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Τετάρτη 26 Μαΐου 2021

A Pediatric Lateral Submental Mass: A Rare Presentation of Dermoid Cyst

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Ear Nose Throat J. 2021 May 25:1455613211019787. doi: 10.1177/01455613211019787. Online ahead of print.

ABSTRACT

Dermoid cysts are benign cutaneous neoplasms that contain germ cells from the ectoderm and mesoderm. Approximately 70% are diagnosed during childhood before the age of 5. Although they can present throughout the body, the prevalence is 7% for those arising from the head and neck. These lesions present primarily as midline masses and are classified as sublingual, su bmental, or overlapping depending on their relationship with the muscles of the floor of mouth. A 10-year-old female presented with a 2-week history of right submental swelling. She denied pain, dysphagia, odynophagia, or respiratory distress. Physical examination showed nontender fullness of the submental region without erythema or induration and no palpable cervical lymphadenopathy. Ultrasound showed an oval-shaped cystic mass measuring 4.8 × 4.0 × 2.6 cm. After a course of clindamycin, a computed tomography was obtained which showed a right 4.5 × 4.0 × 2.6 cm fluid filled lesion, within the right lateral floor of mouth. Intraoral resection was performed and the mass was freed from the geniohyoid and mylohyoid. Histopathology was consistent with a dermoid cyst. Submental masses have a broad differential, but rarely are they dermoid cysts if they arise lateral to the midline. With appropriate diagnosis and total surgical excision, patients and their families can be reassured in similar cases.

PMID:34034545 | DOI:10.1177/01455613211019787

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COVID‐19 Cross infection rate after surgical procedures. Incidence and outcome

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Abstract

Introduction

Severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) is transmitted by droplet as well as airborne infection. Surgical patients are vulnerable to the infection during their hospital admission. Some surgical procedures are classified as aerosol generating (AGP).

Methods

Retrospective observational study in a tertiary healthcare centre of four specialities associate with known AGP's during the four months of the first wave of UK COVID-19 epidermic to identify post-surgical cross infection with SARSCoV-2 within 14 days of a procedure.

Results

There were 3410 procedures reported during this period. The overall cross infection rate from tested patients was 1.3% (4 patients), i.e., 0.11% of all operations over 4 months. Ear, nose, and throat carried slightly higher rate of infection (0.4%) than gastroenterology (0.08%). The mortality rate was 0.3% (one gastroenterology patient from 304 positive cases) compared to 0% if surgery performed after recovery from SARSCoV-2 and 37.5% when surgery was conducted during the incubation period of the disease. Routine preoperative rapid screening tests and self-isolation is crucial to avoid the risk of cross infection. Patients with underlying malignancy or receiving chemotherapy were more prone to pulmonary complications and mortality.

Conclusion

The risk of SARS-COV-2 cross infection after surgical procedure is very low. Preoperative screening and self-isolation together with personal protective measures should be in place to minimize the cross infection.

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Percutaneous and open tracheostomy in patients with COVID‐19: The Weill Cornell experience in New York City

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Abstract

Objective

Report long-term tracheostomy outcomes in patients with COVID-19.

Methods

Prospectively collected data were extracted for adults with COVID-19 undergoing percutaneous or open tracheostomy between April 4 and June 2, 2020 at a major medical center in New York City. The primary endpoint was weaning from mechanical ventilation. Secondary outcomes included sedation weaning, decannulation, and discharge.

Results

101 patients underwent tracheostomy, including 48 percutaneous (48%) and 53 open (52%), after a median intubation time of 24 days (IQR 20, 31). The most common complication was minor bleeding (n = 18, 18%). The all-cause mortality rate was 15% and no deaths were attributable to the tracheostomy. Eighty-three patients (82%) were weaned off mechanical ventilation, 88 patients (87%) were weaned off sedation, and 72 patients (71%) were decannulated. Censored median times from tracheostomy to sedation and ventilator weaning were 8 (95% CI 6–11) and 18 (95% CI 14–22) days, respectively (uncensored: 7 and 15 days). Median time from tracheostomy to decannulation was 36 (95% CI 32–47) days (uncensored: 32 days). Of those decannulated, 82% were decannulated during their index admission. There were no differences in outcomes or complication rates between percutaneous and open tracheostomy. Likelihood of discharge from the ICU was inversely related to intubation time, th ough the clinical relevance of this was small (HR 0.97, 95% CI 0.943–0.998; p = 0.037).

Conclusion

Tracheostomy by either percutaneous or open technique facilitated sedation and ventilator weaning in patients with COVID-19 after prolonged intubation. Additional study on the optimal timing of tracheostomy in patients with COVID-19 is warranted.

Level of Evidence

3

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Laryngeal Sarcoidosis and Swallowing: What Do We Know About Dysphagia Assessment and Management in this Population?

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Dysphagia. 2021 May 26. doi: 10.1007/s00455-021-10305-4. Online ahead of print.

ABSTRACT

INTRODUCTION: Sarcoidosis is a chronic granulomatous disease of unknown aetiology and laryngeal involvement is seen in a small percentage of cases. Dysphagia is a common but under-reported symptom. Little is known about how dysphagia typically presents or is managed in the context of this fluctuating disease. We present our case series using an SLT-led model of assessment and management.

METHODS: A literature search was conducted for any articles that reported both laryngeal sarcoidosis and dysphagia. We then analysed a case series of laryngeal sarcoidosis patients treated at Charing Cross Hospital. We report on multidimensional swallowing evaluation and rehabilitative interventions.

RESULTS: Seventeen papers report both laryngeal sarcoidosis and dysphagia, with only one paper giving details on the nature of the dysphagia and the treatment provided. In our case series (n = 7), patients presented with FOIS Scores ranging from 5 to 7 pre-operatively (median = 6). Aspiration (median PAS Score = 6 and Range = 3-8) and pharyngeal residue were common. Sensory issues were also prevalent with most unaware of the extent of their difficulties. Management interventions included safe swallowing advice, compensatory strategies, exercises and close surveillance given their potential for repeated surgical interventions.

CONCLUSION: Laryngeal sarcoidosis is a rare condi tion. Dysphagia is under-reported and our experience highlights the need for specialist dysphagia intervention. Further research is required to understand dysphagia management requirements in the context of this fluctuating disease process.

PMID:34037851 | DOI:10.1007/s00455-021-10305-4

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Potential protective effect of hesperidin on hypoxia/reoxygenation-induced hepatocyte injury

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Exp Ther Med. 2021 Jul;22(1):764. doi: 10.3892/etm.2021.10196. Epub 2021 May 13.

ABSTRACT

Hesperidin (HDN) has been reported to have hydrogen radical- and hydrogen peroxide-removal activities and to serve an antioxidant role in biological systems. However, whether HDN protects hepatocytes (HCs) against hypoxia/reoxygenation (H/R)-induced injury remains unknown. The present study aimed to explore the role of HDN in H/R-induced injury. HCs were isolated and cultured under H/R conditions with or without HDN treatment. HC damage was markedly induced under H/R, as indicated by cell viability, supernatant lactate dehydrogenase levels and alanine aminotransferase levels; however, HDN treatment significantly reversed HC injury. Oxidative stress markers (malondialdehyde, superoxide dismutase, glutathioneand reactive oxygen species) were increased markedly during H/R in HCs; however, this effect was significantly attenuated after exposure to HDN . Compared with those of the control group, the mRNA expression levels of IL-6 and TNF-α in HCs and the concentrations of IL-6 and TNF-α in the supernatants increased significantly following H/R, and HDN significantly ameliorated these effects. Western blotting demonstrated that microtubule-associated protein 1 light chain 3α (MAP1LC3A, also known as LC3) and Beclin-1 protein expression levels increased, while sequestosome 1 levels decreased during H/R following exposure to HDN. The number of GFP-LC3 puncta in HCs following exposure to HDN was increased compared with that observed in HCs without HDN exposure under the H/R conditions after bafilomycin A1 treatment. In summary, the present study demonstrated that HDN attenuated HC oxidative stress and inflammatory responses while enhancing autophagy during H/R. HDN may have a potential protective effect on HCs during H/R-induced injury.

PMID:34035861 | PMC:PMC8135133 | DOI:10.3892/etm.2021.10196

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Dynamics of serum α-fetoprotein in viral hepatitis C without hepatocellular carcinoma

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Exp Ther Med. 2021 Jul;22(1):749. doi: 10.3892/etm.2021.10181. Epub 2021 May 12.

ABSTRACT

Viral hepatitis C represents a significant liver pathology worldwide, with a detrimental impact on national health systems. The present study aimed to correlate the levels of serum α-fetoprotein (AFP) with prognostic tools such as Fibroscan®, the presence of mixed cryoglobulinemia, and various demographic and standard biochemical markers, in patients with chronic hepatitis C, unrelated to hepatocellular carcinoma (HCC). A clinical study was designed considering three study groups: Hepatitis C virus (HCV) group including 35 patients with chronic hepatitis C and detectible viral load; sustained viral response (SVR) group including 20 HCV patients without detectable virus load 12 weeks after therapy cessation; a control group represented by 37 healthy volunteers. It was observed that serum AFP was moderately increased in the HCV and SVR groups and was positively correlated with aspartate transaminase (AST), alkaline phosphatase (AP), and γ-glutamyl transferase (GGT). The incidence of mixed cryoglobulinemia was increased in the HCV group, and the degree of fibrosis assessed by Fibroscan® was increased in both the HCV and SVR groups. In conclusion, the data revealed that a moderate increase in AFP levels could be present in patients with HCV even in the absence of HCC, unrelated to viral load or therapy response and that there was a linear positive correlation between serum levels of AFP and the degree of hepatic cytolysis and cholestasis. Additionally, mixed cryoglobulinemia was present in HCV patients with patent viral load, decreasing in those with SVR after therapy cessation unrelated to any renal impairment, while the degree of fibrosis was increased in HCV-infected patients, with no reversibility 12 weeks after successful therapy.

PMID:34035846 | PMC:PMC8135122 | DOI:10.3892/etm.2021.10181

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Effects of withdrawing an atherogenic diet on the atherosclerotic plaque in rabbits

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Exp Ther Med. 2021 Jul;22(1):751. doi: 10.3892/etm.2021.10183. Epub 2021 May 12.

ABSTRACT

Lifestyle interventions and pharmacotherapy are the most common of non-invasive treatments for atherosclerosis, but the individual effect of diet on plaques remains unclear. The current study aimed to investigate the effect of withdrawing the atherogenic diet on plaque in the aortas of rabbits. Experimental atheroma was induced in 33 rabbits using a 1% high cholesterol diet for 30 days (H-30 d) or 90 days (H-90 d, baseline group). After 90 days of the atherogenic diet, the remaining animals were divided into four groups: A total of 10 rabbits continued to consume the atherogenic diet for 50 days (H-90 d & H-50 d; n=5) or 140 days (H-90 d & H-140 d; n=5). Another 13 rabbits were switched to a chow diet for 50 days (H-90 d & C-50 d; n=7) or 140 days (H-90 d & C-140 d; n=6). A total of 10 age-matched rabbits in the control groups were fed a chow diet for 90 and 230 days, respectively. The en face or cross-sectional plaque areas were determined using oil red O staining and elastic van Gieson staining. Immunohistochemistry analyses were used to assess the macrophages or smooth muscle cell contents. When fed an atherogenic diet for 90 days, the rabbits' abdominal aortas exhibited severe atherosclerotic lesions (the median en face plaque area was 63.6%). After withdrawing the atherogenic diet, the plaque area did not shrink with feeding the chow diet compared with the baseline, but increased to 71.8 or 80.5% after 50 or 140 days, respectively. After removing cholesterol from the diet, the lipids content in the plaques increased during the first 50 days, and then decreased compared with the baseline group. Furthermore, withdrawing the atherogenic diet increased the total collagen content and the percentage of the smooth muscle cells, alleviated macrophage infiltration, decreased the vulnerable index and promoted the cross-linking of collagen. Feeding the rabbits an atherogenic diet followed by removal of cholesterol from the diet did not lead to the regression of established lesions but instead delayed the progression of the lesions and promoted the stabilization of the plaque.

PMID:34035848 | PMC:PMC8135140 | DOI:10.3892/e tm.2021.10183

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Clinical and therapeutic features of acute cholecystitis in diabetic patients

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Exp Ther Med. 2021 Jul;22(1):758. doi: 10.3892/etm.2021.10190. Epub 2021 May 13.

ABSTRACT

The present study aimed to compare the clinical, paraclinical, intraoperative findings, and postoperative complications in acute cholecystitis in diabetic patients vs. non-diabetic patients. A 2-year retrospective study was performed on the patients who underwent emergency cholecystectomy for acute cholecystitis between 2017 and 2019 at the 4th Department of Surgery, Emergency University Hospital Bucharest. The diabetic subgroup numbered 46 eligible patients and the non-diabetic one 287 patients. Demographics, the severity of the clinical forms, biological variables (including white cell count, urea, creatinine, coagulation and liver function tests) comorbidity status, surgical approach, postoperative complications, and hospital stay were analyzed. Statistical analyses were performed to assess comparative results between the aforementioned data (S PSS V 13.0). The CCI and ASA risk classes were increased in the diabetic group, with 34.78% of patients having 3 or more associated comorbidities. No statistically significant associations were demonstrated between diabetes and the severity of the cholecystitis and risk for conversion. Postoperatively both minor complications such as surgical site infections and major cardiovascular events were more common in the diabetic subgroup (P=0.0254), well associated with the preoperative status and baseline cardiovascular comorbidities. Laparoscopic cholecystectomy is a safe procedure for diabetic patients, which can provide the best outcomes, by decreasing the risks of surgical wounds. Attentive perioperative care and good glycemic control must be provided to minimize the risk of complications.

PMID:34035855 | PMC:PMC8135114 | DOI:10.3892/etm.2021.10190

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Clinical application of whole-exome sequencing: A retrospective, single-center study

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Exp Ther Med. 2021 Jul;22(1):753. doi: 10.3892/etm.2021.10185. Epub 2021 May 12.

ABSTRACT

The aim of the present study was to assess the practical diagnostic value of whole-exome sequencing (WES) in patients with different phenotypes and to explore possible strategies to increase the capability of WES in identifying disease-causing genes. A total of 1,360 patients (aged from 1 day to 42 years old) with manifestations of genetic diseases were genotyped using WES and statistical analysis was performed on the results obtained. Within this cohort, the overall positive rate of identification of a disease-causing gene alteration was 44.41%. The positive identification rate where trio-samples were used (from the proband and both parents) was higher than that where a single proband sample was used (50.00 vs. 43.71%), and 604 positive cases with 150 genetic syndromes, 510 genes and 718 mutations were detected. Missense mutations were the most c ommon variations (n=335, 45.27%) and visual or auditory abnormalities (58.51%) had the highest rate of association with a genetic abnormality. The positive detection rate of WES was elevated with the increase in the number of clinical symptoms from 1 to 8. The present study indicated that WES may be used as a valuable tool in the clinic and the positive rate depends more on the professional experience of clinicians rather than on the analytical capabilities of the data analyst. At the same time, particular attention must be paid to certain possible factors (such as the age of the patients as well as possible exon deletions), which may affect the diagnostic rate while applying this process.

PMID:34035850 | PMC:PMC8135134 | DOI:10.3892/etm.2021.10185

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Portal vein thrombosis: A concise review (Review)

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Exp Ther Med. 2021 Jul;22(1):759. doi: 10.3892/etm.2021.10191. Epub 2021 May 13.

ABSTRACT

Portal vein thrombosis (PVT) is a frequent complication in cirrhotic patients, but it may also exist as a basic vascular condition even without any liver damage. Local and systemic factors play a significant role in the pathogenesis of PVT; yet, in practice, more than one factor may be identified. PVT can be considered a result of liver fibrosis and hepatic insufficiency. The JAK2 mutation has been accepted as a factor producing PVT. In general, the anticoagulants are recommended but this therapy should be used carefully in treating patients that associate coagulopathy or thrombocytopenia and esophageal varices. Acute PVT without bowel infarction has a good prognosis. In liver cirrhosis, the mortality due to hemorrhage is higher than in chronic PVT. Therefore, for the patients with PVT, the survival rate is decreased by 55% in two years, du e to hepatic insufficiency. Regarding the treatment, LMWH (low molecular weight heparine) is the most utilized in patients with cirrhosis, non-malignancies, infections, or those who are awaiting a liver transplant. DOACs (direct-acting oral anticoagulants) may be used in the rest of the medical conditions, being safe and equal to LMWH.

PMID:34035856 | PMC:PMC8135136 | DOI:10.3892/etm.2021.10191

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Long non-coding RNA DUXAP8 promotes tumorigenesis by regulating IGF1R via miR-9-3p in hepatocellular carcinoma

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Exp Ther Med. 2021 Jul;22(1):755. doi: 10.3892/etm.2021.10187. Epub 2021 May 12.

ABSTRACT

Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related death worldwide with a low 5-year survival rate. Long non-coding RNA (lncRNA) double homeobox A pseudogene 8 (DUXAP8) is an oncogene and a potential biomarker in various tumors, such as ovarian, colorectal and non-small-cell lung cancer. However, the function and molecular mechanism underlying DUXAP8 in HCC progression is not completely understood. The expression of DUXAP8, microRNA (miR)-9-3p and insulin-like growth factor 1 receptor (IGF1R) in HCC tissues and cells was detected via reverse transcription-quantitative PCR. The expression levels of IGF1R and epithelial-mesenchymal transition-associated proteins (Snail, Slug, E-cadherin, N-cadherin and vimentin) were assessed via western blotting. The effects of DUXAP8, miR-9-3p and IGF1R on proliferation, migration and inva sion were examined by conducting Cell Counting Kit-8 and Transwell assays, respectively. The interaction between miR-9-3p and DUXAP8 or IGF1R was predicted using StarBase or TargetScan, and further assessed using dual luciferase reporter and RNA immunoprecipitation assays. DUXAP8 and IGF1R were upregulated and miR-9-3p was downregulated in HCC tissues and cells compared with adjacent healthy tissues and a normal liver cell line, respectively. miR-9-3p overexpression decreased the protein expression level of IGF1R, and miR-9-3p knockdown enhanced the protein expression level of IGF1R in HCC cells compared with the corresponding control groups. Moreover, compared with the corresponding control groups, DUXAP8 knockdown and miR-9-3p overexpression increased E-cadherin protein expression levels, and decreased Snail, Slug, N-cadherin and vimentin protein expression levels. However, miR-9-3p inhibitor and IGF1R overexpression reversed DUXAP8 knockdown- and miR-9-3p overexpression-induced e ffects, respectively. In addition, compared with the corresponding control groups, DUXAP8 knockdown and miR-9-3p overexpression suppressed proliferation, migration and invasion, which was reversed by miR-9-3p inhibitor and IGF1R overexpression, respectively. Moreover, miR-9-3p as the target of DUXAP8 and IGF1R as the target of miR-9-3p were verified in HCC cells. lncRNA DUXAP8 contributed to HCC tumorigenesis via the miR-9-3p/IGF1R axis, providing a novel therapeutic approach for HCC diagnosis and treatment.

PMID:34035852 | PMC:PMC8135127 | DOI:10.3892/etm.2021.10187

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