Formaldehyde-hardened albumin as a non-penetrating embedding matrix for frozen and vibratome sectioning

xlomafota13 shared this article with you from Inoreader Formaldehyde-hardened albumin as a non-penetrating embedding matrix for frozen and vibratome sectioning Via histochem Acta Histochem. 2021 Dec 31;124(1):151838. doi: 10.1016/j.acthis.2021.151838. Online ahead of print. ABSTRACT In this paper, we describe a protocol for a non-penetrating embedding matrix that can be used for frozen or vibratome sectioning of various formaldehyde-fixed tissue specimens. In our experiments, we wanted to prepare thin frozen sections from miniature specimens for fluorescent staining. As we could not achieve satisfactory results with any of the previously publish ed methods, we have tried to modify the existing protocols, and systematically evaluated the effect of these modifications on the properties of the embedding matrix. The resulting protocol is simple, the matrix gets firmly attached to the tissues, does not cause autofluorescence and enables preparing extremely thin frozen sections. The matrix can be used for 1, embedding miniature specimens from problematic tissues to enable cutting very thin frozen sections, 2, grouping multiple specimens into one large block for simultaneous processing, and 3, dispersing single cells and preparing cell blocks for frozen sectioning. PMID:34979375 | DOI:10.1016/j.acthis.2021.151838 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Taxane/gemcitabine-containing chemotherapy plus locoregional IMRT for patients with de novo metastatic nasopharyngeal carcinoma: the treatment outcomes and prognostic factors analysis

xlomafota13 shared this article with you from Inoreader Taxane/gemcitabine-containing chemotherapy plus locoregional IMRT for patients with de novo metastatic nasopharyngeal carcinoma: the treatment outcomes and prognostic factors analysis Via http://link.springer.com/journal/405,European archives of oto-rhino-laryngology,The European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino Eur Arch Otorhinolaryngol. 2022 Jan 4. doi: 10.1007/s00405-021-07192-8. Online ahead of print. ABSTRACT PURPOSE: To evaluate treatment outcomes of de novo metastatic nasopharyngeal carcinoma (mNPC) patients receiving taxane/gemcitabine-containing chemotherapy followed by locoregional intensity-modulated radiotherapy (IMRT) and analyze potential prognostic factors. METHODS: A total of 118 patients between March 2008 and November 2018 were retrospectively analyzed. All the patients were treated with taxane/gemcitabine-containing systemic chemotherapy followed by definitive locoregional IMRT. Potential prognostic factors including baseline absolute lymphocyte count (ALC) and the subdivision of metastasis were analyzed. RESULTS: The median follow-up time for the whole group was 31.5 months (range 5-138 months). Of the 118 patients, 9 (7.6%) patients experienced local regional failure and 60 (50.8%) patients had progression of d istant metastasis. At the time of the last follow-up, 61 (51.7%) patients were dead. The 5-year actuarial progression free survival (PFS), overall survival (OS),distant metastasis relapse free survival (DMFS) and local regional recurrence free survival (LRFS) were 34.2%, 44%, 41.1% and 82.6%, respectively. Baseline lymphocyte count ≥ 1600/μl prior to the treatment conferred better locoregional control (5y-LRFS 96% vs. 64.7%, p < 0.001) and distant metastasis control (5y-MFS 50.4% vs. 32.4%, p = 0.023). The multivariate analysis showed that high lymphocyte count was the most relevant predictor of superior PFS (HR = 0.236, p < 0.001) and OS (HR = 0.518, p = 0.04). M subdivision was found as another independent prognostic factor for OS but not for PFS. CONCLUSION: Taxane/gemcitabine-containing chemotherapy combined with IMRT represents an effective treatment modality for mNPC. Baseline ALC is an independent significant prognostic factor for PFS and OS. PMID:34981158 | DOI:10.1007/s00405-021-07192-8 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Pain at the Cochlear Implant Site Requiring Device Removal in Pediatric Patients

xlomafota13 shared this article with you from Inoreader Pain at the Cochlear Implant Site Requiring Device Removal in Pediatric Patients Via The Laryngoscope Objectives Idiopathic pain at the cochlear implant (CI) site outside of the immediate postoperative period is an uncommon occurrence but may necessitate device explantation. Our objective was to describe the clinical course for pediatric patients with CI site pain who ultimately required device explantation. Study Design Retrospective chart review. Methods We performed a retrospective database review of CIs performed at a tertiary referral center for pediatric cochlear implantation. We specifically evaluated pediatric patients who presented with pain at or near the CI device site and ultimately required explantation. Results Fifteen patients (16 CIs) had pain at or near the CI site requiring device explantation. Cultures taken during site exploration or device explantation identified bacteria in 86% and 81% of procedures, respectively. Propionibacterium acnes and Staphylococcus non-aureus were the most commonly identified organisms. Conclusions The majority of patients with idiopathic pain in this cohort ultimately requiring CI explantation had chronic bacterial colonization. Level of Evidence Level 4 (Case series) Laryngoscope, 2022 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Prevalence and associated factors of aspiration and severe dysphagia in asymptomatic patients in the late period after open partial laryngectomy: a videofluoroscopic evaluation

xlomafota13 shared this article with you from Inoreader Prevalence and associated factors of aspiration and severe dysphagia in asymptomatic patients in the late period after open partial laryngectomy: a videofluoroscopic evaluation Via http://link.springer.com/journal/405,European archives of oto-rhino-laryngology,The European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino Eur Arch Otorhinolaryngol. 2022 Jan 4. doi: 10.1007/s00405-021-07231-4. Online ahead of print. ABSTRACT PURPOSE: This study aimed to evaluate late and asymptomatic patients after open partial horizontal laryngectomy (OPHL), investigating the clinical-surgical and socio-demographic factors associated with aspiration and severe dysphagia. METHODS: One-thousand videofluoroscopic swallowing studies were performed in 100 asymptomatic patients in the late period after OPHL(median 6.5 years). Aspiration and severe dysphagia were, respectively, assessed by the Penetration-Aspiration scale (PAS) and by the Dynamic Imaging Grade of Swallowing Toxicity (DIGEST) classification. Associated factors were investigated by multivariate logistic regressions. RESULTS: 34% (95% CI 24.3-47.6%) of patients presented aspiration and 23% (95% CI 15.3-34.6%) had severe or life-threatening dysphagia (DIGEST grades 3-4). On logistic regression, the pre sence of aspiration was associated with lower preoperative serum albumin (odds ratio [OR]: 0.22; 95% CI 0.07-0.64; p = 0.005, for each 1 g/dL increment); a greater weight loss in early postoperative period (OR: 1.19, 95% CI 1.05-1.35; p = 0.008, for each 1 kg loss); older age at surgery (OR: 1.08; 95% CI 1.01-1.17, for each 1-year older); and with the presence of diabetes (OR: 5.16; 95% CI 1.09-27.47; p = 0.039). CONCLUSION: Deglutition abnormalities are frequent in asymptomatic patients later after OPHL. Older patients, with lower preoperative serum albumin levels, with greater postoperative weight loss, and with diabetes compose the clinical profile at risk for having worse swallowing function in the late period after OPHL. PMID:34982204 | DOI:10.1007/s00405-021-07231-4 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.