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Bresler AM, Panthofer A, Kuramochi Y, Olson SL, Eagleton M, Schneider DB, Lyden SP, Blackwelder WC, Uhl CF, Bischoff MS, Matsumura JS, Böckler D. Image-based assessment of aortoiliac aneurysm anatomical characteristics in patients from the global iliac branch study. Langenbecks Arch Surg 2024; 409:135. [PMID: 38649506 PMCID: PMC11035386 DOI: 10.1007/s00423-024-03326-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
OBJECTIVE Endovascular repair is the preferred treatment for aortoiliac aneurysm, with preservation of at least one internal iliac artery recommended. This study aimed to assess pre-endovascular repair anatomical characteristics of aortoiliac aneurysm in patients from the Global Iliac Branch Study (GIBS, NCT05607277) to enhance selection criteria for iliac branch devices (IBD) and improve long-term outcomes. METHODS Pre-treatment CT scans of 297 GIBS patients undergoing endovascular aneurysm repair were analyzed. Measurements included total iliac artery length, common iliac artery length, tortuosity index, common iliac artery splay angle, internal iliac artery stenosis, calcification score, and diameters in the device's landing zone. Statistical tests assessed differences in anatomical measurements and IBD-mediated internal iliac artery preservation. RESULTS Left total iliac artery length was shorter than right (6.7 mm, P = .0019); right common iliac artery less tortuous (P = .0145). Males exhibited greater tortuosity in the left total iliac artery (P = .0475) and larger diameter in left internal iliac artery's landing zone (P = .0453). Preservation was more common on right (158 unilateral, 34 bilateral) than left (105 unilateral, 34 bilateral). There were 192 right-sided and 139 left-sided IBDs, with 318 IBDs in males and 13 in females. CONCLUSION This study provides comprehensive pre-treatment iliac anatomy analysis in patients undergoing endovascular repair with IBDs, highlighting differences between sides and sexes. These findings could refine patient selection for IBD placement, potentially enhancing outcomes in aortoiliac aneurysm treatment. However, the limited number of females in the study underscores the need for further research to generalize findings across genders.
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Affiliation(s)
- Alina-Marilena Bresler
- Department of Vascular and Endovascular Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany.
| | - Annalise Panthofer
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Yuki Kuramochi
- Vascular Surgery Department, Heart Vascular Thoracic Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Sydney L Olson
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Matthew Eagleton
- Department of Surgery, Division of Vascular and Endovascular Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Darren B Schneider
- Department of Surgery, Division of Vascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Sean P Lyden
- Vascular Surgery Department, Heart Vascular Thoracic Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
| | - William C Blackwelder
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Christian F Uhl
- Department of Vascular and Endovascular Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
- Department of Vascular Surgery, University Hospital RWTH Aachen, Aachen, Germany
| | - Moritz S Bischoff
- Department of Vascular and Endovascular Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - Jon S Matsumura
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Surgery, Division of Vascular Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Dittmar Böckler
- Department of Vascular and Endovascular Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
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Kim TI, Kostiuk V, Olson SL, Curci JA, Matsumura JS, Baxter BT, Blackwelder WC, Terrin ML, Guzman RJ. Effect of Doxycycline on Progression of Arterial Calcification in the Noninvasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA(3)CT). Ann Vasc Surg 2023:S0890-5096(23)00345-X. [PMID: 37356652 PMCID: PMC10748791 DOI: 10.1016/j.avsg.2023.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND Doxycycline has been shown to prevent arterial calcification via attenuation of matrix metalloproteinases (MMP) in preclinical models. We assessed the effects of doxycycline on progression of arterial calcification in patients enrolled in the Non-Invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA3CT). METHODS Two hundred and sixty-one patients were randomized to 100 mg doxycycline twice daily or placebo. Arterial calcification was measured in abdominal vessels on noncontrast computed tomography scans. Patients with baseline computed tomography scan and 1 or more follow-up scans within the 2-year study were included for analysis. For individual arteries, mean change in iliofemoral artery calcification over time was calculated via linear regression. Serum MMP-3 and MMP-9 levels were measured at baseline and 6 months. RESULTS Sixty-five patients in the doxycycline and 66 in the placebo arm were included in this analysis. Baseline characteristics between the groups were similar. The unadjusted mean change in iliofemoral calcium score per year trended toward higher values in patients treated with doxycycline compared with placebo (322 ± 399 units/year vs. 217 ± 307 units/year, P = 0.09). After 6 months, changes in serum MMP-3 and MMP-9 levels were not significantly different between study arms. CONCLUSIONS In patients with small aortic aneurysm, treatment with doxycycline 100 mg twice daily did not decrease circulating levels of the matrix degrading enzymes MMP-3 and 9 or alter the progression of arterial calcification.
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Affiliation(s)
- Tanner I Kim
- Department of Surgery, John A Burns School of Medicine, University of Hawaii, Honolulu, HI
| | - Valentyna Kostiuk
- Division of Vascular Surgery and Endovascular Therapy, Yale School of Medicine, New Haven, CT
| | - Sydney L Olson
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - John A Curci
- Department of Vascular Surgery, Vanderbilt University Medical Center, Nashville, TN
| | - Jon S Matsumura
- Division of Vascular Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Bernard T Baxter
- Division of Vascular Surgery, University of Nebraska School of Medicine, Omaha, NE
| | - William C Blackwelder
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD
| | - Michael L Terrin
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD
| | - Raul J Guzman
- Division of Vascular Surgery and Endovascular Therapy, Yale School of Medicine, New Haven, CT.
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Panthofer AM, Olson SL, Rademacher BL, Kraiss LW, Blackwelder WC, Baxter BT, MacTaggart JN, Katzen BT, Berman SS, Matsumura JS. Effect of Two Years of Doxycycline Treatment on Infrarenal Aortic Neck Diameter. EJVES Vasc Forum 2023; 59:43-48. [PMID: 37408850 PMCID: PMC10319163 DOI: 10.1016/j.ejvsvf.2023.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/06/2023] [Accepted: 05/19/2023] [Indexed: 07/07/2023] Open
Abstract
Objective Endovascular aneurysm repair (EVAR) is a widely used option for patients with suitable vascular anatomy who have a large infrarenal abdominal aortic aneurysm (AAA). Neck diameter is the primary anatomical determinant of EVAR eligibility and device durability. Doxycycline has been proposed to stabilise the proximal neck after EVAR. This study explored doxycycline mediated aortic neck stabilisation in patients with small AAA, monitored by computed tomography over two years. Methods This was a multicentre prospective randomised clinical trial. Subjects from the Non-Invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA3CT, NCT01756833) were included in this secondary a priori analysis. Female baseline AAA maximum transverse diameter was between 3.5 and 4.5 cm, and male was between 3.5 and 5.0 cm. Subjects were included if they completed pre-enrolment and two year follow up computed tomography (CT) imaging. Proximal aortic neck diameter was measured at the lowest renal artery, and 5, 10, and 15 mm caudal to this point; mean neck diameter was calculated from these values. Unpaired, two tailed parametric t test analysis with post hoc Bonferroni correction was used to detect differences between neck diameters in subjects treated with placebo vs. doxycycline at baseline and two years. Results One hundred and ninety-seven subjects (171 male, 26 female) were included in the analysis. All patients, regardless of treatment arm, demonstrated larger neck diameter caudally, a slight increase in diameter at all anatomical levels over time, and greater growth caudally. There was no statistically significant difference in infrarenal neck diameter between treatment arms at any anatomical level at any time point, nor mean change in neck diameter over two years. Conclusion Doxycycline does not demonstrate infrarenal aortic neck growth stabilisation in small AAA followed for two years by thin cut CT imaging using a standardised acquisition protocol and cannot be recommended for mitigation of growth of the aortic neck in patients with untreated small abdominal aortic aneurysms.
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Affiliation(s)
- Annalise M. Panthofer
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Sydney L. Olson
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Brooks L. Rademacher
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Larry W. Kraiss
- Department of Surgery, Division of Vascular Surgery, University of Utah, Salt Lake City, UT, USA
| | - William C. Blackwelder
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - B. Timothy Baxter
- Department of Surgery, Division of Vascular Surgery, University of Nebraska Medical Centre, Omaha, NE, USA
| | - Jason N. MacTaggart
- Department of Surgery, Division of Vascular Surgery, University of Nebraska Medical Centre, Omaha, NE, USA
| | - Barry T. Katzen
- Miami Cardiac and Vascular Institute, Baptist Health South Florida, Miami, FL, USA
| | | | - Jon S. Matsumura
- Department of Surgery, Division of Vascular Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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Ingram MC, Becker S, Olson SL, Tsai S, Sarkar A, Rothstein DH, Skarsgard ED, Raval MV. Disparities in surgical health service delivery and outcomes for indigenous children. J Pediatr Surg 2023; 58:375-383. [PMID: 36241445 DOI: 10.1016/j.jpedsurg.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 09/05/2022] [Accepted: 09/12/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Evidence of health disparities for Indigenous children requiring surgical care is lacking. We present a systematic review of the literature examining possible disparities in surgical care and outcomes for pediatric patients of Indigenous ethnicity. DATA SOURCES PubMed, Cochrane, MEDLINE, gray literature. METHODS Literature review, using PubMed, Cochrane, MEDLINE, and gray literature was conducted to identify articles published more than 2010-2020 examining children's surgical health service delivery (epidemiology, access, operations provided) and outcomes for pediatric patients of Indigenous ethnicity compared with others. Extracted data included study design, setting, participant race/ethnicity, operations examined, and surgical outcomes. Article quality was assessed using the Newcastle-Ottawa Scales. RESULTS From 411 abstracts, 125 articles were reviewed and 33 included for data abstraction. These were cohort and cross-sectional studies investigating a wide range of patient populations and procedures across the United States, Canada, Australia, and New Zealand. Articles were organized naturally by theme into birth malformations (15 articles), trauma (6 articles), pediatric general surgery/appendicitis (5 articles), pediatric otolaryngology (6 articles), and renal transplant (1 article) surgery. Four articles also described access and resource utilization related to inpatient care. Notable disparities observed included apparent increased prevalence of gastroschisis, rates of traumatic fatality, non accidental injury, and self harm among North American Indigenous children. CONCLUSIONS Indigenous children appear to be vulnerable to a number of health and treatment outcome disparities related to conditions treated by surgeons. Surgeons are thus uniquely poised to act in identifying and eliminating Indigenous ethnicity-based pediatric health disparities.
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Affiliation(s)
- Martha-Conley Ingram
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States.
| | - Sasha Becker
- Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Sydney L Olson
- Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Stacy Tsai
- Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Arjun Sarkar
- Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - David H Rothstein
- Division of Pediatric Surgery, Department of Surgery, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, WA, United States
| | - Erik D Skarsgard
- Division of Pediatric Surgery, Department of Surgery, University of British Columbia, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Mehul V Raval
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
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Olson SL, Ingram MCE, Graffy PM, Murphy PM, Tian Y, Samis JH, Josefson JL, Rastatter JC, Raval MV. Effect of surgeon volume on pediatric thyroid surgery outcomes: A systematic review. J Pediatr Surg 2022; 57:208-215. [PMID: 34980469 DOI: 10.1016/j.jpedsurg.2021.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 11/26/2021] [Accepted: 12/01/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Pediatric thyroidectomy has been identified as a surgical procedure that may benefit from concentrating cases to high-volume surgeons. This systematic review aimed to address the definition of "high-volume surgeon" for pediatric thyroidectomy and to examine the relationship between surgeon volume and outcomes. METHODS PubMed, Embase, Cochrane Library, Scopus, Web of Science, ClinicalTrials.gov, and OpenGrey databases were searched for through February 2020 for studies which reported on pediatric thyroidectomy and specified surgeon volume and surgical outcomes. RESULTS Ten studies, encompassing 6430 patients, were included in the review. Five single-center retrospective studies reported only on high-volume surgeons, one single center retrospective study reported on only low-volume surgeons, and four national database studies (2 cross sectional, 2 retrospective reviews) reported outcomes for both high-volume and low-volume surgeons. Majority of patients underwent total thyroidectomy (54.9%); common indications for surgery were malignancy (41.7%) and hyperthyroidism/thyroiditis (40.5%). Rates of transient hypocalcemia (11.4% - 74.2%), transient recurrent laryngeal nerve injury (0% - 9.7%), and bleeding (0.5% - 4.3%) varied across studies. Definitions for high-volume pediatric thyroid surgeons ranged from ≥9 annual pediatric thyroid operations to >200 annual thyroid operations (with >30 pediatric cases). Four studies reported significantly better outcomes, including lower post-operative complications and shorter length of hospital stay, for patients treated by high-volume surgeons. CONCLUSIONS Despite significant variation in caseloads to define volume, pediatric thyroid patients have generally better outcomes when operated on by higher volume surgeons. Concentration thyroidectomy cases to a smaller cohort of surgeons within pediatric practices may confer improved outcomes. LEVEL OF EVIDENCE Systematic Reviews and Meta-Analyses; Level IV.
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Affiliation(s)
- Sydney L Olson
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Martha-Conley E Ingram
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Peter M Graffy
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Peggy M Murphy
- Pritzker Research Library, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Yao Tian
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Jill H Samis
- Division of Pediatric Endocrinology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Jami L Josefson
- Division of Pediatric Endocrinology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Jeffery C Rastatter
- Department of Otorhinolaryngology-Head & Neck Surgery, Northwestern University, Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Mehul V Raval
- Division of Pediatric Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States.
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Abstract
Mesenteric artery dissection (D) and wall-thickening (WT) are rare vasculopathies that can lead to serious complications. This is a single center analysis of all patients evaluated for mesenteric arterial (celiac, superior (SMA) and/or inferior mesenteric (IMA)) D and/or WT from January 1, 2000, to January 31, 2020 at our hospital. Among the 101 included patients, the average age was 55.6 ± 13.6 years, mostly affecting men (62%). There were 20 celiac artery D, 8 WT, 15 D with WT, 15 SMA D, 7 WT, 8 D with WT, one IMA D, two WT, and 25 with multiple arterial involvement. Primary etiologies included segmental arterial mediolysis (SAM) (n = 17), isolated D (n = 17), localized vasculitis of the gastrointestinal tract (LVGT) (n = 16), fibromuscular dysplasia (FMD) (n = 13), extension of thoracoabdominal aortic D (n = 12), and trauma (n = 12). Most (71%) patients presented with abdominal pain. Hypertension (55%), hyperlipidemia (33%) and tobacco use (31%) were prevalent. Management included conservative (22%), medical (47%), endovascular (19%), and/or open repair (12%) with high in-hospital survival (98%) and symptom relief (73%). Our paper complements the scarce literature addressing the diagnosis and management of rare mesenteric vasculopathies. Most patients improved with conservative management, reserving endovascular or surgical interventions for symptomatic patients with more complicated presentations.
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Affiliation(s)
- Nedaa Skeik
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute at Abbott Northwestern Hospital, Minneapolis, MN, USA.,51432Minneapolis Heart Institute Foundation, Minneapolis, MN, USA
| | - Jenna Smith
- 51432Minneapolis Heart Institute Foundation, Minneapolis, MN, USA
| | - Sydney L Olson
- 12244Northwestern University Feiberg School of Medicine, Chicago, IL, USA
| | - Opema L Lohese
- 51432Minneapolis Heart Institute Foundation, Minneapolis, MN, USA
| | - Aleem Mirza
- Department of Cardiovascular and Vascular Surgery, 12340University of Texas Health Science, Houston, TX, USA
| | - Jesse Manunga
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute at Abbott Northwestern Hospital, Minneapolis, MN, USA.,51432Minneapolis Heart Institute Foundation, Minneapolis, MN, USA
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Olson SL, Ingram MCE, Samis JH, Josefson JL, Rastatter JC, Rothstein DH, Danko M, Moriarty KP, Rich B, Raval MV. Surgeon Perceptions of Volume Threshold and Essential Practices for Pediatric Thyroidectomy. J Am Coll Surg 2021. [DOI: 10.1016/j.jamcollsurg.2021.08.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Olson SL, Panthofer AM, Blackwelder W, Terrin ML, Curci JA, Baxter BT, Weaver FA, Matsumura JS. Role of volume in small abdominal aortic aneurysm surveillance. J Vasc Surg 2021; 75:1260-1267.e3. [PMID: 34655683 DOI: 10.1016/j.jvs.2021.09.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/29/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Current management of small abdominal aortic aneurysms (AAAs) primarily involves serial imaging surveillance of maximum transverse diameter (MTD) to estimate rupture risk. Other measurements, such as volume and tortuosity, are less well-studied and may help characterize and predict AAA progression. This study evaluated predictors of AAA volume growth and discusses the role of volume in clinical practice. METHODS Subjects from the Non-invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (baseline AAA MTD, 3.5-5.0 cm) with ≥2 computed tomography scans were included in this study (n = 250). Computed tomography scans were conducted approximately every 6 months over 2 years. MTD, volume, and tortuosity were used to model growth. Univariable and multivariable backwards elimination least squares regressions assessed associations with volume growth. RESULTS Baseline MTD accounted for 43% of baseline volume variance (P < .0001). Mean volume growth rate was 10.4 cm3/year (standard deviation, 8.8 cm3/year) (mean volume change +10.4%). Baseline volume accounted for 30% of volume growth variance; MTD accounted for 13% of volume growth variance. More tortuous aneurysms at baseline had significantly larger volume growth rates (difference, 32.8 cm3/year; P < .0001). Univariable analysis identified angiotensin II receptor blocker use (difference, -3.4 cm3/year; P = .02) and history of diabetes mellitus (difference, -2.8 cm3/year; P = .04) to be associated with lower rates of volume growth. Baseline volume, tortuosity index, current tobacco use, and absence of diabetes mellitus remained significantly associated with volume growth in multivariable analysis. AAAs that reached the MTD threshold for repair had a wide range of volumes: 102 cm3 to 142 cm3 in female patients (n = 5) and 105 cm3 to 229 cm3 in male patients (n = 20). CONCLUSIONS Baseline AAA volume and MTD were found to be moderately correlated. On average, AAA volume grows about 10% annually. Baseline volume, tortuosity, MTD, current tobacco use, angiotensin II receptor blocker use, and history of diabetes mellitus were predictive of volume growth over time.
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Affiliation(s)
- Sydney L Olson
- Division of Vascular Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisc.
| | - Annalise M Panthofer
- Division of Vascular Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisc
| | - William Blackwelder
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Md
| | - Michael L Terrin
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Md
| | - John A Curci
- Division of Vascular Surgery, Vanderbilt University Medical Center, Nashville, Tenn
| | - B Timothy Baxter
- Division of Vascular Surgery, University of Nebraska School of Medicine, Omaha, Neb
| | - Fred A Weaver
- Division of Vascular Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, Calif
| | - Jon S Matsumura
- Division of Vascular Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisc
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9
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Panthofer AM, Olson SL, Rademacher BL, Grudzinski JK, Chaikof EL, Matsumura JS. Anatomic eligibility for endovascular aneurysm repair preserved over 2 years of surveillance. J Vasc Surg 2021; 74:1527-1536.e1. [PMID: 33957227 DOI: 10.1016/j.jvs.2021.04.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 04/10/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Endovascular aneurysm repair (EVAR) is a widely used option for patients with suitable vascular anatomy who have a large infrarenal abdominal aortic aneurysm (AAA). Patients with small AAAs are managed with careful surveillance and it is a common concern that their anatomy may change with AAA growth, and their option for EVAR may become limited. Device innovation has resulted in expanded ranges of anatomy that may be eligible for EVAR. This study sought to identify changes in anatomic eligibility for repair with contemporary endovascular devices in AAA patients, monitored by computed tomography scan over the course of 2 years. METHODS Patients from the Non-Invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA3CT, NCT01756833) were included in this analysis. Females had baseline AAA maximum transverse diameter between 3.5 and 4.5 cm, and males had baseline maximum transverse diameter between 3.5 and 5.0 cm. Patients were included in this analysis if they completed pre-enrollment and 2-year follow-up computed tomography imaging. Pertinent anatomic measurements were performed on a postprocessing workstation in a centralized imaging core laboratory. EVAR candidacy was determined by measuring proximal aortic neck diameter, AAA length, and infrarenal neck angulation. Patients were considered to be eligible for EVAR if they qualified for at least one of the seven studied devices' instructions for use at baseline and at 2 years. A paired t test analysis was used to detect differences in aortic measurements over 2 years, and the McNemar test was used to compare eligibility over 2 years. RESULTS We included 192 patients in this analysis-168 male and 24 female. Of these patients, 85% were eligible for EVAR at baseline and 85% after 2 years of follow-up (P = 1.00; 95% confidence interval -0.034 to 0.034). Of the 164 EVAR candidates at baseline, 160 (98%) remained eligible over 2 years of surveillance. Insufficient neck length was the most common reason for both ineligibility at baseline (18 of 28 patients) as well as loss of candidacy over 2 years (3 of 4 patients). CONCLUSIONS The majority of patients eligible for EVAR when entering a surveillance program for small AAA remain eligible after 2 years. Substantial changes in AAA neck anatomy resulting in loss of EVAR treatment options are infrequent. Patients with anatomic AAA progression beyond EVAR eligibility remain candidates for complex EVAR and open repair.
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Affiliation(s)
- Annalise M Panthofer
- School of Medicine and Public Health, Division of Vascular Surgery, University of Wisconsin, Madison, Wisc.
| | - Sydney L Olson
- School of Medicine and Public Health, Division of Vascular Surgery, University of Wisconsin, Madison, Wisc
| | - Brooks L Rademacher
- School of Medicine and Public Health, Division of Vascular Surgery, University of Wisconsin, Madison, Wisc
| | - Jennifer K Grudzinski
- School of Medicine and Public Health, Division of Vascular Surgery, University of Wisconsin, Madison, Wisc
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Cambridge, Mass
| | - Jon S Matsumura
- School of Medicine and Public Health, Division of Vascular Surgery, University of Wisconsin, Madison, Wisc
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10
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Walker KL, Rinella SP, Hess NJ, Turicek DP, Kabakov SA, Zhu F, Bouchlaka MN, Olson SL, Cho MM, Quamine AE, Feils AS, Gavcovich TB, Rui L, Capitini CM. CXCR4 allows T cell acute lymphoblastic leukemia to escape from JAK1/2 and BCL2 inhibition through CNS infiltration. Leuk Lymphoma 2021; 62:1167-1177. [PMID: 33843403 DOI: 10.1080/10428194.2021.1910684] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Targeting the JAK/STAT and BCL2 pathways in patients with relapsed/refractory T cell acute lymphoblastic leukemia (T-ALL) may provide an alternative approach to achieve clinical remissions. Ruxolitinib and venetoclax show a dose-dependent effect on T-ALL individually, but combination treatment reduces survival and proliferation of T-ALL in vitro. Using a xenograft model, the combination treatment fails to improve survival, with death from hind limb paralysis. Despite on-target inhibition by the drugs, histopathology demonstrates increased leukemic infiltration into the central nervous system (CNS) as compared to liver or bone marrow. Liquid chromatography-tandem mass spectroscopy shows that ruxolitinib and venetoclax insufficiently cross into the CNS. The addition of the CXCR4 inhibitor plerixafor with ruxolitinib and venetoclax reduces clinical scores and enhances survival. While combination therapy with ruxolitinib and venetoclax shows promise for treating T-ALL, additional inhibition of the CXCR4-CXCL12 axis may be needed to maximize the possibility of complete remission.
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Affiliation(s)
- Kirsti L Walker
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Sean P Rinella
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Nicholas J Hess
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - David P Turicek
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Sabrina A Kabakov
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Fen Zhu
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Myriam N Bouchlaka
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Sydney L Olson
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Monica M Cho
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Aicha E Quamine
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Arika S Feils
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Tara B Gavcovich
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Lixin Rui
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.,Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Christian M Capitini
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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Olson SL, Wijesinha MA, Panthofer AM, Blackwelder WC, Upchurch GR, Terrin ML, Curci JA, Baxter BT, Matsumura JS. Evaluating Growth Patterns of Abdominal Aortic Aneurysm Diameter With Serial Computed Tomography Surveillance. JAMA Surg 2021; 156:363-370. [PMID: 33595625 DOI: 10.1001/jamasurg.2020.7190] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Importance Small abdominal aortic aneurysms (AAAs) are common in the elderly population. Their growth rates and patterns, which drive clinical surveillance, are widely disputed. Objective To assess the growth patterns and rates of AAAs as documented on serial computed tomography (CT) scans. Design, Setting, and Participants Cohort study and secondary analysis of the Non-Invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA3CT), a randomized, double-blind placebo-controlled clinical trial conducted from 2013 to 2018, with CT imaging every 6 months for 2 years. The trial was a multicenter, observational secondary analysis, not related to treatment hypotheses of data collected in the N-TA3CT. Participants included 254 patients with baseline AAA diameter between 3.5 and 5.0 cm. Exposures Patients received serial CT scan measurements, analyzed for maximum transverse diameter, at 6-month intervals. Main Outcomes and Measures The primary study outcome was AAA annual growth rate. Secondary analyses included characterizing AAA growth patterns, assessing likelihood of AAA diameter to exceed sex-specific intervention thresholds over 2 years. Results A total of 254 patients, 35 women with baseline AAA diameter 3.5 to 4.5 cm and 219 men with baseline diameter 3.5 to 5.0 cm, were included. Yearly growth rates of AAA diameters were a median of 0.17 cm/y (interquartile range [IQR], 0.16) and a mean (SD), 0.19 (0.14) cm/y. Ten percent of AAAs displayed minimal to no growth (<0.05 cm/y), 62% displayed low growth (0.05-0.25 cm/y), and 28% displayed high growth (>0.25 cm/y). Baseline AAA diameter accounted for 5.4% of variance of growth rate (P < .001; R2, 0.054). Most AAAs displayed linear growth (70%); large variations in interval growth rates occurred infrequently (3% staccato growth and 4% exponential growth); and some patients' growth patterns were not clearly classifiable (23% indeterminate). No patients with a maximum transverse diameter less than 4.25 cm exceeded sex-specific repair thresholds at 2 years (men, 0 of 92; 95% CI, 0.00-0.055; women, 0 of 25 ; 95% CI, 0.00-0.247). Twenty-six percent of patients with a maximum transverse diameter of at least 4.25 cm exceeded sex-specific repair thresholds at 2 years (n = 12 of 83 men with diameter ranging from 4.25 to <4.75 cm; 95% CI, 0.091-0.264; n = 21 of 44 men with diameter ranging from 4.75-5.0 cm; 95% CI, 0.362-0.669; n = 3 of 10 women with diameter ≥4.25 cm; 95% CI, 0.093-0.726). Conclusions and Relevance Most small AAAs showed linear growth; large intrapatient variations in interval growth rates were infrequently observed over 2 years. Linear growth modeling of AAAs in individual patients suggests smaller AAAs (<4.25 cm) can be followed up with a CT scan in at least 2 years with little chance of exceeding interventional thresholds. Trial Registration ClinicalTrials.gov Identifier: NCT01756833.
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Affiliation(s)
- Sydney L Olson
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison
| | - Marniker A Wijesinha
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore
| | - Annalise M Panthofer
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison
| | - William C Blackwelder
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore
| | | | - Michael L Terrin
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore
| | - John A Curci
- Division of Vascular Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
| | - B Timothy Baxter
- Division of Vascular Surgery, University of Nebraska School of Medicine, Omaha
| | - Jon S Matsumura
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison
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12
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Rauch DA, Olson SL, Harding JC, Sundaramoorthi H, Kim Y, Zhou T, MacLeod AR, Challen G, Ratner L. Interferon regulatory factor 4 as a therapeutic target in adult T-cell leukemia lymphoma. Retrovirology 2020; 17:27. [PMID: 32859220 PMCID: PMC7456374 DOI: 10.1186/s12977-020-00535-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/17/2020] [Indexed: 12/30/2022] Open
Abstract
Background Adult T-cell leukemia lymphoma (ATLL) is a chemotherapy-resistant malignancy with a median survival of less than one year that will afflict between one hundred thousand and one million individuals worldwide who are currently infected with human T-cell leukemia virus type 1. Recurrent somatic mutations in host genes have exposed the T-cell receptor pathway through nuclear factor κB to interferon regulatory factor 4 (IRF4) as an essential driver for this malignancy. We sought to determine if IRF4 represents a therapeutic target for ATLL and to identify downstream effectors and biomarkers of IRF4 signaling in vivo. Results ATLL cell lines, particularly Tax viral oncoprotein-negative cell lines, that most closely resemble ATLL in humans, were sensitive to dose- and time-dependent inhibition by a next-generation class of IRF4 antisense oligonucleotides (ASOs) that employ constrained ethyl residues that mediate RNase H-dependent RNA degradation. ATLL cell lines were also sensitive to lenalidomide, which repressed IRF4 expression. Both ASOs and lenalidomide inhibited ATLL proliferation in vitro and in vivo. To identify biomarkers of IRF4-mediated CD4 + T-cell expansion in vivo, transcriptomic analysis identified several genes that encode key regulators of ATLL, including interleukin 2 receptor subunits α and β, KIT ligand, cytotoxic T-lymphocyte-associated protein 4, and thymocyte selection-associated high mobility group protein TOX 2. Conclusions These data support the pursuit of IRF4 as a therapeutic target in ATLL with the use of either ASOs or lenalidomide.
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Affiliation(s)
- Daniel A Rauch
- Division of Oncology, Department of Medicine, Washington University in St. Louis, 660 S Euclid Ave, Box 8069, St Louis, MO, 63110, USA
| | - Sydney L Olson
- Division of Oncology, Department of Medicine, Washington University in St. Louis, 660 S Euclid Ave, Box 8069, St Louis, MO, 63110, USA
| | - John C Harding
- Division of Oncology, Department of Medicine, Washington University in St. Louis, 660 S Euclid Ave, Box 8069, St Louis, MO, 63110, USA
| | - Hemalatha Sundaramoorthi
- Division of Oncology, Department of Medicine, Washington University in St. Louis, 660 S Euclid Ave, Box 8069, St Louis, MO, 63110, USA
| | | | | | | | - Grant Challen
- Division of Oncology, Department of Medicine, Washington University in St. Louis, 660 S Euclid Ave, Box 8069, St Louis, MO, 63110, USA
| | - Lee Ratner
- Division of Oncology, Department of Medicine, Washington University in St. Louis, 660 S Euclid Ave, Box 8069, St Louis, MO, 63110, USA.
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Harris DG, Olson SL, Panthofer AM, Matsumura JS, DiMusto PD. A Frailty-Based Risk Score Predicts Morbidity and Mortality After Elective Endovascular Repair of Descending Thoracic Aortic Aneurysms. Ann Vasc Surg 2020; 67:90-99. [DOI: 10.1016/j.avsg.2019.10.090] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 12/21/2022]
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Panthofer AM, Olson SL, Rademacher BL, Kraiss LW, Curci JA, Terrin M, Baxter BT, Matsumura JS. Infrarenal Aortic Neck Diameter Is Unaltered by Treatment With Doxycycline. J Vasc Surg 2020. [DOI: 10.1016/j.jvs.2020.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Abstract
Segmental arterial mediolysis (SAM) is a rare but serious nonatherosclerotic, noninflammatory vasculopathy of unknown etiology that often results in dissection, aneurysm, occlusion, or stenosis of, primarily, the abdominal arteries. Current literature lacks consensus on diagnostic criteria and management options for SAM. This review summarizes 143 cases and aims to advance appropriate recognition and management of SAM. Literature review of all relevant SAM case studies from 2005 to 2018 yielded 126 individual SAM cases from 66 reports. We identified 17 additional SAM cases from our center, bringing our analysis to 143 patients. Patients with SAM were most commonly men (68%) in their 60s. Hypertension (43%), tobacco use (12%), and hyperlipidemia (12%) were common comorbidities. Abdominal pain (80%) and intraabdominal bleeding (50%) were the most common presenting symptoms. Computed tomography was the most frequently used imaging method (78%), and histology was available in 44% of cases. The most commonly affected vessels were the superior mesenteric (53%), hepatic (45%), celiac (36%), renal (26%), and splenic (25%) arteries with aneurysm (76%), dissection (61%), and arterial rupture (46%). Treatments included coil embolization (28%), abdominal organ surgery (24%), open arterial repair (21%), and medical management (20%). Case-specific treatment modalities yielded symptom relief in the vast majority (91%) of patients, with a mortality rate of 7%.
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Affiliation(s)
- Nedaa Skeik
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
| | - Sydney L Olson
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
| | - Gopika Hari
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
| | - Mary L Pavia
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
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Olson SL, Panthofer AM, Harris DJ, Jordan WD, Farber MA, Cambria RP, Matsumura JS. CT-Derived Pretreatment Thoracic Sarcopenia Is Associated with Late Mortality after Thoracic Endovascular Aortic Repair. Ann Vasc Surg 2019; 66:171-178. [PMID: 31705993 DOI: 10.1016/j.avsg.2019.10.089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND Frailty, characterized by physiologic depletion, predicts postoperative morbidity and mortality in vascular surgery patients. CT-derived sarcopenia is a valuable method for objectively staging frailty preoperatively. PURPOSE With prior analyses primarily measuring psoas cross-sectional area on CT, we compared a method of measuring thoracic sarcopenia to existing techniques of lumbar sarcopenia and assessed the association with long-term survival and outcomes post-Thoracic Endovascular Aortic Repair (TEVAR). METHODS Prospectively collected data of 217 patients undergoing TEVAR from 2009 to 2012 were reviewed. Thoracic sarcopenia was quantified by measuring total area of the rectus abdominis, latissimus dorsi, intercostal, erector spinae, and external and internal oblique muscles at the T12 vertebral level. Total psoas area at the L3 was used to measure lumbar sarcopenia. RESULTS 200 patients had preoperative imaging enabling measurements of thoracic sarcopenia, 186 of these patients were also assessed for lumbar sarcopenia. Thoracic sarcopenic patients were older, had lower body mass indices, were more commonly female, and most commonly being treated for aneurysms. Thoracic sarcopenic patients had significantly higher rates of congestive heart failure, hypertension, prior vascular intervention, and TEVAR-related adverse events. Thoracic sarcopenia was associated with significantly higher mortality at 2 and 5 years post-TEVAR (2-year mortality: 19% vs 8%, P = 0.02; 5-year mortality: 31% vs 18%, P = 0.03). Lumbar sarcopenia was not associated with increased mortality at any time point. Patients whose muscle mass degraded over 48-month follow-up did not experience significantly higher rates of adverse events. CONCLUSIONS CT-derived thoracic sarcopenia, but not lumbar sarcopenia, is significantly associated with 5-year mortality post-TEVAR.
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Affiliation(s)
- Sydney L Olson
- Division of Vascular Surgery, University of Wisconsin School of Medicine & Public Health, Madison, WI.
| | - Annalise M Panthofer
- Division of Vascular Surgery, University of Wisconsin School of Medicine & Public Health, Madison, WI
| | - Donald J Harris
- Division of Vascular Surgery, University of Wisconsin School of Medicine & Public Health, Madison, WI
| | - William D Jordan
- Division of Vascular Surgery and Endovascular Therapy, Emory University School of Medicine, Atlanta, GA
| | - Mark A Farber
- Division of Vascular Surgery, University of North Carolina, Chapel Hill, NC
| | | | - Jon S Matsumura
- Division of Vascular Surgery, University of Wisconsin School of Medicine & Public Health, Madison, WI
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17
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Olson SL, Murray ML, Skeik N. A Novel Frameshift COL3A1 Variant in Vascular Ehlers-Danlos Syndrome. Ann Vasc Surg 2019; 61:472.e9-472.e13. [PMID: 31394236 DOI: 10.1016/j.avsg.2019.05.057] [Citation(s) in RCA: 2] [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] [Received: 09/28/2018] [Revised: 05/21/2019] [Accepted: 05/29/2019] [Indexed: 10/26/2022]
Abstract
Ehlers-Danlos syndromes (EDSs) are a group of heritable connective tissue disorders with distinct genetic etiologies. Of the 13 currently recognized types of EDS, the vascular type EDS (vEDS) is generally considered the most severe and is associated with a decreased life expectancy due to spontaneous arterial, intestinal, and or uterine rupture. Diagnosis of vEDS is supported by genetic testing confirming the presence of pathogenic variations in COL3A1, a type III procollagen gene. Management of vEDS is usually conservative with control of hemodynamic stress, frequent cardiovascular imaging, and, if indicated, a thoughtful endovascular intervention or surgical repair. We present a novel frameshift variant in COL3A1 leading to vEDS with multiple vascular involvements. Based on our literature review, this variant has not been reported and may result in a less severe form of vEDS. Our case report provides insight into genetic variants and clinical expression of vEDS.
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Affiliation(s)
| | | | - Nedaa Skeik
- Minneapolis Heart Institute, Minneapolis, MN.
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18
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Skeik N, Hyde JR, Olson SL, Thaler CM, Abuatiyeh W, Ahmed AK, Lyon DR, Witt DR, Garberich R, Sullivan T. Nonatherosclerotic Abdominal Vasculopathies. Ann Vasc Surg 2019; 60:128-146. [DOI: 10.1016/j.avsg.2019.04.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/11/2019] [Accepted: 04/04/2019] [Indexed: 11/28/2022]
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19
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Walker KL, Kabakov SA, Zhu F, Olson SL, Rui L, Capitini CM. Abstract 2975: CXCR4 blockade of T cell acute lymphoblastic leukemia causes systemic disease in an NSG model allowing ruxolitinib and venetoclax to synergistically treat cancer burden. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-2975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is a hematologic malignancy that accounts for 25% of adult and 15% of pediatric acute lymphoblastic leukemia (ALL) cases. Relapsed or refractory T-ALL is difficult to salvage with chemotherapy, which causes long-term toxicity, and is often fatal. The JAK/STAT and BCL-2 pathways are upregulated in T-ALL and promote increased T-ALL proliferation and survival. Currently, targeted therapies of the JAK/STAT and BCL-2 pathways have not been investigated in combination. I propose that dual inhibition of the JAK/STAT and BCL-2 pathways, with ruxolitinib and venetoclax respectively, will lead to maximal T-ALL cell death. Jurkat cells were treated with single doses of ruxolitinib (0.156µM - 5µM) or venetoclax (1.56nM - 50nM) in vitro, and analyzed by trypan blue exclusion, MTT and flow cytometry at 24, 48 and 72h post-treatment. Results demonstrate decreased proliferation by MTT, decreased viability by trypan blue exclusion, and increased apoptosis by flow cytometry for the three highest doses of ruxolitinib (1.25µM, 2.5µM and 5µM) and venetoclax (12.5nM, 25nM and 50nM). A synergistic effect was achieved for all three assays at 48 and 72h when cells were treated with a combination dose of ruxolitinib (1.25µM) and venetoclax (25nM; CI<1). This optimal in vitro combined dose significantly decreased proliferation (p<0.0001) and viability (p<0.0001) of Jurkat cells compared to vehicle and single drug treatment groups. Jurkat-GFP cells were injected intravenously into NSG mice to mimic a systemic in vivo xenograft model of T-ALL, and followed for clinical scores and survival. End organs were analyzed for GFP+CD45+ cells by flow cytometry and GFP+ cells by immunohistochemistry (IHC). Compared to single treatments of ruxolitinib and venetoclax, all mice treated with ruxolitinib and/or venetoclax combination therapy developed hind-limb paralysis and died of CNS disease in the spinal cord and brain as shown by IHC. This suggests for the first time that ruxolitinib or venetoclax cannot penetrate the blood brain barrier (BBB). LC-MS-MS studies were performed to confirm that ruxolitinib and venetoclax cannot penetrate the BBB. Previously published data suggests that T-ALL exploits the CXCR4-CXCL12 chemokine pathway to relapse into the CNS. Jurkat cells were analyzed by flow cytometry and showed high expression of the CXCR4 surface receptor while NSG brain tissue showed presence of CXCL12 mRNA and protein by in situ hybridization (ISH) and western blot analysis. Antibody blockade of CXCR4 in vivo prevented the migration of Jurkat cells into the CNS and suggests that disruption of the CXCR4-CXCL12 pathway will result in a systemic model of T-ALL that could allow for ruxolitinib and venetoclax to eliminate T-ALL at primary sites of disease.
Citation Format: Kirsti L. Walker, Sabrina A. Kabakov, Fen Zhu, Sydney L. Olson, Lixin Rui, Christian M. Capitini. CXCR4 blockade of T cell acute lymphoblastic leukemia causes systemic disease in an NSG model allowing ruxolitinib and venetoclax to synergistically treat cancer burden [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 2975.
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Affiliation(s)
| | | | - Fen Zhu
- 1University of Wisconsin-Madison, Madison, WI
| | | | - Lixin Rui
- 1University of Wisconsin-Madison, Madison, WI
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20
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Panthofer AM, Olson SL, Harris DG, Matsumura JS. Derivation and validation of thoracic sarcopenia assessment in patients undergoing thoracic endovascular aortic repair. J Vasc Surg 2019; 69:1379-1386. [DOI: 10.1016/j.jvs.2018.08.180] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/23/2018] [Indexed: 01/06/2023]
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Abstract
New fossils of giant, flightless penguinlike birds have been found in late Oligocene and early Miocene rocks in Japan and in the state of Washington. These birds belong to the order Pelecaniformes, in the extinct family Plotopteridae, previously known by a single fragment of bone from California. Hindlimb and pelvic morphology is most similar to that of Recent anhingas, but the wing is paddlelike and remarkably convergent toward penguins and flightless auks. Both the Plotopteridae and the giant penguins became extinct by the middle Miocene, possibly because of competition from seals and porpoises.
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Abstract
Thousands of fossil bird bones from the Hawaiian Islands collected since 1971 include remains of at least 39 species of land birds that are not known to have survived into the historic period; this more than doubles the number of endemic species of land birds previously known from the main islands. Bones were found in deposits of late Quaternary age; most are Holocene and many are contemporaneous with Polynesian culture. The loss of species of birds appears to be due to predation and destruction of lowland habitats by humans before the arrival of Europeans. Because the historically known fauna and flora of the Hawaiian Islands represent only afraction of natural species diversity, biogeographical inferences about natural processes based only on historically known taxa may be misleading or incorrect.
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Steadman DW, Pregill GK, Olson SL. Fossil vertebrates from Antigua, Lesser Antilles: Evidence for late Holocene human-caused extinctions in the West Indies. Proc Natl Acad Sci U S A 2010; 81:4448-51. [PMID: 16593490 PMCID: PMC345607 DOI: 10.1073/pnas.81.14.4448] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Vertebrate remains recovered from a limestone fissure filling on Antigua, Lesser Antilles, are associated with radiocarbon dates ranging from 4300 to 2500 yr B.P., contemporaneous with the earliest aboriginal human occupation of the island. Nine taxa of lizards, snakes, birds, bats, and rodents (one-third of the total number of species represented as fossils) are either completely extinct or have never been recorded historically from Antigua. These extinctions came long after any major climatic changes of the Pleistocene and are best attributed to human-caused environmental degradation in the past 3500 yr. Such unnatural influences have probably altered patterns of distribution and species diversity throughout the West Indies, thus rendering unreliable the data traditionally used in ecological and biogeographic studies that consider only the historically known fauna.
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Affiliation(s)
- D W Steadman
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560
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Steadman DW, Olson SL. Bird remains from an archaeological site on Henderson Island, South Pacific: Man-caused extinctions on an "uninhabited" island. Proc Natl Acad Sci U S A 2010; 82:6191-5. [PMID: 16593606 PMCID: PMC391018 DOI: 10.1073/pnas.82.18.6191] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Long thought never to have been inhabited and to be in a pristine ecological state, Henderson Island (southeast Pacific) is now known to have been colonized and then abandoned by Polynesians. Bones from an archaeological site on the island associated with (14)C dates of approximately 800 and approximately 500 years B.P. include specimens of 12 species of birds, of which 3, a storm-petrel and two pigeons (Nesofregetta fuliginosa, Ducula cf. aurorae or D. pacifica, and Ducula cf. galeata), no longer occur on Henderson, and two others (Puffinus nativitatis and Sula sula) still visit but are not known to breed. The vanished species were presumably exterminated by Polynesians and the biota of Henderson Island can thus no longer be regarded as being in an unaltered state. The prehistoric abandonment of various small, unarable islands by Polynesians may have been due to the depletion of seabirds and pigeons, the only readily available food source. The species of pigeons identified from Henderson are known historically only from distant archipelagos and have never before been found sympatrically. Distributional patterns resulting from man-caused extinctions may give rise to erroneous interpretations of the relationships and evolutionary history of insular organisms. Certain endangered species, such as Ducula galeata, might effectively be preserved by reintroduction to abandoned islands that they occupied before human intervention.
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Affiliation(s)
- D W Steadman
- National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560
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Cook KF, Gartsman GM, Roddey TS, Olson SL. The measurement level and trait-specific reliability of 4 scales of shoulder functioning: an empiric investigation. Arch Phys Med Rehabil 2001; 82:1558-65. [PMID: 11689976 DOI: 10.1053/apmr.2001.26622] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To evaluate 4 scales of shoulder function with respect to (1) their precision at different levels of shoulder function and (2) the measurement level of their raw scores (interval vs ordinal). DESIGN Partial credit model calibration. SETTING Office of private practice orthopedic surgeon with practice limited to the shoulder. PARTICIPANTS One-hundred ninety-two shoulder patients. INTERVENTIONS Participants completed the American Shoulder and Elbow Surgeons Patient Self-Evaluation Form (function subscale, modified), the disability subscale of the Shoulder Pain and Disability Index, the Simple Shoulder Test, and the function subscale of the University of Pennsylvania Shoulder Scale. MAIN OUTCOME MEASURES The patients' responses were calibrated by using a partial credit model. We calculated standard errors of measurement and plotted the 95% confidence interval for different levels of shoulder functioning. We compared scales' raw scores with their equal interval measures obtained in the Rasch calibration. RESULTS The scales did not measure all levels of shoulder functioning with equal precision, suggesting that commonly used reliability estimates misrepresent scale precision in certain subpopulations. CONCLUSIONS The scales' raw scores were found to be not of equal interval, calling into question the scoring systems recommended by the developers of these scales and the use of the scores in some statistical procedures.
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Affiliation(s)
- K F Cook
- Center of Excellence on Healthy Aging with Disabilities, VA Rehabilitation R&D, Houston, TX, USA.
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Solberg LC, Olson SL, Turek FW, Redei E. Altered hormone levels and circadian rhythm of activity in the WKY rat, a putative animal model of depression. Am J Physiol Regul Integr Comp Physiol 2001; 281:R786-94. [PMID: 11506993 DOI: 10.1152/ajpregu.2001.281.3.r786] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Wistar Kyoto (WKY) rat is hyperreactive to stress and exhibits depressive-like behavior in several standard behavioral tests. Because patients with depressive disorders often exhibit disruptions in the circadian rhythm of activity, as well as altered secretory patterns of the hypothalamic-pituitary-adrenal and hypothalamic-pituitary-thyroid hormones, we tested the hypothesis that these phenomena occur in the WKY rat. Plasma ACTH and corticosterone levels remained significantly higher after the diurnal peak for several hours in WKY rats relative to Wistar rats. Also, plasma levels of thyroid-stimulating hormone were significantly higher in WKY relative to Wistar rats across the 24-h period, despite normal or slightly higher levels of 3,5,3'-triiodothyronine. In addition, under constant darkness conditions, WKY rats exhibited a shorter free running period and a decreased response to a phase-delaying light pulse compared with Wistar rats. In several ways these results are similar to those seen in other animal models of depression as well as in depressed humans, suggesting that the WKY rat could be used to investigate the genetic basis for these abnormalities.
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Affiliation(s)
- L C Solberg
- Department of Psychiatry and Behavioral Sciences, Northwestern University, 303 E. Chicago Ave., Chicago, IL 60611, USA.
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Jankovic J, Lai EC, Ondo WG, Roberts-Warrior D, Olson SL, Krauss JK, Grossman RG. Effects of pallidotomy on gait and balance. Adv Neurol 2001; 87:271-81. [PMID: 11347232] [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] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Affiliation(s)
- J Jankovic
- Department of Neurology, Parkinson's Disease Center and Movement Disorders Clinic, Baylor College of Medicine, Houston, Texas 77030, USA
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Hanten WP, Olson SL, Butts NL, Nowicki AL. Effectiveness of a home program of ischemic pressure followed by sustained stretch for treatment of myofascial trigger points. Phys Ther 2000; 80:997-1003. [PMID: 11002435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND AND PURPOSE Myofascial trigger points (TPs) are found among patients who have neck and upper back pain. The purpose of this study was to determine the effectiveness of a home program of ischemic pressure followed by sustained stretching for the treatment of myofascial TPs. SUBJECTS Forty adults (17 male, 23 female), aged 23 to 58 years (mean=30.6, SD=9.3), with one or more TPs in the neck or upper back participated in this study. METHODS Subjects were randomly divided into 2 groups receiving a 5-day home program of either ischemic pressure followed by general sustained stretching of the neck and upper back musculature or a control treatment of active range of motion. Measurements were obtained before the subjects received the home program instruction and on the third day after they discontinued treatment. Trigger point sensitivity was measured with a pressure algometer as pressure pain threshold (PPT). Average pain intensity for a 24-hour period was scored on a visual analog scale (VAS). Subjects also reported the percentage of time in pain over a 24-hour period. A multivariate analysis of covariance, with the pretests as the covariates, was performed and followed by 3 analyses of covariance, 1 for each variable. RESULTS Differences were found between the treatment and control groups for VAS scores and PPT. No difference was found between the groups for percentage of time in pain. CONCLUSION AND DISCUSSION A home program, consisting of ischemic pressure and sustained stretching, was shown to be effective in reducing TP sensitivity and pain intensity in individuals with neck and upper back pain. The results of this study indicate that clinicians can treat myofascial TPs through monitoring of a home program of ischemic pressure and stretching.
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Affiliation(s)
- W P Hanten
- School of Physical Therapy, Texas Woman's University, 1130 MD Anderson Blvd, Houston, TX 77030, USA.
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Abstract
Preschool boys' emotional displays during conflicts with mixed-sex peers were related to individual differences in peer sociometric status and teacher ratings of disruptive behavior. Participants were 60 4- to 5-year old boys from low-income families who were videotaped with a small group of classmates in a Head Start preschool classroom. Conflicts were identified and emotional displays were coded from videotape. Results indicated that conflicts were more negative in emotional tone at the end than at the beginning of the year. Furthermore, children tended to mirror each others' emotional displays at the end but not the beginning of the preschool year. In addition, gleeful taunting, a form of emotional aggression, more strongly predicted negative peer nominations and teacher ratings than anger, suggesting that anger may be a more socially accepted form of emotional expression during conflicts among preschool-age children. Implications and directions for future research and interventions are discussed.
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Affiliation(s)
- A L Miller
- Department of Psychology, University of Michigan, Ann Arbor 48109-1109, USA.
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Abstract
This study examined the infancy- and toddler-age precursors of children's later externalizing problem behavior. Risk constructs included suboptimal patterns of observed caregiver-child interaction and the caregiver's perception of child difficultness and resistance to control. In addition, a novel dimension of caregiver-child relationship quality, the caregiver's perception of her toddler's unresponsiveness to her, was examined as a possible precursor of children's externalizing behavior. Externalizing problem outcomes were assessed throughout the school-age period and again at age 17, using multiple informants. As toddlers, children at risk for later externalizing behavior were perceived as difficult and resistant to control, and relationships with their caregivers were relatively low in warmth and affective enjoyment. Finally, the caregiver's perception of her toddler as emotionally unresponsive to her was a consistent predictor of later externalizing behavior, suggesting that negative maternal cognitions associated with child conduct problems may begin in toddlerhood. These predictive patterns were similar for boys and girls, and with minor exceptions, generalized across different subdimensions of externalizing problem behavior. Our findings underscore the importance of the infancy and toddler periods to children's long-term behavioral adjustment, and indicate the desirability of further research into the nature of caregivers' early perceptions of child unresponsiveness.
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Affiliation(s)
- S L Olson
- Department of Psychology, University of Michigan, Ann Arbor 48109, USA.
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Abstract
OBJECTIVE To determine whether significant differences existed between normal and patient groups on three postural measurements: anterior-posterior total head excursion (THE), resting head posture in sitting (RHPsit), and resting head posture in standing (RHPstd). SUBJECTS Forty-two healthy subjects, 13 men and 29 women between the ages of 20 and 60 years, were matched to 42 patients according to gender and age. DESIGN Measurements of THE, RHPsit, and RHPstd were taken for each subject. Patients were measured during their initial evaluation and had neck pain as a primary or secondary complaint. RESULTS A two-way multivariate analysis of variance followed by two-way analyses of variance showed that normal subjects had a significantly (p<.05) greater THE than did the patients and that men (patients and controls) scored significantly higher (p<.05) than women (patients and controls) on both THE and RHPstd. CONCLUSION Clinical assessment of patients with cervical pain should focus on cervical mobility rather than resting head posture. Head/neck posture is different for males and females and they should not be judged by the same standard.
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Affiliation(s)
- W P Hanten
- School of Physical Therapy, Texas Woman's University, Houston 77030, USA
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Abstract
STUDY DESIGN Descriptive analysis of impairment and disability measures in subjects with neck pain. OBJECTIVES To identify discrete tender points and overall pressure sensitivity and assess relationships among palpation tenderness, active cervical range of motion, visual analog scale pain scores, and Sickness Impact Profile disability scores. BACKGROUND Palpation tenderness and cervical range of motion are used to evaluate patients with neck pain, but their ability to predict patient-perceived pain and disability is unknown. METHODS AND MEASURES We studied 45 women and 15 men with neck pain (mean age, 35 +/- 7 years). Group 1 included 30 persons who had not sought treatment, and group 2 included 30 persons who had just been referred for treatment. RESULTS Subjects demonstrated low mean pressure pain thresholds of tender points (2.3 +/- 1.3 kg). Regression analysis showed that only neck flexion predicted pain (R2 = 0.23), with decreased flexion associated with higher pain levels. Sickness Impact Profile total score was predicted by neck rotation (R2 = 0.31), group (R2 = 0.16), tender point pressure pain threshold (R2 = 0.04), and neck retraction (R2 = 0.03). Decreased neck rotation, neck retraction, and pressure pain thresholds were associated with higher disability. CONCLUSIONS Neither palpation tenderness nor cervical range of motion were strong predictors of pain and disability in subjects with neck pain.
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Affiliation(s)
- S L Olson
- Texas Woman's University, Houston Center 77030, USA.
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Olson SL, Schilling EM, Bates JE. Measurement of impulsivity: construct coherence, longitudinal stability, and relationship with externalizing problems in middle childhood and adolescence. J Abnorm Child Psychol 1999; 27:151-65. [PMID: 10400061 DOI: 10.1023/a:1021915615677] [Citation(s) in RCA: 139] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study focused on the assessment of impulsivity in nonreferred school-aged children. Children had been participants since infancy in the Bloomington Longitudinal Study. Individual differences in impulsivity were assessed in the laboratory when children were 6 (44 boys, 36 girls) and 8 (50 boys, 39 girls) years of age. Impulsivity constructs derived from these assessments were related to parent and teacher ratings of externalizing problems across the school-age period (ages 7-10) and to parent and self-ratings of these outcomes across adolescence (ages 14-17). Consistent with prior research, individual measures of impulsivity factor-analyzed into subdimensions reflecting children's executive control capabilities, delay of gratification, and ability or willingness to sustain attention and compliance during work tasks. Children's performance on the main interactive task index, inhibitory control, showed a signficant level of stability between ages 6 and 8. During the school-age years, children who performed impulsively on the laboratory measures were perceived by mothers and by teachers as more impulsive, inattentive, and overactive than others, affirming the external validity of the impulsivity constructs. Finally, impulsive behavior in the laboratory at ages 6 and 8 predicted maternal and self-ratings of externalizing problem behavior across adolescence, supporting the long-term predictive value of the laboratory-derived impulsivity measures.
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Affiliation(s)
- S L Olson
- Department of Psychology, University of Michigan, Ann Arbor 48109, USA.
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Sorenson MD, Cooper A, Paxinos EE, Quinn TW, James HF, Olson SL, Fleischer RC. Relationships of the extinct moa-nalos, flightless Hawaiian waterfowl, based on ancient DNA. Proc Biol Sci 1999; 266:2187-93. [PMID: 10649633 PMCID: PMC1690346 DOI: 10.1098/rspb.1999.0907] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The extinct moa-nalos were very large, flightless waterfowl from the Hawaiian islands. We extracted, amplified and sequenced mitochondrial DNA from fossil moa-nalo bones to determine their systematic relationships and lend insight into their biogeographical history. The closest living relatives of these massive, goose-like birds are the familiar dabbling ducks (tribe Anatini). Moa-nalos, however, are not closely related to any one extant species, but represent an ancient lineage that colonized the Hawaiian islands and evolved flightlessness long before the emergence of the youngest island, Hawaii, from which they are absent. Ancient DNA yields a novel hypothesis for the relationships of these bizarre birds, whereas the evidence of phylogeny in morphological characters was obscured by the evolutionary transformation of a small, volant duck into a giant, terrestrial herbivore.
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Affiliation(s)
- M D Sorenson
- Molecular Genetics Laboratory, Smithsonian Institution, Washington, DC 20008, USA.
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Abstract
OBJECTIVE To determine the extent to which there may be major differences in scores on a battery of physical performance tasks among men with nonspecific, mechanical low back pain (LBP), women with LBP, healthy men, and healthy women. DESIGN Case series survey. SETTING A referral-based orthopedic clinic. PATIENTS Thirty-three men and 46 women with LBP. Control Subjects: Twenty-one men and 25 women healthy controls. INTERVENTION Completion of six clinician-assessed physical performance tasks and self-report inventories. MAIN OUTCOME MEASURE Performance scores on distance walked in 5 minutes, 50-foot walk at fastest speed, repeated sit-to-stand, repeated trunk flexion, loaded forward reach, and the Sorensen fatigue tasks. RESULTS Discriminant function analysis revealed that the four groups of subjects performed the physical tasks significantly different in two major ways: (1) healthy control subjects outperformed LBP patients, irrespective of gender, on tasks involving trunk control, coordination, and stability while withstanding heavy or quickly changing loads on the spine; (2) men outperformed women, irrespective of patient or nonpatient status, on tasks involving anthropometric features of limb length. The findings provide guidance on reasonable performance expectations for men and women patients with LBP. Future studies of treatment effectiveness also will be able to assess physical performance change in terms of the intersection between standards set by the men and women healthy control subjects and those of men and women patients. However, whether a return to nonpatient status is an appropriate treatment goal is left to future research.
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Affiliation(s)
- D M Novy
- Department of Anesthesiology, University of Texas-Houston Medical School and University Center for Pain Medicine and Rehabilitation at Hermann Hospital 77030, USA
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Simmonds MJ, Olson SL, Jones S, Hussein T, Lee CE, Novy D, Radwan H. Psychometric characteristics and clinical usefulness of physical performance tests in patients with low back pain. Spine (Phila Pa 1976) 1998; 23:2412-21. [PMID: 9836355 DOI: 10.1097/00007632-199811150-00011] [Citation(s) in RCA: 227] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN The psychometric properties and clinical use of a battery of physical performance measures were tested on 44 patients with low back pain and 48 healthy, pain-free control subjects. OBJECTIVES Reliability, validity, and clinical use of nine physical performance measures were evaluated. SUMMARY OF BACKGROUND DATA Although physical performance measures have potential use in evaluation, treatment planning, and determination of treatment outcome, there is sparse systematic investigation of their reliability, validity, and clinical use. METHODS Forty-four subjects with low back pain and 48 healthy pain-free subjects participated. The following physical performance measures were tested: distance walked in 5 minutes; 50-foot walk at fastest speed; 50-foot walk at preferred speed; 5 repetitions of a sit-to-stand task; 10 repetitions of a repeated trunk flexion task; timed up-and-go task; unloaded forward reach task; loaded forward reach task; and Sorensen fatigue test. Subjects were assessed twice on 2 days. RESULTS All measures had excellent intertester reliability (intraclass correlation coefficient [ICC]1,1 > 0.95). Test-retest (within session) reliability was adequate for all measures (ICC1,1 > 0.83) except repeated trunk flexion (ICC1,1 > 0.45) in the low back pain group. Test-retest (day-to-day) reliability ranged between 0.59 and 0.88 in the low back pain group and between 0.46 and 0.76 in the control group. Day-to-day reliability improved when the averages of two trials of repeated trunk flexion and sit-to-stand were used (0.76-0.91 low back pain group and 0.62-0.89 control group). Results of a multivariate analysis of variance showed a significant effect of group (F10,65 = 3.52, P = 0.001). Results of univariate analyses showed significant group differences on all measures except the 50-foot walk at preferred speed and unloaded forward reach. Self-report of disability was moderately correlated with the performance tasks (r = 0.400 to -0.603). CONCLUSIONS The results provide support for the use of these physical performance measures as a complement to patient self-report.
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Affiliation(s)
- M J Simmonds
- School of Physical Therapy, Texas Woman's University, Houston, USA.
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Abstract
Although music therapy in health care settings is not new, bringing live music to the bedside is a new way of extending the caring tradition of nursing practice. Bedside musical care is consistent with a philosophy of holistic nursing practice and can be used during pregnancy, childbirth, and in neonatal care. It is defined as live music at the bedside, which is part of a treatment plan to foster integrity, well-being, and health for varied populations across the life span.
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Abstract
The recombination activating genes RAG-1 and RAG-2 are highly conserved throughout evolution and are necessary and essential for the DNA rearrangement of antigen-receptor gene segments. These convergently transcribed genes are expressed primarily by developing B and T lineage cells. In addition, recent data suggest that the RAG locus can be reactivated in mouse germinal center B cells. Despite these well-defined patterns of expression, little is known about mechanism(s) regulating transcription of the RAG locus. Experiments with a mouse fibroblast line stably transfected with a genomic fragment of the RAG locus suggest that the intergenic region between RAG-1 and RAG-2 may contain information modulating RAG transcription. In order to begin testing this hypothesis, we have sequenced the 7.0-kb RAG intergenic region of the mouse. The sequence did not contain open reading frames larger than 60 amino acids. Analysis with GCG software identified several potential transcription-factor binding sequences within this region. Many of these are associated with transcriptional regulation of the Ig locus.
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Affiliation(s)
- F E Bertrand
- Wellesley Hospital Research Institute and the Department of Immunology, University of Toronto, Ontario, Canada
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Affiliation(s)
- F E Bertrand
- Wellesley Hospital Research Institute and the Department of Immunology, University of Toronto, Ontario, Canada
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Abstract
Wrist orthoses are advocated for patients with lateral epicondylitis on the assumption that use of the orthosis decreases muscle activity of the wrist extensors during activities. The purpose of this study was to compare the amount of electrical activity, root mean square (RMS) calculated from surface EMG recorded over the wrist extensors, during activities when applying four conditions of wrist orthoses: dorsal; volar; semicircular; and no orthosis. Thirteen normal subjects (mean age 27.7 years) performed three lifting and two gripping tasks, repeated on three consecutive days under four orthotic conditions. Measured were RMS and maximum voluntary grip strength. Repeated measures ANOVA's indicated a significant decrease of RMS using the semicircular design during lifting (p < .0005). Grip strength decreased significantly using all three orthotic designs, but RMS recorded during gripping did not. It was concluded that application of a wrist orthosis reduces electrical activity of the wrist extensors less than anticipated and only during lifting.
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Affiliation(s)
- C W Jansen
- University of Texas Medical Branch, Department of Physical Therapy, Galveston 77555-1028, USA.
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Abstract
Examined concurrent and longitudinal relations between different measures of peer neglect in the preschool years. Measures of social competence included peer sociometrics, teacher ratings, and behavioral observations of peer interactions. Participants were sixty 4- to 5-year-old Caucasian boys from low-income family backgrounds. Results indicated that the stability of indicators of peer neglect and social isolation depended on the measure employed. Correlations between different measures suggested heterogeneity in patterns of social adaptation among neglected or isolated preschool children. Results are discussed emphasizing the need to rely on multiple indicators for the assessment of preschool children's social competence.
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Affiliation(s)
- K L Rosenblum
- Center for Human Growth and Development, University of Michigan, USA.
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Olson SL. Chronic renal failure revisited. Am J Nurs 1996; 96:21. [PMID: 8600713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Hall AV, Antoniou H, Wang Y, Cheung AH, Arbus AM, Olson SL, Lu WC, Kau CL, Marsden PA. Structural organization of the human neuronal nitric oxide synthase gene (NOS1). J Biol Chem 1994; 269:33082-90. [PMID: 7528745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Neuronal nitric oxide (NO) synthase, localized to human chromosome 12, uniquely participates in diverse biologic processes; neurotransmission, the regulation of body fluid homeostasis, neuroendocrine physiology, control of smooth muscle motility, sexual function, and myocyte/myoblast biology, among others. Restriction enzyme mapping, subcloning, and DNA sequence analysis of bacteriophage- and yeast artificial chromosome-derived human genomic DNA indicated that the mRNA for neuronal NO synthase is dispersed over a minimum of 160 kilobases of human genomic DNA. Analysis of intron-exon splice junctions predicted that the open reading frame is encoded by 28 exons, with translation initiation and termination in exon 2 and exon 29, respectively. Determination of transcription initiation sites in brain poly(A) RNA with primer extension analysis and RNase protection revealed a major start site 28 nucleotides downstream from a TATA box. Sequence inspection of 5'-flanking regions revealed potential cis-acting DNA elements: AP-2, TEF-1/MCBF, CREB/ATF/c-Fos, NRF-1, Ets, NF-1, and NF-kappa B-like sequences. Diversity appears to represent a major theme apparent upon analysis of human neuronal NO synthase mRNA transcripts. A microsatellite of the dinucleotide variety was detected within the 3'-untranslated region of exon 29. Multiple alleles were evident in normal individuals indicating the existence of allelic mRNA sequence variation. Characterization of variant human neuronal NO synthase cDNAs indicated the existence of casette exon 9/10 and exon 10 deletions as examples of structural mRNA diversity due to alternative splicing. The latter deletion of a 175-nucleotide exon introduces a frame-shift and premature stop codon indicating the potential existence of a novel NH2 terminus protein. In summary, analysis of the human neuronal NO synthase locus reveals a complex genomic organization and mRNA diversity that is both allelic and structural.
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Affiliation(s)
- A V Hall
- Renal Division, St. Michael's Hospital, University of Toronto, Ontario, Canada
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Olson SL, Kieschnick E, Banyard V, Ceballo R. Socioenvironmental and individual correlates of psychological adjustment in low-income single mothers. Am J Orthopsychiatry 1994; 64:317-331. [PMID: 8037240 DOI: 10.1037/h0079511] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Relationships among psychological adjustment, levels of perceived and actual social support, and perceptions of childhood familial adversity were examined among 52 low-income single mothers of preschoolers. Women showing high levels of psychological adjustment tended to perceive their supports more positively, but often reported lower levels of support than their more distressed counterparts. However, perceptions of childhood familial adversity were found to be the most powerful predictors of psychological adjustment.
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Affiliation(s)
- S L Olson
- Department of Psychology, University of Michigan, Ann Arbor
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Abstract
Theory predicts that traits under positive selection can rapidly cross a hybrid zone in spite of a substantial barrier to neutral gene flow between hybridizing taxa. An avian hybrid zone between Manacus candei (white-collared manakin) and M. vitellinus (golden-collared manakin) is reported here that displays an unusual pattern of noncoincident clines. Male secondary sexual traits of M. vitellinus have spread into populations that are genetically and morphometrically like M. candei. These birds have a lek breeding system in which male mating success is highly skewed, suggesting that sexual selection is driving male sexual traits across the zone.
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Abstract
The development of impulsive-aggressive problem behavior and peer rejection was examined in sixty 4- to 5-year-old boys from low-income family backgrounds. Children's sociometric status and behavioral adjustment were assessed longitudinally at the beginning and end of the preschool year, and related to measures of peer interaction at three different points in time. Boys identified as socially rejected and aggressive in the beginning of the year were highly likely to be identified as such at the end of the year. Early in the preschool year, these children contributed to their own rejection by initiating socially aversive exchanges with peers. Although peers clearly perceived these problems, they did not reciprocate with counteraggression at first. However, as time passed, peers began to actively victimize these children, and most of the aggression on the part of victims became reactive in nature. Thus, the current findings strongly support a transactional model of the development of early peer rejection and conduct problems.
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Affiliation(s)
- S L Olson
- Department of Psychology, University of Michigan, Ann Arbor 48109
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Olson SL, Brodfeld PL. Assessment of peer rejection and externalizing behavior problems in preschool boys: a short-term longitudinal study. J Abnorm Child Psychol 1991; 19:493-503. [PMID: 1757714 DOI: 10.1007/bf00919091] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We examined the longitudinal stability of measures of negative peer status and aggressive-disruptive behavior in preschool boys. Subjects were 53 white 4- to 5-year-old boys from low-income family backgrounds. Peer sociometric measures of rejection and behavioral deviance were assessed in the fall and spring of the preschool year. Complementary measures were also obtained from teachers at both assessment points. Half of the boys designated as rejected on the basis of peer nominations maintained this status at the end of the preschool year. Teachers and peers did not agree on their selections of socially rejected children, but had good agreement concerning the identification of children with externalizing-type behavior problems. Finally, teacher and peer classifications of aggressive-disruptive children were highly stable throughout the preschool year. These findings indicate that peer-rejected children can be identified at very young ages, and that preschoolers can be reliable informants about the social maladjustment of peers.
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Affiliation(s)
- S L Olson
- Department of Psychology, University of Michigan, Ann Arbor 48109
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