
 Conclusion: Preventive use of vasopressin tannate can effectively reduce diabetes insipidus and hypernatremia incidence at the early postoperative stage after microsurgery for craniopharyngioma.
Arginine Vasopressin ; therapeutic use ; Craniopharyngioma ; complications ; surgery ; Diabetes Insipidus ; prevention & control ; Female ; Humans ; Hypernatremia ; epidemiology ; prevention & control ; Hyponatremia ; epidemiology ; Incidence ; Male ; Microsurgery ; adverse effects ; Pituitary Gland ; surgery ; Pituitary Neoplasms ; Postoperative Complications ; prevention & control ; Postoperative Period ; Retrospective Studies

OBJECTIVETo identify factors that predictive of quality of life after microsurgical removal of petroclival meningiomas.

METHODSA consecutive series of 71 cases of petroclival meningiomas received microsurgical removal between July 1991 and April 2010 were analyzed retrospectively. Quality of life was measured using Karnofsky performance scale (KPS). Complete pre-operative, post-operative and follow-up data were obtained from all 71 patients including 18 male and 53 female patients with the mean age of (47 ± 11) years (aging from 15 to 68 years). The duration between onset of symptoms and diagnosis ranged from 1 week to 180 months with the mean duration of (32 ± 30) months. And the tumor size was 15-72 mm with the average of (44 ± 11) mm. Main presentations included headache, unsteady gait, hemiparesis, dysphagia, hoarseness, facial numbness or pain, Bell's palsy, hearing impairment etc. The preoperative KPS was 40-100 with the average of 69 ± 11. The retrosigmoid (-transtentorial) approach was performed in most cases (91.5%). Intergroup χ² test and logistic regression analysis were conducted for prognostic factor characterization.

RESULTSThe gross total resection (all were Simpson gradeII) reached in 48 cases (67.6%) and 1 case died postoperatively. The main new neurological dysfunctions were cranial nerve paralysis and hemiplegia with the postoperative KPS of 20-100 with the average of 73 ± 16.Sixty-four cases were followed for 4-132 months with the average of (61 ± 48) months. Seven patients died during follow-up, tumor recurrence and progression were identified in 6 and 8 cases, respectively. The KPS at the last visit ranged from 50 to 100 with the average of 83 ± 13. The extent of tumor resection (OR = 0.280, 95% CI: 0.081-0.967, P = 0.044), preoperative brainstem edema (OR = 0.100, 95% CI: 0.027-0.372, P = 0.001), relationships between tumor and neurovascular structures (OR = 0.288, 95% CI: 0.084-0.985, P = 0.047) and depth of invasion into cavernous sinus (OR = 0.254, 95% CI: 0.061-1.057, P = 0.048) had significant correlations with the prognostic quality of life.

CONCLUSIONSWith regard of the choice of surgical approaches, the extent of tumor resection, the protection of neurovascular structures surrounding the tumor and the management of perioperative period, the therapeutic strategies for each patient should be customized to achieve better prognosis.

Adolescent ; Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Male ; Meningeal Neoplasms ; diagnosis ; surgery ; Microsurgery ; Middle Aged ; Prognosis ; Quality of Life ; Retrospective Studies ; Treatment Outcome ; Young Adult

OBJECTIVE: To investigate the protective effect of combined ischemic preconditioning and postconditioning against cerebral ischemia/reperfusion (I/R) injury and the potential mechanism. METHODS: Sixty SD rats were randomized into a sham operation group, a brain I/R group (model group), a brain I/R plus preconditioning group (preconditioning group), a brain I/R plus postconditioning group (postconditioning group), and a brain I/R plus preconditioning and postconditioning group (combined intervention group). The rat brain I/R injury model was created by suture emboli method. Preconditioning was induced by 3 cycles of 15 s occlusion followed by 30 s recanalization of the middle cerebral artery twice respectively at 24 h and 1 h before model creation, and postconditioning was elicited by 3 cycles of 30 s reperfusion followed by 15 s ischemia before long time reperfusion. The rats were sacrificed at 48 h after the reperfusion. The cerebral infarct volume and oxidative stress parameters as well as p-Akt and p-ERK1/2 protein expressions in the brain tissues were determined. RESULTS: The cerebral infarct volumes showed no significant difference between the preconditioning group and the postconditioning group (P>0.05), but both were smaller than that in the model group and larger than that in the combined intervention group (all P values<0.01). In the model group, the level of oxidative stress was markedly increased (SOD activity increased and MDA level decreased), and both p-Akt and p-ERK1/2 protein expressions in the brain tissues were upregulated compared with those in the sham group (all P<0.01). Compared with the model group, the oxidative stress parameters presented no evident difference in preconditioning group (P>0.05), but p-Akt expression was slightly upregulated and p-ERK1/2 was remarkably down-regulated (P<0.05 and P<0.01) In the postconditioning group, the level of oxidative stress was significantly decreased, and p-Akt expression was dramatically increased with a mild down-regulation of p-ERK1/2 expression (P<0.01 and P<0.05). In the combined intervention group, the oxidative stress decrease the p-Akt expression rise and p-ERK1/2 expression inhibition were significantly greater than those in either the preconditioning group or the postconditioning group (all P values<0.01). CONCLUSION Combined treatment of preconditioning and postconditioning exerts stronger protective effect against cerebral I/R injury than either preconditioning or postconditioning alone. The mechanism is possibly due to the different but complementary protection of preconditioning and postconditioning against I/R injury.
Animals ; Brain Ischemia ; pathology ; Cerebrum ; pathology ; Down-Regulation ; Ischemic Postconditioning ; Ischemic Preconditioning ; Oxidative Stress ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; therapy ; Up-Regulation

Objective:To study the effect of microsurgery for parasellar menningiomas and to analyze the impact factors of recurrence. Methods:Clinical and follow-up data in a consecutive series of 134 patients with parasellar meningiomas were retrospectively analyzed. Results:A total of 109 patients (81.3%) had radical removal (Simpson grade I and II), and 116 patients were followed up for an average period of 81.6 months. The mean quality of life score (KPS) was 91.9, 90 patients regained full daily activity and 16 patients were able to take care of themselves. Oculomotor paralysis occurred in 7 patients, epilepsy in 8, and another 9 patients suffered hemispheral paralysis. Tumor recurred atfer the radical removal in 12 out of the 96 follow-up patients (12.5%). Tumor progressed atfer subtotal removal in 12 out of the 20 follow-up patients (60%). Tumor with cavernous sinus (CS) invasion had significantly higher risk of recurrence campared with non-CS invasion (P=0.043). The recurrence rate increased with the pathological grade (P<0.01). Conclusion:Patients with parasellar meningiomas undergoing microsurgical resection may have a good long-term function outcome. For most patients, total removal by microsurgery is the ifrst choice. Careful follow-up is needed if tumor invaded the CS and radiosurgery is proposed for WHO grade 1 and 2.

OBJECTIVE: To discuss the clinical features of chronic subdural hematoma (CSDH) in different age groups. METHOD: A total of 417 patients with CSDH were divided into 3 groups: 0 to 39, 40 to 59 and elder than 60 years. We analyzed the clinical features in different groups, including sex, trauma history, potential hemorrhage factors, trauma to symptoms interval, encephalatrophy, onset symptom and hematoma volume. RESULTS: The incidence of trauma, potential hemorrhage factors, encephalatrophy, consciousness disorders and paralysis increased with age, while the incidence of intracranial hypertension symptoms and seizures decreased with age (P<0.001). The trauma to symptom interval in the group elder than 60 was longer than in other groups (P<0.05) and the hematoma volume increased with age(P<0.05). CONCLUSION The clinical features of CSDH including onset symptoms, trauma history, potential hemorrhage factors, encephalatrophy, trauma to symptoms interval and hematoma volume vary in different age groups.
Adolescent ; Adult ; Age Factors ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Diagnosis, Differential ; Female ; Hematoma, Subdural, Chronic ; diagnosis ; Humans ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Young Adult

OBJECTIVE: To introduce a kind of method for skull base reconstruction after resecting anterior skull base tumors involving paranasal sinuses. METHOD: A retrospective analysis was carried out on 13 patients who underwent anterior skull base reconstruction. Pericranial flap were detached with integrity from the frontal bone during craniotomy, after the tumor had been resected partitionedly, the cribriform plate of ethmoid bone which was involved by tumor was resected. Using the fat tissue to fill the skull-base defects and sutured the pedicled pericranial flap with surrounding normal dura mater. Then reinforced at the junction of pericranial flap and dura mater with biogel. RESULT: The pathogenic diagnosis of all cases were meningioma. I grade resection was acquired in 12 cases and II grade in 1 case according to Simpson grading standard of meningioma resection. The postoperative complications were 3 cases aseptic meningitis, 3 cases frontal syndrome. No CSF leakage, intracranial infection, nor death occurred. An average of 3. 4-year follow-up was achieved in all the cases from 9 months to 8 years, no tumor relapse. CONCLUSION CSF leakage can be effectively prevented by filling the skull-base defects with the fat tissue, suturing the pedicled pericranial flap with surrounding normal dura mater, and reinforcing at the junction of pericranial flap and dura mater with biogel.
Adult ; Aged ; Cerebrospinal Fluid Rhinorrhea ; prevention & control ; Female ; Humans ; Male ; Meningeal Neoplasms ; prevention & control ; surgery ; Meningioma ; pathology ; surgery ; Middle Aged ; Postoperative Complications ; prevention & control ; Reconstructive Surgical Procedures ; methods ; Retrospective Studies ; Skull Base ; surgery ; Skull Base Neoplasms ; pathology ; surgery