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Τετάρτη 10 Νοεμβρίου 2021

Overview of sialylation status in human nervous and skeletal muscle tissues during aging

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Via histochem

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Acta Histochem. 2021 Nov 6;123(8):151813. doi: 10.1016/j.acthis.2021.151813. Online ahead of print.

ABSTRACT

Sialic acids (Sias) are a large and heterogeneous family of electronegatively charged nine-carbon monosaccharides containing a carboxylic acid and are mostly found as terminal residues in glycans of glycoproteins and glycolipids such as gangliosides. They are linked to galactose or N-acetylgalactosamine via α2,3 or α2,6 linkage, or to other Sias via α2,8 or more ra rely α2,9 linkage, resulting in mono, oligo and polymeric forms. Given their characteristics, Sias play a crucial role in a multitude of human tissue biological processes in physiological and pathological conditions, ranging from development and growth to adult life until aging. Here, we review the sialylation status in human adult life focusing on the nervous and skeletal muscle tissues, which both display significant structural and functional changes during aging, strongly impacting on the whole human body and, therefore, on the quality of life. In particular, this review highlights the fundamental roles played by different types of glycoconjugates Sias in several cellular biological processes in the nervous and skeletal muscle tissues during adult life, also discussing how changes in Sia content during aging may contribute to the physiological decline of physical and nervous functions and to the development of age-related degenerative pathologies. Based on our current knowledge, further in-depth investigations could help to develop novel prophylactic strategies and therapeutic approaches that, by maintaining and/or restoring the correct sialylation status in the nervous and skeletal muscle tissues, could contribute to aging slowing and the prevention of age-related pathologies.

PMID:34753032 | DOI:10.1016/j.acthis.2021.151813

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Patient-reported outcomes measures used in facial vascularized composite allotransplantation: A systematic literature review

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J Plast Reconstr Aesthet Surg. 2021 Oct 2:S1748-6815(21)00441-1. doi: 10.1016/j.bjps.2021.09.002. Online ahead of print.

ABSTRACT

BACKGROUND: Facial vascularized composite allotransplantation (fVCA) is a life-enhancing procedure performed to improve quality of life (QOL). Patient-reported outcome measures (PROMs) are tools used to assess QOL from the patients' perspective, and are increasingly recognized as an important clinical metric to assess outcomes of treatment. A systematic literature review was performed to identify and appraise the content of PROMs used in fVCA.

METHODS: We searched PUBMED/Medline, CINAHL, Embase, PsychInfo, and Web of Science from their inception through to June 2020. Included studies used a PROM in candidates and recipients of fVCA of any gender or age. We excluded abstracts, reviews, editorials, and dissertations. Items from each PROM were extracted and coded, using top-level codes and subcodes, to de velop a preliminary conceptual framework of QOL concerns in fVCA, and to guide future PROM selection.

RESULTS: Title and abstract screening of 6089 publications resulted in 16 studies that met inclusion criteria. Review of the 16 studies identified 38 PROMs, none of which were developed for fVCA. Review of the coded content for each PROM identified six top-level codes (appearance, facial function, physical, psychological and social health, and experience of care) and 16 subcodes, making up the preliminary conceptual framework.

CONCLUSION: There are currently no PROMs designed to measure QOL concerns of fVCA candidates and recipients. Findings from this systematic review will be used to inform an interview guide for use in qualitative interviews to elicit and refine important concepts related to QOL in fVCA.

PMID:34753682 | DOI:10.1016/j.bjps.2021.09.002

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Medicolegal corner (spine): Contraindicated use of DuraSeal in anterior cervical spine led to quadriplegia

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Surg Neurol Int. 2021 Oct 19;12:532. doi: 10.25259/SNI_875_2021. eCollection 2021.

ABSTRACT

BACKGROUND: The package insert for DuraSeal (Integra LifeSciences, Princeton NJ) states it is Contraindicated for use in the anterior cervical spine (confined space): "Do not apply DuraSeal® hydrogel to confined bony structures where nerves are present since neural compression may result due to hydrogel swelling (…up to 12% of its size in any direction)." Further, it should not be used to treat massive unrepaired cerebrospinal fluid (CSF) leaks in any location; "…(it) is indicated as an adjunct to sutured dural repair during spine surgery to provide watertight closure," but it is not to be used "...for a gap greater than 2 mm…."

METHODS: A spinal surgeon interpreted a geriatric patient's MR as showing severe C3-C4 to C5-C6 anterior cord compression due to disc disease/spondylosis. However, he never reviewed the CT report/images that documented marked ossification of the posterior longitudinal ligament (OPLL) with multiple signs of dural penetrance.

RESULTS: The anterior C4, C5 corpectomy, and C3-C6 strut fusion/plating resulted in a massive, irreparable cerebrospinal fluid (CSF) leak. Despite the contraindications, the surgeon mistakenly applied DuraSeal which caused the patient's postoperative quadriplegia (i.e., as documented on the delayed postoperative MR scan). Following a secondary surgery consisting of a laminectomy/posterior fusion, the patient was still quadriplegic. Further, as he requested no postoperative MR scan and performed no subsequent corrective surgery (i.e., anterior removal of DuraSeal), the patient remained permanently quadriplegic.

CONCLUSION: DuraSeal is directly contraindicated for use in the anterior cervical spine, with/without a CSF leak. Here, utilizing DuraSeal for anterior cervical OPLL surgery resulted in permanent quadriplegia, and was below the standard of care.

PMID:34754582 | PMC:PMC8571335 | DOI:10.25259/SNI_875_2021

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A case study of phantosmia cured by antibiotic treatment of an intranasal Pseudomonas stutzeri infection

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Braz J Otorhinolaryngol. 2021 Oct 17:S1808-8694(21)00165-8. doi: 10.1016/j.bjorl.2021.08.006. Online ahead of print.

NO ABSTRACT

PMID:34756556 | DOI:10.1016/j.bjorl.2021.08.006

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Tobacco and alcohol consumption in women treated for breast cancer in a department of surgical oncology: Frequent behaviours to consider

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Bull Cancer. 2021 Oct 28:S0007-4551(21)00364-7. doi: 10.1016/j.bulcan.2021.07.005. Online ahead of print.

ABSTRACT

INTRODUCTION: Tobacco and alcohol represent the two most important risk factors increasing cancer incidence and mortality, particularly among women with breast cancer. However, few researches have focused on the consumption of psychoactive substances in women treated for breast cancer. The present study describes the prevalence of tobacco and alcohol consumption and their relationships with the sociodemographic, medical and psychological variables in a population of women receiving surgery treatment for breast cancer.

METHODS: Between October 2014 and August 2015, a group of women receiving breast cancer treatment were recruited to participate to a screening and brief intervention program (SBI) for the consumption of tobacco and alcohol, adapted to the oncology context. Data on tobacco and alcohol consumption were co llected using two questionnaires : the smoking status identification (NIDA) and alcohol consumption (AUDIT-C). A questionnaire for socio- demographic data and two for psychological data (Thermometer of psychological distress; ESAS), have been used. The medical data were reported by participants and verified on medical records.

RESULTS: In a total of 11 months, 120 women with breast cancer were included in this study. A large majority of patients were hospitalized for a first-time cancer (80.8%), type invasive ductal carcinoma (70.8%) and were receiving surgery as primary treatment (45%). Furthermore, 30.8% of the women reported tobacco consumption and 38.4% high-risk alcohol consumption. Regarding mental health, 40.8% presented moderate to intense levels of psychological distress. No significant relationships were found between consumption scores and sociodemographic, medical or psychological characteristics. Only the patient's age was negatively associated with tobacco consum ption.

DISCUSSION: Tobacco and at-risk alcohol consumption are frequently reported behaviors during breast cancer treatment. Intervention strategies targeting risk behaviors related to addictive consumption should be implemented during the full treatment of breast cancer patients.

PMID:34756596 | DOI:10.1016/j.bulcan.2021.07.005

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Bone Conduction

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Bone conduction devices (BCDs) are a well-established and effective treatment solution for children with conductive and mixed hearing loss. Evidence indicates that early intervention through BCDs can improve hearing, speech, and language, and developmental outcomes. BCDs overcome several limitations associated with traditional hearing aids, and in many cases offer children an alternative to more invasive surgical management. Despite these benefits, children with conductive hearing loss are often subject to delays in intervention. In addition, interventional challenges and technological limitations of BCDs prevent widespread adoption and acceptance, particularly in early childhood.
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Continuing to establish the relationship between anatomical location of cutaneous head and neck melanoma primaries and locoregional sites of metastasis: A consideration of a new anatomical site, drainage to multiple and non-adjacent neck levels, and the impact on the selectivity of neck dissection

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J Plast Reconstr Aesthet Surg. 2021 Oct 7:S1748-6815(21)00460-5. doi: 10.1016/j.bjps.2021.09.022. Online ahead of print.

NO ABSTRACT

PMID:34756553 | DOI:10.1016/j.bjps.2021.09.022

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