Glioblastoma, WHO grade IV astrocytoma, is the most aggressive type of brain tumors. These cancerous cells have a rapid growth rate, tendency to penetrate vital brain structures, molecular heterogeneity, etc. and this cancer is associated with a poor prognosis and low survival rate. Due to the resistance of glioblastoma cells to conventional therapeutic modalities (such as radiation therapy and chemotherapy) as well as the adverse effects of these modalities, the researchers have attempted to discover an appropriate alternative or adjuvant treatment for glioblastoma. Resveratrol, as an herbal and natural polyphenolic compound, has anti-tumoral property and has shown to be effective in GBM treatment. Resveratrol exerts its anti-tumoral effect through various mechanisms such as regulation of cell cycle progression and cell proliferation, autophagy, oxidant system, apoptosis pathways, and so on. Resveratrol in combination with radiation therapy and chemotherapy has also been used. In the present study, we summarized the current findings on therapeutic potentials of resveratrol in glioblastoma radiotherapy and chemotherapy.
What is known and objective
Sepsis is a life‐threatening organ dysfunction associated with a high rate of morbidity and mortality. Appropriate antibiotic therapy remains the cornerstone of sepsis and septic shock management.
Comment
Although the early initiation of antimicrobial agents in the treatment of sepsis is widely acknowledged, the selection and adjustment to optimal dosage can be equally important. Since significant pathophysiological changes in the critically ill patients lead to altered pharmacokinetics of antibiotics, early consideration of pharmacokinetic/pharmacodynamic (PK/PD) properties is necessary for optimal antibiotic dosing in sepsis and should be integrated in practice.
What is new and conclusion
Where possible, an individualized antibiotic dosing approach through the application of therapeutic drug monitoring (TDM) service should replace the conventional dosing in critically ill patients with sepsis. Finally, antimicrobial stewardship can help improve clinical outcomes.
Stanniocalcin 2 (STC2) is a novel member of the Stanniocalcin family, the function of which remains unclear. Its expression is clinically significant in several cancers. The aim of this study was to evaluate the clinical value of measuring expression levels of STC2 in colorectal cancer (CRC) patients. A total of 47 tumor and matched tumor-free margin samples were obtained during surgery. The STC2 mRNA expression level in tumor and marginal tissue was examined by real-time quantitative PCR. STC2 mRNA expression levels were higher in tumor tissues than the control. (r=0.36, p≤0.02). mRNA expression level of STC2 was significantly associated with tumor size (p≤0.05) and histologic grade (p≤0.05). Our study demonstrated that STC2 was significantly expressed in CRC patients, relative to the control. STC2 can therefore be used as a biomarker to differentiate between tumor borders and margins. Analysis of STC2 gene expression during surgery could be useful in reducing surgical error in tumor removal and increasing overall success of surgery with improved tumor clearance. However, in some cases such as where the tumor is end-stage, the expression of such a biomarker may not be clinically beneficial to record. The consideration of marginal samples as a control group can help reduce the effect of confounding factors such as racial and individual differences.
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