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Han HR, Miller HN, Nkimbeng M, Budhathoki C, Mikhael T, Rivers E, Gray J, Trimble K, Chow S, Wilson P. Trauma informed interventions: A systematic review. PLoS One 2021; 16:e0252747. [PMID: 34157025 PMCID: PMC8219147 DOI: 10.1371/journal.pone.0252747] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 05/23/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Health inequities remain a public health concern. Chronic adversity such as discrimination or racism as trauma may perpetuate health inequities in marginalized populations. There is a growing body of the literature on trauma informed and culturally competent care as essential elements of promoting health equity, yet no prior review has systematically addressed trauma informed interventions. The purpose of this study was to appraise the types, setting, scope, and delivery of trauma informed interventions and associated outcomes. METHODS We performed database searches- PubMed, Embase, CINAHL, SCOPUS and PsycINFO-to identify quantitative studies published in English before June 2019. Thirty-two unique studies with one companion article met the eligibility criteria. RESULTS More than half of the 32 studies were randomized controlled trials (n = 19). Thirteen studies were conducted in the United States. Child abuse, domestic violence, or sexual assault were the most common types of trauma addressed (n = 16). While the interventions were largely focused on reducing symptoms of post-traumatic stress disorder (PTSD) (n = 23), depression (n = 16), or anxiety (n = 10), trauma informed interventions were mostly delivered in an outpatient setting (n = 20) by medical professionals (n = 21). Two most frequently used interventions were eye movement desensitization and reprocessing (n = 6) and cognitive behavioral therapy (n = 5). Intervention fidelity was addressed in 16 studies. Trauma informed interventions significantly reduced PTSD symptoms in 11 of 23 studies. Fifteen studies found improvements in three main psychological outcomes including PTSD symptoms (11 of 23), depression (9 of 16), and anxiety (5 of 10). Cognitive behavioral therapy consistently improved a wide range of outcomes including depression, anxiety, emotional dysregulation, interpersonal problems, and risky behaviors (n = 5). CONCLUSIONS There is inconsistent evidence to support trauma informed interventions as an effective approach for psychological outcomes. Future trauma informed intervention should be expanded in scope to address a wide range of trauma types such as racism and discrimination. Additionally, a wider range of trauma outcomes should be studied.
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Affiliation(s)
- Hae-Ra Han
- School of Nursing, The Johns Hopkins University, Baltimore, Maryland, United States of America
- Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Hailey N. Miller
- School of Nursing, Duke University, Durham, North Carolina, United States of America
| | - Manka Nkimbeng
- School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Chakra Budhathoki
- School of Nursing, The Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Tanya Mikhael
- School of Nursing, The Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Emerald Rivers
- School of Nursing, The Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Ja’Lynn Gray
- School of Nursing, The Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Kristen Trimble
- School of Nursing, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Sotera Chow
- Medstar Good Samaritan Hospital, Baltimore, Maryland, United States of America
| | - Patty Wilson
- School of Nursing, The Johns Hopkins University, Baltimore, Maryland, United States of America
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Hughes V, Chow S, Flanagan ED. Air Force Executive Nurse Leadership Impact: Brigadier General Diann Hale O'Connor, Air Force Nurse Corps Chief From 1982 to 1985. Mil Med 2021; 187:e480-e485. [PMID: 33566100 DOI: 10.1093/milmed/usab045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/21/2021] [Accepted: 01/29/2021] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION In the 1980s, nurses became more recognized as interprofessional healthcare partners who actively participated in the advancement of patient care and the nursing profession. There is a significant gap in the nursing literature about the significant contributions of executive military nurse leaders. The purpose of the interview with Brigadier General (Brig Gen) Hale O'Connor was to explore the personal stories, experiences, leadership strategies, lessons learned, and impact of her leadership on the future development of nursing as a profession. METHODS The oral history method provided a framework for the interview and the analysis. In compliance with the Oral History Association guidelines, the primary investigator obtained Institutional Review Board permission, participant informed consent, and an audiotaped interview. A graduate research assistant transcribed the 3-hour audiotaped interview verbatim. The participant reviewed the transcription, provided clarification, and validated accuracy. Three independent coders extracted prevalent themes and subthemes during analysis. Researchers compared findings and reached a consensus when resolving minor discrepancies. RESULTS Two broad thematic qualities, commitment to duty and fairness, emerged from the data with their respective subthemes. Subthemes of trust, patriotism, loyalty, and assiduousness supported the main theme of commitment to duty. Pillars of alignment, equality, and advocacy supported the broad theme of fairness. CONCLUSION Although the team did not use the Reina Trust Model as a framework, the trust-building behaviors emerged from the transcribed interview during the analysis. Surprisingly, many of the leadership strategies utilized by Brig Gen Hale O'Connor fit well into the Reina Trust Model, published 25 years following O'Connor's tenure as Chief, Air Force Nurse Corps. In addition, several of Brig Gen Hale O'Connor's leadership accomplishments are still relevant today, solidifying the observation that the foresight of Brig Gen Hale O'Connor was fundamental to the advancement of nursing during her tenure and for those who followed.
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Affiliation(s)
- Vickie Hughes
- School of Nursing, Johns Hopkins University, Baltimore, MD 21205-2110, USA
| | - Sotera Chow
- School of Nursing, Johns Hopkins University, Baltimore, MD 21205-2110, USA
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Chow S, Eggold J, Levy K, Wang J, Manjappa R, Dorigo O, Loo B, Rankin E. Combination total abdominal ultra-rapid flash irradiation and PD-1 inhibition provides enhanced tumor burden control in a preclinical ovarian cancer model. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.102] [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: 12/01/2022]
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Chow S, Liao C, Mann A, Dorigo O, Litkouhi B, Lai K, Kapp D, Chan J. Uterine clear cell carcinoma risk in Asian subpopulations. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Han HR, Gleason KT, Sun CA, Miller HN, Kang SJ, Chow S, Anderson R, Nagy P, Bauer T. Using Patient Portals to Improve Patient Outcomes: Systematic Review. JMIR Hum Factors 2019; 6:e15038. [PMID: 31855187 PMCID: PMC6940868 DOI: 10.2196/15038] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/23/2019] [Accepted: 08/31/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND With the advent of electronic health record (EHR) systems, there is increasing attention on the EHR system with regard to its use in facilitating patients to play active roles in their care via secure patient portals. However, there is no systematic review to comprehensively address patient portal interventions and patient outcomes. OBJECTIVE This study aimed to synthesize evidence with regard to the characteristics and psychobehavioral and clinical outcomes of patient portal interventions. METHODS In November 2018, we conducted searches in 3 electronic databases, including PubMed, EMBASE, and Cumulative Index to Nursing and Allied Health Literature, and a total of 24 articles met the eligibility criteria. RESULTS All but 3 studies were conducted in the United States. The types of study designs varied, and samples predominantly involved non-Hispanic white and highly educated patients with sizes ranging from 50 to 22,703. Most of the portal interventions used tailored alerts or educational resources tailored to the patient's condition. Patient portal interventions lead to improvements in a wide range of psychobehavioral outcomes, such as health knowledge, self-efficacy, decision making, medication adherence, and preventive service use. Effects of patient portal interventions on clinical outcomes including blood pressure, glucose, cholesterol, and weight loss were mixed. CONCLUSIONS Patient portal interventions were overall effective in improving a few psychological outcomes, medication adherence, and preventive service use. There was insufficient evidence to support the use of patient portals to improve clinical outcomes. Understanding the role of patient portals as an effective intervention strategy is an essential step to encourage patients to be actively engaged in their health care.
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Affiliation(s)
- Hae-Ra Han
- The Johns Hopkins University, School of Nursing, Baltimore, MD, United States
- The Johns Hopkins University, Center for Cardiovascular and Chronic Care, Baltimore, MD, United States
- The Johns Hopkins University, Center for Community Innovation and Scholarship, Baltimore, MD, United States
| | - Kelly T Gleason
- The Johns Hopkins University, School of Nursing, Baltimore, MD, United States
| | - Chun-An Sun
- The Johns Hopkins University, School of Nursing, Baltimore, MD, United States
| | - Hailey N Miller
- The Johns Hopkins University, School of Nursing, Baltimore, MD, United States
| | - Soo Jin Kang
- Daegu University, Department of Nursing, Daegu, Republic of Korea
| | - Sotera Chow
- The Johns Hopkins University, School of Nursing, Baltimore, MD, United States
| | - Rachel Anderson
- The Johns Hopkins University, School of Nursing, Baltimore, MD, United States
| | - Paul Nagy
- The Johns Hopkins University, School of Medicine, Baltimore, MD, United States
| | - Tom Bauer
- The Johns Hopkins Hospitals and Health System, Baltimore, MD, United States
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Delva S, Nkimbeng M, Chow S, Renda S, Han HR, D'Aoust R. Views of regulatory authorities on standards to assure quality in online nursing education. Nurs Outlook 2019; 67:747-759. [DOI: 10.1016/j.outlook.2019.06.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 05/15/2019] [Accepted: 06/21/2019] [Indexed: 11/28/2022]
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Olsson-Brown A, Guinan T, McKay M, Thurston K, Chow S, Lord R, Sacco J. Implementation of a dedicated immuno-oncology toxicity service reduces the acute impact of immune-related adverse events. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.130] [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: 11/15/2022] Open
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Chow S, Gunnison K, Tucker L, Pruett K. Topical vaginal estrogen use and risk of endometrial hyperplasia or cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.03.234] [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: 10/26/2022]
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Chow S, Chan J, Kapp D, Mann A, Liao C. Racial and regional disparities and outcomes of stage II endometrial cancer patients after robotic surgery. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.281] [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: 10/26/2022]
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Chow S, Chan J, Delic L, Kapp D, Mann A, Liao C. Adjuvant chemotherapy and radiation improve survival of surgical stage I uterine clear cell carcinoma patients. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.475] [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: 10/26/2022]
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Olsson-Brown A, Guinan T, McKay M, Chow S, Lord R, Pirmohamed M, Sacco J. The unexpected challenges of immunotherapy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy486.010] [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: 11/14/2022] Open
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Anderson H, Daheron L, Savvidis G, Negre H, Nag A, Thorner A, Liu X, Gu S, Hu X, Kelley M, Chow S, Daley H, Manduke R, Hwa A, Pagliuca F, Ritz J. Safety considerations in the generation of clinical grade autologous ips cell lines. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.044] [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: 10/17/2022]
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Negre H, Pinte L, Manduke R, Cunningham A, Anderson H, Richard S, Khelladi R, Mai J, Chow S, Kelley M, Daley H, Sturtevant O, Nikiforow S, Ritz J. Personnel environmental monitoring during manufacture of manipulated cell therapy products. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.192] [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: 10/17/2022]
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Abstract
The first conception outside of the human body that led to the birth of Louise Brown was a tremendous accomplishment, which opened the door to the utilization of assisted reproductive techniques globally. This brought the understanding that accomplishing life in a dish required several steps, the most obvious being the timing and characteristics of fertilization. It soon became obvious in the 1980s that the most disappointing phenomenon was unexpected and complete fertilization failure. Among the approaches that were attempted to treat male factor infertility, ICSI surfaced as the technique that brought the ratio of the gametes to 1:1 and was also able to grant consistent fertilization and a higher pregnancy rate. ICSI has now been implemented for a quarter of a century, proving itself as the ultimate technique utilizing ejaculated spermatozoa independent of the semen parameters and is the sole insemination method to be used with surgically retrieved spermatozoa. There are currently various indications for ICSI that are widely adopted, rendering it the most popular insemination method worldwide. The reliability of ICSI ensures its employment in upcoming techniques involving in vitro spermatogenesis and neogametogenesis.
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Affiliation(s)
- C L O'Neill
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - S Chow
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - Z Rosenwaks
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - G D Palermo
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
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Palermo GD, O'Neill CL, Chow S, Cheung S, Parrella A, Pereira N, Rosenwaks Z. Intracytoplasmic sperm injection: state of the art in humans. Reproduction 2017; 154:F93-F110. [PMID: 29158352 PMCID: PMC5719728 DOI: 10.1530/rep-17-0374] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 11/09/2017] [Accepted: 11/20/2017] [Indexed: 12/31/2022]
Abstract
Among infertile couples, 25% involve both male and female factors, while male factor alone accounts for another 25% due to oligo-, astheno-, teratozoospermia, a combination of the three, or even a complete absence of sperm cells in the ejaculate and can lead to a poor prognosis even with the help of assisted reproductive technology (ART). Intracytoplasmic sperm injection (ICSI) has been with us now for a quarter of a century and in spite of the controversy generated since its inception, it remains in the forefront of the techniques utilized in ART. The development of ICSI in 1992 has drastically decreased the impact of male factor, resulting in millions of pregnancies worldwide for couples who, without ICSI, would have had little chance of having their own biological child. This review focuses on the state of the art of ICSI regarding utility of bioassays that evaluate male factor infertility beyond the standard semen analysis and describes the current application and advances in regard to ICSI, particularly the genetic and epigenetic characteristics of spermatozoa and their impact on reproductive outcome.
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Affiliation(s)
- G D Palermo
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - C L O'Neill
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - S Chow
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - S Cheung
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - A Parrella
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - N Pereira
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
| | - Z Rosenwaks
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell Medicine, New York, New York, USA
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Chow S, Kurogi H, Yamamoto T, Tomoda T, Mochioka N, Shirotori F, Yoshinaga T, Ambe D, Okazaki M, Nagai S, Yanagimoto T. Reproductive isolation between sympatric Anguilla japonica and Anguilla marmorata. J Fish Biol 2017; 91:1517-1525. [PMID: 28990671 DOI: 10.1111/jfb.13483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 09/11/2017] [Indexed: 06/07/2023]
Abstract
Species-specific restriction fragment length polymorphism in the intron of the androgen receptor gene (ar5) was found in glass to silver-stage individuals of Anguilla japonica (n = 51) and A. marmorata (n = 21). The sequence analysis of 16S rDNA from 328 anguillid leptocephali collected in the North Equatorial Current of the western North Pacific Ocean revealed the specimens to be A. japonica (n = 194), A. marmorata (n = 128), A. bicolor pacifica (n = 5) and A. luzonensis (n = 1). All leptocephali of A. japonica and A. marmorata were monomorphic and did not share an allele at the ar5 locus, indicating that the two species are reproductively isolated.
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Affiliation(s)
- S Chow
- National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Yokohama, Kanagawa, 236-8648, Japan
| | - H Kurogi
- Yokosuka Laboratory, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 6-3-1, Nagai, Kanagawa, 238-0316, Japan
| | - T Yamamoto
- Yokosuka Laboratory, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 6-3-1, Nagai, Kanagawa, 238-0316, Japan
| | - T Tomoda
- National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, 205 Natsui, Shibushi, Kagoshima, 899-7101, Japan
| | - N Mochioka
- Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812-8581, Japan
| | - F Shirotori
- School of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa, 252-0373, Japan
| | - T Yoshinaga
- School of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa, 252-0373, Japan
| | - D Ambe
- National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Yokohama, Kanagawa, 236-8648, Japan
| | - M Okazaki
- National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Yokohama, Kanagawa, 236-8648, Japan
| | - S Nagai
- National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Yokohama, Kanagawa, 236-8648, Japan
| | - T Yanagimoto
- National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Yokohama, Kanagawa, 236-8648, Japan
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Chow S, Leach R, Mitchell C. Non-elective admissions in cancer care - A review of acute oncology services (AOS) implementation in a north-west region of England. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx375.020] [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: 11/12/2022] Open
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Parrella A, O'Neill C, Chow S, Goldstein M, Rosenwaks Z, Palermo G. Sperm source influences the extent of DNA fragmentation and shapes reproductive outcome. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Parrella A, Chow S, Cheung S, O'Neill C, Rosenwaks Z, Palermo G. Proportional oocyte nuclear maturation in relation to ICSI outcome. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.441] [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: 10/18/2022]
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Chow S, Galvis V, Pillai M, Leach R, Keene E, Spencer-Shaw A, Shablak A, Shanks J, Liptrot T, Thistlethwaite F, Hawkins RE. High-dose interleukin2 - a 10-year single-site experience in the treatment of metastatic renal cell carcinoma: careful selection of patients gives an excellent outcome. J Immunother Cancer 2016; 4:67. [PMID: 27777776 PMCID: PMC5067981 DOI: 10.1186/s40425-016-0174-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 10/07/2016] [Indexed: 01/05/2023] Open
Abstract
Background VEGF-targeted therapy has become the mainstay of treatment for majority of mRCC patients. For most patients, benefit is short-lived and therefore treatment remains palliative in intent. HD IL2 is an effective immunotherapy treatment capable of durable remission in some patients but its unselected use has been difficult due to its modest response rate and considerable adverse effects. Using set pathology criteria as a selection tool in clinical practice, we have been able to show improved outcomes in our previous report. Here, we present an updated and extended report of this treatment and seek to explore any pathological, clinical and treatment variables likely to predict better outcomes. Methods This is an extension of a previously reported clinical audit, which includes mRCC cases treated with HD IL2 between 2003 and 2013. Since 2006, tumour specimens of potential candidates were routinely reviewed prospectively and stratified into Favourable or Other categories based on constitution of histological growth pattern, namely alveolar or solid versus papillary and/or sarcomatoid architecture; clear cell versus granular cell cytoplasmic morphology. HD IL2 was preferentially offered to patients with Favourable pathology. Outcome evaluation includes response rates, survival, and treatment tolerance. Multivariate analysis was performed to explore potential prognostic and predictive factors. Results Among prospectively selected patients with Favourable pathology (n = 106), overall response rate was 48.1 % (51/106) with CR rate of 21.6 % (23/106). Median OS was 58.1 months. Factors associated with significantly better response and/or survival includes favourable pathology pattern, higher cycle 1 tolerance and lower number of metastatic organ sites (<3). CAIX (Carbonic anhydrase 9) has prognostic value but is not predictive of response. Toxicities were those expected of IL2 but were manageable on general medical wards, with no treatment-related death. Importantly most complete responses were durable with 76 % (23/30) cases remained relapse-free (median 39 months follow up) and 2 of the seven who relapsed had had long-term disease free survival after resection of oligometastatic relapse. Conclusions Our experience shows that HD IL2 remains an effective and safe treatment in well-selected cases of mRCC. The result in this single-institution patient series confirms similar outcomes to our previously reported retrospective series. Given the prospect of long-term remission, fit patients with Favourable histology and low disease burden should be considered for HD IL2 in an experienced centre. Better understanding has been gained from this in-depth analysis especially the examination of possible response predictors and strategies that can improve treatment outcome. Electronic supplementary material The online version of this article (doi:10.1186/s40425-016-0174-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- S Chow
- The Christie NHS Foundation Trust, Manchester, UK
| | - V Galvis
- The Christie NHS Foundation Trust, Manchester, UK
| | - M Pillai
- The Christie NHS Foundation Trust, Manchester, UK
| | - R Leach
- The Christie NHS Foundation Trust, Manchester, UK
| | - E Keene
- The Christie NHS Foundation Trust, Manchester, UK ; The University of Manchester, Manchester, UK
| | | | - A Shablak
- The Christie NHS Foundation Trust, Manchester, UK
| | - J Shanks
- The Christie NHS Foundation Trust, Manchester, UK
| | - T Liptrot
- The Christie NHS Foundation Trust, Manchester, UK
| | | | - R E Hawkins
- The Christie NHS Foundation Trust, Manchester, UK ; The University of Manchester, Manchester, UK ; The Christie Clinic, Manchester, UK
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Chow S, Yanagimoto T, Kurogi H, Appleyard SA, Pogonoski JJ. A giant anguilliform leptocephalus Thalassenchelys foliaceus Castle & Raju is a junior synonym of Congriscus maldivensis (Norman 1939). J Fish Biol 2016; 89:2203-2211. [PMID: 27511812 DOI: 10.1111/jfb.13111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 07/12/2016] [Indexed: 06/06/2023]
Abstract
A single specimen of giant leptocephalus Thalassenchelys foliaceus Castle & Raju 1975 was caught in subtropical waters of the western North Pacific Ocean. Mitochondrial coI gene sequence divergence between T. foliaceus and Congriscus maldivensis (Norman 1939) was 0·64 ± 0·27% (mean ± s.e.), and the myomere and vertebral counts of these species were similar, indicating T. foliaceus is a junior synonym of C. maldivensis.
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Affiliation(s)
- S Chow
- National Research Institute of Fisheries Science, 2-12-4 Fukuura, Kanagawa 236-8648, Japan.
| | - T Yanagimoto
- National Research Institute of Fisheries Science, 2-12-4 Fukuura, Kanagawa 236-8648, Japan
| | - H Kurogi
- National Research Institute of Fisheries Science, 6-3-1 Nagai, Kanagawa 238-0316, Japan
| | - S A Appleyard
- Australian National Fish Collection, National Research Collections Australia, Commonwealth Scientific and Industrial Research Organisation (CSIRO), GPO Box 1538, Hobart, Tasmania, 7001, Australia
| | - J J Pogonoski
- Australian National Fish Collection, National Research Collections Australia, Commonwealth Scientific and Industrial Research Organisation (CSIRO), GPO Box 1538, Hobart, Tasmania, 7001, Australia
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Artz AS, Chow S. Hematopoietic cell transplantation in older adults: deciding or decision-making? Bone Marrow Transplant 2016; 51:643-4. [PMID: 27042839 DOI: 10.1038/bmt.2016.86] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 02/25/2016] [Accepted: 02/26/2016] [Indexed: 11/09/2022]
Affiliation(s)
- A S Artz
- Department of Medicine, University of Chicago, Section of Hematology/Oncology, Chicago, IL, USA
| | - S Chow
- Department of Medicine, University of Chicago, Section of Geriatrics and Palliative Medicine, Chicago, IL, USA
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Okazaki S, Manabe H, Omatsu T, Tsuchiaka S, Yamamoto T, Chow S, Shibuno T, Watanabe K, Ono S, Kuwada H, Mizutani T. Detection of Japanese eel endothelial cells-infecting virus (JEECV) in the Japanese eel Anguilla japonica (Temminck & Schlegel), living in natural habitats. J Fish Dis 2015; 38:849-852. [PMID: 25117695 DOI: 10.1111/jfd.12294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/23/2014] [Accepted: 06/30/2014] [Indexed: 06/03/2023]
Affiliation(s)
- S Okazaki
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - H Manabe
- National Research Institute of Aquaculture, Fisheries Research Agency, Kanagawa, Japan
| | - T Omatsu
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - S Tsuchiaka
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - T Yamamoto
- National Research Institute of Aquaculture, Fisheries Research Agency, Kanagawa, Japan
| | - S Chow
- National Research Institute of Fisheries Science, Fisheries Research Agency, Kanagawa, Japan
| | - T Shibuno
- National Research Institute of Aquaculture, Fisheries Research Agency, Kanagawa, Japan
| | - K Watanabe
- National Research Institute of Aquaculture, Fisheries Research Agency, Kanagawa, Japan
| | - S Ono
- School of Marine Science and Technology, Tokai University, Shizuoka, Japan
| | - H Kuwada
- National Research Institute of Aquaculture, Fisheries Research Agency, Kanagawa, Japan
| | - T Mizutani
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Burt T, Wu H, Layton A, Rouse D, Chin B, Hawk T, Weitzel D, Cohen-Wolkowiez M, Chow S, Noveck R. Intra-Arterial Microdosing (IAM), a novel Drug development approach, proof of concept in Rats. Clin Ther 2015. [DOI: 10.1016/j.clinthera.2015.05.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Evans M, Chow S, Galvis V, Leach R, Keene E, Spencer-Shaw A, Shablak A, Shanks J, Thistlethwaite F, Hawkins R. Evaluating the Place of Interleukin-2 in the Management of Metastatic Renal Cell Cancer (MRCC) in the Era of Targeted Therapy. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu466.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Chow S, Dale W, Buesing K, Reynolds V, Paloma M, Bishop M, Artz A. Initial experience of a comprehensive geriatric assessment (CGA) before allogeneic hematopoietic cell transplantation (HCT) for patients 60years and older. J Geriatr Oncol 2014. [DOI: 10.1016/j.jgo.2014.09.083] [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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Chow S, Galvis V, Evans M, Chan K, Spencer-Shaw A, Leach R, Keene E, Shablak A, Shanks J, Thistlethwaite F, Hawkins R. High-Dose Interleukin-2 (Hd Il2) Armed with Pathology-Based Selection Criteria: a Real Option in Treatment of Metastatic Renal Cell Carcinoma (Mrcc) After Targeted Therapy. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu337.39] [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: 11/14/2022] Open
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Dey-Rao R, Smith J, Chow S, Sinha A. Differential gene expression analysis in CCLE lesions provides new insights regarding the genetics basis of skin vs. systemic disease. Genomics 2014; 104:144-55. [DOI: 10.1016/j.ygeno.2014.06.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/15/2014] [Indexed: 01/06/2023]
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Wakabayashi T, Suzuki N, Sakai M, Ichii T, Chow S. Phylogenetic relationships among the family Ommastrephidae (Mollusca: Cephalopoda) inferred from two mitochondrial DNA gene sequences. Mar Genomics 2012; 7:11-6. [PMID: 22897957 DOI: 10.1016/j.margen.2012.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 04/03/2012] [Accepted: 04/17/2012] [Indexed: 11/15/2022]
Abstract
Squids of the family Ommastrephidae are distributed worldwide, and the family includes many species of commercial importance. To investigate phylogenetic relationships among squid species of the family Ommastrephidae, partial nucleotide sequences of two mitochondrial gene loci (cytochrome c oxidase subunit I [1277bp] and 16S rRNA [443bp]) of 15 ommastrephid species and two outgroup species from the families Loliginidae and Enoploteuthidae were determined and used to construct parsimony and distance based phylogenetic trees. The molecular data provided several new phylogenetic inferences. The monophyletic status of three subfamilies (Illicinae, Todarodinae and Ommastrephinae) was well supported, although phylogenetic relationships between the subfamilies were not resolved. Inclusion of a problematic species, Ornithoteuthis volatilis, to Todarodinae was indicated. Within Todarodinae, the Japanese common squid Todarodes pacificus was observed to have much closer relationship to the species of the genus Nototodarus than to its congener (Todarodes filippovae). These results indicate that re-evaluation of several morphological key characters for ommastrephid taxonomy may be necessary.
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Affiliation(s)
- T Wakabayashi
- National Research Institute of Far Seas Fisheries, Japan.
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Brandwein JM, Hedley DW, Chow S, Schimmer AD, Yee KWL, Schuh AC, Gupta V, Xu W, Kamel-Reid S, Minden MD. A phase I/II study of imatinib plus reinduction therapy for c-kit-positive relapsed/refractory acute myeloid leukemia: inhibition of Akt activation correlates with complete response. Leukemia 2011; 25:945-52. [PMID: 21403650 DOI: 10.1038/leu.2011.34] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
This phase I/II study evaluated imatinib as a c-kit inhibitor combined with mitoxantrone, etoposide and cytarabine therapy for patients with primary refractory or relapsed c-kit+ acute myeloid leukemia (AML). Imatinib was escalated through three dose levels in successive six patient cohorts. The combination was well tolerated up to 400 mg/day imatinib. Of 21 patients treated at this dose, 13 (62%) achieved complete response (CR), 7 (33%) were non-responders and one died during induction. The CR rate was 80% in patients with standard-risk karyotype versus 33% in patients with adverse karyotype. The CR rate for primary non-responders was 6/14 (43%) versus 7/7 (100%) for relapsed patients. AML blasts from peripheral blood were assayed for phosphorylated Akt (pAkt) and phosphorylated ERK (pERK) by flow cytometry before to and after imatinib dosing. Of eight patients achieving CR with reinduction, seven demonstrated marked (≥60%) pAkt inhibition with imatinib therapy. In contrast, all the six non-responders to reinduction demonstrated <60% pAkt inhibition (P=0.005). There was no correlation between pERK inhibition and response to therapy. These results indicate that lack of pAkt inhibition in vivo is associated with resistance to reinduction therapy using this regimen. Further studies using agents that are able to inhibit Akt more effectively are warranted.
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Affiliation(s)
- J M Brandwein
- Department of Medical Oncology and Hematology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada.
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Agostini C, Agudelo PA, Bâ K, Barber PA, Bisol PM, Brouat C, Burgess TI, Calves I, Carrillo Avila M, Chow S, Cordes L, Da Silva D, Dalecky A, De Meester L, Doadrio I, Dobigny G, Duplantier JM, Evison SEF, Ford R, Fresneau D, Galetti PM, Gauthier P, Geldof S, Granjon L, Guérin F, St J Hardy GE, Hernandez Escobar C, Hima K, Hu J, Huang L, Humeau L, Jansen B, Jaquemet S, Jiang ZQ, Jung SJ, Kim BS, Kim CH, Kim JO, Lai CH, Laroche J, Lavergne E, Lawton-Rauh A, Le Corre M, Leach MM, Lee J, Leo AE, Lichtenzveig J, Lin L, Linde CC, Liu SF, Marino IAM, McKeown NJ, Nohara K, Oh MJ, Okamoto H, Oliver R, Olivera Angel M, Ornelas-García CP, Orsini L, Ostos Alfonso H, Othman AS, Papetti C, Patarnello T, Pedraza-Lara C, Piller KR, Poteaux C, Requier JB, Roziana MK, Semba Y, Sembene M, Shah RM, Shahril AR, Shao A, Shaw PW, Song L, Souza Ferreira R, Su YQ, Suzuki N, Tatard C, Taylor KM, Taylor PWJ, Thiam M, Valbuena R, Wang H, Yang BG, Yuan Q, Zajonz U, Zane L, Zhu L, Zhuang ZM, Zulaiha AR. Permanent genetic resources added to Molecular Ecology Resources Database 1 October 2010-30 November 2010. Mol Ecol Resour 2011; 11:418-21. [PMID: 21429157 DOI: 10.1111/j.1755-0998.2010.02970.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This article documents the addition of 277 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Ascochyta rabiei, Cambarellus chapalanus, Chionodraco hamatus, Coptis omeiensis, Cynoscion nebulosus, Daphnia magna, Gerbillus nigeriae, Isurus oxyrinchus, Lates calcarifer, Metacarcinus magister, Oplegnathus fasciatus, Pachycondyla verenae, Phaethon lepturus, Pimelodus grosskopfii, Rotylenchulus reniformis, Scomberomorus niphonius, Sepia esculenta, Terapon jarbua, Teratosphaeria cryptica and Thunnus obesus. These loci were cross-tested on the following species: Austropotamobius italicus, Cambarellus montezumae, Cambarellus puer, Cambarellus shufeldtii, Cambarellus texanus, Chionodraco myersi, Chionodraco rastrospinosus, Coptis chinensis, Coptis chinensis var. brevisepala, Coptis deltoidea, Coptis teeta, Orconectes virilis, Pacifastacus leniusculus, Pimelodus bochii, Procambarus clarkii, Pseudopimelodus bufonius, Rhamdia quelen, Sepia andreana, Sepiella maindroni, Thunnus alalunga, Thunnus albacares, Thunnus maccoyii, Thunnus orientalis, Thunnus thynnus and Thunnus tonggol.
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Affiliation(s)
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- Department of Biology-University of Padova, via U. Bassi 58/b, Padua, Italy
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Chow S, Mullan B. Predicting food hygiene. An investigation of social factors and past behaviour in an extended model of the Health Action Process Approach. Appetite 2010; 54:126-33. [DOI: 10.1016/j.appet.2009.09.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 09/17/2009] [Accepted: 09/30/2009] [Indexed: 10/20/2022]
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Carter L, Chow S, Scott D, Hartshorn G, Califano R, Blackhall F. Smoking in teenagers. Lung Cancer 2010. [DOI: 10.1016/s0169-5002(10)70120-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ramanathan RK, Dragovich T, Richards D, Stephenson J, Pestano L, Hiscox A, Leos R, Chow S, Millard J, Kirkpatrick L. Results from phase Ib studies of PX-12, a thioredoxin inhibitor in patients with advanced solid malignancies. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.2571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2571 Background: PX-12, a small-molecule inhibitor of Thioredoxin-1 (Trx-1) stimulates apoptosis, down-regulates HIF- 1α, VEGF in animal models. High levels of Trx-1 have been linked to chemoresistance in lung cancers. The phase 2 dose of PX-12 was 226 mg/m2 given by 3-h infusion IV x 5 days, q 21d (Ramanathan RK et al. CCR 13; 2109; 2007). Two Phase 1b trials of PX-12 in patients with advanced solid tumors have been completed to determine the safety, tolerability and optimal biologic dose when delivered by prolonged infusion. Methods: PX-12 was administered as a 24-h infusion every q7- 14d starting at 150 mg/m2/day (n=18); or a 72-h infusion q 21d, starting at 300 mg/m2/day (n=14) using a portable delivery pump. Results: Both the 24- or 72-h infusion of PX-12 were well tolerated in patients at doses up to 400 mg/m2/day. Common grade 1/2 AE's included fatigue, taste alteration, and odor caused by expired drug metabolite. In the 24 h study the maximal dose evaluated was 450 mg/m2. No DLTs were observed in this study. Since no MTD was reached on 24-h infusion up to 450 mg/m2 dose level, additional higher doses were explored utilizing 72-h infusion. DLT in the 72-h study at the highest dose administered (500 mg/m2/day) included reversible hypoxia with or without pneumonitis. Best response was stable disease in 3 pts (SD): liver cancer and colon cancer (24-h infusion) and rectal cancer (72-h infusion). Pharmacodynamics (PD): PX- 12 lowered circulating Trx-1 levels in patients who had starting Trx-1 levels 3-fold greater than that of the normal population (5.4 ng/mL) including all three SD. Circulating VEGF and FGF-2 levels were also lowered over multiple courses of treatment in these patients. The pharmacokinetics of PX-12 showed a dose dependent increase of Cmax and no accumulation over multiple cycles following a 24 h infusion. Conclusions: Dosing at 400 mg/m2/day appears safe and tolerable as a 24–72-h infusion. Extending the infusion time to 72h appears to decrease the intensity of cough and odor compared to bolus 1–3 h infusion. The PD effect produced by PX-12 was apparent only in those patients with elevated plasma Trx-1 levels. Patients with elevated TRX-1 levels appear to have the best probability of having SD. Supported by ProlX Pharmaceuticals/Oncothyreon through an award from the NCI. [Table: see text]
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Affiliation(s)
- R. K. Ramanathan
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - T. Dragovich
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - D. Richards
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - J. Stephenson
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - L. Pestano
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - A. Hiscox
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - R. Leos
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - S. Chow
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - J. Millard
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
| | - L. Kirkpatrick
- Scottsdale Clinical Research Institute, Scottsdale, AZ; Arizona Cancer Center, Tucson, AZ; US Oncology, Tyler, TX; US Oncology, Greenville, SC; Oncothyreon, Tucson, AZ
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Chow S, Ueno Y, Toyokawa M, Oohara I, Takeyama H. Preliminary analysis of length and GC content variation in the ribosomal first internal transcribed spacer (ITS1) of marine animals. Mar Biotechnol (NY) 2009; 11:301-306. [PMID: 18937008 DOI: 10.1007/s10126-008-9153-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2008] [Accepted: 09/25/2008] [Indexed: 05/26/2023]
Abstract
Length and guanine-cytosine (GC) content of the ribosomal first internal transcribed spacer (ITS1) were compared across a wide variety of marine animal species, and its phylogenetic utility was investigated. From a total of 773 individuals representing 599 species, we only failed to amplify the ITS1 sequence from 87 individuals by polymerase chain reaction with universal ITS1 primers. No species was found to have an ITS1 region shorter than 100 bp. In general, the ITS1 sequences of vertebrates were longer (318 to 2,318 bp) and richer in GC content (56.8% to 78%) than those of invertebrates (117 to 1,613 bp and 35.8% to 71.3%, respectively). Specifically, gelatinous animals (Cnidaria and Ctenophora) were observed to have short ITS1 sequences (118 to 422 bp) with lower GC content (35.8% to 61.7%) than the other animal taxa. Mollusca and Crustacea were diverse groups with respect to ITS1 length, ranging from 108 to 1,118 and 182 to 1,613 bp, respectively. No universal relationship between length and GC content was observed. Our data indicated that ITS1 has a limited utility for phylogenetic analysis as obtaining confident sequence alignment was often impossible between different genera of the same family and even between congeneric species.
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Affiliation(s)
- S Chow
- National Research Institute of Fisheries Science, Yokosuka, Kanagawa, Japan.
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Chow S, Pope JE, Mehta S. Lack of correlation of the health assessment questionnaire disability index with lung parameters in systemic sclerosis associated pulmonary arterial hypertension. Clin Exp Rheumatol 2008; 26:1012-1017. [PMID: 19210864] [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: 05/27/2023]
Abstract
OBJECTIVE Pulmonary arterial hypertension (PAH) affects the quality of life (QoL) and the ability to perform the activities of daily living (ADLs) in patients with systemic sclerosis (SSc). We determined whether the Health Assessment Questionnaire-Disability Index (HAQ-DI), a self-assessment measure of function, correlates with a patient's PAH status in a population of SSc patients with PAH. METHODS Forty-one patients from one centre with systemic scleroderma, dyspnea and PAH were included. All patients filled in a HAQ-DI, and underwent evaluation with pulmonary function tests (PFTs), 6-minute walk distance (6MWD), degree of dyspnea (Borg dyspnea index), NYHA functional class, and expert PAH physician global assessment every 6 months. Change in HAQ DI was studied to determine relationship to changes in PAH. RESULTS The HAQ-DI scores had no significant correlation with PAH, including NYHA functional class (r=0.38, p=0.39), Borg dyspnea index (r=0.60, p=0.37), 6MWD (r=-0.04, p=0.86), % predicted DLCO (r=0.31, p=0.25), % predicted FVC (r=0.02, p=0.93), and expert PAH physician global assessment (r=0.06, p=0.97). CONCLUSION HAQ-DI is not an adequate measure of PAH status in SSc patients with PAH. Although PAH causes severe morbidity and death, changes in PAH severity were not reflected in an overall functional status change as assessed by the HAQ-DI. Thus, HAQ-DI changes do not reflect PAH status in SSc.
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Affiliation(s)
- S Chow
- Departments of Rheumatology and Respirology, Schulich School of Medicine, University of Western Ontario, London, Ontario, Canada
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Abstract
A number of fundamentally important biological processes, such as cell signaling and the initiation of mitosis, are accompanied by a change in intracellular pH. Flow cytometric measurement of pH is a generally straightforward procedure that can be done with any instrument equipped with a 488-nm argon laser. The overall approach is similar to that for calcium: generation of a calibration curve by imparting known changes in pH and interpolation of the test sample pH. This unit presents the traditional calibration method using high-potassium buffers and the proton ionophore nigericin and a more recently developed technique, the pseudo null method, which involves resuspension of cells in defined mixtures of weak acids and weak bases.
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Affiliation(s)
- S Chow
- Ontario Cancer Institute and Princess Margaret Hospital, Toronto, Ontario, Canada
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Krishnan A, Chow S, Thomas P, Glanville A, Yates D. 531: Longitudinal Analysis of Exhaled Breath Condensate Biomarkers after Lung Transplantation. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.545] [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: 10/22/2022] Open
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Liu J, Conrad DH, Chow S, Tran VH, Yates DH, Thomas PS. Collection devices influence the constituents of exhaled breath condensate. Eur Respir J 2008; 30:807-8. [PMID: 17906090 DOI: 10.1183/09031936.00080207] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Brufsky A, Chow S, Kapoor A, Bhargava R, Surti U, Rosenzweig M. Women with Her2 unamplified but chromosome 17 hyperploid metatstatic breast cancer (MBC) respond to traztuzumab. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.21051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
21051 Background: Guidelines for the interpretation of Her2 testing by FISH in determining therapy for Her2 positive metatstatic breast cancer generally suggest that only women with Her2 to chromosome 17 (CEP 17) amplification ratios of greater than 2.0 will benefit from traztuzumab. However, hyperploidy of chromosome 17 may lead to increased Her2 copy number despite a normal HER2/CEP 17 ratio, which may also predict response. We sought to examine hyperploid frequency in a well defined Her2 positive MBC population. We also sought to determine the time to progression (TTP) on first chemotherapy for MBC in such women, as well as their overall survival (OS) with MBC. Methods: A tissue mircoarray (TMA) with 3-fold redundancy was constructed using 0.6mm cores from primary or metatstatic paraffin embedded tumor from 124 cases which were Her2 2+ or 3+ by IHC, or amplified by FISH, on pathology report. Four micron thick TMA sections were used for HER2 IHC and HER2 FISH analysis. HER2/CEP 17 ratios of 2.0 or more was considered as amplification. If the tumor was 2+ or 3+ by IHC, greater than or equal to 3 signals for chromosome 17 were seen in a majority of cell nuclei, and the HER2/CEP17 ratio was less than 2.0, the tumor was considered hyperploid Her2 FISH negative. Results: Tissue blocks from 52 tumors delivered clearly interpretable amplification for Her2 by FISH. An additional 10 tumors (8%) were hyperploid, IHC positive (2+ or 3+), and FISH negative. Median survival (Kaplan-Meier) was 39 months (95% CI, 21–62) for women with hyperploid FISH negative tumors and 41 months (95% CI, 25–53) for women with FISH positive tumors (p=0.63, NS, Wilcoxon). Median time to progression (Kaplan-Meier) on first therapy for metastatic disease was 14 months (95% CI, 8–20) for hyperploid FISH negative tumors and 15 months (95% CI, 12–18) for women with FISH positive tumors (p=0.41, NS, Wilcoxon). Conclusions: In this analysis, women with hyperploid Her2 FISH negative IHC positive tumors had similar TTP and OS as women with Her2 FISH positive tumors. These women, although Her2 FISH negative, appeared to respond well to traztuzumab. These provocative results should be repeated on larger data sets. No significant financial relationships to disclose.
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Affiliation(s)
- A. Brufsky
- University of Pittsburgh, Magee Womens Hosp, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - S. Chow
- University of Pittsburgh, Magee Womens Hosp, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - A. Kapoor
- University of Pittsburgh, Magee Womens Hosp, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - R. Bhargava
- University of Pittsburgh, Magee Womens Hosp, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - U. Surti
- University of Pittsburgh, Magee Womens Hosp, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - M. Rosenzweig
- University of Pittsburgh, Magee Womens Hosp, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
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Kapoor A, Chow S, Bhargava R, Surti U, Rosenzweig M, Vuga M, Brufsky A. Topoisomerase II-alpha (TOP2A) gene co-amplification does not predict response to therapy and survival in Her-2 neu positive metastatic breast cancer. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.21108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
21108 Background: Preliminary data from a phase III trial of adjuvant traztuzumab (BCIRG, SABCS 2005, abstract 1045) suggested that co-amplification of the genes for HER2 and topisomerase II alpha (TOP2A) on chromosome 17 resulted in improved disease free survival with chemotherapy regimens containing both and anthracycline and traztuzumab. We sought to determine if co-amplification of HER2 and TOP2A was a predictor of response and benefit (or lack thereof) to herceptin containing chemotherapy in the metastatic setting, since few women receive both therapies concurrently for MBC. Methods: A tissue mircoarray (TMA) with 3-fold redundancy was constructed using 0.6mm cores from primary or metatstatic paraffin embedded tumor from 124 cases from Magee-Women's Hospital which were Her2 2+ or 3+ by IHC, or amplified by FISH, on pathology report. Four micron thick TMA sections were used for HER2 immunohistochemical (CB11 monoclonal antibody, Ventana Medical Systems, Tucson, AZ) and HER2 and TOP2A FISH analysis (HER2/CEP 17 and TOP2A/CEP 17 dual color probes from Vysis Inc. Downers Grove, IL). HER2 (or TOP2A) gene to chromosome 17 ratios of 2.0 or more was considered as amplification. Results: Tissue blocks from 52 tumors delivered clearly interpretable amplification for Her2 by FISH on reanalysis. The remaining 72 tumors are undergoing further reanalysis. Of the 52 tumors with Her2 amplification, 15 (29%) had co- amplification of TOP2A. Median survival was 44 months (95% CI, 31–69) for women with TOP2A coamplified tumors and 35 months (95% CI, 29- 63) for women with non-coamplified tumors (p=0.448, NS). Median time to progression on first therapy was 17 months (95% CI, 14–20) for women with TOP2A coamplified tumors and 15 months (95% CI, 12–17) for women with non-coamplified tumors (p=0.939, NS) Conclusions: In this analysis, TOP2A and HER2 gene co-amplification did not correlate with worse TTP on first metatstatic therapy or worse OS from metatstatic disease. No significant financial relationships to disclose.
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Affiliation(s)
- A. Kapoor
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - S. Chow
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - R. Bhargava
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - U. Surti
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - M. Rosenzweig
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - M. Vuga
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - A. Brufsky
- University of Pittsburgh Medical Center, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA
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Rizzo C, Fotino M, Zhang Y, Chow S, Spizuoco A, Sinha AA. Direct characterization of human T cells in pemphigus vulgaris reveals elevated autoantigen-specific Th2 activity in association with active disease. Clin Exp Dermatol 2005; 30:535-40. [PMID: 16045688 DOI: 10.1111/j.1365-2230.2005.01836.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [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: 11/30/2022]
Abstract
Pemphigus vulgaris (PV) is a blistering skin disorder mediated by autoantibodies targeting the epidermal adhesion molecule desmoglein 3 (Dsg3). As Th2-associated cytokines are necessary for directing antibody production, it is hypothesized that Dsg3-specific Th2 activity is associated with active disease. We used cell-surface-matrix technology in combination with flow cytometry to characterize the Dsg3-reactive T-cell population using peripheral blood mononucleocytes sampled from PV patients stratified by active (n = 9) or remittent disease (n = 6), and healthy human leucocyte antigen-matched controls (n = 5). We evaluated interferon-gamma-producing CD4+ cells (Th1) and interleukin (IL)-10- or IL-4-producing CD4+ cells (Th2). The mean frequency of Th2 CD4+ T cells was significantly elevated for five of nine PV patients with active disease. No significant Th2 responses were detected for patients with remittent disease or controls. There was a significant association of Th2 activity with active disease compared with remittent and control groups (P = 0.026 and P =0.012, respectively), and Th2 activity was significantly correlated with anti-Dsg3 IgG titre (P = 0.044). One patient with remittent disease converted from a Th2-negative to a Th2-positive response with the initiation of disease activity. An antigen-specific CD4- lymphocyte response was detected in five PV patients (36%), and was shown to correlate closely with the CD8+ population. These results are consistent with the hypothesis that Th2 response directs autoantibody production and is therefore associated with disease activity in PV.
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Affiliation(s)
- C Rizzo
- Department of Dermatology, Weill Medical College of Cornell University, New York, NY 10021, USA
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Forrest G, Chow S. A Liver Transplant Recipient with an Infected Explanted Liver. Clin Infect Dis 2005. [DOI: 10.1086/426901] [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: 11/03/2022] Open
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Kirkpatrick L, Dragovich T, Ramanathan R, Sharlow E, Chow S, Williams D, Himler R, Baker A, Egorin M. Results from Phase I study of PX-12, a thioredoxin inhibitor in patients with advanced solid malignancies. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- L. Kirkpatrick
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - T. Dragovich
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - R. Ramanathan
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - E. Sharlow
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - S. Chow
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - D. Williams
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - R. Himler
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - A. Baker
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - M. Egorin
- ProlX Pharmaceuticals, Tucson, AZ; Arizona Cancer Center, Tucson, AZ; University of Pittsburgh Cancer Institute, Pittsburgh, PA
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Lee A, Hazlett CB, Chow S, Lau FL, Kam CW, Wong P, Wong TW. How to minimize inappropriate utilization of Accident and Emergency Departments: improve the validity of classifying the general practice cases amongst the A&E attendees. Health Policy 2003; 66:159-68. [PMID: 14585515 DOI: 10.1016/s0168-8510(03)00023-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [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: 11/19/2022]
Abstract
Studies have found that one-third to two-thirds of all patients attending Accident and Emergency (A and E) Departments could be managed appropriately by general practitioners (GPs). There is also evidence that referral to GPs can be acceptable to patients. The question of primary concern is screening non-urgent cases with high degrees of sensitivity (S), specificity (SP), and positive predictive value (PPV). This paper reports the findings of the validity (S, SP and PPV) of nurses and patients in triaging A and E visitors. A cross sectional study was conducted over a 1 year period and subjects were randomly selected from four A and E Departments located across the four principle geographic regions of Hong Kong by stratified, two-stage sampling. S, SP and PPVs were computed for both non-weighted and weighted conditions. The gold standard for defining the true urgency status of each selected patient was based on a review of the patient's record 3-21 days (or longer if necessary) following the A and E visit. The record review in each A and E was blinded and done independently by a panel of two (and if disagreement existed, three) senior emergency physicians who did not practice in the same hospital. The greatest weights would be for incorrect decisions with greatest impact on patients' well being. The most accurate unweighted nurses' triage classification had an average sensitivity of 87.8%, specificity of 83.9%, and a PPV of 70.1%. When weighted, the average sensitivity reduced to 75%, specificity to 65.7%, and PPV to 54%. The most accurate unweighted patients' self-triage classification yielded a sensitivity of 62.5%, specificity of 69.2%, and a PPV of 58.1%, and correspondingly reduced to 43.3, 49.2 and 38.6% if weights were applied. Validity of the derived patients' self-classifications was too inaccurate for practical use. Hong Kong's current use of a five-point urgency scale by nurses would be further refined for identifying non-urgent visitors. If a mechanism was put in place for additional screening on visitors with a borderline semi-urgent or non-urgent status, the nurses could safely reassign non-urgent patients to GP care. If implemented, a significant impact on hospital costs could be realized.
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Affiliation(s)
- Albert Lee
- Department of Community and Family Medicine, the Chinese University of Hong Kong, School of Health, Prince of Wales Hospital, N.T., Shatin, Hong Kong.
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Thompson J, Pugh T, Guggenheimer K, Safarpour A, Christie A, Pel J, Chow S, Marziali A. Facilitated loading of horizontal gels using a capillary comb loader. Biotechniques 2003; 34:814-8. [PMID: 12703306 DOI: 10.2144/03344rr03] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Manual loading of samples into horizontal gels, such as the agarose gels commonly used for DNA fragment sizing and quantification, is laborious and prone to errors. Manual-loading times for highthroughput gels can reach 10 min/gel, and human error can result in incorrect identification of samples because of reverse loading or other errors in the loading process. To reduce gel-loading times and to improve reliability, a novel comb has been developed that uses glass capillaries and hydrostatic pressure to simplify sample loading from microplates. Accurate sample metering is ensured by the uniform length and volume of the capillaries. The loaded comb is placed in the gel boat over a pre-cast agarose gel, and buffer is added to a reservoir at the top of the comb. Once the buffer rises over the ends of the capillaries, the samples are pushed into the wells by hydrostatic pressure. This technique was successfully demonstrated for a 24-lane comb. This capillary comb loader reduces loading time, maintains well-to-well uniformity, and retains the same geometry and appearance of manually loaded bands, making this loading method compatible with existing downstream processes and software for subsequent analysis of the gel image.
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Affiliation(s)
- J Thompson
- University of British Columbia, Vancouver, BC, Canada
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Abstract
OBJECTIVE To investigate protein kinase G-I (PKG-I) expression and activation in cavernosal smooth muscle cells (CSMC) of young and old rats. MATERIALS AND METHODS PKG-I expression in rat penis was examined by immunohistochemical staining, reverse transcription-polymerase chain reaction, and Western blot analysis. CSMC isolated from young (16-week-old) and old (28-month-old) rats were grown as monolayer cell cultures and treated with different dosages of cAMP or cGMP for different periods. Their proteins were then analysed for the expression of vasodilator-stimulated phosphoprotein (VASP), phosphorylated VASP (at serine 239), PKG-I, and protein kinase A (PKA). RESULTS PKG-I expression was detected in the vascular and CSMC of the rat penis. There was little or no difference in the level of PKG-I expression between young and old rats. Treatment of CSMC with different dosages of cAMP or cGMP did not change the expression levels of VASP throughout the entire test period (up to 24 h). In contrast, the level of VASP phosphorylation at S239, i.e. the level of PKG-I activation, depended on the dosages of cAMP and cGMP and on the duration of treatment. Prolonged treatment (24 h) with either cAMP or cGMP resulted in down-regulation of both PKG-I and PKA. While cAMP and cGMP produced very similar results in nearly every aspect, there was a difference in one test, in which cGMP produced much less activated PKG-I than cAMP in the CSMC of 28-month-old-rats. CONCLUSIONS For the first time we provide evidence for PKG-I activation in CSMC. Both cAMP and cGMP were capable of activating PKG-I in CSMC. Age seemed to compromise the ability of PKG-I in response to cGMP.
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Affiliation(s)
- C-S Lin
- Knuppe Molecular Urology Laboratory, Department of Urology, School of Medicine, University of California, San Francisco, CA 94143-1695, USA.
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Lin CS, Chow S, Lau A, Tu R, Lue TF. Human PDE5A gene encodes three PDE5 isoforms from two alternate promoters. Int J Impot Res 2002; 14:15-24. [PMID: 11896473 DOI: 10.1038/sj.ijir.3900802] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2001] [Revised: 08/30/2001] [Accepted: 10/06/2001] [Indexed: 11/10/2022]
Abstract
Sildenafil improves erectile function by inhibiting the cGMP-catalytic activity of phosphodiesterase type V (PDE5). We used rapid amplification of cDNA Ends-polymerase chain reaction (RACE-PCR) to isolate three PDE5 isoforms from human corpus cavernosum. Semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) analysis on eight human cavernous tissue samples showed that all samples expressed the PDE5A1 at a lower level than the PDE5A2 isoform. Five samples expressed the PDE5A3 isoform at various levels while the other three did not. Analysis on non-penile tissues showed that all tissues expressed the A1 and A2 isoforms while only those that have substantial amounts of smooth muscle expressed the A3 isoform. Cloning and sequencing of the PDE5A gene showed that the isoform-specific 5'-ends of the PDE5 mRNAs are encoded from three alternative first exons arranged in the order of A1-A3-A2. Promoter activities were detected upstream from the A1-specific exon and in the intron preceding the A2-specific exon. The upstream PDE5A promoter is expected to direct the expression of all three PDE5 isoforms while the intronic PDE5A2 promoter only the A2 isoform. Both promoters were upregulated by increasing concentrations of either cAMP or cGMP. Several transcription factor AP2 and Sp1-binding sequences identified in the promoters are likely to be the mediators of cAMP/cGMP-responsiveness.
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Affiliation(s)
- C-S Lin
- Knuppe Molecular Urology Laboratory, School of Medicine, University of California, San Francisco, CA 94143-1695, USA.
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