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Riveros-Perez E, Hermesch A, Barbour L, Hawkins J. Aplastic anemia in two consecutive pregnancies: obstetric and anesthetic management. Int J Obstet Anesth 2017; 33:71-75. [PMID: 29108725 DOI: 10.1016/j.ijoa.2017.08.010] [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: 06/30/2017] [Revised: 08/28/2017] [Accepted: 08/30/2017] [Indexed: 10/18/2022]
Abstract
Aplastic anemia is a serious condition occasionally coexisting with pregnancy. This pathological process is associated with significant maternal and neonatal morbidity and mortality. Obstetric and anesthetic management are particularly challenging, and treatment requires knowledge of pathophysiologic mechanisms in order to provide safe care to this group of patients. We describe the successful obstetric management and labor analgesia of a patient with a diagnosis of aplastic anemia in two consecutive pregnancies.
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Affiliation(s)
- E Riveros-Perez
- Department of Anesthesiology and Perioperative Medicine, Medical College of Georgia at Augusta University, United States.
| | - A Hermesch
- Maternal Fetal Medicine, University of Colorado School of Medicine, United States
| | - L Barbour
- Medicine and Obstetrics and Gynecology, University of Colorado School of Medicine, United States
| | - J Hawkins
- Department of Anesthesiology, Director of Obstetric Anesthesia, University of Colorado School of Medicine, United States
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Affiliation(s)
- N Mody
- King's College Hospital NHS Foundation Trust; London UK
| | - N Perry
- Brighton & Sussex University Hospitals NHS Trust; Brighton UK
- Brighton & Sussex Medical School; Brighton UK
| | - D Richardson
- Brighton & Sussex University Hospitals NHS Trust; Brighton UK
- Brighton & Sussex Medical School; Brighton UK
| | - L Barbour
- Brighton & Sussex University Hospitals NHS Trust; Brighton UK
| | - M Fisher
- Brighton & Sussex University Hospitals NHS Trust; Brighton UK
- Brighton & Sussex Medical School; Brighton UK
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Barbour L. Structure–property relationships of inclusion compounds. Acta Crystallogr A 2011. [DOI: 10.1107/s010876731109979x] [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: 11/11/2022] Open
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du Plessis M, Barbour L. Zero-dimensional coordination compounds incorporating imidazole based ligands. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311090118] [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: 11/10/2022] Open
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Abstract
Dislocation is a common and well-studied complication after total hip replacement. However, subluxation, which we define as a clinically recognised episode of incomplete movement of the femoral head outside the acetabulum with spontaneous reduction, has not been studied previously. Out of a total of 2521 hip replacements performed over 12 years by one surgeon, 30 patients experienced subluxations which occurred in 31 arthroplasties. Data were collected prospectively with a minimum follow-up of two years. Subluxation occurred significantly more frequently after revision than after primary hip replacement, and resolved in 19 of 31 cases (61.3%). In six of the 31 hips (19.4%) the patient subsequently dislocated the affected hip, and in six hips (19.4%) intermittent subluxation continued. Four patients had a revision operation for instability, three for recurrent dislocation and one for recurrent subluxation. Clinical and radiological comparisons with a matched group of stable total hips showed no correlation with demographic or radiological parameters. Patients with subluxing hips reported significantly more concern that their hip would dislocate, more often changed their behaviour to prevent instability and had lower postoperative Harris hip scores than patients with stable replacements.
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Affiliation(s)
- B. J. McGrory
- Orthopaedic Associates of Portland, PA., 33 Sewall Street, PO Box 1260, Portland, Maine 04104-1260, USA
| | - C. P. McGrory
- Orthopaedic Associates of Portland, PA., 33 Sewall Street, PO Box 1260, Portland, Maine 04104-1260, USA
| | - L. Barbour
- Orthopaedic Associates of Portland, PA., 33 Sewall Street, PO Box 1260, Portland, Maine 04104-1260, USA
| | - B. Barbour
- Orthopaedic Associates of Portland, PA., 33 Sewall Street, PO Box 1260, Portland, Maine 04104-1260, USA
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Vo Y, Leitner JW, Barbour L, Friedman J, Draznin B. 149 EFFECT OF GROWTH HORMONE ON EXPRESSION OF P85α AND PHOSPHATIDYLINOSITOL 3-KINASE ACTIVITY IN 3T3-L1 CELLS AND EPIDIDYMAL FAT OF WILD-TYPE AND P85α+/- MICE. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.148] [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: 11/18/2022]
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Vo Y, Leitner J, Barbour L, Friedman J, Draznin B. Effect of Growth Hormone on Expression of P85α and Phosphatidylinositol 3-Kinase Activity in 3T3-L1 Cells and Epididymal Fat of Wild-Type and P85α +/- Mice. J Investig Med 2006. [DOI: 10.1177/108155890605401s33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Y. Vo
- VA Medical Center and University of Colorado Health Sciences Center, Denver, CO
| | - J.W. Leitner
- VA Medical Center and University of Colorado Health Sciences Center, Denver, CO
| | - L. Barbour
- VA Medical Center and University of Colorado Health Sciences Center, Denver, CO
| | - J. Friedman
- VA Medical Center and University of Colorado Health Sciences Center, Denver, CO
| | - B. Draznin
- VA Medical Center and University of Colorado Health Sciences Center, Denver, CO
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Barbour L. RCOG-RCM. A marriage made in heaven? Pract Midwife 2001; 4:41-3. [PMID: 12026639] [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: 02/25/2023]
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Barbour L, Zhu Y, Xiao W. Improving synthetic lethal screens by regulating the yeast centromere sequence. Genome 2000; 43:910-7. [PMID: 11081983] [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: 02/18/2023]
Abstract
The synthetic lethal screen is a useful method in identifying novel genes functioning in an alternative pathway to the gene of interest. The current synthetic lethal screen protocol in yeast is based on a colony-sectoring assay that allows direct visualization of mutant colonies among a large population by their inability to afford plasmid loss. This method demands an appropriate level of stability of the plasmid carrying the gene of interest. YRp-based plasmids are extremely unstable and complete plasmid loss occurs within a few generations. Consequently, YCp plasmids are the vector of choice for synthetic lethal screens. However, we found that the high-level stability of YCp plasmids resulted in a large number of false positives that must be further characterized. In this study, we attempt to improve the existing synthetic lethal screen protocol by regulating the plasmid stability and copy number. It was found that by placing a yeast centromere sequence under the control of either inducible or constitutive promoters, plasmid stability can be significantly decreased. Hence, altering the conditions under which yeast cells carrying the plasmid PGAL1-CEN4 were cultivated allowed us to develop a method that eliminated virtually 100% of false positives and drastically reduced the time required to carry out a synthetic lethal screen.
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Affiliation(s)
- L Barbour
- Department of Microbiology and Immunology, University of Saskatchewan, Saskatoon, Canada
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Powrie RO, Larson L, Rosene-Montella K, Abarca M, Barbour L, Trujillo N. Alveolar-arterial oxygen gradient in acute pulmonary embolism in pregnancy. Am J Obstet Gynecol 1998; 178:394-6. [PMID: 9500505 DOI: 10.1016/s0002-9378(98)80031-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [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: 02/06/2023]
Abstract
OBJECTIVE Our goal was to determine the prevalence of normal alveolar-arterial gradients in pregnant patients with documented pulmonary embolism. STUDY DESIGN A retrospective chart review was performed on all pregnant women with pulmonary embolism at two large obstetric centers between 1990 and 1995. Alveolar-arterial gradients were calculated from room air arterial blood gas values and compared with values from patients who had been established as normal. RESULTS Ten of 17 patients with pulmonary embolism identified had alveolar-arterial gradients that were normal. CONCLUSIONS In our study 58% of pregnant women with documented pulmonary embolism had a normal alveolar-arterial gradient. This markedly differs from the published data in nonpregnant patients, in which the incidence of normal alveolar-arterial gradients in pulmonary embolism has ranged from 1.9% to 20%. This suggests that the alveolar-arterial gradient should not be used to determine the likelihood of pulmonary embolism in pregnant women because this could lead to the withholding of appropriate treatment for this life-threatening condition.
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Affiliation(s)
- R O Powrie
- Department of Medicine, Women and Infants Hospital of Rhode Island and Brown University School of Medicine, Providence 02905-2401, USA
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Rodgers A, Barbour L, Pougnet B, Lombard C, Ryall R. Urinary element concentrations in kidney stone formers and normal controls: the week-end effect. J Trace Elem Electrolytes Health Dis 1994; 8:87-91. [PMID: 7881282] [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] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Early morning urines were collected on each of three days (Monday-Wednesday) from 19 male stone-formers and 20 healthy male controls. Concentrations of 10 elements were determined using inductively coupled plasma atomic emission spectroscopy, graphite furnace atomic absorption spectroscopy and particle induced x-ray emission spectrometry. Data were treated using multivariate statistical methods. The results showed that the concentrations of several elements in the control urines were significantly raised on Mondays and that controls and stone formers differed with respect to certain elements, also on Mondays. The observed elevations were termed the "weekend effect". It is suggested that while stone-formers may regulate their diets throughout the entire week, normals may indulge in dietary excesses over the weekend. The weekend effect highlights the danger of placing too much emphasis on a single measurement of a urinary parameter and alerts investigators to take cognizance of the day on which urine collections are effected, especially when attempting to identify abnormal renal excretion patterns in stone-formers by comparison of their urinary variables with those of controls.
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Affiliation(s)
- A Rodgers
- Department of Chemistry, University of Cape Town, South Africa
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Abstract
The stigma associated with obesity is likely to limit the opportunities obese women have to develop social skills. This hypothesis was tested by having obese (n = 15) and nonobese (n = 22) women converse on the telephone with college students who were unaware of the women's weights. Ratings made by judges who listened to the women's contributions to the conversations but who were unaware of their weights showed that obesity was negatively related to judgments about the women's likability, social skills, and physical attractiveness. The telephone partners of obese women rated the women and themselves more negatively than did the partners of nonobese women. Obese and nonobese women generally did not differ in their evaluations of their own and their telephone partners' behavior, and they also did not differ on a measure of social self-esteem. These findings suggest that there are real differences in the social behavior of obese and nonobese women and that these differences affect the impressions formed by those with whom they interact.
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Affiliation(s)
- C T Miller
- Department of Psychology, University of Vermont, Burlington 05401
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Hagle ME, Barbour L, Flynn B, Kelley C, Trippon M, Braun D, Beschorner J, Boxler J, Henge P, McGuire D. Research collaboration among nurse clinicians. Oncol Nurs Forum 1987; 14:55-9. [PMID: 3697291] [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: 01/07/2023]
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Lobato D, Barbour L, Hall LJ, Miller CT. Psychosocial characteristics of preschool siblings of handicapped and nonhandicapped children. J Abnorm Child Psychol 1987; 15:329-38. [PMID: 2959706 DOI: 10.1007/bf00916453] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.4] [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: 01/03/2023]
Abstract
This project examined psychosocial characteristics of 24 preschool-aged siblings of handicapped children in relation to a control group of 22 siblings of nonhandicapped children. Subjects were matched on family size and income, sibling age, birth order, sex, age spacing, and marital status of their parents. Results indicated no statistically significant differences between groups of children on measures of perceived self-competence and acceptance, understanding of developmental disabilities, empathy, and child care responsibility. Significant group differences were found where brothers of handicapped children were rated by their mothers as being more depressed and aggressive than brothers of nonhandicapped control children. Sisters of handicapped children were rated by mothers as being more aggressive than sisters of nonhandicapped children. Sisters of handicapped children and brothers of nonhandicapped children had significantly fewer privileges and more restrictions on their home activities than other groups. Results are discussed in relation to previous research on older siblings of handicapped children and the general literature on family stress and childhood disability and disease. The importance of examining sibling functioning via multiple measures of child behavior is stressed.
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Affiliation(s)
- D Lobato
- Child Development Center/Rhode Island Hospital, Providence
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McGuire DB, Barbour L, Boxler J, Braun D, Flynn B, Hagle M, Hange P, Kelley C, Trippon M, Bressler L. Fixed-interval v as-needed analgesics in cancer outpatients. J Pain Symptom Manage 1987; 2:199-205. [PMID: 3312426 DOI: 10.1016/s0885-3924(87)80057-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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