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influenza prevention and control, especially for seasons after long periods of low-exposure to influenza viruses.As of August 16, 2021, there have been 207,173,086 confirmed cases and 4,361,996 deaths due to the coronavirus disease (COVID-19), and the pandemic remains a global challenge. To date, no effective and approved drugs are available for the treatment of COVID-19. Angiotensin-converting enzyme 2 (ACE2) plays a crucial role in the invasion into host cells by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiological agent of COVID-19. Notably, ACE2 density is influenced by medical conditions, such as hypertension, or by drugs, including angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs), which can change the fate of SARS-CoV-2 infectivity. ACE2 is a target for these drugs and can be manipulated to limit the viral entry and replication within the cells. Different strategies that are aimed at blocking ACE2 with small molecules, peptides, and antibodies, or by neutralizing the virus through its competitive binding with human recombinant soluble ACE2 (hrsACE2) are currently under investigation. In this article, we review the current state of knowledge that emphasizes the need to find effective therapeutic agents against COVID-19 by exploiting ACE2 as a potential target. The increased soluble ACE2 levels and the application of hrsACE2 in patients with COVID-19 can be implemented to control the disease. It has not yet been established whether hypertension and other comorbidities, independent of age, have a direct role in COVID-19. Therefore, the use of renin-angiotensin system inhibitors, ACEIs and ARBs, should not be discontinued during COVID-19 treatment.Thermogelling hydrogels, such as poly(N-isopropylacrylamide) [P(NiPAAm)], provide tunable constructs leveraged in many regenerative biomaterial applications. Recently, our lab developed the crosslinker poly(glycolic acid)-poly(ethylene glycol)-poly(glycolic acid)-di(but-2-yne-1,4-dithiol), which crosslinks P(NiPAAm-co-glycidyl methacrylate) via thiol-epoxy reaction and can be functionalized with azide-terminated peptides via alkyne-azide click chemistry. This study's aim was to evaluate the impact of peptides on the physicochemical properties of the hydrogels. The physicochemical properties of the hydrogels including the lower critical solution temperature, crosslinking times, swelling, degradation, peptide release and cytocompatibility were evaluated. The gels bearing peptides increased equilibrium swelling indicating hydrophilicity of the hydrogel components. Comparable sol fractions were found for all groups, indicating that inclusion of peptides does not impact crosslinking. Moreover, the inclusion of a matrix metalloproteinase-sensitive peptide allowed elucidation of whether release of peptides from the network was driven by hydrolysis or enzymatic cleavage. The hydrophilicity of the network determined by the swelling behavior was demonstrated to be the most important factor in dictating hydrogel behavior over time. This study demonstrates the importance of characterizing the impact of additives on the physicochemical properties of hydrogels. These characteristics are key in determining design considerations for future in vitro and in vivo studies for tissue regeneration.Patients with immunodeficiency are at an increased risk of recurrent COVID-19 infection. They may lack the natural immune response that usually confers long-lasting immunity. Here, we present our experience managing one such patient, who had a COVID-19 infection twice, 5 months apart. He had a positive SARS-CoV-2 real-time reverse transcription polymerase chain reaction (RT-PCR) and computed tomography (CT) thorax with classical findings of COVID-19 on both occasions. He had multiple negative RT-PCR tests and two CT scans without COVID-19 features between these two infections. While the antibody response to the first infection was not detectable, the response to the second infection was robust. Live attenuated vaccines are contraindicated in patients with immunodeficiency, and other vaccines may not elicit an adequate immune response. A high index of suspicion for recurrent COVID-19 is warranted in this group of patients.Urachal carcinoma is a rare malignancy of all bladder carcinomas. Metastatic lung tumours showing multiple nodules are rare without a local recurrence. We describe a case of multiple metastatic lung cancer from urachal carcinoma that required differentiation from primary lung cancer.Inflammatory myofibroblastic tumour (IMT) of the lung is a rare tumour encountered in children. Although it is seen mostly in paediatric ages, a small number of cases exists in the literature. It may appear as an inflammatory mass or may have the characteristics of a tumour with the ability for recidivism and metastasis. Careful follow-up of the cases is required to differentiate between the two. We present the case of a 4-year-old girl who presented with cough, and the chest x-ray and computed tomography scan revealed a tumour mass in the right lung. After lobectomy, histological examination combined with immunohistochemical study discovered an IMT of the lung.Expiratory central airway collapse (ECAC) is a pathology gaining recognition in the medical community due to its unspecific symptoms and diagnostic challenges. Its current gold standard for diagnosis, dynamic bronchoscopy, is invasive. Current non-invasive techniques such as computed tomography (CT) protocols have shown limited reproducibility. We present a case of a 77-year-old man with suspected ECAC who underwent evaluation with two different expiratory CT protocols. The initial standard end-expiratory CT could not detect airway collapsibility. However, dynamic bronchoscopy detected severe ECAC. Afterwards, we implemented a novel CT protocol, called dynamic forced expiratory CT (cinematic), comprising detailed, consecutive helical imaging of the central airway throughout the entire respiratory cycle, detecting severe ECAC, as proven by the earlier dynamic bronchoscopy. We hypothesize this may reduce the risks and need for performing multiple invasive procedures such as dynamic bronchoscopy. Extensive studies are required to evaluate the feasibility of its implementation for diagnosing ECAC.Airway management of patients with difficult airways is a challenge to the anesthesiologists and awake tracheal intubation is the recommended strategy. Successful fiberoptic-guided tracheal intubation under precise anesthesia and topicalization with spontaneous respiration preservation was achieved in an uncooperative patient with severe postburn mentosternal contracture scheduled for release of contracture.Crystal-storing histiocytosis and Bing-Neel syndrome are two diseases induced by paraproteins. Herein, we report a rare case of crystal-storing histiocytosis associated with Bing-Neel-like neurological manifestations in the context of a small B-cell lymphoma with plasmacytic differentiation, presumed to be a marginal zone lymphoma.Coronavirus disease (COVID-19) is an infectious disease. In this study, we report a 28-year-old pregnant woman who had a postpartum seizure with a background of HELLP syndrome and a proven COVID-19 infection. Her child survived, and at 12-week postpartum, all maternal COVID-19-related symptoms vanished, and she was cured.COVID-19 has been linked to a number of cutaneous symptoms in COVID-19 patients. Although herpes zoster (HZ) was the first sign of COVID-19 infection in several patients, cases of HZ after COVID-19 vaccination are rare. Here, we report a case of 51-year-old male patient with herpes zoster after Sinopharm (Vero cell) vaccination.We present a 33-year-old female patient with Nicolau syndrome (NS) who received one injection of benzathine penicillin and one injection of betamethasone to the right buttock, and one injection of benzathine penicillin to the left. NS was seen only in the left buttock, where it was intramuscularly injected with penicillin benzathine alone.[This corrects the article DOI 10.1002/ccr3.5140.].An endoleak is a complication that can occur after an endovascular aneurysm repair. We report a rare case of ischemic lumbosacral plexopathy post embolization of type 2 endoleak, including its presentation, neurological progress, rehabilitation strategy and functional outcome.Waldenström macroglobulinemia (WM)/lymphoplasmacytic lymphoma (LPL) is often differentiated from myeloma based on the presence of lytic bone lesions (LBL). However, WM/LPL can present with LBL, and management is poorly understood. We describe a case of an 81-year-old woman with LPL who presented with LBL and was successfully treated with chemoimmunotherapy.Calcium-channel blockers (CCBs) are widely used in people and animals. Overdose can result in cardiovascular collapse and death. Hyperinsulinemia/euglycemia therapy (HIET) and intralipid therapy (ILT) are reported treatment options in people. This is the first report describing HIET and ILT as treatments for amlodipine toxicosis in a cat.We present the case of a 60-year-old man with non-specific abdominal pain. We explore how communication between doctor and patient was challenged by a language barrier. We also consider how the ability to take an accurate clinical history differed between Google Translate and an accredited medical phone translation service.Hypothyroidism causing rhabdomyolysis is a known but an uncommon entity. Hashimoto's thyroiditis causing rhabdomyolysis in the absence of precipitating factors is even rarer. Here, we report a 42-year-old previously healthy man with hypothyroidism due to Hashimoto's thyroiditis complicated by severe rhabdomyolysis and acute kidney injury in the absence of precipitating factors. The diagnosis was based on his clinical presentation and laboratory investigations, and he was successfully treated with intravenous fluid therapy and oral levothyroxine.We report the third case of cutaneous lichen planus (LP) following COVID-19 BNT162b2 vaccination in a 59-year-old woman with previous LP. The reactivation of LP in patients with dormant LP suggests a possible vaccine-induced immune dysregulation. We suggest that the already described vaccine-induced upregulation of Th1 response may play a relevant role in LP reactivation, through an increase in inflammatory cytokines involved in the pathogenesis of LP. Interestingly, LP has already been associated with vaccinations and viral infections including COVID-19 disease. However, the exact mechanism underlying LP (re)activation after Pfizer-BiotNtech COVID-19 vaccination is still widely unknown and needs to be further investigated.

Bile reflux gastropathy is caused by the backward flow of duodenal fluid into the stomach. A retrospective cohort study was performed to declare if the therapeutic biliary interventions cause bile reflux gastropathy, and to estimate its prevalence and risk factors, and to evaluate the gastric mucosa endoscopic and histopathologic changes.

62 patients, with epigastric pain and/or dyspeptic symptoms, were grouped into,

(34) patients that had undergone cholecystectomy and

(28) patients who had undergone at least one of the following procedures for the treatment of benign pathology endoscopic sphincterotomy and endoscopic stenting. Their ages ranged from 27 to 59 years. All participants had undergone gastroscopy for gastric aspirate analysis as well as gastric mucosa biopsy for histopathological examination.

the prevalence of bile reflux gastropathy was (21.34%) after therapeutic biliary interventions with a

-value of 0.000. Entinostat in vitro In both groups, diabetes, obesity, increased gastric bilirubin, and increased gastric pH were risk factors for bile reflux gastropathy

, while age, sex, epigastric pain, heartburn, vomiting were mot.