204 results match your criteria entrapment respiratory


Calycosin-loaded nanoliposomes as potential nanoplatforms for treatment of diabetic nephropathy through regulation of mitochondrial respiratory function.

J Nanobiotechnology 2021 Jun 13;19(1):178. Epub 2021 Jun 13.

Department of Nephrology, The First Hospital Affiliated To Jinan University, NO.613, Huangpu Avenue West, Guangzhou, 510150, China.

Backgrounds: One of the most common complications in diabetic nephropathy is generation of high levels of ROS which can be regulated by herbal antioxidants. However, polyphenols like calycosin, the bioactive compound of Radix astragali suffer from low solubility and poor bioavailability.

Methods: Therefore, in the present study, calycosin-loaded nanoliposomes were fabricated and characterized by TEM, DLS and FTIR techniques. Read More

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Formulation of a Composite Nasal Spray Enabling Enhanced Surface Coverage and Prophylaxis of SARS-COV-2.

Adv Mater 2021 May 31:e2008304. Epub 2021 May 31.

Healthcare Technology Institute, School of Chemical Engineering, University of Birmingham, Birmingham, B15 2TT, UK.

Airborne pathogens pose high risks in terms of both contraction and transmission within the respiratory pathways, particularly the nasal region. However, there is little in the way of adequate intervention that can protect an individual or prevent further spread. This study reports on a nasal formulation with the capacity to combat such challenges, focusing on severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Read More

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Enhanced alveo pulmonary deposition of nebulized ciclesonide for attenuating airways inflammations: a strategy to overcome metered dose inhaler drawbacks.

Drug Deliv 2021 Dec;28(1):826-843

Department of Biochemistry, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Cairo, Egypt.

Ciclesonide (CIC), an inhaled corticosteroid for bronchial asthma is currently available as metered dose inhaler (CIC-MDI) which possesses a major challenge in the management of the elderly, critically ill patients and children. In this work, nebulized CIC nano-structure lipid particles (CIC-NLPs) were prepared and evaluated for their deep pulmonary delivery and cytotoxicity to provide additional clinical benefits to patients in controlled manner and lower dose. The bio-efficacy following nebulization in ovalbumin (OVA) induced asthma Balb/c mice compared to commercial (CIC-MDI) was also assessed. Read More

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December 2021

SARS-CoV-2 ORF6 Disrupts Bidirectional Nucleocytoplasmic Transport through Interactions with Rae1 and Nup98.

mBio 2021 04 13;12(2). Epub 2021 Apr 13.

Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA

RNA viruses that replicate in the cytoplasm often disrupt nucleocytoplasmic transport to preferentially translate their own transcripts and prevent host antiviral responses. The accessory protein ORF6 has previously been shown to be a major inhibitor of interferon production in both severe acute respiratory syndrome coronavirus (SARS-CoV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here, we show SARS-CoV-2-infected cells display an elevated level of nuclear mRNA accumulation compared to mock-infected cells. Read More

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Neuraminidase B controls neuraminidase A-dependent mucus production and evasion.

PLoS Pathog 2021 Apr 5;17(4):e1009158. Epub 2021 Apr 5.

Department of Microbiology, New York University School of Medicine, New York, New York, United States of America.

Binding of Streptococcus pneumoniae (Spn) to nasal mucus leads to entrapment and clearance via mucociliary activity during colonization. To identify Spn factors allowing for evasion of mucus binding, we used a solid-phase adherence assay with immobilized mucus of human and murine origin. Spn bound large mucus particles through interactions with carbohydrate moieties. Read More

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Mucociliary Respiratory Epithelium Integrity in Molecular Defense and Susceptibility to Pulmonary Viral Infections.

Biology (Basel) 2021 Jan 29;10(2). Epub 2021 Jan 29.

Laboratory of Optobiology, School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India.

Mucociliary defense, mediated by the ciliated and goblet cells, is fundamental to respiratory fitness. The concerted action of ciliary movement on the respiratory epithelial surface and the pathogen entrapment function of mucus help to maintain healthy airways. Consequently, genetic or acquired defects in lung defense elicit respiratory diseases and secondary microbial infections that inflict damage on pulmonary function and may even be fatal. Read More

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January 2021

[Meralgia paresthetica after prolonged prone position at the intensive care unit among COVID-19 patients. A case report].

Lakartidningen 2021 02 3;118. Epub 2021 Feb 3.

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Meralgia paresthetica (MP) is an entrapment syndrome that may cause loss of sensation, numbness, paresthesia and pain within the distribution of the lateral femoral cutaneous nerve. This condition is more common in persons with diabetes mellitus, obesity and in old age. MP has previously been described in patients that have undergone surgery in the prone position (PP) and in a case report of a patient with ARDS (Acute Respiratory Distress Syndrome) who was cared for in the intensive care unit (ICU). Read More

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February 2021

Meralgia Paraesthetica after Prone Position Ventilation in a Patient with COVID-19.

Eur J Case Rep Intern Med 2020 16;7(12):002039. Epub 2020 Nov 16.

Department of Neuroscience (DINOGMI), University of Genoa, Genova, Italy.

Background And Objectives: One of the most feared complications of COVID-19 is respiratory failure caused by acute respiratory distress syndrome. In order to improve oxygenation and survival, patients admitted to intensive care units and intubated may undergo prone position mechanical ventilation. Prolonged prone positioning may cause meralgia paraesthetica due to lateral femoral cutaneous nerve entrapment between the inguinal ligament and the anterior superior iliac spine. Read More

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November 2020

Spatiotemporal accumulation of fatal pharyngeal entrapment of flatfish in harbour porpoises () in the German North Sea.

PeerJ 2020 20;8:e10160. Epub 2020 Oct 20.

Institute for Terrestrial and Aquatic Wildlife Research (ITAW), University of Veterinary Medicine Hannover, Foundation, Büsum, Germany.

The evolution of a permanent separation of the upper respiratory and digestive tract is one of the adaptions cetaceans evolved for their aquatic life. Generally, it prevents odontocetes from choking on either saltwater or foreign bodies during ingestion under water. Nevertheless, several sporadic single case reports from different parts of the world show that this separation can be reversed especially by overly large items of prey. Read More

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October 2020

Negative Food Effect of Danirixin: Use of PBPK Modelling to Explore the Effect of Formulation and Meal Type on Clinical PK.

Pharm Res 2020 Oct 29;37(12):233. Epub 2020 Oct 29.

Clinical Pharmacology and Modelling Simulation, GlaxoSmithKline R&D, 980 Great West Road, TW8 9GS, Brentford, UK.

Purpose: To use physiologically-based pharmacokinetic (PBPK) modelling to explore the food effect of different DNX hydrobromide (HBr) hemihydrate salt tablet formulations using biorelevant dissolution.

Methods: Compendial dissolution using a paddle method and TIM-1 biorelevant dissolution were performed and incorporated into a previously reported PBPK model. A two-part clinical study evaluated tablet formulations in the fasted/fed (high fat) state (Part A), and the impact of food (fasted/normal/high fat) and Proton Pump Inhibitor (PPI) co-administration for a selected formulation; as well as a formulation containing DNX HBr in the monohydrate state (Part B). Read More

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October 2020

Safety and Efficacy of Imatinib for Hospitalized Adults with COVID-19: A structured summary of a study protocol for a randomised controlled trial.

Trials 2020 Oct 28;21(1):897. Epub 2020 Oct 28.

University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, 22 South Greene Street, Room N9E06, Baltimore, Maryland, 21201, USA.

Objectives: Primary Objective: To evaluate the efficacy and safety of oral administration of imatinib combined with the Best Conventional Care (BCC) versus placebo plus BCC in hospitalized patients with COVID-19.

Hypothesis: Addition of imatinib to the BCC will provide a superior clinical outcome for patients with COVID-19 compared with BCC plus placebo. This hypothesis is on the basis of 1) intralysosomal entrapment of imatinib will increase endosomal pH and effectively decrease SARS-CoV-2/cell fusion, 2) kinase inhibitory activity of imatinib will interfere with budding/release or replication of SARS-CoV-2, and 3) because of the critical role of mechanical ventilation in the care of patients with ARDS, imatinib will have a significant clinical impact for patients with critical COVID-19 infection in Intensive Care Unit (ICU). Read More

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October 2020

Maxillary surgical ciliated cysts following advancement Le Fort I osteotomy with concomitant autogenous bone grafting: a simple coincidence or a cause-effect relationship?

J Stomatol Oral Maxillofac Surg 2020 Oct 20. Epub 2020 Oct 20.

Unit of Oral Medicine and Oral and Maxillofacial Pathology, Division of Oral and Maxillofacial Surgery, Department of Surgery, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland. Electronic address:

Surgical ciliated cysts (SCCs) are rare benign lesions that have been described after radical maxillary sinus surgery such as a Caldwell-Luc procedure for chronic sinusitis. They usually occur several years following surgery, and they typically present as an evolving swelling in the maxillary sulcus and cheek area. The pathogenetic mechanism is related to the entrapment of respiratory epithelium from the paranasal sinuses and/or the nose within the wound created by the surgical procedures. Read More

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October 2020

In vitro and ex vivo anti-diabetic and anti-hyperglycemic properties of Zataria multiflora essential oil.

Mol Biol Rep 2020 Oct 1;47(10):7805-7813. Epub 2020 Oct 1.

Michael Cuccione Childhood Cancer Research Program, British Columbia Children's Hospital, University of British Columbia, Vancouver, BC, Canada.

The underlying mechanism involved in the onset of many diseases such as diabetes is oxidative stress. Zataria multiflora has a very high antioxidant power that can be used in the antioxidant therapy of the diabetes symptom. The in vitro antioxidant and anti-diabetic capacity of Zataria multiflora essential oil (ZMEO) incorporated in dendrosome against glucose oxidation, lipid oxidation, protein oxidation, and protein glycation was analyzed. Read More

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October 2020

Drug nanodelivery systems based on natural polysaccharides against different diseases.

Adv Colloid Interface Sci 2020 Oct 1;284:102251. Epub 2020 Sep 1.

National Institute of Food Science and Technology, Faculty of Food Nutrition and Home Sciences, University of Agriculture, Faisalabad 38000, Pakistan.

Drug nanodelivery systems (DNDSs) are fascinated cargos to achieve outstanding therapeutic results of various drugs or natural bioactive compounds owing to their unique structures. The efficiency of several pharmaceutical drugs or natural bioactive ingredients is restricted because of their week bioavailability, poor bioaccessibility and pharmacokinetics after orally pathways. In order to handle such constraints, usage of native/natural polysaccharides (NPLS) in fabrication of DNDSs has gained more popularity in the arena of nanotechnology for controlled drug delivery to enhance safety, biocompatibility, better retention time, bioavailability, lower toxicity and enhanced permeability. Read More

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October 2020

Post-stroke complex regional pain syndrome and related factors: Experiences from a tertiary rehabilitation center.

J Stroke Cerebrovasc Dis 2020 Sep 3;29(9):104995. Epub 2020 Jul 3.

Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Türkocağı street No:3, Sıhhiye, Ankara, Turkey.

Objective: In this study, it is aimed to determine the risk factors associated with CRPS after stroke and the clinical parameters of the patients and the treatment agents used for CPRS METHOD: 213 hemiplegic patients with CRPS diagnosed in Group 1 and 213 hemiplegic patients without CRPS in group 2 (control group) were included in the study designed retrospectively. Demographic data of the patients, Brunnstrom stage, Modified Ashworth scale, Barthel index were recorded from patients files. Associated risk faktors with CRPS such as Shoulder subluxation, adhesive capsulitis, fracture, deep vein thrombosis, spasticity, neglect, visual field defect, heterotopic ossification, entrapment neuropathies, brachial plexus damage, pressure wound, lower respiratory tract infection (LRTI), urinary tract infection, epilepsy, and depression were questioned. Read More

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September 2020

Mucinous Adenomyomatous Pulmonary Hamartoma: Clinicopathologic, Immunohistochemical, and Molecular Features of 6 Cases.

Int J Surg Pathol 2021 May 27;29(3):273-280. Epub 2020 Jul 27.

Mayo Clinic Arizona, Scottsdale, AZ, USA.

Pulmonary hamartoma (PH) may show various combinations of mesenchymal tissues with entrapment of respiratory epithelium. An uncommon variant of PH prevalently consisting of smooth muscle with mucinous proliferation has been reported in literature under several definitions as sporadic reports. We collected a series of 6 leiomyomatous PH associated with mucinous growth from consultation files (3 cases) and multicentric revision of archival files among 128 consecutive surgically resected PH. Read More

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Surfactant-based prophylaxis and therapy against COVID-19: A possibility.

Med Hypotheses 2020 Oct 7;143:110081. Epub 2020 Jul 7.

Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Sri Shivarathreshwara Nagar, Bannimantap, Mysuru 570015, Karnataka, India.

Hand hygiene by washing with soap and water is recommended for the prevention of COVID-19 spread. Soaps and detergents are explained to act by damaging viral spike glycoproteins (peplomers) or by washing out the virus through entrapment in the micelles. Technically, soaps come under a functional category of molecules known as surfactants. Read More

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October 2020

Improved Antitumor Outcomes for Colon Cancer Using Nanomicelles Loaded with the Novel Antitumor Agent LA67.

Int J Nanomedicine 2020 19;15:3563-3576. Epub 2020 May 19.

Department of Respiratory Medicine, Yanbian University Hospital, Yanji 133000, Jilin, People's Republic of China.

Background: LA67 is a derivative of triptolide that exhibits strong antitumor activity. This derivative has a better safety profile than triptolide, but is limited by poor aqueous solubility.

Aim And Methods: To improve solubility and further increase therapeutic efficacy, we prepared LA67-loaded polymeric micelles (LA67-PMs) using a film hydration method. Read More

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Thoracoscopy and talc poudrage compared with intercostal drainage and talc slurry infusion to manage malignant pleural effusion: the TAPPS RCT.

Health Technol Assess 2020 06;24(26):1-90

Academic Respiratory Unit, University of Bristol, Bristol, UK.

Background: There are around 40,000 new cases of malignant pleural effusion in the UK each year. Insertion of talc slurry via a chest tube is the current standard treatment in the UK. However, some centres prefer local anaesthetic thoracoscopy and talc poudrage. Read More

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Spontaneous rupture of an unscarred uterus with an intact amniotic sac extrusion and fetal leg entrapment at 28 gestational weeks: a case report.

Gland Surg 2020 Apr;9(2):459-462

Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun 130041, China.

The spontaneous rupture of an unscarred uterus at 28 gestational weeks is an extremely rare event, particularly when associated with an intact amniotic sac extrusion and fetal leg entrapment, which has not been previously reported. A 27-year-old primigravid woman was referred to our department, due to perpetual abdominal pain, at 28 weeks and 5 days of gestation. The patient, G3p0, had previously undergone two induced abortions. Read More

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Cationic Polylactic Acid-Based Nanoparticles Improve BSA-FITC Transport Across M Cells and Engulfment by Porcine Alveolar Macrophages.

AAPS PharmSciTech 2020 May 15;21(4):134. Epub 2020 May 15.

Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand.

This work described the development of a cationic polylactic acid (PLA)-based nanoparticles (NPs) as an antigen delivery system using dimethyldioctadecylammonium bromide (DDA) to facilitate the engulfment of BSA-FITC by porcine alveolar macrophages (3D4/2 cells) and heat-labile enterotoxin subunit B (LTB) to enhance the transport of BSA-FITC across M cells. The experimental design methodology was employed to study the influence of PLA, polyvinyl alcohol (PVA), DDA, and LTB on the physical properties of the PLA-based NPs. The size of selected cationic PLA NPs comprising 5% PLA, 5% PVA, and 0. Read More

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Manometry performed at indwelling pleural catheter insertion to predict unexpandable lung.

J Thorac Dis 2020 Apr;12(4):1374-1384

Academic Respiratory Unit, University of Bristol, Bristol, UK.

Background: The finding of unexpandable lung (UL) at an early timepoint is of increasing importance in guiding treatment decisions in patients with malignant pleural effusion (MPE). Pleural manometry is the most common technique to delineate UL, however it has never been measured via an indwelling pleural catheter (IPC). To further the evidence base we analysed all patients in the IPC-PLUS study who had manometry performed during IPC insertion for the ability to predict substantial UL using manometry. Read More

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Effect of the CXCR4 antagonist plerixafor on endogenous neutrophil dynamics in the bone marrow, lung and spleen.

J Leukoc Biol 2020 06 6;107(6):1175-1185. Epub 2020 May 6.

Department of Medicine, National Heart and Lung Institute (NHLI), Imperial College, London, UK.

Treatment with the CXCR4 antagonist, plerixafor (AMD3100), has been proposed for clinical use in patients with WHIM (warts, hypogammaglobulinemia, infections, and myelokathexis) syndrome and in pulmonary fibrosis. However, there is controversy with respect to the impact of plerixafor on neutrophil dynamics in the lung, which may affect its safety profile. In this study, we investigated the kinetics of endogenous neutrophils by direct imaging, using confocal intravital microscopy in mouse bone marrow, spleen, and lungs. Read More

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Prominent entrapment of respiratory epithelium in primary and metastatic intrapulmonary non-epithelial neoplasms: a frequent morphological pattern closely mimicking adenofibroma and other biphasic pulmonary lesions.

Virchows Arch 2020 Aug 19;477(2):195-205. Epub 2020 Mar 19.

Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), University Hospital, Krankenhausstrasse 8-10, 91054, Erlangen, Germany.

As one of the most common target organs for hematogenous spread from diverse cancers, biopsy interpretation of lung tumors is complicated by the challenging question of primary versus metastatic and by frequent entrapment of native respiratory glands. Nevertheless, the literature dealing with this issue is surprisingly sparse and no single study has been devoted to this topic. We reviewed 47 surgical lung specimens of non-epithelial neoplasms (38 metastases, mainly from sarcomas and 9 primary lesions) for frequency and pattern of intralesional epithelial entrapment. Read More

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Biomedical grafts for tracheal tissue repairing and regeneration "Tracheal tissue engineering: an overview".

J Tissue Eng Regen Med 2020 05 19;14(5):653-672. Epub 2020 Mar 19.

Department of Biotechnology, School of Applied and Life Sciences, Uttaranchal University, Dehradun, India.

Airway system is a vital part of the living being body. Trachea is the upper respiratory portion that connects nostril and lungs and has multiple functions such as breathing and entrapment of dust/pathogen particles. Tracheal reconstruction by artificial prosthesis, stents, and grafts are performed clinically for the repairing of damaged tissue. Read More

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Prevention of Local Tumor Recurrence After Surgery by Thermosensitive Gel-Based Chemophotothermal Therapy in Mice.

Lasers Surg Med 2020 09 18;52(7):682-691. Epub 2019 Dec 18.

Physical Examination Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, P. R. China.

Background And Objectives: Local recurrence of cancer after surgery has long been a tough problem. In the present study, thermosensitive gel-based chemophotothermal therapy was applied to prevent the recurrence of liver cancer after surgery.

Study Design/materials And Methods: Mesoporous silica nanoparticles (MSNs) were used as first-level carrier to co-load doxorubicin (DOX) and ICG. Read More

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September 2020

Immune exclusion by naturally acquired secretory IgA against pneumococcal pilus-1.

J Clin Invest 2020 02;130(2):927-941

Successful infection by mucosal pathogens requires overcoming the mucus barrier. To better understand this key step, we performed a survey of the interactions between human respiratory mucus and the human pathogen Streptococcus pneumoniae. Pneumococcal adherence to adult human nasal fluid was seen only by isolates expressing pilus-1. Read More

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February 2020

High Potency of SN-38-Loaded Bovine Serum Albumin Nanoparticles Against Triple-Negative Breast Cancer.

Pharmaceutics 2019 Nov 1;11(11). Epub 2019 Nov 1.

School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.

Triple-negative breast cancer (TNBC) is an aggressive type of breast cancer with a worse prognosis than other types. There are currently no specific approved treatments for TNBC. Albumin is a promising biomimetic material that may be fabricated into nanoparticles to possibly exert passive effects on targeted tumors. Read More

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November 2019

Successful Treatment of Pneumothorax in a Dog With Sterile Pleural Fibrosis Caused by Chylothorax.

Front Vet Sci 2019 22;6:278. Epub 2019 Aug 22.

Clinic for Small Animals, Freie Universität, Berlin, Germany.

A 2-year-old, 12 kg, intact male crossbreed dog was presented with respiratory distress, exercise intolerance, and gagging. Plain thoracic radiographs revealed severe pleural effusion. Although bilateral needle thoracocentesis and chest tube placement were performed, no re-expansion of the lung lobes occurred. Read More

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The Relationship of Pleural Manometry With Postthoracentesis Chest Radiographic Findings in Malignant Pleural Effusion.

Chest 2020 02 28;157(2):421-426. Epub 2019 Aug 28.

Department of Medicine, Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Medical University of South Carolina, Charleston, SC.

Background: Both elevated pleural elastance (E-P) and radiographic evidence of incomplete lung expansion following thoracentesis have been used to exclude patients with a malignant pleural effusion (MPE) from undergoing pleurodesis. This article reports on a cohort of patients with MPE in whom complete drainage was attempted with pleural manometry to determine the frequency of E-P and its relation with postthoracentesis radiographic findings.

Methods: Seventy consecutive patients with MPE who underwent therapeutic pleural drainage with pleural manometry were identified. Read More

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February 2020