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Yang X, Xiao W, Le Q, Zhang Z, Wang W, Lee SH, Dighe A, Kerrigan JR, Cui Q. Knockout of formyl peptide receptor 1 reduces osteogenesis and bone healing. Life Sci 2024; 344:122583. [PMID: 38508232 DOI: 10.1016/j.lfs.2024.122583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 03/09/2024] [Accepted: 03/18/2024] [Indexed: 03/22/2024]
Abstract
AIMS Formyl peptide receptor 1 (FPR1), from a G-protein coupled receptor family, was previously well-characterized in immune cells. But the function of FPR1 in osteogenesis and fracture healing was rarely reported. This study, using the FPR1 knockout (KO) mouse, is one of the first studies that try to investigate FPR1 function to osteogenic differentiation of bone marrow-derived stem cells (BMSCs) in vitro and bone fracture healing in vivo. MATERIALS AND METHODS Primary BMSCs were isolated from both FPR1 KO and wild type (WT) mice. Cloned mouse BMSCs (D1 cells) were used to examine role of FoxO1 in FPR1 regulation of osteogenesis. A closed, transverse fracture at the femoral midshaft was created to compare bone healing between KO and WT mice. Biomechanical and structural properties of femur were compared between healthy WT and KO mice. KEY FINDINGS FPR1 expression increased significantly during osteogenesis of both primary and cloned BMSCs. Compared to BMSCs from FPR1 KO mice, WT BMSCs displayed considerably higher levels of osteogenic markers as well as mineralization. Osteogenesis by D1 cells was inhibited by either an FPR1 antagonist cFLFLF or a specific inhibitor of FoxO1, AS1842856. In addition, the femur from WT mice had better biomechanical properties than FPR1 KO mice. Furthermore, bone healing in WT mice was remarkably improved compared to FPR1 KO mice analyzed by X-ray and micro-CT. SIGNIFICANCE These findings indicated that FPR1 played a vital role in osteogenic differentiation and regenerative capacity of fractured bone, probably through the activation of FoxO1 related signaling pathways.
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Affiliation(s)
- Xinlin Yang
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
| | - Wan'an Xiao
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA; Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Quang Le
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
| | - Zhichang Zhang
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA; Dept of Orthopaedic Surgery, The First Affiliated Hospital of Xinxiang Medical University, Wehui 453100, Henan, China
| | - Weicheng Wang
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
| | - Sang-Hyun Lee
- Dept of Mechanical & Aerospace Engineering, Center for Applied Biomechanics, University of Virginia, Charlottesville, VA, USA
| | - Abhijit Dighe
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
| | - Jason R Kerrigan
- Dept of Mechanical & Aerospace Engineering, Center for Applied Biomechanics, University of Virginia, Charlottesville, VA, USA
| | - Quanjun Cui
- Dept of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA.
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Rüschoff J, Kumar G, Badve S, Jasani B, Krause E, Rioux-Leclercq N, Rojo F, Martini M, Cheng L, Tretiakova M, Mitchell C, Anders RA, Robert ME, Fahy D, Pyle M, Le Q, Yu L, Glass B, Baxi V, Babadjanova Z, Pratt J, Brutus S, Karasarides M, Hartmann A. Scoring PD-L1 Expression in Urothelial Carcinoma: An International Multi-Institutional Study on Comparison of Manual and Artificial Intelligence Measurement Model (AIM-PD-L1) Pathology Assessments. Virchows Arch 2024; 484:597-608. [PMID: 38570364 DOI: 10.1007/s00428-024-03795-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/05/2024]
Abstract
Assessing programmed death ligand 1 (PD-L1) expression on tumor cells (TCs) using Food and Drug Administration-approved, validated immunoassays can guide the use of immune checkpoint inhibitor (ICI) therapy in cancer treatment. However, substantial interobserver variability has been reported using these immunoassays. Artificial intelligence (AI) has the potential to accurately measure biomarker expression in tissue samples, but its reliability and comparability to standard manual scoring remain to be evaluated. This multinational study sought to compare the %TC scoring of PD-L1 expression in advanced urothelial carcinoma, assessed by either an AI Measurement Model (AIM-PD-L1) or expert pathologists. The concordance among pathologists and between pathologists and AIM-PD-L1 was determined. The positivity rate of ≥ 1%TC PD-L1 was between 20-30% for 8/10 pathologists, and the degree of agreement and scoring distribution for among pathologists and between pathologists and AIM-PD-L1 was similar both scored as a continuous variable or using the pre-defined cutoff. Numerically higher score variation was observed with the 22C3 assay than with the 28-8 assay. A 2-h training module on the 28-8 assay did not significantly impact manual assessment. Cases exhibiting significantly higher variability in the assessment of PD-L1 expression (mean absolute deviation > 10) were found to have patterns of PD-L1 staining that were more challenging to interpret. An improved understanding of sources of manual scoring variability can be applied to PD-L1 expression analysis in the clinical setting. In the future, the application of AI algorithms could serve as a valuable reference guide for pathologists while scoring PD-L1.
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Affiliation(s)
- Josef Rüschoff
- Discovery Life Sciences and Pathology Nordhessen, Kassel, Germany.
| | | | - Sunil Badve
- Emory University School of Medicine, Atlanta, GA, USA
| | - Bharat Jasani
- Discovery Life Sciences and Pathology Nordhessen, Kassel, Germany
- University of Cardiff, Cardiff, Wales, UK
| | | | | | - Federico Rojo
- IIS-Fundacion Jimenez Diaz CIBERONC (Madrid), Madrid, Spain
| | | | - Liang Cheng
- Brown University Warren Alpert Medical School and the Legorreta Cancer Center at Brown University, Providence, RI, USA
| | | | | | | | | | | | | | | | | | | | - Vipul Baxi
- Bristol Myers Squibb, Princeton, NJ, USA
| | | | | | | | | | - Arndt Hartmann
- Comprehensive Cancer Center EMN, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany.
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3
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Khalid MB, Zektser E, Chu E, Li M, Utoh J, Ryan P, Loving HS, Harb R, Kattappuram R, Chatman L, Hartono S, Claudio-Etienne E, Sun G, Feener EP, Li Z, Lai SK, Le Q, Schwartz LB, Lyons JJ, Komarow H, Zhou ZH, Raza H, Pao M, Laky K, Holland SM, Brittain E, Frischmeyer-Guerrerio PA. A randomized double-blinded trial to assess recurrence of systemic allergic reactions following COVID-19 mRNA vaccination. J Allergy Clin Immunol 2024:S0091-6749(24)00236-7. [PMID: 38460680 DOI: 10.1016/j.jaci.2024.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/09/2024] [Accepted: 03/05/2024] [Indexed: 03/11/2024]
Abstract
BACKGROUND Systemic allergic reactions (sARs) following coronavirus disease 2019 (COVID-19) mRNA vaccines were initially reported at a higher rate than after traditional vaccines. OBJECTIVE We aimed to evaluate the safety of revaccination in these individuals and to interrogate mechanisms underlying these reactions. METHODS In this randomized, double-blinded, phase 2 trial, participants aged 16 to 69 years who previously reported a convincing sAR to their first dose of COVID-19 mRNA vaccine were randomly assigned to receive a second dose of BNT162b2 (Comirnaty) vaccine and placebo on consecutive days in a blinded, 1:1 crossover fashion at the National Institutes of Health. An open-label BNT162b2 booster was offered 5 months later if the second dose did not result in severe sAR. None of the participants received the mRNA-1273 (Spikevax) vaccine during the study. The primary end point was recurrence of sAR following second dose and booster vaccination; exploratory end points included biomarker measurements. RESULTS Of 111 screened participants, 18 were randomly assigned to receive study interventions. Eight received BNT162b2 second dose followed by placebo; 8 received placebo followed by BNT162b2 second dose; 2 withdrew before receiving any study intervention. All 16 participants received the booster dose. Following second dose and booster vaccination, sARs recurred in 2 participants (12.5%; 95% CI, 1.6 to 38.3). No sAR occurred after placebo. An anaphylaxis mimic, immunization stress-related response (ISRR), occurred more commonly than sARs following both vaccine and placebo and was associated with higher predose anxiety scores, paresthesias, and distinct vital sign and biomarker changes. CONCLUSIONS Our findings support revaccination of individuals who report sARs to COVID-19 mRNA vaccines. Distinct clinical and laboratory features may distinguish sARs from ISRRs.
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Affiliation(s)
- Muhammad B Khalid
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Ellen Zektser
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Eric Chu
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research, Frederick, Md
| | - Min Li
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Joanna Utoh
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Patrick Ryan
- Office of the Clinical Director, National Institute of Mental Health, National Institutes of Health, Bethesda, Md
| | - Hanna S Loving
- Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Roa Harb
- Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Robbie Kattappuram
- Investigational Drug Management and Research Section, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Lindsay Chatman
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Stella Hartono
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Estefania Claudio-Etienne
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Guangping Sun
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | | | - Zhongbo Li
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina Chapel Hill, Chapel Hill, NC
| | - Samuel K Lai
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina Chapel Hill, Chapel Hill, NC
| | - Quang Le
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Jonathan J Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh Komarow
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Zhao-Hua Zhou
- Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Md
| | - Haniya Raza
- Office of the Clinical Director, National Institute of Mental Health, National Institutes of Health, Bethesda, Md
| | - Maryland Pao
- Office of the Clinical Director, National Institute of Mental Health, National Institutes of Health, Bethesda, Md
| | - Karen Laky
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Steven M Holland
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Erica Brittain
- Biostatistics Research Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Pamela A Frischmeyer-Guerrerio
- Food Allergy Research Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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4
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Le Q, Bhandari A, Fleischer J, Murthy A. Spontaneous Coronary Artery Dissection and Fibromuscular Dysplasia: A Case Series and Genetic Links. Cureus 2024; 16:e54105. [PMID: 38487126 PMCID: PMC10938269 DOI: 10.7759/cureus.54105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2024] [Indexed: 03/17/2024] Open
Abstract
Spontaneous coronary artery dissection (SCAD) is a rare cause of myocardial infarction in young women. An association of fibromuscular dysplasia (FMD) with SCAD has been well established; a significant proportion of SCAD patients may have typical FMD findings in other noncoronary arteries. The current consensus recommends arterial imaging screening from head to pelvis using computed tomography angiography (CTA) or magnetic resonance angiography (MRA) in SCAD. Genetic testing for FMD should be considered in high-risk cases. We present two cases of SCAD associated with FMD and discuss the significance of genetic screening in such patients.
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Affiliation(s)
- Quang Le
- Hospital Medicine, University of Missouri School of Medicine, Columbia, USA
| | - Amit Bhandari
- Internal Medicine, St. John's Hospital, Springfield, USA
| | - Julie Fleischer
- Pediatrics, Southern Illinois University School of Medicine, Springfield, USA
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5
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Ratziu V, Francque S, Behling CA, Cejvanovic V, Cortez-Pinto H, Iyer JS, Krarup N, Le Q, Sejling AS, Tiniakos D, Harrison SA. Artificial intelligence scoring of liver biopsies in a phase II trial of semaglutide in nonalcoholic steatohepatitis. Hepatology 2023:01515467-990000000-00692. [PMID: 38112484 DOI: 10.1097/hep.0000000000000723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 12/03/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND AND AIMS Artificial intelligence-powered digital pathology offers the potential to quantify histological findings in a reproducible way. This analysis compares the evaluation of histological features of NASH between pathologists and a machine-learning (ML) pathology model. APPROACH AND RESULTS This post hoc analysis included data from a subset of patients (n=251) with biopsy-confirmed NASH and fibrosis stage F1-F3 from a 72-week randomized placebo-controlled trial of once-daily subcutaneous semaglutide 0.1, 0.2, or 0.4 mg (NCT02970942). Biopsies at baseline and week 72 were read by 2 pathologists. Digitized biopsy slides were evaluated by PathAI's NASH ML models to quantify changes in fibrosis, steatosis, inflammation, and hepatocyte ballooning using categorical assessments and continuous scores. Pathologist and ML-derived categorical assessments detected a significantly greater percentage of patients achieving the primary endpoint of NASH resolution without worsening of fibrosis with semaglutide 0.4 mg versus placebo (pathologist 58.5% vs. 22.0%, p < 0.0001; ML 36.9% vs. 11.9%; p =0.0015). Both methods detected a higher but nonsignificant percentage of patients on semaglutide 0.4 mg versus placebo achieving the secondary endpoint of liver fibrosis improvement without NASH worsening. ML continuous scores detected significant treatment-induced responses in histological features, including a quantitative reduction in fibrosis with semaglutide 0.4 mg versus placebo ( p =0.0099) that could not be detected using pathologist or ML categorical assessment. CONCLUSIONS ML categorical assessments reproduced pathologists' results of histological improvement with semaglutide for steatosis and disease activity. ML-based continuous scores demonstrated an antifibrotic effect not measured by conventional histopathology.
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Affiliation(s)
- Vlad Ratziu
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié Salpêtrière, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Sven Francque
- Antwerp University Hospital, Antwerp, Belgium
- InflaMed Centre of Excellence, Laboratory for Experimental Medicine and Paediatrics, Translational Sciences in Inflammation and Immunology, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium
- European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Antwerp, Belgium
| | | | | | - Helena Cortez-Pinto
- Clínica Universitária de Gastrenterologia, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | | | | | - Quang Le
- PathAI Inc., Boston, Massachusetts, USA
| | | | - Dina Tiniakos
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Department of Pathology, Aretaieion Hospital, National and Kapodistrian University of Athens, Athens, Greece
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6
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Suen A, Pham HT, Suen K, Narayanan S, Song G, Post AB, Mitsuyama P, Wechter D, Le Q, Grumley J, Robinson N, O'Malley M, Lavigne J, Stevens L, Youn V, Yao MS. Intra-Operative Radiotherapy (IORT) in Breast Conserving Therapy in Early-Stage Breast Cancer and DCIS. Int J Radiat Oncol Biol Phys 2023; 117:e209. [PMID: 37784871 DOI: 10.1016/j.ijrobp.2023.06.1096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Initial breast intra-operative radiotherapy (IORT) results in clinical trials were encouraging though with longer follow up, increased local recurrences have been reported compared with whole breast radiation or other partial breast radiation including accelerated partial breast irradiation (APBI) methods. The goal of the study is to report our prospective single institution IORT breast study outcomes of local recurrence (LR) including true recurrence and breast elsewhere failures, breast cancer specific survival (BCSS), and overall survival (OS) with low energy x-ray IORT in early-stage breast cancer or ductal carcinoma in situ. MATERIALS/METHODS A total of 480 patients with early-stage breast cancer or DCIS were prospectively enrolled in an IRB approved single institution trial and treated with low energy X-ray IORT 20 Gy at time of breast-conserving surgery. Eligibility criteria included ≥ 45 years of age with unifocal tumors < 3 cm deemed candidates for partial mastectomy. Supplemental external beam radiation was recommended for patients with high-risk surgical pathology including multifocal disease, positive nodes, close margins < 2 mm, or lymphovascular invasion. Ipsilateral breast tumor recurrences were classified as true recurrence versus elsewhere failure by location and histology: same/different quadrant and similar/different histology. Kaplan-Meier methods were used to estimate survival probabilities across time. RESULTS Median age of enrolled patients was 64 years with the majority of patients having favorable phenotype with 94% ER+ and 93% Her-2 - disease. 110 patients (23%) had supplemental EBRT delivered; 103 to the whole breast and 7 to the breast and regional nodes. At a median follow up of 73 months (range 17 - 131 months), there were 23 (4.8%) ipsilateral breast tumor recurrences, of which 9 were true recurrences (1.9%) and 14 elsewhere failures (2.9%). One patient with true recurrence and 3 patients with elsewhere breast failures synchronously presented with clinical or radiographic regional node involvement. Seven patient developed contralateral breast cancer and 8 patients developed distant metastases during the follow-up period. There were 2 breast cancer related deaths. At 6-years, overall survival rate was 96.8% and breast cancer specific survival was 98.7%. CONCLUSION Our study outcomes reflect similar outcomes as other reported IORT studies with electron or low energy X-ray in breast cancer, with higher risk of local failure than historical whole breast and other partial breast radiation techniques. This supports current radiation society guidelines for IORT monotherapy for breast cancer to be optimally considered in the context of prospective clinical trials.
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Affiliation(s)
- A Suen
- Virginia Mason Medical Center, Seattle, WA
| | - H T Pham
- Virginia Mason Medical Center, Seattle, WA
| | - K Suen
- Virginia Mason Medical Center, Seattle, WA
| | | | - G Song
- Virginia Mason Medical Center, Seattle, WA, United States
| | - A B Post
- Virginia Mason Medical Center, Seattle, WA, United States
| | | | - D Wechter
- Virginia Mason Medical Center, Seattle, WA
| | - Q Le
- Virginia Mason Medical Center, Seattle, WA
| | - J Grumley
- St. John's Cancer Institute, Santa Monica, CA
| | - N Robinson
- Virginia Mason Medical Center, Seattle, WA
| | - M O'Malley
- Virginia Mason Medical Center, Seattle, WA, United States
| | - J Lavigne
- Virginia Mason Medical Center, Seattle, WA
| | - L Stevens
- Virginia Mason Medical Center, Seattle, WA
| | - V Youn
- Virginia Mason Medical Center, Seattle, WA
| | - M S Yao
- Virginia Mason Medical Center, Seattle, WA, United States
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7
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Ngo M, Tang N, Le Q. Presumptive Progressive Multifocal Encephalopathy in an Immunocompetent Patient: A Rare Case Report. Cureus 2023; 15:e46668. [PMID: 37942390 PMCID: PMC10628803 DOI: 10.7759/cureus.46668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2023] [Indexed: 11/10/2023] Open
Abstract
Progressive multifocal encephalopathy (PML) is a rare brain infection caused by the John Cunningham virus (JCV), primarily affecting immunocompromised individuals. This case report presents a unique occurrence of PML in an immunocompetent young man with a history of substance abuse. The patient exhibited progressive neurological symptoms, including weakness and sensory deficits, prompting diagnostic evaluation. Brain imaging and laboratory tests revealed evidence of PML, supported by a positive JCV antibody. Notably, HIV testing was negative. While PML is typically associated with immunosuppression, this case raises questions about potential connections between substance abuse and viral reactivation. The patient received treatment with intravenous methylprednisolone and underwent rehabilitation, emphasizing the challenging nature of PML management. This case highlights the importance of considering PML as a differential diagnosis, even in immunocompetent individuals, and underscores the need for further research into its rare presentations and associated risk factors.
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Affiliation(s)
- Minh Ngo
- Neurology, University of Missouri, Columbia, USA
| | - Ngan Tang
- Neurology, Ho Chi Minh City Stroke Association, Ho Chi Minh, VNM
| | - Quang Le
- Hospital Medicine, University of Missouri School of Medicine, Columbia, USA
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8
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Goit R, Oli PR, Le Q, Bhandari A. Paradoxical Vocal Fold Dysfunction Mimicking Bronchial Asthma in a Young Female Patient. Cureus 2023; 15:e41376. [PMID: 37546109 PMCID: PMC10400364 DOI: 10.7759/cureus.41376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/04/2023] [Indexed: 08/08/2023] Open
Abstract
Inducible laryngeal obstruction (ILO)/paradoxical vocal fold motion (PVFM) is a reversible narrowing of the larynx that results from vocal fold motion dysfunction. Distinguishing ILO from asthma can be challenging, as they can coexist, and standard tests may not be able to differentiate between the two. However, a flexible laryngoscopy can promptly diagnose ILO. Unfortunately, ILO is often overlooked as a potential cause when evaluating patients with sudden-onset breathing difficulties and respiratory distress. We present a case of a young female who sought frequent treatment at the emergency room (ER) with symptoms of shortness of breath (SOB), rapid heart rate, rapid breathing, and anxiety. Despite receiving treatment for acute asthma attacks, her symptoms persisted. During her most recent hospital admission, a flexible laryngoscopy revealed abnormal vocal fold movements, indicating paradoxical vocal fold dysfunction (PVFD) and muscle tension dysphonia (MTD). A comprehensive treatment approach involving speech therapy, pulmonology, and psychiatry led to significant clinical improvement. This case report highlights the importance of raising awareness among healthcare providers about ILO potentially mimicking bronchial asthma exacerbation.
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Affiliation(s)
- Raman Goit
- Internal Medicine, Kathmandu Medical College, Kathmandu, NPL
| | | | - Quang Le
- Hospital Medicine, University of Missouri School of Medicine, Columbia, USA
| | - Amit Bhandari
- Internal Medicine, St John's Hospital, Springfield, USA
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9
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Le Q, Dangol G, Bhandari A. A Rare Case of Diffuse Alveolar Hemorrhage Caused by Fentanyl-Laced Marijuana. Cureus 2023; 15:e38523. [PMID: 37273291 PMCID: PMC10239029 DOI: 10.7759/cureus.38523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2023] [Indexed: 06/06/2023] Open
Abstract
Synthetic fentanyl adulteration has become a significant threat to public safety. It is commonly mixed into other drugs of abuse to lower costs and increase its addictive potential. Diffuse alveolar hemorrhage (DAH) is a rare but life-threatening complication associated with the use of fentanyl-laced products. Given the current trend, we anticipate an increase in the incidence of DAH. It is crucial to recognize and treat DAH early in its course for better outcomes. We present a case of DAH due to an overdose of marijuana laced with fentanyl, manifesting as hemoptysis, and provide a review of the current literature on the topic.
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Affiliation(s)
- Quang Le
- Department of Internal Medicine, Hospital Sisters Health System (HSHS) St. John's Hospital, Springfield, USA
| | - Gulshan Dangol
- Department of Internal Medicine, Good Samaritan Regional Health Hospital, Mount Vernon, USA
| | - Amit Bhandari
- Department of Internal Medicine, Hospital Sisters Health System (HSHS) St. John's Hospital, Springfield, USA
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10
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Lantieri MA, Perdomo Trejo JR, Le Q, Dighe A, Cui Q, Yang X. Formyl peptide receptors in bone research. Connect Tissue Res 2023; 64:229-237. [PMID: 36440821 PMCID: PMC10164673 DOI: 10.1080/03008207.2022.2149397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 11/11/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE/AIM OF THE STUDY The formyl peptide receptor (FPR) participates in the immune response, with roles in infection and inflammation. In this review article, we summarize the current literature on these roles before discussing the function of FPRs in the pathogenesis of musculoskeletal disorders including osteoarthritis (OA), degenerative disc disease (DDD), and rheumatoid arthritis (RA). Additionally, we discuss the potential diagnostic and therapeutic roles of FPRs in these domains. METHODS PubMed and Ovid MEDLINE searches were performed from 1965 through March 2022. Keywords included "FPR, tissue expression, inflammation, infection, musculoskeletal disorder, bone, rheumatoid arthritis, osteoarthritis, degenerative disc disease, mitochondria." RESULTS Sixty-nine studies were included in this review article. FPRs appear to be ubiquitous in the pathogenesis, diagnosis, and treatment of common musculoskeletal disorders. They can potentially be utilized for the earlier diagnosis of OA and DDD. They may be employed with mesenchymal stem cells (MSCs) to reverse OA and DDD pathologies. With anti-inflammatory, anti-osteolytic, and pro-angiogenic functions, they may broaden treatment options in RA. CONCLUSIONS FPRs appear to be heavily involved in the pathogenesis of common musculoskeletal conditions, including arthritis, degenerative disc disease, and rheumatoid arthritis. Furthermore, they demonstrate much promise in the diagnosis and treatment of these conditions. Their roles should continue to be explored.
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Affiliation(s)
- Mark A. Lantieri
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA
| | | | - Quang Le
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA
| | - Abhijit Dighe
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA
| | - Quanjun Cui
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA
| | - Xinlin Yang
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA
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11
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Bhandari A, Pokhrel B, Oli PR, Le Q, Basnet B, Freitag EC, Nayani A. A Rare Case of Thrombotic Thrombocytopenic Purpura (TTP) With Concurrent Renal Cell Carcinoma: Diagnostic and Therapeutic Challenges. Cureus 2023; 15:e39494. [PMID: 37362465 PMCID: PMC10290543 DOI: 10.7759/cureus.39494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2023] [Indexed: 06/28/2023] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a potentially life-threatening thrombotic microangiopathy (TMA) that needs prompt identification and treatment. Disseminated malignancy-related TMA can potentially be misdiagnosed as TTP, and patients may be inappropriately subjected to therapeutic plasma exchange (TPE) with serious implications. Likewise, the presence of a concurrent cancer diagnosis in a patient with microangiopathic hemolytic anemia and thrombocytopenia may lead to suspicion of disseminated malignancy as the cause, delaying the TPE with serious outcomes. Testing for ADAMTS13 activity is diagnostic of TTP, but the results may take time. This poses a diagnostic and therapeutic dilemma that includes weighing the benefits of TPE for treating TTP and cancer treatment. We describe a rare case of immune-mediated TTP in a patient concurrently diagnosed with metastatic renal cell cancer. To our knowledge, this is the first case of TTP reported in patients with metastatic renal cell carcinoma (RCC) in a non-treatment-naive patient.
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Affiliation(s)
- Amit Bhandari
- Internal Medicine, St John's Hospital, Springfield, USA
| | - Bidushi Pokhrel
- Intensive Care Unit, Hospital for Advanced Medicine and Surgery, Kathmandu, NPL
| | | | - Quang Le
- Hospital Medicine, University of Missouri School of Medicine, Columbia, USA
| | - Bibhusan Basnet
- Internal Medicine, Frye Regional Medical Center, Hickory, USA
| | - Eric C Freitag
- Pathology and Laboratory Medicine, St. John's Hospital, Springfield, USA
| | - Archana Nayani
- Hematology and Oncology, Springfield Clinic, Springfield, USA
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12
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Le Q, Zhang Z, Sun D, Cui Q, Yang X, Hassan AE. Anti-inflammatory activities of two new deoxygenated N-acetyl glucosamines in lipopolysaccharide-activated mouse macrophage RAW264.7 cells. Heliyon 2023; 9:e15769. [PMID: 37159698 PMCID: PMC10163627 DOI: 10.1016/j.heliyon.2023.e15769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 05/11/2023] Open
Abstract
Background Glucosamine and N-acetyl-glucosamine (NAG) are amino sugars found in human extracellular matrix with previously described anti-inflammatory effects. Despite mixed results from clinical studies, these molecules have been used extensively in supplements. Objective We investigated the anti-inflammatory properties of two synthesized derivatives of N-acetyl-glucosamine (NAG), bi-deoxy-N-acetyl-glucosamine (BNAG) 1 and 2. Methods Using mouse macrophage RAW 264.7 cells with lipopolysaccharide (LPS) to induce inflammation, the effects of NAG, BNAG 1, and BNAG 2 on the expression of IL-6, IL-1β, inducible nitric oxide synthase (iNOS) and COX-2 were studied using ELISA, Western blot and quantitative RT-PCR. Cell toxicity and nitric oxide (NO) production were evaluated using WST-1 assay and the Griess reagent, respectively. Results Among the three tested compounds, BNAG1 shows the highest inhibition of iNOS, IL-6, TNF α and IL-1β expression and NO production. All three tested compounds show slight inhibition on cell proliferation of RAW 264.7 cells, except that BNAG1 displays a remarkable toxicity at the tested maximum dose of 5 mM. Conclusion BNAG 1 and 2 exhibit notable anti-inflammatory effects compared to the parent NAG molecule.
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Affiliation(s)
- Quang Le
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
| | - Zhichang Zhang
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
- Dept of Orthopaedic Surgery, The First Affiliated Hospital of Xinxiang Medical University, Wehui, 453100, Henan, China
| | - Daniel Sun
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
| | - Quanjun Cui
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
| | - Xinlin Yang
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
- Corresponding author. Department of Orthopaedic Surgery, University of Virginia, School of Medicine, 450 Ray C. Hunt Drive, Charlottesville, VA 22908, USA.
| | - Ameer E. Hassan
- Department of Neuroscience, Valley Baptist Medical Center, 78550, USA
- Corresponding author. Department of Neuroscience, Valley Baptist Medical Center, 2101 Pease St, Harlingen, TX, 78550, USA.
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13
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Iyer JS, Pokkalla H, Biddle-Snead C, Carrasco-Zevallos O, Lin M, Shanis Z, Le Q, Juyal D, Pouryahya M, Pedawi A, Hoffman S, Elliott H, Leidal K, Myers RP, Chung C, Billin AN, Watkins TR, Resnick M, Wack K, Glickman J, Burt AD, Loomba R, Sanyal AJ, Montalto MC, Beck AH, Taylor-Weiner A, Wapinski I. AI-based histologic scoring enables automated and reproducible assessment of enrollment criteria and endpoints in NASH clinical trials. medRxiv 2023:2023.04.20.23288534. [PMID: 37162870 PMCID: PMC10168404 DOI: 10.1101/2023.04.20.23288534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Clinical trials in nonalcoholic steatohepatitis (NASH) require histologic scoring for assessment of inclusion criteria and endpoints. However, guidelines for scoring key features have led to variability in interpretation, impacting clinical trial outcomes. We developed an artificial intelligence (AI)-based measurement (AIM) tool for scoring NASH histology (AIM-NASH). AIM-NASH predictions for NASH Clinical Research Network (CRN) grades of necroinflammation and stages of fibrosis aligned with expert consensus scores and were reproducible. Continuous scores produced by AIM-NASH for key histological features of NASH correlated with mean pathologist scores and with noninvasive biomarkers and strongly predicted patient outcomes. In a retrospective analysis of the ATLAS trial, previously unmet pathological endpoints were met when scored by the AIM-NASH algorithm alone. Overall, these results suggest that AIM-NASH may assist pathologists in histologic review of NASH clinical trials, reducing inter-rater variability on trial outcomes and offering a more sensitive and reproducible measure of patient therapeutic response.
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Affiliation(s)
| | | | | | - Oscar Carrasco-Zevallos
- PathAI, Boston, MA, USA
- Affiliation shown is that during the time of study; current affiliation is Johnson & Johnson, New Brunswick, NJ, USA
| | | | | | | | | | - Maryam Pouryahya
- PathAI, Boston, MA, USA
- Affiliation shown is that during the time of study; current affiliation is AstraZeneca, Gaithersburg, MD, USA
| | - Aryan Pedawi
- PathAI, Boston, MA, USA
- Affiliation shown is that during the time of study; current affiliation is Atomwise, San Francisco, CA, USA
| | | | - Hunter Elliott
- PathAI, Boston, MA, USA
- Affiliation shown is that during the time of study; current affiliation is BigHat Biosciences, San Mateo, CA, USA
| | - Kenneth Leidal
- PathAI, Boston, MA, USA
- Affiliation shown is that during the time of study; current affiliation is Genesis Therapeutics, Burlingame, CA, USA
| | - Robert P. Myers
- Gilead Sciences, Inc., Foster City, CA, USA
- Affiliation shown is that during the time of study; current affiliation is OrsoBio, Inc., Palo Alto, CA, USA
| | - Chuhan Chung
- Gilead Sciences, Inc., Foster City, CA, USA
- Affiliation shown is that during the time of study; current affiliation is Inipharm, San Diego, CA, USA
| | | | | | - Murray Resnick
- PathAI, Boston, MA, USA
- Affiliation shown is that during the time of study; current affiliation is Rhode Island Hospital and The Miriam Hospital, Providence, RI, USA
| | | | | | | | - Rohit Loomba
- NAFLD Research Center, Division of Gastroenterology and Hepatology, University of California at San Diego, San Diego, CA, USA
| | - Arun J. Sanyal
- Stravitz-Sanyal Institute for Liver Disease and Metabolic Health, VCU School of Medicine, Richmond, VA, USA
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Yin L, Gregg AC, Riccio AM, Hoyt N, Islam ZH, Ahn J, Le Q, Patel P, Zhang M, He X, McKinney M, Kent E, Wang B. Dietary therapy in abdominal aortic aneurysm - Insights from clinical and experimental studies. Front Cardiovasc Med 2022; 9:949262. [PMID: 36211542 PMCID: PMC9532600 DOI: 10.3389/fcvm.2022.949262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 08/29/2022] [Indexed: 02/03/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a prevalent vascular disease with high mortality rates upon rupture. Despite its prevalence in elderly populations, there remain limited treatment options; invasive surgical repair, while risky, is the only therapeutic intervention with proven clinical benefits. Dietary factors have long been suggested to be closely associated with AAA risks, and dietary therapies recently emerged as promising avenues to achieve non-invasive management of a wide spectrum of diseases. However, the role of dietary therapies in AAA remains elusive. In this article, we will summarize the recent clinical and pre-clinical efforts in understanding the therapeutic and mechanistic implications of various dietary patterns and therapeutic approaches in AAA.
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Affiliation(s)
- Li Yin
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | | | - Alessandra Marie Riccio
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Nicholas Hoyt
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States,School of Medicine and Health Sciences, George Washington University, Washington, DC, United States
| | - Zain Hussain Islam
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Jungeun Ahn
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Quang Le
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Paranjay Patel
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Mengxue Zhang
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Xinran He
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Matthew McKinney
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Eric Kent
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Bowen Wang
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, United States,*Correspondence: Bowen Wang
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15
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Le Q, Baldwin M, Hobbs S, Tracci M, Clouse W, Farivar B. Contemporary Single-Center Experience With Aortic Infections. J Vasc Surg 2022. [DOI: 10.1016/j.jvs.2022.06.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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16
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Ngo DQ, Le DT, Le Q. Prophylactic Central Neck Dissection to Improve Disease-Free Survival in Pediatric Papillary Thyroid Cancer. Front Oncol 2022; 12:935294. [PMID: 35965553 PMCID: PMC9368579 DOI: 10.3389/fonc.2022.935294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Background Pediatric PTC is a rare disease. Although, the prognosis is excellent and the mortality rate is low, the role of prophylactic central neck dissection is still the subject of debate. The aim was to evaluate both the role and safety of prophylactic central neck dissection (CND) in managing pediatric papillary thyroid cancer (PTC), especially in respect of disease-free survival (DFS). Patients and Methods In this retrospective study, we collected 54 pediatric cN0 PTC patients (≤ 18 years of age) who were treated from January 2014 to January 2021 at a high-volume thyroid surgery center. Patients were divided into two groups based on the status of prophylactic CND. We analyzed the factors related to the clinicopathological features and recurrence of PTC in children. Results Of the 54 cN0 patients, 35 underwent prophylactic CND and 19 patients did not undergo prophylactic CND. The two groups were similar in clinical and pathologic features, such as age, gender, tumor size, multifocal status, and follow-up time. The average DFS was 84.4 ± 2.7 months. Log-rank tests on Kaplan-Meier curves revealed that age, gender, tumor size, multifocality, and extrathyroid extension did not relate to DFS time. Furthermore, DFS time was not affected by the extent of thyroidectomy (p=0.07) or RAI treatment (p=0.21). Prophylactic CND was found to increase DFS time for pediatric patients with cN0 PTC (p = 0.003). There was no statistically significant difference in complications such as transient hypocalcemia (p=0.15) and transient recurrent laryngeal nerve injury (p=0.37) between the prophylactic CND group and the no-prophylactic CND group. Conclusion Prophylactic CND was found to be associated with increased DFS and not with increased rates of complications after surgery.
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Affiliation(s)
- Duy Quoc Ngo
- Department of Head and Neck Surgery, Vietnam National Cancer Hospital, Hanoi, Vietnam
- Department of Oncology, Hanoi Medical University, Hanoi, Vietnam
- *Correspondence: Duy Quoc Ngo,
| | - Duong The Le
- Department of Head and Neck Surgery, Vietnam National Cancer Hospital, Hanoi, Vietnam
| | - Quang Le
- Department of Head and Neck Surgery, Vietnam National Cancer Hospital, Hanoi, Vietnam
- Department of Oncology, Hanoi Medical University, Hanoi, Vietnam
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17
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Le Q, Farivar BS. Long Term Monitoring of Thoracic Endovascular Aortic Aneurysm Repair Using Transcaval Aortic Access. Vasc Endovascular Surg 2022; 56:15385744221105357. [PMID: 35617123 DOI: 10.1177/15385744221105357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Thoracic endovascular aortic repair (TEVAR) has reduced the morbidity and mortality associated with the treatment of thoracic aortic pathologies. However, TEVAR's use is often predicated on sufficiently large femoral access for the delivery of the endograft device. Transcaval access, or the delivery of endovascular device via the vena cava before crossing into the aorta, has been used successfully for the deployment of transcatheter aortic valves. Our institution previously reported on a case of TEVAR using transcaval access. We now report on the long-term follow-up outcome of this case. At 6 years post-surgery, computed tomography angiography (CTA) indicates stable aortic repair without any concerning findings associated with the site of transcaval access into the aorta. The patient is clinically without signs of lower extremity vascular or cardiopulmonary compromise. Overall, transcaval access for TEVAR is a promising alternative to traditional femoral artery access in highly-select patients with the appropriate anatomical and pathological indications.
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Affiliation(s)
- Quang Le
- Division of Vascular and Endovascular Surgery, Department of Surgery, 12350University of Virginia Health System, Charlottesville, VA, USA
| | - Behzad S Farivar
- Division of Vascular and Endovascular Surgery, Department of Surgery, 12350University of Virginia Health System, Charlottesville, VA, USA
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18
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Le Q, Madhu V, Hart JM, Farber CR, Zunder ER, Dighe AS, Cui Q. Current evidence on potential of adipose derived stem cells to enhance bone regeneration and future projection. World J Stem Cells 2021; 13:1248-1277. [PMID: 34630861 PMCID: PMC8474721 DOI: 10.4252/wjsc.v13.i9.1248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/22/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023] Open
Abstract
Injuries to the postnatal skeleton are naturally repaired through successive steps involving specific cell types in a process collectively termed “bone regeneration”. Although complex, bone regeneration occurs through a series of well-orchestrated stages wherein endogenous bone stem cells play a central role. In most situations, bone regeneration is successful; however, there are instances when it fails and creates non-healing injuries or fracture nonunion requiring surgical or therapeutic interventions. Transplantation of adult or mesenchymal stem cells (MSCs) defined by the International Society for Cell and Gene Therapy (ISCT) as CD105+CD90+CD73+CD45-CD34-CD14orCD11b-CD79αorCD19-HLA-DR- is being investigated as an attractive therapy for bone regeneration throughout the world. MSCs isolated from adipose tissue, adipose-derived stem cells (ADSCs), are gaining increasing attention since this is the most abundant source of adult stem cells and the isolation process for ADSCs is straightforward. Currently, there is not a single Food and Drug Administration (FDA) approved ADSCs product for bone regeneration. Although the safety of ADSCs is established from their usage in numerous clinical trials, the bone-forming potential of ADSCs and MSCs, in general, is highly controversial. Growing evidence suggests that the ISCT defined phenotype may not represent bona fide osteoprogenitors. Transplantation of both ADSCs and the CD105- sub-population of ADSCs has been reported to induce bone regeneration. Most notably, cells expressing other markers such as CD146, AlphaV, CD200, PDPN, CD164, CXCR4, and PDGFRα have been shown to represent osteogenic sub-population within ADSCs. Amongst other strategies to improve the bone-forming ability of ADSCs, modulation of VEGF, TGF-β1 and BMP signaling pathways of ADSCs has shown promising results. The U.S. FDA reveals that 73% of Investigational New Drug applications for stem cell-based products rely on CD105 expression as the “positive” marker for adult stem cells. A concerted effort involving the scientific community, clinicians, industries, and regulatory bodies to redefine ADSCs using powerful selection markers and strategies to modulate signaling pathways of ADSCs will speed up the therapeutic use of ADSCs for bone regeneration.
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Affiliation(s)
- Quang Le
- Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA 22908, United States
| | - Vedavathi Madhu
- Orthopaedic Surgery Research, Thomas Jefferson University, Philadelphia, PA 19107, United States
| | - Joseph M Hart
- Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA 22908, United States
| | - Charles R Farber
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA 22908, United States
- Departments of Public Health Sciences and Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, United States
| | - Eli R Zunder
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, United States
| | - Abhijit S Dighe
- Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA 22908, United States
| | - Quanjun Cui
- Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA 22908, United States
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Le Q, Dillon CC, Lichtenstein DA, Pisor JW, Closser KD, Muchalski H. Gold(I)-NHC-catalysed synthesis of benzofurans via migratory cyclization of 2-alkynylaryl ethers. Org Biomol Chem 2020; 18:8186-8191. [PMID: 33026395 DOI: 10.1039/d0ob01538e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Homogeneous cationic gold(i) catalysis emerged as a preferred avenue for the activation of alkenes and alkynes towards reactions with weak nucleophiles, especially in cyclization reactions. Here we report an intramolecular carboalkoxylation reaction of electron-rich benzyl ethers of 2-ethynylaryl phenols catalysed by a digold(i)-NHC complex. The reaction proceeds efficiently with low catalyst loading and the resulting 2,3-disubstituted benzofurans form in moderate to good yields. Based on the results of a cross-over experiment, spectroscopic data, and DFT calculations, we propose a mechanism that accounts for the observed chemo- and regioselectivity.
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Affiliation(s)
- Quang Le
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Christopher C Dillon
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Dana A Lichtenstein
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Jeremy W Pisor
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Kristina D Closser
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Hubert Muchalski
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
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Kim D, Maxwell S, Le Q. Spatial and Temporal Comparison of Perceived Risks and Confirmed Cases of Lyme Disease: An Exploratory Study of Google Trends. Front Public Health 2020; 8:395. [PMID: 32923420 PMCID: PMC7456861 DOI: 10.3389/fpubh.2020.00395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 07/06/2020] [Indexed: 11/13/2022] Open
Abstract
Non-specific symptoms in later stages of Lyme disease (LD) may mimic a variety of autoimmune, viral, or complex diseases. Patients lacking erythema migrans or who test negative under CDC guidelines, but suspect LD may search online symptoms in vein. As a result, patients with lingering and undiagnosed symptoms turn to alternative lab tests. This study addresses patient's perceived illness in relation to CDC surveillance data. Extending the literature beyond basic searches for symptoms or disease terms, this study examines spatiotemporal dynamics among symptom, disease, and unconventional lab test searches on Google Trends, in compared with CDC confirmed cases of LD. The search terms used for the Google Trends analysis between 2011 and 2015 include: (1) "lyme" and "lyme disease" for disease, (2) "tick bite," "bone pain," "stiff neck," "circular rash," and "brain fog" for symptoms, and (3) "IGENEX" for the alternative lab test. Spatial and temporal analyses illustrate noticeable similar patterns between the search frequency and the actual LD incidence. Beyond basic searches for symptoms or disease terms, we demonstrate the improved utility of Google Trends analysis in discovering spatial and temporal patterns of perceived LD and comparing with the reported LD cases. The public health and medical communities benefit from this research through improved knowledge of undiagnosed patients who are searching for alternative labs to explain lingering symptoms. This study validates the need for further research into Google Trends data and surveillance protocols of diseases characterized by non-specific symptoms, prompting patients to "self-diagnose."
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Affiliation(s)
- Dohyeong Kim
- School of Economic, Political and Policy Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Sarah Maxwell
- School of Economic, Political and Policy Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Quang Le
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX, United States
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21
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George P, Mester B, Dasyam N, Giunti G, Le Q, Hermans I, Li P, Weinkove R. THIRD GENERATION CAR T-CELL THERAPY UTILISING TOLL LIKE RECEPTOR 2 CO-STIMULATION. Hematol Oncol 2019. [DOI: 10.1002/hon.202_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. George
- Cancer Immunotherapy Programme; Malaghan Institute of Medical Research; Wellington New Zealand
| | - B. Mester
- Cancer Immunotherapy Programme; Malaghan Institute of Medical Research; Wellington New Zealand
| | - N. Dasyam
- Cancer Immunotherapy Programme; Malaghan Institute of Medical Research; Wellington New Zealand
| | - G. Giunti
- Cancer Immunotherapy Programme; Malaghan Institute of Medical Research; Wellington New Zealand
| | - Q. Le
- Laboratory of Stem Cell and Regenerative Medicine; Guangzhou Institute of Biomedicine and Health; Guangzhou China
| | - I. Hermans
- Cancer Immunotherapy Programme; Malaghan Institute of Medical Research; Wellington New Zealand
| | - P. Li
- Laboratory of Stem Cell and Regenerative Medicine; Guangzhou Institute of Biomedicine and Health; Guangzhou China
| | - R. Weinkove
- Cancer Immunotherapy Programme; Malaghan Institute of Medical Research; Wellington New Zealand
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Le Q, Franik S, Schäfer SD, Kiesel L. Endometriose in der Peri- und Postmenopause. Gynäkologische Endokrinologie 2019. [DOI: 10.1007/s10304-019-0249-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Park C, Le Q. Efficacy and Tolerability of non-daily Statin Administration: A Systematic Review of Literature. J Contemp Pharm Pract 2019. [DOI: 10.37901/jcphp18-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Cindy Park
- Western University of Health Sciences, College of Pharmacy
| | - Quang Le
- Western University of Health Sciences, College of Pharmacy
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Le Q, Dong X. THE ASSOCIATION BETWEEN OBSERVED TESTS OF PHYSICAL IMPAIRMENT AND SOCIAL ENGAGEMENT AMONG CHINESE ELDERS IN CHICAGO. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Q Le
- Rush University Medical Center
| | - X Dong
- Rush University Medical Center
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25
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Le Q, Dong X. THE ASSOCIATION BETWEEN SELF REPORTED PHYSICAL FUNCTION AND SOCIAL ENGAGEMENT AMONG CHINESE ELDERS IN GREAT CHICAGO. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Q Le
- Rush University Medical Center
| | - X Dong
- Rush University Medical Center
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26
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Le Q, Tabuchi K, Warabi E, Hara A. The role of peroxiredoxin I in cisplatin-induced ototoxicity. Auris Nasus Larynx 2017; 44:205-212. [DOI: 10.1016/j.anl.2016.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/24/2016] [Accepted: 06/01/2016] [Indexed: 12/18/2022]
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Ren S, Hara W, Le Q, Wang L, Xing L, Li R. SU-G-JeP2-02: A Unifying Multi-Atlas Approach to Electron Density Mapping Using Multi-Parametric MRI for Radiation Treatment Planning. Med Phys 2016. [DOI: 10.1118/1.4957022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Cui Y, Pollom E, Loo B, Le Q, Hara W, Li R. TU-D-207B-03: Early Assessment of Response to Chemoradiotherapy Based On Textural Analysis of Pre and Mid-Treatment FDG-PET Image in Locally Advanced Head and Neck Cancer. Med Phys 2016. [DOI: 10.1118/1.4957511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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29
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Le Q, Tabuchi K, Hara A. Ceramide-1-phosphate protection of cochlear hair cells against cisplatin ototoxicity. Toxicol Rep 2016; 3:450-457. [PMID: 28959567 PMCID: PMC5615927 DOI: 10.1016/j.toxrep.2016.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/04/2016] [Accepted: 04/12/2016] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Ceramide-1-phosphate (C1P) is a phosphorylated form of ceramide. While ceramide is known to be an inducer of apoptosis of cochlear hair cells in cisplatin ototoxicity, little is known about the function of C1P in cochlear diseases. PURPOSE The present study was designed to examine whether C1P could protect cochlear hair cells against cisplatin ototoxicity. MATERIALS AND METHODS Explants of cochlear basal turns collected from C57BL/6J mice at postnatal days 3-5 were used in all experiments. Cochlear explants were exposed to 5 or 10 μM cisplatin for 48 h to assess the effects of C1P, NVP-231 (a ceramide kinase inhibitor), or ceramide. Western blotting of pAkt/Akt and pMAPK/MAPK was examined to check whether this pathway was modulated by C1P. RESULTS C1P activated the Akt and MAPK pathway and significantly reduced cochlear cell death induced by cisplatin. Coadministration of cisplatin and ceramide significantly increased cochlear hair cell death. In addition, when treating cochlear hair cells with NVP-231 in the presence of cisplatin or ceramide, a remarkable increase in apoptosis of hair cells was observed. CONCLUSION The present findings confirmed the protective effects of C1P in the cisplatin ototoxicity. The balance between ceramide and C1P may play a critical role in the determination of hair cell fate in cisplatin ototoxicity.
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Affiliation(s)
- Quang Le
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
| | - Keiji Tabuchi
- Department of Otolaryngology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
- Corresponding author at: Department of Otolaryngology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan.Department of OtolaryngologyFaculty of MedicineUniversity of Tsukuba1-1-1 TennodaiTsukuba305-8575Japan
| | - Akira Hara
- Department of Otolaryngology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
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Lee J, Nhu Nguyen Q, Le Q. Comparative Effectiveness of Three Bariatric Procedures: Roux-en-y Gastric Bypass, Laparoscopic Adjustable Gastric Band, and Laparoscopic Sleeve Gastrectomy in Veteran Patients. Surg Obes Relat Dis 2015. [DOI: 10.1016/j.soard.2015.08.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Choi E, Lin M, Saboury B, Le Q, D'Emic N, Sharma N, Guerrero M, Hanlon A, Moeslein F, Chuong M. Liver Toxicity Versus Dose Volume Parameters of Normal Liver for Yttrium-90 Radioembolization of Hepatic Tumors. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Le Q, Nguyen HB, Terry DR, Hoang H. Spatial Analysis of Access to Healthy Food in a Rural Area of Australia. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Le Q, Terry DR, Nguyen HB, Hoang H. Challenges Facing Vulnerable Young Adults in Food Security: Health Disparities and Regional Disadvantage. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xiang J, Le Q, Li Y, Xu J. In vivo confocal microscopy of early corneal epithelial recovery in patients with chemical injury. Eye (Lond) 2015; 29:1570-8. [PMID: 26381093 DOI: 10.1038/eye.2015.172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 07/11/2015] [Indexed: 01/01/2023] Open
Abstract
PURPOSE To investigate the early recovery of corneal epithelium in patients with chemical injuries by the application of in vivo laser scanning confocal microscopy (LSCM). METHODS LSCM was performed on 26 eyes of 18 consecutive patients at 1, 2, and 3 months post injury. The morphology of central corneal epithelium and limbus was evaluated. Analysis was performed to compare the densities of corneal apical surface cells (ASCs) and basal epithelial cells (BECs) among different injury severity and time points after injury. The comparisons were also made on inflammatory cells (ICs) and dendritic cells (DCs) infiltrating at the limbus. Moreover, the presence rate of palisades of Vogt (POV) was analyzed at 3 months post injury. RESULTS Corneal re-epithelialization was found within 3 months post injury in all eyes, except that persistent epithelium defect was identified in grade IV injured eyes even at 3 months after injury. The injury severity had a significantly negative correlation with the densities of ASCs. However, it had no relationship with the densities of BECs. The density of ICs at the limbus decreased significantly with the prolongation of follow-up, except in the grade I injured eyes. The presence rate of POV also had a significantly negative correlation with injury severity. CONCLUSION Epithelial recovery after chemical injury varied in cellular morphology and the densities of ASCs among eyes with different injury severity. The presence rates of POV decreased with the aggravation of injury. LSCM is a feasible method for observing the early recovery of corneal epithelium in patients with chemical injuries.
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Affiliation(s)
- J Xiang
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
| | - Q Le
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China.,Research Center, Eye & ENT Hospital of Fudan University, Shanghai, China.,Myopia Key Laboratory of Ministry of Health, Eye & ENT Hospital of Fudan University, Shanghai, China
| | - Y Li
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China.,Myopia Key Laboratory of Ministry of Health, Eye & ENT Hospital of Fudan University, Shanghai, China
| | - J Xu
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China.,Myopia Key Laboratory of Ministry of Health, Eye & ENT Hospital of Fudan University, Shanghai, China
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Le Q, Warren T, Selke S, Magaret A, Wald A. P07.27 Performance of herpeselect elisa for diagnosis of hsv-1 and hsv-2 infection in a clinical setting. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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36
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Chen S, Le Q, Mutaf Y, Yi B, D'souza W. SU-E-J-72: Dosimetric Study of Cone-Beam CT-Based Radiation Treatment Planning Using a Patient-Specific Stepwise CT-Density Table. Med Phys 2015. [DOI: 10.1118/1.4924159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Song J, Cui Y, Pollom E, Durkee B, Aggarwal S, Bui T, Le Q, Loo B, Hara W, Li R. TU-AB-BRA-10: Prognostic Value of Intra-Radiation Treatment FDG-PET and CT Imaging Features in Locally Advanced Head and Neck Cancer. Med Phys 2015. [DOI: 10.1118/1.4925515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Konski A, Qiang Z, Ang K, Fu K, Trotti A, Spencer S, Gunn B, Shenouda G, Le Q. OC-016: Patient reported outcomes (PRO) of RTOG 9003. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)34776-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Galloway T, Zhang Q, Nguyen-Tan P, Rosenthal D, Soulieres D, Fortin A, Silverman C, Daly M, Ridge J, Hammond J, Le Q. Predictive Value of p16 Status on the Development of a Pathologic Complete Response (pCR) at Planned Neck Dissection After Cisplatin Based Chemoradiation - A Second Analysis of RTOG 0129. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Xu B, Le Q, Sanghvi P, Mell L, Murphy J. Aspiration Pneumonia After Chemoradiation Therapy for Head and Neck Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang Z, Chan C, Wang L, Mok E, Zeidan Y, Lee-Enriquez N, Xing L, Hara W, Le Q. Prospective Analysis of Measured Oral Mucosal Dose and Oral Mucositis (OM) in Head-and-Neck Cancer (HNC) Patients During IMRT. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zeidan Y, Xiao N, Cao H, Kong C, Le Q, Sirjani D. Botulinum Toxin Confers Radioprotection in Murine Salivary Glands. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Won JY, Yoo S, Lee SK, Choi HK, Yakunina N, Le Q, Nam EC. Prevalence and factors associated with neck and jaw muscle modulation of tinnitus. Audiol Neurootol 2013; 18:261-73. [PMID: 23881235 DOI: 10.1159/000351685] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 04/24/2013] [Indexed: 11/19/2022] Open
Abstract
Forceful contractions of neck and jaw muscles have consistently been shown to modulate tinnitus and can be used to screen patients who are responsive to somatic stimulation and, therefore, optimal candidates for somatosensory-based treatment. To identify the factors associated with somatic modulation of tinnitus, 163 patients underwent 19 neck and jaw maneuvers after an extensive physiological and audiological profile was compiled. Overall, tinnitus was modulated in 57.1% of ears tested. Unilateral tinnitus showed greater prevalence of modulation. Neck maneuvers generally decreased tinnitus loudness, whereas jaw maneuvers increased loudness. Female gender and buzzing tinnitus were associated with a high prevalence of modulation and a decrease in tinnitus loudness. Loud tinnitus and low-pitched tonal tinnitus were associated with exacerbation of the condition as a result of somatic testing. Use of these characteristics to select optimal candidates for somatosensory-based tinnitus therapies may be essential for the development of an effective approach for tinnitus treatment.
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Affiliation(s)
- Jun Yeon Won
- Department of Otolaryngology, Kangwon National University School of Medicine, Chuncheon, Vietnam
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Abstract
BACKGROUND Although postoperative ileus (POI) is a common complication after major abdominal colorectal surgery, it is unknown whether a history of POI predisposes to recurrent POI in subsequent surgeries. In the present retrospective case-control study, conducted at the colorectal surgery division of a tertiary care center, we attempted to identify factors that may predict recurrent POI in ulcerative colitis (UC) patients undergoing three-stage ileal pouch-anal anastomosis (IPAA). METHODS Charts of UC patients undergoing three-stage IPAA were reviewed. All patients received a standardized accelerated postoperative care pathway. Patients were assigned to one of 3 categories: Group A patients did not have POI after either initial subtotal colectomy (STC) or subsequent IPAA, Group B patients developed POI only after initial STC, and Group C patients developed POI after both STC and IPAA. RESULTS The study group consisted of 91 patients. There were 71 (78 %) patients in Group A, 14 (15 %) patients in Group B, and 6 (7 %) patients in group C. There was no significant difference in any demographic or clinical features among patients that developed no POI, those that developed POI only after STC, and those that developed POI after both STC and IPAA. CONCLUSIONS POI is difficult to predict after first- and second-stage IPAA. Clinical factors and a history of POI from first-stage IPAA do not predict POI after second-stage IPAA. Patients with a history of POI after STC do not have an increased risk of developing recurrent POI.
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Affiliation(s)
- Q Le
- Division of Colorectal Surgery, Cedars-Sinai Medical Center, 8737 Beverly Boulevard, Suite 101, Los Angeles, CA 90048, USA
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Chan C, Zeidan Y, Advani R, Le Q, Hoppe R. Evaluation of Radiation Therapy for NK-T-cell Lymphoma of the Head and Neck. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zeidan Y, Murphy J, Chan C, An Y, Kaplan M, Colevas A, Kong C, Le Q. Postoperative Radiation Therapy for Minor Salivary Gland Carcinomas of the Head and Neck: Long-term Outcomes. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tang C, Komakula S, Chan C, Murphy J, Kong C, Jensen K, Le Q. Radiologic Assessment of Lymph Node Involvement in HPV/p16+ Oropharyngeal Cancers. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Murphy J, Nelson L, Le Q. Increasing Use of Technology With Palliative Radiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang L, Mok E, Xing L, Le Q. Monte Carlo Dose Calculations for IMRT Head-and-Neck Patients With Dental Fillings Using the Phase Space Files for LINAC. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang L, Mok E, Xing L, Khong B, Hara W, Le Q. Feasibility of Optimizing IMRT Plans Based on Measured Mucosal Dose to Adjacent Metallic Dental Fillings for Head-and-Neck Cancer Patients. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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