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Αλέξανδρος Γ. Σφακιανάκης

Thursday, January 28, 2021

De Novo vs Inverted Papilloma–Associated Sinonasal Squamous Cell Carcinoma Survival Outcomes

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This systematic review and meta-analysis uses data from studies retrieved f rom an Ovid Medline, Embase, Scopus, and Cochrane Library database search to investigate survival differences between de novo and inverted papilloma–associated sinonasal squamous cell carcinoma pathogenesis.
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Prevalence of anemia among patients with solid cancers at diagnosis

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by Mazen Almehmadi, Magdi Salih, Tariq E. Elmissbah, Abdulaziz Alsharif, Naif Alsiwiehri, Khalid Alzahrani, Alaa Shafie, Haytham Dahlawi

Objectives

The aim of this study was to estimate the prevalence of anemia among patients newly diagnosed with solid malignancies at King Faisal Hospital in Taif Province, Kingdom of Saudi Arabia.

Methods

A descriptive, cross-sectional, hospital-based study was conducted from December 2017 to March 2020. A total of 320 patients newly diagnosed with solid malignancy were examined to assess anemia prevalence.

Results

Of 320 patients with solid cancers, 245 (76.6%) were female and 75 (23.4%) were male. The median (interquartile range) age of 57 (45 ─ 66) years, range between 16 and 108 years. The types of cancer included were breast (29.1%), female genital tract (20.0%), colorectal (25.3%), head and neck (10.3%), urinary bladder (4.7%), prostate (5.0%), lung (2.5%), liver (2.2%) and lymphoma (0.9%). The prevalence of anemia at diagnosis of cancer was 44.1% across all cancer types. A higher anemia prevalence was noted in colorectal (n = 46/81, 56.8%) (p = 0.047).

Conclusion

Patients with colorectal or female genital tract cancers had a higher anemia prevalence (56.8% and 43.8%, respectively) than did patients with other cancers.

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The Possible Role of Sclerostin in the Pathogenesis of Tympanosclerosis

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Objective: The aim of this study was to investigate sclerostin (SOST) expression in a rat model of experimental tympanosclerosis (TS) and its possible role in the formation of TS. Materials and Methods: Thirty-four SD rats were randomly divided into 2 groups: experimental group (n = 17) and normal group (n = 17). The left tympanic cavities in the experimental group were inoculated with methicillin-resistant Staphylococcus aureus. The changes of t ympanic membranes were examined and recorded under otoendoscope. Haematoxylin-eosin staining was adopted to detect the morphological changes in the tympanic membrane and middle ear mucosa. Immunohistochemistry and Western blot analysis were used to observe the expression of SOST, Wnt3a, β-catenin, and P-ERK1/2. Results: In the experimental group, sclerotic lesions were observed in 54.5% ears in the end of 6 weeks. Morphological changes such as mucosa incrassation, inflammatory cells infiltration, fibrous tissue proliferation, and interstitial tissue incrassation prominently appeared in the tympanic membrane and middle ear mucosa. SOST protein was mainly distributed in the cytoplasm of epithelial cells and gland cells, the expression of which increased significantly in the calcified experimental ears. In addition, expression levels of Wnt3a, β-catenin, and P-ERK1/2 increased significantly in the calcified group too. Conclusion: The upregulated expression level of SOST may be involved in the formation of TS, first, through the pro-phosphorylation of ERK1/2 in the inflammatory stage, and then through the enhancement of Wnt3a in the osteogenic stage.
Audiol Neurotol
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Stem Cells and Gene Therapy in Progressive Hearing Loss: the State of the Art

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Abstract

Progressive non-syndromic sensorineural hearing loss (PNSHL) is the most common cause of sensory impairment, affecting more than a third of individuals over the age of 65. PNSHL includes noise-induced hearing loss (NIHL) and inherited forms of deafness, among which is delayed-onset autosomal dominant hearing loss (AD PNSHL). PNSHL is a prime candidate for genetic therapies due to the fact that PNSHL has been studied extensively, and there is a potentially wide window between identification of the disorder and the onset of hearing loss. Several gene therapy strategies exist that show potential for targeting PNSHL, including viral and non-viral approaches, and gene editing versus gene-modulating approaches. To fully explore the potential of these therapy strategies, a faithful in vitro model of the human inner ear is needed. Such models may come from induced pluripotent stem cells (iPSCs). The development of new treatment modalities by combining iPSC modeling with novel and innovative gene therapy approaches will pave the way for future applications leading to improved quality of life for many affected individuals and their families.

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5 things to know about capnography and respiratory distress

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Understand how monitoring end-tidal carbon dioxide helps assess and treat a patient in respiratory distress
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Wednesday, January 27, 2021

Acute Flaccid Paralysis in a Child: It Is Not Guillain-Barré Syndrome Always!

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The most common etiology of acute flaccid paralysis in this entire population was neuroparalytic snake envenomation, which was responsible for 51.9% of the cases, followed by the Guillain Barre syndrome (33.1%). These two etiologies accounted for 85% of all patients.

Acute Flaccid paralysis in adults: Our experience - NCBI - NIHhttps://www.ncbi.nlm.nih.gov › articles › PMC4126112

Michael Wilson, MD, senior author of the study that found acute flaccid myelitis (AFM) is caused by an enterovirus. AFM is a polio-like illness that causes permanent, sometimes life-threatening paralysis. There're 500 confirmed cases of AFM since 2012.Oct 21, 2019

'Missing' Virus Detected in Dozens of Children Paralyzed by Polio ...https://www.ucsf.edu › news › 2019/10 › missing-virus-d..

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High Flow Nasal Cannula Therapy as a Primary Mode of Respiratory Support in a Pediatric Intensive Care Unit

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Abstract

Objective

To assess efficacy and safety of High flow nasal cannula therapy (HFNC) as primary mode of treatment for children with respiratory distress.

Methods

Consecutive patients (1 mo-16 years) with respiratory distress were assessed for respiratory clinical score, COMFORT score and saturation to FiO2 (SF) ratio.

Results

A total of 188 (91.7%) patients out of 205 responded to HFNC alone. The respiratory clinical score and COMFORT score were lower with higher SF ratio in these than 17 patients who required ventilation (P<0.001). Median (IQR) time to failure was 2 (1.75–24) hours. Air leak was seen in 2 (1%) patients.

Conclusions

HFNC is an effective and safe primary mode of respiratory support in children with respiratory distress. Children who succeed on HFNC show a favorable clinical response within first few hours.

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