Objective To investigate the expression of vascular endothelial growth factor (VEGF) and aquaporin 4 (AQP4) in giiomas and brain metastases, and explore the role of VEGF and AQP4 in the histopathology and formation of peritumoral edema of primary and metastatic gliomas. Methods Immunohistocbemical method was used to examine the protein expression of VEGF and AQP4 in 73 paraffin-embeded, pathologically confirmed glioma and 15 metastatic tumor specimens collected between 1999 and 2001. Eight normal brain tissue specimens were used as the control. Results VEGF protein was not detected in normal brain tissues. VEGF expression was detected in gliomas and the expression level increased obviously along with the histological grade of the tumor. Significant differences were found in VEGF expression between malignant and low-grade gliomas, between low-grade gliomas and normal brain tissues, and between intracranial metastatic tumors and normal brain tissues and low-grade gliomas (P<0.05), but not between intracranial metastatic tumors and malignant gliomas (P>0.05). AQP4 protein expression was found in all the collected samples, and its expression differed significantly between normal brain tissues and malignant gliomas or intracranial metastatic tumors, and also between low-grade gliomas and malignant gliomas or intracranial metastatic tumors (P<0.05), but not between normal brain tissues and low-grade gliomas or between intracranialmetastatic tumors and malignant gliomas (P>0.05). VEGF protein expression showed a significant positive correlation to AQP4 protein expression (r=0.516, P<0.05). Conclusion As important molecular biological factors, VEGF and AQP4 participate in the formation peritumoral brain edema of gliomas and exhibit a synergie effect in this process.

Animals ; Cells, Cultured ; Chitosan ; pharmacology ; DNA, Viral ; isolation & purification ; Hepatocytes ; virology ; Nanofibers ; Primary Cell Culture ; Swine ; Transplants ; virology

OBJECTIVETo explore the effect of one dressing of porcine acellular dermal matrix on deep partial thickness burns.

METHODSFrom January 1997 to January 2004, sixty-seven cases of deep partial thickness total burned surface area (TBSA) from 50% to 90% burn wound were treated by a single dressing of porcine acellular dermal matrix (the porcine acellular dermal matrix group). Ten cases of deep partial thickness burned patients with the same TBSA treated by exposure method served as the exposure method group. The healing time of the wound was observed. The patients were followed up for 3 months to 2 years, and the scar proliferation was observed.

RESULTSThe deep partial-thickness wound would be healed without dressing change in the porcine acellular dermal matrix group, and the average healing time was (12.2 +/- 2.6) days. The average healing time of the exposure method group was (27.4 +/- 3.5) days. Follow up of the patients within 3 months to 2 years showed that scar proliferation in the porcine acellular dermal matrix group was much less than that in the exposure method group, even no scar proliferation was observed in some patients.

CONCLUSIONWithout tangential excision, autografting and dressing change, a single dressing of porcine acellular dermal matrix on deep partial thickness burn wound could shorten the healing time and inhibit scar proliferation.

Animals ; Biological Dressings ; Burns ; pathology ; therapy ; Cicatrix ; prevention & control ; Female ; Follow-Up Studies ; Humans ; Male ; Swine ; Treatment Outcome ; Wound Healing

AIM: To investigate whether Toll-like receptor 4 ( TLR4 ) and Nod-like receptor protein 3 (NLRP3) inflammasome were involved in contrast medium (CM)-induced inflammation and injury in renal tubular epithe-lial cells.METHODS: Iopromide was used to injure NRK-52E cells in the study.The cell viability was measured by CCK-8 assay.The protein levels of TLR4, NLRP3, apoptosis-associated speckle-like protein (ASC), caspase-1 and cleaved caspase-3 were determined by Western blot .The releases of interleukin ( IL )-1βand IL-18 were detected by ELISA .The apoptotic rate was evaluated by Hoechst staining , and mitochondrial membrane potential ( MMP) was analyzed by JC-1 staining.siRNA was transfected into the NRK-52E cells to silence NLRP3 expression.RESULTS:CM decreased the viability of NRK-52E cells (P<0.05).CM also elevated the protein levels of cleaved caspase-3, TLR4, NLRP3, IL-1βand IL-18 (P<0.05).Silencing NLRP3 attenuated CM-induced releases of inflammatory cytokines .Moreover, treat-ment with TLR4 inhibitor TAK-242 or knockdown of NLRP3 by siRNA transfection both attenuated cell apoptosis and loss of MMP caused by CM .CONCLUSION:TLR4/NLRP3 inflammasome takes part in the pathogenesis of CM-induced acute kidney injury , and mediates CM-induced injury and inflammation in renal tubular epithelial cells .

BACKGROUND: Posterior screw rod system reduction and internal fixation is often used to treat thoracolumbar fractures (T11-L2). However, the "shell" phenomenon is focused on imaging findings and lacks of in-depth clinical research. OBJECTIVE: To explore the new method of "shell" volume measurement of vertebral body after thoracolumbar fractures reduction, and to evaluate the effect of different "shell" sizes on clinical treatment. METHODS: From January 2013 to December 2015, 72 patients with thoracolumbar fractures were treated in the No. 4 People's Hospital of Zigong City retrospectively. The patients with vertebral "shell" were retrospectively analyzed. Clinical and imaging data (X ray, CT and MRI) were collected. Compression degree of anterior border of the vertebral body, Cobb angle, Visual Analogue Scale score and reduction-related complication were recorded and analyzed. The volumes of vertebral "shell" and the injured vertebral body were measured by Mimics software. The volume ratio of shell/injured vertebral body was calculated. The healing of vertebral "shell" was followed up and observed. RESULTS AND CONCLUSION: (1) Among the 72 patients, there were 16 cases with a shell/injured vertebral volume ratio of < 5% (group A), 30 cases with the volume ratio of 5%-10% (group B), and 26 cases with volume ratio of > 10% (group C). (2) The "shell" healing: The "shell"nonunion rate was significantly lower in the groups A and B than in the group C (P < 0.05); and significant differences were not determined between groups A and B (P > 0.05). (3) Compression degree of the anterior border of the injured vertebral body: No significant difference was found in groups A, B and C before and right after reduction (P > 0.05). The compression was significantly higher in the groups A and B than in group C at final follow-up (P < 0.05). (4) Cobb angle was not significantly different in groups A, B and C before and right after reduction and during final follow-up (P > 0.05). (5) Visual Analogue Scale score was not significantly different between groups A and B and group C right after reduction (P > 0.05). The Visual Analogue Scale score was significantly better in the groups A and B than in the group C (P < 0.05). (6) Occurrence of complications: In the group A, one case affected incision exudate. In the group B, one case experienced incision infection and one case suffered from screw loosening. In the group C, two cases affected screw loosening, and one case experienced unilateral connecting rod fracture. No significant difference in complications was detected among groups A, B and C (P > 0.05). (7) Results indicate that the "shell"nonunion rate was high when vertebral shell/injured vertebral body volume ratio > 10%; loss of posterior vertebral height and chronic lumbago and back pain easily appeared. The measurement of the volume of vertebral "shell" plays an important role in clinical prognosis and treatment options of thoracolumbar judgment.

BACKGROUNDCongenital myasthenic syndromes are a group of rare disorders that are clinically and genetically heterogeneous and caused by mutations in the genes encoding proteins of the neuromuscular junction. Here, we described a Chinese family that presented with phenotypes of classic slow-channel congenital myasthenic syndrome (SCCMS).

METHODSClinical characteristics and electrophysiological features of three patients from a Chinese family were examined, and next-generation sequencing followed by direct sequencing was carried out.

RESULTSThe patients revealed variability in clinical and electrophysiological features. However, weakness, scoliosis, and repetitive-compound muscle action potential were found in all affected members in the family. A heterozygous C>T missense mutation at nucleotide 865 in acetylcholine receptor epsilon-subunit (CHRNE) gene that causes a leucine-to-phenylalanine substitution at position 289 (L289F) was found.

CONCLUSIONSWe reported a SCCMS family of Chinese origin. In the family, classical clinical phenotype with phenotypic variability among different members was found. Genetic testing could help diagnose this rare disease.

Adult ; DNA Mutational Analysis ; Electrophysiology ; Female ; Humans ; Male ; Mutation, Missense ; genetics ; Myasthenic Syndromes, Congenital ; genetics ; physiopathology ; Receptors, Nicotinic ; genetics ; Young Adult

OBJECTIVETo investigate the role of xenogenic (porcine) ADM as dermal substitute in scar treatment.

METHODSAfter scar excision, the wounds were covered with composite grafts of DR procine ADM and autologous thin split-thickness grafts in one stage or in two stages.

RESULTS22 out of 47 cases were treated in two-staged procedure. After the ADMs were applied to the wound, the autologous thin split-thickness grafts were implanted 7 days later. 25 cases were treated in one-staged procedure. The survival rates of composite grafts were (88.3 +/- 3.7)% for subcutaneous recipient bed and (89.7 +/- 3.4)% for deep fascia recipient bed in group with two-staged procedure, compared with (92.5 +/- 4.1)% and (93.2 +/- 5.2)%, respectively, in group with one-staged procedure. Early after grafts taken, the grafts had a pink colour and smooth surface. The patients were followed up for 90 days at most. The survived composite grafts were durable, elastic, smooth and soft with good function and appearance like normal skin. They could even be pinched up. The scar along the edge of the grafts was slightly hypertrophic.

CONCLUSIONSThe survival rate of composite graft is higher in patients with one-staged procedure. The elasticity and textural of the taken grafts are better on subcutaneous recipient bed than on deep fascia recipient bed, though the function has no difference. Xenogenic (porcine) ADM can be an optimal dermal substitute for wound coverage after scar excision.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Animals ; Child ; Child, Preschool ; Cicatrix ; surgery ; Dermis ; cytology ; transplantation ; Humans ; Male ; Middle Aged ; Skin, Artificial ; Swine ; Transplantation, Heterologous ; Young Adult

Objective To explore the regional differences of body anthropometric traits in the Han population. Methods From 2015 to 2019, thirty-one body anthropometric traits of three Han ethnic groups were measured from Nanning (Guangxi), Zhengzhou (He'nan), and Taizhou (Jiangsu). The gender and regional difference analysis of each trait, and the correlation analysis between age and traits were carried out. Based on the principal component analysis of individual data of body phenotypic traits, the traits with significant regional difference were extracted to finely describe the physical characteristics of the Han peoplpe in the three regions. Results Most of the anthropometric traits of the three Han populations were statistically different in gender and region, and there was a positive or negative correlation between certain traits and age. The result of principal component analysis based on individual data showed that there were obvious regional differences in body anthropometric traits of the Han people. The difference between the Han Chinese in Guangxi ( south of the Yangtze River ) with He ' nan ( north of the Huaihe River ) and Jiangsu was relatively large, and difference was relatively small between He ' nan and Jiangsu Han Chinese. Meanwhile the Han Chinese in Jiangsu had its own characteristics in part of the phenotypic traits, which could be distinguished from the Han Chinese in He ' nan. Conclusion The research on the body anthropometric traits confirmed that there were significant regional differences in Han population, and suggested that the Yangtze River might be the largest geographic barrier for the population migration and genetic exchange between the north and south population.

Objective: To investigate the possible pathophysiological mechanism of laryngopharyngeal reflux (LPR) in the development of lingual tonsil hypertrophy (LTH). Methods: The lingual tonsil tissues were collected from 73 patients [48 males and 25 females, aged from 24 to 76 (52.86±12.04) years] who underwent surgery for laryngopharyngeal diseases at the Department of Otolaryngology and Head and Neck Surgery, Southern Hospital of Southern Medical University from October 2019 to December 2020, and the lingual tonsil grade (LTG), reflux symptom index (RSI) and reflux finding score (RFS) were assessed. The expression of pepsin in LTH was detected by immunohistochemistry. The coexpression of pepsin and macrophages were detected by immunohistofluorescence. In vitro, cytological experiments and pathway assays were performed on macrophages stimulated by pepsin. Pathway alterations of macrophages in pepsin-positive high-grade LTH were detected by double-fluorescence immunohistochemistry. Data were analyzed by SPSS 20.0 software. Results: There were 44 clinically significant LPRD patients with LTG 3 and 4, and the pepsin positive rate was 88.6% (39/44). While, the pepsin positive rate of LTG 1 and 2 was 48.3% (14/29). LTG was significantly positively correlated with RFS/RSI positive rate(χ²=23.01/19.62, P<0.001/0.001; r=0.54/0.51, P<0.001/0.001) and pepsin tissue staining intensity (H=21.58, P<0.001; r=0.53, P<0.001), respectively. Pepsin and macrophages were clearly colocalized in high grade LTH. In vitro, pepsin promoted macrophage proliferation (P<0.05) and production of IL-6/IL-8 (P<0.05). Pepsin significantly up-regulated the p38/JNK MAPK pathway in macrophages (P<0.05). Pepsin up-regulated the expression of IL-6 and IL-8 of macrophages by activating the p38 MAPK pathway (P<0.05), and up-regulated the expression of IL-8 by activating the JNK pathway (P<0.05). The p38/JNK MAPK pathways were highly expressed in macrophages of pepsin-positive LTH (P<0.05). Conclusions: LPR is an important pathogenic factor in LTH. Macrophages may mediate pepsin-induced inflammation and the pathogenesis of LTH.
Female ; Male ; Humans ; Palatine Tonsil ; Pepsin A ; Interleukin-6 ; Interleukin-8 ; Hypertrophy ; Macrophages ; Laryngopharyngeal Reflux

OBJECTIVE: To compare the efficacy between vesselplasty and percutanous kyphoplasty (PKP) in the treatment of Kümmell disease. METHODS: The clinical data of patients with Kümmell disease from July 2018 to December 2019 were retrospectively analyzed. According to the different therapeutic methods, the patients were divided into vesselplasty group and PKP group. There were 20 patients in vesselplasty group, including 2 males and 18 females, aged from 54 to 83 years with an average of (67.40±7.44)years, 1 case of T₁₀ fracture, 3 cases of T₁₂ fracture, 9 cases of L₁ fractures, 5 cases of L₂ fractures and 2 cases of L₃ fractures. There were 20 patients in PKP group, including 3 males and 17 females, aged from 56 to 81 with an average of(67.20±7.01) years, 2 cases of T₁₀ fracture, 1 case of T₁₁ fracture, 6 cases of T₁₂ fracture, 10 cases of L₁ fracture and 1 case of L₃ fracture. Visual analogue scale(VAS), Cobb angle, anterior vertebral height were recorded before operation, 1 day after operation and 1 year after operation. Oswestry Disability Index(ODI) was recorded before operation, 1 month after operation and 1 year after operation. And bone cement leakage rate was compared between two groups after operation. RESULTS: All the patient were followed up for more than 1 year. In vesselplasty group, VAS score was 1.20±0.41, ODI was(13.50±3.10)%, Cobb angle was(17.20±3.12)° and anterior vertebral height was(20.20±1.35) mm at 1 year after operation. In PKP group, VAS score was 1.15±0.40, ODI was (13.20±3.00)%, Cobb angle was (17.10±3.19)° and anterior vertebral height was (20.10±1.37) mm at 1 year after operation. These index was significantly better than pre-operation through intra-group comparison(P<0.05), and there was no statistically difference between the two groups(P>0.05). There were 20 cases (20 vertebrae) in vesselplasty group, of which 1 case had bone cement leakage at the upper endplate, with a leakage rate of 5%(1/20). In PKP group, there were 20 cases (20 vertebrae), 3 cases of upward endplate leakage(3/7), 1 case of downward endplate leakage(1/7), 1 case of leakage to the front of the vertebral body(1/7), 2 cases of leakage to the side of the vertebral body(2/7), with a leakage rate of 35% (7/20). The difference between two groups was statistically significant(P<0.05). CONCLUSION Vesselplasty in the treatment of Kümmell disease can better reduce leakage rate of bone cement and reduce complications.
Bone Cements ; Female ; Fractures, Compression/surgery* ; Humans ; Kyphoplasty/methods* ; Male ; Osteoporotic Fractures/surgery* ; Retrospective Studies ; Spinal Fractures/surgery* ; Spondylosis ; Treatment Outcome ; Vertebroplasty