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Deshpande S, Smitley L, Carroll M, LaPorte K, Mahle W, Maher K. Milrinone Use for Inotropic Support in Pediatric Acute Heart Failure: Utilization, Safety and Markers of Efficacy. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Dacie R, Howlin R, Carroll M, Connett G. P230 Investigating the role of chest physiotherapy in the collection of sputum samples from individuals with cystic fibrosis (CF). Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kinner SA, Young JT, Carroll M. The pivotal role of primary care in meeting the health needs of people recently released from prison. Australas Psychiatry 2015; 23:650-3. [PMID: 26498149 DOI: 10.1177/1039856215613008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Australia's prison population is growing at a rate well in excess of population growth. Indigenous Australians are over-represented by a factor of 13. Prisoners are a profoundly marginalised group characterised by complex health and social needs. Despite improvements in health during incarceration, poor health outcomes after release are common, and the net effect of incarceration is usually health depleting. Given the need for effective care coordination, primary care plays a pivotal role in meeting the health needs of this population. In this paper we review what is known about patterns of primary care utilisation in ex-prisoners, identify evidence-based strategies for increasing access to primary care in ex-prisoners, and consider how such contact may shape subsequent health service outcomes. CONCLUSIONS Primary care is a necessary but not sufficient condition for effective post-release support. Positive outcomes may depend more on the quality than the quantity of care received. Given massive over-representation of Indigenous people in Australia's prisons, and compelling evidence of preventable morbidity and mortality after release from prison, effective models of care for this population are an important component of closing the gap in Indigenous life expectancy.
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Nybakken GE, Canaani J, Roy D, Morrissette JD, Watt CD, Shah NP, Smith CC, Bagg A, Carroll M, Perl AE. Quizartinib elicits differential responses that correlate with karyotype and genotype of the leukemic clone. Leukemia 2015; 30:1422-5. [PMID: 26585411 DOI: 10.1038/leu.2015.320] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Carroll M, Alqathami M, Blencowe A, Ibbott G. SU-E-T-515: Investigating the Linear Energy Transfer Dependency of Different PRESAGE Formulations in a Proton Beam. Med Phys 2015. [DOI: 10.1118/1.4924877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Sutherland G, Carroll M, Lennox N, Kinner S. Prescribed contraceptives among woman after release from prison. HEALTH & JUSTICE 2015; 3:8. [PMCID: PMC5151522 DOI: 10.1186/s40352-015-0019-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 03/19/2015] [Indexed: 06/09/2023]
Abstract
Background Despite the high rates of unintended and complicated pregnancy among women who have spent time in prison, little is known about their use of prescribed contraceptives post-prison release. We used a routinely-collected medicine utilisation dataset linked to a longitudinal cohort of adults released from prison to describe the dispensing of contraceptive medication. Findings The socio-demographic profiles of women in the cohort were characteristic of justice-involved populations: they were young, poorly educated, unemployed prior to incarceration, with a very high proportion identifying as Indigenous. Dispensing claims data showed that in the six months (180 days) after release from prison contraceptive medication had been dispensed to only 19 women (7.6%). Conclusion Our findings raise important questions about the reproductive health needs of women in prison and after their release. This requires urgent research and policy attention with a particular focus on the potential benefits of attending to women’s sexual and reproductive health care needs in prison in preparation for return to the community.
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Edwards J, Carroll M, Wooster M, Shames M. True extracranial carotid artery aneurysm in a child. J Vasc Surg Cases 2015; 1:110-112. [PMID: 31724569 PMCID: PMC6849925 DOI: 10.1016/j.jvsc.2015.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 03/01/2015] [Indexed: 12/05/2022] Open
Abstract
Isolated true aneurysm of the extracranial carotid artery is a rare entity in the pediatric population, with nine reported cases found in the literature. Contrary to adult carotid aneurysms, which are often due to atherosclerotic disease, pediatric aneurysms are more likely to be the result of congenital malformations, connective tissue diseases, or systemic inflammatory conditions. We present the case of a 10-year-old boy with an isolated true aneurysm of the internal carotid artery and a review of the literature.
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Carroll M. Prevention of mother to child transmission of HIV/AIDS in Northern
Uganda: A community-facility-community pilot project. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Powell A, Wooster M, Carroll M, Cardentey-Oliva D, Cavanagh-Voss S, Armstrong P, Shames M, Illig K, Gabbard W. Long-segment plication technique for arteriovenous fistulae threatened by diffuse aneurysmal degeneration: short-term results. Ann Vasc Surg 2015; 29:1327-31. [PMID: 25770388 DOI: 10.1016/j.avsg.2015.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 02/12/2015] [Accepted: 02/13/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND A substantial number of patients with autologous arteriovenous fistulas (AVFs) develop diffuse aneurysmal degeneration, which frequently interferes with successful access. These AVFs are often deemed unsalvageable. We hypothesize that long-segment plication in these patients can be performed safely with acceptable short-term AVF salvage rates. METHODS We reviewed a prospectively maintained database to identify all patients with extensive AVF aneurysmal disease operated on for this problem. RESULTS Thirty-five patients, 25 (71%) male and 10 (29%) female were operated on between July 2012 and January 2014. AVFs included 23 (66%) brachiocephalic, 5 (14%) radiocephalic, and 7 brachiobasilic (20%) fistulae (one first stage only but in use). The cohort had one or a combination of local pain, arm edema, cannulation issue, recurrent thrombosis, dysfunctional during dialysis, or extreme tortuousity. Time range for AVF creation to consultation ranged from 3 months to 11 years. All underwent long-segment plication over a 20-Fr Bougie with or without segmental vein resection; 3 underwent concomitant first rib resection for costoclavicular stenosis; 21 patients had tunneled catheter placement for use while healing, whereas 13 were allowed segmental use of their AVF during the perioperative period (1 patient was not yet on dialysis). Early in our experience, AVFs were left under the wound, whereas all but one repaired since early 2013 were left under a lateral flap. All patients were followed by clinical examination and duplex. In the 30-day postoperative period, 2 AVFs (5.7%) became infected requiring excision, 2 occluded (5.7%), 1 day 1 and the other at 24 days out, 1 patient developed steal and required DRIL 1 week postoperatively, and 1 patient died, unrelated to his surgery. Postoperative functional primary patency was 88% (30 of 34). Of the patients needing temporary access catheter, mean time to first fistula use was 44 days. No wound or bleeding complications have occurred in repaired AVF left under skin flaps. CONCLUSIONS In this group of patients whose access was threatened by diffuse aneurysmal degeneration, long-segment placation allowed salvage of 88% of fistulae with relatively low morbidity. Fewer complications are associated by covering the revised fistula with intact skin.
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Cristea M, Rivkin S, Lim D, Chung V, Chao J, Wakabayashi M, Paz B, Han E, Lin P, Leong L, Hakim A, Frankel P, Synold T, Carroll M, Openshaw H, Prakash N, Dellinger T, Park M, Morgan R. Phase I Trial of Intraperitoneal Nab-Paclitaxel in the Treatment of Advanced Malignancies Primarily Confined to the Peritoneal Cavity. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu331.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Carroll M, Adamovics J, Mawlawi O, Ibbott G. SU-E-T-230: Measurement of Proton-Activated Positron Emission with PRESAGE 3-D Dosimeters. Med Phys 2014. [DOI: 10.1118/1.4888560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Walshaw M, McElvaney G, Williams R, Morice A, Carroll M, Haworth C, Herzig M, Ketchell I, Myrvold R, Meland N, Myrset A, Smerud K. 45 A first-in-patient clinical trial demonstrates that inhaled alginate oligosaccharide (OligoG) is well tolerated in cystic fibrosis (CF) patients. J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60182-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Carroll M, Kinner SA, Heffernan EB. Medication use and knowledge in a sample of Indigenous and non-Indigenous prisoners. Aust N Z J Public Health 2014; 38:142-6. [DOI: 10.1111/1753-6405.12203] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 11/01/2013] [Accepted: 12/01/2013] [Indexed: 11/28/2022] Open
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Mortimer JE, Colcher D, Frankel P, Raubitschek A, Carroll M, Conti P, Tong S, Poku K, Miles J, Bading J. Abstract P2-03-05: Relationship between 64Cu-DOTA-trastuzumab positron emission tomography uptake and assessment of HER2 by immunohistochemistry in women with advanced breast cancer. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p2-03-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: We have utilized 64Cu-DOTA-trastuzumab with PET imaging to assess the in vivo expression of HER2 in women with advanced breast cancer. We have demonstrated that a preadministered dose of trastuzumab 45 mg prior to injection of 64Cu-DOTA-trastuzumab resulted in a 75% decrease in the hepatic uptake of Cu-64, resulting in improved image quality.
Methods: Patients with biopsy confirmation of recurrent disease located outside the breast and axilla considered for study. Complete staging workup included CT of the chest, abdomen, and pelvis, bone scintigraphy and 18F FDG PET. At least 1 non-hepatic site of metastasis that was > 2 cm separate from the biopsy site was also required. HER2 status was assessed by both IHC and FISH. Index lesions were identified on CT imaging. After the first two patients, all patients received a cold dose of 45mg of trastuzumab immediately prior to 64Cu-DOTA-trastuzumab to decrease liver uptake. 64Cu-DOTA-trastuzumab PET imaging was performed at 24 and 48 hours. Uptake on 64Cu-DOTA-trastuzumab was correlated with HER2 status by IHC and FISH.
Results: Fifteen women have undergone 64Cu-DOTA-trastuzumab PET imaging and quantitative image analysis. 10 patients were HER2+ (7 IHC 3+, 3 IHC 2+/FISH+), 3 patients were IHC 2+/FISH-, and 2 patients were IHC 1+. Tumor uptake by 64Cu-DOTA-trastuzumab PET max SUV was higher in HER2+ positive than HER2- patients (1.9-fold higher on day1, p<0.02, and 1.7-fold higher on day2, p<0.05). However, the lowest max SUV was in a HER2+ patient (HER2 2+/FISH+), demonstrating considerable heterogeneity.
Conclusion: 64Cu-DOTA-trastuzumab PET correlates with HER2+ status. However, due to high within and between patient variability, 64Cu-DOTA-trastuzumab PET imaging could potentially enrich for HER2+ patients that respond to HER2-targeted therapy, and could also suggest some HER2- patients that may benefit from HER2-targeted therapy. This hypothesis needs to be further explored in patients undergoing HER2-targeted therapy. This work was supported by the Department of Defense grant # BC095002.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P2-03-05.
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Scotland S, Saland E, Skuli N, de Toni F, Boutzen H, Micklow E, Sénégas I, Peyraud R, Peyriga L, Théodoro F, Dumon E, Martineau Y, Danet-Desnoyers G, Bono F, Rocher C, Levade T, Manenti S, Junot C, Portais JC, Alet N, Récher C, Selak MA, Carroll M, Sarry JE. Mitochondrial energetic and AKT status mediate metabolic effects and apoptosis of metformin in human leukemic cells. Leukemia 2013; 27:2129-38. [PMID: 23568147 PMCID: PMC10869165 DOI: 10.1038/leu.2013.107] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 03/29/2013] [Accepted: 04/02/2013] [Indexed: 12/16/2022]
Abstract
Previous reports demonstrate that metformin, an anti-diabetic drug, can decrease the risk of cancer and inhibit cancer cell growth. However, its mechanism in cancer cells is still unknown. Metformin significantly blocks cell cycle and inhibits cell proliferation and colony formation of leukemic cells. However, the apoptotic response to metformin varies. Furthermore, daily treatment with metformin induces apoptosis and reduces tumor growth in vivo. While metformin induces early and transient activation of AMPK, inhibition of AMPKα1/2 does not abrogate anti-proliferative or pro-apoptotic effects of metformin. Metformin decreases electron transport chain complex I activity, oxygen consumption and mitochondrial ATP synthesis, while stimulating glycolysis for ATP and lactate production, pentose phosphate pathway for purine biosynthesis, fatty acid metabolism, as well as anaplerotic and mitochondrial gene expression. Importantly, leukemic cells with high basal AKT phosphorylation, glucose consumption or glycolysis exhibit a markedly reduced induction of the Pasteur effect in response to metformin and are resistant to metformin-induced apoptosis. Accordingly, glucose starvation or treatment with deoxyglucose or an AKT inhibitor induces sensitivity to metformin. Overall, metformin elicits reprogramming of intermediary metabolism leading to inhibition of cell proliferation in all leukemic cells and apoptosis only in leukemic cells responding to metformin with AKT phosphorylation and a strong Pasteur effect.
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Williamson B, Howie-Esquivel J, Carroll M, Brinker E, Garbez R, Dracup K. Mortality and Utilization of Palliative Care in Hospitalized Heart Failure Patients. Heart Lung 2013. [DOI: 10.1016/j.hrtlng.2013.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Carroll M, Ibbott G, Gillin M, Adamovics J. SU-E-T-73: Investigation of 3D Dosimetry for Proton Therapy Using PRESAGE. Med Phys 2013. [DOI: 10.1118/1.4814508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Mortimer JE, Conti P, Shan T, Carroll M, Kofi P, Colcher D, Raubitschek AA, Bading JR, Miles J. Abstract P2-05-10: 64Cu-DOTA-trastuzumab positron emission tomography imaging of HER2 in women with advanced breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p2-05-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: We propose to utilize64Cu-DOTA-trastuzumab with PET imaging to assess the in vivo expression of HER2 in women with advanced breast cancer. We hypothesized that the uptake of HER2 in normal tissues compromises the quality of radiographic images and that the pre-administration of trastuzumab prior to injection of64Cu-DOTA-trastuzumab would improve image quality. Two different doses of cold trastuzumab (5 mg and 50 mg) were tested. Once the dose of cold trastuzumab was established in women with documented HER2 positive metastatic disease, we initiated a second study of64Cu-DOTA-trastuzumab PET imaging in women whose cancers were HER2 1+ and 2+ by immunohistochemical staining.
Methods: Patients with biopsy confirmation of recurrent disease located outside the breast and axilla considered for study. Complete staging workup included CT of the chest, abdomen, and pelvis, bone scintigraphy and18F FDG PET. At lease 1 non-hepatic site of metastasis that was > 2 cm separate from the biopsy site was also required. HER2 status was assessed by both IHC and FISH. In the first study all patients were required to have HER2 positive disease and could not have received anti-HER therapy for > 2 months. Immediately prior to injection of64Cu-DOTA-trastuzumab, a cold dose of either 5 mg or 50 mg of trastuzumab was administered.64Cu-DOTA-trastuzumab PET imaging was performed at 24 and 48 hours.
Results: Eight women with HER2 positive metastatic breast cancer have undergone64Cu-DOTA-trastuzumab PET imaging: 2 received a pre-64Cu-DOTA-trastuzumab PET dose of 5 mg trastuzumab and 6 received 50 mg.64Cu-DOTA-trastuzumab PET effectively visualized and provided uptake measurements for presumably HER2+ metastatic lesions in bone, liver, lung and, to a lesser degree, lymph nodes. The 50 mg dose resulted in approximately 75% decrease in liver uptake of64Cu and improved the visualization of hepatic metastasis. We have initiated the second phase of the study utilizing the pre-administration of 50 mg trastuzumab in women with HER2 1+ and 2 + disease. To date we have imaged one patient.
Conclusion:64Cu-DOTA-trastuzumab PET imaging is feasible and image quality is improved with the pre-administration of 50 mg trastuzumab. Enrollment of women with IHC 1+ and 2+ disease continues. This work was supported by the Department of Defense grant # 1024511.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P2-05-10.
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Manchester AC, Hill S, Sabatino B, Armentano R, Carroll M, Kessler B, Miller M, Dogan B, McDonough SP, Simpson KW. Association between granulomatous colitis in French Bulldogs and invasive Escherichia coli and response to fluoroquinolone antimicrobials. J Vet Intern Med 2012. [PMID: 23206120 DOI: 10.1111/jvim.12020] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND French Bulldogs develop a form of granulomatous colitis (GC) with histopathological resemblance to GC of Boxer dogs (GCB). GCB is associated with mucosally invasive Escherichia coli whose eradication correlates with clinical remission. HYPOTHESIS/OBJECTIVES To characterize the clinical and histopathological features, presence or absence of invasive colonic bacteria, and response to fluoroquinolones in French Bulldogs with GC. ANIMALS A total of 6 French Bulldogs with a histological diagnosis of GC. METHODS Retrospective study of medical records. Bacterial colonization was evaluated using 16S rRNA probes for eubacteria and E. coli. Biopsy specimens from 3 dogs were cultured for bacteria. Clinical response to fluoroquinolone antimicrobials was determined. RESULTS All dogs were ≤1 year of age with hematochezia that was refractory to empirical therapy. Clinicopathologic and fecal analysis did not reveal abnormalities. Abdominal ultrasound revealed patchy thickening of the colon in 4/5 dogs and regional lymphadenopathy in 5/5. Colonoscopic abnormalities included irregularly thickened and ulcerated mucosa, hyperemia, and overt bleeding in 4/6 cases. Multifocal accumulations of PAS-positive macrophages and intramucosal E. coli were present in colonic biopsies of all 6 dogs. Administration of enrofloxacin (5/6) or marbofloxacin (1/6) at 4.4-10 mg/kg (median 10 mg/kg) PO q24h for 6-10 weeks was associated with clinical improvement within 5-14 days. All dogs remained in remission over a 3-30 month follow-up period. CONCLUSIONS Granulomatous colitis in young French Bulldogs is associated with the presence of invasive E. coli and closely parallels GCB. Treatment with fluoroquinolone antimicrobials can induce lasting clinical remission.
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Atkinson B, Latham J, Chamberlain J, Logue C, O'Donoghue L, Osborne J, Carson G, Brooks T, Carroll M, Jacobs M, Hopkins S, Hewson R. Sequencing and phylogenetic characterisation of a fatal Crimean - Congo haemorrhagic fever case imported into the United Kingdom, October 2012. Euro Surveill 2012; 17:20327. [PMID: 23218389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
A patient with fever, and haemorrhagic symptoms was admitted to a hospital in Glasgow on 2 October 2012. Since he had returned from Afghanistan, serum samples were sent for diagnosis at the Rare and Imported Pathogens Laboratory, where a real-time reverse transcriptase-PCR diagnosis of Crimean – Congo haemorrhagic fever was made within 3 hrs after receipt of the sample. Hereafter the patient was transferred to a high-security infectious diseases unit in London but died on 6 October.
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Atkinson B, Latham J, Chamberlain J, Logue C, O'Donoghue L, Osborne J, Carson G, Brooks T, Carroll M, Jacobs M, Hopkins S, Hewson R. Sequencing and phylogenetic characterisation of a fatal Crimean – Congo haemorrhagic fever case imported into the United Kingdom, October 2012. Euro Surveill 2012. [DOI: 10.2807/ese.17.48.20327-en] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Sugita M, Kalota A, Gewirtz AM, Carroll M. Eltrombopag inhibition of acute myeloid leukemia cell survival does not depend on c-Mpl expression. Leukemia 2012. [PMID: 23183425 DOI: 10.1038/leu.2012.310] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lee DW, Futami M, Carroll M, Feng Y, Wang Z, Fernandez M, Whichard Z, Chen Y, Kornblau S, Shpall EJ, Bueso-Ramos CE, Corey SJ. Loss of SHIP-1 protein expression in high-risk myelodysplastic syndromes is associated with miR-210 and miR-155. Oncogene 2012; 31:4085-94. [PMID: 22249254 DOI: 10.1038/onc.2011.579] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The myelodysplastic syndromes (MDSs) comprise a group of disorders characterized by multistage progression from cytopenias to acute myeloid leukemia (AML). They display exaggerated apoptosis in early stages, but lose this behavior during evolution to AML. The molecular basis for loss of apoptosis is unknown. To investigate this critical event, we analyzed phosphatidylinositol (PI) 3'kinase signaling, implicated as a critical pathway of cell survival control in epithelial and hematological malignancies. PI 3'kinase activates Akt through its production of 3' phosphoinositides. In turn, the phosphoinositides are dephosphorylated by two lipid phosphatases, PTEN and SHIP-1, in myeloid cells. We studied primary MDS-enriched bone marrow cells and bone marrow sections by western blotting, immunohistochemistry, immunocytochemistry and quantitative PCR for components of the SHIP/PTEN/PI 3'kinase signaling circuit. We reported constitutively activated Akt, variable levels of PTEN and uniformly decreased SHIP-1 expression in MDS progenitor cells. Overexpression of SHIP-1, but not the phosphatase-deficient form, inhibited myeloid leukemic growth. Levels of microRNA (miR)-210 and miR-155 transcripts, which target SHIP-1, were increased in CD34(+) MDS cells compared with their normal counterparts. Direct binding of miR-210 to the 3' untranslated region of SHIP-1 was confirmed by luciferase reporter assay. Transfection of a myeloid cell line with miR-210 resulted in loss of SHIP-1 protein expression. These data suggest that miR-155 and miR-210/SHIP-1/Akt pathways could serve as clinical biomarkers for disease progression, and that miR-155 and miR-210 might serve as novel therapeutic targets in MDS.
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O'Driscoll M, Pearson C, Arden N, Carroll M, Daniels T, Nightingale J. WS13.5 Effectiveness of a high-dose vitamin D supplementation regimen. J Cyst Fibros 2012. [DOI: 10.1016/s1569-1993(12)60095-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Carroll M, O'Connor R. Storage of schedule 2 controlled drugs by general practitioners in the HSE West region. IRISH MEDICAL JOURNAL 2012; 105:187-188. [PMID: 22973662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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