Αρχειοθήκη ιστολογίου

Αλέξανδρος Γ. Σφακιανάκης
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5
Άγιος Νικόλαος Κρήτη 72100
2841026182
6032607174

Τετάρτη 6 Οκτωβρίου 2021

MicroRNA-146b-5p suppresses cholangiocarcinoma cells by targeting TRAF6 and modulating p53 translocation

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Via histochem

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Acta Histochem. 2021 Oct 1;123(7):151793. doi: 10.1016/j.acthis.2021.151793. Online ahead of print.

ABSTRACT

BACKGROUND: In view of the poor prognosis and high mortality of cholangiocarcinoma, there is a need for new therapeutic strategies. This study aims to reveal the biological function of miR-146b-5p in cholangiocarcinoma cell and its possible mechanism.

METHODS: The expression level and prognostic information on miR-146b-5p in cholangiocarcinoma were obtained in T CGA database. The biological function of miR-146b-5p on proliferation and vitality of cholangiocarcinoma cell HUCCT-1 was examined by EdU and MTT assay, and the apoptosis of HUCCT-1 cells transfected with miR-146b-5p mimic, mimic control, inhibitor, inhibitor control was detected by flow cytometry analysis. The western blot was done to evaluate the effect of miR-146b-5p targeting substrate and the expression of p53 in whole-cell protein and mitochondria fractions.

RESULTS: Our finding revealed that miR-146b-5p expression in patients with CHOL was lower than the normal group(p<0.001). MiR-146b-5p expression was down-regulated in human cholangiocarcinoma HUCCT-1 and RBE cells compared to normal control HIBEC and other cancer cells. The miR-146b-5p mimic could inhibit HUCCT-1 cell proliferation (p<0.05) and promote HUCCT-1 cell apoptosis significantly (p<0.05). The results of western blot showed that miR-146b-5p mimic could directly target TRAF6 3'UTR region and up-regulate the expression of p53 in mitochondria and miR-146b-5p inhibitor could down-regulated the level of p53 in mitochondria.

CONCLUSION: MiR-146b-5p is a cholangiocarcinoma suppressor by inhibiting cell proliferation and promoting cell apoptosis with targeting TRAF6, possibly via modulating p53 translocation to mitochondria.

PMID:34610483 | DOI:10.1016/j.acthis.2021.151793

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Effects of Dental Factors on Fungal Sinusitis

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Objectives: This study aimed to investigate the associations between dental treatments and fungal maxillary sinusitis (FMS). Methods: We retrospectively reviewed medical charts between July 2014 and March 2019. In total, 100 cases of FMS were included in this study. We also recruited 200 patients as a control group in the same period. Therefore, each of the FMS, chronic rhinosinusitis (CRS), and normal sinus groups consisted of 100 patients. We recorded all endodontic treatments (EDTs), tooth extractions, dental implantations, and ap ical lesions (ALs). Results: The FMS group had higher incidences of tooth extraction (49% vs. 11%, respectively) and EDT (29% vs. 16%, respectively) compared to the normal sinus group and fewer ALs compared to the CRS group (6% vs. 24%, respectively). There were significant differences between the CRS and normal sinus groups in the extraction rate (53% vs. 11%, respectively) and frequency of ALs (24% vs. 4%, respectively). The dental implantation prevalence rates were similar across all 3 groups. Conclusion: The rates of tooth extraction were significantly higher in the FMS and CRS groups compared to the normal sinus group. In addition, of the 3 conditions, FMS was related to EDT, and CRS was related to ALs.
ORL
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Arnold Kirkpatrick Henry (1886-1962) and his eponym (Master Knot of Henry): a narrative review

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Surg Radiol Anat. 2021 Oct 5. doi: 10.1007/s00276-021-02847-x. Online ahead of print.

ABSTRACT

PURPOSE: The aims of this review were to form a more precise description for Master Knot of Henry (MKH), and to modify classifications related to interconnections between flexor hallucis longus (FHL) and flexor digitorum longus (FDL) for showing all configurations in the literature.

METHODS: A literature search was performed in main databases to obtain information related to anatomical definitions and variations of MKH. The search was carried out using the following keywords: "Master Knot of Henry", "Chiasma plantare", "Flexor hallucis longus" and "Flexor digitorum longus". Information extracted from the studies was: sample size, numerical values, classifications, variation types, incidence of types, anatomical definitions of MKH, year of publication, and type of study.

RESULTS: This study proposes that MKH should be defined as the intersection territory where FDL crosses over FHL in the plantar foot. The postchiasmatic plantar area located at distal to MKH (the narrow space between MKH and the division of FDL) should be termed as the triangle of Henry. Moreover, the classification systems showing different configurations related to interconnections situated at Henry's triangle were updated as eight types to present all forms in the literature.

CONCLUSION: Our definitions may assist in determining the precise anatomical boundaries of MKH, an d thus facilitate the use of MKH as a surgical landmark. In addition, our modified classification systems covering all variations in the current literature may be helpful for surgeons and anatomists to understand formations of the triangle of Henry, and the long flexor tendons of the lesser toes.

PMID:34611753 | DOI:10.1007/s00276-021-02847-x

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Virtual reality versus optokinetic stimulation in visual vertigo rehabilitation

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Eur Arch Otorhinolaryngol. 2021 Oct 5. doi: 10.1007/s00405-021-07091-y. Online ahead of print.

ABSTRACT

BACKGROUND: Visual vertigo (VV) is a condition at which there is worsening or triggering of vestibular symptoms in certain visual environments with large size (full field) repetitive or moving visual patterns as shopping malls.

PURPOSE: This work was designed to study effect of virtual reality and optokinetic stimulation on rehabilitation of VV.

METHOD: A total of 60 subjects divided into 2 groups that were simply randomized by the concealed envelope method: Group I consisted of 30 VV patients underwent vestibular rehabilitation using virtual reality. Group II consisted of 30 VV patients underwent vestibular rehabilitation using optokinetic stimulation.

RESULTS: Significant improvement in performance in the two groups after rehabilitation with no statistically significant difference when comparing both groups.

CONCLUSIONS: A combined intense rehabilitation program including OPK stimulation or VR rehabilitation combined with home-based exercises appeared to be equally effective for management of patients with VV and improving their quality of life.

PMID:34611745 | DOI:10.1007/s00405-021-07091-y

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Comparison of Laryngeal Palpatory Scale (LPS), With Surface Electromyographic Measures in Patients with Muscle Tension Dysphonia

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The aim of this study was to examine the laryngeal palpatory scale (LPS) to ascertain possible correlation with neck surface electromyography (sEMG).
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Parathyroid Gland Autofluorescence Characteristics in Patients With Primary Hyperparathyroidism

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Objective

Near-infrared imaging for intraoperative parathyroid gland (PG) detection has recently commanded significant attention. The PTeye (Medtronic, Minneapolis, MN) is a probe-based system for near-infrared autofluorescent evaluation of PGs. This study was designed to evaluate the capabilities of the PTeye in the setting of surgery for primary hyperparathyroidism.

Study Design

Prospective, Cohort study.

Methods

This single-institution, prospective cohort study included all patients undergoing parathyroidectomy for primary hyperparathyroidism with presumed single gland disease from June 2020 to December 2020. Absolute intensity and intensity ratios, with the thyroid as the control tissue, were obtained for the adenoma, ipsilateral normal PG, and adjacent tissue. The ability of the PTeye to function when not in direct contact with tissue was measured.

Results

Twenty-two patients were included. The median intensity ratio for the in situ adenomas was 4.38 (interquartile range [IQR]: 2.03–5.87), ipsilateral normal PGs 6.17 (IQR: 3.83–7.67), strap muscle 0.47 (IQR: 0.30–0.60), and fat 0.20 (IQR: 0.17–0.47). All normal PGs and 21/22 adenomas demonstrated autofluorescence above the detection threshold. The PTeye functioned at a maximum distance of separation of 10 mm through saline medium and 6 mm through clear solid medium.

Conclusion

This study confirms the PTeye's ability to recognize PGs with a high degree of precision. The device was found to function properly even with the probe not in direct contact with the tissue. Although adenomatous PGs appear to demonstrate altered autofluorescent properties from normal PGs, additional research is required to determine if these differences are clinically useful.

Level of Evidence

3 Laryngoscope, 2021

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Impact of Preoperative Steroids Administration on Endoscopic Sinus Surgery: Systematic Review of Literature, and a Survey in Saudi Arabia

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Abstract

There is limited knowledge in the literature and lack of clear protocols among practitioners regarding preoperative steroids administration for patients undergoing endoscopic sinus surgery (ESS). This study aimed to identify the practice patterns of rhinologists in Saudi Arabia as well as systematically review all health-related evidence regarding the use of preoperative steroids for ESS. A previously used questionnaire was modified and distributed in Saudi Arabia among rhinologists who finished their residency training. It entailed questions about their qualifications and preoperative steroids use, preferred regimen, and possible benefits. Also, a systematic literature review using four major databases was conducted to build a scoping view of the current evidence. A total of 94 subjects responded to the mailed survey. Of them, 72(76.6%) used preoperative steroids; 40 subjects believed that there is a strong supporting evidence while 32 reported that there is no solid evidence. The commonest indication was chronic rhinosinusitis with nasal polyp followed by allergic fungal rhinosinusitis. More than half of subjects (54.2%) preferred medium-dose prednisone (30–40 mg/day). A considerable number believed that steroids decreased surgical bleeding (n = 57, 79.2%), improved surgical field visualization (77.8%), decreased surgical time (77.8%), and decreased mucosal inflammation (61.1%). Thirteen studies including 1028 patients were eligible for the systematic review. Only three studies reported a statistically significant effect of steroids in reducing intraoperative hemorrhage, while only two studies revealed that steroids significantly improved surgical field quality. In two studies, steroids showed a significant effect in reducing eosinophil infiltration. There is a major number of rhinology experts using preoperative steroids for patients undergoing ESS but there is a wide variation among their practice patterns. The current potent ial advantages of steroids need to be supported by further large randomized clinical trials to establish clear guidelines.

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Loupe Assisted Thyroidectomy: A Tool for Reducing Complications

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Abstract

The objective of this study is to assess if the use of magnification can reduce the incidence of hypocalcemia and vocal cord palsy in thyroid surgery. Data of patients who underwent total thyroidectomy (N = 50) for thyroid malignancy were analyzed retrospectively for 1 year. The patients were divided into two groups based on surgery with and without loupes. Hypocalcemia and Vocal cord palsy was assessed pre as well as post-operatively and the observations were noted. Descriptive statistics were performed to assess the proportion of the respective groups. Inferential statistics to find out the difference between the groups was done using the chi-square test. Significance level was kept at 5%. The incidence of hypocalcemia was 36.9% in the group done without loupes compared to 7.6% with loupes. The event of vocal cord injury though transient was 33% when done without loupes (p < 0.05). Magnification is crucial for the visualization of the n eurovascular anatomy which is depicted in our study. Although the study includes less number of cases, it is evident that the use of loupe magnification can reduce the morbidity associated with thyroid surgery to a great extent. We recommend the use of loupe magnification during surgery whenever possible.

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Efficacy of Sucralfate in Alleviating Post Tonsillectomy Symptoms and Morbidity: A Comparative Randomized Interventional Study

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Abstract

Pain following tonsillectomy still remains the main concern of topic and it occurs along with sever ear pain and trismus until and unless the exposed and inflamed mucosa gets covered with the regenerated mucosa. To study the efficacy of sucralfate in alleviating postoperative pain and morbidity following tonsillectomy. Subjects included in our study were patients which were fulfilling criteria for tonsillectomy and were admitted under the Department of Otorhinolaryngology, SMS Medical College and Hospital, Jaipur from 1st July 2019 to 31st March 2020. 64 patients were evaluated and were randomly allocated into study and control group based on the administration of topical sucralfate. 64 patients who were admitted for tonsillectomy under the Department of Otorhinolaryngology, SMS Medical College and Hospital, Jaipur from 1st July 2019 to 31st March 2020 were included in study. Patients were evaluated and were randomly allocated into study and control group based o n the administration of topical sucralfate. The incidence of throat pain and otalgia showed significant difference among both the group following postoperative day 2 onwards. On postoperative day 2, significant difference in trismus was also found. Effective alleviation of pain not only improves early dietary intake of the patients but also allays fear of apprehensive parents.

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Long-Term Efficacy of Ultrasound-Guided Laser Ablation for Papillary Thyroid Microcarcinoma: Results of a 10-Year Retrospective Study

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Thyroid, Ahead of Print.
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First dorsal metacarpal artery perforator-based propeller flap: functional anatomy and clinical application in soft-tissue defects of the dorsal hand and digits

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Surg Radiol Anat. 2021 Oct 6. doi: 10.1007/s00276-021-02845-z. Online ahead of print.

ABSTRACT

BACKGROUND: Many approaches have been reported to repair soft-tissue defects of the hand using dorsal metacarpal artery flaps. Use of a perforator-based propeller flap from the first intermetacarpal space to the dorsum of the hand has been described. The aim of this study was to confirm the functional anatomy of a first dorsal metacarpal artery (FDMA) perforator flap.

METHODS : Twenty-nine fixed cadaveric hands were dissected to determine the origin, course, and branches of the FDMA. Clinically, five cases of soft tissue defects of the hand underwent reconstructive surgery using an FDMA perforator-based propeller flap.

RESULTS: The FDMA was found in 27 specimens (93%). The ulnar branch of the FDMA always supplied the cutaneous perforator (mean ± SD, 4.3 ± 1.6), and the most distal cutaneous perforating branch was found along the metacarpal long axis within 25 mm of the tip of the metacarpal head with high frequency (28/29, 97%). In the two hands that had aplasia of the FDMA, well-developed perforators arose directly from the radial artery and advanced to the metacarpal head. Seven hands (24%) had perforators arising from the palmar arterial system, penetrating through or passing close by the second metacarpal bone. In clinical application, all the flaps survived completely without major complications.

CONCLUSIONS: The FDMA perforator-based propeller flap is minimally invasive and technically simple. It is expected to be a new option for hand reconstruction.

PMID:34613448 | DOI:10.1007/s00276-021-02845-z

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