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Lulla A, Dickson R, Wells M, Gilbert M, Rogers Keene K, Patrick C. Prehospital Surgical Cricothyrotomy in a Ground-Based 9-1-1 EMS System: A Retrospective Review. Prehosp Disaster Med 2024:1-4. [PMID: 38651343 DOI: 10.1017/s1049023x24000311] [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: 04/25/2024]
Abstract
BACKGROUND Airway management is a cornerstone in the prehospital care of critically ill or injured patients. Surgical cricothyrotomy offers a rapid and effective solution when oxygenation and ventilation fail using less-invasive techniques. However, the exact indications, incidence, and success of prehospital surgical cricothyrotomy are unknown, with variable rates reported in the literature. This study aimed to examine prehospital indications and success rates for surgical cricothyrotomy within a large, suburban, ground-based Emergency Medical Services (EMS) system. METHODS This is a retrospective analysis of 31 patients who underwent paramedic performed surgical cricothyrotomy from 2012 through 2022. Key demographic parameters were analyzed, including the incidence of cardiac arrest, call type (trauma versus medical), initial airway management attempts, number of endotracheal intubation (ETI) attempts before surgical airway, and average time to the establishment of a surgical airway in relation to the number of ETI attempts. Surgical cricothyrotomy success was defined as the acquisition of four-phase end-tidal capnography reading. The primary data sources were the EMS electronic medical records, and descriptive statistics were calculated. RESULTS A total of 31 patients were included in the final analysis. Of those who received a surgical cricothyrotomy, 42% (13/31) occurred in the trauma setting, while 58% (18/31) were medical calls. In all patients who underwent surgical cricothyrotomy, the median (IQR) time to the procedure was 17 minutes (IQR = 11-24). In trauma patients, the median time to surgical cricothyrotomy was 12 minutes (IQR = 9-19) versus 19 minutes (IQR = 14-33) in medical patients. End-tidal carbon dioxide (ETCO2) detection and placement success was confirmed in 94% (29/31) of patients. Endotracheal intubation was attempted in 55% (17/31) before subsequent surgical cricothyrotomy, with 29% (9/31) receiving more than one ETI attempt. The median time to surgical cricothyrotomy when multiple prior intubation attempts occurred was 33 minutes (IQR = 23-36) compared to 14.5 minutes (IQR = 6-19) in patients without a preceding intubation attempt. CONCLUSION Prehospital surgical airway can be performed by paramedics with a high degree of success. Identification of the need for surgical cricothyrotomy should be determined as soon as possible to allow for rapid securement of the airway and to ensure adequate oxygenation and ventilation.
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Affiliation(s)
- Al Lulla
- Department of Emergency Medicine, UT Southwestern Medical Center, Dallas, TexasUSA
| | - Robert Dickson
- Montgomery County Hospital District EMS, Conroe, TexasUSA
- Baylor College of Medicine, Department of Emergency Medicine, Houston, TexasUSA
- Department of Emergency Medicine, HCA Houston Healthcare-Kingwood, Kingwood, TexasUSA
| | - Michael Wells
- Montgomery County Hospital District EMS, Conroe, TexasUSA
| | - Matthew Gilbert
- Department of Emergency Medicine, HCA Houston Healthcare-Kingwood, Kingwood, TexasUSA
| | - Kelly Rogers Keene
- Baylor College of Medicine, Department of Emergency Medicine, Houston, TexasUSA
| | - Casey Patrick
- Montgomery County Hospital District EMS, Conroe, TexasUSA
- Baylor College of Medicine, Department of Emergency Medicine, Houston, TexasUSA
- Department of Emergency Medicine, HCA Houston Healthcare-Kingwood, Kingwood, TexasUSA
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Shaheen NW, Wells M, Adamali HI. Letter to the Editor-The curious incident of the dog in the bath tub. QJM 2024; 117:153. [PMID: 37773986 DOI: 10.1093/qjmed/hcad221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Indexed: 10/01/2023] Open
Affiliation(s)
- N W Shaheen
- Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK
| | - M Wells
- Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK
| | - H I Adamali
- Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK
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Qin W, Wei SP, Zheng Y, Choi E, Li X, Johnston J, Wan X, Abrahamson B, Flinkstrom Z, Wang B, Li H, Hou L, Tao Q, Chlouber WW, Sun X, Wells M, Ngo L, Hunt KA, Urakawa H, Tao X, Wang D, Yan X, Wang D, Pan C, Weber PK, Jiang J, Zhou J, Zhang Y, Stahl DA, Ward BB, Mayali X, Martens-Habbena W, Winkler MKH. Ammonia-oxidizing bacteria and archaea exhibit differential nitrogen source preferences. Nat Microbiol 2024; 9:524-536. [PMID: 38297167 DOI: 10.1038/s41564-023-01593-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/15/2023] [Indexed: 02/02/2024]
Abstract
Ammonia-oxidizing microorganisms (AOM) contribute to one of the largest nitrogen fluxes in the global nitrogen budget. Four distinct lineages of AOM: ammonia-oxidizing archaea (AOA), beta- and gamma-proteobacterial ammonia-oxidizing bacteria (β-AOB and γ-AOB) and complete ammonia oxidizers (comammox), are thought to compete for ammonia as their primary nitrogen substrate. In addition, many AOM species can utilize urea as an alternative energy and nitrogen source through hydrolysis to ammonia. How the coordination of ammonia and urea metabolism in AOM influences their ecology remains poorly understood. Here we use stable isotope tracing, kinetics and transcriptomics experiments to show that representatives of the AOM lineages employ distinct regulatory strategies for ammonia or urea utilization, thereby minimizing direct substrate competition. The tested AOA and comammox species preferentially used ammonia over urea, while β-AOB favoured urea utilization, repressed ammonia transport in the presence of urea and showed higher affinity for urea than for ammonia. Characterized γ-AOB co-utilized both substrates. These results reveal contrasting niche adaptation and coexistence patterns among the major AOM lineages.
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Affiliation(s)
- Wei Qin
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA.
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA.
| | - Stephany P Wei
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Yue Zheng
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, China
| | - Eunkyung Choi
- Department of Microbiology and Cell Science, Fort Lauderdale Research and Education Center, University of Florida, Davie, FL, USA
| | - Xiangpeng Li
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | | | - Xianhui Wan
- Department of Geosciences, Princeton University, Princeton, NJ, USA
| | - Britt Abrahamson
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Zachary Flinkstrom
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Baozhan Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Hanyan Li
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Lei Hou
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, China
| | - Qing Tao
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Wyatt W Chlouber
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Xin Sun
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
| | - Michael Wells
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Long Ngo
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Kristopher A Hunt
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Hidetoshi Urakawa
- Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, USA
| | - Xuanyu Tao
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Dongyu Wang
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Xiaoyuan Yan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Dazhi Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, China
| | - Chongle Pan
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Peter K Weber
- Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Jiandong Jiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Jizhong Zhou
- School of Biological Sciences, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, USA
| | - Yao Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - David A Stahl
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Bess B Ward
- Department of Geosciences, Princeton University, Princeton, NJ, USA
| | - Xavier Mayali
- Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Willm Martens-Habbena
- Department of Microbiology and Cell Science, Fort Lauderdale Research and Education Center, University of Florida, Davie, FL, USA.
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Shih RD, Solano JJ, Engstrom G, Khazem M, Clayton LM, Wells M, Hughes PG, Posaw L, Goldstein L, Hennekens CH, Ouslander JG, Alter SM. Lack of patient and primary care physician follow-up in geriatric emergency department patients with head trauma from a fall. Am J Emerg Med 2024; 75:29-32. [PMID: 37897917 DOI: 10.1016/j.ajem.2023.10.021] [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: 06/01/2023] [Revised: 09/30/2023] [Accepted: 10/08/2023] [Indexed: 10/30/2023] Open
Abstract
STUDY OBJECTIVE Falls are the leading cause of injuries in the US for older adults. Follow-up after an ED-related fall visit is essential to initiate preventive strategies in these patients who are at very high risk for recurrent falls. It is currently unclear how frequently follow-up occurs and whether preventive strategies are implemented. Our objective is to determine the rate of follow-up by older adults who sustain a fall related head injury resulting in an ED visit, the rate and type of risk assessment and adoption of preventive strategies. METHODS This 1-year prospective observational study was conducted at two South Florida hospitals. All older ED patients with an acute head injury due to a fall were identified. Telephone surveys were conducted 14 days after ED presentation asking about PCP follow-up and adoption of fall prevention strategies. Clinical and demographic characteristics were compared between patients with and without follow up. RESULTS Of 4951 patients with a head injury from a fall, 1527 met inclusion criteria. 905 reported follow-up with their PCP. Of these, 72% reported receiving a fall assessment and 56% adopted a fall prevention strategy. Participants with PCP follow-up were significantly more likely to have a history of cancer or hypertension. CONCLUSION Only 60% of ED patients with fall-related head injury follow-up with their PCP. Further, 72% received a fall assessment and only 56% adopted a fall prevention strategy. These data indicate an urgent need to promote PCP fall assessment and adoption of prevention strategies in these patients.
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Affiliation(s)
- Richard D Shih
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America; Depatment of Emergency Medicine, Delray Medical Center, United States of America.
| | - Joshua J Solano
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America; Depatment of Emergency Medicine, Delray Medical Center, United States of America; Depatment of Emergency Medicine, Bethesda Hospital East, United States of America
| | - Gabriella Engstrom
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America
| | - Maya Khazem
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America
| | - Lisa M Clayton
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America; Depatment of Emergency Medicine, Delray Medical Center, United States of America; Depatment of Emergency Medicine, Bethesda Hospital East, United States of America
| | - Michael Wells
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America
| | - Patrick G Hughes
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America; Depatment of Emergency Medicine, Delray Medical Center, United States of America; Depatment of Emergency Medicine, Bethesda Hospital East, United States of America
| | - Leila Posaw
- Depatment of Emergency Medicine, Bethesda Hospital East, United States of America
| | - Lara Goldstein
- Department of Emergency Medicine, Aventura Medical Center, United States of America
| | - Charles H Hennekens
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America
| | - Joseph G Ouslander
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America
| | - Scott M Alter
- Florida Atlantic University, Charles E. Schmidt College of Medicine, United States of America; Depatment of Emergency Medicine, Delray Medical Center, United States of America; Depatment of Emergency Medicine, Bethesda Hospital East, United States of America
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Wu D, Jansen-van Vuuren RD, Dasgupta A, Al-Qazazi R, Chen KH, Martin A, Mewburn JD, Alizadeh E, Lima PDA, Jones O, Colpman P, Breault NM, Emon IM, Jedlovčnik L, Zhao YY, Wells M, Sutendra G, Archer SL. Efficacy of Drpitor1a, a Dynamin-Related Protein 1 inhibitor, in Pulmonary Arterial Hypertension. bioRxiv 2023:2023.12.21.572836. [PMID: 38187628 PMCID: PMC10769396 DOI: 10.1101/2023.12.21.572836] [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] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Rationale Dynamin-related protein 1 (Drp1), a large GTPase, mediates mitochondrial fission. Increased Drp1-mediated fission permits accelerated mitosis, contributing to hyperproliferation of pulmonary artery smooth muscle cells (PASMC), which characterizes pulmonary arterial hypertension (PAH). We developed a Drp1 inhibitor, Drpitor1a, and tested its ability to regress PAH. Objectives Assess Drpitor1a's efficacy and toxicity in: a)normal and PAH human PASMC (hPASMC); b)normal rats versus rats with established monocrotaline (MCT)-induced PAH. Methods Drpitor1a's effects on recombinant and endogenous Drp1-GTPase activity, mitochondrial fission, and cell proliferation were studied in hPASMCs (normal=3; PAH=5). Drpitor1a's pharmacokinetics and tissue concentrations were measured (n=3 rats/sex). In a pilot study (n=3-4/sex/dose), Drpitor1a (1mg/kg/48-hours, intravenous) reduced adverse PA remodeling only in females. Consequently, we compared Drpitor1a to vehicle in normal (n=6 versus 8) and MCT-PAH (n=9 and 11) females, respectively. Drpitor1a treatment began 17-days post-MCT with echocardiography and cardiac catheterization performed 28-29 days post-MCT. Results Drpitor1a inhibited recombinant and endogenous Drp1 GTPase activity, which was increased in PAH hPASMC. Drpitor1a inhibited mitochondrial fission and proliferation and induced apoptosis, in PAH hPASMC but not normal hPASMC. Drpitor1a tissue levels were higher in female versus male RVs. In MCT-PAH females, Drpitor1a regressed PA obstruction, lowered pulmonary vascular resistance, and improved RV function, without hematologic, renal, or hepatic toxicity. Conclusions Drpitor1a inhibits Drp1 GTPase, reduces mitochondrial fission, and inhibits cell proliferation in PAH hPASMC. Drpitor1a caused no toxicity in MCT-PAH and had no significant effect on normal rats or hPASMCs. Drpitor1a is a potential PAH therapeutic which displays an interesting therapeutic sexual dimorphism.
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Wu SS, Wells M, Ascha M, Gatherwright J, Chepla KJ. Upper Extremity Wounds Treated with Biodegradable Temporizing Matrix versus Collagen-Chondroitin Silicone Bilayer. J Hand Microsurg 2023; 15:340-350. [PMID: 38152680 PMCID: PMC10751194 DOI: 10.1055/s-0042-1749077] [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] [Indexed: 10/18/2022] Open
Abstract
Objective This study aims to compare outcomes between Novosorb Biodegradable Temporizing Matrix (BTM) and Integra collagen-chondroitin silicone for upper-extremity wound reconstruction. Methods This retrospective study analyzed adult patients who underwent wound reconstruction with either BTM or Integra at our institution between 2015 and 2020. Results Forty-eight patients were included: 31 (64.6%) BTM and 17 (35.4%) Integra. Mean age was 44.0 (range: 18-68) years. Age, race, sex, smoking, comorbidities, and defect size were similar between groups. Wound etiologies included 12 (25.0%) burn, 22 (45.8%) trauma, and others. Median template size was 133 cm 2 for BTM and 104 cm 2 for Integra ( p = 0.526). Skin grafting was performed after 14 (45.2%) and 14 (82.4%) wounds treated with BTM and Integra, respectively ( p = 0.028). Template complications of infection and dehiscence were comparable. Skin-graft complications occurred in five (35.7%) and three (21.4%) wounds in BTM and Integra, respectively ( p = 0.031). Skin-graft failure rates were comparable ( p = 0.121). Mean number of secondary procedures required after template placement was higher in the Integra group (BTM, 1.0; Integra, 1.9; p = 0.090). Final healing was achieved in 17 (54.8%) BTM and 11 (64.7%) Integra wounds ( p = 0.694). Median time to healing was 4.1 months after BTM and 2.6 months after Integra placement ( p = 0.014). Conclusion Compared with Integra, BTM achieved comparable wound healing and complication rates. Fewer secondary procedures and skin grafts were observed in BTM wounds, likely as a result of the coronavirus disease 2019 pandemic. At our institution, 100 cm 2 of product costs $850 for BTM and $3,150 for Integra, suggesting BTM as an economical alternative to fulfill the high functional and aesthetic requirements of upper-extremity wounds.
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Affiliation(s)
- Shannon S. Wu
- Department of Education, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio, United States
| | - Michael Wells
- Department of Education, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States
| | - Mona Ascha
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States
| | - James Gatherwright
- Division of Plastic Surgery, Department of Surgery, Cleveland Clinic Akron General, Akron, Ohio, United States
| | - Kyle J. Chepla
- Division of Plastic Surgery, Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio, United States
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Doble N, Wells-Gray EM, Wells M, Choi SS. Foveal cone loss in tamoxifen maculopathy: a case report. J Med Case Rep 2023; 17:464. [PMID: 37936226 PMCID: PMC10631118 DOI: 10.1186/s13256-023-04199-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 10/02/2023] [Indexed: 11/09/2023] Open
Abstract
BACKGROUND Tamoxifen is used in low dose concentrations (20-40 mg per day) as a therapy for breast cancer but is known to have ocular side effects. In this case report, the foveal cone integrity in a tamoxifen-treated patient who complained of a small central scotoma in the left eye while reading was examined using high resolution adaptive optics imaging. CASE PRESENTATION Both eyes of a 54-year-old Caucasian, non-hispanic female who had been treated with tamoxifen for 1.5 years were examined using various imaging modalities including fundus photography, fundus autofluorescence, fluorescein angiography, spectral-domain optical coherence tomography, and adaptive optics scanning laser ophthalmoscopy. Clinical spectral-domain optical coherence tomography showed a very small disruption to the photoreceptor layer at the fovea in the left eye only. However, adaptive optics scanning laser ophthalmoscopy imaging revealed foveal cone loss in both eyes, but to a lesser extent in the right eye. Inner retinal changes were not observed in either eye. CONCLUSION The area of cone loss was similar in size to a single newsprint letter when projected onto the retina, matching the patient's description of a scotoma in the left eye. Given the isolated loss of foveal cone photoreceptors with the absence of previously reported inner retinal and vascular changes, our results may indicate the earliest retinal changes associated with tamoxifen retinopathy.
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Affiliation(s)
- Nathan Doble
- College of Optometry, The Ohio State University, 338 W 10Th Ave, Columbus, OH, 43210, USA.
- Department of Ophthalmology and Vision Science, Havener Eye Institute, The Ohio State University, 915 Olentangy River Road, Columbus, OH, 43212, USA.
| | - Elaine M Wells-Gray
- College of Optometry, The Ohio State University, 338 W 10Th Ave, Columbus, OH, 43210, USA
- Lumata Health, 1111 N. Lee Ave., Suite 210, Oklahoma, OK, 97103, USA
| | - Michael Wells
- Department of Ophthalmology and Vision Science, Havener Eye Institute, The Ohio State University, 915 Olentangy River Road, Columbus, OH, 43212, USA
| | - Stacey S Choi
- College of Optometry, The Ohio State University, 338 W 10Th Ave, Columbus, OH, 43210, USA
- Department of Ophthalmology and Vision Science, Havener Eye Institute, The Ohio State University, 915 Olentangy River Road, Columbus, OH, 43212, USA
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DeLeonibus A, Patel V, Zelko I, Wells M, Maasarani S, Bahat D, Kotha V, Bassiri Gharb B, Rampazzo A. TikTok Famous: Can One Viral Video Affect Your Plastic Surgery Practice? Plast Reconstr Surg 2023; 152:966e-968e. [PMID: 37871030 DOI: 10.1097/prs.0000000000010792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Affiliation(s)
- Anthony DeLeonibus
- Department of Plastic and Reconstructive Surgery, Cleveland Clinic Foundation, Cleveland, OH
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Holm L, Wells M. Reliable retrieval is intrinsically rewarding: Recency, item difficulty, study session memory, and subjective confidence predict satisfaction in word-pair recall. PLoS One 2023; 18:e0292866. [PMID: 37856440 PMCID: PMC10586604 DOI: 10.1371/journal.pone.0292866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 10/02/2023] [Indexed: 10/21/2023] Open
Abstract
The recall of a distant memory may appear satisfying and suggest successful retrieval is inherently rewarding. If the brain incentivizes retrieval attempts on the prospect of an internal retrieval reward, then the desire for that reward might natively reinforce declarative memory access. But what determines the level of retrieval satisfaction? We tested the idea that retrieval attempt uncertainty drives retrieval satisfaction. For instance, the more distant the memory, the more satisfying should it be to successfully retrieve it. Alternatively, the brain issues rewards based on the level of confidence in recall independent of the recall achievement. If so, then more confident retrieval is also more satisfying. In an online experiment containing five Swahili-English word pair study sessions spaced across one week, we tested 30 English-speaking participants' recall satisfaction and memory confidence during learning as well as in a final cued recall test. We hypothesized that retrieval satisfaction should either increase or decrease with retrieval uncertainty as indicated by time since encoding, and how little in overall they recalled from the session. We found that retrieval satisfaction decreased with time since encoding and with study session retrieval performance. Moreover, we found that retrieval confidence and satisfaction ratings were highly related in the experiment. We also found a reliable interaction between confidence and word difficulty indicating that confidently recalled difficult items induced more satisfaction. Thus, the brain appears to reward both retrieval confidence and to a lesser extent, fruitful retrieval effort. Our findings may explain seemingly irrational self-regulated study behavior such as avoiding learning-efficient but difficult training protocols, as effects of a system rationally seeking to accrue intrinsic cognitive reward.
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Affiliation(s)
- Linus Holm
- Department of Psychology, Umeå University, Umeå, Sweden
| | - Michael Wells
- Department of Psychology, Umeå University, Umeå, Sweden
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Wells M, Kim M, Akob DM, Basu P, Stolz JF. Impact of the Dimethyl Sulfoxide Reductase Superfamily on the Evolution of Biogeochemical Cycles. Microbiol Spectr 2023; 11:e0414522. [PMID: 36951557 PMCID: PMC10100899 DOI: 10.1128/spectrum.04145-22] [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: 10/14/2022] [Accepted: 03/01/2023] [Indexed: 03/24/2023] Open
Abstract
The dimethyl sulfoxide reductase (or MopB) family is a diverse assemblage of enzymes found throughout Bacteria and Archaea. Many of these enzymes are believed to have been present in the last universal common ancestor (LUCA) of all cellular lineages. However, gaps in knowledge remain about how MopB enzymes evolved and how this diversification of functions impacted global biogeochemical cycles through geologic time. In this study, we perform maximum likelihood phylogenetic analyses on manually curated comparative genomic and metagenomic data sets containing over 47,000 distinct MopB homologs. We demonstrate that these enzymes constitute a catalytically and mechanistically diverse superfamily defined not by the molybdopterin- or tungstopterin-containing [molybdopterin or tungstopterin bis(pyranopterin guanine dinucleotide) (Mo/W-bisPGD)] cofactor but rather by the structural fold that binds it in the protein. Our results suggest that major metabolic innovations were the result of the loss of the metal cofactor or the gain or loss of protein domains. Phylogenetic analyses also demonstrated that formate oxidation and CO2 reduction were the ancestral functions of the superfamily, traits that have been vertically inherited from the LUCA. Nearly all of the other families, which drive all other biogeochemical cycles mediated by this superfamily, originated in the bacterial domain. Thus, organisms from Bacteria have been the key drivers of catalytic and biogeochemical innovations within the superfamily. The relative ordination of MopB families and their associated catalytic activities emphasize fundamental mechanisms of evolution in this superfamily. Furthermore, it underscores the importance of prokaryotic adaptability in response to the transition from an anoxic to an oxidized atmosphere. IMPORTANCE The MopB superfamily constitutes a repertoire of metalloenzymes that are central to enduring mysteries in microbiology, from the origin of life and how microorganisms and biogeochemical cycles have coevolved over deep time to how anaerobic life adapted to increasing concentrations of O2 during the transition from an anoxic to an oxic world. Our work emphasizes that phylogenetic analyses can reveal how domain gain or loss events, the acquisition of novel partner subunits, and the loss of metal cofactors can stimulate novel radiations of enzymes that dramatically increase the catalytic versatility of superfamilies. We also contend that the superfamily concept in protein evolution can uncover surprising kinships between enzymes that have remarkably different catalytic and physiological functions.
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Affiliation(s)
- Michael Wells
- Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, Colorado, USA
| | - Minjae Kim
- Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, Colorado, USA
| | - Denise M. Akob
- United States Geological Survey, Geology, Energy, and Minerals Science Center, Reston, Virginia, USA
| | - Partha Basu
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University, Indianapolis, Indiana, USA
| | - John F. Stolz
- Department of Biological Sciences, Duquesne University, Pittsburgh, Pennsylvania, USA
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Chakraborty A, Perez M, Carroll JD, Antonopoulos A, Dell A, Ortega L, Mohammed NBB, Wells M, Staudinger C, Griswold A, Chandler KB, Marrero C, Jimenez R, Tani Y, Wilmott JS, Thompson JF, Wang W, Sackstein R, Scolyer RA, Murphy GF, Haslam SM, Dimitroff CJ. Hypoxia Controls the Glycome Signature and Galectin-8-Ligand Axis to Promote Protumorigenic Properties of Metastatic Melanoma. J Invest Dermatol 2023; 143:456-469.e8. [PMID: 36174713 PMCID: PMC10123958 DOI: 10.1016/j.jid.2022.07.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 06/29/2022] [Accepted: 07/14/2022] [Indexed: 01/14/2023]
Abstract
The prognosis for patients with metastatic melanoma (MM) involving distant organs is grim, and treatment resistance is potentiated by tumor-initiating cells (TICs) that thrive under hypoxia. MM cells, including TICs, express a unique glycome featuring i-linear poly-N-acetyllactosamines through the loss of I-branching enzyme, β1,6 N-acetylglucosaminyltransferase 2. Whether hypoxia instructs MM TIC development by modulating the glycome signature remains unknown. In this study, we explored hypoxia-dependent alterations in MM glycome‒associated genes and found that β1,6 N-acetylglucosaminyltransferase 2 was downregulated and a galectin (Gal)-8-ligand axis, involving both extracellular and cell-intrinsic Gal-8, was induced. Low β1,6 N-acetylglucosaminyltransferase 2 levels correlated with poor patient outcomes, and patient serum samples were elevated for Gal-8. Depressed β1,6 N-acetylglucosaminyltransferase 2 in MM cells upregulated TIC marker, NGFR/CD271, whereas loss of MM cell‒intrinsic Gal-8 markedly lowered NGFR and reduced TIC activity in vivo. Extracellular Gal-8 bound preferentially to i-linear poly-N-acetyllactosamines on N-glycans of the TIC marker and prometastatic molecule CD44, among other receptors, and activated prosurvival factor protein kinase B. This study reveals the importance of hypoxia governing the MM glycome by enforcing i-linear poly-N-acetyllactosamine and Gal-8 expression. This mechanistic investigation also uncovers glycome-dependent regulation of pro-MM factor, NGFR, implicating i-linear poly-N-acetyllactosamine and Gal-8 as biomarkers and therapeutic targets of MM.
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Affiliation(s)
- Asmi Chakraborty
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Mariana Perez
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Jordan D Carroll
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | | | - Anne Dell
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Liettel Ortega
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Norhan B B Mohammed
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA; Department of Medical Biochemistry, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Michael Wells
- School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Caleb Staudinger
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Anthony Griswold
- John P. Hussman Institute for Human Genomics (HIHG), Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Kevin B Chandler
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Cristina Marrero
- Miami Cancer Institute, Baptist Health-South Florida, Miami, Florida, USA
| | - Ramon Jimenez
- Miami Cancer Institute, Baptist Health-South Florida, Miami, Florida, USA
| | - Yoshihiko Tani
- Japanese Red Cross Kinki Block Blood Center, Osaka, Japan
| | - James S Wilmott
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia
| | - John F Thompson
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, Australia; Department of Melanoma and Surgical Oncology, Royal Prince Alfred Hospital, Sydney, Australia
| | - Wei Wang
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachussetts, USA
| | - Robert Sackstein
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Richard A Scolyer
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, Australia; Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital and NSW Health Pathology, Sydney, Australia; Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - George F Murphy
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Stuart M Haslam
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Charles J Dimitroff
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA.
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12
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Wells M, Raja M, Rahman S. Corrigendum to 'Point-of-care viscoelastic testing' [BJA Education 22 (2022) 416-423]. BJA Educ 2023; 23:118-119. [PMID: 36844441 PMCID: PMC9947957 DOI: 10.1016/j.bjae.2022.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
[This corrects the article DOI: 10.1016/j.bjae.2022.07.003.].
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Affiliation(s)
- M. Wells
- Barts Health NHS Trust, London, UK
| | - M. Raja
- Royal Free London NHS Foundation Trust, London, UK
| | - S. Rahman
- Royal Free London NHS Foundation Trust, London, UK
- Corresponding author:
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13
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Gastanadui M, Litovsky S, Margarolli C, Richter RP, Want D, Xing D, Wells M, Gaggar A, Nanda V, Patel R, Payne G. A spatial transcriptomic approach to understanding coronary atherosclerotic plaque stability. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00011-3] [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: 01/28/2023]
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14
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Soong W, Patil D, Pivneva I, Signorovitch J, Wells M, Balp MM, Kuruvilla M. Clinical Features Associated with a Treatment-Refractory Phenotype in Chronic Spontaneous Urticaria (CSU). J Allergy Clin Immunol 2023. [DOI: 10.1016/j.jaci.2022.12.436] [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: 02/05/2023]
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15
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Warner BE, Harry A, Wells M, Brett SJ, Antcliffe DB. 1175 WAS ICU RIGHT FOR YOU? AN EXPLORATORY QUALITATIVE STUDY OF PATIENTS >=65 YRS AND NEXT OF KIN IN COVID-19: THE ESCALATE STUDY. Age Ageing 2023. [DOI: 10.1093/ageing/afac322.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Abstract
Introduction
The decision to admit an older patient to the intensive care unit (ICU) should reflect shared goals of care. Resource limitations during the Covid-19 pandemic highlighted challenges in selecting candidates for escalation. Patients and next of kin (NoK) who have experienced ICU are well-placed to reflect on whether the admission was right for them.
Objective
To explore older patients’ (>65 years) and their loved ones’ views on escalation decision making.
Methods
Qualitative study involving semi-structured interviews with patients, NoK of survivors and NoK of deceased who experienced UK ICU admission with Covid-19 respiratory failure between March 2020 and February 2021. A preliminary questionnaire was used to maximise sample diversity of age, sex, ethnicity, survival, decision regret and impact of event scores. Interview data were collected via video conferencing or telephone. Transcripts were analysed using framework analysis. Results 30 participants were interviewed.
Results
Five themes were identified: ‘Inevitability’ - a sense that the illness and its management are out of the control of the patient or their loved one; ‘Disconnect’ - differences between hospital and lay person narratives; challenges to bridging that gap included effective communication aided by technology; ‘Acceptance’ - of the consequences, good or bad, of an intensive care admission as unalterable; ‘Beyond comprehension’ - participants had not contemplated ill health or ICU prior to admission and even with the benefit of hindsight struggled to describe which potential outcomes would be acceptable or unacceptable if they needed to be involved in similar decision-making around escalation in the future; ‘Covid-19’ - unique impact of a pandemic.
Conclusion
This study, which includes bereaved NoK as well as patients and NoK of survivors, adds perspective to inform decision making regarding treatment escalation of older people.
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Affiliation(s)
- B E Warner
- Imperial College Healthcare NHS Trust , London, UK
- Imperial College London , London, UK
| | - A Harry
- Imperial College London , London, UK
- Royal Free London NHS Foundation Trust , London, UK
| | - M Wells
- Imperial College London , London, UK
- Imperial College Healthcare NHS Trust Directorate of Nursing, , London, UK
| | - S J Brett
- Imperial College Healthcare NHS Trust , London, UK
- Imperial College London , London, UK
| | - D B Antcliffe
- Imperial College Healthcare NHS Trust , London, UK
- Imperial College London , London, UK
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16
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Kim M, Rhee C, Wells M, Shin J, Lee J, Shin SG. Key players in syntrophic propionate oxidation revealed by metagenome-assembled genomes from anaerobic digesters bioaugmented with propionic acid enriched microbial consortia. Front Microbiol 2022; 13:968416. [DOI: 10.3389/fmicb.2022.968416] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 10/20/2022] [Indexed: 11/18/2022] Open
Abstract
Propionic acid (HPr) is frequently accumulated in anaerobic digesters due to its thermodynamically unfavorable degradation reaction. Here, we identify key players in HPr oxidation and organic overloading recovery from metagenome-assembled genomes (MAGs) recovered from anaerobic digesters inoculated with HPr-enriched microbial consortia before initiating organic overloading. Two independent HPr-enrichment cultures commonly selected two uncultured microorganisms represented with high relative abundance: Methanoculleus sp002497965 and JABUEY01 sp013314815 (a member of the Syntrophobacteraceae family). The relative abundance of JABUEY01 sp013314815 was 60 times higher in bioaugmented bioreactors compared to their unaugmented counterparts after recovery from organic overloading. Genomic analysis of JABUEY01 sp013314815 revealed its metabolic potential for syntrophic propionate degradation when partnered with hydrogenotrophic methanogens (e.g., Methanoculleus sp002497965) via the methylmalonyl-CoA pathway. Our results identified at least two key species that are responsible for efficient propionate removal and demonstrate their potential applications as microbial cocktails for stable AD operation.
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17
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Castro AV, Herrgott G, Asmaro K, Wells M, Sabedot T, Barnholtz-Sloan J, Sloan A, Selman W, Noushmehr H, Rock J. ODP653 DNA Methylation Markers Detected in Liquid Biopsy Specimens Differentiate Pituitary Neuroendocrine Tumors from Other Sellar and CNS Diseases. J Endocr Soc 2022. [PMCID: PMC9625445 DOI: 10.1210/jendso/bvac150.1086] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Background DNA methylation abnormalities are pervasive in pituitary neuroendocrine tumors (PitNETs). The feasibility to detect these molecular alterations in circulating cell-free DNA (cfDNA) has been reported for several central nervous system tumors but not across PitNETs. Hypothesis PitNET-specific methylation signatures detected in liquid biopsy specimens differentiate PitNETs from other sellar diseases. Method We profiled the cfDNA methylome (EPIC array) of 44 serum and 34 plasma liquid biopsy (LB) specimens from patients with PitNETs and other CNS (craniopharyngiomas, other pituitary diseases, gliomas, meningiomas) or nontumor conditions, grouped as non-PitNET. Results Our results indicated that, despite quantitative and qualitative differences between serum and plasma cfDNA composition, both sources of LB showed that patients with PitNETs presented a distinct methylome landscape compared to non-PitNETs. In addition, LB methylome captured epigenetic features reported in PitNET tissue. Using LB-derived PitNETs-specific signatures as input into a machine-learning algorithm, we generated a score that distinguished PitNETs from other pituitary and CNS diseases with high accuracy in an independent set. Conclusions Our results underpin the potential application of a methylation-based LB as a noninvasive approach to identify clinically relevant epigenetic markers to diagnose and potentially impact the management of patients with PitNETs. Presentation: No date and time listed
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18
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Wells M, Raja M, Rahman S. Point-of-care viscoelastic testing. BJA Educ 2022; 22:416-423. [PMID: 36304915 PMCID: PMC9596284 DOI: 10.1016/j.bjae.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 10/31/2022] Open
Affiliation(s)
- M. Wells
- Barts Health NHS Trust, London, UK
| | - M. Raja
- Royal Free London NHS Foundation Trust, London, UK
| | - S. Rahman
- Royal Free London NHS Foundation Trust, London, UK
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19
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Wells M, Hempel J, Adhikari S, Wang Q, Allen D, Costello A, Bowen C, Parkin S, Sutton C, Huckaba AJ. Structure and Piezoelectricity Due to B Site Cation Variation in AB n+Cl n+2 Hybrid Histammonium Chlorometallate Materials. Inorg Chem 2022; 61:17746-17758. [DOI: 10.1021/acs.inorgchem.2c02994] [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: 11/29/2022]
Affiliation(s)
- Michael Wells
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jacob Hempel
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Santosh Adhikari
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Qingping Wang
- Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Daniel Allen
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Alison Costello
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Chris Bowen
- Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Christopher Sutton
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Aron J. Huckaba
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
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20
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Wells M, Seage H. Social support and poverty alleviation among asylum-seekers and refugees in Wales. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac130.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Wales is working toward being a Nation of Sanctuary for asylum-seekers and refugees and has resettled between 6,000 and 10,000 refugees since 2001. Uprooted social support networks during the period of asylum-seeking process predispose this population to poverty. The aim of this research was to explore the role of social support among asylum-seekers and refugees in alleviating poverty and its adverse impact on their health and wellbeing. Understanding the importance of social support in promoting the health and wellbeing of asylum-seekers and refugees is a critical factor for informing public health interventions and policies to improve outcomes for tackling poverty among this population in Wales.
Methods
A qualitative research method, based on social support framework, was adopted. Semi-structured interviews were utilised to collect data from a purposive sample of 8 participants. All the participants were recruited through a refugee support organisation in Cardiff, Wales and were interviewed in the community hub of this organisation. The interviews were digitally recorded, transcribed and analysed using Interpretative Phenomenological Analysis (IPA).
Results
Results show two formal (government, charities) and three informal (family, friends, and peers) sources of social support as the potential pathways that alleviate the impact of poverty on the health and wellbeing of asylum-seekers and refugees. These sources provide access to language courses, education, employment, housing, food, and sense of belonging in the new communities of resettlement.
Conclusions
Enhancing access to formal and informal sources of social support is of vital importance to tackling the pernicious impact of poverty on the health and wellbeing of asylum-seekers and refugees. Providing social support for this population should be given uttermost consideration for public health interventions and policy decisions in an effort to protect and promote their health and wellbeing.
Key messages
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Affiliation(s)
- M Wells
- Psychology, Cardiff Metropolitan University , Cardiff, UK
| | - H Seage
- Psychology, Cardiff Metropolitan University , Cardiff, UK
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21
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Arana E, Mohamed M, Culakova E, Tylock R, Wells M, Flannery M, Mustian K, Cupertino A, Magnuson A, Mohile S. Patient-reported pain augments Common Terminology Criteria for Adverse Events (CTCAEs) to detect pain in older adults with advanced cancer receiving treatment. J Geriatr Oncol 2022. [DOI: 10.1016/s1879-4068(22)00312-5] [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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22
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Pakzad-Shahabi L, Tallant J, Le Calvez K, Wells M, Williams M. P08.13.A CaPaBLE - Assessing the Patient Generated Index Methodology in High Grade Glioma Patients and Caregivers. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
CaPaBLE tests the feasibility and acceptability of assessing quality of life (QoL) using the patient-, or caregiver-generated index (PGI/CaGI) methodology in patients with HGG and their caregivers.
Material and Methods
CaPaBLE, (https://www.isrctn.com/ISRCTN45555598), followed patients and/ or their caregivers up to 6 months. Standard measures for patients were EORTC QLQ-C30/BN20, for caregivers the CarGOQOL questionnaire. The QoL topics raised through PGI/CaGI have been coded to the most relevant domain from their respective standard measure for an initial assessment of concordance.
Results
36 patients, 24 caregivers recruited to study; completing an average of 3 study assessment timepoints. PGI and CaGI generated 240 and 160 topics respectively. Patient concerns most frequently coded to EORTC domain of Role Functioning; Caregiver concerns mostly coded to CarGOQOL domain of Burden. Other topics frequently raised by patients such as the driving and sex life, and future planning by caregivers are not specifically raised in standard questionnaires.
Conclusion
Nearly all topics raised by patients and caregivers were mapped to the domains of their respective standard QoL measure. However, almost half of all topics raised by patients and caregivers mapped to a minority of the domains included in standard measures; whilst a notable number of topics are not specifically included in standard measures at all. This raises questions regarding the efficiency and relevance of such questionnaires to patient and caregivers’ daily lives.
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Affiliation(s)
- L Pakzad-Shahabi
- Computational Oncology Laboratory, Department of Surgery & Cancer, Imperial College London , London , United Kingdom
| | - J Tallant
- Division of Cancer, Charing Cross Hospital, Imperial College Healthcare NHS Trust , London , United Kingdom
| | - K Le Calvez
- Department of Radiotherapy, Charing Cross Hospital, Imperial College Healthcare NHS Trust , London , United Kingdom
| | - M Wells
- Division of Cancer, Charing Cross Hospital, Imperial College Healthcare NHS Trust , London , United Kingdom
| | - M Williams
- Computational Oncology Laboratory, Department of Surgery & Cancer, Imperial College London , London , United Kingdom
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23
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Wu SS, Wells M, Ascha M, Duggal R, Gatherwright J, Chepla K. Head and Neck Wound Reconstruction Using Biodegradable Temporizing Matrix Versus Collagen-Chondroitin Silicone Bilayer. Eplasty 2022; 22:e31. [PMID: 36000010 PMCID: PMC9361342] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Head and neck reconstruction is challenging because of the functional requirements of movement, sensation, and cosmesis of this highly visible region. This study is the first to compare Novosorb biodegradable temporizing matrix (BTM) and Integra collagen-chondroitin silicone (CCS) skin substitutes for reconstruction of soft tissue head and neck wounds. METHODS This retrospective review included adults who underwent wound reconstruction of the head/neck with either BTM or CCS between 2015 and 2020. Patient-level data, complications, and closure rates were compared. RESULTS The review identified 15 patients: 5 who received BTM and 10 who received CCS. Mean age at dermal template placement was 55 (range, 28-79) years. Race, sex, smoking status, medical comorbidities, defect size, radiation history, prior surgeries, and follow-up time were not significantly different between groups. Wound etiologies for BTM and CCS included burn (40% vs 60%), trauma (20% vs 20%), surgical wounds (20% vs 20%), and skin cancer (20% vs 0%), respectively (P = .026). Skin grafts were placed in 8 (80%) wounds after CCS placement, compared with 3 (60%) after BTM (P = .670). Template reapplication was required in 2 (40%) BTM wounds and 3 (30%) CCS wounds (P = 1.0). Infection, hematoma, and seroma were comparable between groups, although skin graft failure was higher in the CCS group at 3 (37.5%) compared with 0 for BTM (P = .506). More secondary procedures were required after CCS placement (CCS, 1.9 ± 2.2; BTM, 0.9 ± 0.8; P = .090). Definitive closure in patients not lost to follow-up occurred in 4 (100%) BTM and 6 (75%) CCS cases (P = 1.0). CONCLUSIONS Head and neck wounds treated with BTM had comparable closure and complication rates as CCS bilayer and required fewer secondary procedures and skin grafts. These findings suggest that BTM is safe and efficacious for application in head and neck wounds and may be considered as an economical alternative.
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Affiliation(s)
- Shannon S Wu
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH
| | - Michael Wells
- Case Western Reserve University School of Medicine, Cleveland, OH
| | - Mona Ascha
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Radhika Duggal
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH
| | - James Gatherwright
- Division of Plastic Surgery, Department of Surgery, Cleveland Clinic Akron General, Akron, OH
| | - Kyle Chepla
- Division of Plastic Surgery, Department of Surgery, MetroHealth Medical Center, Cleveland, OH
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Benson T, Zhan Q, Crouch J, Lian C, Smith N, Kupper T, Villani A, Wells M, Teague J, Gehad A, Gerard N, Clark R. 820 Have FOXP3, will travel: Human treg preferentially recirculate and suppress the activation of skin resident effector T cells. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.834] [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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25
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Bates AJ, Wells M, Laven RA. The effect of pre-calving injection of trace mineral supplements on periparturient disease incidence in pasture based dairy cows. Vet J 2022; 286:105867. [PMID: 35842221 DOI: 10.1016/j.tvjl.2022.105867] [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: 09/23/2021] [Revised: 07/01/2022] [Accepted: 07/11/2022] [Indexed: 12/01/2022]
Abstract
Trace minerals, have a role in immune function and a trace mineral supplement (TMS) can improve animal health in dairy herds. This prospective randomised clinical study assessed whether subcutaneous injection of 5.5 mL of TMS (40 mg zinc, 10 mg manganese, 5 mg selenium, 15 mg copper per mL), 14-28 days before planned start of calving (PSC) reduced clinical mastitis (CM), subclinical mastitis (SCM) and purulent vaginal discharge (PVD). From four farms, half of 1700 cows stratified on somatic cell count, age and breed were randomly allocated to treatment or no treatment. Occurrence of CM from - 7 to PSC + 100 days, SCM at PSC + 60 days and PVD at PSC + 24 days was analysed using survival analysis and Bayesian generalised mixed multivariable models. From -7 to PSC +30 days, TMS reduced the adjusted hazard ratio (HR) for CM at quarter and cow level (P < 0.001), with no evidence for an effect beyond 30 days. The adjusted OR (and 95% highest density interval, HDI) for the effect of TMS on CM from -7 to PSC +30 days was 0.40 (95% HDI, 0.26-0.63) at quarter level, 0.51 (95% HDI, 0.38-0.69) at cow level and for SCM, 0.72 (95% HDI, 0.54-0.95). The difference in CM incidence from TMS at the cow level was -2.0% (95% HDI, -3.4 to -1.1%) and -1.2% (95% HDI, -3.2 to - 0.6%) at quarter level. No clear effect was identified of TMS on cumulative incidence of PVD.
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Affiliation(s)
- A J Bates
- Vetlife NZ, Vetlife Scientific, 1, Waitohi-Temuka Road, Temuka 7920, New Zealand.
| | - M Wells
- Virbac New Zealand Ltd, 26-30 Maui Street, Pukete, Hamilton 3200, New Zealand
| | - R A Laven
- School of Veterinary Sciences, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
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26
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Yilmaz S, Janelsins MC, Flannery M, Culakova E, Wells M, Lin PJ, Loh KP, Epstein R, Kamen C, Kleckner AS, Norton SA, Plumb S, Alberti S, Doyle K, Porto M, Weber M, Dukelow N, Magnuson A, Kehoe LA, Nightingale G, Jensen-Battaglia M, Mustian KM, Mohile SG. Protocol paper: Multi-site, cluster-randomized clinical trial for optimizing functional outcomes of older cancer survivors after chemotherapy. J Geriatr Oncol 2022; 13:892-903. [PMID: 35292232 PMCID: PMC9283231 DOI: 10.1016/j.jgo.2022.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/01/2022] [Accepted: 03/04/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Cancer survivors over the age of 65 have unique needs due to the higher prevalence of functional and cognitive impairment, comorbidities, geriatric syndromes, and greater need for social support after chemotherapy. In this study, we will evaluate whether a Geriatric Evaluation and Management-Survivorship (GEMS) intervention improves functional outcomes important to older cancer survivors following chemotherapy. METHODS A cluster-randomized trial will be conducted in approximately 30 community oncology practices affiliated with the University of Rochester Cancer Center (URCC) National Cancer Institute Community Oncology Research Program (NCORP) Research Base. Participating sites will be randomized to the GEMS intervention, which includes Advanced Practice Practitioner (APP)-directed geriatric evaluation and management (GEM), and Survivorship Health Education (SHE) that is combined with Exercise for Cancer Patients (EXCAP©®), or usual care. Cancer survivors will be recruited from community oncology practices (of participating oncology physicians and APPs) after the enrolled clinicians have consented and completed a baseline survey. We will enroll 780 cancer survivors aged 65 years and older who have completed curative-intent chemotherapy for a solid tumor malignancy within four weeks of study enrollment. Cancer survivors will be asked to choose one caregiver to also participate for a total up to 780 caregivers. The primary aim is to compare the effectiveness of GEMS for improving patient-reported physical function at six months. The secondary aim is to compare effectiveness of GEMS for improving patient-reported cognitive function at six months. Tertiary aims include comparing the effectiveness of GEMS for improving: 1) Patient-reported physical function at twelve months; 2) objectively assessed physical function at six and twelve months; and 3) patient-reported cognitive function at twelve months and objectively assessed cognitive function at six and twelve months. Exploratory health care aims include: 1) Survivor satisfaction with care, 2) APP communication with primary care physicians (PCPs), 3) completion of referral appointments, and 4) hospitalizations at six and twelve months. Exploratory caregiver aims include: 1) Caregiver distress; 2) caregiver quality of life; 3) caregiver burden; and 4) satisfaction with patient care at six and twelve months. DISCUSSION If successful, GEMS would be an option for a standardized APP-led survivorship care intervention. TRIAL REGISTRATION ClinicalTrials.govNCT05006482, registered on August 9, 2021.
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Affiliation(s)
- S Yilmaz
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA; Geriatric Oncology Research, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA.
| | - M C Janelsins
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - M Flannery
- School of Nursing, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - E Culakova
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - M Wells
- Geriatric Oncology Research, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - P-J Lin
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - K P Loh
- Division of Hematology/Oncology, Department of Medicine, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - R Epstein
- Department of Family Medicine Research, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - C Kamen
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - A S Kleckner
- Department of Pain and Translational Symptom Science, University of Maryland School of Nursing, Baltimore, MD, USA
| | - S A Norton
- School of Nursing, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - S Plumb
- Geriatric Oncology Research, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - S Alberti
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - K Doyle
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - M Porto
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - M Weber
- Department of Neurology, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - N Dukelow
- Department of Medicine, Physical Medicine and Rehabilitation, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - A Magnuson
- Division of Hematology/Oncology, Department of Medicine, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - L A Kehoe
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - G Nightingale
- Department of Pharmacy Practice, Jefferson College of Pharmacy, Thomas Jefferson University, Philadelphia, PA, USA
| | - M Jensen-Battaglia
- Geriatric Oncology Research, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - K M Mustian
- Division of Supportive Care in Cancer, Department of Surgery, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
| | - S G Mohile
- Geriatric Oncology Research, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA; Division of Hematology/Oncology, Department of Medicine, James P Wilmot Cancer Institute, University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY, USA
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Wu SS, Wells M, Ascha M, Gatherwright J, Chepla K. Performance of biodegradable temporizing matrix vs collagen-chondroitin silicone bilayer dermal regeneration substitutes in soft tissue wound healing: a retrospective analysis. Wounds 2022; 34:106-115. [PMID: 35452408 DOI: 10.25270/wnds/2022.106115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
INTRODUCTION This study compared outcomes of soft tissue reconstruction using biodegradable temporizing matrix (BTM) and collagen-chondroitin silicone (CCS) skin substitutes. OBJECTIVE In this study, the authors compared wound healing rates and complication rates between BTM and CCS. MATERIALS AND METHODS This retrospective study reviewed outcomes for adult patients who underwent soft tissue reconstruction with either BTM or CCS skin substitutes between 2015 and 2020. Demographics, wound characteristics, surgical details, and complications were recorded. RESULTS Ninety-seven patients were included, of whom 51 (52.6%) were treated with BTM graft and 46 (47.4%) with CCS bilayer graft. The mean patient age was 48.2 years (range, 18-93 years). Wound etiologies included burn, trauma, iatrogenic, compartment syndrome, skin cancer, and osteomyelitis. The median template size was 147 cm2 and 100 cm2 for BTM and CCS, respectively (P =.337). Skin grafts were applied to 39 patients (84.8%) treated with CCS compared with 28 (54.9%) treated with BTM (P =.006); the remaining wounds healing secondarily. The template-related and skin graft-related complications of infection, dehiscence, and hematoma or seroma were comparable between groups. The rate of skin graft failure was significantly higher in the CCS cohort (n = 9 [23.1%]) compared with the BTM group (n = 1 [3.6%]) (P =.006). More secondary procedures were required after CCS placement (mean ± standard deviation, 1.9 ± 1.8; range, 0-9) than after BTM (mean, 1.0 ± 0.9; range 0-4) (P =.002). There was no statistical significance in the frequency of definitive closure between BTM and CCS (n = 31 [60.8%] vs n = 28 [60.9%], respectively; P =.655). CONCLUSIONS Compared with CCS, BTM had comparable closure and complication rates and required fewer secondary procedures and/or subsequent skin grafting.
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Affiliation(s)
- Shannon S Wu
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
| | - Michael Wells
- Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Mona Ascha
- Division of Plastic Surgery, Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio
| | - James Gatherwright
- Division of Plastic Surgery, Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio
| | - Kyle Chepla
- Case Western Reserve University School of Medicine, Cleveland, Ohio
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Lorenc A, Wells M, Fulton-Lieuw T, Nankivell P, Mehanna H, Jepson M. Clinicians' Views of Patient-initiated Follow-up in Head and Neck Cancer: a Qualitative Study to Inform the PETNECK2 Trial. Clin Oncol (R Coll Radiol) 2022; 34:230-240. [PMID: 34862101 PMCID: PMC8950325 DOI: 10.1016/j.clon.2021.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 09/01/2021] [Revised: 10/13/2021] [Accepted: 11/12/2021] [Indexed: 12/23/2022]
Abstract
AIMS Current follow-up for head and neck cancer (HNC) is ineffective, expensive and fails to address patients' needs. The PETNECK2 trial will compare a new model of patient-initiated follow-up (PIFU) with routine scheduled follow-up. This article reports UK clinicians' views about HNC follow-up and PIFU, to inform the trial design. MATERIALS AND METHODS Online focus groups with surgeons (ear, nose and throat/maxillofacial), oncologists, clinical nurse specialists and allied health professionals. Clinicians were recruited from professional bodies, mailing lists and personal contacts. Focus groups explored views on current follow-up and acceptability of the proposed PIFU intervention and randomised controlled trial design (presented by the study co-chief investigator), preferences, margins of equipoise, potential organisational barriers and thoughts about the content and format of PIFU. Data were interpreted using inductive thematic analysis. RESULTS Eight focus groups with 34 clinicians were conducted. Clinicians highlighted already known limitations with HNC follow-up - lack of flexibility to address the wide-ranging needs of HNC patients, expense and lack of evidence - and agreed that follow-up needs to change. They were enthusiastic about the PETNECK2 trial to develop and evaluate PIFU but had concerns that PIFU may not suit disengaged patients and may aggravate patient anxiety/fear of recurrence and delay detection of recurrence. Anticipated issues with implementation included ensuring a reliable route back to clinic and workload burden on nurses and allied health professionals. CONCLUSIONS Clinicians supported the evaluation of PIFU but voiced concerns about barriers to help-seeking. An emphasis on patient engagement, psychosocial issues, symptom reporting and reliable, quick routes back to clinic will be important. Certain patient groups may be less suited to PIFU, which will be evaluated in the trial. Early, meaningful, ongoing engagement with clinical teams and managers around the trial rationale and recruitment process will be important to discourage selective recruitment and address risk-averse behaviour and potential workload burden.
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Affiliation(s)
- A Lorenc
- QuinteT Research Group, Bristol Medical School, University of Bristol, Bristol, UK.
| | - M Wells
- Nursing Directorate, Imperial College Healthcare, NHS Trust / Department of Surgery and Oncology, Imperial College, London, London, UK
| | - T Fulton-Lieuw
- Institute of Head and Neck Studies and Education (InHANSE), Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - P Nankivell
- Institute of Head and Neck Studies and Education (InHANSE), Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK; University Hospitals, Birmingham NHS Foundation Trust, Birmingham, UK
| | - H Mehanna
- Institute of Head and Neck Studies and Education (InHANSE), Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK; University Hospitals, Birmingham NHS Foundation Trust, Birmingham, UK
| | - M Jepson
- QuinteT Research Group, Bristol Medical School, University of Bristol, Bristol, UK
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Taracena M, Hunt C, Pennington P, Andrew D, Jacobs-Lorena M, Dotson E, Wells M. Effective Oral RNA Interference (RNAi) Administration to Adult Anopheles gambiae Mosquitoes. J Vis Exp 2022:10.3791/63266. [PMID: 35311819 PMCID: PMC9810275 DOI: 10.3791/63266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
RNA interference has been a heavily utilized tool for reverse genetic analysis for two decades. In adult mosquitoes, double-stranded RNA (dsRNA) administration has been accomplished primarily via injection, which requires significant time and is not suitable for field applications. To overcome these limitations, here we present a more efficient method for robust activation of RNAi by oral delivery of dsRNA to adult Anopheles gambiae. Long dsRNAs were produced in Escherichia coli strain HT115 (DE3), and a concentrated suspension of heat-killed dsRNA-containing bacteria in 10% sucrose was offered on cotton balls ad-libitum to adult mosquitoes. Cotton balls were replaced every 2 days for the duration of the treatment. Use of this method to target doublesex (a gene involved in sex differentiation) or fork head (which encodes a salivary gland transcription factor) resulted in reduced target gene expression and/or protein immunofluorescence signal, as measured by quantitative Real-Time PCR (qRT-PCR) or fluorescence confocal microscopy, respectively. Defects in salivary gland morphology were also observed. This highly flexible, user-friendly, low-cost, time-efficient method of dsRNA delivery could be broadly applicable to target genes important for insect vector physiology and beyond.
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Affiliation(s)
- Mabel Taracena
- Division of Parasitic Diseases and Malaria, Entomology Branch, Centers for Disease Control and Prevention; Department of Entomology, Cornell University;
| | - Catherine Hunt
- Division of Parasitic Diseases and Malaria, Entomology Branch, Centers for Disease Control and Prevention
| | - Pamela Pennington
- Centro de Estudios en Biotecnologia, Universidad del Valle de Guatemala
| | - Deborah Andrew
- Department of Cell Biology, Johns Hopkins School of Medicine; Johns Hopkins Malaria Research Institute, Johns Hopkins Bloomberg School of Public Health
| | - Marcelo Jacobs-Lorena
- Johns Hopkins Malaria Research Institute, Johns Hopkins Bloomberg School of Public Health; Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health and Malaria Research Institute
| | - Ellen Dotson
- Division of Parasitic Diseases and Malaria, Entomology Branch, Centers for Disease Control and Prevention
| | - Michael Wells
- Johns Hopkins Malaria Research Institute, Johns Hopkins Bloomberg School of Public Health; Department of Cell Biology, Johns Hopkins School of Medicine; Biomedical Sciences Department, Idaho College of Osteopathic Medicine;
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30
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Herrgott GA, Asmaro KP, Wells M, Sabedot TS, Malta TM, Mosella MS, Nelson K, Scarpace L, Barnholtz-Sloan JS, Sloan AE, Selman WR, deCarvalho AC, Poisson LM, Mukherjee A, Robin AM, Lee IY, Snyder J, Walbert T, Rosenblum M, Mikkelsen T, Bhan A, Craig J, Kalkanis S, Rock J, Noushmehr H, Castro AV. Detection of Tumor-specific DNA Methylation Markers in the Blood of Patients with Pituitary Neuroendocrine Tumors. Neuro Oncol 2022; 24:1126-1139. [PMID: 35212383 PMCID: PMC9248407 DOI: 10.1093/neuonc/noac050] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background DNA methylation abnormalities are pervasive in pituitary neuroendocrine tumors (PitNETs). The feasibility to detect methylome alterations in circulating cell-free DNA (cfDNA) has been reported for several central nervous system (CNS) tumors but not across PitNETs. The aim of the study was to use the liquid biopsy (LB) approach to detect PitNET-specific methylation signatures to differentiate these tumors from other sellar diseases. Methods We profiled the cfDNA methylome (EPIC array) of 59 serum and 41 plasma LB specimens from patients with PitNETs and other CNS diseases (sellar tumors and other pituitary non-neoplastic diseases, lower-grade gliomas, and skull-base meningiomas) or nontumor conditions, grouped as non-PitNET. Results Our results indicated that despite quantitative and qualitative differences between serum and plasma cfDNA composition, both sources of LB showed that patients with PitNETs presented a distinct methylome landscape compared to non-PitNETs. In addition, LB methylomes captured epigenetic features reported in PitNET tissue and provided information about cell-type composition. Using LB-derived PitNETs-specific signatures as input to develop machine-learning predictive models, we generated scores that distinguished PitNETs from non-PitNETs conditions, including sellar tumor and non-neoplastic pituitary diseases, with accuracies above ~93% in independent cohort sets. Conclusions Our results underpin the potential application of methylation-based LB profiling as a noninvasive approach to identify clinically relevant epigenetic markers to diagnose and potentially impact the prognostication and management of patients with PitNETs.
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Affiliation(s)
- Grayson A Herrgott
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Karam P Asmaro
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Michael Wells
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Thais S Sabedot
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Tathiane M Malta
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Maritza S Mosella
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Kevin Nelson
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Lisa Scarpace
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Jill S Barnholtz-Sloan
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 2103 Cornell Rd, Cleveland, Ohio 44106 USA
| | - Andrew E Sloan
- Department of Neurological Surgery, University Hospitals of Cleveland, 11100 Euclid Ave., Cleveland, OH 44106 USA (EAS).,Case Comprehensive Cancer Center, 10900 Euclid Ave., Cleveland, OH 44106 USA (EAS)
| | - Warren R Selman
- Department of Neurological Surgery, University Hospitals of Cleveland, 11100 Euclid Ave., Cleveland, OH 44106 USA (EAS)
| | - Ana C deCarvalho
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Laila M Poisson
- Department of Biostatistics, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI, 48202 USA
| | - Abir Mukherjee
- Department of Pathology, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI, 48202 USA
| | - Adam M Robin
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Ian Y Lee
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - James Snyder
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Tobias Walbert
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Mark Rosenblum
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Tom Mikkelsen
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Arti Bhan
- Department of Endocrinology, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI, 48202 USA
| | - John Craig
- Department of Otolaryngology, Co-director of the Skull Base, Pituitary and Endoscopy Center
| | - Steven Kalkanis
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Jack Rock
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA
| | - Houtan Noushmehr
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
| | - Ana Valeria Castro
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, 2799 West Grand Boulevard, Detroit, MI 48202 USA.,Department of Neurosurgery, Omics Laboratory, 2799 West Grand Boulevard, Henry Ford Health System, Detroit, MI 48202 USA
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See Hoe L, Bouquet M, Hyslop K, Passmore M, Wells M, Sato K, Wilson E, Wildi K, Skeggs K, Palmeri C, Reid J, O'Neill H, Bartnikowski N, Jung J, Ainola C, Abbate G, Colombo S, Obonyo N, McDonald C, Shuker T, Heinsar S, Haymet A, Engkilde-Pedersen S, Peart J, Molenaar P, Li Bassi G, Suen J, McGiffin D, Fraser J. Post-Transplant Cardiac Contractility and Mitochondrial Function is Preserved Following 8 Hours Hypothermic Ex Vivo Perfusion in Sheep. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.547] [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: 10/16/2022]
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Jensen-Battaglia M, Lei L, Xu H, Loh K, Wells M, Tylock R, Ramsdale E, Kleckner A, Mustian K, Dunne R, Giguere J, Bearden J, Burnette B, Whitehead M, Mohile S, Wildes T. The impact of Geriatric Assessment on discussion of falls in community oncology practice: A secondary analysis of a nationwide cluster randomized trial. J Geriatr Oncol 2021. [DOI: 10.1016/s1879-4068(21)00396-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Herrgott G, Sabedot T, She R, Wells M, Asmaro K, Malta T, Mosella M, Nelson K, deCarvalho A, Poisson L, Robin A, Lee I, Snyder J, Walbert T, Kalkanis S, Rock J, Noushmehr H, Castro A. EPCO-30. MACHINE-LEARNING PREDICTIVE MODELS BASED ON DNA METHYLATION SIGNATURES DETECTED IN LIQUID BIOPSY SPECIMENS ACCURATELY PREDICT THE DIAGNOSIS AND PROGNOSIS OF MENINGIOMAS. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
Detection of distinct epigenetic features in circulating cell-free DNA (cfDNA) of liquid biopsy specimens (e.g. blood) provides an opportunity to diagnose and prognosticate central nervous system (CNS) tumors. Utilization of distinctive cell-type genome-wide DNA methylation patterns allows for development of machine-learning (ML) models with the ability to predict tumor diagnosis and prognosis, and remains widely unexplored in meningiomas using LB.
METHODS
We profiled the cfDNA methylome (EPIC array) in serum specimens from patients with meningiomas, other CNS tumors and nontumor conditions (n= 63, 190 and 18, respectively) and harnessed internal and external meningioma tissue methylome data. For diagnostic model development, we identified “meningioma specific” signatures through comparison of meningioma and non-meningioma serum specimens (Wilcoxon rank-sum test) which exhibited tissue methylation similarities named Meningioma- epigenetic Liquid Biopsy (MeLB), and were then employed to develop and cross-validate a Random-Forest derived “MeLB” score to discriminate meningiomas from the other conditions. To predict recurrence risk (RR), we classified a meningioma tissue cohort as ‘favorable’ or ‘unfavorable’ (low and high RR, respectively), using a validated ML outcome model and identified outcome-specific methylation markers with serum subgroup specificities used as input to train a Random-Forest to predict RR in serum-based specimens.
RESULTS
Prediction models based on meningioma-specific methylation markers detected in the serum presented a high accuracy in classification of samples as meningioma or not (Accuracy: 89.6%, Sensitivity: 80%, Specificity: 93.8%). The prognostic model using tissue-serum matching methylation markers was validated across an independent tissue-based cohort (Accuracy: 88%, Sensitivity: 86%, Specificity: 88%) and allowed for classification of serum samples according to RR.
CONCLUSIONS
Machine-learning models using DNA methylation markers identified in the serum can accurately diagnose and predict prognosis in patients with meningioma. After validation in an external cohort, these approaches may improve presurgical diagnosis and therapeutic management of patients with this type of tumor.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Adam Robin
- Henry Ford Health System, Detroit, MI, USA
| | - Ian Lee
- Henry Ford Health System, Detroit, MI, USA
| | | | | | | | - Jack Rock
- Henry Ford Health System, Detroit, MI, USA
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Affiliation(s)
- Mikaela Lenells
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - Ewa Andersson
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - Anna Gustafsson
- Clinical Science, Intervention and Technology, Division of Paediatrics; Karolinska Institutet; Stokholm Sweden
- Department of Neonatology; Karolinska University Hospital; Stockholm Sweden
| | - Michael Wells
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - Cindy-Lee Dennis
- Lawrence S. Bloomberg Faculty of Nursing; University of Toronto; Toronto Canada
| | - Emilija Wilson
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
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Boudra R, Woappi Y, Wang D, Xu S, Wells M, Schmults CD, Lian CG, Ramsey MR. Regulation of 5-hydroxymethylcytosine by TET2 contributes to Squamous Cell Carcinoma tumorigenesis. J Invest Dermatol 2021; 142:1270-1279.e2. [PMID: 34695415 PMCID: PMC9033889 DOI: 10.1016/j.jid.2021.09.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 12/17/2022]
Abstract
DNA methylation is a key regulatory event controlling a variety of physiological processes and can have dramatic effects on gene transcription. Methylated Cytosine (5mC) can be oxidized by the TET family of enzymes to 5-hydroxymethylcytosine (5-hmC), a key intermediate in the de-methylation cycle, and 5-hmC levels are reduced in malignancies such as AML and melanoma. We constructed a tissue microarray of human cutaneous Squamous Cell Carcinoma (SCC) tumors and found a global reduction in 5-hmC levels compared to adjacent skin. Using a murine K14-CreER system, we have found that loss of Tet2 promotes carcinogen-induced SCC and cooperates with loss of Tp53 to drive spontaneous SCC tumors in epithelial tissues. Analysis of changes in 5-hmC and gene expression following loss of Tet2 in the epidermis revealed focal alterations in 5-hmC levels and an increase in Hair Follicle Transient Amplifying Cell (HF-TAC) genes along with a reduction in epidermal differentiation genes. These results demonstrate a role for Tet2 in epidermal lineage specification, consistent with reported roles for Tet enzymes in controlling lineage commitment in hematopoietic stem cells and ES cells and establish Tet2 as a bone fide tumor suppressor in SCC.
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Affiliation(s)
- Rafik Boudra
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Yvon Woappi
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Diana Wang
- Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Shuyun Xu
- Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael Wells
- Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Chrysalyne D Schmults
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Christine G Lian
- Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Matthew R Ramsey
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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Wells M, Romeo N, Gatherwright J. Case series of two successful pelvic ring reconstructions using a pedicled anterolateral thigh flap. JPRAS Open 2021; 30:84-90. [PMID: 34522754 PMCID: PMC8426169 DOI: 10.1016/j.jpra.2021.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/26/2021] [Indexed: 11/19/2022] Open
Abstract
Open pelvic ring fractures can have devastating functional consequences including prolonged disability, chronic pain, infection, and even death. These injuries are uncommon but often involve soft tissue defects. Without early and appropriate coverage, patients are likely to sustain infection, which can be fatal. Here, we present the successful use of a pedicled ALT flap in two patients with soft tissue defects due to open pelvic ring injury. The pedicled ALT flap can be harvested as a composite flap comprising a portion of the skin, fascia, and muscle depending on the defect. Although the ALT flap has often been employed for abdominal wall and abdomino-perineal reconstruction, this is the first case series to report the use of the ALT flap in a subacute traumatic setting for pelvic ring reconstruction.
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Affiliation(s)
- Michael Wells
- Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Nicholas Romeo
- Division of Orthopedic Surgery, MetroHealth, Cleveland, OH, United States
| | - James Gatherwright
- Division of Plastic Surgery, MetroHealth, Cleveland, OH, United States
- Corresponding author.
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Mosella MS, Sabedot TS, Silva TC, Malta TM, Dezem FS, Asmaro KP, Wells M, Mukherjee A, Poisson LM, Snyder J, deCarvalho AC, Walbert T, Aho T, Kalkanis S, Elias PC, Antonini SR, Rock J, Noushmehr H, Castro M, Castro AV. DNA methylation-based signatures classify sporadic pituitary tumors according to clinicopathological features. Neuro Oncol 2021; 23:1292-1303. [PMID: 33631002 DOI: 10.1093/neuonc/noab044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Distinct genome-wide methylation patterns cluster pituitary neuroendocrine tumors (PitNETs) into molecular groups associated with specific clinicopathological features. Here we aim to identify, characterize, and validate methylation signatures that objectively classify PitNET into clinicopathological groups. METHODS Combining in-house and publicly available data, we conducted an analysis of the methylome profile of a comprehensive cohort of 177 tumors (Panpit cohort) and 20 nontumor specimens from the pituitary gland. We also retrieved methylome data from an independent PitNET cohort (N = 86) to validate our findings. RESULTS We identified three methylation clusters associated with adenohypophyseal cell lineages and functional status using an unsupervised approach. Differentially methylated probes (DMP) significantly distinguished the Panpit clusters and accurately assigned the samples of the validation cohort to their corresponding lineage and functional subtypes memberships. The DMPs were annotated in regulatory regions enriched with enhancer elements, associated with pathways and genes involved in pituitary cell identity, function, tumorigenesis, and invasiveness. Some DMPs correlated with genes with prognostic and therapeutic values in other intra- or extracranial tumors. CONCLUSIONS We identified and validated methylation signatures, mainly annotated in enhancer regions that distinguished PitNETs by distinct adenohypophyseal cell lineages and functional status. These signatures provide the groundwork to develop an unbiased approach to classifying PitNETs according to the most recent classification recommended by the 2017 WHO and to explore their biological and clinical relevance in these tumors.
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Affiliation(s)
- Maritza S Mosella
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA.,Department of Genetics, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Thais S Sabedot
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Tiago C Silva
- Department of Genetics, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Tathiane M Malta
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Felipe Segato Dezem
- Department of Genetics, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Karam P Asmaro
- Department of Neurosurgery, Henry Ford Health System, Detroit, Michigan, USA
| | - Michael Wells
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Abir Mukherjee
- Department of Pathology, Henry Ford Health System, Detroit, Michigan, USA
| | - Laila M Poisson
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA.,Center for Bioinformatics, Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan, USA
| | - James Snyder
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Ana C deCarvalho
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Tobias Walbert
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Todd Aho
- Department of Radiology, Henry Ford Health System, Detroit, Michigan, USA
| | - Steven Kalkanis
- Department of Neurosurgery, Henry Ford Health System, Detroit, Michigan, USA
| | - Paula C Elias
- Internal Medicine Department, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Sonir R Antonini
- Department of Pediatrics, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Jack Rock
- Department of Neurosurgery, Henry Ford Health System, Detroit, Michigan, USA
| | - Houtan Noushmehr
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA.,Department of Genetics, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Margaret Castro
- Internal Medicine Department, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Ana Valeria Castro
- Hermelin Brain Tumor Center, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
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Nepal P, Wells M, Ojili V, Khandelwal K, Lalwani N, Khandelwal A. Problem-solving with MRI in acute abdominopelvic conditions, part 1: gastrointestinal, hepatobiliary, and pancreatic diseases. Emerg Radiol 2021; 28:1161-1172. [PMID: 34247289 DOI: 10.1007/s10140-021-01960-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/25/2021] [Indexed: 01/11/2023]
Abstract
The purpose of this article is to review the benefit and added value and advantages of magnetic resonance imaging (MRI) compared with other cross-sectional imaging in patients presenting with abdominopelvic emergencies. During the past decade, there has been increased utilization of MRI in the emergency department with widespread availability of MR scanners, improvement in rapid imaging techniques, and methods to overcome motion-related artifacts. This has benefited patients at higher risk of radiation, particularly children and pregnant women, and patients with contraindications to iodinated contrast including allergy and renal dysfunction. Still the challenges are: on site MR scanner in the emergency department, after-hour services, as well as availability of time slot to rapidly scan emergency patient. MRI has additional advantages over other imaging modalities due to its high contrast resolution, which allows it to better characterize tissue and fluid collections, and may avoid the need for intravenous contrast. Radiologists must be familiar with the role and added value of MRI, spectrum of imaging findings, and problem-oriented modified MR protocols in abdominal and pelvic emergencies. In part 1, we will discuss the utility of MRI in gastrointestinal, hepatobiliary, and pancreatic diseases. In part 2, the authors will focus on the key MR imaging features of female pelvic gynecological diseases, pregnancy related complications, abdominal vascular complications, and renal diseases.
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Affiliation(s)
- Pankaj Nepal
- Department of Radiology, St. Vincent's Medical Center, Bridgeport, CT, USA
| | - Michael Wells
- Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Vijayanadh Ojili
- Department of Radiology, University of Texas Health, San Antonio, TX, USA
| | - Kanika Khandelwal
- Department of Hospital Internal Medicine, Mayo Clinic, Austin, MN, USA
| | - Neeraj Lalwani
- Department of Radiology, Virginia Commonwealth University, Richmond, VA, USA
| | - Ashish Khandelwal
- Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
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Herrgott G, She R, Sabedot T, Wells M, Asmaro K, Malta T, Mosella M, Nelson K, deCarvalho A, Poisson L, Mukherjee A, Cazacu S, Robin A, Lee I, Snyder J, Walbert T, Rosenblum M, Mikkelsen T, Kalkanis S, Rock J, Noushmehr H, Castro AV. OTME-5. Meningioma liquid biopsy specimens exhibit contrasting immune-cell landscapes across methylation-subtypes and estimated recurrence risk subgroups. Neurooncol Adv 2021. [PMCID: PMC8264924 DOI: 10.1093/noajnl/vdab070.056] [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: 11/14/2022] Open
Abstract
Abstract
Background
Tumor-infiltrating immune cell compositions have been previously correlated to encouragement or inhibition of tumor growth. This association highlights immune-landscape profiling through non-invasive methods as a crucial step in approaches to treatment of patients with meningioma (MNG), a prevalent primary intracranial tumor. Genome-wide DNA methylation patterns can aid in definition and assessment of cell compositions in liquid biopsy serum specimens, and allow for development of machine-learning models with predictive capabilities.
Methods
We profiled the cfDNA methylome (EPIC array) in liquid biopsy specimens from patients with MNG (n = 63) and nontumor controls (n = 6). We conducted both unsupervised epigenome-wide and supervised analyses of the meningioma methylome. Estimation of immune cell composition was conducted using Python-based methodology, where a reference methylome atlas of chosen cell types (B-cells, CD4- and CD8T-cells, neutrophils, natural killer cells, monocytes, cortical neuron, vascular endothelial cells, and healthy meninge) was used to deconvolute the MNG samples. Recurrence risk was estimated using an existing methylation-based Random-Forest classifier previously reported and validated, adapted to our serum-based cohort through employment of translatable meningioma subgroup-specific methylation markers (differentially methylated probes).
Results
We identified four distinct genome-wide methylation subgroups (k-clusters) of MNG which presented differential tumor micro-environments across all cell types investigated. Application of the DNA methylation-based Random-Forest classifier allowed for categorization of primary MNG serum samples into estimated recurrence-risk subgroups. Significantly contrasting micro-environments for the subgroups were observed across several cell-types, with those MNG more likely to recur displaying depletion in cell types reported to improve anti-tumoral response in many tumors (e.g. T-Cells).
Conclusions
DNA methylation based deconvolution allowed for detection of contrasting tumor microenvironment compositions across MNG methylation subtypes and recurrence-risk estimation subgroups. These results suggest that microenvironment profiling can be informative of probable tumor behavior and prognostic outcomes, helping guide therapeutic approaches towards treatment of patients with MNG.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Adam Robin
- Henry Ford Health System, Detroit, MI, USA
| | - Ian Lee
- Henry Ford Health System, Detroit, MI, USA
| | | | | | | | | | | | - Jack Rock
- Henry Ford Health System, Detroit, MI, USA
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Chakraborty A, Perez M, Mohammed NBB, Wells M, Wilmott JS, Thompson JF, Haslam SM, Wang W, Scolyer RA, Murphy GF, Dimitroff CJ. Abstract 2609: Hypoxia-mediated downregulation of GCNT2/I-antigen in metastatic melanoma accelerates disease progression and mortality. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-2609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Metastatic melanoma is a lethal disease with a dismal 5-year survival rate. Thus, intense efforts to boost novel therapeutic strategies are underway to identify early detection of melanomas with a high propensity to metastasize. We recently discovered that the loss of cell surface glycan, I-antigen, corresponds with the transition of primary melanoma to metastatic melanoma. I-antigen or I-branched glycans are synthesized by β16, N-acetylglucosaminyltransferase 2 (GCNT2) and inversely correlate with the growth and signaling potential of metastatic melanoma cells. Moreover, compared with high GCNT2 expression in normal melanocytes, nevi, and early-stage primary melanomas, GCNT2 is conspicuously lost in metastatic melanomas. We anticipate the potential utilization of GCNT2 expression as a biomarker to predict melanoma metastasis. Further, metastasis and aggressive disease progression are key phenotypes of tumor-initiating cells (TIC), which are preferentially generated in areas of hypoxia. In the vertical growth phase of primary melanomas and melanoma metastases, the tumor microenvironment is typically hypoxic (1.5% oxygen). We hypothesize that the hypoxic microenvironment aids in metastatic melanoma progression through TIC generation and immune evasion, by downregulating GCNT2 and switching I-branched glycans to linear glycans. In this study, metastatic melanoma cells grown under hypoxic conditions had reduced GCNT2 and MITF with upregulated stem cell marker KLF4 expression. Importantly, in the in vivo TIC assay, we found significantly decreased tumor formation with increased GCNT2 expression while low GCNT2 levels enabled tumor formation even when 103 cells were injected in immunocompromised mice. Since TICs are thought to evade immune clearance, we investigated whether loss of GCNT2 increased TIC characteristics and also enabled immunosuppressive features. In human PBMC - metastatic melanoma co-cultures, there was an increase in T regulatory cell generation associated with low GCNT2 compared to high GCNT2 expression in melanoma cells, suggesting that loss of GCNT2 associates with increased TIC generation, tumor formation, and immunoevasion potential. Using melanoma patient specimens, immunohistochemical analysis of GCNT2 corresponded with a significant increase in mortality with the loss of GCNT2 staining. Altogether, these findings highlight GCNT2/I-branching not only as a biomarker of melanoma virulence but reveal malignancy-associated pathways functioning in parallel with loss of GCNT2/I-branching that could offer additional targets for the treatment of metastatic melanoma.
Citation Format: Asmi Chakraborty, Mariana Perez, Norhan B. B Mohammed, Michael Wells, James S. Wilmott, John F. Thompson, Stuart M. Haslam, Wei Wang, Richard A. Scolyer, George F. Murphy, Charles J. Dimitroff. Hypoxia-mediated downregulation of GCNT2/I-antigen in metastatic melanoma accelerates disease progression and mortality [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 2609.
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Affiliation(s)
| | | | | | | | | | | | | | - Wei Wang
- 5Brigham and Women's Hospital, Boston, MA
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Almutairi AS, Abunurah H, Hadi Alanazi A, Alenazi F, Nagy H, Saad Almutairi N, Wells M, Alawam A, Alqahtani MM. The immunological response among COVID-19 patients with acute respiratory distress syndrome. J Infect Public Health 2021; 14:954-959. [PMID: 34130119 PMCID: PMC8153960 DOI: 10.1016/j.jiph.2021.05.007] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/25/2021] [Accepted: 05/05/2021] [Indexed: 01/19/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) often results in pneumonia and can lead to acute respiratory distress syndrome (ARDS). ARDS is one of the most significant causes of death in patients with COVID-19. The development of a “cytokine storm” in patients with COVID-19 causes progression to ARDS. In this scoping review, we investigated the effect of pro-inflammatory cytokines in inducing moderate and severe ARDS outcomes. A comprehensive search was performed using PubMed and Google Scholar to implement a broad query that captured all the relevant studies published between December 2019 and September 2020.We identified seven studies that evaluated the immune response in COVID-19 patients with ARDS. The white blood cell counts (WBCs), CRP, and IL-6 were higher in the moderately presenting ARDS patients, critically ill patients, and those with more severe ARDS. This study may contribute to better patient management and outcomes if tailored immune marker interventions are implemented in the near future.
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Affiliation(s)
- Abdulaziz S Almutairi
- Faculty Member at King Saud Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia; School of Biomedical Science, University of Alabama at Birmingham, Birmingham, AL, United States; King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia.
| | - Hassan Abunurah
- Faculty Member at King Saud Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia; Department of Rehabilitation Science, School of Health Profession, University of Alabama at Birmingham, Birmingham, AL, United States; King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia.
| | | | - Faraj Alenazi
- Faculty Member at King Saud Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia; University of Birmingham, Birmingham, United Kingdom; King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia
| | - Hassan Nagy
- Fairfax County Health Department, Fairfax, VA, United States
| | | | - Michael Wells
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham (UAB), United States
| | | | - Mohammed M Alqahtani
- Faculty Member at King Saud Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia; Department of Rehabilitation Science, School of Health Profession, University of Alabama at Birmingham, Birmingham, AL, United States; King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia.
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Wells M, Basu P, Stolz JF. The physiology and evolution of microbial selenium metabolism. Metallomics 2021; 13:6261189. [PMID: 33930157 DOI: 10.1093/mtomcs/mfab024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/27/2022]
Abstract
Selenium is an essential trace element whose compounds are widely metabolized by organisms from all three domains of life. Moreover, phylogenetic evidence indicates that selenium species, along with iron, molybdenum, tungsten, and nickel, were metabolized by the last universal common ancestor of all cellular lineages, primarily for the synthesis of the 21st amino acid selenocysteine. Thus, selenium metabolism is both environmentally ubiquitous and a physiological adaptation of primordial life. Selenium metabolic reactions comprise reductive transformations both for assimilation into macromolecules and dissimilatory reduction of selenium oxyanions and elemental selenium during anaerobic respiration. This review offers a comprehensive overview of the physiology and evolution of both assimilatory and dissimilatory selenium metabolism in bacteria and archaea, highlighting mechanisms of selenium respiration. This includes a thorough discussion of our current knowledge of the physiology of selenocysteine synthesis and incorporation into proteins in bacteria obtained from structural biology. Additionally, this is the first comprehensive discussion in a review of the incorporation of selenium into the tRNA nucleoside 5-methylaminomethyl-2-selenouridine and as an inorganic cofactor in certain molybdenum hydroxylase enzymes. Throughout, conserved mechanisms and derived features of selenium metabolism in both domains are emphasized and discussed within the context of the global selenium biogeochemical cycle.
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Affiliation(s)
- Michael Wells
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - Partha Basu
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - John F Stolz
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
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Hoe LS, Wildi K, Skeggs K, Bouquet M, Sato K, Jung J, Ainola C, Hyslop K, Heinsar S, Abbate G, Colombo S, Passmore M, Wood E, Wells M, Bartnikowski N, O'Neill H, Reid J, Shuker T, Haymet A, Livingstone S, Sato N, Obonyo N, James L, He T, McDonald C, Mullins D, Engkilde-Pedersen S, Diab S, Millar J, Malfertheiner M, Marshall L, Nair L, Rozencwajg S, Wang X, Shek Y, Platts D, Chan J, Boon C, Black D, Helms L, Bradbury L, Haqqani H, Molenaar P, Bassi GL, Suen J, McGiffin D, Fraser J. Donor Heart Preservation by Hypothermic Ex Vivo Perfusion - Improved Recipient Survival and Successful Prolongation of Ischemic Time. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1864] [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] Open
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Chiu M, Trigg B, Taracena M, Wells M. Diverse cellular morphologies during lumen maturation in Anopheles gambiae larval salivary glands. Insect Mol Biol 2021; 30:210-230. [PMID: 33305876 PMCID: PMC8142555 DOI: 10.1111/imb.12689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/29/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
Mosquitoes are the greatest animal threat to human health, causing hundreds of millions of infections and around 1 million deaths each year. All mosquito-borne pathogens must traverse the salivary glands (SGs) to be transmitted to the next host, making this organ an ideal target for interventions. The adult SG develops from precursor cells located in the larval SG duct bud. Characterization of the larval SG has been limited. We sought to better understand larval SG architecture, secretion and gene expression. We developed an optimized method for larval SG staining and surveyed hundreds of larval stage 4 (L4) SGs using fluorescence confocal microscopy. Remarkable variation in SG cell and chromatin organization differed among individuals and across the L4 stage. Lumen formation occurred during L4 stage through secretion likely involving a coincident cellular apical lipid enrichment and extracellular vesicle-like structures. Meta-analysis of microarray data showed that larval SG gene expression is divergent from adult SGs, more similar to larval gastric cecae, but different from other larval gut compartments. This work highlights the variable cell architecture of larval Anopheles gambiae SGs and provides candidate targets for genetic strategies aiming to disrupt SGs and transmission of mosquito-borne pathogens.
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Affiliation(s)
- M Chiu
- Department of Cell Biology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- The Johns Hopkins Malaria Research Institute, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - B Trigg
- Department of Cell Biology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- The Johns Hopkins Malaria Research Institute, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - M Taracena
- Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - M Wells
- Department of Cell Biology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- The Johns Hopkins Malaria Research Institute, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Department of Biomedical Sciences, Idaho College of Osteopathic Medicine (ICOM), Meridian, Idaho, USA
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Affiliation(s)
- K B Cunningham
- Dr, Division of Population and Behavioural Sciences, School of Medicine, University of St Andrews, North Haugh, St Andrews, Scotland, KY16 9TF, UK
| | - T Kroll
- Professor, UCD Centre for Interdisciplinary Research, Education and Innovation in Health Systems (UCD IRIS), UCD School of Nursing, Midwifery and Health Systems, UCD Health Sciences Centre, University College Dublin (UCD), Dublin, Ireland
| | - M Wells
- Professor, Nursing Directorate, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK
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Castro-Sánchez E, Russell AM, Dolman L, Wells M. What place does nurse-led research have in the COVID-19 pandemic? Int Nurs Rev 2021; 68:214-218. [PMID: 33565619 PMCID: PMC8013712 DOI: 10.1111/inr.12660] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/09/2020] [Accepted: 12/21/2020] [Indexed: 12/19/2022]
Abstract
AIM Reflect upon the visibility of nursing-led research during the COVID-19 pandemic. BACKGROUND The emerging SARS-CoV-2 infection has galvanized collaborative and multidisciplinary efforts in clinical and research practice worldwide. The scarce evidence-base to manage patients with COVID-19 has included limited nurse-led research. INTRODUCTION Clinical research nurses have greatly contributed to the delivery of COVID-19 research, yet the number of COVID-19 nursing-led research papers appears to be limited, with even fewer nurse-led research projects funded. METHODS Authors' views and PubMed search on 'COVID-19 and nursing'. FINDINGS There is a dearth of nursing-led research. Most papers describe the nursing contribution to COVID-19 care, changes in nursing working arrangements and emotional burden. There are opportunities to explore the consequences to vulnerable population groups of public health measures implemented to stop the progress of the COVID-19 pandemic. DISCUSSION Workforce gaps, limited integration in research structures and clinical redeployment may have hampered nurse-led research. COVID-19 may exacerbate staffing deficits by disrupting the education pipeline, obstructing the transition from clinical to academic practice, particularly in areas where clinical academic roles are yet to emerge. CONCLUSION The absence of nurse-led research in COVID-19 can be explained by chronic, underlying factors and the features of the pandemic response. Emerging models of care, effective staffing and inequalities related to COVID-19 appear obvious research areas. Nursing leadership needs to strengthen its political voice and lobbying skills to secure nurse-led research funding. IMPLICATIONS FOR NURSING POLICY Embracing international nursing research, strengthening collaborations and lobbying policymakers for investment in nurse-sensitive research would enhance the response to COVID-19.
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Affiliation(s)
- E Castro-Sánchez
- School of Health Sciences, City, University of London, London, UK.,NIHR Senior Nurse Research Leader, Imperial College Healthcare NHS Trust, London, UK
| | - A M Russell
- Senior Lecturer, College of Medicine and Health, University of Exeter South Cloisters, St Luke's Campus, Exeter, UK
| | - L Dolman
- NIHR Senior Nurse Research Leader, Imperial College Healthcare NHS Trust, London, UK
| | - M Wells
- NIHR Senior Nurse Research Leader, Imperial College Healthcare NHS Trust, London, UK.,Surgery and Cancer, Imperial College London, London, UK
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Sabedot T, Malta T, Snyder J, Nelson K, Wells M, deCarvalho A, Mukherjee A, Chitale D, Mosella M, Sokolov A, Asmaro K, Robin A, Rosenblum M, Mikkelsen T, Rock J, Poisson L, Lee I, Walbert T, Kalkanis S, Iavarone A, Castro AV, Noushmehr H. A serum-based DNA methylation assay provides accurate detection of glioma. Neuro Oncol 2021; 23:1494-1508. [PMID: 33560371 DOI: 10.1093/neuonc/noab023] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [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: 02/07/2023] Open
Abstract
BACKGROUND The detection of somatic mutations in cell-free DNA (cfDNA) from liquid biopsy has emerged as a non-invasive tool to monitor the follow-up of cancer patients. However, the significance of cfDNA clinical utility remains uncertain in patients with brain tumors, primarily because of the limited sensitivity cfDNA has to detect real tumor-specific somatic mutations. This unresolved challenge has prevented accurate follow-up of glioma patients with non-invasive approaches. METHODS Genome-wide DNA methylation profiling of tumor tissue and serum cell-free DNA of glioma patients. RESULTS Here, we developed a non-invasive approach to profile the DNA methylation status in the serum of patients with gliomas and identified a cfDNA-derived methylation signature that is associated with the presence of gliomas and related immune features. By testing the signature in an independent discovery and validation cohorts, we developed and verified a score metric (the "glioma epigenetic liquid biopsy score" or GeLB) that optimally distinguished patients with or without glioma (sensitivity: 100%, specificity: 97.78%). Furthermore, we found that changes in GeLB score reflected clinicopathological changes during surveillance (e.g., progression, pseudoprogression or response to standard or experimental treatment). CONCLUSIONS Our results suggest that the GeLB score can be used as a complementary approach to diagnose and follow up patients with glioma.
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Affiliation(s)
- Thais Sabedot
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
| | - Tathiane Malta
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
| | - James Snyder
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA.,Department of Neuro Oncology, Henry Ford Health System, Detroit, MI, USA
| | - Kevin Nelson
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Michael Wells
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
| | - Ana deCarvalho
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Abir Mukherjee
- Department of Pathology, Henry Ford Health System, Detroit, MI, USA
| | - Dhan Chitale
- Department of Pathology, Henry Ford Health System, Detroit, MI, USA
| | - Maritza Mosella
- Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
| | - Artem Sokolov
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Karam Asmaro
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
| | - Adam Robin
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Michael Rosenblum
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Tom Mikkelsen
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Jack Rock
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Laila Poisson
- Department of Biostatistics, Henry Ford Health System, Detroit, MI, USA
| | - Ian Lee
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Tobias Walbert
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Department of Neuro Oncology, Henry Ford Health System, Detroit, MI, USA
| | - Steven Kalkanis
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA
| | - Antonio Iavarone
- Institute for Cancer Genetics, Department of Pathology and Cell Biology, Department of Neurology, Columbia University Medical Center, New York, USA
| | - Ana Valeria Castro
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
| | - Houtan Noushmehr
- Department of Neurosurgery, Hermelin Brain Tumor Center, Henry Ford Health System, Detroit, MI, USA.,Omics Laboratory, Henry Ford Health System, Detroit, MI, USA
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48
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Johansson M, Wirén AA, Ssempasa D, Wells M. A qualitative study of midwives' challenges to support transmen during childbirth: A short report. Eur J Midwifery 2021; 4:3. [PMID: 33537605 PMCID: PMC7839083 DOI: 10.18332/ejm/116410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/19/2019] [Accepted: 01/09/2020] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Individuals who are transgender often want a family and want to be validated as fathers, but may lack support in the reproductive health field. The aim of this qualitative study was to explore midwives’ perceptions regarding caring for transmen during labour and birth. METHODS Five midwives were recruited from Stockholm-area hospitals, with interviews lasting 17 minutes on average. Qualitative content analysis using an inductive approach was used. RESULTS Our findings describe the challenges midwives face when caring for transmen in childbirth, including a lack of knowledge, confusion on working with transgender, how to provide individualized support, and the complexity of childbirth. CONCLUSIONS The midwives faced challenges when caring for transmen in childbirth. Since midwives lacked knowledge regarding best practices to support transmen, they wanted to receive more education on how to care for transmen during birth.
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Affiliation(s)
| | - Andrea A Wirén
- Karolinska Institutet Medical University, Stockholm, Sweden
| | | | - Michael Wells
- Karolinska Institutet Medical University, Stockholm, Sweden
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49
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Cummings C, Gamble T, Wells M. A Comparison of the Foraging Biology of Two Tropical Gecko Species in Disturbed Areas. South American Journal of Herpetology 2021. [DOI: 10.2994/sajh-d-18-00026.1] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Charles Cummings
- Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA, USA
| | - Tony Gamble
- Department of Biological Sciences, Marquette University, Milwaukee, WI, USA
| | - Michael Wells
- Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN, USA
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50
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Wells M, Jella TK, Zheng DX, Chang IA, Gerber AL, Jella T, Gatherwright JR. Impact of COVID-19 geographic distribution on advanced age plastic surgeons: A cross-sectional analysis. J Plast Reconstr Aesthet Surg 2020; 74:1633-1701. [PMID: 33386266 PMCID: PMC7833334 DOI: 10.1016/j.bjps.2020.12.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/07/2020] [Accepted: 12/17/2020] [Indexed: 12/02/2022]
Affiliation(s)
- Michael Wells
- Department of Plastic Surgery, Case Western Reserve University School of Medicine, Cleveland, OH USA.
| | - Tarun K Jella
- Department of Plastic Surgery, Case Western Reserve University School of Medicine, Cleveland, OH USA
| | - David X Zheng
- Department of Plastic Surgery, Case Western Reserve University School of Medicine, Cleveland, OH USA
| | - Irene A Chang
- Department of Plastic Surgery, Case Western Reserve University School of Medicine, Cleveland, OH USA
| | - Alexandria L Gerber
- Department of Plastic Surgery, Case Western Reserve University School of Medicine, Cleveland, OH USA
| | - Taral Jella
- College of Arts and Sciences, Emory University, Atlanta, GA USA
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