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Traumatic intracranial hematoma progresses rapidly and may cause quick increase of intracranial pressure and even brain hernia, ultimately leading to coma or death. Therefore, traumatic intracranial hematoma needs prompt treatment, but the prerequisite of treatment is early examination and diagnosis. Due to the limited transportation and other reasons, the existing large-scale detection devices such as CT and MRI cannot be deployed on the rescue site or during patient transportation. Instead, the portable diagnosis devices have the characteristics of miniaturization and high flexibility, which is conducive to promoting early detection, assisting diagnosis and further guiding the formulation of treatment plans. At present, more and more attention has been paid to the portable diagnosis devices in the diagnosis of intracranial hematoma. The authors summarized the conventional diagnosis methods and application of portable diagnosis devices for traumatic intracranial hematoma, aiming to provide a reference for the diagnosis of traumatic intracranial hematoma.
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The condition of patients with severe traumatic brain injury (sTBI) complicated by corona virus 2019 disease (COVID-19) is complex. sTBI can significantly increase the probability of COVID-19 developing into severe or critical stage, while COVID-19 can also increase the surgical risk of sTBI and the severity of postoperative lung lesions. There are many contradictions in the treatment process, which brings difficulties to the clinical treatment of such patients. Up to now, there are few clinical studies and therapeutic norms relevant to sTBI complicated by COVID-19. In order to standardize the clinical treatment of such patients, Critical Care Medicine Branch of China International Exchange and Promotive Association for Medical and Healthcare and Editorial Board of Chinese Journal of Trauma organized relevant experts to formulate the Chinese expert consensus on clinical treatment of adult patients with severe traumatic brain injury complicated by corona virus infection 2019 ( version 2023) based on the joint prevention and control mechanism scheme of the State Council and domestic and foreign literatures on sTBI and COVID-19 in the past 3 years of the international epidemic. Fifteen recommendations focused on emergency treatment, emergency surgery and comprehensive management were put forward to provide a guidance for the diagnosis and treatment of sTBI complicated by COVID-19.
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To explore the role of forkhead box protein O1 (FOXO1) in the progression of glioblastoma multiforme (GBM) and related drug resistance, we deciphered the roles of FOXO1 and miR-506 in proliferation, apoptosis, migration, invasion, autophagy, and temozolomide (TMZ) sensitivity in the U251 cell line using in vitro and in vivo experiments. Cell viability was tested by a cell counting kit-8 (CCK8) kit; migration and invasion were checked by the scratching assay; apoptosis was evaluated by terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining and flow cytometry. The construction of plasmids and dual-luciferase reporter experiment were carried out to find the interaction site between FOXO1 and miR-506. Immunohistochemistry was done to check the protein level in tumors after the in vivo experiment. We found that the FOXO1-miR-506 axis suppresses GBM cell invasion and migration and promotes GBM chemosensitivity to TMZ, which was mediated by autophagy. FOXO1 upregulates miR-506 by binding to its promoter to enhance transcriptional activation. MiR-506 could downregulate E26 transformation-specific 1 (ETS1) expression by targeting its 3'-untranslated region (UTR). Interestingly, ETS1 promoted FOXO1 translocation from the nucleus to the cytosol and further suppressed the FOXO1-miR-506 axis in GBM cells. Consistently, both miR-506 inhibition and ETS1 overexpression could rescue FOXO1 overactivation-mediated TMZ chemosensitivity in mouse models. Our study demonstrated a negative feedback loop of FOXO1/miR-506/ETS1/FOXO1 in GBM in regulating invasiveness and chemosensitivity. Thus, the above axis might be a promising therapeutic target for GBM.
Assuntos
Animais , Camundongos , Humanos , Neoplasias Encefálicas/genética , Linhagem Celular Tumoral , Proliferação de Células , Resistencia a Medicamentos Antineoplásicos , Retroalimentação , Regulação Neoplásica da Expressão Gênica , Glioblastoma/metabolismo , MicroRNAs/metabolismo , Temozolomida/uso terapêutico , Proteína Forkhead Box O1/metabolismoRESUMO
Glioma is a highly lethal malignancy and multiple challenges remain for it in the genomic study and clinical treatment.Next-generation sequencing (NGS) holds many advantages,and NGS can comprehensively analyze the whole genome,exome,transcriptome and epigenome to deepen the understanding of tumor genomics;and now,it has been successfully applied in the clinical study of some tumors,especially in personalized treatment for these tumors.At present,NGS has also been a hot in glioma research to clarify the pathogenesis of glioma,so as to draw up a personalized treatment method to benefit the patients.
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Objective To investigate standard diagnosis and treatment of cerebrospinal fluid (CSF) leakage to improve the prognosis of the patients. Methods A retrospective study was done on 75 patients with CSF leakage from January 2004 to March 2007 in our hospital. There were 51 patients with rhinorrhea, nine with otorrhea and 15 with wound/incision leakage. Of all, 39 patients had traumatic leakage, 32 postoperative leakage and four spontaneous leakage. In the study, 23 patients were cured by position testing and drug therapy and 16 by cerebrospinal fluid drainage and/or wound debridement but 36 were treated with surgeries including craniotomy repair in 17, extracranial repair in 17 and CSF shunt in five (three received CSF shunt after repair). Results Of all, 64 patients were cured, 10 gained im-provement but one died. Conclusion Standard diagnosis and treatment of CSF leakage helps improve cure rate and reduce complications.
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Objective:To understand the molecular pat hophysiology of hepatocellular carcinoma and pancreatic cancer.Methods: We studied novel gene expression by cDNA microarray method. The PCR pro ducts of 4 096 genes and 12 800 gene were spotted onto a kind of chemical-mater ial-coated-glass slide in array. Both the mRNAs from 5 cases of hepatocellular carcinoma and 3 cases of pancreatic cancer were reversely transcribed to cDNAs with the incorporation of fluorescent-labeled dUTP to prepare the hybridization probes. After hybridization, BioDoor4096 and BioDoor12800 cDNA microarray were scanned for the fluorescent intensity. Tumor invasion-related gene expression w as screened through the analysis of difference in gene expression profile.Results:Among 4 096 and 12 800 target genes, there were 15 genes who se expression level differed from normal and carcinoma tissues. Therefore, they might be associated with metastasis.Conclusion:Further analysis of these differentially expressed metastasis-associated genes will be helpful for understanding the molecular mechanism of malignant carcinoma.
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Objective:To investigate the role of pleiotrophin (PTN) gene in carcino genesis using cDNA microarray and in situ hybridization. Methods:The expression of PTN gene in 5 cases of glioma, 10 laryngeal squamous cell carcinoma, 6 cases of hepatocarcinoma, and normal controls were detected by BioDoor 4096 type cDNA microarray and in situ hybridization. Results: The expression of PTN gene in carcinoma samples were significantly higher than in normal controls by cDNA microarray, the results was the same as by in situ hybridization. Conclusion: cDNA microarray is an effective technique in analysis of functional study of associated genes in carcinoma. High expression of PTN gene might be correlated with mechanism of multiple carcinoma. [
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Objective: To screen for the differentially expressed genes in laryngeal squamous cell carcinoma and normal laryngeal tissue using cDNA microarray. Methods: The PCR products of 4 096 genes were spotted on a chemical material coated glass plates in array. The DNAs were then fixed on the glass plate by a serial of treatments. The total RNAs were isolated from the tissues, and then were purified to mRNAs by Oligotex. Both the mRNAs from the laryngeal squamous cell carcinoma and normal tissue were reversely transcribed to cDNAs with the incorporations of fluorescent dUTP, for preparing the hybridization probes. The mixed probes were then hybridized to the cDNA microarray. After high stringent washing, the cDNA microarray was scanned for the fluorescent signals and showed the differences between 2 tissues. Results: Among the 4 096 target genes, there were 36(0.88%) genes whose expression levels differed between the carcinoma and normal tissues in all 4 cases. Bioinformatical analysis of those genes had been performed. Conclusion: DNA microarray technology is an effective technique in screening for differentially expressed genes between 2 different kinds of tissue. Further analysis of the obtained genes will help to understand the molecular mechanism of malignant carcinoma. [