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Salazar JE, Fischel R, Bueche KM, Samra K, Gonzalez L, Nathan JC, Lu C, Rodriguez J, Nguyen S, Cohn WE, Boyle E. Novel Image-Guided Percutaneous Lung Tissue Excision Device With Integrated Sealing of Blood Vessels and Airways: An In Vivo Preclinical Study. Innovations (Phila) 2024:15569845241234647. [PMID: 38504149 DOI: 10.1177/15569845241234647] [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: 03/21/2024]
Abstract
OBJECTIVE This study evaluated the efficacy of the Minimally Invasive Targeted Resection (MiTR) device, a novel electrosurgical instrument that allows for targeted excision of a lung abnormality while using bipolar radiofrequency (RF) energy to seal blood vessels and airways. METHODS The MiTR system was evaluated in 7 acute and 2 chronic porcine (7-day) models to evaluate the efficacy of tissue excision with bipolar RF sealing of blood vessels and airways and application of an autologous blood patch into the excised tissue cavity. Air leak was recorded for all evaluations. The study was approved by the institutional ethical board. RESULTS Nineteen lung tissue samples, measuring 2.5 cm long × 1.2 cm diameter, were excised. In 8 of 9 animals (89%), hemostasis and pneumostasis were observed visually at the completion of the procedure. In 2 of 2 chronic animals (100%), hemostasis and pneumostasis persisted for the 7-day observation period. Histologic examination of the excised samples showed preservation of the core parenchymal architecture without evident tissue damage of the samples that would impair pathologic analysis. CONCLUSIONS Percutaneous resection of targeted lung tissue with the MiTR system demonstrated hemostasis and pneumostasis while obtaining a histologically intact sample. After regulatory approval, the use of this device could offer more tissue for analysis than a transthoracic needle biopsy or bronchoscopy and a far less invasive alternative to video-assisted thoracic surgery or thoracotomy. This may also expand patient and physician options for the early diagnosis and treatment of lung cancer.
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Affiliation(s)
| | - Richard Fischel
- Department of Surgery, University of California Irvine, CA, USA
| | | | | | | | | | | | | | | | - William E Cohn
- Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Edward Boyle
- Department of Thoracic Surgery, St. Charles Medical Center, Bend, OR, USA
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du Rusquec P, Guimbaud R, Le Malicot K, Gornet JM, Nguyen S, Lecomte T, Khemissa-Akouz F, Perrier H, Bouché O, Paoletti X, Le Tourneau C. Evaluation of the relevance of the growth modulation index (GMI) from the FFCD 0307 randomized phase III trial comparing the sequence of two chemotherapeutic regimens. ESMO Open 2023; 8:101616. [PMID: 37542912 PMCID: PMC10485393 DOI: 10.1016/j.esmoop.2023.101616] [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: 03/24/2023] [Revised: 07/07/2023] [Accepted: 07/08/2023] [Indexed: 08/07/2023] Open
Abstract
BACKGROUND Precision medicine trials disrupted the paradigm of randomized controlled trials in large populations. Patient selection may be based on molecular alterations rather than on primary tumor location. In small patient populations, the growth modulation index (GMI) has been developed to evaluate treatment efficacy by using each patient as its own control. The FFCD 0307 randomized phase III trial compared two sequences of chemotherapy in advanced gastric cancer, which represents a unique opportunity to evaluate the relevance of the GMI. PATIENTS AND METHODS In the FFCD 0307 trial, patients with advanced gastric cancer were randomized between two chemotherapy sequences [ECX followed by FOLFIRI at disease progression (arm A) versus FOLFIRI followed by ECX (arm B)]. GMI was defined as the ratio of the progression-free survival on second treatment (PFS2) to the time to progression on first treatment (TTP1). Sequence benefit was defined as a GMI exceeding 1.3 (GMI-high). GMI was correlated with overall survival (OS). OS1 and OS2 were measured from first randomization and second-line failure to death. RESULTS Four hundred and sixteen patients were randomized (209 in arm A, 207 in arm B). One hundred and seventy-five patients (42%) received the two sequences and were assessable for GMI (97 in arm A, 79 in arm B). The median GMI was higher in arm A than in arm B (0.62 versus 0.47, P = 0.04). Patients with a high GMI had a longer OS1 (median 14.9 versus 11.5 months, NS). Median OS2 was doubled in the GMI-high group (3.4 versus 1.6 months, NS). CONCLUSION GMI analyses suggest that ECX followed by FOLFIRI might represent a better therapeutic strategy than FOLFIRI followed by ECX. High GMI was associated with prolonged survival.
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Affiliation(s)
- P du Rusquec
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris, France; INSERM U900 Research Unit, PSL Research University, Institut Curie, Saint Cloud, France.
| | - R Guimbaud
- Medical Oncology, CHU de Toulouse, Toulouse, France
| | - K Le Malicot
- Department of Biostatistics, Fédération Francophone de la Cancérologie Digestive, Dijon FFCD, Dijon, France; EPICAD INSERM LNC-UMR 1231, Bourgogne Franche-Comté University, Dijon, France
| | - J-M Gornet
- Gastroenterology, Hôpital Saint-Louis, Paris, France
| | - S Nguyen
- Medical Oncology, CH de Pau, Pau, France
| | - T Lecomte
- Department of Hepatogastroenterology and Digestive Oncology, University Hospital of Tours, Tours, France
| | | | - H Perrier
- Medical Oncology, Hôpital Saint-Joseph, Marseille, France
| | - O Bouché
- Gastroenterology and Digestive Oncology, CHU de Reims, Hôpital Robert Debré, Reims, France
| | - X Paoletti
- INSERM U900 Research Unit, PSL Research University, Institut Curie, Saint Cloud, France
| | - C Le Tourneau
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris, France; INSERM U900 Research Unit, PSL Research University, Institut Curie, Saint Cloud, France
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Bhaloo A, Nguyen S, Lee BH, Valimukhametova A, Gonzalez-Rodriguez R, Sottile O, Dorsky A, Naumov AV. Doped Graphene Quantum Dots as Biocompatible Radical Scavenging Agents. Antioxidants (Basel) 2023; 12:1536. [PMID: 37627531 PMCID: PMC10451549 DOI: 10.3390/antiox12081536] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/26/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023] Open
Abstract
Oxidative stress is proven to be a leading factor in a multitude of adverse conditions, from Alzheimer's disease to cancer. Thus, developing effective radical scavenging agents to eliminate reactive oxygen species (ROS) driving many oxidative processes has become critical. In addition to conventional antioxidants, nanoscale structures and metal-organic complexes have recently shown promising potential for radical scavenging. To design an optimal nanoscale ROS scavenging agent, we have synthesized ten types of biocompatible graphene quantum dots (GQDs) augmented with various metal dopants. The radical scavenging abilities of these novel metal-doped GQD structures were, for the first time, assessed via the DPPH, KMnO4, and RHB (Rhodamine B protectant) assays. While all metal-doped GQDs consistently demonstrate antioxidant properties higher than the undoped cores, aluminum-doped GQDs exhibit 60-95% radical scavenging ability of ascorbic acid positive control. Tm-doped GQDs match the radical scavenging properties of ascorbic acid in the KMnO4 assay. All doped GQD structures possess fluorescence imaging capabilities that enable their tracking in vitro, ensuring their successful cellular internalization. Given such multifunctionality, biocompatible doped GQD antioxidants can become prospective candidates for multimodal therapeutics, including the reduction of ROS with concomitant imaging and therapeutic delivery to cancer tumors.
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Affiliation(s)
- Adam Bhaloo
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
| | - Steven Nguyen
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
| | - Bong Han Lee
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
| | - Alina Valimukhametova
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
| | | | - Olivia Sottile
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
| | - Abby Dorsky
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
| | - Anton V. Naumov
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA; (A.B.); (S.N.); (B.H.L.); (A.V.); (O.S.); (A.D.)
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Brédy S, Campion A, Nguyen S, Martinot A, Pouessel G. Pediatric private practice in the Nord-Pas-de-Calais region: Demographics, organization, and challenges. Arch Pediatr 2023:S0929-693X(23)00085-4. [PMID: 37286424 DOI: 10.1016/j.arcped.2023.04.005] [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: 08/18/2022] [Revised: 01/02/2023] [Accepted: 04/29/2023] [Indexed: 06/09/2023]
Abstract
While the needs for pediatric care are increasing and becoming more diverse, pediatric private practice in France is encountering difficulties linked to a growing medical demographic deficit. The objective of this study was to give an overview of pediatric private practice in the Nord-Pas-de-Calais region and to describe the main challenges encountered. METHODS For this descriptive observational survey, private practice pediatricians in the Nord-Pas-de-Calais region filled out an online questionnaire between April 2019 and October 2020. RESULTS The response rate was 64%. Most respondents practiced in an urban area (87%) and shared the practice with other physicians (59%). A majority (85%) had previously worked in hospital; 65% reported training in a subspecialty. Overall, 48% had other professional activities; 28% worked night shifts and 96% accepted urgent requests for consultations. A total of 33% reported having difficulties contacting specialists for consults, and 46% had difficulties in obtaining written reports of their patients' hospitalizations. All respondents participated in a form of ongoing medical education. The main difficulties were: lack of information about how to found a private practice (68%), lack of personal time (61%), balance between medical and administrative work (59%), and an excess of patients to care for (57%). The main satisfactions were: trusting relationships with patients (98%), freedom in their choice of practice (85%), and the diversity of problems and situations encountered (68%). CONCLUSION Our study underlines that private practice pediatricians are involved in healthcare provision, in particular regarding ongoing medical training, subspecialties, and continuity of care. It also highlights the problems encountered and the possible improvements: developing better communication between private practice and hospitals, reinforcing training during residency, and highlighting the importance and complementarity of private practice in children's healthcare.
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Affiliation(s)
- S Brédy
- Centre Hospitalier de Roubaix, Service de Pédiatrie, 11 Bd Lacordaire, 59100 Roubaix, France
| | - A Campion
- Cabinet de Pédiatrie Libérale, 92 Bd du Général de Gaulle, 59100 Roubaix, France
| | - S Nguyen
- Hôpital Roger Salengro, Service de Neurologie Pédiatrique, Av du Professeur Emile Laine, 59037 Lille, France
| | - A Martinot
- CHRU Lille, Service des Urgences Pédiatriques, Av du Professeur Emile Laine, 59037 Lille, France
| | - G Pouessel
- Centre Hospitalier de Roubaix, Service de Pédiatrie, 11 Bd Lacordaire, 59100 Roubaix, France.
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Singh R, Meng H, Shen T, Lumahan LEV, Nguyen S, Shen H, Dasgupta S, Qin L, Karri D, Zhu B, Yang F, Coarfa C, O’Malley BW, Yi P. TRAF4-mediated nonproteolytic ubiquitination of androgen receptor promotes castration-resistant prostate cancer. Proc Natl Acad Sci U S A 2023; 120:e2218229120. [PMID: 37155905 PMCID: PMC10193960 DOI: 10.1073/pnas.2218229120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 03/24/2023] [Indexed: 05/10/2023] Open
Abstract
Castration-resistant prostate cancer (CRPC) poses a major clinical challenge with the androgen receptor (AR) remaining to be a critical oncogenic player. Several lines of evidence indicate that AR induces a distinct transcriptional program after androgen deprivation in CRPCs. However, the mechanism triggering AR binding to a distinct set of genomic loci in CRPC and how it promotes CRPC development remain unclear. We demonstrate here that atypical ubiquitination of AR mediated by an E3 ubiquitin ligase TRAF4 plays an important role in this process. TRAF4 is highly expressed in CRPCs and promotes CRPC development. It mediates K27-linked ubiquitination at the C-terminal tail of AR and increases its association with the pioneer factor FOXA1. Consequently, AR binds to a distinct set of genomic loci enriched with FOXA1- and HOXB13-binding motifs to drive different transcriptional programs including an olfactory transduction pathway. Through the surprising upregulation of olfactory receptor gene transcription, TRAF4 increases intracellular cAMP levels and boosts E2F transcription factor activity to promote cell proliferation under androgen deprivation conditions. Altogether, these findings reveal a posttranslational mechanism driving AR-regulated transcriptional reprogramming to provide survival advantages for prostate cancer cells under castration conditions.
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Affiliation(s)
- Ramesh Singh
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Huan Meng
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Tao Shen
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | | | - Steven Nguyen
- Department of Biology and Biochemistry, Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, TX77204
| | - Hong Shen
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Subhamoy Dasgupta
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Li Qin
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Dileep Karri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Bokai Zhu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Feng Yang
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX77030
| | - Cristian Coarfa
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Bert W. O’Malley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX77030
| | - Ping Yi
- Department of Biology and Biochemistry, Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, TX77204
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LaMonte MJ, Miremad MM, Nguyen S, Lacroix AZ, Hovey KM, Roberts MB, Soliman A, Eaton CB. Abstract P225: Physical Activity and Heart Failure Prognosis in Older Postmenopausal Women. Circulation 2023. [DOI: 10.1161/circ.147.suppl_1.p225] [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] [Indexed: 03/16/2023]
Abstract
Background:
Accumulating evidence suggests that participating in physical activity (PA) following heart failure (HF) diagnosis is associated with better prognosis, including lower mortality risk. Few studies have focused on this relationship in postmenopausal women, in whom HF burden is high.
Methods:
The present study, conducted in the Women’s Health Initiative, included 2,181 postmenopausal women (mean age 68 years; 85% white, 10% black, 3% Hispanic at enrollment in 1993-1998) who were diagnosed postbaseline with incident hospitalized acute HF and had at least one self-reported PA assessment before and after (mean age 73 at latter assessment) HF diagnosis. Total recreational PA was summarized in metabolic equivalent (MET) hours per week. Women were followed for all-cause mortality from their post-HF PA assessment through March 2014. Cox regression with age as the time scale was used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for mortality associated with PA categories (before/after HF): Inactive (<7.5 MET-hr/wk)/Inactive, n=1,048; Active (≥7.5 MET-hr/wk)/Inactive, n=407; Inactive/Active, n=212; Active/Active, n=514.
Results:
There were 1,047 (48%) deaths during a mean follow-up of 12 years. Crude mortality rates per 1,000 person-years [number of deaths] across the above PA groups were 42.4 [533], 42.1 [206], 36.9 [94], and 34.7 [214]. After adjusting for age (timescale), race and ethnicity, and WHI study component, HRs (95% CI) for mortality across the PA groups were 1.00 (referent), 0.94 (0.79, 1.10), 0.80 (0.64, 1.01), and 0.60 (0.51, 0.71). Further adjustment for baseline education, BMI, physical function, smoking, menopausal hormone use, history of diabetes, hypertension, myocardial infarction, stroke, coronary revascularization, atrial fibrillation, and incident myocardial infarction during follow-up prior to HF diagnosis attenuated these associations but did not eliminate statistical significance for the Active/Active group: 1.00 (referent), 1.04 (0.87, 1.24), 0.87 (0.69, 1.10), 0.74 (0.62, 0.89). A similar pattern of results was evident when cardiovascular mortality was the study outcome.
Conclusions:
Maintaining PA levels following hospitalization for acute HF was associated with lower all-cause mortality in older postmenopausal women, an understudied population in this regard. Among women whose PA following HF diagnosis was higher than their pre-HF PA level, there was a trend for lower mortality although this did not achieve statistical significance. Studies are needed to determine whether PA is associated with prognosis in HF subtypes, such as HF with preserved ejection which is a prevalent HF subtype in older women.
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Lee B, Stokes GA, Valimukhametova A, Nguyen S, Gonzalez-Rodriguez R, Bhaloo A, Coffer J, Naumov AV. Automated Approach to In Vitro Image-Guided Photothermal Therapy with Top-Down and Bottom-Up-Synthesized Graphene Quantum Dots. Nanomaterials (Basel) 2023; 13:805. [PMID: 36903683 PMCID: PMC10005083 DOI: 10.3390/nano13050805] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Graphene-based materials have been the subject of interest for photothermal therapy due to their high light-to-heat conversion efficiency. Based on recent studies, graphene quantum dots (GQDs) are expected to possess advantageous photothermal properties and facilitate fluorescence image-tracking in the visible and near-infrared (NIR), while surpassing other graphene-based materials in their biocompatibility. Several GQD structures including reduced graphene quantum dots (RGQDs) derived from reduced graphene oxide via top-down oxidation and hyaluronic acid graphene quantum dots (HGQDs) hydrothermally bottom-up synthesized from molecular hyaluronic acid were employed to test these capabilities in the present work. These GQDs possess substantial NIR absorption and fluorescence throughout the visible and NIR beneficial for in vivo imaging while being biocompatible at up to 1.7 mg/mL concentrations. In aqueous suspensions, RGQDs and HGQDs irradiated with a low power (0.9 W/cm2) 808 nm NIR laser facilitate a temperature increase up to 47.0 °C, which is sufficient for cancer tumor ablation. In vitro photothermal experiments sampling multiple conditions directly in the 96-well plate were performed using an automated simultaneous irradiation/measurement system developed on the basis of a 3D printer. In this study, HGQDs and RGQDs facilitated the heating of HeLa cancer cells up to 54.5 °C, leading to the drastic inhibition of cell viability from over 80% down to 22.9%. GQD's fluorescence in the visible and NIR traces their successful internalization into HeLa cells maximized at 20 h suggesting both extracellular and intracellular photothermal treatment capabilities. The combination of the photothermal and imaging modalities tested in vitro makes the GQDs developed in this work prospective agents for cancer theragnostics.
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Affiliation(s)
- Bong Lee
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76109, USA
| | - Gretel A. Stokes
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76109, USA
| | - Alina Valimukhametova
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76109, USA
| | - Steven Nguyen
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76109, USA
| | | | - Adam Bhaloo
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76109, USA
| | - Jeffery Coffer
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, TX 76109, USA
| | - Anton V. Naumov
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76109, USA
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Sklavos T, Nguyen S, Sutcliffe S. Characteristics and outcomes of patients presenting with out of hospital cardiac arrest to a regional hospital. Eur Heart J 2023. [DOI: 10.1093/eurheartj/ehac779.028] [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] [Indexed: 01/26/2023] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Out of hospital cardiac arrest (OHCA) carries a high rate of mortality and can be due to cardiac or non-cardiac causes. We reviewed consecutive patients presenting with OHCA to the emergency department of a regional hospital in Australia, between January 2019 and March 2022. Medical records were reviewed to assess presenting rhythm, final diagnosis, risk factors known at time of presentation, results of cardiac investigations and survival to hospital discharge.
Results
Over the study period, 107 patients presented with cardiac arrest, with an average age of 67 years (range 29 to 95 years). Most patients were male (70, 67%), although in those with a non-cardiac cause identified only 53% were male. An underlying cardiac cause was identified in 50 (47%), a non-cardiac cause was identified in 18 (17%), and 39 (36%) had no identifiable cause. The most common cardiac causes were ST-elevation myocardial infarction (18, 36%), followed by non-ischaemic cardiomyopathy (9, 18%) and scar-related arrhythmia (7, 14%). Overall, ischaemic heart disease was responsible for 31 (62%) cases. Coronary angiography was performed in 36 (72%) of cardiac cases. Those who were diagnosed with ST-elevation myocardial infarction had an average time from presentation to coronary angiography of 61 minutes while the average was 38 hours for all patients presenting with OHCA. The most common presenting rhythm was ventricular fibrillation (39, 38%). The overall mortality rate was 61% for all OHCA. Among those with a cardiac cause, a non-cardiac cause or no cause identified for the OHCA, the mortality rates were 32%, 87% and 87% respectively. Data published by the regional Ambulance Service show that the survival to discharge from hospital of 39% in our regional hospital is comparable with state-wide outcomes.
Discussion
These data reflect the significant mortality and wide spectrum of disease underlying OHCA, and thus the challenge of managing patients presenting with OHCA. Cardiac disease accounts for almost half of all cases of OHCA, and also encompasses a wide spectrum of disease. However, the mortality in patients with OHCA due to an underlying cardiac cause, while still significant, is better than those patients in whom no cardiac cause is identified.
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Affiliation(s)
- T Sklavos
- Cairns Hospital , Cairns , Australia
| | - S Nguyen
- Cairns Hospital , Cairns , Australia
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Yu B, Katafiasz TJ, Nguyen S, Allegri G, Finlayson J, Greenhalgh ES, Pinho ST, Pimenta S. Characterizing and predicting the relationship between translaminar fracture toughness and pull-out length distributions under distinct temperatures. Philos Trans A Math Phys Eng Sci 2023; 381:20210220. [PMID: 36403637 DOI: 10.1098/rsta.2021.0220] [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] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/11/2022] [Indexed: 06/16/2023]
Abstract
The translaminar fracture toughness reflects the damage tolerance of a fibre-reinforced composite under longitudinal tension, which often governs the final failure of structures. One of the main energy-dissipation mechanisms that contributes to the translaminar toughness of composites is the fibre pull-out process. The present study aims to quantify and model the statistical distribution of fibre pull-out lengths formed on the translaminar fracture surface of composites, for the first time in the literature; this is done under different temperatures, so that the relationship between pull-out length distributions, micromechanical properties and the translaminar fracture toughness can be established. The fracture surfaces of cross-ply compact tension specimens tested under three different temperatures have been scanned through X-ray computed tomography to quantify the extent of fibre pull-out on the fracture surfaces; the distribution of pull-out lengths showed alarger average and larger variability with an increase in temperature, which also lead to an increase in translaminar fracture toughness. A similar trend has been captured by the proposed analytical model, which predicts the pull-out length distribution based on the analysis of quasi-fractal idealizations of the fracture surface, yielding an overall accuracy of more than 85%. This article is part of the theme issue 'Ageing and durability of composite materials'.
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Affiliation(s)
- B Yu
- Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - T J Katafiasz
- Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - S Nguyen
- Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - G Allegri
- Bristol Composites Institute (ACCIS), University of Bristol, Queen's Building, Bristol BS8 1TR, UK
| | - J Finlayson
- Structural Systems Design, Rolls-Royce plc, Derby, UK
| | - E S Greenhalgh
- Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - S T Pinho
- Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - S Pimenta
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
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Ansinelli H, Gay C, Nguyen S, Morrison CM, Robbins JR. Personalized precision radiotherapy and its evolving role for human papillomavirus-positive oropharyngeal cancer. Journal of the National Cancer Center 2022. [DOI: 10.1016/j.jncc.2022.11.006] [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: 12/31/2022] Open
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Heal C, Hsu C, Ho Q, Dougherty S, Ansinelli H, Morrison C, Gay C, Xing J, Nguyen S, Gonzalez V, Stea B, Robbins J. Technology Usage and Impacts by COVID-19 among Patients in a Radiation Oncology Clinic. Int J Radiat Oncol Biol Phys 2022. [PMCID: PMC9595464 DOI: 10.1016/j.ijrobp.2022.07.919] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Purpose/Objective(s) Mobile devices provide platforms for consistent and real time symptom tracking for cancer patients, allowing for better symptom reporting and more timely interventions. There is limited research investigating barriers to adoption within the oncology setting and COVID-19 impacts on patent willingness to use health technology. Understanding these issues is key to successful development and implementation. We designed a survey to assess patient willingness and barriers to using mobile devices to report/track symptoms (e-report). Materials/Methods Two cohorts of adult patients completed a 21-question anonymized survey. The survey was administered to clinic patients before (PRE) and 18mo after (POST) the start of the COVID pandemic. Three additional questions were added to POST survey to investigate impacts from COVID. Demographics, technology usage, willingness to report data, barriers to utilization, and changes due to COVID were evaluated using descriptive statistics. Predictors of willingness to e-report, barriers to use, and changes due to the COVID-19 pandemic were analyzed using univariate and multivariate logistic regression (MVA). Results 318 patients completed the survey (PRE= 144 patients; POST= 174 patients) with mean age 65y, 75% Caucasian, 55% male. Altogether, 75% used a smart phone (PRE=66.7%; POST=81.3%; p 0.003), 90% reported home internet access (PRE=87.5%; POST=91.4%; p 0.259), 86% used a computer (PRE=79.2%; POST=90.8%; p 0.004), and 26% used a wearable health tracker (PRE 25.7%; POST 26.4%; p 0.881). On MVA, age>65 (OR 0.32; p 0.001), annual income>50K (OR 2.16; p 0.032), smart phone ownership (OR 4.07; p 0.000), and new/current patient status (OR 2.15; p 0.020) were all significant factors impacting willingness to e- report. Limited tech literacy (p 0.024) and time commitment (p 0.048) were the only significant barriers. Privacy as a barrier was greater in PRE vs POST cohort (OR 2.3 vs OR 1.1) trending toward significance. Nearly all modes of tech usage were greater in POST vs PRE cohort. POST cohort was significantly more willing to e- report (81.1% vs 69.1%; OR 1.91; p 0.016). This remained significant on MVA after adjusting for age, concern for privacy, tech literacy, and patient status (OR 1.88; p 0.026). Furthermore, 51% of POST cohort reported the pandemic directly influenced their willingness to e-report (40% more, 11% less). Conclusion Radiation oncology patients are willing to use mobile technology to report symptoms. Willingness increases with decreasing age, increasing annual income, smartphone ownership, and new/current patient status. Significant barriers include tech literacy and time commitment. Post-pandemic patients are more willing to e-report and list fewer barriers. The COVID-19 pandemic appears to have had a positive impact on technology usage by patients. Efforts to develop and test mobile applications for this population are justified.
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Affiliation(s)
- C. Heal
- University of Arizona - Department of Radiation Oncology, Tucson, AZ,Corresponding author
| | - C.C. Hsu
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - Q.A. Ho
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - S.T. Dougherty
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - H. Ansinelli
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - C. Morrison
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - C. Gay
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - J.L. Xing
- University of Arizona, Department of Radiation Oncology, Tucson, AZ
| | - S. Nguyen
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - V.J. Gonzalez
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - B. Stea
- University of Arizona - Department of Radiation Oncology, Tucson, AZ
| | - J.R. Robbins
- University of Arizona, Department of Radiation Oncology, Tucson, AZ
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Ho Q, Heal C, Ansinelli H, Xing J, Nguyen S, Gay C, Robbins J. The Effects of a Radiation Oncology Emergencies Lecture on Initiation of Care, Timeliness of Consultations Placed and Duration of Hospitalization. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.365] [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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13
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Michaels P, Kung F, Nguyen S, Slover C, Shortridge D, Streit J, Echols R, Takemura M, Yamano Y. 461 In vitro antibacterial activity of cefiderocol against a multinational collection of Pseudomonas aeruginosa isolates from people with cystic fibrosis: SENTRY 2020–2021. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01151-1] [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]
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14
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Valimukhametova AR, Zub OS, Lee BH, Fannon O, Nguyen S, Gonzalez-Rodriguez R, Akkaraju GR, Naumov AV. Dual-Mode Fluorescence/Ultrasound Imaging with Biocompatible Metal-Doped Graphene Quantum Dots. ACS Biomater Sci Eng 2022; 8:4965-4975. [PMID: 36179254 DOI: 10.1021/acsbiomaterials.2c00794] [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: 11/29/2022]
Abstract
Sonography offers many advantages over standard methods of diagnostic imaging due to its non-invasiveness, substantial tissue penetration depth, and low cost. The benefits of ultrasound imaging call for the development of ultrasound-trackable drug delivery vehicles that can address a variety of therapeutic targets. One disadvantage of the technique is the lack of high-precision imaging, which can be circumvented by complementing ultrasound contrast agents with visible and, especially, near-infrared (NIR) fluorophores. In this work, we, for the first time, develop a variety of lightly metal-doped (iron oxide, silver, thulium, neodymium, cerium oxide, cerium chloride, and molybdenum disulfide) nitrogen-containing graphene quantum dots (NGQDs) that demonstrate high-contrast properties in the ultrasound brightness mode and exhibit visible and/or near-infrared fluorescence imaging capabilities. NGQDs synthesized from glucosamine precursors with only a few percent metal doping do not introduce additional toxicity in vitro, yielding over 80% cell viability up to 2 mg/mL doses. Their small (<50 nm) sizes warrant effective cell internalization, while oxygen-containing surface functional groups decorating their surfaces render NGQDs water soluble and allow for the attachment of therapeutics and targeting agents. Utilizing visible and/or NIR fluorescence, we demonstrate that metal-doped NGQDs experience maximum accumulation within the HEK-293 cells 6-12 h after treatment. The successful 10-fold ultrasound signal enhancement is observed at 0.5-1.6 mg/mL for most metal-doped NGQDs in the vascular phantom, agarose gel, and animal tissue. A combination of non-invasive ultrasound imaging with capabilities of high-precision fluorescence tracking makes these metal-doped NGQDs a viable agent for a variety of theragnostic applications.
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Affiliation(s)
- Alina R Valimukhametova
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Olga S Zub
- Alfa Radiology Management, Inc, Plano, Texas 75023, United States
| | - Bong Han Lee
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Olivia Fannon
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Steven Nguyen
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Roberto Gonzalez-Rodriguez
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Giridhar R Akkaraju
- Department of Biology, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Anton V Naumov
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, Texas 76129, United States
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Ajgaonkar R, Lee B, Valimukhametova A, Nguyen S, Gonzalez-Rodriguez R, Coffer J, Akkaraju GR, Naumov AV. Detection of Pancreatic Cancer miRNA with Biocompatible Nitrogen-Doped Graphene Quantum Dots. Materials (Basel) 2022; 15:ma15165760. [PMID: 36013894 PMCID: PMC9414703 DOI: 10.3390/ma15165760] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/17/2022] [Accepted: 08/17/2022] [Indexed: 05/05/2023]
Abstract
Early-stage pancreatic cancer remains challenging to detect, leading to a poor five-year patient survival rate. This obstacle necessitates the development of early detection approaches based on novel technologies and materials. In this work, the presence of a specific pancreatic cancer-derived miRNA (pre-miR-132) is detected using the fluorescence properties of biocompatible nitrogen-doped graphene quantum dots (NGQDs) synthesized using a bottom-up approach from a single glucosamine precursor. The sensor platform is comprised of slightly positively charged (1.14 ± 0.36 mV) NGQDs bound via π-π stacking and/or electrostatic interactions to the negatively charged (-22.4 ± 6.00 mV) bait ssDNA; together, they form a complex with a 20 nm average size. The NGQDs' fluorescence distinguishes specific single-stranded DNA sequences due to bait-target complementarity, discriminating them from random control sequences with sensitivity in the micromolar range. Furthermore, this targetability can also detect the stem and loop portions of pre-miR-132, adding to the practicality of the biosensor. This non-invasive approach allows cancer-specific miRNA detection to facilitate early diagnosis of various forms of cancer.
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Affiliation(s)
- Ryan Ajgaonkar
- School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA
- Department of Biology, Texas Christian University, Fort Worth, TX 76129, USA
| | - Bong Lee
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA
| | - Alina Valimukhametova
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA
| | - Steven Nguyen
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA
| | | | - Jeffery Coffer
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, TX 76129, USA
| | | | - Anton V. Naumov
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA
- Correspondence: ; Tel.: +1-(713)-253-8775
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Dhedin N, Chevillon F, Castelle M, Lavoipière V, Vasseur L, Dalle JH, Joseph L, Beckerich F, Buchbinder N, Coman T, Garban F, Ferster A, Nguyen S, Boissel N, Arlet JB, Pondarre C. HLA-matched related-donor hematopoietic stem cell transplantation is a suitable treatment in adolescents and adults with sickle cell disease: comparison of myeloablative and non-myeloablative approaches. Am J Hematol 2022; 97:E359-E362. [PMID: 35802796 DOI: 10.1002/ajh.26656] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Nathalie Dhedin
- Hematology Unit for Adolescents and Young Adults, Saint Louis Hospital, Paris, France
| | - Florian Chevillon
- Hematology Unit for Adolescents and Young Adults, Saint Louis Hospital, Paris, France
| | | | - Virginie Lavoipière
- Internal Medicine and Clinical Immunology, Conception Hospital, Marseille. France; Internal Medicine, Martigues Hospital, France
| | - Loic Vasseur
- Hematology Unit for Adolescents and Young Adults, Saint Louis Hospital, Paris, France
| | | | | | | | | | - Tereza Coman
- Department of Hematology, Gustave Roussy Hospital, Villejuif, France
| | | | - Alina Ferster
- Hemato-Oncology and Transplantation Unit, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - S Nguyen
- Department of Hematology, Pitié Salpetrière Hospital, Sorbonne University, Paris, France
| | - Nicolas Boissel
- Hematology Unit for Adolescents and Young Adults, Saint Louis Hospital, Paris, France
| | - Jean-Benoit Arlet
- French Sickle Cell Referral Center, Internal Medicine Department, Georges Pompidou European Hospital, and Université de Paris, Paris, France
| | - Corinne Pondarre
- Pediatric Department, Sickle Cell Referral Center, Centre Hospitalier Intercommunal de Créteil, France and Inserm U955, Université Paris XII, Créteil, France
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17
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Liwag T, Wong K, Martinez E, Nguyen S. Acute Multi-Organ Toxicity During 24-Hour Dosing of Intravenous Amiodarone: A Case Report. Cureus 2022; 14:e25028. [PMID: 35719804 PMCID: PMC9199562 DOI: 10.7759/cureus.25028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2022] [Indexed: 12/05/2022] Open
Abstract
We present a unique case of a 60-year-old male with congestive heart failure who was admitted for a pre-syncopal episode and found to be in atrial fibrillation with rapid ventricular response (RVR). In order to effectively rate control the patient, he was administered an amiodarone bolus and intravenous (IV) infusion over 24 hours, along with a single oral 200 mg dose the following day. The patient subsequently developed acute hepatotoxicity along with features of acute kidney injury (AKI), pulmonary distress, and leukocytosis. After ruling out other etiologies for acute liver, pulmonary, and kidney injury, amiodarone-induced multi-organ toxicity was suspected and amiodarone was discontinued. Within hours of amiodarone discontinuation, the patient’s clinical status and organ function improved remarkably. In the setting of a patient being treated with IV amiodarone and presenting with sudden signs of dyspnea, acute elevation of transaminases and AKI within one to two days of initial dosing, acute amiodarone-induced organ toxicity should be considered.
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18
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Anandakrishnan R, Tobey H, Nguyen S, Sandoval O, Klein BG, Costa BM. Cranial manipulation affects cholinergic pathway gene expression in aged rats. J Osteopath Med 2022; 122:95-103. [PMID: 34995434 DOI: 10.1515/jom-2021-0183] [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: 07/14/2021] [Accepted: 09/01/2021] [Indexed: 11/15/2022]
Abstract
CONTEXT Age-dependent dementia is a devastating disorder afflicting a growing older population. Although pharmacological agents improve symptoms of dementia, age-related comorbidities combined with adverse effects often outweigh their clinical benefits. Therefore, nonpharmacological therapies are being investigated as an alternative. In a previous pilot study, aged rats demonstrated improved spatial memory after osteopathic cranial manipulative medicine (OCMM) treatment. OBJECTIVES In this continuation of the pilot study, we examine the effect of OCMM on gene expression to elicit possible explanations for the improvement in spatial memory. METHODS OCMM was performed on six of 12 elderly rats every day for 7 days. Rats were then euthanized to obtain the brain tissue, from which RNA samples were extracted. RNA from three treated and three controls were of sufficient quality for sequencing. These samples were sequenced utilizing next-generation sequencing from Illumina NextSeq. The Cufflinks software suite was utilized to assemble transcriptomes and quantify the RNA expression level for each sample. RESULTS Transcriptome analysis revealed that OCMM significantly affected the expression of 36 genes in the neuronal pathway (false discovery rate [FDR] <0.004). The top five neuronal genes with the largest-fold change were part of the cholinergic neurotransmission mechanism, which is known to affect cognitive function. In addition, 39.9% of 426 significant differentially expressed (SDE) genes (FDR<0.004) have been previously implicated in neurological disorders. Overall, changes in SDE genes combined with their role in central nervous system signaling pathways suggest a connection to previously reported OCMM-induced behavioral and biochemical changes in aged rats. CONCLUSIONS Results from this pilot study provide sufficient evidence to support a more extensive study with a larger sample size. Further investigation in this direction will provide a better understanding of the molecular mechanisms of OCMM and its potential in clinical applications. With clinical validation, OCMM could represent a much-needed low-risk adjunct treatment for age-related dementia including Alzheimer's disease.
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Affiliation(s)
- Ramu Anandakrishnan
- Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA, USA.,Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA.,Gibbs Cancer Center and Research Institute, Spartanburg, SC, USA
| | - Hope Tobey
- Sports and Osteopathic Medicine, Edward Via College of Osteopathic Medicine, Blacksburg, VA, USA
| | - Steven Nguyen
- Edward Via College of Osteopathic Medicine, Blacksburg, VA, USA
| | - Osscar Sandoval
- Edward Via College of Osteopathic Medicine, Blacksburg, VA, USA
| | - Bradley G Klein
- Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA.,School of Neuroscience, Virginia Tech, Blacksburg, VA, USA
| | - Blaise M Costa
- Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA, USA.,Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA
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Chong A, Wahi S, Cox S, Nguyen S, Robinson J, Mew T, Singh S, Singbal Y. Echocardiographic vs Invasive Estimation of Left Atrial Pressure – Ongoing Search for the Holy Grail. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.248] [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: 11/16/2022]
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20
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Moroz M, Ostiguy G, Delvaux F, Nuehrenboerger C, Nguyen S, Kaux JF, Schindler M, Seil R, Martens G. Le développement athlétique des jeunes : synthèse ReFORM de la position de consensus du CIO. Sci Sports 2022. [DOI: 10.1016/j.scispo.2021.12.001] [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: 10/19/2022]
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21
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Nguyen S, Van de Perre E, Velkeniers B, Pierret L, Gutermuth J, Grosber M. Resolution of idiopathic erythema gyratum repens with acitretin. J Eur Acad Dermatol Venereol 2021; 36:e300-e302. [PMID: 34863008 DOI: 10.1111/jdv.17851] [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: 11/28/2022]
Affiliation(s)
- S Nguyen
- Department of Dermatology, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - E Van de Perre
- Department of Nephrology, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - B Velkeniers
- Department of Endocrinology, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - L Pierret
- Dr. Pierret Dermatoloog Dworp, Dworp, Belgium
| | - J Gutermuth
- Department of Dermatology, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - M Grosber
- Department of Dermatology, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
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22
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Hickey C, Nguyen S, Anes J, Hurley D, Donoghue O, Fanning S, Schaffer K. Differences in antimicrobial susceptibility testing complicating management of IMP carbapenemase-producing Enterobacterales infection. J Glob Antimicrob Resist 2021; 27:284-288. [PMID: 34775131 DOI: 10.1016/j.jgar.2021.09.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/11/2020] [Revised: 09/02/2021] [Accepted: 09/29/2021] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES IMP-type carbapenemases are rarely detected in Europe and limited information is available to guide the treatment of infections caused by carbapenemase-producing Enterobacterales (CPE) producing these carbapenemases. Accurate antimicrobial susceptibility testing (AST) results are essential for optimal antibiotic management. Here we report discrepancies in AST of IMP-producing Enterobacterales (IMP-CPE) complicating the management of severe sepsis. METHODS Antimicrobial susceptibilities were analysed by in-house VITEK® 2, Etest and broth microdilution (BMD). Carbapenemase-encoding genes were detected by PCR. Whole-genome sequencing (WGS) was performed using an Illumina MiSeq platform. RESULTS Minimum inhibitory concentrations (MICs) determined by VITEK® 2 for Enterobacter hormaechei and Klebsiella oxytoca blood culture isolates were ≥16 mg/L for meropenem and ≤0.5 mg/L for ertapenem. In contrast, Etest analysis and BMD returned MICs of 2 mg/L and 1 mg/L, respectively. Both isolates tested positive for IMP carbapenemase-encoding genes by PCR. WGS revealed that both isolates carried the same blaIMP-4 gene. Based on VITEK® 2 susceptibilities, initial treatment was with tigecycline and amikacin. After subsequent deterioration, the patient was successfully treated with ertapenem and amikacin. CONCLUSION This case highlights that automated AST by VITEK® 2 can over-report meropenem resistance for IMP carbapenemase-producers compared with Etest and BMD. Clinicians need to be cautious deciding against carbapenem treatment based on VITEK® 2 susceptibility testing results for IMP-positive Enterobacterales. Tigecycline was inferior to carbapenem treatment for pyelonephritis caused by isolates expressing IMP carbapenemases, however specific evidence guiding the treatment of these infections is lacking.
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Affiliation(s)
- C Hickey
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland; Department of Clinical Microbiology, St Vincent's University Hospital, Elm Park, Dublin D04 T6F4, Ireland
| | - S Nguyen
- School of Public Health, Physiotherapy & Sports Science, University College Dublin, Belfield, Dublin D04 N2E5, Ireland
| | - J Anes
- School of Public Health, Physiotherapy & Sports Science, University College Dublin, Belfield, Dublin D04 N2E5, Ireland
| | - D Hurley
- School of Public Health, Physiotherapy & Sports Science, University College Dublin, Belfield, Dublin D04 N2E5, Ireland
| | - O Donoghue
- Department of Clinical Microbiology, St Vincent's University Hospital, Elm Park, Dublin D04 T6F4, Ireland
| | - S Fanning
- School of Public Health, Physiotherapy & Sports Science, University College Dublin, Belfield, Dublin D04 N2E5, Ireland
| | - K Schaffer
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland; Department of Clinical Microbiology, St Vincent's University Hospital, Elm Park, Dublin D04 T6F4, Ireland.
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Todd J, Thomas P, Nguyen S. Cyclophosphamide and prednisolone for chemotherapy naïve B cell multicentric lymphoma in dogs: 32 cases (2017-2021). J Small Anim Pract 2021; 63:52-55. [PMID: 34647324 DOI: 10.1111/jsap.13428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/20/2021] [Accepted: 08/26/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The aim of this study was to characterise the response rate and toxicity profile of cyclophosphamide and prednisolone given to dogs with newly diagnosed, chemotherapy naïve, B cell multicentric lymphoma. MATERIALS AND METHODS Dogs with diagnosed with B cell lymphoma naïve to chemotherapy treatment were prospectively identified at the author's institution (2017 to 2021) and given cyclophosphamide as their initial chemotherapeutic agent in combination with prednisolone with owner's consent. Signalment, laboratory findings, stage, treatment response and toxicity were recorded. RESULTS Thirty-two dogs were included in the study. The overall response rate in this population of dogs was 84%. Twenty dogs (62%) had a partial response, three dogs (9%) had a complete response, four dogs (12%) had stable disease and five dogs (15%) had progressive disease. Side effects were noted in 47% of patients, with neutropaenia being the most commonly reported. CLINICAL SIGNIFICANCE Cyclophosphamide and prednisolone were well-tolerated with limited side effects. The response rate observed in this cohort of dogs with chemotherapy-naïve B cell multicentric lymphoma is promising. Further comparative studies are required to confirm the safety and effectiveness of this intervention.
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Affiliation(s)
- J Todd
- Small Animal Specialist Hospital (SASH), 2 Bounty Close, Tuggerah, NSW, 2259, Australia
| | - P Thomas
- Small Animal Specialist Hospital (SASH), 2 Bounty Close, Tuggerah, NSW, 2259, Australia
| | - S Nguyen
- Small Animal Specialist Hospital (SASH), 2 Bounty Close, Tuggerah, NSW, 2259, Australia
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Mohamud D, Nguyen S, Schawlm J. EARLY DISCHARGE OF PRIMARY PCI PATIENTS. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.047] [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: 11/15/2022] Open
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Tran H, Nguyen S, Nguyen K, Pham D, Le A, Nguyen G, Tran D, Shu X, Osarogiagbon R, Tran T. OA18.01 Lung Cancer in Vietnam. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.094] [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: 10/20/2022]
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26
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Nguyen S, Banks WA, Rhea EM. Effects of Rapamycin on Insulin Brain Endothelial Cell Binding and Blood-Brain Barrier Transport. Med Sci (Basel) 2021; 9:medsci9030056. [PMID: 34449653 PMCID: PMC8395935 DOI: 10.3390/medsci9030056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/09/2021] [Accepted: 08/17/2021] [Indexed: 12/04/2022] Open
Abstract
Rapamycin is an exogenous compound that has been shown to improve cognition in Alzheimer’s disease mouse models and can regulate pathways downstream of the insulin receptor signaling pathway. Insulin is also known to improve cognition in rodent models of Alzheimer’s disease. Central nervous system (CNS) insulin must first cross the blood–brain barrier (BBB), a specialized network of brain endothelial cells. This transport process is regulated by physiological factors, such as insulin itself, triglycerides, cytokines, and starvation. Since rapamycin treatment can alter the metabolic state of rodents, increase the circulating triglycerides, and acts as a starvation mimetic, we hypothesized rapamycin could alter the rate of insulin transport across the BBB, providing a potential mechanism for the beneficial effects of rapamycin on cognition. Using young male and female CD-1 mice, we measured the effects of rapamycin on the basal levels of serum factors, insulin receptor signaling, vascular binding, and BBB pharmacokinetics. We found chronic rapamycin treatment was able to affect basal levels of circulating serum factors and endothelial cell insulin receptor signaling. In addition, while acute rapamycin treatment did affect insulin binding at the BBB, overall transport was unaltered. Chronic rapamycin slowed insulin BBB transport non-significantly (p = 0.055). These results suggest that rapamycin may not directly impact the transport of insulin at the BBB but could be acting to alter insulin signaling within brain endothelial cells, which can affect downstream signaling.
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Affiliation(s)
| | - William A. Banks
- Department of Medicine, Division of Gerontology and Geriatric Medicine, University of Washington, Seattle, WA 98195, USA;
- Research and Development, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Elizabeth M. Rhea
- Department of Medicine, Division of Gerontology and Geriatric Medicine, University of Washington, Seattle, WA 98195, USA;
- Research and Development, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
- Correspondence:
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Vitrat V, Maillard A, Raybaud A, Wackenheim C, Chanzy B, Nguyen S, Valran A, Bosch A, Noret M, Delory T. Séroprévalence SARS-Cov-2 chez les professionnels de santé : étude multicentrique avec analyse des facteurs de risque professionnels et extraprofessionnels. Infect Dis Now 2021. [PMCID: PMC8327511 DOI: 10.1016/j.idnow.2021.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Introduction L’objectif de notre étude était d’évaluer la séroprévalence SARS-Cov-2 chez les professionnels de santé, après la première vague Covid-19, et d’analyser les facteurs professionnels et extraprofessionnels modifiant cette prévalence. Matériels et méthodes Suite aux instructions gouvernementales proposant de réaliser une sérologie Covid-19 à tout professionnel de santé après la première vague, nous avons réalisé une étude transversale, multicentrique. Tous les professionnels volontaires des quatre centres participants étaient invités à réaliser une sérologie et à remplir un questionnaire concernant leurs données démographiques, leurs caractéristiques professionnelles, l’utilisation des équipements de protection individuelle et l’exposition extra professionnelle au Covid-19. Nous avons calculé la prévalence SARS-Cov-2 et utilisé une régression logistique en appliquant un effet centre. Résultats Un total de 3454 professionnels ont participé à l’étude dont 83,4 % de femmes. L’âge moyen était de 40,6 ans [31,8–50,3]. En médiane, la prévalence sérologique SARS-Cov-2 était de 5 % (95 % IC, 4,3 %–5,8 %). Les facteurs associés à une plus forte séroprévalence étaient : l’âge < 30 ans (aOR = 1,59, (95 % IC, 1,06–2,37)), le statut d’étudiant (aOR = 3,38, (95 % IC, 1,62–7,05)) avec une séroprévalence de 16,9 % dans cette catégorie. L’unité de travail, y compris le fait d’avoir travaillé en unité Covid ou en réanimation, ainsi que l’exposition à des patients (quel que soit leur statut infectieux) n’étaient pas associé à une augmentation de la séroprévalence. Par contre les professionnels rapportant un contact avec un patient Covid, sans protection adaptée, ou ayant pratiqué des taches aérosolisantes, y compris avec un masque FFP2, avaient un surrisque d’infection Covid-19 (respectivement aOR à 1,66 et 1,7). Enfin, l’exposition à un collègue infecté ou à un cas familial était également associée à une augmentation de la prévalence sérologique. Conclusion Les mesures mises en place pour limiter la transmission du SARS-Cov-2 des patients aux professionnels de santé semblent efficaces. En complément de la vaccination, l’éviction systématique des professionnels infectés, la formation des étudiants et le rappel des mesures d’hygiène durant les temps de pause pourraient limiter la contamination des professionnels de santé.
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Laurent A, Nguyen S, Leclerc P, Capellier G. L’enfant visiteur en réanimation adulte : vécu psychologique de la visite et dispositifs d’accompagnement. PRAT PSYCHOL 2021. [DOI: 10.1016/j.prps.2020.06.007] [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: 10/23/2022]
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Nguyen S, Northuis CA, Guan W, Bressler J, Grove M, Xia R, Wang Z, Fernandez-Rhodes L, Justice AE, Li Y, Whitsel E, North KE, Fornage M, Boerwinkle E, Pankow JS, Demerath EW. Abstract 033: Epigenetic Clocks And Incident Heart Failure: The Atherosclerosis Risk In Communities (aric). Circulation 2021. [DOI: 10.1161/circ.143.suppl_1.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 11/16/2022]
Abstract
Background:
DNA methylation (DNAm)-based measures of aging, termed epigenetic clocks (EC), are associated with aging-related outcomes including cardiovascular disease (CVD) and all-cause mortality. Associations of ECs with heart failure (HF) are unclear. We tested whether ECs were positively associated with risk of incident HF in the Atherosclerosis Risk in Communities (ARIC) study and evaluated whether adding ECs to Pooled Cohort Equation (PCE) variables improved risk prediction.
Methods:
We measured DNAm in peripheral blood leukocytes in 2,263 African American (mean age=56.3 years) and 925 European American (mean age=59.5 years) participants using the Illumina HM450K and calculated 7 ECs: Horvath, Hannum, extrinsic (EEAA) and intrinsic (IEAA) epigenetic age acceleration, Hannum, PhenoAge, and GrimAge. HF was ascertained by
ICD-
9 code 428 and adjudication by an expert panel. We carried out race stratified proportional hazards regression to test associations ECs with incident HF, adjusting for PCE variables: age, sex, smoking, total cholesterol, HDL, systolic blood pressure (SBP), antihypertensive medication use, and diabetes. We calculated area under the curve (AUC) and integrated discrimination index (IDI) to evaluate improvement in risk prediction when adding the ECs to PCE variables.
Results:
The number of incident HF events and mean follow-up time in African Americans and European Americans were 640 (189 in the first 10 years) and 19.3 years, and 191 and 21.7 years, respectively. All 7 ECs were positively associated with HF in both African Americans and European Americans. In African Americans with follow-up restricted to the first 10 years, the HR for a one SD increment in GrimAge (5.64 years) was 1.57 (95% CI=1.31, 1.88), comparable to that for a one-SD (5.82 years) increment in age (HR=1.58, 95% CI=1.36, 1.83) and greater than that for a one-SD (20.2mmHg) increment in SBP (HR=1.33, 95% CI=1.18, 1.51). In European Americans across the entire follow-up period, the HR for a one-SD increment in GrimAge (6.13 years) was 1.22 (95% CI=1.06, 1.41), smaller than that for a one-SD (5.50 years) increment in age (HR=1.93, 95% CI=1.63, 2.29) and larger than that for a one-SD (17.9 mmHG) increment in SBP (HR=1.13, 95% CI=0.98, 1.30). In African Americans with follow-up restricted to the first 10 years, adding GrimAge to PCE variables increased AUC by 0.019 (95% CI=0.003, 0.035) and the IDI was 0.010 (95% CI=0.002, 0.019). In European Americans, adding GrimAge did not change AUC appreciably (0.004, 95% CI=-0.006, 0.014) and the IDI was 0.002 (95% CI=0.000, 0.005).
Conclusion:
ECs are positively associated with HF in African American and European American participants independent of traditional CVD risk factors. GrimAge modestly improved heart failure risk prediction in African Americans. HF-specific DNAm-based measures should be developed and evaluated for improvement in risk prediction.
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Affiliation(s)
| | | | | | | | - Megan Grove
- Univ of Texas Health Science Cntr, Houston, TX
| | - Rui Xia
- Univ of Texas Health Science Cntr, Houston, TX
| | | | | | | | - Yun Li
- Univ of North Carolina, Chapel Hill, NC
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Delaloge S, Dureau S, D'Hondt V, Desmoulins I, Heudel PE, Duhoux F, Levy C, Lerebours F, Mouret-Reynier MA, Dalenc F, Frenel JS, Jouannaud C, Venat-Bouvet L, Nguyen S, Callens C, Gentien D, Manduzio H, Vincent-Salomon A, Lemonnier J, Cottu P. 63O Letrozole and palbociclib versus third generation chemotherapy as neoadjuvant treatment in luminal breast cancer: Survival results of the UNICANCER-NeoPAL study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.03.077] [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: 11/26/2022] Open
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Lembong J, O’Rourke B, Sears T, Nguyen S, Barnett C, Salmi M, Kombe M, Getz J, Garg P, Whitelonis A, Rowley J, Cap B, Barcia R. Large scale manufacturing and potency assay development for hmscs in regenerative medicine. Cytotherapy 2021. [DOI: 10.1016/s1465324921005508] [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: 10/21/2022]
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Rhea EM, Nirkhe S, Nguyen S, Pemberton S, Bammler TK, Beyer R, Niehoff ML, Morley JE, Farr SA, Banks WA. Molecular Mechanisms of Intranasal Insulin in SAMP8 Mice. J Alzheimers Dis 2020; 71:1361-1373. [PMID: 31561374 DOI: 10.3233/jad-190707] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 12/23/2022]
Abstract
Research on intranasal delivery of drugs, peptides, and proteins has grown over the past decade as an alternate way to deliver substrates to the brain. Recent work has shown intranasal (INL) delivery of insulin improves memory and cognition in healthy subjects as well as patients with Alzheimer's disease (AD) and in AD mouse models. However, the molecular mechanism(s) for the beneficial effect of insulin on memory are still unclear. Using the SAMP8 mouse model of AD, we investigated the impact of INL insulin on protein and gene expression in brain regions including the olfactory bulb, hypothalamus, and hippocampus. We found genes and proteins in the insulin receptor signaling pathway were not activated by the doses tested. However, we did find the expression of genes present in the hippocampus involved in other pathways, especially those related to inflammation, were altered due to age and with a dose of INL insulin previously shown to improve cognition. These alternate pathways could be targets of insulin when delivered via the INL route to aid in memory improvement.
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Affiliation(s)
- Elizabeth M Rhea
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Department of Medicine, University of Washington, Seattle, WA, USA
| | - Surabhi Nirkhe
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Steven Nguyen
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Sarah Pemberton
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Theo K Bammler
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Richard Beyer
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Michael L Niehoff
- Department of Internal Medicine, Saint Louis School of Medicine, St. Louis, MO, USA
| | - John E Morley
- Department of Internal Medicine, Saint Louis School of Medicine, St. Louis, MO, USA
| | - Susan A Farr
- Department of Internal Medicine, Saint Louis School of Medicine, St. Louis, MO, USA
| | - William A Banks
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Department of Medicine, University of Washington, Seattle, WA, USA
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Noizet M, Gottwalles Y, Nguyen S, Thibaud E, Labrosse F, Delmas N, Vilbois E, Marchetto J, Heymonet S. Retour d’expérience de deux structures d’urgences de centres hospitaliers généraux pendant la crise de la Covid-19. Ann Fr Med Urgence 2020. [DOI: 10.3166/afmu-2020-0263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
La Covid-19 s’est abattue sur l’Alsace en quelques jours, mettant à mal les hôpitaux de Mulhouse et de Colmar. Bien que proches, des différences notables existent au sein de ces deux structures en termes architecturaux et de ressources humaines. Comment cette vague a-t-elle modifié les organisations de chacun ? Quelles alternatives ont pu être mises en place ? Après la présentation de chaque site sont analysées les adaptations nécessaires afin d’absorber les flux de patients et leur proposer une prise en charge décente malgré des conditions parfois très dégradées. Nouvelles filières, modifications organisationnelles, renforts de personnel en interne puis en externe, augmentation capacitaire nette, recherches de solutions alternatives aux voies classiques d’approvisionnement des matériels… ont été une partie de la solution. Malgré les alertes du terrain, l’action nationale est restée en décalage de compréhension de la gravité de la situation locale, avec des recommandations et des actions soit inapplicables, soit trop tardives. Les établissements et professionnels de santé ont eu un sentiment d’isolement, renforcé par l’absence de représentant des tutelles et notamment de l’Agence régionale de santé sur le terrain. Deux éléments majeurs peuvent être mis en avant : une cohésion majeure de l’ensemble du centre hospitalier avec travail d’équipe et de terrain entre soignants et direction, et une implication de l’ensemble des acteurs de la médecine d’urgence (public, privé, libéraux, service départemental d’incendie et de secours) ; ils ont été les déterminants dans notre capacité à faire face à cet événement inédit.
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Lafraire J, Rioux C, Hamaoui J, Girgis H, Nguyen S, Thibaut JP. Food as a borderline domain of knowledge: The development of domain-specific inductive reasoning strategies in young children. Cognitive Development 2020. [DOI: 10.1016/j.cogdev.2020.100946] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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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Nguyen S, Wallard P, Oddoux O, Descamps D. Caractéristiques cliniques et pronostiques des bactériémies à Staphylococcus aureus dans un centre hospitalier général. Med Mal Infect 2020. [DOI: 10.1016/j.medmal.2020.06.051] [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: 11/27/2022]
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Frenel JS, Dalenc F, Pistilli B, de La Motte Rouge T, Levy C, Mouret-Reynier MA, Hardy-Bessard AC, Bonichon-Lamichhane N, Greilsamer C, Delecroix V, Nguyen S, Berger F, Everhard S, Lemonnier J, Loirat D, Callens C, Pradines A, Bachelot T, Delaloge S, Bidard F. 304P ESR1 mutations and outcomes in BRCA1/2 or PALB2 germline mutation carriers receiving first line aromatase inhibitor + palbociclib (AI+P) for metastatic breast cancer (MBC) in the PADA-1 trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wallard P, Nguyen S, Robineau O, Descamps D, Senneville E. Prise en charge de l’ostéite du pied diabétique par chirurgie conservatrice. Med Mal Infect 2020. [DOI: 10.1016/j.medmal.2020.06.265] [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: 10/23/2022]
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Gaertner B, van Heesch S, Schneider-Lunitz V, Schulz JF, Witte F, Blachut S, Nguyen S, Wong R, Matta I, Hübner N, Sander M. A human ESC-based screen identifies a role for the translated lncRNA LINC00261 in pancreatic endocrine differentiation. eLife 2020; 9:e58659. [PMID: 32744504 PMCID: PMC7423336 DOI: 10.7554/elife.58659] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 08/01/2020] [Indexed: 12/16/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are a heterogenous group of RNAs, which can encode small proteins. The extent to which developmentally regulated lncRNAs are translated and whether the produced microproteins are relevant for human development is unknown. Using a human embryonic stem cell (hESC)-based pancreatic differentiation system, we show that many lncRNAs in direct vicinity of lineage-determining transcription factors (TFs) are dynamically regulated, predominantly cytosolic, and highly translated. We genetically ablated ten such lncRNAs, most of them translated, and found that nine are dispensable for pancreatic endocrine cell development. However, deletion of LINC00261 diminishes insulin+ cells, in a manner independent of the nearby TF FOXA2. One-by-one disruption of each of LINC00261's open reading frames suggests that the RNA, rather than the produced microproteins, is required for endocrine development. Our work highlights extensive translation of lncRNAs during hESC pancreatic differentiation and provides a blueprint for dissection of their coding and noncoding roles.
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Affiliation(s)
- Bjoern Gaertner
- Departments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
| | - Sebastiaan van Heesch
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Valentin Schneider-Lunitz
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Jana Felicitas Schulz
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Franziska Witte
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Susanne Blachut
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Steven Nguyen
- Departments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
| | - Regina Wong
- Departments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
| | - Ileana Matta
- Departments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
| | - Norbert Hübner
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
- DZHK (German Centre for Cardiovascular Research), Partner Site BerlinBerlinGermany
- Berlin Institute of Health (BIH)BerlinGermany
- Charité -UniversitätsmedizinBerlinGermany
| | - Maike Sander
- Departments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
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Eckert WA, Wiener JJM, Cai H, Ameriks MK, Zhu J, Ngo K, Nguyen S, Fung-Leung WP, Thurmond RL, Grice C, Edwards JP, Chaplan SR, Karlsson L, Sun S. Selective inhibition of peripheral cathepsin S reverses tactile allodynia following peripheral nerve injury in mouse. Eur J Pharmacol 2020; 880:173171. [PMID: 32437743 DOI: 10.1016/j.ejphar.2020.173171] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/29/2020] [Accepted: 05/04/2020] [Indexed: 10/24/2022]
Abstract
Cathepsin S (CatS) is a cysteine protease found in lysosomes of hematopoietic and microglial cells and in secreted form in the extracellular space. While CatS has been shown to contribute significantly to neuropathic pain, the precise mechanisms remain unclear. In this report, we describe JNJ-39641160, a novel non-covalent, potent, selective and orally-available CatS inhibitor that is peripherally restricted (non-CNS penetrant) and may represent an innovative class of immunosuppressive and analgesic compounds and tools useful toward investigating peripheral mechanisms of CatS in neuropathic pain. In C57BL/6 mice, JNJ-39641160 dose-dependently blocked the proteolysis of the invariant chain, and inhibited both T-cell activation and antibody production to a vaccine antigen. In the spared nerve injury (SNI) model of chronic neuropathic pain, in which T-cell activation has previously been demonstrated to be a prerequisite for the development of pain hypersensitivity, JNJ-39641160 fully reversed tactile allodynia in wild-type mice but was completely ineffective in the same model in CatS knockout mice (which exhibited a delayed onset in allodynia). By contrast, in the acute mild thermal injury (MTI) model, JNJ-39641160 only weakly attenuated allodynia at the highest dose tested. These findings support the hypothesis that blockade of peripheral CatS alone is sufficient to fully reverse allodynia following peripheral nerve injury and suggest that the mechanism of action likely involves interruption of T-cell activation and peripheral cytokine release. In addition, they provide important insights toward the development of selective CatS inhibitors for the treatment of neuropathic pain in humans.
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Affiliation(s)
- William A Eckert
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA.
| | - John J M Wiener
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Hui Cai
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Michael K Ameriks
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Jian Zhu
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Karen Ngo
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Steven Nguyen
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Wai-Ping Fung-Leung
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Robin L Thurmond
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Cheryl Grice
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - James P Edwards
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Sandra R Chaplan
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Lars Karlsson
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
| | - Siquan Sun
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, USA
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Sinson E, Ocampo C, Liao C, Nguyen S, Dinh L, Rodems K, Whitters E, Hamilton RG. Cross-reactive carbohydrate determinant interference in cellulose-based IgE allergy tests utilizing recombinant allergen components. PLoS One 2020; 15:e0231344. [PMID: 32324770 PMCID: PMC7179882 DOI: 10.1371/journal.pone.0231344] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/21/2020] [Indexed: 12/21/2022] Open
Abstract
Background Cross-reactive carbohydrate determinant (CCD) structures found in plant and insect glycoproteins are commonly recognized by IgE antibodies as epitopes that can lead to extensive cross-reactivity and obscure in vitro diagnostic (IVD) serology results. With the introduction of component resolved diagnosis (CRD), recombinant non-glycosylated components have been utilized to mitigate the risk of CCD-specific IgE (sIgE) detection. However, a recent study has shown that CCD-sIgE may bind directly to the cellulose solid phase matrix used in certain in vitro diagnostic assays, eliminating the advantage of CRD over traditional extract-based testing. The aim of this study is to further investigate the prevalence of CCD-sIgE interference on a commonly-used in vitro sIgE automated platform which employs a cellulose-based matrix to immobilize CCD-free recombinant components. Methods Sera from patients sensitized to peanut, silver birch, and/or timothy grass were analyzed for CCD-sIgE reactivity on ImmunoCAP/Phadia and NOVEOS autoanalyzers against the MUXF3 carbohydrate component. Positive CCD-sIgE sera were further analyzed against non-glycosylated recombinant components bound to the ImmunoCAP solid phase in the absence and presence of a soluble CCD inhibitor. For comparison, sera were then analyzed on NOVEOS, a non-cellulose based automated sIgE assay. Results Sera from 35% of the sensitized population tested in this study were positive (≥0.35 kU/L) for CCD-sIgE. Of those positives, 17% resulted in CCD-sIgE-positive (false positive) results on ImmunoCAP using non-glycosylated allergosorbents that were negative on NOVEOS. Sera producing false-positive results on ImmunoCAP had varying levels of CCD-sIgE from 0.67 kU/L to 36.52 kU/L. The incidence of CCD interference was predominantly delimited to low-positive IgE results (0.35 kUA/L– 3.00 kUA/L). Conclusion Falsely elevated diagnostic allergen-sIgE results can commonly occur due to the presence of CCD-sIgE using assays that employ a carbohydrate matrix-based allergosorbent. Even the use of non-glycosylated recombinant allergenic components coupled to cellulose matrices do not reduce their risk of detection. The risk of CCD interference that compromises quantitative IgE results can be mitigated by the addition of a soluble CCD inhibitor to positive CCD-sIgE containing sera or by alternatively using a non-cellulose based sIgE assay, such as the NOVEOS assay.
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Affiliation(s)
- Edsel Sinson
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
- * E-mail:
| | - Camille Ocampo
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
| | - Cindy Liao
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
| | - Steven Nguyen
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
| | - Lauren Dinh
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
| | - Kelline Rodems
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
| | - Eric Whitters
- HYCOR Biomedical LLC, Garden Grove, California, United States of America
| | - Robert G. Hamilton
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
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Lee YJ, Okuda Y, Sy J, Obi Y, Kang DH, Nguyen S, Hsiung JT, Park C, Rhee CM, Kovesdy CP, Streja E, Kalantar-Zadeh K. Association of Mineral Bone Disorder With Decline in Residual Kidney Function in Incident Hemodialysis Patients. J Bone Miner Res 2020; 35:317-325. [PMID: 31610040 DOI: 10.1002/jbmr.3893] [Citation(s) in RCA: 5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/15/2019] [Accepted: 09/11/2019] [Indexed: 01/17/2023]
Abstract
Abnormalities of mineral bone disorder (MBD) parameters have been suggested to be associated with poor renal outcome in predialysis patients. However, the impact of those parameters on decline in residual kidney function (RKF) is uncertain among incident hemodialysis (HD) patients. We performed a retrospective cohort study in 13,772 patients who initiated conventional HD during 2007 to 2011 and survived 6 months of dialysis. We examined the association of baseline serum phosphorus, calcium, intact parathyroid hormone (PTH), and alkaline phosphatase (ALP) with a decline in RKF. Decline in RKF was assessed by estimated slope of renal urea clearance (KRU) over 6 months from HD initiation. Our cohort had a mean ± SD age of 62 ± 15 years; 64% were men, 57% were white, 65% had diabetes, and 51% had hypertension. The median (interquartile range [IQR]) baseline KRU level was 3.4 (2.0, 5.2) mL/min/1.73 m2 . The median (IQR) estimated 6-month KRU slope was -1.47 (-2.24, -0.63) mL/min/1.73 m2 per 6 months. In linear regression models, higher phosphorus categories were associated with a steeper 6-month KRU slope compared with the reference category (phosphorus 4.0 to <4.5 mg/dL). Lower calcium and higher intact PTH and ALP categories were also associated with a steeper 6-month KRU slope compared with their respective reference groups (calcium 9.2 to <9.5 mg/dL; intact PTH 150 to <250 pg/mL; ALP <60 U/L). The increased number of parameter abnormalities had an additive effect on decline in RKF. Abnormalities of MBD parameters including higher phosphorus, intact PTH, ALP and lower calcium levels were independently associated with decline in RKF in incident HD patients. © 2019 American Society for Bone and Mineral Research. © 2019 American Society for Bone and Mineral Research.
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Affiliation(s)
- Yu-Ji Lee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA.,Division of Nephrology, Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Yusuke Okuda
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - John Sy
- Nephrology Section, VA Long Beach Healthcare System, Long Beach, CA, USA
| | - Yoshitsugu Obi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - Duk-Hee Kang
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA.,Division of Nephrology, Department of Internal Medicine, Ewha Womans University College of Medicine, Ewha Medical Research Center, Seoul, Korea
| | - Steven Nguyen
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - Jui Ting Hsiung
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - Christina Park
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - Connie M Rhee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - Csaba P Kovesdy
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA.,Nephrology Section, Memphis Veterans Affairs Medical Center, Memphis, TN, USA
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA, USA
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McMaster A, Helms A, Nguyen S, Preston S, Brazzale A, Starmer G. 867 Percutaneous Intervention to Saphenous Vein Graft in Far North Queensland; Feasibility and Safety in a Regional Centre. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.874] [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: 11/28/2022]
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43
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Nguyen S, Arriaga Castellanos K, Abraham A, Rajfer J, Ferrini M. 169 COMP-4 Reduces Oxidative Stress Markers in the Rat Corpora Cavernosa and Media of the Penile Dorsal Artery. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2019.11.115] [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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Maffey M, Nguyen S, Wahi S. 414 The Diagnostic Value of Inpatient Transthoracic Echocardiography for Stroke and TIA. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.421] [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: 11/15/2022]
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Cottu P, D'Hondt V, Dureau S, Lerebours F, Desmoulins I, Heudel PE, Duhoux FP, Levy C, Mouret-Reynier MA, Dalenc F, Frenel JS, Jouannaud C, Venat-Bouvet L, Nguyen S, Ferrero JM, Canon JL, Grenier J, Callens C, Gentien D, Lemonnier J, Vincent-Salomon A, Delaloge S. Letrozole and palbociclib versus chemotherapy as neoadjuvant therapy of high-risk luminal breast cancer. Ann Oncol 2019; 29:2334-2340. [PMID: 30307466 DOI: 10.1093/annonc/mdy448] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background Palbociclib is a CDK4/6 inhibitor with demonstrated efficacy and safety in combination with endocrine therapy in advanced luminal breast cancer (LBC). We evaluated the respective efficacy and safety of chemotherapy and letrozole-palbociclib (LETPAL) combination as neoadjuvant treatment in patients with high-risk LBC. Patients and methods NeoPAL (UCBG10/4, NCT02400567) is a randomised, parallel, non-comparative phase II study. Patients with ER-positive, HER2-negative, Prosigna®-defined luminal B, or luminal A and node-positive, stage II-III breast cancer, not candidate for breast-conserving surgery, were randomly assigned to either letrozole (2.5 mg daily) and palbociclib (125 mg daily, 3 weeks/4) during 19 weeks, or to FEC100 (5FU 500 mg/m2, epirubicin 100 mg/m2, cyclophosphamide 500 mg/m2)×3 21-day courses followed by docetaxel 100 mg/m2×3 21-day courses. Primary end point was residual cancer burden (RCB 0-I rate). Secondary end points included clinical response, proliferation-based markers, and safety. Results Overall, 106 patients were randomised [median Prosigna® ROR Score 71 (22-93)]. RCB 0-I was observed in four and eight patients in LETPAL [7.7% (95% CI 0.4-14.9)] and chemotherapy [15.7% (95% CI 5.7-25.7)] arms, respectively. Pathological complete response rates were 3.8% and 5.9%. Clinical response (75%) and breast-conserving surgery rates (69%) were similar in both arms. Preoperative Endocrine Prognostic Index 0 scores (breast cancer-specific survival) were observed in 17.6% and 8.0% of patients in LETPAL and chemotherapy arms, respectively. Safety profile was as expected, with 2 versus 17 serious adverse events (including 11 grade 4 serious AEs in the chemotherapy arm). Conclusion LETPAL combination was associated with poor pathological response but encouraging clinical and biomarker responses in Prosigna®-defined high-risk LBC. Contemporary chemotherapy regimen was associated with poor pathological and biomarker responses, with a much less favourable safety profile. LETPAL combination might represent an alternative to chemotherapy in early high-risk LBC. Clinical Trial Number NCT02400567.
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Affiliation(s)
- P Cottu
- Department of Medical Oncology, Institut Curie, Paris, France; Paris Sciences et Lettres University, Paris, France.
| | - V D'Hondt
- Department of Medical Oncology, Institut Régional du Cancer de Montpellier, Montpellier, France
| | - S Dureau
- Department of Biometry, Institut Curie, Saint-Cloud, France
| | - F Lerebours
- Department of Medical Oncology, Institut Curie, Saint-Cloud, France
| | - I Desmoulins
- Department of Medical Oncology, Centre Georges-François Leclerc, Dijon, France
| | - P-E Heudel
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | - F P Duhoux
- Department of Medical Oncology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - C Levy
- Department of Medical Oncology, Centre François Baclesse, Caen, France
| | - M-A Mouret-Reynier
- Department of Medical Oncology, Centre Jean Perrin, Clermont-Ferrand, France
| | - F Dalenc
- Department of Medical Oncology, Institut Claudius Regaud, IUCT-Oncopole Toulouse, Toulouse, France
| | - J-S Frenel
- Department of Medical Oncology, ICO Institut de Cancérologie de l'Ouest René Gauducheau, Saint-Herblain, France
| | - C Jouannaud
- Department of Medical Oncology, Institut Jean Godinot, Reims, France
| | - L Venat-Bouvet
- Department of Medical Oncology, Limoges University Hospital, Limoges, France
| | - S Nguyen
- Department of Medical Oncology, Centre Hospitalier de Pau, Pau, France
| | - J-M Ferrero
- Department of Medical Oncology, Centre Antoine Lacassagne, Nice, France
| | - J-L Canon
- Department of Oncology-Hematology, Grand Hôpital de Charleroi, Charleroi, Belgium
| | - J Grenier
- Department of Medical Oncology, Institut Sainte-Catherine, Avignon, France
| | - C Callens
- Paris Sciences et Lettres University, Paris, France; Pharmacogenomics, Department of Tumor Biology, France
| | - D Gentien
- Paris Sciences et Lettres University, Paris, France; Genomics Platforms, Translational Research Department, Institut Curie, Paris, France
| | | | - A Vincent-Salomon
- Paris Sciences et Lettres University, Paris, France; Tumour Biology Department, Institut Curie, Paris, France
| | - S Delaloge
- Department of Medical Oncology, Gustave Roussy Cancer Campus, Villejuif, France
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Staples B, Ennedy E, Kim T, Nguyen S, Shore A, Vu T, Labovitz J, Wedel M. Cutaneous Branch of the Obturator Nerve Extending to the Medial Ankle and Foot: A Report of Two Cadaveric Cases. J Foot Ankle Surg 2019; 58:1267-1272. [PMID: 31350139 DOI: 10.1053/j.jfas.2019.03.007] [Citation(s) in RCA: 3] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 03/04/2019] [Indexed: 02/03/2023]
Abstract
The area of skin supplied by the cutaneous branch of the obturator nerve (CBO) is highly variable. Although most introductory anatomy texts describe the CBO as innervating only a portion of the medial thigh, there are numerous reports in the literature of CBOs passing the knee to innervate the proximal, middle, or even distal leg. There are no previous reports of CBOs extending to the ankle and foot. Herein we describe 2 cases of CBOs extending at least to the medial foot. Both cases were discovered incidentally, during routine cadaver dissections by osteopathic and podiatric medical students in the anatomy laboratory of Western University of Health Sciences in California. In both instances, the anomalously long CBOs shared several characteristics: (1) they arose as direct branches of the anterior division of the obturator nerve, not from the subsartorial plexus; (2) they coursed immediately posterior to the great saphenous vein from the distal thigh to the distal leg, only deviating away from the saphenous vein just above the medial malleolus; and (3) they terminated in radiating fibers to the posterior half of the medial ankle and foot. In both cases, the saphenous branch of the femoral nerve was present but restricted to the area anterior to the great saphenous vein. It is likely that the variant CBOs carried fibers of the L4 spinal nerve and thus provided cutaneous innervation to the medial foot and ankle, a function most commonly reserved for the saphenous branch of the femoral nerve distal to the knee. Saphenous neuropathy is a common postoperative complication of saphenous cutdowns for coronary artery bypass grafts, so the potential involvement of a long CBO can add additional complexity to regional anesthetic blocks for foot and ankle surgery and procedures such as vein harvesting for coronary artery bypass grafts.
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Affiliation(s)
- Brittany Staples
- Student, Western University of Health Sciences College of Podiatric Medicine, Pomona, CA; Chief Surgical Resident, SSM Health DePaul Hospital, St. Louis, MO.
| | - Edward Ennedy
- Student, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, Pomona, CA; Resident, Medical City Forth Worth and University of North Texas Health Science Center, Fort Worth, TX
| | - Tae Kim
- Student, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, Pomona, CA
| | - Steven Nguyen
- Student, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, Pomona, CA; Resident, Einstein Healthcare Network, Philadelphia, PA
| | - Andrew Shore
- Student, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, Pomona, CA; Resident, University of Missouri School of Medicine, Kansas City, MO
| | - Thomas Vu
- Student, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, Pomona, CA; Resident, Mercy Health, Muskegon, MI
| | - Jonathan Labovitz
- Professor, Department of Podiatric Medicine, Surgery, and Biomechanics, and Associate Dean of Clinical Education and Graduate Placement, Western University of Health Sciences College of Podiatric Medicine, Pomona, CA
| | - Mathew Wedel
- Associate Professor, Department of Anatomy, Western University of Health Sciences College of Osteopathic Medicine of the Pacific and College of Podiatric Medicine, Pomona, CA
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Marques C, Nguyen S, Chiu R, Olch A, Chang E, Ballas L, Wong K. Comparison of Workflow Efficiency of VMAT Craniospinal Irradiation Between Adult and Pediatric Settings. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1121] [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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Nguyen S, Maaninka K, Mäyränpää I M, Metso J, Jauhiainen M, P. Kovanen T, Öörni K. Neutrophil Protease 3 Is Present In Human Atherosclerotic Lesions And Modifies Ldl And Hdl Particles. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.235] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Boucher A, Robineau O, Viget N, Nguyen S, Huleux T, Meybeck A, Senneville E, Celia S, Ajana F. Évaluation du statut vaccinal des voyageurs dans un centre de vaccinations internationales. Med Mal Infect 2019. [DOI: 10.1016/j.medmal.2019.04.322] [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: 11/17/2022]
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50
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Geraldino-Pardilla L, Perel-Winkler A, Miceli J, Neville K, Danias G, Nguyen S, Dervieux T, Kapoor T, Giles J, Askanase A. Association between hydroxychloroquine levels and disease activity in a predominantly Hispanic systemic lupus erythematosus cohort. Lupus 2019; 28:862-867. [PMID: 31122136 DOI: 10.1177/0961203319851558] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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
OBJECTIVES Hydroxychloroquine (HCQ) is a key therapy in systemic lupus erythematosus (SLE). Medication non-adherence is reported in up to 80% of lupus patients and results in increased morbidity, mortality, and health care utilization. HCQ levels are a sensitive and reliable method to assess medication adherence. Our study evaluated the role of HCQ level measurement in routine clinical care and its association with disease activity in a predominantly Hispanic population. METHODS SLE patients from the Columbia University Lupus cohort treated with HCQ for ≥ 6 months and reporting medication adherence were included. HCQ levels were measured by whole blood high performance liquid chromatography. Non-adherence was defined as an HCQ level <500 ng/ml. The association between HCQ levels and disease activity measured by Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) was evaluated. RESULTS One hundred and eight patients were enrolled; the median age was 38 years, 91% were female, and 63% were Hispanic. The median SLEDAI-2K was 4.3 (0-20). Forty-one percent of patients had an HCQ level <500 ng/ml consistent with non-adherence, of which 19% had undetectable levels. A higher SLEDAI-2K score was associated with low HCQ levels (p = 0.003). This association remained significant after adjusting for depression (p = 0.0007). CONCLUSION HCQ levels < 500 ng/ml were associated with higher disease activity and accounted for 32% of the SLEDAI-2K variability. HCQ blood measurement is a simple and reliable method to evaluate medication adherence in SLE. Reasons for non-adherence (levels < 500 ng/ml) should be further explored and addressed.
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Affiliation(s)
- L Geraldino-Pardilla
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - A Perel-Winkler
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - J Miceli
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - K Neville
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - G Danias
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - S Nguyen
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | | | - T Kapoor
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - J Giles
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
| | - A Askanase
- 1 Division of Rheumatology, Columbia University College of Physicians and Surgeons, and New York Presbyterian Hospital, New York, USA
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