Endoscopic trans‐lateral oropharyngeal wall approach to the petrous apex and the petroclival region

alexandrossfakianakis shared this article with you from Inoreader Endoscopic trans‐lateral oropharyngeal wall approach to the petrous apex and the petroclival region via Head & Neck Abstract Background A trans-lateral oropharyngeal wall approach (TLOWA) to the petrous apex has not been previously defined. This study aims to assess the feasibility of a TLOWA for surgical access to the petrous apex and the petroclival region. Methods An endoscopic TLOWA for exposure of the petrous apex and petroclival region was performed on five cadaveric specimens (10 sides). Associated anatomical landmarks were defined, and the strategies for maximal exposure of the internal carotid artery (ICA) were explored. Results Via a TLOWA, the parapharyngeal ICA was widely exposed in all 10 sides. Following transection of the Eustachian tube, the inferior petrous apex and petroclival region could be sufficiently exposed. After drilling the anteroinferior bony canal, the horizontal petrous ICA, foramen lacerum, and the paraclival ICA could be adequately revealed. Conclusion The TLOWA may provide an alternative corridor for access to the petrous apex and the petroclival region. The parapharyngeal, petrous, lower paraclival ICAs, and the foramen lacerum could be adequately exposed via the TLOWA. View on Web

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DNA methylation subclasses predict the benefit from gross total tumor resection in IDH-wildtype glioblastoma patients

alexandrossfakianakis shared this article with you from Inoreader DNA methylation subclasses predict the benefit from gross total tumor resection in IDH-wildtype glioblastoma patients via Neuro-Oncology Advance Access Abstract Background DNA methylation-based tumor classification allows an enhanced distinction into subgroups of glioblastoma. However, the clinical benefit of DNA methylation-based stratification of glioblastomas remains inconclusive. Methods Multicentric cohort study including 430 patients with newly diagnosed glioblastoma subjected to global DNA methylation profiling. Outcome measures included overall survival (OS), progression-free survival (PFS), prognostic relevance of EOR and MGMT promoter methylation status as well as surgical benefit for recurrent glioblastoma. Results 345 patients (80.2%) fulfilled the inclusion criteria. DNA methylation subclasses RTK I, RTK II, and mesenchymal (MES) revealed no significant survival differences (p = 0.06). 305 Patients receiving combined adjuvant therapy (RTK I: Ref. ; RTK II: HR 0.9 [95% CI, 0.64-1.28]; p = 0.56; MES: 0.69 [0.47-1.02]; p = 0.06). RTK I (GTR/near GTR: Ref.; PR: HR 2.87 [95% CI, 1.36-6.08]; p < 0.01) or RTK II (GTR/near GTR: Ref.; PR: HR 5.09 [95% CI, 2.80-9.26]; p < 0.01) tumors who underwent gross-total resection (GTR) or near GTR had a longer OS and PFS than partially resected patients. The MES subclass showed no survival benefit for a maximized EOR (GTR/near GTR: Ref.; PR: HR 1.45 [95% CI, 0.68-3.09]; p = 0.33). Therapy response-predictive value of MGMT promoter methylation was evident for RTK I (HR 0.37 [95% CI, 0.19-0.71]; p < 0.01) and RTK II (HR 0.56 [95% CI, 0.34-0.91]; p = 0.02) but not the MES subclass (HR 0.52 [95% CI, 0.27-1.02]; p = 0.06). For local recurrence (n=112), re-resection conveyed a progression-to-overall survival (POS) benefit (p < 0.01), which was evident in RTK I (p = 0.03) and RTK II (p < 0.01) tumors, but not in MES tumors (p = 0.33). Conclusion We demonstrate a survival benefit from maximized EOR for newly diagnosed and recurrent glioblastomas of the RTK I and RTK II but not the MES subclass. Hence, it needs to be debated whether the MES subclass should be treated with maximal surgical resection, especially when located in eloquent areas and at tim e of recurrence. View on Web

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Factors associated with high alanine aminotransferase (ALT) and cirrhosis in people living with HIV on combination antiretroviral treatment (cART) in the Asia‐Pacific

alexandrossfakianakis shared this article with you from Inoreader Factors associated with high alanine aminotransferase (ALT) and cirrhosis in people living with HIV on combination antiretroviral treatment (cART) in the Asia‐Pacific via Journal of Medical Virology Abstract Introduction: Liver disease is a growing burden among PLHIV in resource-limited settings. As an indicator of liver disease, risk factors of high alanine aminotransferase (ALT) and cirrhosis were assessed among PLHIV in the TREAT Asia HIV Observational Database (TAHOD). Methods: Patients on cART with a pre-cART ALT measurement and at least one follow-up ALT measurement were included. Factors associated with high ALT (ALT levels >5 times its upper limit of normal) were analysed using repeated measure logistic regression over a ten-year follow-up period. Liver cirrhosis was defined as having an APRI score >1.5, FIB-4 score >3.25, or a clinical diagnosis of cirrhosis. Cox regression analysis stratified by site was used to analyse factors associated with cirrhosis among those in follow-up after 2015. Results: Of 5182 patients, 101 patients (1.9%) had high ALT levels with HCV-antibody positive (OR 4.98, 95%CI 2.82-8.77, p <0.001) an d ever high alcohol consumption (OR 2.33, 95% CI 1.00-5.46, p=0.050) as likely factors. Among 6318 PLHIV in the liver cirrhosis analysis, 151 (2%) developed cirrhosis (incidence rate= 0.82 per 100 person-years). Those HCV-antibody positive (HR 5.54, 95% CI 3.75-8.18, p<0.001) and had high alcohol consumption (HR 2.06, 95%CI 1.23-3.45, p=0.006) were associated with liver cirrhosis. Conclusion: HCV-antibody positive and high alcohol consumption are factors associated with high ALT. With raised ALT levels as a known factor associated with liver cirrhosis, greater efforts are required in managing ALT levels and reduce the risk of developing liver cirrhosis among those positive for HCV-antibody and those who consume alcohol. This article is protected by copyright. All rights reserved. View on Web

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Interferon‐gamma inducible protein 16 and type I interferon receptors expression in experimental apical periodontitis induced in wild type mice

alexandrossfakianakis shared this article with you from Inoreader Interferon‐gamma inducible protein 16 and type I interferon receptors expression in experimental apical periodontitis induced in wild type mice via International Endodontic Journal Abstract Aim The aim of this study was to evaluate the IFI16 and IFN-α/β receptors expression during the genesis and development of experimental apical periodontitis (AP) in mice teeth. Methodology AP was induced in the lower first molars of 40 C57BL/6 mice. They were divided according to the experimental periods 2, 7, 14, 21 and 42 days (n=8 per group). Five animals were used as a control group (without AP). Specimens were submitted to histological processing for description of the inflammatory process, immunostaining for the presence/absence and localization of IFI16 and IFN-α/β receptors (qualitative and semi-quantitative analysis), and tartrate-resistant acid phosphatase (TRAP) histoenzimology. Results The results showed a gradual development of AP over the experimental times. The expression of IFI16 was noticeably more exacerbated in the experimental early period (day 2) while the lowest expression was observed in the control group (p=0.02). For IFN-α/β receptors, a higher intensity staining was observed 42 days after AP induction, that was statistically different from the control group (p=0.02). Also, the number of TRAP positive cells was higher on the later periods (days 21 and 42) (p<0.001). Conclusion IFI16 protein expression was highest during the early periods after apical periodontitis induction in mice teeth, whilst IFN-α/β receptors expression was highest after apical periodontitis became established. View on Web

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Protective Effects of Cannabis sativa on chemotherapy‐induced nausea

alexandrossfakianakis shared this article with you from Inoreader Protective Effects of Cannabis sativa on chemotherapy‐induced nausea in a rat: Involvement of CB1 receptors via Fundamental & Clinical Pharmacology Abstract Cyclophosphamide is an anticancer and immunosuppressive agent used in the treatment of various malignancies but causing gastrointestinal distress. Cannabis sativa (C. sativa) and its derivatives have been used for the treatment of human gastrointestinal disorders. A purpose of this study was to investigate the effect of C. sativa on nausea induced by cyclophosphamide in rats. The rats were divided into four groups (8 animals per group): Group 1: Normal control (saline i.p). Group 2: rats received cyclophosphamide (200 mg/kg i.p) 3 consecutive days. Group 3 and 4: Rats received cyclophosphamide (200 mg/kg ip) across days 1 – 7 and C. sativa (20 and 40 mg/kg sc) was administered on cyclophosphamide days 4 – 7. We examined intake of kaolin, normal food and changes in body weight, as an indicator of the emetic stimulus. Oxidative stress markers, antioxidant enzymes status, serotonin (5HT), dopamine, noradrenaline and CB1R levels were evaluated in the intestina l homogenate. Moreover, histopathological study was performed. Results showed that C. sativa ameliorates cyclophosphamide-induced emesis by increasing in body weight and normal diet intake with a decrease in kaolin diet intake after 7 days. Moreover, C. sativa significantly decreases (serotonin) 5HT, dopamine and noradrenaline, as well as, decreasing oxidative stress and inflammation. Administration of C. sativa significantly increased the expression of CB1R in intestinal homogenate. Treatment with C. sativa, also, improved the histological feature of an intestinal tissue. These results suggested that C. sativa possess antiemetic, antioxidant and anti-inflammatory effects in chemotherapy-induced nausea in rats by activating CB1R. View on Web

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