Δευτέρα 27 Δεκεμβρίου 2021

Breathy Dysphonia, Not Just a Pain in the Neck

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Ear Nose Throat J. 2021 Dec 27:1455613211069919. doi: 10.1177/01455613211069919. Online ahead of print.

ABSTRACT

We describe a rare occurrence of unilateral vocal fold paralysis associated with a cervical osteophyte abutting the course of the recurrent laryngeal nerve. Trans-nasal laryngoscopy is vital in diagnosing vocal fold paralysis, but often does not provide insight into etiology. This case highlights the importance of radiographic imaging in newly diagnosed vocal fold paralysis, and underscores the principle that a diagnosis is not idiopathic until all sources have been ruled out.

PMID:34958270 | DOI:10.1177/01455613211069919

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Κυριακή 26 Δεκεμβρίου 2021

Prevalence and Treatment Outcomes of Marine-Lenhart Syndrome in Japan

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Eur Thyroid J. 2021 Nov;10(6):461-467. doi: 10.1159/000510312. Epub 2020 Sep 30.

ABSTRACT

INTRODUCTION: Marine-Lenhart syndrome (MLS) is now understood to be a combination of Graves' disease and autonomously functioning thyroid nodule(s) (AFTNs). The prevalence of the syndrome and suitable treatments for those living in iodine-sufficient areas are uncertain.

OBJECTIVES: We aimed to investigate the prevalence, treatment, and prognosis of MLS in Japan, an iodine-sufficient area.

METHODS: This study involved patients who visited our hospital between February 2005 and August 2019. Among patients with both thyrotoxicosis and thyroid nodule(s) larger than 10 mm, MLS and isolated AFTNs were diagnosed based on serum thyroid-stimulating hormone receptor antibody levels and scintigraphy using radioiodine or technetium-99m and thyroid uptake.

RESULTS: Twenty-two patients were found to have MLS, compared to 372 with isolated AFTNs and 8,343 with Graves' disease, during the period. Therefore, the rate of MLS cases was 0.26% among all patients with Graves' disease (22/8,343). Treatments and outcomes were assessed for cases of MLS (n = 18) and isolated AFTNs (n = 269). Antithyroid drugs (ATDs) were withdrawn in 27.8% of cases in the MLS group and 10.3% in the isolated AFTN group. There was no significant difference in the clinical outcome after ATD withdrawal between the 2 groups. However, the rate of hypothyroidism after radioactive iodine (R AI) administration was significantly higher in the MLS group than in the isolated AFTN group (42.9 vs. 9.0%, p = 0.005) despite similar doses of RAI.

CONCLUSIONS: The prevalence of MLS among patients with Graves' disease was 0.26% in Japan. RAI therapy induces hypothyroidism more frequently than in those with AFTNs probably because RAI is taken up in the surrounding Graves' tissues.

PMID:34950599 | PMC:PMC8647058 | DOI:10.1159/000510312

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Regulation of nuclear medicine services: Perception of the problems and challenges in Colombia for the approach to cancer

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Biomedica. 2021 Dec 15;41(4):692-705. doi: 10.7705/biomedica.6123.

ABSTRACT

Introduction: Colombia has modified the nuclear medicine norms that impact the administration of radioactive iodine therapy in the treatment of thyroid cancer. Objective: To identify the areas of agreement regarding the issue, as well as the current and emergent requirements associated with the normative for the operation of nuclear medicine services that have an impact on the care of patients with thyroid cancer in Colombia. Materials and methods: We conducted a two-round Delphi study for each expert, clinical, and regulatory group. The first round explored views on the implications of the regulations that apply to nuclear medicine. The second round rated the statements from the first round by their relevance. Results: The issues regarding nuclear medicine services were related to the normative clarity and the lack of synergy and coherence among inspection, surveillance, and control bodies. The demands on the waste management system require a high economic investment that can influence the service offer and have an impact on the integral control of thyroid cancer. Unification of the auditors' criteria, delimitation of the acting agent functions, technical assistance to the services to comply with the normative, and the oversight of the inspection, surveillance, and control bodies by the regulatory entities are among the current and future needs. Conclusions: Our findings suggest th at nuclear medicine services are going through a time of multiple institutional, regulatory, and economic challenges that put at risk the development and maintenance of nuclear medicine in cancer care.

PMID:34936254 | DOI:10.7705/biomedica.6123

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A Systematic Review of Robotic Surgery: From Supervised Paradigms To Fully Autonomous Robotic Approaches

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Abstract

Background

From traditional open surgery to laparoscopic surgery and robot-assisted surgery (RAS), advances in robotics, machine learning, and imaging are pushing the surgical approach to-wards better clinical outcomes. Pre-clinical and clinical evidence suggests that automation may standardise techniques, increase efficiency, and reduce clinical complications.

Methods

A PRISMA-guided search was conducted across PubMed and OVID.

Results

Of the 89 screened articles, 51 met the inclusion criteria, with 10 included in the final review. Automatic data segmentation, trajectory planning, intra-operative registration, trajectory drilling, and soft tissue robotic surgery were discussed.

Conclusion

Although automated surgical systems remain conceptual, several research groups have developed supervised autonomous robotic surgical systems with increasing consideration for ethico-legal issues for automation. Automation paves the way for precision surgery and improved safety and opens new possibilities for deploying more robust artificial intelligence models, better imaging modalities and robotics to improve clinical outcomes.

This article is protected by copyright. All rights reserved.

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The programmed gene expression change in mouse skin after ultraviolet radiation damage

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ABSTRACT

Ultraviolet (UV) radiation is a major cause of skin damage and carcinogenesis. Here we systematically analyze the acute gene expression change in skin in vivo after UV exposure, aiming to establish the common C57BL/6 mouse strain as a convenient model for future pathological research and drug discovery. The back fur of C57BL/6 mice was depilated, and a mixed UV light source was used to irradiate the skin. Full thickness skin samples were collected at 0, 0.5h, 2h, 6h, 12h, and 24h. Total RNAs were extracted and subjected to RNA sequencing analysis. We found that the gene expression change in mouse skin is highly similar to previous reports in human skin. These include down-regulation of differentiation-related genes and extracellular matrix genes, and up-regulation of cytokine/chemokine genes. An early wave of activator protein 1 (AP-1) expression is induced, whereas activation of the p53 pathway is not significant. The impact of the AP-1 transcription factors and the antioxidant t ea polyphenols is discussed. The analysis of acute gene expression change in skin after UV irradiation provides a starting point to investigate how the skin responds to genotoxic stress.

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Τετάρτη 22 Δεκεμβρίου 2021

The Nonrecurrent Laryngeal Nerve Without Abnormal Subclavian Artery: Report of Two Cases and Review of the Literature

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Ear Nose Throat J. 2021 Dec 22:1455613211056547. doi: 10.1177/01455613211056547. Online ahead of print.

ABSTRACT

As a variant of recurrent inferior laryngeal nerve (RILN), the nonrecurrent inferior laryngeal nerve (NRILN) is closely related to the occurrence of abnormal subclavian artery (ASA). The nonrecurrent inferior laryngeal nerve has been found in patients without arterial abnormalities, which is seen in the coexistence of NRILN and RILN, but it is easily confused with sympathetic-inferior laryngeal anastomosis branch (SILAB). We encountered 2 right NRILN patients without ASA during thyroid surgery. This article summarizes the characteristics of these cases and proposes methods to distinguish the coexistence of NRILN and RILN from SILAB. So far, 11 articles have reported 16 cases of NRILN without arterial abnormalities. In patients without artery abnormality, the vagus nerve could send out a descending branch NRILN at the bifurcation of the carotid artery and enter the larynx after anastomosis with RILN. Adequate dissection of the carotid sheath may avoid confusion with SILAB, and neural monitoring is also expected to provide a reference for the identification.

PMID:34935547 | DOI:10.1177/01455613211056547

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Τρίτη 21 Δεκεμβρίου 2021

Paracrine mechanisms of endothelial progenitor cells in vascular repair

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Via histochem

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Acta Histochem. 2021 Dec 17;124(1):151833. doi: 10.1016/j.acthis.2021.151833. Online ahead of print.

ABSTRACT

Endothelial progenitor cells (EPCs) play an important role in repairing damaged blood vessels and promoting neovascularization. However, the specific mechanism of EPCs promoting vascular repair is still unclear. Currently, there are two different views on the repair of damaged vessels by EPCs, one is that EPCs can directly differentiate into endothelial cells (ECs) a nd integrate into injured vessels, the other is that EPCs act on cells and blood vessels by releasing paracrine substances. But more evidence now supports the latter. Therefore, the paracrine mechanisms of EPCs are worth further study. This review describes the substances secreted by EPCs, some applications based on paracrine effects of EPCs, and the studies of paracrine mechanisms in cardiovascular diseases--all of these are to support the view that EPCs repair blood vessels through paracrine effects rather than integrating directly into damaged vessels.

PMID:34929523 | DOI:10.1016/j.acthis.2021.151833

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