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Baria M, George R, Barker T, Flanigan D, Kaeding C, Magnussen R. The relationship of body mass index on patient reported outcomes after platelet-rich plasma versus microfragmented adipose tissue for knee osteoarthritis: A secondary analysis of a randomized controlled trial. Am J Phys Med Rehabil 2024:00002060-990000000-00458. [PMID: 38630921 DOI: 10.1097/phm.0000000000002499] [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] [Indexed: 04/19/2024]
Abstract
OBJECTIVE Body mass index (BMI) is known to contribute to outcomes for patients with knee OA. Furthermore, BMI influences the protein expression of orthobiologic treatments like platelet-rich plasma (PRP) and microfragmented adipose tissue (MFAT). We performed a secondary analysis of the association of BMI with PROs for patients with knee OA who received either PRP or MFAT injections. METHODS Seventy-one patients with knee OA were randomized to receive a single ultrasound-guided injection of PRP or MFAT. PRP was created from 180cc of anti-coagulated blood and processed using a double-spin, buffy-coat concentration system. MFAT was created using autologous lipoaspirate that was processed according to minimal manipulation guidelines. PROs, and osteoarthritis outcome scores (KOOS) were tracked for 12-months. RESULTS Forty-nine patients (PRP=23, MFAT=26) completed 12-month follow-up. KOOS- Quality of life and activity of daily living subscores were inversely correlated (both p < 0.05) with BMI in the MFAT but not PRPgroup. KOOS-Pain and Sport subscores showed a trend towards inverse correlation with BMI in the MFAT group (p = 0.07 and p = 0.06, respectively), but not PRP.Conclusion: BMI was negatively associated with PROs in patients who received MFAT injections for knee OA, but not for patients receiving PRP.
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Baria M, Barker T, Durgam S, Pedroza A, Flanigan D, Jia L, Kaeding C, Magnussen R. Microfragmented Adipose Tissue Is Equivalent to Platelet-Rich Plasma for Knee Osteoarthritis at 12 Months Posttreatment: A Randomized Controlled Trial. Orthop J Sports Med 2024; 12:23259671241233916. [PMID: 38510323 PMCID: PMC10953019 DOI: 10.1177/23259671241233916] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 07/31/2023] [Indexed: 03/22/2024] Open
Abstract
Background Platelet-rich plasma (PRP) is an effective treatment for knee osteoarthritis (OA). Microfragmented adipose tissue (MFAT) is another orthobiologic that holds promise, but data supporting its use are limited. Previous studies showed that MFAT created using the Lipogems device was equivalent to PRP created via noncommercial laboratory-based processes. Purpose To perform a comparison of commercially available MFAT and PRP systems for treatment of knee OA. Study Design Randomized controlled trial; Level of evidence, 2. Methods A total of 71 patients with symptomatic knee OA (Kellgren-Lawrence grades 1-4) were randomized to receive a single injection of either leukocyte-rich PRP (Angel; Arthrex) or MFAT (Lipogems) under ultrasound guidance. Patient-reported outcomes (Knee injury and Osteoarthritis Outcome Score [KOOS], visual analog scale for pain with activities of daily living [VAS pain], and Tegner activity level) were recorded at baseline and at 1, 3, 6, and 12 months after injection. The primary outcome was the KOOS-Pain subscale score at 12 months after injection. Results Overall, 49 patients completed their 12-month follow-up (PRP group, n = 23; MFAT group, n = 26). All demographic features were similar between groups, except that more men were randomized to the PRP group and more women to the MFAT group. At 12 months posttreatment, KOOS-Pain scores improved in both groups, with no significant group difference (PRP, 78 ± 17.9 vs MFAT, 77.8 ± 19.3; P = .69). Similarly, other KOOS subscales, VAS pain scores, and Tegner scores improved at 12 months, with no differences between treatment groups. Conclusion Both PRP and MFAT injections for knee OA resulted in improved patient-reported outcomes at 12 months posttreatment, with no differences found between treatments. Registration NCT04351087 (ClinicalTrials.gov identifier).
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Affiliation(s)
- Michael Baria
- Department of Physical Medicine and Rehabilitation, The Ohio State University, Columbus, Ohio, USA
| | - Tyler Barker
- Sports Medicine Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Sushmitha Durgam
- College of Veterinary Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Angela Pedroza
- Sports Medicine Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - David Flanigan
- Department of Orthopedic Surgery, The Ohio State University, Columbus, Ohio, USA
| | - Liuqing Jia
- Sports Medicine Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Christopher Kaeding
- Department of Orthopedic Surgery, The Ohio State University, Columbus, Ohio, USA
| | - Robert Magnussen
- Department of Orthopedic Surgery, The Ohio State University, Columbus, Ohio, USA
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Barker T. Regarding "A Diagnosis of Vitamin D Deficiency Is Associated With Increased Rates of Anterior Cruciate Ligament Tears and Reconstruction Failure". Arthroscopy 2024; 40:11-12. [PMID: 38123259 DOI: 10.1016/j.arthro.2023.07.033] [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: 05/29/2023] [Accepted: 07/27/2023] [Indexed: 12/23/2023]
Affiliation(s)
- Tyler Barker
- Sports Medicine Research Institute, The Ohio State University, Columbus, Ohio; Department of Orthopaedics, University of Utah, Salt Lake City, Utah; Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah
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Barker T. Vitamins and Human Health: Systematic Reviews and Original Research. Nutrients 2023; 15:2888. [PMID: 37447213 DOI: 10.3390/nu15132888] [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] [Received: 05/29/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
Vitamins are a group of organic compounds essential to physiological functions in the body [...].
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Affiliation(s)
- Tyler Barker
- Sports Medicine Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA
- Department of Orthopaedics, University of Utah, Salt Lake City, UT 84108, USA
- Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA
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5
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Styrkarsdottir U, Stefansdottir L, Thorleifsson G, Stefansson OA, Saevarsdottir S, Lund SH, Rafnar T, Hoshijima K, Novak K, Oreiro N, Rego-Perez I, Hansen C, Kazmers N, Kiemeney LA, Blanco FJ, Barker T, Kloppenburg M, Jurynec MJ, Gudbjartsson DF, Jonsson H, Thorsteinsdottir U, Stefansson K. Meta-analysis of erosive hand osteoarthritis identifies four common variants that associate with relatively large effect. Ann Rheum Dis 2023; 82:873-880. [PMID: 36931692 DOI: 10.1136/ard-2022-223468] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 02/25/2023] [Indexed: 03/19/2023]
Abstract
OBJECTIVES Erosive hand osteoarthritis (EHOA) is a severe subset of hand osteoarthritis (OA). It is unclear if EHOA is genetically different from other forms of OA. Sequence variants at ten loci have been associated with hand OA but none with EHOA. METHODS We performed meta-analysis of EHOA in 1484 cases and 550 680 controls, from 5 populations. To identify causal genes, we performed eQTL and plasma pQTL analyses, and developed one zebrafish mutant. We analysed associations of variants with other traits and estimated shared genetics between EHOA and other traits. RESULTS Four common sequence variants associated with EHOA, all with relatively high effect. Rs17013495 (SPP1/MEPE, OR=1.40, p=8.4×10-14) and rs11243284 (6p24.3, OR=1.35, p=4.2×10-11) have not been associated with OA, whereas rs11631127 (ALDH1A2, OR=1.46, p=7.1×10-18), and rs1800801 (MGP, OR=1.37, p=3.6×10-13) have previously been associated with hand OA. The association of rs1800801 (MGP) was consistent with a recessive mode of inheritance in contrast to its additive association with hand OA (OR homozygotes vs non-carriers=2.01, 95% CI 1.71 to 2.37). All four variants associated nominally with finger OA, although with substantially lower effect. We found shared genetic components between EHOA and other OA measures, grip strength, urate levels and gout, but not rheumatoid arthritis. We identified ALDH1A2, MGP and BMP6 as causal genes for EHOA, with loss-of-function Bmp6 zebrafish mutants displaying EHOA-like phenotypes. CONCLUSIONS We report on significant genetic associations with EHOA. The results support the view of EHOA as a form of severe hand OA and partly separate it from OA in larger joints.
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Affiliation(s)
| | | | | | | | - Saedis Saevarsdottir
- Population Genomics, deCODE genetics / Amgen Inc, Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Sigrun H Lund
- Statistics, deCODE genetics / Amgen Inc, Reykjavik, Iceland
| | - Thorunn Rafnar
- Population Genomics, deCODE genetics / Amgen Inc, Reykjavik, Iceland
| | - Kazuyuki Hoshijima
- Department of Human Genetics, University of Utah, Salt Lake City, Utah, USA
| | - Kendra Novak
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Natividad Oreiro
- Rheumatology Division, A Coruna University Hospital, A Coruna, Spain
| | | | - Channing Hansen
- Enterprise Analytics, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Nikolas Kazmers
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Lambertus A Kiemeney
- Radboud University Medical Center, Radboud Institute for Health Science, Radboud University, Nijmegen, The Netherlands
| | - Francisco J Blanco
- Rheumatology Division, A Coruna University Hospital, A Coruna, Spain.,Department of Phisiotherapy, Medicine and Biomedical Sciences, A Coruna University Hospital, A Coruna, Spain
| | - Tyler Barker
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA.,Precision Genomics, Intermountain Healthcare, Salt Lake City, Utah, USA.,Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, USA
| | - Margreet Kloppenburg
- Department of Rheumatology, Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Michael J Jurynec
- Department of Human Genetics, University of Utah, Salt Lake City, Utah, USA
| | - Daniel F Gudbjartsson
- Statistics, deCODE genetics / Amgen Inc, Reykjavik, Iceland.,School of Engineering and Natural Sciences, University of Iceland, Reykjavik, Iceland
| | - Helgi Jonsson
- Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland.,Department of Medicine, Landspitali University Hospital, Reykjavik, Iceland
| | - Unnur Thorsteinsdottir
- Population Genomics, deCODE genetics / Amgen Inc, Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Kari Stefansson
- Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland .,deCODE genetics / Amgen Inc, Reykjavik, Capital, Iceland
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Barker T, Yan M, Hussain A, Kapur K, Brassett C, Pasapula C, Norrish AR. The role of cadaveric simulation in talus fracture research: A scoping review. Foot Ankle Surg 2022; 28:1177-1182. [PMID: 35798617 DOI: 10.1016/j.fas.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/14/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Talus fractures are rare (<1% of all fractures), and their rarity limits the number of studies available to guide management. In instances such as this, cadaveric studies can play an important role. The purpose of this scoping review was to identify and describe the current body of literature on cadaveric studies of fractures of the talus. METHODS Through multiple electronic database searches (Medline, Embase, Scopus) we identified a broad body of cadaveric research into talus fractures, and these were classified into 4 main themes. Study characteristics were summarised along with any descriptive results and conclusions. RESULTS The search yielded 484 articles of which 19 met the inclusion criteria. They provide valuable insights into benefits and drawbacks of surgical approaches to the talus, particularly with regard to direct visualisation of anatomic reduction, and risks of neurovascular or tendon compromise. For talar neck fractures it is clear that cannulated screws offer superior fixation over plates, however, are inferior when considering anatomic reduction of the fracture. Direct visualisation of fracture reduction is far superior to intraoperative radiographic assessment, and mal-reduction leads to reduced subtalar joint range of motion, midfoot deformity, and increased joint contact pressures. CONCLUSIONS This study provides a summary of the existing literature surrounding the use of cadaver studies in fractures of the talus. We have identified gaps in the literature, particularly surrounding strength of fixation of new locking plate fixation techniques.
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Affiliation(s)
- T Barker
- Queen Elizabeth Hospital Kings Lynn, NHS Foundation Trust, United Kingdom.
| | - M Yan
- Human Anatomy Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - A Hussain
- Human Anatomy Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - K Kapur
- Human Anatomy Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - C Brassett
- Human Anatomy Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - C Pasapula
- Queen Elizabeth Hospital Kings Lynn, NHS Foundation Trust, United Kingdom
| | - A R Norrish
- Queen Elizabeth Hospital Kings Lynn, NHS Foundation Trust, United Kingdom; Human Anatomy Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
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Walton NA, Hafen B, Graceffo S, Sutherland N, Emmerson M, Palmquist R, Formea CM, Purcell M, Heale B, Brown MA, Danford CJ, Rachamadugu SI, Person TN, Shortt KA, Christensen GB, Evans JM, Raghunath S, Johnson CP, Knight S, Le VT, Anderson JL, Van Meter M, Reading T, Haslem DS, Hansen IC, Batcher B, Barker T, Sheffield TJ, Yandava B, Taylor DP, Ranade-Kharkar P, Giauque CC, Eyring KR, Breinholt JW, Miller MR, Carter PR, Gillman JL, Gunn AW, Knowlton KU, Bonkowsky JL, Stefansson K, Nadauld LD, McLeod HL. The Development of an Infrastructure to Facilitate the Use of Whole Genome Sequencing for Population Health. J Pers Med 2022; 12:jpm12111867. [PMID: 36579594 PMCID: PMC9693138 DOI: 10.3390/jpm12111867] [Citation(s) in RCA: 4] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/29/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
The clinical use of genomic analysis has expanded rapidly resulting in an increased availability and utility of genomic information in clinical care. We have developed an infrastructure utilizing informatics tools and clinical processes to facilitate the use of whole genome sequencing data for population health management across the healthcare system. Our resulting framework scaled well to multiple clinical domains in both pediatric and adult care, although there were domain specific challenges that arose. Our infrastructure was complementary to existing clinical processes and well-received by care providers and patients. Informatics solutions were critical to the successful deployment and scaling of this program. Implementation of genomics at the scale of population health utilizes complicated technologies and processes that for many health systems are not supported by current information systems or in existing clinical workflows. To scale such a system requires a substantial clinical framework backed by informatics tools to facilitate the flow and management of data. Our work represents an early model that has been successful in scaling to 29 different genes with associated genetic conditions in four clinical domains. Work is ongoing to optimize informatics tools; and to identify best practices for translation to smaller healthcare systems.
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Affiliation(s)
- Nephi A. Walton
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
- Correspondence:
| | - Brent Hafen
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Sara Graceffo
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Nykole Sutherland
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Melanie Emmerson
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Rachel Palmquist
- Department of Pediatrics, University of Utah, Salt Lake City, UT 84108, USA
- Center for Personalized Medicine, Primary Children’s Hospital, Intermountain Healthcare, Salt Lake City, UT 84113, USA
| | - Christine M. Formea
- Department of Pharmacy, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Maricel Purcell
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Bret Heale
- Humanized Health Consulting, Salt Lake City, UT 84102, USA
| | | | | | - Sumathi I. Rachamadugu
- Department of Bioinformatics and Genomics, Pennsylvania State University, University Park, PA 16802, USA
| | - Thomas N. Person
- John Hopkins Genomics—DNA Diagnostics Laboratory, Department of Genetic Medicine, John Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | | | - G. Bryce Christensen
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Jared M. Evans
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Sharanya Raghunath
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Christopher P. Johnson
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Stacey Knight
- Department of Cardiology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Viet T. Le
- Department of Cardiology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Jeffrey L. Anderson
- Department of Cardiology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Margaret Van Meter
- Department of Medical Oncology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Teresa Reading
- Department of Surgery, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Derrick S. Haslem
- Department of Cardiology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Ivy C. Hansen
- School of Medicine, University of Utah, Salt Lake City, UT 84132, USA
| | - Betsey Batcher
- Department of Endocrinology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Tyler Barker
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Travis J. Sheffield
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Bhaskara Yandava
- Digital Technology Services, Intermountain Healthcare, Salt Lake City, UT 84130, USA
| | - David P. Taylor
- Digital Technology Services, Intermountain Healthcare, Salt Lake City, UT 84130, USA
| | | | - Christopher C. Giauque
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Kenneth R. Eyring
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Jesse W. Breinholt
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Mickey R. Miller
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Payton R. Carter
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Jason L. Gillman
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Andrew W. Gunn
- Center for Personalized Medicine, Primary Children’s Hospital, Intermountain Healthcare, Salt Lake City, UT 84113, USA
| | - Kirk U. Knowlton
- Department of Cardiology, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Joshua L. Bonkowsky
- Department of Pediatrics, University of Utah, Salt Lake City, UT 84108, USA
- Center for Personalized Medicine, Primary Children’s Hospital, Intermountain Healthcare, Salt Lake City, UT 84113, USA
| | | | - Lincoln D. Nadauld
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
| | - Howard L. McLeod
- Intermountain Precision Genomics, Intermountain Healthcare, Salt Lake City, UT 84107, USA
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Barker T, D'hulst P, Fong E. Urethro-venous fistula following straddle injury: A case report and image series. Urol Case Rep 2022; 45:102184. [PMID: 36016722 PMCID: PMC9396026 DOI: 10.1016/j.eucr.2022.102184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/25/2022] [Accepted: 07/31/2022] [Indexed: 10/30/2022] Open
Abstract
We present a case of a 49-year-old man with an acute traumatic urethral injury after a fall onto a fence post. Retrograde contrast study showed a contrast leak and suspicion of a traumatic urethro-venous fistula. We successfully placed a urethral indwelling catheter (IDC) in the operating room and follow-up urethrocystoscopy showed healing of the injury. The patient remained asymptomatic during further follow-up visits.
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9
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Gavile CM, Kazmers NH, Novak KA, Meeks HD, Yu Z, Thomas JL, Hansen C, Barker T, Jurynec MJ. Familial Clustering and Genetic Analysis of Severe Thumb Carpometacarpal Joint Osteoarthritis in a Large Statewide Cohort. J Hand Surg Am 2022; 47:923-933. [PMID: 36184273 PMCID: PMC9547951 DOI: 10.1016/j.jhsa.2022.08.004] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/29/2022] [Accepted: 08/04/2022] [Indexed: 02/02/2023]
Abstract
PURPOSE Our goals were to identify individuals who required surgery for thumb carpometacarpal (CMC) joint osteoarthritis (OA), determine if CMC joint OA clusters in families, define the magnitude of familial risk of CMC joint OA, identify risk factors associated with CMC joint OA, and identify rare genetic variants that segregate with familial CMC joint OA. METHODS We searched the Utah Population Database to identify a cohort of CMC joint OA patients who required surgery. Affected individuals were mapped to pedigrees to identify high-risk families with excess clustering of CMC joint OA. Cox regression models were used to calculate familial risk of CMC joint OA in related individuals. Risk factors were evaluated using logistic regression models. Whole exome sequencing was used to identify rare coding variants associated with familial CMC joint OA. RESULTS We identified 550 pedigrees with excess clustering of severe CMC joint OA. The relative risk of CMC joint OA requiring surgical treatment was elevated significantly in first- and third-degree relatives of affected individuals, and significant associations with advanced age, female sex, obesity, and tobacco use were observed. We discovered candidate genes that dominantly segregate with severe CMC joint OA in 4 independent families, including a rare variant in Chondroitin Sulfate Synthase 3 (CHSY3). CONCLUSIONS Familial clustering of severe CMC joint OA was observed in a statewide population. Our data indicate that genetic and environmental factors contribute to the disease process, further highlighting the multifactorial nature of the disease. Genomic analyses suggest distinct biological processes are involved in CMC joint OA pathogenesis. CLINICAL RELEVANCE Awareness of associated comorbidities may guide the diagnosis of CMC joint OA in at-risk populations and help identify individuals who may not do well with nonoperative treatment. Further pursuit of the genes associated with severe CMC joint OA may lead to assays for detection of early stages of disease and have therapeutic potential.
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Affiliation(s)
| | | | - Kendra A Novak
- Department of Orthopaedics, University of Utah, Salt Lake City, UT
| | - Huong D Meeks
- Huntsman Cancer Institute, Utah Population Database, University of Utah, Salt Lake City, UT
| | - Zhe Yu
- Huntsman Cancer Institute, Utah Population Database, University of Utah, Salt Lake City, UT
| | - Joy L Thomas
- Intermountain Healthcare, Precision Genomics, St. George, UT
| | - Channing Hansen
- Intermountain Healthcare, Biorepository, South Salt Lake City, UT
| | - Tyler Barker
- Department of Orthopaedics, University of Utah, Salt Lake City, UT; Intermountain Healthcare, Precision Genomics, Murray, UT; Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Michael J Jurynec
- Department of Orthopaedics, University of Utah, Salt Lake City, UT; Department of Human Genetics, University of Utah, Salt Lake City, UT.
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Barker T. Comment on: Association of serum levels of inflammatory markers and adipokines with joint symptoms and structures in participants with knee osteoarthritis. Rheumatology (Oxford) 2021; 60:e414-e415. [PMID: 34508556 DOI: 10.1093/rheumatology/keab656] [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] [Received: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tyler Barker
- Precision Genomics, Intermountain Healthcare.,Department of Orthopaedics, University of Utah.,Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
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11
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Barker T, Gill D, Khatun F, Lutchman L. Anterior cervical osteophytes causing dysphagia and dyspnoea. Ann R Coll Surg Engl 2021; 103:e209-e211. [PMID: 34192493 DOI: 10.1308/rcsann.2020.7062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 75-year-old man presents to his general practitioner (GP) with dyspnoea, and dysphagia to liquids and solids, with regurgitation causing recurrent episodes of dyspnoea. He had a background of osteoarthritis, was an ex heavy smoker and had undergone coronary artery bypass graft five years previously. After several emergency admissions, initial investigation by the GP, and referral to ear, nose and throat specialists with no cause for dysphagia found, he underwent computed tomography imaging of the neck and thorax which demonstrated large cervical osteophytes at the level of C3-C4. He was referred to spinal orthopaedics and after multidisciplinary team discussion the cervical osteophytes were removed via an anterior approach, resulting in complete resolution of his symptoms.
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Affiliation(s)
- T Barker
- Norfolk and Norwich University Hospital NHS Trust, UK
| | - D Gill
- Norfolk and Norwich University Hospital NHS Trust, UK
| | - F Khatun
- Norfolk and Norwich University Hospital NHS Trust, UK
| | - L Lutchman
- Norfolk and Norwich University Hospital NHS Trust, UK
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12
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Klein AH, Motti CA, Hillberg AK, Ventura T, Thomas-Hall P, Armstrong T, Barker T, Whatmore P, Cummins SF. Development and Interrogation of a Transcriptomic Resource for the Giant Triton Snail (Charonia tritonis). Mar Biotechnol (NY) 2021; 23:501-515. [PMID: 34191212 PMCID: PMC8270824 DOI: 10.1007/s10126-021-10042-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 06/03/2021] [Indexed: 06/01/2023]
Abstract
Gastropod molluscs are among the most abundant species that inhabit coral reef ecosystems. Many are specialist predators, along with the giant triton snail Charonia tritonis (Linnaeus, 1758) whose diet consists of Acanthaster planci (crown-of-thorns starfish), a corallivore known to consume enormous quantities of reef-building coral. C. tritonis are considered vulnerable due to overexploitation, and a decline in their populations is believed to have contributed to recurring A. planci population outbreaks. Aquaculture is considered one approach that could help restore natural populations of C. tritonis and mitigate coral loss; however, numerous questions remain unanswered regarding their life cycle, including the molecular factors that regulate their reproduction and development. In this study, we have established a reference C. tritonis transcriptome derived from developmental stages (embryo and veliger) and adult tissues. This was used to identify genes associated with cell signalling, such as neuropeptides and G protein-coupled receptors (GPCRs), involved in endocrine and olfactory signalling. A comparison of developmental stages showed that several neuropeptide precursors are exclusively expressed in post-hatch veligers and functional analysis found that FFamide stimulated a significant (20.3%) increase in larval heart rate. GPCRs unique to veligers, and a diversity of rhodopsin-like GPCRs located within adult cephalic tentacles, all represent candidate olfactory receptors. In addition, the cytochrome P450 superfamily, which participates in the biosynthesis and degradation of steroid hormones and lipids, was also found to be expanded with at least 91 genes annotated, mostly in gill tissue. These findings further progress our understanding of C. tritonis with possible application in developing aquaculture methods.
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Affiliation(s)
- A H Klein
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
| | - C A Motti
- Australian Institute of Marine Science (AIMS), Cape Ferguson, Townsville, QLD, 4810, Australia
| | - A K Hillberg
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
| | - T Ventura
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
| | - P Thomas-Hall
- Australian Institute of Marine Science (AIMS), Cape Ferguson, Townsville, QLD, 4810, Australia
| | - T Armstrong
- Australian Institute of Marine Science (AIMS), Cape Ferguson, Townsville, QLD, 4810, Australia
| | - T Barker
- Australian Institute of Marine Science (AIMS), Cape Ferguson, Townsville, QLD, 4810, Australia
| | - P Whatmore
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
- eResearch Office, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - S F Cummins
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia.
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia.
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13
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Sandhu Z, Sanchez-Garcia J, Barker T, Raghunath S, Shortt K, Hwang SH, Fulde G, Zendejas-Ruiz IR, Haslem DS, Yeatman TJ, Thota R. Immune related biomarkers in biliary tract cancers (BTC). J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.e16191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e16191 Background: Biliary tract cancers are aggressive tumors with limited treatment options. Several ongoing clinical trials are currently exploring role of immune therapy in advanced BTC. Programmed death-ligand 1 (PD-L1), tumor mutational burden (TMB), and microsatellite instability (MSI) are commonly used immune related-biomarkers. Herein, we analyzed the TMB, MSI and PD-L1 expression in advanced BTC. Methods: We retrospectively evaluated the association of TMB, MSI and PD-L1 expression with survival and related treatment outcomes. Results: The immune mediated biomarkers were reported in a total of 62 BTC patients (pts). The mean age of the pts is 73 (range 32-83) years, with predominant females (59%) and Caucasians (82%). The most common histology noted was intrahepatic cholangiocarcinoma (67%) followed by extrahepatic cholangiocarcinoma (18%) and gallbladder carcinoma (15%). Approximately, 40% received 2 or more lines of therapy while 20% of patients didn’t receive any treatment and over. The treatment regimen included gemcitabine-based regimen (35%), 5FU based regimen (18%), immune therapy (15%) and targeted therapy (6%). The TMB was low in 52 pts (83%), intermediate 7 pts (11%) and high in 2 pts (3%). MSI is stable in 55 pts (89%) and PD-L1 expression is negative in 29 pts (47%) and positive in 23 pts (37%). Conclusions: Our data suggests the BTC’s have in general low TMB, are microsatellite stable and have low PD-L1 expression. The potential prognostic and predictive value of these immune related- biomarkers need to be validated in larger studies.
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Affiliation(s)
- Zoya Sandhu
- Rocky Vista University College of Osteopathic Medicine, Irvins, UT
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14
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Gillam TB, Cole J, Gharbi K, Angiolini E, Barker T, Bickerton P, Brabbs T, Chin J, Coen E, Cossey S, Davey R, Davidson R, Durrant A, Edwards D, Hall N, Henderson S, Hitchcock M, Irish N, Lipscombe J, Jones G, Parr G, Rushworth S, Shearer N, Smith R, Steel N. Norwich COVID-19 testing initiative pilot: evaluating the feasibility of asymptomatic testing on a university campus. J Public Health (Oxf) 2021; 43:82-88. [PMID: 33124664 PMCID: PMC7665602 DOI: 10.1093/pubmed/fdaa194] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/01/2020] [Accepted: 10/07/2020] [Indexed: 11/13/2022] Open
Abstract
Background There is a high prevalence of COVID-19 in university-age students, who are returning to campuses. There is little evidence regarding the feasibility of universal, asymptomatic testing to help control outbreaks in this population. This study aimed to pilot mass COVID-19 testing on a university research park, to assess the feasibility and acceptability of scaling up testing to all staff and students. Methods This was a cross-sectional feasibility study on a university research park in the East of England. All staff and students (5625) were eligible to participate. All participants were offered four PCR swabs, which they self-administered over two weeks. Outcome measures included uptake, drop-out rate, positivity rates, participant acceptability measures, laboratory processing measures, data collection and management measures. Results 798 (76%) of 1053 who registered provided at least one swab; 687 (86%) provided all four; 792 (99%) of 798 who submitted at least one swab had all negative results and 6 participants had one inconclusive result. There were no positive results. 458 (57%) of 798 participants responded to a post-testing survey, demonstrating a mean acceptability score of 4.51/5, with five being the most positive. Conclusions Repeated self-testing for COVID-19 using PCR is feasible and acceptable to a university population.
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Affiliation(s)
- T Berger Gillam
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - J Cole
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - K Gharbi
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - E Angiolini
- Scientific Training and Education, Earlham Institute, Norwich NR4 7UZ, UK
| | - T Barker
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - P Bickerton
- Communications, Earlham Institute, Norwich NR4 7UZ, UK
| | - T Brabbs
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - J Chin
- School of Computing Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - E Coen
- John Innes Centre, Norwich NR4 7UH, UK
| | - S Cossey
- Earlham Institute, Norwich NR4 7UZ, UK
| | - R Davey
- Earlham Institute, Norwich NR4 7UZ, UK
| | - R Davidson
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - A Durrant
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - D Edwards
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - N Hall
- Earlham Institute, Norwich NR4 7UZ, UK.,UEA Biosciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - S Henderson
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - M Hitchcock
- UEA Health and Social Care Partners, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - N Irish
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - J Lipscombe
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - G Jones
- Communications, Earlham Institute, Norwich NR4 7UZ, UK
| | - G Parr
- School of Computing Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - S Rushworth
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - N Shearer
- Genomics Pipelines, Earlham Institute, Norwich, NR4 7UZ, UK
| | - R Smith
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - N Steel
- Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK
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15
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Kazmers NH, Meeks HD, Novak KA, Yu Z, Fulde GL, Thomas JL, Barker T, Jurynec MJ. Familial Clustering of Erosive Hand Osteoarthritis in a Large Statewide Cohort. Arthritis Rheumatol 2021; 73:440-447. [PMID: 32940959 PMCID: PMC7914133 DOI: 10.1002/art.41520] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 04/23/2020] [Accepted: 09/04/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Erosive hand osteoarthritis (OA) is a severe and rapidly progressing subset of hand OA. Its etiology remains largely unknown, which has hindered development of successful treatments. This study was undertaken to test the hypothesis that erosive hand OA demonstrates familial clustering in a large statewide population linked to genealogical records, and to determine the association of potential risk factors with erosive hand OA. METHODS Patients diagnosed as having erosive hand OA were identified by searching 4,741,840 unique medical records from a comprehensive statewide database, the Utah Population Database (UPDB). Affected individuals were mapped to pedigrees to identify high-risk families with excess clustering of erosive hand OA as defined by a familial standardized incidence ratio (FSIR) of ≥2.0. The magnitude of familial risk of erosive hand OA in related individuals was calculated using Cox regression models. Association of potential erosive hand OA risk factors was analyzed using multivariate conditional logistic regression and logistic regression models. RESULTS We identified 703 affected individuals linked to 240 unrelated high-risk pedigrees with excess clustering of erosive hand OA (FSIR ≥2.0, P < 0.05). The relative risk of developing erosive hand OA was significantly elevated in first-degree relatives (P < 0.001). There were significant associations between a diagnosis of erosive hand OA and age, sex, diabetes, and obesity (all P < 0.05). CONCLUSION Familial clustering of erosive hand OA observed in a statewide database indicates a potential genetic contribution to the etiology of the disease. Age, sex, diabetes, and obesity are risk factors for erosive hand OA. Identification of causal gene variants in these high-risk families may provide insight into the genes and pathways that contribute to erosive hand OA onset and progression.
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Affiliation(s)
- Nikolas H. Kazmers
- Department of Orthopaedics, University of Utah, Salt Lake City, UT 84108
| | - Huong D. Meeks
- Population Science, Huntsman Cancer Institute, University of Utah Health, Salt Lake City, UT 84112
| | - Kendra A. Novak
- Department of Orthopaedics, University of Utah, Salt Lake City, UT 84108
| | - Zhe Yu
- Population Science, Huntsman Cancer Institute, University of Utah Health, Salt Lake City, UT 84112
| | - Gail L. Fulde
- Intermountain Healthcare, Precision Genomics, St. George, UT 84790
| | - Joy L. Thomas
- Intermountain Healthcare, Precision Genomics, St. George, UT 84790
| | - Tyler Barker
- Intermountain Healthcare, Precision Genomics, Murray, UT 84107
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112
| | - Michael J. Jurynec
- Department of Orthopaedics, University of Utah, Salt Lake City, UT 84108
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16
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Barker T, May HT, Doty JR, Lappe DL, Knowlton KU, Carlquist J, Konery K, Inglet S, Chisum B, Galenko O, Anderson JL, Muhlestein JB. Vitamin D supplementation protects against reductions in plasma 25-hydroxyvitamin D induced by open-heart surgery: Assess-d trial. Physiol Rep 2021; 9:e14747. [PMID: 33580636 PMCID: PMC7881347 DOI: 10.14814/phy2.14747] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 12/28/2022] Open
Abstract
Low vitamin D (serum or plasma 25‐hydroxyvitamin D (25(OH)D)) is a global pandemic and associates with a greater prevalence in all‐cause and cardiovascular mortality and morbidity. Open‐heart surgery is a form of acute stress that decreases circulating 25(OH)D concentrations and exacerbates the preponderance of low vitamin D in a patient population already characterized by low levels. Although supplemental vitamin D increases 25(OH)D, it is unknown if supplemental vitamin D can overcome the decreases in circulating 25(OH)D induced by open‐heart surgery. We sought to identify if supplemental vitamin D protects against the acute decrease in plasma 25(OH)D propagated by open‐heart surgery during perioperative care. Participants undergoing open‐heart surgery were randomly assigned (double‐blind) to one of two groups: (a) vitamin D (n = 75; cholecalciferol, 50,000 IU/dose) or (b) placebo (n = 75). Participants received supplements on three separate occasions: orally the evening before surgery and either orally or per nasogastric tube on postoperative days 1 and 2. Plasma 25(OH)D concentrations were measured at baseline (the day before surgery and before the first supplement bolus), after surgery on postoperative days 1, 2, 3, and 4, at hospital discharge (5–8 days after surgery), and at an elective outpatient follow‐up visit at 6 months. Supplemental vitamin D abolished the acute decrease in 25(OH)D induced by open‐heart surgery during postoperative care. Moreover, plasma 25(OH)D gradually increased from baseline to day 3 and remained significantly increased thereafter but plateaued to discharge with supplemental vitamin D. We conclude that perioperative vitamin D supplementation protects against the immediate decrease in plasma 25(OH)D induced by open‐heart surgery. ClinicalTrials.gov Identifier: NCT02460211.
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Affiliation(s)
- Tyler Barker
- Precision Genomics, Intermountain Healthcare, St. George, Utah, USA.,Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, USA
| | - Heidi T May
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - John R Doty
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA.,School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Donald L Lappe
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA.,School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Kirk U Knowlton
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA.,School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - John Carlquist
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Kristin Konery
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Shannon Inglet
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Ben Chisum
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Oxana Galenko
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Jeffrey L Anderson
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA.,School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Joseph B Muhlestein
- Heart Institute, Intermountain Healthcare, Salt Lake City, Utah, USA.,School of Medicine, University of Utah, Salt Lake City, Utah, USA
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17
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Barker T, Henriksen VT, Rogers VE, Trawick RH, Momberger NG, Lynn Rasmussen G. Multi-vitamin supplementation blunts the circulating IL-6/IL-10 ratio increase after knee arthroplasty: A randomized, double-blind, placebo controlled study. Cytokine 2021; 140:155435. [PMID: 33497870 DOI: 10.1016/j.cyto.2021.155435] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/21/2020] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
Circulating interleukin (IL)-6 and IL-10 concentrations can be elevated following the surgically induced trauma of total knee arthroplasty (TKA). An exaggerated increase in IL-6 relative to IL-10 (i.e., IL-6/IL-10 ratio) associates with trauma severity and indicative of pro-inflammatory predominance. Although various vitamins and minerals alter individual IL-6 and IL-10 concentrations in the blood, surprisingly, it is unknown if a multi-vitamin supplement alters the IL-6/IL-10 ratio during the systemic inflammatory response following TKA. The objective of this study was to identify if a multi-vitamin with mineral supplement taken prior to alters the circulating IL-6/IL-10 ratio following total knee arthroplasty (TKA). This study consisted of a randomized, double-blind, placebo controlled design. Twenty-one subjects undergoing elective, primary, unilateral TKA were randomly assigned to a placebo (PL, n = 11) or multi-vitamin with mineral supplement (MV, n = 10). Supplements were taken daily starting approximately 6-weeks prior to surgery. Supplements were not taken the day of surgery or during inpatient care 2-days after surgery. Circulating IL-6, IL-10, high-sensitivity CRP (hsCRP), vitamin C (ascorbic acid (AA)), vitamin D (25-hydroxyvitamin D (25(OH)D)), and vitamin E (α-tocopherol (αT)) concentrations were measured in fasting blood draw samples obtained ~6-weeks prior to surgery (and before starting supplementation), the morning of surgery, and 24-hours and 48-hours after surgery. MV supplementation tended to increase serum 25(OH)D and significantly increased plasma AA and plasma αT before surgery without mitigating the post-operative IL-6 and hsCRP increases. However, the post-operative increase in the serum IL-6/IL-10 ratio after surgery was significantly blunted in the MV group. Based on these findings, we conclude that a multi-vitamin with mineral supplement taken daily for several weeks before surgery might reduce the pro-inflammatory predominance after TKA. Future research confirming or refuting the novel data presented herein is needed.
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Affiliation(s)
- Tyler Barker
- Precision Genomics, Intermountain Healthcare, Murray, UT 84123, USA; Department of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA.
| | - Vanessa T Henriksen
- The Orthopedic Specialty Hospital, Intermountain Healthcare, Murray, UT 84107, USA
| | - Victoria E Rogers
- The Orthopedic Specialty Hospital, Intermountain Healthcare, Murray, UT 84107, USA
| | - Roy H Trawick
- The Orthopedic Specialty Hospital, Intermountain Healthcare, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Intermountain Healthcare, Murray, UT 84107, USA
| | - Nathan G Momberger
- The Orthopedic Specialty Hospital, Intermountain Healthcare, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Intermountain Healthcare, Murray, UT 84107, USA
| | - G Lynn Rasmussen
- The Orthopedic Specialty Hospital, Intermountain Healthcare, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Intermountain Healthcare, Murray, UT 84107, USA
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18
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Barker T, Rogers VE, Henriksen VT, Trawick RH, Momberger NG, Lynn Rasmussen G. Circulating IL-10 is compromised in patients predisposed to developing and in patients with severe knee osteoarthritis. Sci Rep 2021; 11:1812. [PMID: 33469085 PMCID: PMC7815723 DOI: 10.1038/s41598-021-81382-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 08/17/2020] [Accepted: 01/06/2021] [Indexed: 01/29/2023] Open
Abstract
The purpose of this investigation was to identify if serum interleukin (IL)-10 and tumor necrosis factor (TNF)-α concentrations and their ratio (IL-10/TNF-α) are altered in subjects predisposed to developing knee osteoarthritis following ligamentous injury and in those with severe knee osteoarthritis. Serum IL-10 and TNF-α concentrations were measured in four groups of subjects (n = 218): (1) reportedly-healthy and non-injured control subjects (CON; n = 92), (2) subjects scheduled to undergo anterior cruciate ligament surgery (ACL; n = 42), (3) non-surgical subjects with knee osteoarthritis (OA; n = 60), and (4) subjects with knee osteoarthritis scheduled to undergo total knee arthroplasty (TKA; n = 24). X-ray images were used to grade the severity of knee osteoarthritis. Serum IL-10 and the serum IL-10/TNF-α ratio were significantly lower while serum TNF-α was not significantly perturbed with severe compared to moderate knee osteoarthritis (i.e., Kellgren-Lawrence grade 4 vs. 3, respectively). Serum IL-10 was significantly lower in the absence of serum TNF-α alterations in the ACL group. We conclude that serum IL-10 concentrations are compromised in subjects predisposed to developing knee osteoarthritis following ligamentous trauma and in subjects with radiographic evidence of severe knee osteoarthritis.
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Affiliation(s)
- Tyler Barker
- grid.420884.20000 0004 0460 774XPrecision Genomics, Intermountain Healthcare, 383 W. Vine Street, Suite #300, Murray, UT 84107 USA ,grid.223827.e0000 0001 2193 0096Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112 USA
| | - Victoria E. Rogers
- grid.416945.b0000 0004 0442 6615The Orthopedic Specialty Hospital, Murray, UT 84107 USA
| | - Vanessa T. Henriksen
- grid.416945.b0000 0004 0442 6615The Orthopedic Specialty Hospital, Murray, UT 84107 USA
| | - Roy H. Trawick
- grid.416945.b0000 0004 0442 6615The Orthopedic Specialty Hospital, Murray, UT 84107 USA ,The Orthopedic Specialty Clinic, Murray, UT 84107 USA
| | - Nathan G. Momberger
- grid.416945.b0000 0004 0442 6615The Orthopedic Specialty Hospital, Murray, UT 84107 USA ,The Orthopedic Specialty Clinic, Murray, UT 84107 USA
| | - G. Lynn Rasmussen
- grid.416945.b0000 0004 0442 6615The Orthopedic Specialty Hospital, Murray, UT 84107 USA ,The Orthopedic Specialty Clinic, Murray, UT 84107 USA
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19
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Barker T, Fulde G, Moulton B, Nadauld LD, Rhodes T. An elevated neutrophil-to-lymphocyte ratio associates with weight loss and cachexia in cancer. Sci Rep 2020; 10:7535. [PMID: 32371869 PMCID: PMC7200806 DOI: 10.1038/s41598-020-64282-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 04/14/2020] [Indexed: 11/24/2022] Open
Abstract
Systemic inflammation is present during and serves as a diagnostic tool for cancer-associated cachexia and is detrimental to serum 25-hydroxyvitamin D (25(OH)D) concentrations in non-cancer conditions. The neutrophil-to-lymphocyte ratio (NLR) is a desirable measure of systemic inflammation because it is easily calculated from a routine complete blood cell count with differentials. We sought to determine if an elevation in the NLR associates with greater weight loss, cachexia, and lower serum 25-hydroxyvitamin D (25(OH)D) concentrations in patients with advanced cancer. Advanced colon, lung, and prostate cancer patients (stages III/IV; n = 50) were retrospectively studied and separated into one of two groups: 1) Above (n = 25) or 2) Below (n = 25) the median NLR of 3.15 determined at diagnosis. Around the time of diagnosis, serum 25(OH)D and body weight were assessed, while body weight was assessed again at a later date. Weight loss and cachexia were significantly (both p < 0.05) greater and there was a trend (p < 0.10) for lower serum 25(OH)D concentrations in the Above group. We conclude that an elevation in the NLR associates with greater weight loss and cachexia, and potentially, a lower serum 25(OH)D concentration in patients with advanced colon, lung, or prostate cancer.
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Affiliation(s)
- Tyler Barker
- Precision Genomics, Intermountain Healthcare, St. George, UT 84790, USA. .,Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA.
| | - Gail Fulde
- Precision Genomics, Intermountain Healthcare, St. George, UT 84790, USA
| | - Bryce Moulton
- Precision Genomics, Intermountain Healthcare, St. George, UT 84790, USA
| | - Lincoln D Nadauld
- Precision Genomics, Intermountain Healthcare, St. George, UT 84790, USA.,School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Terence Rhodes
- Precision Genomics, Intermountain Healthcare, St. George, UT 84790, USA
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20
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Kazmers NH, Yu Z, Barker T, Abraham T, Romero R, Jurynec MJ. Evaluation for Kienböck Disease Familial Clustering: A Population-Based Cohort Study. J Hand Surg Am 2020; 45:1-8.e1. [PMID: 31761504 PMCID: PMC6943177 DOI: 10.1016/j.jhsa.2019.10.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/15/2019] [Accepted: 10/16/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE Kienböck disease (KD) is rare and its etiology remains unknown. As a result, the ideal treatment is also in question. Our primary purpose was to test the hypothesis that KD would demonstrate familial clustering in a large statewide population with comprehensive genealogical records, possibly suggesting a genetic etiologic contribution. Our secondary purpose was to evaluate for associations between KD and known risk factors for avascular necrosis. METHODS Patients diagnosed with KD were identified by searching medical records from a comprehensive statewide database, the Utah Population Database. This database contains pedigrees dating back to the early 1800s, which are linked to 31 million medical records for 11 million patients from 1996 to the present. Affected individuals were then mapped to pedigrees to identify high-risk families with an increased incidence of KD relative to control pedigrees. The magnitude of familial risk of KD in related individuals was calculated using Cox regression models. Association of risk factors related to KD was analyzed using conditional logistic regression. RESULTS We identified 394 affected individuals linked to 194 unrelated high-risk pedigrees with increased incidence of KD. The relative risk of developing KD was significantly elevated in first-degree relatives. There was a significant correlation between alcohol, glucocorticoid, and tobacco use and a history of diabetes, and the diagnosis of KD. CONCLUSIONS Familial clustering of KD observed in the Utah Population Database cohort indicates a potential genetic contribution to the etiology of the disease. Identification of causal gene variants in these high-risk families may provide insight into the genes and pathways that contribute to the onset and progression of KD. CLINICAL RELEVANCE This study suggests that there is a potential genetic contribution to the etiology of KD and that the disease has a significant association with several risk factors.
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Affiliation(s)
| | - Zhe Yu
- Utah Population Database Resource, Huntsman Cancer Institute, Salt Lake City, UT
| | - Tyler Barker
- Intermountain Healthcare, Precision Genomics, Murray, UT; Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Tyler Abraham
- Intermountain Healthcare, Precision Genomics, St George, UT
| | - Robin Romero
- Intermountain Healthcare, Precision Genomics, St George, UT
| | - Michael J Jurynec
- Department of Orthopaedics, University of Utah, Salt Lake City, UT; George and Dolores Eccles Institute of Human Genetics, University of Utah, Salt Lake City, UT
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Thota R, Christensen B, Fulde G, Lewis MA, Haslem DS, Rhodes TD, Nadauld L, Barker T. Characterization of the tumor mutation burden in hepatobiliary tumors. J Clin Oncol 2019. [DOI: 10.1200/jco.2019.37.4_suppl.295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
295 Background: Hepatobiliary tumors are aggressive tumors with emerging evidence for increasing sensitivity to immune checkpoint inhibitors (ICI). Tumor mutation burden (TMB) was found to be a quantitative biomarker associated with production of neoantigens within the tumor and predict the sensitivity to immune therapy. Herein, we explore the TMB as a potential biomarker of response to immune therapy in hepatobiliary tumors. Methods: We retrospectively assessed all patients with hepatobiliary malignancies who have undergone next generation sequencing (NGS) between January 2013 and September 2018. We then analyzed the tumor mutation burden of these tumors and also identified frequency of patients with no clinically actionable mutations. Results: Of the 65 total patients with hepatobiliary tumors, 49 patients (75%) had at least one clinically actionable mutation while 16 patients (25%) had no clinically actionable mutations. Among 65 patients, 44 patients had hepatocellular carcinoma, 15 patients had cholangiocarcinoma and 6 patients had gallbladder carcinoma. The TMB data is available for 15 patients. The mean TMB reported was 2.7 (1.16 – 4.25), which suggests low mutation burden in general in all our HB tumors. Among the patients with available TMB, the underlying risk factor was noted as hepatitis C in 3, NASH in 1, others in 6, unknown in 5 patients. Conclusions: Our data suggests the TMB in hepatobiliary tumors is low in general irrespective of their underlying risk factors. Future larger studies are needed to evaluate TMB as a potential biomarker in hepatobiliary tumors to help select patients that will benefit from immune therapy.
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Muhlestein JB, Doty JR, Lappe D, Knowlton K, May H, Barker T, Carlquist J, Konery K, Inglet S, Chisum B, Le VT, Galenko O, Anderson J. ACUTE EFFECTS OF CARDIAC SURGERY ON 25 (OH) VITAMIN D (VITD) LEVELS AND RESPONSE TO VITD SUPPLEMENTATION: PRIMARY RESULTS OF THE ASSESS-D STUDY. J Am Coll Cardiol 2018. [DOI: 10.1016/s0735-1097(18)31935-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Rhodes TD, Fulde G, Romero R, Abraham T, Moulton B, Van Meter M, Thota R, Lewis MA, Haslem DS, Nadauld L, Barker T. Association of the neutrophil-to-lymphocyte ratio prior to checkpoint blockade immunotherapy (CBI) or radiation plus CBI with overall survival in melanoma patients. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.5_suppl.200] [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: 11/20/2022] Open
Abstract
200 Background: Studies in certain cancer types have indicated that radiation therapy prior to the use of CBI provides a survival benefit. This benefit has not been clearly defined for patients with metastatic melanoma. Additionally, the neutrophil-to-lymphocyte ratio (NLR) may be a potential biomarker. Methods: This retrospective study was performed in patients diagnosed with melanoma between January 2007 and August 2016 who received CBI with or without previous radiation treatment at Intermountain Healthcare (Utah, USA). Cases were identified from electronic medical records and data was manually extracted through August of 2017. The neutrophil-to-lymphocyte ratio (NLR) was calculated from the absolute neutrophil and lymphocyte counts of a complete blood cell count with differentials performed as a routine standard of care procedure in melanoma patients prior to therapy initiation. Overall survival was defined as the length of time (d) from start of CBI to death as of August, 2017. Results: Forty-six melanoma patients were initially identified. Of these, thirteen patients were excluded due to lack of follow-up data (n = 9), radiation performed after CBI (n = 3), or concurrent radiation and CBI (n = 1). The final analysis consisted of 33 subjects separated below (NLR < 3.12, n = 16) and above (NLR ≥ 3.12, n = 17) the NLR median. Age, height, body mass, and body mass index were not significantly different between groups (p-range: 0.11-0.60). Results from the Kaplan-Meier curve indicate that a NLR above the median associates with lower overall survival (Mantel, p = 0.04) in melanoma patients receiving CBI with or without previous radiation treatment. In a separate analysis of this cohort, overall survival was not significantly influenced by radiation therapy prior to CBI. Conclusions: Although prior radiation therapy offered no survival advantage for patients receiving CBI, NLR less than 3.12 was associated with an increase in overall survival. Further studies are need to explore NLR as a biomarker.
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Thota R, Fulde G, Lewis MA, Haslem DS, Nadauld L, Moulton B, Romero R, Abraham T, Christensen B, Raghunath S, Barker T. DNA damage repair (DDR) pathway defects in gastrointestinal (GI) malignancies. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.4_suppl.647] [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: 11/20/2022] Open
Abstract
647 Background: The clinical significance of the genomic alterations associated with DDR pathway in GI tumors (besides MMR defects) is largely unknown. These patients can potentially derive benefit from targeted therapy with poly ADP ribose polymerase (PARP) inhibitors, which have already shown promising activity in ovarian, breast and prostate cancers. In this study, we investigated the frequency and clinical significance of DDR repair defects (other than MMR defects) in GI tumors. Methods: We performed a retrospective analysis of all patients who had tumor next generation sequencing performed between January 2013 and August 2017 on GI cancers harboring DDR pathway defects. Data including demographics, clinical history, and treatment were extracted from patients' records. Results: Of 299 patients with GI tumors sequenced, 35 cases (12%) were noted to have DDR defects. The most commonly mutated genes – 6 (17%) BRCA2, 5 (14%) PALB2, 4 (11%) ATM, 3 (8.6%) BRCA1, 2 (5.7%) each of NBN, MUTYH, ERCC3, PARP1 amplification and 1 (2.8%) each of ERCC2, CDK12, and PARP2 amplification. Two patients had both ATM and BRCA2 mutations. Combination of ATM and MRE11, ATM and BRCA1, BRCA1 and ERCC6, BRCA2 and CDK12 were noted in 1 patient each. Of the 23 patients with available clinical data, the median age at diagnosis was 65 (range 30–85) years with male and female prevalence rates of 60.8% and 39.2%, respectively. Stage at diagnosis was I (n = 3), II (n = 3), III (n = 8), and IV (n = 9). The primary site of tumor was found in 8 (34.8%) colon, 4 (17.4%) liver, 4 (17.4%) pancreas, 2 (8.7%) esophagus, 2 (8.7%) anus, 2 (8.7%) appendix, 1 (4.3%) rectum. Seventeen patients received platinum‐based therapy, 7 were treated with PARP inhibitors and 5 patients received both platinum and PARP inhibitor. Median overall survival from diagnosis for patients with stage I/II was 65.3 months, stage III was 23.1 months, and stage IV was 22.4 months. The median survival of patients treated with olaparib was 24.5 months. Conclusions: DDR pathway defects in GI tumors are uncommon. However, they can potentially be targeted with PARP inhibitors with durable survival. Future clinical trials are warranted to explore the role to PARP inhibitors in these unique subset of patients.
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Lewis MA, Haslem DS, Thota R, Rhodes TD, Barker T, Moulton B, Abraham T, Fulde G, Romero R, Christensen B, Nadauld L. Mutational landscape of metastatic colorectal cancer: Aggregate insights from a molecular tumor board. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.4_suppl.837] [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: 11/20/2022] Open
Abstract
837 Background: The mutational landscape of metastatic colorectal cancer (CRC) is being elucidated by next-generation sequencing of both primary tumors and metastatic foci. In this study, we examined the results of all stage IV CRC cases submitted to our molecular tumor board (MTB). Methods: We performed a retrospective analysis of all patients who had next-generation sequencing performed between January 2015 and August 2017 on either their primary tumor and/or metastasis. Cases were presented at a MTB convened twice monthly. For the purposes of this study only pathogenic mutations were notated, not variants of unknown significance (VUS). Results: Eighty-seven unique patients had 97 specimens sequenced (28 primary tumors and 69 metastases). The primaries averaged 3 mutations per specimen (range: 1-6) whereas the metastases averaged 4 (range: 1-14, p=.25). The most common anatomic sites of submitted metastatic tissue were the liver (n=35, average mutations=4), followed by the lungs (n=10, average mutations=3) and the omentum/peritoneum (n=8, average mutations=3). Two patients had both a primary tumor and a metastasis sequenced, with a 33% rate of concordance in inter-specimen mutations. Five patients had multiple metastases sequenced, with a 53% rate of concordance in inter-specimen mutations; in every case of longitudinal sequencing, mutational burden increased in metastases over time. The most common mutation was apc (21% of all mutations), followed by p53 (16%) and then kras (13%). Candidacy for EGFR-directed therapy was found in 8 cases, and mismatch repair defects were detected in 5 cases. Conclusions: In stage IV CRC cases sent to our MTB, tissue from metastases was more commonly submitted for analysis than from the primary tumors. There is not necessarily concordance between mutations in primary tumors and metastases, nor among multiple metastases in the same patient. Sequencing at multiple time points in the disease course may allow observation of clonal evolution and dynamic adaptation of therapeutic targets.
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Affiliation(s)
| | | | - Ramya Thota
- Intermountain Precision Genomics, Murray, UT
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Thota R, Lewis MA, Raghunath S, Haslem DS, Nadauld L, Rhodes TD, Moulton B, Abraham T, Romero R, Fulde G, Christensen B, Barker T. Utility of next-generation sequencing in clinical decision making in hepatocellular carcinoma (HCC). J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.4_suppl.295] [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: 11/20/2022] Open
Abstract
295 Background: HCC is a heterogeneous disease with diverse genomic alterations. The prior genomic studies have identified common alterations in TERT, P53, WNT pathways. However, most of these alterations are not targetable with current FDA approved targeted agents. In this study, we determine the clinical impact of targeted next generation sequencing in patients with advanced HCC. Methods: We retrospectively assessed all patients with gastrointestinal (GI) malignancies who have undergone next generation sequencing (NGS) between January 2013 and August 2017. The primary endpoint is to determine the frequency of clinically actionable mutations in HCC. Secondary endpoint is to identify number of patients eligible for current FDA approved targeted agents. Results: Of the 299 consecutive GI tumors sequenced, 29 cases were identified as HCC. Clinically actionable mutations were noted in 22 of 29 patients (pts) (76%). Most pts (52%) were found to harbor more than one potentially actionable genetic alterations (n = 15). The common pathways involved: P53 in 9 pts (22%), cell-cycle regulation in 7 pts (17.1%) and mitogen-activated protein kinase in 6 pts (14.6%). Other pathways involved were DNA repair in 4 pts (9.8%), WNT in 3 pts (7.3%), MYC in 3 pts (7.3%), NOTCH in 2 pts (4.9%), HNPCC in 2 pts (4.9%), APC in 2 pts (4.9%), phosphatidylinositol 3-kinase-AKT-mTOR in 1 patient (pt) (2.4%), BRINP in 1 pt (2.4%) and angiogenesis in 1 pt (2.4%). We noted 10 pts (34.5%) harbor alterations that could potentially be targeted with FDA approved treatments such as palbociclib (for CCND1/2 amplification), PARP inhibitors (for DNA repair defects), and immunotherapy (for MMR defects) on precision medicine clinical trials such as TAPUR or MATCH. Conclusions: Mutational profiling using a targeted NGS panel identified clinically actionable alterations in nearly 75% of advanced HCC patients. Almost one third of these patients were potential candidates for current FDA approved treatments. NGS and enrollment in clinical trials should be considered in all fit patients with HCC who had progression on current standard of care treatments.
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Thota R, Lewis MA, Nadauld L, Haslem DS, Rhodes TD, Christensen B, Fulde G, Abraham T, Romero R, Moulton B, Raghunath S, Barker T. Cell cycle checkpoint defects in gastrointestinal malignancies. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.4_suppl.680] [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: 11/20/2022] Open
Abstract
680 Background: Cyclin Dependent Kinases (CDKs) play a significant role in cell cycle regulation. Aberrations involving the cell cycle pathway genes can lead to uncontrolled cell proliferation and genomic instability. These could potentially be targeted with CDK4/6 inhibitors. The frequency and type of these alterations in GI tumors is largely unknown. Methods: We analyzed the frequency of abnormalities in cell cycle genes in patients with diverse GI malignancies (colorectal, liver, pancreas, gastroesophageal, anal, appendix) that underwent next generation sequencing from January 2013 to August 2017. Results: Aberrations in the cell cycle pathway were identified in 33 of 299 (11%) of cancers. The frequency of aberrations was as follows: CDKN2A/B in 10 (30.3%), CCND1 in 7 patients (pts) (21.2%), CCND2 in 2 pts (6%), CEBPA in 2 pts (6%), CDK6 in 2 pts (6%), CDK8 in 2 pts (6%) and CDK2 in 1 (3%). Alteration involving multiple genes of cell cycle noted in 7 patients (21.2%) with combination of CCND1 and CDKN2A being most common combination. The cell cycle checkpoint defects were most frequently seen in 9 pts with colon (27%), 8 pts with hepatobiliary (27%), 8 pts with pancreatic (24%), 7 pts with esophageal (21%), and less commonly in small bowel (6%) and GIST (6%). Conclusions: The alterations in the cell cycle pathway are most common in certain GI tumors mainly colon, pancreatic, hepatobiliary and esophageal tumors. Future clinical trials exploring the potential role of targeted agents such as CDK4/6 inhibitors alone or in combination with other targeted agents such as MEK inhibitors requires further exploration in these tumors.
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Barker T, Schaeffer DG, Shearer M, Gray JMNT. Well-posed continuum equations for granular flow with compressibility and μ( I)-rheology. Proc Math Phys Eng Sci 2017; 473:20160846. [PMID: 28588402 PMCID: PMC5454347 DOI: 10.1098/rspa.2016.0846] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [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: 11/16/2016] [Accepted: 04/04/2017] [Indexed: 11/12/2022] Open
Abstract
Continuum modelling of granular flow has been plagued with the issue of ill-posed dynamic equations for a long time. Equations for incompressible, two-dimensional flow based on the Coulomb friction law are ill-posed regardless of the deformation, whereas the rate-dependent μ(I)-rheology is ill-posed when the non-dimensional inertial number I is too high or too low. Here, incorporating ideas from critical-state soil mechanics, we derive conditions for well-posedness of partial differential equations that combine compressibility with I-dependent rheology. When the I-dependence comes from a specific friction coefficient μ(I), our results show that, with compressibility, the equations are well-posed for all deformation rates provided that μ(I) satisfies certain minimal, physically natural, inequalities.
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Affiliation(s)
- T Barker
- School of Mathematics and Manchester Centre for Nonlinear Dynamics, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - D G Schaeffer
- Mathematics Department, Duke University, Box 90320, Durham, NC 27708-0320, USA
| | - M Shearer
- Department of Mathematics, North Carolina State University, Raleigh, NC 27695-8205, USA
| | - J M N T Gray
- School of Mathematics and Manchester Centre for Nonlinear Dynamics, University of Manchester, Oxford Road, Manchester M13 9PL, UK
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Broadley G, Jones N, Barker T, Fairhead J. Challenges facing timely intervention for carotid disease in modern vascular networks. Int J Surg 2016. [DOI: 10.1016/j.ijsu.2016.08.489] [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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Barker T, Henriksen VT, Rogers VE, Momberger NG, Rasmussen GL, Trawick RH. Circulating interleukin-6 is not altered while γ-tocopherol is increased in subjects scheduled for knee surgery with low vitamin D. Cytokine 2016; 88:108-114. [PMID: 27591823 DOI: 10.1016/j.cyto.2016.08.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 06/08/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
Abstract
The purpose of this study was to identify if circulating interleukin (IL)-6 and γ-tocopherol (γT) fluctuate with vitamin D status in subjects with an underlying knee joint injury or disease. We hypothesized that low vitamin D associates with an increase in plasma γT while serum IL-6 remains unchanged in subjects with an underlying knee joint trauma or disease. Fifty-four subjects scheduled to undergo primary, unilateral anterior cruciate ligament reconstructive surgery (ACL; n=27) or total knee arthroplasty (TKA; n=27) were studied. Circulating γT, α-tocopherol (αT), lipids (cholesterol and triglycerides), IL-6, and 25-hydroxyvitamin D (25(OH)D) were measured in fasting blood samples obtained prior to surgery. Subjects were classified as vitamin D deficient, insufficient, or sufficient if they had a serum 25(OH)D concentration <50, 50-75, or >75nM, respectively. The majority (57%) of the subjects possessed a serum 25(OH)D less than 50nM. Circulating cholesterol, triglycerides, and IL-6 were not significantly (all p>0.05) different between vitamin D status groups. However, lipid corrected αT was significantly (p<0.05) decreased and both lipid- and non-lipid-corrected plasma γT concentrations were significantly (both p<0.05) increased with low serum 25(OH)D (i.e., <50nM). A significant (p<0.05) multi-variate analysis revealed that an increase in plasma γT per lipids was significantly (p<0.05) predicted by a decrease in serum 25(OH)D but not by a decrease in plasma αT per lipids. We conclude that low vitamin D associates with an increase in plasma γT but not IL-6 in subjects with an underlying joint injury or disease.
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Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA.
| | | | | | - Nathan G Momberger
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
| | - G Lynn Rasmussen
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
| | - Roy H Trawick
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
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Shannon O, Barlow M, Duckworth L, Woods DR, Barker T, Grindrod A, Griffiths A, O'Hara JP. The Reliability of a Pre-Loaded Treadmill Time-Trial in Moderate Normobaric Hypoxia. Int J Sports Med 2016; 37:825-30. [PMID: 27337430 DOI: 10.1055/s-0042-108651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The purpose of this study was to assess the reliability of a pre-loaded 1 500-m treadmill time trial, conducted in moderate normobaric hypoxia. 8 trained runners/triathletes (24±3 years, 73.2±8.1 kg, 182.5±6.5 cm, altitude specific V˙O2max: 52.9±5.5 ml·kg(-1)·min(-1)) completed 3 trials (the first as a familiarisation), involving 2, 15-min running bouts at 45% and 65% V˙O2max, respectively, and a 1 500-m time trial in moderate normobaric hypoxia equivalent to a simulated altitude of 2 500 m (FiO2~15%). Heart rate, arterial oxygen saturation, skeletal muscle and cerebral tissue oxygenation (StO2), expired gas ( V˙O2 and V˙CO2), and ratings of perceived exertion were monitored. Running performance (Trial 1: 352.7±40; Trial 2: 353.9±38.2 s) demonstrated a low CV (0.9%) and high ICC (1). All physiological variables demonstrated a global CV≤4.2%, and ICC≥0.87, with the exception of muscle (CV 10.4%; ICC 0.70) and cerebral (CV 4.1%; ICC 0.82) StO2. These data demonstrate good reliability of the majority of physiological variables and indicate that a pre-loaded 1 500-m time trial conducted in moderate normobaric hypoxia is a highly reliable test of performance.
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Affiliation(s)
- O Shannon
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
| | - M Barlow
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
| | - L Duckworth
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
| | - D R Woods
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
| | - T Barker
- Department of Vascular Surgery, Royal Stoke University Hospital, Newcastle Road, Stoke on Trent, United Kingdom of Great Britain and Northern Ireland
| | - A Grindrod
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
| | - A Griffiths
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
| | - J P O'Hara
- Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Carnegie Faculty, Headingley Campus, Headingley, Leeds, United Kingdom of Great Britain and Northern Ireland
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May HT, Galenko O, Carlquist J, Weaver LK, Knight S, Barker T, Muhlestein J. WHICH VITAMIN D METABOLITE BEST PREDICTS FUTURE ADVERSE CARDIOVASCULAR EVENTS? RESULTS FROM THE INTERMOUNTAIN HEART COLLABORATIVE STUDY. J Am Coll Cardiol 2016. [DOI: 10.1016/s0735-1097(16)31926-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sharrock AE, Barker T, Yuen HM, Rickard R, Tai N. Management and closure of the open abdomen after damage control laparotomy for trauma. A systematic review and meta-analysis. Injury 2016; 47:296-306. [PMID: 26462958 DOI: 10.1016/j.injury.2015.09.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/11/2015] [Accepted: 09/12/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Damage control laparotomy for trauma (DCL) entails immediate control of haemorrhage and contamination, temporary abdominal closure (TAC), a period of physiological stabilisation, then definitive repair of injuries. Although immediate primary fascial closure is desired, fascial retraction and visceral oedema may dictate an alternate approach. Our objectives were to systematically identify and compare methods for restoration of fascial continuity when primary closure is not possible following DCL for trauma, to simplify these into a standardised map, and describe the ideal measures of process and outcome for future studies. METHODS Cochrane, OVID (Medline, AMED, Embase, HMIC) and PubMed databases were accessed using terms: (traum*, damage control, abbreviated laparotomy, component separation, fascial traction, mesh closure, planned ventral hernia (PVH), and topical negative pressure (TNP)). Randomised Controlled Trials, Case Series and Cohort Studies reporting TAC and early definitive closure methods in trauma patients undergoing DCL were included. Outcomes were mortality, days to fascial closure, hospital length of stay, abdominal complications and delayed ventral herniation. RESULTS 26 studies described and compared early definitive closure methods; delayed primary closure (DPC), component separation (CS) and mesh repair (MR), among patients with an open abdomen after DCL for trauma. A three phase map was developed to describe the temporal and sequential attributes of each technique. Significant heterogeneity in nomenclature, terminology, and reporting of outcomes was identified. Estimates for abdominal complications in DPC, MR and CS groups were 17%, 41% and 17% respectively, while estimates for mortality in DPC and MR groups were 6% and 0.5% (data heterogeneity and requirement of fixed and random effects models prevented significance assessment). Estimates for abdominal closure in the MR and DPC groups differed; 6.30 (95% CI=5.10-7.51), and 15.90 (95% CI=9.22-22.58) days respectively. Reporting poverty prevented subgroup estimate generation for ventral hernia and hospital length of stay. CONCLUSION Component separation or mesh repair may be valid alternatives to delayed primary closure following a trauma DCL. Comparisons were hampered by the lack of uniform reporting and bias. We propose a new system of standardised nomenclature and reporting for further investigation and management of the post-DCL open abdomen.
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Affiliation(s)
- A E Sharrock
- Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK.
| | - T Barker
- Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK
| | - H M Yuen
- Department of Primary Care and Population Sciences, South Academic Block, Southampton General Hospital, Tremona Road, Southampton, Hampshire, SO16 6YD
| | - R Rickard
- Department of Primary Care and Population Sciences, South Academic Block, Southampton General Hospital, Tremona Road, Southampton, Hampshire, SO16 6YD
| | - N Tai
- Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK
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Sharrock A, Barker T, Kershaw E, Watts C. Keeping an Eye on the Target: Direct or Indirect Revascularisation of the Angiosome? Eur J Vasc Endovasc Surg 2015. [DOI: 10.1016/j.ejvs.2015.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Barker T, Henriksen VT, Rogers VE, Trawick RH. Serum cytokines and muscle strength after anterior cruciate ligament surgery are not modulated by high-doses of vitamins E (α- and γ-tocopherol's) and C. Cytokine 2015; 74:279-86. [PMID: 25890874 DOI: 10.1016/j.cyto.2015.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 11/25/2014] [Revised: 01/27/2015] [Accepted: 03/16/2015] [Indexed: 11/18/2022]
Abstract
The purpose of this investigation was to identify if supplemental vitamin E (consisting of α- and γ-tocopherol's) and C modulate serum cytokine and muscle strength following an ACL injury and surgery. Subjects were randomly assigned to one of two groups: (1) placebo (n=14) or (2) vitamins E (α-[600m g RRR-α-tocopherol, αT] and γ-[600 mg of RRR-γT]) and C (1000 mg ascorbic acid, AA) (EC; n=15). Supplements were taken daily starting ∼2-wk prior to and concluding 16-wk after surgery. Fasting blood samples were obtained and single-leg peak isometric force measurements were performed at baseline (prior to supplementation), before surgery (∼120-min - blood draw only), and 8-wk, 12-wk, and 16-wk after surgery. αT, γT, AA, and cytokines were measured in each blood sample, and peak isometric force was measured on the injured and non-injured legs separately at each testing session. An exercise protocol consisting of repetitive knee and hip extension and flexion contractions to exhaustion was performed on the injured limb at 16-wk. Vitamin E and C supplementation significantly (all p<0.05) increased plasma αT (∼40%), γT (∼160%), and AA (∼50%) concentrations. Serum cytokine concentrations, peak isometric force, and time to exhaustion during the exercise protocol were not significantly different between groups. Based on these findings, we conclude that vitamin E and C supplementation increases their endogenous levels without minimizing muscular weakness or modulating serum cytokine concentrations after ACL surgery.
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Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA.
| | | | | | - Roy H Trawick
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Murray, UT 84107 USA
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Barker T, Henriksen V, Rogers V, Trawick R. A Decrease in γ‐Tocopherol Associates with Impaired Muscular Performance After Anterior Cruciate Ligament Surgery. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.920.1] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty Hospital Intermountain HealthcareMurrayUtahUnited States
| | - Vanessa Henriksen
- The Orthopedic Specialty Hospital Intermountain HealthcareMurrayUtahUnited States
| | - Victoria Rogers
- The Orthopedic Specialty Hospital Intermountain HealthcareMurrayUtahUnited States
| | - Roy Trawick
- The Orthopedic Specialty Hospital Intermountain HealthcareMurrayUtahUnited States
- The Orthopedic Specialty Clinic Intermountain HealthcareMurrayUtahUnited States
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Barker T, Henriksen VT, Rogers VE, Trawick RH. Improvement in muscle strength after an anterior cruciate ligament injury corresponds with a decrease in serum cytokines. Cytokine 2015; 73:199-202. [PMID: 25748529 DOI: 10.1016/j.cyto.2015.01.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/15/2014] [Accepted: 01/30/2015] [Indexed: 11/30/2022]
Abstract
The purpose of this communication was to identify if a decrease in serum cytokine concentrations associates with an improvement in muscle strength after an anterior cruciate ligament (ACL) injury. To establish groups with contrasting serum cytokine concentrations, subjects scheduled for ACL reconstructive surgery were separated into one of two groups (gender matched) based on their time from injury occurrence: (1) Early (<21-d from injury occurrence; n=22) or (2) Late (⩾21-d from injury occurrence; n=22). Before surgery, each subject provided a fasting blood sample and performed single-leg peak isometric force testing on the injured (INJ) and non-injured (NI) limbs. Compared to the NI limb, peak isometric force in the INJ limb was decreased (p<0.05) in both groups (Early, ∼35%; Late, ∼18%). The deficit in peak isometric force, however, was increased (p<0.05) in the Early compared to Late group. Similarly, serum granulocyte macrophage colony-stimulating factor (GM-CSF), interleukin (IL)-6, and IL-13 were increased (all p<0.05) in the Early group. These unique findings show a concurrent increase in muscular weakness and serum cytokine concentrations shortly after (<21-d) an ACL injury. Importantly, muscular weakness persisted thereafter (⩾21-d) but at an attenuated level and parallel to a decrease in circulating cytokine concentrations. We conclude that a decrease in serum cytokines associates with a reduction in muscular weakness after an ACL injury.
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Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA.
| | | | | | - Roy H Trawick
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
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Christensen JC, Goldfine LR, Barker T, Collingridge DS. What can the first 2 months tell us about outcomes after anterior cruciate ligament reconstruction? J Athl Train 2015; 50:508-15. [PMID: 25594914 DOI: 10.4085/1062-6050-49.3.95] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 02/01/2023]
Abstract
CONTEXT Substantial research has been conducted on anterior cruciate ligament reconstruction (ACLR) to evaluate patient outcomes. However, little attention has been given to outcomes during the early phase of recovery and how early deficits affect both short- and long-term outcomes. OBJECTIVE To identify relationships between demographic (age, sex, and body mass index [BMI]) and intraoperative (isolated ACLR versus primary ACLR + secondary procedures), and postoperative (range-of-motion [ROM] and peak isometric knee-extension force [PIF]) variables during the first 2 months after ACLR using self-reported outcomes. DESIGN Cohort study. SETTING Outpatient orthopaedic hospital. PATIENTS OR OTHER PARTICIPANTS A total of 63 patients (38 men, 25 women; age = 33.0 ± 12.1 years; BMI = 26.3 ± 6.5 kg/m(2)) who underwent ACLR. MAIN OUTCOME MEASURE(S) Demographic, intraoperative, and postoperative variables were collected at 1 and 2 months after ACLR and were compared with International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form scores at 1, 2, and ≥12 months. RESULTS Significant relationships were identified between ≥12-month IKDC scores and the 1-month (Pearson correlation, r = 0.283, r(2) = 0.08; P = .025) and 2-month (r = 0.301, r(2) = 0.09; P = .017) IKDC scores. After controlling for other variables, we found that the PIF ratio measures at 1 and 2 months were positively associated with 1- and 2-month IKDC scores (P < .001) and BMI was negatively associated with both 1- and 2-month IKDC scores (P < .05). One-month IKDC scores were related to the 1-month difference in knee-flexion ROM (P = .04). CONCLUSIONS The IKDC scores during the first 2 months were positively correlated with patients' perceptions of function on long-term IKDC scores. It also appears that improvements in lower extremity strength and flexion ROM deficits were positively associated with short-term IKDC scores. Higher BMI was negatively associated with patients' perceptions of function on short-term IKDC scores.
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Kommuru D, Barker T, Desai S, Burke J, Ramsay A, Mueller-Harvey I, Miller J, Mosjidis J, Kamisetti N, Terrill T. Use of pelleted sericea lespedeza (Lespedeza cuneata) for natural control of coccidia and gastrointestinal nematodes in weaned goats. Vet Parasitol 2014; 204:191-8. [DOI: 10.1016/j.vetpar.2014.04.017] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 03/05/2014] [Accepted: 04/16/2014] [Indexed: 11/30/2022]
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Levy MA, McKinnon T, Barker T, Dern A, Helland T, Robertson J, Cuomo J, Wood T, Dixon BM. Predictors of vitamin D status in subjects that consume a vitamin D supplement. Eur J Clin Nutr 2014; 69:84-9. [DOI: 10.1038/ejcn.2014.133] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 04/24/2014] [Accepted: 05/24/2014] [Indexed: 11/09/2022]
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Barker T, Schneider E, Dixon B, Henriksen V, Weaver L. Supplemental vitamin D enhances strength recovery after damaging exercise (634.2). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.634.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty HospitalMurrayUTUnited States
| | - Erik Schneider
- USANA Health Sciences, Inc.Salt Lake CityUTUnited States
| | - Brian Dixon
- USANA Health Sciences, Inc.Salt Lake CityUTUnited States
| | | | - Lindell Weaver
- Hyperbaric MedicineIntermountain Medical Center and LDS HospitalMurrayUTUnited States
- School of Medicine University of UtahSalt Lake CityUTUnited States
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Barker T, Henriksen V, Rogers V, Aguirre D, Trawick R, Rasmussen G, Momberger N. Vitamin D deficiency impairs quadriceps strength without modulating inflammatory cytokines in patients with knee osteoarthritis (1041.2). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.1041.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty HospitalMurrayUTUnited States
| | - Vanessa Henriksen
- The Orthopedic Specialty ClinicMurrayUTUnited States
- The Orthopedic Specialty HospitalMurrayUTUnited States
| | | | - Dale Aguirre
- The Orthopedic Specialty HospitalMurrayUTUnited States
| | - Roy Trawick
- The Orthopedic Specialty ClinicMurrayUTUnited States
- The Orthopedic Specialty HospitalMurrayUTUnited States
| | - G. Rasmussen
- The Orthopedic Specialty ClinicMurrayUTUnited States
- The Orthopedic Specialty HospitalMurrayUTUnited States
| | - Nathan Momberger
- The Orthopedic Specialty ClinicMurrayUTUnited States
- The Orthopedic Specialty HospitalMurrayUTUnited States
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Barker T, Henriksen VT, Rogers VE, Aguirre D, Trawick RH, Lynn Rasmussen G, Momberger NG. Vitamin D deficiency associates with γ-tocopherol and quadriceps weakness but not inflammatory cytokines in subjects with knee osteoarthritis. Redox Biol 2014; 2:466-74. [PMID: 24624336 PMCID: PMC3949095 DOI: 10.1016/j.redox.2014.01.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 01/31/2014] [Accepted: 01/31/2014] [Indexed: 12/16/2022] Open
Abstract
Knee osteoarthritis (OA) is a degenerative joint condition and a leading cause of physical disability in the United States. Quadriceps weakness and inflammatory cytokines contribute to the pathogenesis of knee OA, and both of which, increase with vitamin D deficiency. Other micronutrients, such as vitamins C and E and β-carotene, modulate inflammatory cytokines and decrease during inflammation. The purpose of this study was to test the hypothesis that vitamin D deficiency associates with quadriceps weakness, an increase in serum cytokines, and a decrease in circulating micronutrients in subjects with knee OA. Subjects (age, 48±1 y; serum 25(OH)D, 25.8±1.1 ng/mL) with knee OA were categorized as vitamin D deficient (n=17; serum 25(OH)D≤20 ng/mL), insufficient (n=21; serum 25(OH)D 20–29 ng/mL), or sufficient (n=18; serum 25(OH)D≥30 ng/mL). Single-leg strength (concentric knee extension–flexion contraction cycles at 60 °/s) and blood cytokine, carotene (α and β), ascorbic acid, and tocopherol (α and γ) concentrations were measured. Quadriceps peak torque, average power, total work, and deceleration were significantly (all p<0.05) impaired with vitamin D deficiency. Serum γ-tocopherol concentrations were significantly (p<0.05) increased with vitamin D deficiency. In the vitamin D sufficient group, γ-tocopherol inversely correlated (r=−0.47, p<0.05) with TNF-α, suggesting a pro-inflammatory increase with a γ-tocopherol decrease despite a sufficient serum 25(OH)D concentration. We conclude that vitamin D deficiency is detrimental to quadriceps function, and in subjects with vitamin D sufficiency, γ-tocopherol could have an important anti-inflammatory role in a pathophysiological condition mediated by inflammation. We investigated the vitamin D association with mediators of knee osteoarthritis. Vitamin D deficiency associated with quadriceps dysfunction. Vitamin D deficiency was not associated with serum cytokines. Vitamin D deficiency associated with increased plasma γ-tocopherol concentrations. γ-Tocopherol inversely correlated with TNF-α in vitamin D sufficient subjects.
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Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA
| | - Vanessa T Henriksen
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA ; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
| | - Victoria E Rogers
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA
| | - Dale Aguirre
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA
| | - Roy H Trawick
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA ; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
| | - G Lynn Rasmussen
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA ; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
| | - Nathan G Momberger
- The Orthopedic Specialty Hospital, 5848 S., Fashion Blvd., Murray, UT 84107, USA ; The Orthopedic Specialty Clinic, Murray, UT 84107, USA
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Barker T, Martins TB, Hill HR, Kjeldsberg CR, Dixon BM, Schneider ED, Henriksen VT, Weaver LK. Vitamin D sufficiency associates with an increase in anti-inflammatory cytokines after intense exercise in humans. Cytokine 2014; 65:134-7. [DOI: 10.1016/j.cyto.2013.12.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 11/07/2013] [Accepted: 12/09/2013] [Indexed: 02/06/2023]
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Barker T, Schneider ED, Dixon BM, Henriksen VT, Weaver LK. Supplemental vitamin D enhances the recovery in peak isometric force shortly after intense exercise. Nutr Metab (Lond) 2013; 10:69. [PMID: 24313936 PMCID: PMC4029611 DOI: 10.1186/1743-7075-10-69] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 12/02/2013] [Indexed: 11/18/2022] Open
Abstract
Background Serum 25-hydroxyvitamin D (25(OH)D) concentrations associate with skeletal muscle weakness (i.e., deficit in skeletal muscle strength) after muscular injury or damage. Although supplemental vitamin D increases serum 25(OH)D concentrations, it is unknown if supplemental vitamin D enhances strength recovery after a damaging event. Methods Reportedly healthy and modestly active (30 minute of continuous physical activity at least 3 time/week) adult males were randomly assigned to a placebo (n = 13, age, 31(5) y; BMI, 26.9(4.2) kg/m2; serum 25(OH)D, 31.0(8.2) ng/mL) or vitamin D (cholecalciferol, 4000 IU; n = 15; age, 30(6) y; BMI, 27.6(6.0) kg/m2; serum 25(OH)D, 30.5(9.4) ng/mL) supplement. Supplements were taken daily for 35-d. After 28-d of supplementation, one randomly selected leg performed an exercise protocol (10 sets of 10 repetitive eccentric-concentric jumps on a custom horizontal plyo-press at 75% of body mass with a 20 second rest between sets) intended to induce muscle damage. During the exercise protocol, subjects were allowed to perform presses if they were unable to complete two successive jumps. Circulating chemistries (25(OH)D and alanine (ALT) and aspartate (AST) aminotransferases), single-leg peak isometric force, and muscle soreness were measured before supplementation. Circulating chemistries, single-leg peak isometric force, and muscle soreness were also measured before (immediately) and after (immediately, 1-h [blood draw only], 24-h, 48-h, 72-h, and 168-h) the damaging event. Results Supplemental vitamin D increased serum 25(OH)D concentrations (P < 0.05; ≈70%) and enhanced the recovery in peak isometric force after the damaging event (P < 0.05; ≈8% at 24-h). Supplemental vitamin D attenuated (P < 0.05) the immediate and delayed (48-h, 72-h, or 168-h) increase in circulating biomarkers representative of muscle damage (ALT or AST) without ameliorating muscle soreness (P > 0.05). Conclusions We conclude that supplemental vitamin D may serve as an attractive complementary approach to enhance the recovery of skeletal muscle strength following intense exercise in reportedly active adults with a sufficient vitamin D status prior to supplementation.
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Affiliation(s)
- Tyler Barker
- The Orthopedic Specialty Hospital, 5848 S, Fashion Blvd,, Murray, UT 84107, USA.
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Mah E, Pei R, Guo Y, Ballard KD, Barker T, Rogers VE, Parker BA, Taylor AW, Traber MG, Volek JS, Bruno RS. γ-Tocopherol-rich supplementation additively improves vascular endothelial function during smoking cessation. Free Radic Biol Med 2013; 65:1291-1299. [PMID: 24075893 DOI: 10.1016/j.freeradbiomed.2013.09.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 09/15/2013] [Accepted: 09/19/2013] [Indexed: 01/03/2023]
Abstract
Oxidative stress and inflammation persist years after smoking cessation thereby limiting the restoration of vascular endothelial function (VEF). Although short-term smoking cessation improves VEF, no studies have examined co-therapy of antioxidants in combination with smoking cessation to improve VEF. We hypothesized that improvements in γ-tocopherol (γ-T) status during smoking cessation would improve VEF beyond that from smoking cessation alone by decreasing oxidative stress and proinflammatory responses. A randomized, double-blind, placebo-controlled study was conducted in otherwise healthy smokers (22 ± 1 years; mean ± SEM) who quit smoking for 7 days with placebo (n=14) or γ-T-rich supplementation (n=16; 500 mg γ-T/day). Brachial artery flow-mediated dilation (FMD), cotinine, and biomarkers of antioxidant status, oxidative stress, and inflammation were measured before and after 7 days of smoking cessation. Smoking cessation regardless of supplementation similarly decreased plasma cotinine, whereas γ-T-rich supplementation increased plasma γ-T by seven times and its urinary metabolite γ-carboxyethyl hydroxychroman by nine times (P<0.05). Smoking cessation with γ-T-rich supplementation increased FMD responses by 1.3% (P<0.05) beyond smoking cessation alone (4.1 ± 0.6% vs 2.8 ± 0.3%; mean ± SEM). Although plasma malondialdehyde decreased similarly in both groups (P<0.05), plasma oxidized LDL and urinary F2-isoprostanes were unaffected by smoking cessation or γ-T-rich supplementation. Plasma TNF-α and myeloperoxidase decreased (P<0.05) only in those receiving γ-T-rich supplements and these were inversely related to FMD (P<0.05; R=-0.46 and -0.37, respectively). These findings demonstrate that short-term γ-T-rich supplementation in combination with smoking cessation improved VEF beyond that from smoking cessation alone in young smokers, probably by decreasing the proinflammatory mediators TNF-α and myeloperoxidase.
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Affiliation(s)
- Eunice Mah
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Ruisong Pei
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Yi Guo
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Kevin D Ballard
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Tyler Barker
- The Orthopedic Specialty Hospital, Murray, UT 84107, USA
| | | | - Beth A Parker
- Department of Cardiology, Henry Low Heart Center, Hartford Hospital, Hartford, CT 06102, USA
| | - Alan W Taylor
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Maret G Traber
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Jeff S Volek
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA
| | - Richard S Bruno
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA.
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Barker T, Branagan G, Wright E, Crick A, McGuiness C, Chave H. Vertical rectus abdominis myocutaneous flap reconstruction of the perineal defect after abdominoperineal excision is associated with low morbidity. Colorectal Dis 2013; 15:1177-83. [PMID: 23672636 DOI: 10.1111/codi.12286] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/29/2013] [Indexed: 01/07/2023]
Abstract
AIM To examine the short-term outcomes of perineal reconstruction with a vertical rectus abdominis myocutaneous (VRAM) flap following abdominoperineal excision (APE). METHOD Retrospective case note review of all patients undergoing APE and primary VRAM reconstruction between July 2001 and February 2012 in a district general hospital tertiary referral centre for APE. Complications were categorized using the Clavien-Dindo classification, which grades complications from I to V in order of increasing severity. RESULTS Fifty-five consecutive patients (31 men, median age 65, range 38-84 years) underwent APE with VRAM flap reconstruction, 15 for anal cancer and 40 for rectal cancer. Median length of stay was 11 days but was significantly shorter in the laparoscopic group compared with the open group (8 vs 12 days; P < 0.01) and in patients who did not experience any complications (P < 0.05). Four patients (7%) had major complications (Grade 3 and above) directly related to the flap or donor site. CONCLUSION VRAM reconstruction of the perineum can be safely performed following APE with results that compare favourably with other techniques. Most flap complications are minor, although these are still associated with an increase in the length of hospital stay.
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Affiliation(s)
- T Barker
- Department of Colorectal Surgery, Salisbury District Hospital, Salisbury, UK
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Parke E, Hart J, Baldock D, Barchard K, Etcoff L, Allen D, Stolberg P, Nardi N, Cohen J, Jones W, Loe S, Etcoff L, Delgaty L, Tan A, Bunner M, Delgaty L, Tan A, Bunner M, Tan A, Delgaty L, Bunner M, Tan A, Delgaty L, Bunner M, Goodman G, Kim W, Nolty A, Marion S, Davis A, Finch W, Piehl J, Moss L, Nogin R, Dean R, Davis J, Lindstrom W, Poon M, Fonseca F, Bure-Reyes A, Stewart J, Golden C, Fonseca F, Bure-Reyes A, Stewart J, Golden C, Fields K, Hill B, Corley E, Russ K, Boettcher A, Musso M, Rohling M, Rowden A, Downing K, Benners M, Miller D, Maricle D, Dugbartey T, Anum A, Anderson J, Daniel M, Hoskins L, Gillis K, Khen S, Carter K, Ayers C, Neeland I, Cullum M, Weiner M, Rossetti H, Buddin W, Mahal S, Schroeder R, Baade L, Macaluso M, Phelps K, Evans C, Clark J, Vickery C, Chow J, Stokic D, Phelps K, Evans C, Watson S, Odom R, Clark J, Clark J, Odom R, Evans C, Vickery C, Thompson J, Noggle C, Kane C, Kecala N, Lane E, Raymond M, Woods S, Iudicello J, Dawson M, Ghias A, Choe M, Yudovin S, McArthur D, Asarnow R, Giza C, Babikian T, Tun S, O'Neil M, Ensley M, Storzbach D, Ellis R, O'Neil M, Carlson K, Storzbach D, Brenner L, Freeman M, Quinones A, Motu'apuaka M, Ensley M, Kansagara D, Brickell T, Grant I, Lange R, Kennedy J, Ivins B, Marshall K, Prokhorenko O, French L, Brickell T, Lange R, Bhagwat A, French L, Weber E, Nemeth D, Songy C, Gremillion A, Lange R, Brubacher J, Shewchuk J, Heran M, Jarrett M, Rauscher A, Iverson G, Woods S, Ukueberuwa D, Medaglia J, Hillary F, Meyer J, Vargas G, Rabinowitz A, Barwick F, Arnett P, Levan A, Gale S, Atkinson J, Boettcher A, Hill B, Rohling M, Stolberg P, Hart J, Allen D, Mayfield J, Ellis M, Marion SD, Houshyarnejad A, Grant I, Akarakian R, Kernan C, Babikian T, Asarnow R, Bens M, Fisher M, Garrett C, Vinogradov S, Walker K, Torstrick A, Uderman J, Wellington R, Zhao L, Fromm N, Dahdah M, Salisbury D, Monden K, Lande E, Wanlass R, Fong G, Smith K, Miele A, Novakovic-Agopian T, Chen A, Rome S, Rossi A, Abrams G, Murphy M, Binder D, Muir J, Carlin G, Loya F, Rabinovitz B, Bruhns M, Adler M, Schleicher-Dilks S, Messerly J, Babika C, Ukpabi C, Golden C, Schleicher-Dilks S, Coad S, Messerly J, Schaffer S, Babika C, Golden C, Cowad S, Paisley S, Fontanetta R, Messerly J, Golden C, Holder C, Kloezeman K, Henry B, Burns W, Patt V, Minassian A, Perry W, Cooper L, Allen D, Vogel S, Woolery H, Ciobanu C, Simone A, Bedard A, Olivier T, O'Neill S, Rajendran K, Halperin J, Rudd-Barnard A, Steenari M, Murry J, Le M, Becker T, Mucci G, Zupanc M, Shapiro E, Santos O, Cadavid N, Giese E, Londono N, Osmon D, Zamzow J, Culnan E, D'Argenio D, Mosti C, Spiers M, Schleicher-Dilks S, Kloss J, Curiel A, Miller K, Olmstead R, Gottuso A, Saucier C, Miller J, Dye R, Small G, Kent A, Andrews P, Puente N, Terry D, Faraco C, Brown C, Patel A, Siegel J, Miller L, Lee B, Joan M, Thaler N, Fontanetta R, Carla F, Allen D, Nguyen T, Glass L, Coles C, Julie K, May P, Sowell E, Jones K, Riley E, Demsky Y, Mattson S, Allart A, Freer B, 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Gomes W, McGinley J, Miles-Mason E, Colvin M, Carrion L, Romers C, Soper H, Zec R, Kohlrus S, Fritz S, Robbs R, Ala T, Zec R, Fritz S, Kohlrus S, Robbs R, Ala T, Edwards M, Hall J, O'Bryant S, Miller J, Dye R, Miller K, Baerresen K, Small G, Moskowitz J, Puente A, Ahmed F, Faraco C, Brown C, Evans S, Chu K, Miller L, Young-Bernier M, Tanguay A, Tremblay F, Davidson P, Duda B, Puente A, Terry D, Kent A, Patel A, Miller L, Junod A, Marion SD, Harrington M, Fonteh A, Gurnani A, John S, Gavett B, Diaz-Santos M, Mauro S, Beaute J, Cronin-Golomb A, Fazeli P, Gouaux B, Rosario D, Heaton R, Moore D, Puente A, Lindbergh C, Chu K, Evans S, Terry D, Duda B, Mackillop J, Miller S, Greco S, Klimik L, Cohen J, Robbins J, Lashley L, Schleicher-Dilks S, Golden C, Kunkes I, Culotta V, Kunkes I, Griffits K, Loughan A, Perna R, Hertza J, Cohen M, Northington S, Tyson K, Musielak K, Fine J, Kaczorowski J, Doty N, Braaten E, Shah S, Nemanim N, Singer E, Hinkin C, Levine A, Gold A, Evankovich K, Lotze T, 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G, Zink D, Barney S, Gilbert G, Allen D, Martin P, Schroeder R, Klas P, Jeffay E, Zakzanis K, Iverson G, Lanting S, Saffer B, Koehle M, Palmer B, Barrio C, Vergara R, Muniz M, Pinto L, Jeste D, Stenclik J, Lynch J, McCaffrey R, Shultz LS, Pedersen H, Roper B, Crouse E, Crucian G, Dezhkam N, Mulligan K, Singer R, Psihogios A, Davis A, Stephens B, Love C, Mulligan K, Webbe F, West S, McCue R, Goldin Y, Cicerone K, Ruchinskas R, Seidl JT, Massman P, Tam J, Schmitter-Edgecombe M, Baerresen K, Hanson E, Miller K, Miller J, Yeh D, Kim J, Ercoli L, Siddarth P, Small G, Noback M, Noback M, Baldock D, Mahmoud S, Munic-Miller D, Bonner-Jackson A, Banks S, Rabin L, Emerson J, Smith C, Roberts R, Hass S, Duhig A, Pankratz V, Petersen R, Leibson C, Harley A, Melville T, Phoong M, Gill S, Nunan-Saah J, La D, Gomez R, Lindbergh C, Puente A, Gray J, Chu K, Evans S, Sweet L, MacKillop J, Miller L, McAlister C, Schmitter-Edgecombe M, Baldassarre M, Kamm J, Wolff D, Dombrowski C, Bullard S, Edwards M, 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Steed A, Kark S, Lafleche G, Brown T, Bogdanova Y, Strongin E, Spickler C, Drasnin D, Strongin C, Poreh A, Houshyarnejad A, Ellis M, Babikian T, Kernan C, Asarnow R, Didehbani N, Cullum M, Loneman L, Mansinghani S, Hart J, Fischer J. POSTER SESSIONS SCHEDULE. Arch Clin Neuropsychol 2013. [DOI: 10.1093/arclin/act054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Barker T, Leonard SW, Trawick RH, Walker JA, Traber MG. Antioxidant supplementation lowers circulating IGF-1 but not F2-isoprostanes immediately following anterior cruciate ligament surgery. Redox Rep 2013; 14:221-6. [DOI: 10.1179/135100009x12525712409535] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Barker T, Dixon B, Schneider E, Weaver L. Vitamin D insufficiency modulates the pro- and anti-inflammatory cytokine balance without altering regulators of circulating 25-hydroxyvitamin D (P6301). The Journal of Immunology 2013. [DOI: 10.4049/jimmunol.190.supp.184.12] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Although evident in pathophysiological conditions, it is unknown if regulators of vitamin D are disrupted, if pro-inflammatory cytokines are increased, or if anti-inflammatory cytokines are decreased with vitamin D insufficiency in young adults. The purpose of this study was, therefore, to evaluate circulating regulators of vitamin D, and circulating pro- and anti-inflammatory cytokines in young adults with low serum 25-hydroxyvitamin D (25(OH)D) concentrations. Circulating 25(OH)D, pro- and anti-inflammatory cytokines, parathyroid hormone, calcium, and albumin were measured in young (25 to 42 y), reportedly healthy adults during the winter. Subjects were separated into one of two groups: vitamin D insufficient (25(OH)D < 32 ng/mL, n = 14) or vitamin D sufficient (25(OH)D > 32 ng/mL, n = 14). Age, height, body mass, and body mass index, and circulating parathyroid hormone, calcium, and albumin concentrations were not significantly (all p > 0.05) different between groups. However, pro-inflammatory cytokines (interleukin (IL)-2, IL-1β, tumor necrosis factor-α, and interferon-γ) were significantly (all p < 0.05) greater in the vitamin D insufficient group. The anti-inflammatory cytokines, IL-5 and IL-10, were not significantly (both p > 0.05) different between groups. We conclude that regulators of vitamin D are not disrupted with vitamin D insufficiency, but insufficiency could result in pro-inflammatory stress without modulating anti-inflammatory cytokines in young adults.
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Affiliation(s)
- Tyler Barker
- 1The Orthopedic Specialty Hospital, Intermountain Healthcare, Murray, UT
| | - Brian Dixon
- 2USANA Health Sciences, Inc., Salt Lake City, UT
| | | | - Lindell Weaver
- 3LDS Hospital and Intermountain Medical Center, Salt Lake City, UT
- 4University of Utah School of Medicine, Salt Lake City, UT
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