1
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Forbes L, Miller JL, Baschat AA, Kanaan C, Gevaerd Martins J. MoMo pregnancies Mo problems: notoriously complicated monochorionic monoamniotic multiple gestation. Ultrasound Obstet Gynecol 2024. [PMID: 38419262 DOI: 10.1002/uog.27628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Affiliation(s)
- L Forbes
- Eastern Virginia Medical School, Department of Obstetrics and Gynecology, Norfolk, VA, USA
| | - J L Miller
- Johns Hopkins University, Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - A A Baschat
- Johns Hopkins University, Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - C Kanaan
- Eastern Virginia Medical School, Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Norfolk, VA, USA
| | - J Gevaerd Martins
- Eastern Virginia Medical School, Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Norfolk, VA, USA
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2
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Miller JL, Chang RH, Ong CS, Miller GT, Garcia JR, Groves ML, Rosner MK, Baschat AA. Patient-matched fetal simulator for fetoscopic myelomeningocele closure. Ultrasound Obstet Gynecol 2023; 61:270-272. [PMID: 36178849 DOI: 10.1002/uog.26081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/31/2022] [Accepted: 09/22/2022] [Indexed: 05/27/2023]
Affiliation(s)
- J L Miller
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD, USA
| | - R H Chang
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD, USA
| | - C S Ong
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD, USA
| | - G T Miller
- The Johns Hopkins Medicine Simulation Center, Department of Emergency Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - J R Garcia
- Department of Art as Applied to Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - M L Groves
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University, Baltimore, MD, USA
| | - M K Rosner
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD, USA
| | - A A Baschat
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD, USA
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3
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Madujibeya I, Chung ML, Moser DK, Miller JL, Humbert J, Chih M, Pelzel JM, Lennie TA. Patients experiences of using a publicly avaliable mobile health application for self-care of heart failure in a real-world setting. Eur J Cardiovasc Nurs 2022. [DOI: 10.1093/eurjcn/zvac060.111] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public Institution(s). Main funding source(s): University of Kentucky disseration award
Background
Publicly available patient-focused mobile health applications (mHealth apps) are being increasingly integrated into routine heart failure (HF)-related self-care. However, there is a dearth of research on patients’ experiences using mHealth apps for self-care in real-world settings. The purpose of this study was to explore patients’ experiences using a publicly available mHealth app, OnTrack to Health, for HF self-care in a real-world setting.
Method
Patient satisfaction, measured with a 5-point Likert scale and an open-ended survey were used to gather data from 23 patients with HF who were provided the OnTrack to Health app as a part of routine HF management. A content analysis of patients’ responses was conducted with qualitative software, Atlas. ti version 8.
Results
Patients (median age = 64.0 [57.0, 70.5] years, 73.9% (n = 17) male) used OnTrack to Health for a median duration of 164.0 [ 51.2, 639.9] days before the survey. All patients reported excellent experiences related to app use and would recommend the app to other patients with HF. Four themes emerged from the responses to the open-ended questions: (1) perceived benefits (simplified self-care tasks, improved adherence to medications, enhanced communication and connection with healthcare providers, facilitated HF symptoms monitoring, improved HF knowledge, decreased hospitalization, and provided assurance of safety); (2) barriers (challenges of abandoning previous self-care strategies); (3) facilitators (perceived ease of use, availability of technical support); (4) suggested improvements (streamlining data entry, integration of apps with an electronic medical record, and personalization of app features).
Conclusion
Patients were satisfied with using mHealth apps for self-care. They perceived apps as a valuable tool for improving self-care ability and decreasing hospitalization rates. Personalization of app features and integration of mHealth apps with electronic health records are essential to sustain high-quality patient experiences related to app use for self-care.
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Affiliation(s)
- I Madujibeya
- University of Kentucky, College of Nursing , Lexington , United States of America
| | - M L Chung
- University of Kentucky, College of Nursing , Lexington , United States of America
| | - D K Moser
- University of Kentucky, College of Nursing , Lexington , United States of America
| | - J L Miller
- University of Kentucky, College of Nursing , Lexington , United States of America
| | - J Humbert
- CentraCare Heart & Vascular Center, Advanced Heart Failure , St Cloud, Minnesota , United States of America
| | - M Chih
- University of Kentucky, College of Nursing , Lexington , United States of America
| | - J M Pelzel
- CentraCare Heart & Vascular Center, Advanced Heart Failure , St Cloud, Minnesota , United States of America
| | - T A Lennie
- University of Kentucky, College of Nursing , Lexington , United States of America
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4
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Tedjawirja VN, van Klink JM, Haak MC, Klumper FJ, Middeldorp JM, Miller JL, Rosner M, Baschat AA, Lopriore E, Oepkes D. Questionable benefit of intrauterine transfusion following single fetal death in monochorionic twin pregnancy. Ultrasound Obstet Gynecol 2022; 59:824-825. [PMID: 35137996 DOI: 10.1002/uog.24876] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Affiliation(s)
- V N Tedjawirja
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - J M van Klink
- Department of Medical Psychology, Leiden University Medical Center, Leiden, The Netherlands
| | - M C Haak
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - F J Klumper
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - J M Middeldorp
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - J L Miller
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - M Rosner
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - A A Baschat
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - E Lopriore
- Department of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - D Oepkes
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
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5
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Smith J, Mcneely C, Chung ML, Miller JL, Biddle M, Schuman DL, Rayens MK, Lennie TA, Hammash M, Mudd-Martin G, Moser DK. Does perceived stress mediate the relationship between financial status, depression, and anxiety in caregivers at risk for cardiovascular disease (CVD)? Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.299] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public Institution(s). Main funding source(s): National Institutes of Health National Institute of Nursing Research
Background/Introduction
Caregivers are at high risk of anxiety and depression, and caregiver mental health is linked to higher CVD risk in caregivers over their non-caregiving peers. Most research focuses on caregiver burden as a primary cause for caregiver’s emotional distress, such as anxiety and depression. Other stressors like financial burden are less emphasized, despite widespread documentation of financial burden as a key social determinant of health. We hypothesize financial status predicts anxiety and depression through perceived stress.
Purpose
To identify the relationship between financial status and caregiver anxiety and depression and determine if it is mediated by perceived stress.
Methods
We analyzed cross-sectional data from the Rural Intervention for Caregiver’s Heart Health study. Anxiety was assessed using the Brief Symptom Inventory – Anxiety subscale (range 0 -3.5) and depression was assessed by the Patient Health Questionnaire –9 (range 0 - 27). Financial status was measured with one item that asked participants to rank their financial situation by level of comfort (not enough to make ends meet, enough to make ends meet, and comfortable), and perceived stress measured with Cohen’s Perceived Stress Scale – 4. Analysis was performed separately for the two mental health outcomes using OLS regression and, to test mediation, the PROCESS macro for SPSS and the bootstrapping procedure with 5,000 samples. We included age, gender, marital status, number of people in the household, body mass index, smoking status, and caregiver burden as covariates.
Results
Of the 287 participants, average age was 54 ± 13; 76% were female, 95.8% were Caucasian, and 70.4% were married. Controlling for covariates, caregivers with not enough to make ends meet reported substantially greater depressive symptoms (b=2.22, 95% CI = 0.48 – 3.96) and marginally greater anxiety (b=0.23, 95% CI = -0.02 – 0.47) compared to caregivers who were financially comfortable. These associations were not mediated by perceived stress as hypothesized.
Conclusions
Among caregivers who are at risk for CVD, financial status was important in reporting both depression and to a lesser extent, anxiety however perceived stress does not mediate this relationship. This is interesting as perceived stress is often a target for interventions that focus on reducing depression and anxiety in this population however our analysis emphasizes the importance of financial status alone. When designing interventions to reduce the CVD risk factors of anxiety and depression, more attention should be paid to relieving financial burden.
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Affiliation(s)
- J Smith
- University of Tennessee, Knoxville, United States of America
| | - C Mcneely
- University of Tennessee, Knoxville, United States of America
| | - ML Chung
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - JL Miller
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - M Biddle
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - DL Schuman
- The University of Texas at Arlington, Social Work, Arlington, United States of America
| | - MK Rayens
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - TA Lennie
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - M Hammash
- University of Louisville, School of Nursing, Louisville, United States of America
| | - G Mudd-Martin
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - DK Moser
- University of Kentucky, College of Nursing, Lexington, United States of America
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6
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Faden MS, Laurie M, Miller JL, Millard S, Rosner M, Baschat AA. Precise anatomical definition of fetal spina bifida using standardized three-dimensional annotation-assisted multiplanar volume contrast ultrasound imaging. Ultrasound Obstet Gynecol 2022; 59:122-124. [PMID: 34254390 DOI: 10.1002/uog.23737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/15/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Affiliation(s)
- M S Faden
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Laurie
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J L Miller
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Millard
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Rosner
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A A Baschat
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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7
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Chung ML, Lennie TA, Miller JL, Moser DK. Linking salt preference to enjoyment of low sodium diet in patients with heart failure. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3018] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Preference for salty foods is linked to dietary sodium intake. Increased salt preference is a barrier to low sodium diet (LSD) adherence due to perceived poor taste. Although patients with heart failure (HF) are advised to follow a LSD, the adherence remains poor. Understanding the relationship among attitudes, subjective norms (individuals' beliefs about how much they follow the advice of respected others), and perceived control for following a LSD, salt preference, and LSD enjoyment will help in designing interventions to increase adherence in patients with HF.
Purpose
The purpose of this study was to examine whether attitudes toward following a LSD, subjective norms about LSD, and perceived behavioral control for following a LSD mediated the association between salt preference and enjoyment of a LSD in patients with HF.
Methods
In this cross-sectional study, outpatients with HF completed the Dietary Sodium Restriction Questionnaire (DSRQ) based on the Theory of Planned Behavior, and rated salt preference and enjoyment of a LSD on a scale from 0 to 10 with 10 indicating the highest salt preference and enjoyment of LSD. Parallel mediation analyses were conducted using the PROCESS macro program in SPSS with 5,000 bootstrap samples controlling for age and gender. Three subscales of the DSRQ (i.e., attitude, subjective norms, and perceived behavioral control) were used as mediators.
Results
A sample of 117 patients with HF (65% male, mean age = 61.2±14.3, range 27 to 94, 82% white) completed the study. The mean salt preference rating was 5.26 (SD=2.7), and the LSD enjoyment rating was 4.56 (SD=2.5). Salt preference was not directly associated with LSD enjoyment (direct effect = −0.0506, 95% CI: [−0.2394, 0.1381]). There was a significant indirect effect of salt preference on the enjoyment of LSD through perceived behavioral control (indirect effect = −0.1178, 95% CI: [−0.0321, 0.0446]) (Figure 1). Patients with a high salt preference were more likely to have low levels of LSD enjoyment through the mediator of having low levels of perceived behavioral control over following a LSD. Subjective norms and attitudes toward LSD were not significant mediators of the association between salt preference and LSD enjoyment.
Conclusion
High preference for salty food decreased perceived behavioral control of LSD, which reduced enjoyment of LSD in patients with HF. Salt preference and perceived behavioral control in LSD are behavioral barriers in hedonic shift in LSD enjoyment. The findings suggest that intervention to promote LSD adherence should include strategies to increase perceived behavioral control in eating LSD and decreasing salt preference.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Institutes of Health in the USA
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Affiliation(s)
- M L Chung
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - T A Lennie
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - J L Miller
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - D K Moser
- University of Kentucky, College of Nursing, Lexington, United States of America
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8
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Chung ML, Moser DK, Miller JL, Lennie TA. Association of age and dietary sodium intake in patients with heart failure: testing mediating effects of preference for salt and enjoyment of sodium-restricted diet. Eur J Cardiovasc Nurs 2021. [DOI: 10.1093/eurjcn/zvab060.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Other. Main funding source(s): National Institutes of Health (NIH)
Background
The poor taste foods in a low sodium diet and patients’ preferences for salty foods are known barriers to sodium restricted diet (SRD) adherence. Older adults may experience less enjoyment of SRD due to decreased sense of taste. However, little is known about how age is associated with sodium intake, preference for salt, and enjoyment of SRD in patients with heart failure (HF).
Purpose
The purpose of this study was to examine effect of age on dietary sodium intake through their preference for salt and enjoyment of SRD in patients with HF.
Methods
In this cross-sectional study, we used baseline data from participants in a randomized controlled trial of a SRD intervention for patients with HF and their caregivers. Patients were asked to collect 24-hour urine to measure dietary sodium intake. Preference for salty food and enjoyment of SRD were assessed using a question on an 11-point numeric scale (range 0 to 10). Parallel mediation analyses were conducted using the PROCESS macro program in SPSS with 5,000 bootstrap samples.
Results
A total of 136 patients with HF (64% male, mean age = 60.3 ± 14.4, range 27 to 90, 80.1% white) had a mean 24-hr urine sodium of 4320mg (SD = 2053, range: 1553 mg – 11495 mg) with most (71%) having a 24-hr urine sodium > 3000mg. The mean preference for salty food was 5.3 (SD = 2.8) on a scale from 0 to 10 with 10 indicating greater preference and enjoyment of SRD was 4.4 (SD = 2.5) on the same scale. Age was significantly associated with sodium intake in that older patients were more likely to eat less sodium (effect= -40.3236, 95% CI= [-63.7151, -16.9321]). The indirect effects of age on sodium intake through preference of salty food (effect= .7033, 95% CI = [-2.3361, 4.5357]) and enjoyment of SRD (effect = -.0271, 95% CI = [ -3.2736, 2.2213]) were not significant, indicating that these factors did not mediate the relationship between age and dietary sodium consumption. When we controlled gender, education, and ethnicity, age was also associated with sodium intake, but the two indirect effects were not significant.
Conclusion
Although most patients consumed foods high in sodium, older patients were more likely to consume foods lower in salt. However, contrary to what we expected, preference for salty foods and enjoyment of SRD did not play mediator roles in the association of age with salt consumption. The findings suggest that older adults may need different types of intervention to promote adherence than younger patients. Further research is needed to explore other factors related to SRD (e.g., efficacy of SRD or perceived control of diet behaviors) that affect sodium intake in patients with HF.
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Affiliation(s)
- ML Chung
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - DK Moser
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - JL Miller
- University of Kentucky, College of Nursing, Lexington, United States of America
| | - TA Lennie
- University of Kentucky, College of Nursing, Lexington, United States of America
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9
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Chambers CB, Gross J, Pratt K, Guo X, Byrnes C, Lee YT, Lavelle D, Dean A, Miller JL, Wilber A. The mRNA-Binding Protein IGF2BP1 Restores Fetal Hemoglobin in Cultured Erythroid Cells from Patients with β-Hemoglobin Disorders. Mol Ther Methods Clin Dev 2020; 17:429-440. [PMID: 32154328 PMCID: PMC7056608 DOI: 10.1016/j.omtm.2020.01.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 01/22/2020] [Indexed: 12/12/2022]
Abstract
Sickle cell disease (SCD) and β-thalassemia are caused by structural abnormality or inadequate production of adult hemoglobin (HbA, α2β2), respectively. Individuals with either disorder are asymptomatic before birth because fetal hemoglobin (HbF, α2γ2) is unaffected. Thus, reversal of the switch from HbF to HbA could reduce or even prevent symptoms these disorders. In this study, we show that insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) is one factor that could accomplish this goal. IGF2BP1 is a fetal factor that undergoes a transcriptional switch consistent with the transition from HbF to HbA. Lentivirus delivery of IGF2BP1 to CD34+ cells of healthy adult donors reversed hemoglobin production toward the fetal type in culture-differentiated erythroid cells. Analogous studies using patient-derived CD34+ cells revealed that IGF2BP1-dependent HbF induction could ameliorate the chain imbalance in β-thalassemia or potently suppress expression of sickle β-globin in SCD. In all cases, fetal γ-globin mRNA increased and adult β-globin decreased due, in part, to formation of contacts between the locus control region (LCR) and γ-globin genes. We conclude that expression of IGF2BP1 in adult erythroid cells has the potential to maximize HbF expression in patients with severe β-hemoglobin disorders by reversing the developmental γ- to β-globin switch.
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Affiliation(s)
- Christopher B Chambers
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
| | - Jeffrey Gross
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
| | - Katherine Pratt
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
| | - Xiang Guo
- Laboratory of Cellular and Developmental Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Colleen Byrnes
- Genetics of Development and Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Y Terry Lee
- Genetics of Development and Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Donald Lavelle
- Section of Hematology/Oncology, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA.,Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Ann Dean
- Laboratory of Cellular and Developmental Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jeffery L Miller
- Genetics of Development and Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Andrew Wilber
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA.,Simmons Cancer Institute, Springfield, IL 62702, USA
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10
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Faden MS, Rosner M, Miller JL, Baschat AA. Vascular transfer of lidocaine between monochorionic twins with no apparent signs. Ultrasound Obstet Gynecol 2019; 53:850. [PMID: 30740791 DOI: 10.1002/uog.20237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 06/09/2023]
Affiliation(s)
- M S Faden
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Rosner
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J L Miller
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A A Baschat
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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11
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Varni JW, Delamater AM, Hood KK, Raymond JK, Chang NT, Driscoll KA, Wong JC, Yi-Frazier JP, Grishman EK, Faith MA, Corathers SD, Kichler JC, Miller JL, Doskey EM, Aguirre VP, Heffer RW, Wilson DP. Pediatric Quality of Life Inventory (PedsQL) 3.2 Diabetes Module for youth with Type 2 diabetes: reliability and validity. Diabet Med 2019; 36:465-472. [PMID: 30343524 DOI: 10.1111/dme.13841] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/18/2018] [Indexed: 12/26/2022]
Abstract
AIM To test the measurement properties of the revised and updated Pediatric Quality of Life Inventory (PedsQL) 3.2 Diabetes Module originally developed in Type 1 diabetes in youth with Type 2 diabetes. METHODS The PedsQL 3.2 Diabetes Module and PedsQL Generic Core Scales were administered in a field test study to 100 young people aged 9-25 years with Type 2 diabetes. Factor analysis was conducted to determine the factor structure of the items. RESULTS The 15-item Diabetes Symptoms Summary Score and 12-item Type 2-specific Diabetes Management Summary Score were empirically derived through factor analysis. The Diabetes Symptoms and Type 2-specific Diabetes Management Summary Scores showed acceptable to excellent reliability across the age groups tested (α = 0.85-0.94). The Diabetes Symptoms and Type 2-specific Diabetes Management Summary Scores evidenced construct validity through large effect size correlations with the Generic Core Scales Total Scale Score (r = 0.67 and 0.57, respectively). HbA1c was correlated with the Diabetes Symptoms and Type 2-specific Diabetes Management Summary Scores (r = -0.13 and -0.22). Minimal clinically important difference (MCID) scores were 5.91 and 7.39 for the Diabetes Symptoms and Type 2-specific Diabetes Management Summary Scores. CONCLUSIONS The PedsQL 3.2 Diabetes Module Diabetes Symptoms Summary Score and Type 2-specific Diabetes Management Summary Score exhibited satisfactory measurement properties for use as youth self-reported diabetes symptoms and diabetes management outcomes for clinical research and clinical practice for young people with Type 2 diabetes.
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Affiliation(s)
- J W Varni
- Department of Pediatrics, College of Medicine and Department of Landscape Architecture and Urban Planning, College of Architecture, Texas A&M University, College Station, TX
| | - A M Delamater
- Department of Pediatrics, Mailman Center for Child Development, University of Miami Miller School of Medicine, Miami, FL
| | - K K Hood
- Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA
| | - J K Raymond
- Center for Endocrinology, Diabetes, & Metabolism, Children's Hospital Los Angeles, Los Angeles, CA
| | - N T Chang
- Center for Endocrinology, Diabetes, & Metabolism, Children's Hospital Los Angeles, Los Angeles, CA
| | - K A Driscoll
- Department of Pediatrics, Barbara Davis Center for Diabetes, University of Colorado Denver, Denver, CO
| | - J C Wong
- The Madison Clinic for Pediatric Diabetes and Department of Pediatrics, Division of Endocrinology, University of California San Francisco, San Francisco, CA
| | | | - E K Grishman
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Texas Southwestern Medical Center, Dallas, TX
| | - M A Faith
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Texas Southwestern Medical Center, Dallas, TX
| | - S D Corathers
- Department of Pediatrics, Division of Endocrinology, Cincinnati, OH
| | - J C Kichler
- Department of Pediatrics, Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH
| | - J L Miller
- Division of Pediatric Endocrinology, Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - E M Doskey
- Department of Educational Psychology, Texas A&M University, College Station, College Station, TX
| | - V P Aguirre
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, College Station, TX
| | - R W Heffer
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, College Station, TX
| | - D P Wilson
- Cook Children's Medical Center, Fort Worth, TX, USA
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Chen SA, Ong CS, Hibino N, Baschat AA, Garcia JR, Miller JL. 3D printing of fetal heart using 3D ultrasound imaging data. Ultrasound Obstet Gynecol 2018; 52:808-809. [PMID: 29947039 DOI: 10.1002/uog.19166] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Affiliation(s)
- S A Chen
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins Hospital, Baltimore, MD, USA
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
- Department of Art as Applied to Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - C S Ong
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins Hospital, Baltimore, MD, USA
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
| | - N Hibino
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
| | - A A Baschat
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins Hospital, Baltimore, MD, USA
| | - J R Garcia
- Department of Art as Applied to Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J L Miller
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins Hospital, Baltimore, MD, USA
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13
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Baschat AA, Dewberry D, Seravalli V, Miller JL, Block-Abraham D, Blitzer MG. Maternal blood-pressure trends throughout pregnancy and development of pre-eclampsia in women receiving first-trimester aspirin prophylaxis. Ultrasound Obstet Gynecol 2018; 52:728-733. [PMID: 29266502 DOI: 10.1002/uog.18992] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 07/08/2017] [Revised: 10/14/2017] [Accepted: 12/08/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVES To study women who initiated aspirin in the first trimester for high risk of pre-eclampsia, and compare blood-pressure trends throughout pregnancy between those with normal outcome and those who subsequently developed pre-eclampsia. METHODS Women were enrolled into a prospective observational study at 9-14 weeks' gestation. This was a secondary analysis of those who started daily doses of 81 mg of aspirin before 16 weeks for increased risk of pre-eclampsia based on maternal history and bilateral uterine artery notching. Enrollment characteristics and blood-pressure measurements throughout gestation were compared between women who did and those who did not develop pre-eclampsia. RESULTS Of the 237 women who initiated first-trimester aspirin prophylaxis, 29 (12.2%) developed pre-eclampsia. A total of 2881 serial blood-pressure measurements obtained between 4 and 41 weeks' gestation (747 in the first trimester, 1008 in the second and 1126 in the third) showed that women with pre-eclampsia started pregnancy with higher blood pressure and maintained this trend despite taking aspirin (mean arterial blood pressure in women with pre-eclampsia = (0.13 × gestational age (weeks)) + 93.63, vs (0.11 × gestational age (weeks)) + 82.61 in those without; P < 0.005). First-trimester diastolic and second-trimester systolic blood pressure were independent risk factors for pre-eclampsia (β = 1.087 and 1.050, respectively; r2 = 0.24, P < 0.0001). When average first-trimester diastolic blood pressure was >74 mmHg, the odds ratio for pre-eclampsia was 6.5 (95% CI, 2.8-15.1; P < 0.001) and that for pre-eclampsia before 34 weeks was 14.6 (95% CI, 1.72-123.5; P = 0.004). If, in addition, average second-trimester systolic blood pressure was >125 mmHg, the odds ratio for pre-eclampsia was 9.4 (95% CI, 4.1-22.4; P < 0.001) and that for early-onset disease was 34.6 (95% CI, 4.1-296.4; P = 0.004). CONCLUSION In women treated with prophylactic aspirin from the first trimester, those who develop pre-eclampsia have significantly and sustained higher blood pressure from the onset of pregnancy compared with those who do not develop pre-eclampsia. This raises the possibility that mildly elevated blood pressure predisposes women to abnormal placentation, which then acts synergistically with elevated blood pressure to predispose such women to pre-eclampsia to a degree that is incompletely mitigated by aspirin. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- A A Baschat
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - D Dewberry
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - V Seravalli
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J L Miller
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - D Block-Abraham
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - M G Blitzer
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
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14
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Montemayor-Garcia C, Karagianni P, Stiles DA, Reese EM, Smellie DA, Loy DA, Levy KY, Nwokocha M, Bueno MU, Miller JL, Klein HG. Genomic coordinates and continental distribution of 120 blood group variants reported by the 1000 Genomes Project. Transfusion 2018; 58:2693-2704. [PMID: 30312480 DOI: 10.1111/trf.14953] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/25/2018] [Accepted: 07/13/2018] [Indexed: 01/25/2023]
Abstract
BACKGROUND The 1000 Genomes Project provides a database of genomic variants from whole genome sequencing of 2504 individuals across five continental superpopulations. This database can enrich our background knowledge of worldwide blood group variant geographic distribution and identify novel variants of potential clinical significance. STUDY DESIGN AND METHODS The 1000 Genomes database was analyzed to 1) expand knowledge about continental distributions of known blood group variants, 2) identify novel variants with antigenic potential and their geographic association, and 3) establish a baseline scaffold of chromosomal coordinates to translate next-generation sequencing output files into a predicted red blood cell (RBC) phenotype. RESULTS Forty-two genes were investigated. A total of 604 known variants were mapped to the GRCh37 assembly; 120 of these were reported by 1000 Genomes in at least one superpopulation. All queried variants, including the ACKR1 promoter silencing mutation, are located within exon pull-down boundaries. The analysis yielded 41 novel population distributions for 34 known variants, as well as 12 novel blood group variants that warrant further validation and study. Four prediction algorithms collectively flagged 79 of 109 (72%) known antigenic or enzymatically detrimental blood group variants, while 4 of 12 variants that do not result in an altered RBC phenotype were flagged as deleterious. CONCLUSION Next-generation sequencing has known potential for high-throughput and extended RBC phenotype prediction; a database of GRCh37 and GRCh38 chromosomal coordinates for 120 worldwide blood group variants is provided as a basis for this clinical application.
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Affiliation(s)
- Celina Montemayor-Garcia
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | | | - David A Stiles
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Erika M Reese
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Danielle A Smellie
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Debrean A Loy
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Kimberly Y Levy
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Magdalene Nwokocha
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Marina U Bueno
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Jeffery L Miller
- Genetics of Development and Disease Branch, NIDDK, National Institutes of Health, Bethesda, Maryland
| | - Harvey G Klein
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
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15
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Baschat AA, Miller JL. Reply. Ultrasound Obstet Gynecol 2018; 52:412. [PMID: 30022562 DOI: 10.1002/uog.19162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- A A Baschat
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J L Miller
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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16
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Baschat AA, Ahn ES, Murphy J, Miller JL. Fetal blood-gas values during fetoscopic myelomeningocele repair performed under carbon dioxide insufflation. Ultrasound Obstet Gynecol 2018; 52:400-402. [PMID: 29750436 DOI: 10.1002/uog.19083] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 03/21/2018] [Revised: 04/30/2018] [Accepted: 05/01/2018] [Indexed: 06/08/2023]
Abstract
Fetoscopic myelomeningocele (MMC) repair is performed using intrauterine carbon dioxide (CO2 ) insufflation. Sheep experiments have shown that CO2 insufflation is associated with significant fetal acidemia; however, corresponding data for human pregnancy are not available. We performed umbilical venous cord blood sampling in three patients during fetoscopic MMC repair at 25 + 1, 25 + 3 and 24 + 0 weeks' gestation, respectively. Fetal venous pH at the beginning of CO2 insufflation was 7.36, 7.46 and 7.37, respectively in the three fetuses, and repeat values were 7.28, 7.35 and 7.36 after 181, 159 and 149 min, respectively. The partial pressure of oxygen and CO2 was maintained in the normal range during these times, and pH decrease was less in Patient 3 who received humidified CO2 insufflation. Our observations suggest that, in contrast to sheep experiments, CO2 insufflation during fetoscopic myelomeningocele repair does not cause acidemia in human fetuses. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- A A Baschat
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - E S Ahn
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J Murphy
- Division of Obstetric Anesthesiology, Department of Anesthesia & Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J L Miller
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
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17
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Miller JL, Ahn ES, Garcia JR, Miller GT, Satin AJ, Baschat AA. Ultrasound-based three-dimensional printed medical model for multispecialty team surgical rehearsal prior to fetoscopic myelomeningocele repair. Ultrasound Obstet Gynecol 2018; 51:836-837. [PMID: 28850758 DOI: 10.1002/uog.18891] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/11/2017] [Accepted: 08/18/2017] [Indexed: 06/07/2023]
Affiliation(s)
- J L Miller
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, 600 North Wolfe Street, Nelson 228, Baltimore, MD, 21287, USA
| | - E S Ahn
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J R Garcia
- Department of Art as Applied to Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - G T Miller
- Medical Modeling & Simulation Innovation Center, Telemedicine and Advanced Technology Research Center, United States Army Medical Research and Materiel Command, Fort Detrick, MD, USA
| | - A J Satin
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, 600 North Wolfe Street, Nelson 228, Baltimore, MD, 21287, USA
| | - A A Baschat
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins School of Medicine, 600 North Wolfe Street, Nelson 228, Baltimore, MD, 21287, USA
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18
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Rock KR, Millard S, Seravalli V, McShane C, Kearney J, Seitz E, Baschat AA, Miller JL. Discordant anomalies and karyotype in a monochorionic twin pregnancy: a call for comprehensive genetic evaluation. Ultrasound Obstet Gynecol 2017; 49:544-545. [PMID: 27255445 DOI: 10.1002/uog.15985] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 05/20/2016] [Accepted: 05/27/2016] [Indexed: 06/05/2023]
Affiliation(s)
- K R Rock
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - S Millard
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - V Seravalli
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - C McShane
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - J Kearney
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - E Seitz
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - A A Baschat
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
| | - J L Miller
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 255, Baltimore, MD, 21287, USA
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19
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Nelson AW, Groen AJ, Miller JL, Warren AY, Holmes KA, Tarulli GA, Tilley WD, Katzenellenbogen BS, Hawse JR, Gnanapragasam VJ, Carroll JS. Corrigendum to "Comprehensive assessment of estrogen receptor beta antibodies in cancer cell line models and tissue reveals critical limitations in reagent specificity" [Mol. Cell Endocrinol. 440 (2016) 138-150]. Mol Cell Endocrinol 2017; 443:175. [PMID: 28183459 PMCID: PMC6854450 DOI: 10.1016/j.mce.2017.01.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A W Nelson
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK; Academic Urology Group, Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK; Department of Urology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK
| | - A J Groen
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK
| | - J L Miller
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK
| | - A Y Warren
- Department of Histopathology, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK
| | - K A Holmes
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK
| | - G A Tarulli
- Dame Roma Mitchell Cancer Research Laboratories, Hanson Institute Building, School of Medicine, Faculty of Health Sciences, The University of Adelaide, SA 5005, Australia
| | - W D Tilley
- Dame Roma Mitchell Cancer Research Laboratories, Hanson Institute Building, School of Medicine, Faculty of Health Sciences, The University of Adelaide, SA 5005, Australia
| | - B S Katzenellenbogen
- Departments of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - J R Hawse
- Department of Urology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK; Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA
| | - V J Gnanapragasam
- Department of Urology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK
| | - J S Carroll
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK.
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de Vasconcellos JF, Lee YT, Byrnes C, Tumburu L, Rabel A, Miller JL. HMGA2 Moderately Increases Fetal Hemoglobin Expression in Human Adult Erythroblasts. PLoS One 2016; 11:e0166928. [PMID: 27861570 PMCID: PMC5115839 DOI: 10.1371/journal.pone.0166928] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 04/04/2016] [Accepted: 11/07/2016] [Indexed: 02/02/2023] Open
Abstract
Induction of fetal hemoglobin (HbF) has therapeutic importance for patients with beta-hemoglobin disorders. Previous studies showed that let-7 microRNAs (miRNAs) are highly regulated in erythroid cells during the fetal-to-adult developmental transition, and that targeting let-7 mediated the up-regulation of HbF to greater than 30% of the total globin levels in human adult cultured erythroblasts. HMGA2 is a member of the high-mobility group A family of proteins and a validated target of the let-7 family of miRNAs. Here we investigate whether expression of HMGA2 directly regulates fetal hemoglobin in adult erythroblasts. Let-7 resistant HMGA2 expression was studied after lentiviral transduction of CD34(+) cells. The transgene was regulated by the erythroid-specific gene promoter region of the human SPTA1 gene (HMGA2-OE). HMGA2-OE caused significant increases in gamma-globin mRNA expression and HbF to around 16% of the total hemoglobin levels compared to matched control transductions. Interestingly, no significant changes in KLF1, SOX6, GATA1, ZBTB7A and BCL11A mRNA levels were observed. Overall, our data suggest that expression of HMGA2, a downstream target of let-7 miRNAs, causes moderately increased gamma-globin gene and protein expression in adult human erythroblasts.
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Affiliation(s)
- Jaira F. de Vasconcellos
- Molecular Genomics and Therapeutics Section, Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Y. Terry Lee
- Molecular Genomics and Therapeutics Section, Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Colleen Byrnes
- Molecular Genomics and Therapeutics Section, Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Laxminath Tumburu
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Antoinette Rabel
- Molecular Genomics and Therapeutics Section, Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Jeffery L. Miller
- Molecular Genomics and Therapeutics Section, Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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21
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Kaushal M, Byrnes C, Khademian Z, Duncan N, Luban NLC, Miller JL, Fasano RM, Meier ER. Examination of Reticulocytosis among Chronically Transfused Children with Sickle Cell Anemia. PLoS One 2016; 11:e0153244. [PMID: 27116614 PMCID: PMC4845996 DOI: 10.1371/journal.pone.0153244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 01/19/2016] [Accepted: 03/27/2016] [Indexed: 11/21/2022] Open
Abstract
Sickle cell anemia (SCA) is an inherited hemolytic anemia with compensatory reticulocytosis. Recent studies have shown that increased levels of reticulocytosis during infancy are associated with increased hospitalizations for SCA sequelae as well as cerebrovascular pathologies. In this study, absolute reticulocyte counts (ARC) measured prior to transfusion were analysed among a cohort of 29 pediatric SCA patients receiving chronic transfusion therapy (CTT) for primary and secondary stroke prevention. A cross-sectional flow cytometric analysis of the reticulocyte phenotype was also performed. Mean duration of CTT was 3.1 ± 2.6 years. Fifteen subjects with magnetic resonance angiography (MRA) -vasculopathy had significantly higher mean ARC prior to initiating CTT compared to 14 subjects without MRA-vasculopathy (427.6 ± 109.0 K/μl vs. 324.8 ± 109.2 K/μl, p<0.05). No significant differences in hemoglobin or percentage sickle hemoglobin (HbS) were noted between the two groups at baseline. Reticulocyte phenotyping further demonstrated that the percentages of circulating immature [CD36(+), CD71(+)] reticulocytes positively correlated with ARC in both groups. During the first year of CTT, neither group had significant reductions in ARC. Among this group of children with SCA, cerebrovasculopathy on MRA at initiation of CTT was associated with increased reticulocytosis, which was not reduced after 12 months of transfusions.
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Affiliation(s)
- Megha Kaushal
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- Center for Cancer and Blood Disorders, Children’s National Health System, Washington, D.C., United States of America
- Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
| | - Colleen Byrnes
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Zarir Khademian
- Division of Diagnostic Imaging and Radiology, Children’s National Health System, Washington, D.C., United States of America
| | - Natalie Duncan
- Indiana Hemophilia and Thrombosis Center, Indianapolis, Indiana, United States of America
| | - Naomi L. C. Luban
- Center for Cancer and Blood Disorders, Children’s National Health System, Washington, D.C., United States of America
- Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
| | - Jeffery L. Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Ross M. Fasano
- Center for Cancer and Blood Disorders, Children’s National Health System, Washington, D.C., United States of America
- Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
| | - Emily Riehm Meier
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- Center for Cancer and Blood Disorders, Children’s National Health System, Washington, D.C., United States of America
- Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
- * E-mail:
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22
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Seravalli V, Millard S, Kearney J, Miller JL, Baschat AA. Prenatal ultrasound and Doppler findings of progressing portal hypertension in a fetus with congenital cystic hepatobiliary disease. Ultrasound Obstet Gynecol 2016; 47:239-241. [PMID: 26138679 DOI: 10.1002/uog.14939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/14/2015] [Accepted: 06/29/2015] [Indexed: 06/04/2023]
Affiliation(s)
- V Seravalli
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 228, Baltimore, MD 21287, USA
| | - S Millard
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 228, Baltimore, MD 21287, USA
| | - J Kearney
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 228, Baltimore, MD 21287, USA
| | - J L Miller
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 228, Baltimore, MD 21287, USA
| | - A A Baschat
- The Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, 600 North Wolfe Street, Nelson 228, Baltimore, MD 21287, USA
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23
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Lee YT, de Vasconcellos JF, Byrnes C, Kaushal M, Rabel A, Tumburu L, Allwardt JM, Miller JL. Erythroid-Specific Expression of LIN28A Is Sufficient for Robust Gamma-Globin Gene and Protein Expression in Adult Erythroblasts. PLoS One 2015; 10:e0144977. [PMID: 26675483 PMCID: PMC4684222 DOI: 10.1371/journal.pone.0144977] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 09/25/2015] [Accepted: 11/25/2015] [Indexed: 01/10/2023] Open
Abstract
Increasing fetal hemoglobin (HbF) levels in adult humans remains an active area in hematologic research. Here we explored erythroid-specific LIN28A expression for its effect in regulating gamma-globin gene expression and HbF levels in cultured adult erythroblasts. For this purpose, lentiviral transduction vectors were produced with LIN28A expression driven by erythroid-specific gene promoter regions of the human KLF1 or SPTA1 genes. Transgene expression of LIN28A with a linked puromycin resistance marker was restricted to the erythroid lineage as demonstrated by selective survival of erythroid colonies (greater than 95% of all colonies). Erythroblast LIN28A over-expression (LIN28A-OE) did not significantly affect proliferation or inhibit differentiation. Greater than 70% suppression of total let-7 microRNA levels was confirmed in LIN28A-OE cells. Increases in gamma-globin mRNA and protein expression with HbF levels reaching 30-40% were achieved. These data suggest that erythroblast targeting of LIN28A expression is sufficient for increasing fetal hemoglobin expression in adult human erythroblasts.
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Affiliation(s)
- Y. Terry Lee
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Jaira F. de Vasconcellos
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Colleen Byrnes
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Megha Kaushal
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Antoinette Rabel
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Laxminath Tumburu
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Joshua M. Allwardt
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Jeffery L. Miller
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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Stroncek DF, Tran M, Frodigh SE, David-Ocampo V, Ren J, Larochelle A, Sheikh V, Sereti I, Miller JL, Longin K, Sabatino M. Preliminary evaluation of a highly automated instrument for the selection of CD34+ cells from mobilized peripheral blood stem cell concentrates. Transfusion 2015; 56:511-7. [PMID: 26505619 DOI: 10.1111/trf.13394] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 08/07/2015] [Accepted: 08/13/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND Cell selection is an important part of manufacturing cellular therapies. A new highly automated instrument, the CliniMACS Prodigy (Miltenyi Biotec), was evaluated for the selection of CD34+ cells from mobilized peripheral blood stem cell (PBSC) concentrates using monoclonal antibodies conjugated to paramagnetic particles. STUDY DESIGN AND METHODS PBSCs were collected by apheresis from 36 healthy subjects given granulocyte-colony-stimulating factor (G-CSF) or G-CSF plus plerixafor. CD34+ cells from 11 PBSC concentrates were isolated with the automated CliniMACS Prodigy and 25 with the semiautomated CliniMACS Plus Instrument. RESULTS The proportion of CD34+ cells in the selected products obtained with the two instruments was similar: 93.6 ± 2.6% for the automated and 95.7 ± 3.3% for the semiautomated instrument (p > 0.05). The recovery of CD34+ cells from PBSC concentrates was less for the automated than the semiautomated instrument (51.4 ± 8.2% vs. 65.1 ± 15.7%; p = 0.019). The selected products from both instruments contained few and similar quantities of platelets (PLTs) and red blood cells. The depletion of CD3+ cells was less with the automated instrument (4.34 ± 0.2 log depletion vs. 5.20 ± 0.35 log depletion; p < 1 × 10(-6) ). Removal of PLTs from PBSC concentrates by washing was associated with better CD34+ cell recovery. We explored the reasons for lower CD34+ cell recovery by the Prodigy and found that the nonselected cells for the Prodigy contained more PLTs than those for the CliniMACS Plus. CONCLUSIONS CD34+ cells can be effectively selected from mobilized PBSC concentrates with the CliniMAC Prodigy, but the recovery of CD34+ cells and depletion of CD3+ cells was lower than with the semiautomated CliniMACS Plus Instrument.
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Affiliation(s)
- David F Stroncek
- Cell Processing Section, Department of Transfusion Medicine, Clinical Center
| | - Minh Tran
- Cell Processing Section, Department of Transfusion Medicine, Clinical Center
| | - Sue Ellen Frodigh
- Cell Processing Section, Department of Transfusion Medicine, Clinical Center
| | | | - Jiaqiang Ren
- Cell Processing Section, Department of Transfusion Medicine, Clinical Center
| | | | - Virginia Sheikh
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases
| | - Irini Sereti
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases
| | - Jeffery L Miller
- Molecular Genomics and Therapeutics Section, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | | | - Marianna Sabatino
- Cell Processing Section, Department of Transfusion Medicine, Clinical Center
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25
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Ukrainski MB, Pribitkin EA, Miller JL. Increasing Incidence of Thyroid Nodules and Thyroid Cancer: Does Increased Detection of a Subclinical Reservoir Justify the Associated Anxiety and Treatment? Clin Ther 2015; 38:976-85. [PMID: 26434793 DOI: 10.1016/j.clinthera.2015.07.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/10/2015] [Accepted: 07/16/2015] [Indexed: 02/04/2023]
Abstract
The incidence of thyroid cancer has been increasing over the last few decades, and it is subject to debate regarding whether the incidence is reflective of better diagnostic techniques and therefore better detection or if it is a reflection of a true increase in incidence. This increase in incidence has been most clearly manifested by an exponential increase in the diagnosis of micropapillary thyroid carcinomas. This article reviews the diagnosis of thyroid cancers, the dilemmas facing clinicians in the management of these micropapillary thyroid carcinomas, and the advances in molecular diagnostics that are being used to assist in the decision-making process. We consider the possibility of overtreatment of a relatively indolent disease and propose a less aggressive management plan in the appropriate clinical scenario.
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Affiliation(s)
- Melinda B Ukrainski
- Division of Endocrinology, Diabetes & Metabolic Diseases, Sidney Kimmel Medical College at Thomas Jefferson University and Hospital, Philadelphia, Pennsylvania.
| | - E A Pribitkin
- Department of Otolaryngology, Sidney Kimmel Medical College at Thomas Jefferson University and Hospital, Philadelphia, Pennsylvania
| | - J L Miller
- Division of Endocrinology, Diabetes & Metabolic Diseases, Sidney Kimmel Medical College at Thomas Jefferson University and Hospital, Philadelphia, Pennsylvania
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26
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Meier ER, Byrnes C, Weissman M, Lee YT, Miller JL. Absolute Reticulocyte Count Acts as a Surrogate for Fetal Hemoglobin in Infants and Children with Sickle Cell Anemia. PLoS One 2015; 10:e0136672. [PMID: 26366562 PMCID: PMC4569336 DOI: 10.1371/journal.pone.0136672] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 06/16/2015] [Accepted: 08/05/2015] [Indexed: 11/18/2022] Open
Abstract
Hemoglobin switching is largely complete in humans by six months of age. Among infants with sickle cell anemia (HbSS, SCA), reticulocytosis begins early in life as fetal hemoglobin (HbF) is replaced by sickle hemoglobin (HbS). The objective of this study was to determine if absolute reticulocyte count (ARC) is related to HbF levels in a cohort of pediatric SCA patients. A convenience sample of 106 children with SCA between the ages of 1 month and 20 years who were not receiving hydroxyurea or monthly blood transfusions were enrolled in this observational study. Hematologic data, including ARC and HbF levels, were measured at steady state. F-cells were enumerated by flow cytometry. Initial studies compared infants with ARC greater than or equal to 200 K/μL (ARC ≥ 200) based upon the previously reported utility of this threshold as a predictive marker for SCA severity. Mean HbF and F-cell levels were significantly lower in the ARC ≥ 200 group when compared to the ARC < 200 group. Both HbF and F-cell percentages were negatively correlated to ARC in infants and in children between the ages of 1 and 9 years. However, the inverse relationship was lost after the age of 10 years. Overall, decreased expression and distribution of HbF during childhood SCA is well-correlated with increased reticulocyte production and release into the peripheral blood. As such, these data further support the clinical use of reticulocyte enumeration as a disease severity biomarker for childhood sickle cell anemia.
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Affiliation(s)
- Emily Riehm Meier
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- Center for Cancer and Blood Disorders, Children’s National Medical Center, Washington, D.C., United States of America
- Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
| | - Colleen Byrnes
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Maxine Weissman
- Laboratory Medicine Department, Hematology Service, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Y. Terry Lee
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Jeffery L. Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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27
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Abstract
BACKGROUND AND PURPOSE The study aims to review a condition defined by the desire to consume ice in order to satisfy an addictive-like compulsion, rather than for purposes of hydration or pain relief. This condition is called ice pica, or pagophagia. Associations between ice pica and iron deficiency, suggestions for clinical screening of at risk populations, and recommendations for treatment and follow-up care are provided. DATA SOURCES An extensive literature review of original research articles, reviews, clinical practice manuscripts, and scientific publications on pica and pagophagia. CONCLUSIONS A compulsion or craving for the consumption of ice is often overlooked in clinical practice. It is therefore important for clinicians to include ice pica as part of the review of systems for certain patient populations. Ice pica is frequently associated with iron deficiency, and iron supplementation is an effective therapy in most cases. IMPLICATIONS FOR PRACTICE Knowledge gained from screening for ice pica can generate valuable patient information and lead to the diagnosis and treatment of iron deficiency. The populations at risk include young women and blood donors of either sex.
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Affiliation(s)
- Antoinette Rabel
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Susan F Leitman
- NIH Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Jeffery L Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
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28
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Doss GA, Miller JL, Steinberg H, Mans C. Angiofibroma in a cockatiel (Nymphicus hollandicus). J Comp Pathol 2015; 152:274-7. [PMID: 25728811 DOI: 10.1016/j.jcpa.2014.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 12/19/2014] [Accepted: 12/30/2014] [Indexed: 10/23/2022]
Abstract
Human angiofibromas are rare and arise typically in the nasopharynx. In veterinary medicine they have only been described in the dog. Microscopically, angiofibromas consist of irregular groups of blood vessels within a stroma of connective tissue, with oedema and secondary inflammation often present. A cockatiel (Nymphicus hollandicus) was presented with an oral mass that consisted of aggregates of blood vessels surrounded by a connective tissue stroma, with the presence of oedema and secondary inflammation. Tumours of the oral cavity are uncommon in birds and to the authors' knowledge this is the first case of avian angiofibroma.
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Affiliation(s)
- G A Doss
- Department of Surgical Sciences, University of Wisconsin-Madison School of Veterinary Medicine, 2015 Linden Drive, Madison, WI, USA.
| | - J L Miller
- Department of Pathobiological Sciences, University of Wisconsin-Madison School of Veterinary Medicine, 2015 Linden Drive, Madison, WI, USA
| | - H Steinberg
- Department of Pathobiological Sciences, University of Wisconsin-Madison School of Veterinary Medicine, 2015 Linden Drive, Madison, WI, USA
| | - C Mans
- Department of Surgical Sciences, University of Wisconsin-Madison School of Veterinary Medicine, 2015 Linden Drive, Madison, WI, USA
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29
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Whitaker HC, Shiong LL, Kay JD, Grönberg H, Warren AY, Seipel A, Wiklund F, Thomas B, Wiklund P, Miller JL, Menon S, Ramos-Montoya A, Vowler SL, Massie C, Egevad L, Neal DE. N-acetyl-L-aspartyl-L-glutamate peptidase-like 2 is overexpressed in cancer and promotes a pro-migratory and pro-metastatic phenotype. Oncogene 2014; 33:5274-87. [PMID: 24240687 DOI: 10.1038/onc.2013.464] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 08/27/2013] [Accepted: 09/16/2013] [Indexed: 02/02/2023]
Abstract
N-acetyl-L-aspartyl-L-glutamate peptidase-like 2 (NAALADL2) is a member of the glutamate carboxypeptidase II family, best characterized by prostate-specific membrane antigen (PSMA/NAALAD1). Using immunohistochemistry (IHC), we have shown overexpression of NAALADL2 in colon and prostate tumours when compared with benign tissue. In prostate cancer, NAALADL2 expression was associated with stage and Grade, as well as circulating mRNA levels of the NAALADL2 gene. Overexpression of NAALADL2 was shown to predict poor survival following radical prostatectomy. In contrast to PSMA/NAALAD1, NAALADL2 was localized at the basal cell surface where it promotes adhesion to extracellular matrix proteins. Using stable knockdown and overexpression cell lines, we have demonstrated NAALADL2-dependent changes in cell migration, invasion and colony-forming potential. Expression arrays of the knockdown and overexpression cell lines have identified nine genes that co-expressed with NAALADL2, which included membrane proteins and genes known to be androgen regulated, including the prostate cancer biomarkers AGR2 and SPON2. Androgen regulation was confirmed in a number of these genes, although NAALADL2 itself was not found to be androgen regulated. NAALADL2 was also found to regulate levels of Ser133 phosphorylated C-AMP-binding protein (CREB), a master regulator of a number of cellular processes involved in cancer development and progression. In combination, these data suggest that changes in expression of NAALADL2 can impact upon a number of pro-oncogenic pathways and processes, making it a useful biomarker for both diagnosis and prognosis.
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Affiliation(s)
- H C Whitaker
- 1] Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK [2] Cancer Research UK Biomarker Initiative, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - L L Shiong
- Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - J D Kay
- Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - H Grönberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - A Y Warren
- 1] Department of Histopathology and ISH Core Facility, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK [2] Department of Histopathology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - A Seipel
- Department of Pathology, Karolinska Institute, Stockholm, Sweden
| | - F Wiklund
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - B Thomas
- Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - P Wiklund
- Department of Pathology, Karolinska Institute, Stockholm, Sweden
| | - J L Miller
- 1] Department of Histopathology and ISH Core Facility, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK [2] Department of Histopathology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - S Menon
- Bioinformatics Core Facility, Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, UK
| | - A Ramos-Montoya
- Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - S L Vowler
- Bioinformatics Core Facility, Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, UK
| | - C Massie
- Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - L Egevad
- Department of Pathology, Karolinska Institute, Stockholm, Sweden
| | - D E Neal
- Uro-Oncology Research Group, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
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Hussain S, Miller JL, Harvey DJ, Gu Y, Rosenthal PB, Zitzmann N, McCauley JW. Strain-specific antiviral activity of iminosugars against human influenza A viruses. J Antimicrob Chemother 2014; 70:136-52. [PMID: 25223974 PMCID: PMC4267503 DOI: 10.1093/jac/dku349] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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] [Indexed: 01/13/2023] Open
Abstract
Objectives Drugs that target host cell processes can be employed to complement drugs that specifically target viruses, and iminosugar compounds that inhibit host α-glucosidases have been reported to show antiviral activity against multiple viruses. Here the effect and mechanism of two iminosugar α-glucosidase inhibitors, N-butyl-deoxynojirimycin (NB-DNJ) and N-nonyl-deoxynojirimycin (NN-DNJ), on human influenza A viruses was examined. Methods The viruses examined were a recently circulating seasonal influenza A(H3N2) virus strain A/Brisbane/10/2007, an older H3N2 strain A/Udorn/307/72, and A/Lviv/N6/2009, a strain representative of the currently circulating pandemic influenza A(H1N1)pdm09 virus. Results The inhibitors had the strongest effect on Brisbane/10 and NN-DNJ was more potent than NB-DNJ. Both compounds showed antiviral activity in cell culture against three human influenza A viruses in a strain-specific manner. Consistent with its action as an α-glucosidase inhibitor, NN-DNJ treatment resulted in an altered glycan processing of influenza haemagglutinin (HA) and neuraminidase (NA), confirmed by MS. NN-DNJ treatment was found to reduce the cell surface expression of the H3 subtype HA. The level of sialidase activity of NA was reduced in infected cells, but the addition of exogenous sialidase to the cells did not complement the NN-DNJ-mediated inhibition of virus replication. Using reassortant viruses, the drug susceptibility profile was determined to correlate with the origin of the HA. Conclusions NN-DNJ inhibits influenza A virus replication in a strain-specific manner that is dependent on the HA.
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Affiliation(s)
- S Hussain
- Division of Virology, Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, UK Division of Physical Biochemistry, Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, UK
| | - J L Miller
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - D J Harvey
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK Department of Biological Sciences, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, UK
| | - Y Gu
- Confocal Imaging and Analysis Laboratory, Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, UK
| | - P B Rosenthal
- Division of Physical Biochemistry, Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, UK
| | - N Zitzmann
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - J W McCauley
- Division of Virology, Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, UK
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31
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Porter JB, Walter PB, Neumayr LD, Evans P, Bansal S, Garbowski M, Weyhmiller MG, Harmatz PR, Wood JC, Miller JL, Byrnes C, Weiss G, Seifert M, Grosse R, Grabowski D, Schmidt A, Fischer R, Nielsen P, Niemeyer C, Vichinsky E. Mechanisms of plasma non-transferrin bound iron generation: insights from comparing transfused diamond blackfan anaemia with sickle cell and thalassaemia patients. Br J Haematol 2014; 167:692-6. [PMID: 25209728 DOI: 10.1111/bjh.13081] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 04/23/2014] [Indexed: 01/17/2023]
Abstract
In transfusional iron overload, extra-hepatic iron distribution differs, depending on the underlying condition. Relative mechanisms of plasma non-transferrin bound iron (NTBI) generation may account for these differences. Markers of iron metabolism (plasma NTBI, labile iron, hepcidin, transferrin, monocyte SLC40A1 [ferroportin]), erythropoiesis (growth differentiation factor 15, soluble transferrin receptor) and tissue hypoxia (erythropoietin) were compared in patients with Thalassaemia Major (TM), Sickle Cell Disease and Diamond-Blackfan Anaemia (DBA), with matched transfusion histories. The most striking differences between these conditions were relationships of NTBI to erythropoietic markers, leading us to propose three mechanisms of NTBI generation: iron overload (all), ineffective erythropoiesis (predominantly TM) and low transferrin-iron utilization (DBA).
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Affiliation(s)
- John B Porter
- Department of Haematology, University College London, London, UK
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Meier ER, Wright EC, Miller JL. Reticulocytosis and anemia are associated with an increased risk of death and stroke in the newborn cohort of the Cooperative Study of Sickle Cell Disease. Am J Hematol 2014; 89:904-6. [PMID: 24891147 DOI: 10.1002/ajh.23777] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 05/27/2014] [Indexed: 11/06/2022]
Abstract
Prior analyses of the Cooperative Study of Sickle Cell Disease (CSSCD) newborn cohort identified elevated white blood cell (WBC) count, low baseline hemoglobin and dactylitis between the ages of 1 and 2 years as markers of severe disease. Reticulocytosis was also associated with severe disease. Here, we further analyzed data collected on enrolled CSSCD infants for the predictive value of those markers for stroke and death later in life. Three hundred fifty-four CSSCD subjects were identified who had absolute reticulocyte counts (ARC) measured during infancy (2 to 6 months of age). Infants with higher ARC had significantly increased risk of stroke or death during childhood; lower hemoglobin levels also increased the risk but to a lesser degree than ARC. WBC levels and dactylitis were not predictive of death or stroke. These data suggest that reticulocytosis among asymptomatic infants with sickle cell anemia is associated with an increased risk of death or stroke during childhood.
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Affiliation(s)
- Emily Riehm Meier
- Molecular Medicine Branch; National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health; Bethesda Maryland 20892
- Center for Cancer and Blood Disorders; Children's National Medical Center; Washington D.C. 20010
- Department of Pediatrics; The George Washington University School of Medicine and Health Sciences; Washington D.C. 20037
| | - Elizabeth C. Wright
- Office of the Director; National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health; Bethesda Maryland 20892
| | - Jeffery L. Miller
- Molecular Medicine Branch; National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health; Bethesda Maryland 20892
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Glushakova S, Balaban A, McQueen PG, Coutinho R, Miller JL, Nossal R, Fairhurst RM, Zimmerberg J. Hemoglobinopathic erythrocytes affect the intraerythrocytic multiplication of Plasmodium falciparum in vitro. J Infect Dis 2014; 210:1100-9. [PMID: 24688070 DOI: 10.1093/infdis/jiu203] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The mechanisms by which α-thalassemia and sickle cell traits confer protection from severe Plasmodium falciparum malaria are not yet fully elucidated. We hypothesized that hemoglobinopathic erythrocytes reduce the intraerythrocytic multiplication of P. falciparum, potentially delaying the development of life-threatening parasite densities until parasite clearing immunity is achieved. METHODS We developed a novel in vitro assay to quantify the number of merozoites released from an individual schizont, termed the "intraerythrocytic multiplication factor" (IMF). RESULTS P. falciparum (3D7 line) schizonts produce variable numbers of merozoites in all erythrocyte types tested, with median IMFs of 27, 27, 29, 23, and 23 in control, HbAS, HbSS, and α- and β-thalassemia trait erythrocytes, respectively. IMF correlated strongly (r(2) = 0.97; P < .001) with mean corpuscular hemoglobin concentration, and varied significantly with mean corpuscular volume and hemoglobin content. Reduction of IMFs in thalassemia trait erythrocytes was confirmed using clinical parasite isolates with different IMFs. Mathematical modeling of the effect of IMF on malaria progression indicates that the lower IMF in thalassemia trait erythrocytes limits parasite density and anemia severity over the first 2 weeks of parasite replication. CONCLUSIONS P. falciparum IMF, a parasite heritable virulence trait, correlates with erythrocyte indices and is reduced in thalassemia trait erythrocytes. Parasite IMF should be examined in other low-indices erythrocytes.
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Affiliation(s)
- Svetlana Glushakova
- Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Development, National Institutes of Health
| | - Amanda Balaban
- Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Development, National Institutes of Health
| | - Philip G McQueen
- Mathematical and Statistical Computing Laboratory, Division of Computational Bioscience, Center for Information Technology, National Institutes of Health
| | - Rosane Coutinho
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health
| | - Jeffery L Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Ralph Nossal
- Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Development, National Institutes of Health
| | - Rick M Fairhurst
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Joshua Zimmerberg
- Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Development, National Institutes of Health
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Meier ER, Byrnes C, Lee YT, Wright EC, Schechter AN, Luban NLC, Miller JL. Increased reticulocytosis during infancy is associated with increased hospitalizations in sickle cell anemia patients during the first three years of life. PLoS One 2013; 8:e70794. [PMID: 23951011 PMCID: PMC3737358 DOI: 10.1371/journal.pone.0070794] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 03/07/2013] [Accepted: 06/25/2013] [Indexed: 11/18/2022] Open
Abstract
Objective Among older children with sickle cell anemia, leukocyte counts, hemoglobin, and reticulocytosis have previously been suggested as disease severity markers. Here we explored whether these blood parameters may be useful to predict early childhood disease severity when tested in early infancy, defined as postnatal ages 60–180 days. Study Design Data from fifty-nine subjects who were followed at Children’s National Medical Center’s Sickle Cell Program for at least three years was retrospectively analyzed. Comparisons were made between white blood cell counts, hemoglobin and reticulocyte levels measured at ages 60–180 days and the clinical course of sickle cell anemia during infancy and childhood. Results A majority of subjects had demonstrable anemia with increased reticulocytosis. Only increased absolute reticulocyte levels during early infancy were associated with a significant increase in hospitalization during the first three years of life. Higher absolute reticulocyte counts were also associated with a markedly shorter time to first hospitalizations and a four-fold higher cumulative frequency of clinical manifestations over the first three years of life. No significant increase in white blood cell counts was identified among the infant subjects. Conclusions These data suggest that during early infancy, increased reticulocytosis among asymptomatic SCA subjects is associated with increased severity of disease in childhood.
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Affiliation(s)
- Emily Riehm Meier
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- Center for Cancer and Blood Disorders, Children’s National Medical Center, Washington, District of Columbia, United States of America
- Department of Pediatrics, The George Washington University Medical Center, Washington, District of Columbia, United States of America
| | - Colleen Byrnes
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Y. Terry Lee
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Elizabeth C. Wright
- Office of the Director, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Alan N. Schechter
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Naomi L. C. Luban
- Center for Cancer and Blood Disorders, Children’s National Medical Center, Washington, District of Columbia, United States of America
- Department of Pediatrics, The George Washington University Medical Center, Washington, District of Columbia, United States of America
| | - Jeffery L. Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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Abstract
Iron deficiency anemia arises when the balance of iron intake, iron stores, and the body's loss of iron are insufficient to fully support production of erythrocytes. Iron deficiency anemia rarely causes death, but the impact on human health is significant. In the developed world, this disease is easily identified and treated, but frequently overlooked by physicians. In contrast, it is a health problem that affects major portions of the population in underdeveloped countries. Overall, the prevention and successful treatment for iron deficiency anemia remains woefully insufficient worldwide, especially among underprivileged women and children. Here, clinical and laboratory features of the disease are discussed, and then focus is placed on relevant economic, environmental, infectious, and genetic factors that converge among global populations.
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Affiliation(s)
- Jeffery L Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
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Imai DM, Miller JL, Leonard BC, Bach J, Drees R, Steinberg H, Teixeira LBC. Visceral smooth muscle α-actin deficiency associated with chronic intestinal pseudo-obstruction in a Bengal cat (Felis catus x Prionailurus bengalensis). Vet Pathol 2013; 51:612-8. [PMID: 23774747 DOI: 10.1177/0300985813492802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
An adult Bengal cat (Felis catus × Prionailurus bengalensis) with a prolonged history of partial anorexia, regurgitation, and weight loss and a clinical, radiographic, and ultrasonographic diagnosis of persistent megaesophagus and gastrointestinal ileus was submitted for necropsy. The intestinal tract was diffusely distended by gas and fluid with appreciable loss of muscle tone and an absence of luminal obstruction, consistent with the clinical history of chronic intestinal pseudo-obstruction. Histologically, the autonomic nervous system was intact, but the smooth muscle within the gastrointestinal wall exhibited a marked basophilia that was most pronounced in the jejunum. Immunohistochemistry for neurofilament, synaptophysin, CD117, and desmin demonstrated that the number of myenteric ganglia, number of interstitial cells, and leiomyocyte desmin content were similar when compared with the unaffected age- and species-matched control. Immunohistochemistry for smooth muscle α-actin demonstrated a striking loss of immunoreactivity, predominantly in the circular layer of the jejunum, that corresponded with the tinctorial change in leiomyocytes. Transmission electron microscopy revealed loss of myofibrils, loss of organelle polarity, and significantly larger central mitochondria (megamitochondria) in affected leiomyocytes, as well as nonspecific degenerative changes. Although the presence of a primary leiomyopathy and a causal relationship could not be confirmed in this case, leiomyopathies are considered a cause of chronic intestinal pseudo-obstruction in human medicine, and loss of smooth muscle α-actin immunoreactivity is one recognized marker for intestinal dysmotility.
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Affiliation(s)
- D M Imai
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr West, Madison, WI 53706, USA.
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Byrnes C, Lee YT, Meier ER, Rabel A, Sacks DB, Miller JL. Iron dose-dependent differentiation and enucleation of human erythroblasts in serum-free medium. J Tissue Eng Regen Med 2013; 10:E84-9. [PMID: 23606586 DOI: 10.1002/term.1743] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 01/11/2013] [Accepted: 02/05/2013] [Indexed: 11/07/2022]
Abstract
Improvements in ex vivo generation of enucleated red blood cells are being sought for erythroid biology research, toward the ultimate goal of erythrocyte engineering for clinical use. Based upon the high levels of iron-saturated transferrin in plasma serum, it was hypothesized that terminal differentiation in serum-free media may be highly dependent on the concentration of iron. Here adult human CD34(+) cells were cultured in a serum-free medium containing dosed levels of iron-saturated transferrin (holo-Tf, 0.1-1.0 mg/ml). Iron in the culture medium was reduced, but not depleted, with erythroblast differentiation into haemoglobinized cells. At the lowest holo-Tf dose (0.1 mg/ml), terminal differentiation was significantly reduced and the majority of the cells underwent apoptotic death. Cell survival, differentiation and enucleation were enhanced as the holo-Tf dose increased. These data suggest that adequate holo-Tf dosing is critical for terminal differentiation and enucleation of human erythroblasts generated ex vivo in serum-free culture conditions. Published 2013. This article is a US Government work and is in the public domain in the USA.
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Affiliation(s)
- Colleen Byrnes
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Y Terry Lee
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Emily R Meier
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
- Center for Cancer and Blood Disorders, Children's National Medical Center, Washington, DC, USA
| | - Antoinette Rabel
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - David B Sacks
- Clinical Chemistry Service, Department of Laboratory Medicine, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Jeffery L Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
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Wagner JA, Larson PJ, Weiss S, Miller JL, Doebber TW, Wu MS, Moller DE, Gottesdiener KM. Individual and Combined Effects of Peroxisome Proliferator-Activated Receptor α and γ Agonists, Fenofibrate and Rosiglitazone, on Biomarkers of Lipid and Glucose Metabolism in Healthy Nondiabetic Volunteers. J Clin Pharmacol 2013; 45:504-13. [PMID: 15831773 DOI: 10.1177/0091270004273136] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [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: 11/16/2022]
Abstract
This open-label, randomized, placebo-controlled, incomplete-block, 3-period crossover pilot study investigated the effects of peroxisome proliferator-activated receptor alpha- and gamma-agonists on biomarkers of lipid and glucose metabolism in 12 nondiabetic subjects. Plasma samples were collected before and after each 14-day treatment with placebo, fenofibrate (201 mg/d), rosiglitazone (4 mg twice daily), and combined fenofibrate (201 mg/d) plus rosiglitazone (4 mg twice daily). Except for triglycerides (P < .042) and free fatty acids (P < .074), no significant interaction was demonstrated between fenofibrate and rosiglitazone; thus, the effect due to each drug alone was evaluated (presence/absence of drug). Fenofibrate significantly (P < .050) increased lipoprotein lipase activity (35%) and decreased apolipoproteins B (13%) and C-III (20%). Rosiglitazone significantly (P < .050) decreased fasting glucose (7.3%) and increased apolipoprotein C-III (19%) and adiponectin (137%). Fenofibrate and rosiglitazone also produced effects on triglycerides and free fatty acids, but it was not possible to determine if these effects were synergistic in nature.
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Affiliation(s)
- J A Wagner
- Department of Clinical Pharmacology, Merck Research Laboratories, 126 East Lincoln Avenue, P.O. Box 2000, RY34-A548, Rahway, NJ 07065, USA
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Miller JL, Lynn CH, Shuster J, Driscoll DJ. A reduced-energy intake, well-balanced diet improves weight control in children with Prader-Willi syndrome. J Hum Nutr Diet 2012; 26:2-9. [PMID: 23078343 DOI: 10.1111/j.1365-277x.2012.01275.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Children with Prader-Willi syndrome (PWS) have a predictable pattern of weight gain, with obesity beginning in early childhood and worsening as they get older and hyperphagia increases. Data on the most effective dietary modifications are scant and primarily anecdotal. As part of a longitudinal study investigating the natural history of PWS, we evaluated the effect of a well-balanced, energy-restricted diet on body composition and weight in young children with PWS. METHODS Sixty-three children, aged 2-10 years, with genetically proven PWS participated in the present study. These children had measurements of body composition by dual-energy X-ray absorptiometry and resting energy expenditure (REE), as well as a 3-day diet history analysis both before and after intervention. Energy calculations were based on the individual's REE, with the recommendation that the macronutrients of the diet consist of 30% fat, 45% carbohydrates and 25% protein, with at least 20 g of fibre per day. RESULTS Thirty-three families adhered to our dietary recommendations for both energy intake and macronutrient distribution. Those 33 children had lower body fat (19.8% versus 41.9%; P < 0.001) and weight management (body mass index SD score 0.3 versus 2.23; P < 0.001) than those whose parents followed the energy intake recommendations but did not alter the macronutrient composition of the diet. Those who followed our recommendations also had a lower respiratory quotient (0.84 versus 0.95; P = 0.002). CONCLUSIONS Our recommendation for an energy-restricted diet with a well-balanced macronutrient composition and fibre intake improves both weight and body composition in children with PWS compared to a simple energy-restricted diet.
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Affiliation(s)
- J L Miller
- University of Florida, Department of Pediatrics, Gainesville, FL 32608, USA.
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Abstract
Early identification of infants with sickle cell disease (SCD) by newborn screening, now universal in all 50 states in the US, has improved survival, mainly by preventing overwhelming sepsis with the early use of prophylactic penicillin. Routine transcranial Doppler screening with the institution of chronic transfusion decreases the risk of stroke from 10% to 1% in paediatric SCD patients. Hydroxyurea decreases the number and frequency of painful crises, acute chest syndromes and number of blood transfusions in children with SCD. Genetic research continues to be driven toward the prevention and ultimate cure of SCD before adulthood. This review focuses on clinical manifestations and therapeutic strategies for paediatric SCD as well as the evolving topic of gene-focused prevention and therapy.
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Affiliation(s)
- Emily Riehm Meier
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Byrnes C, Terry Lee Y, Donahue RE, Miller JL. Identification of a cross-reacting, monoclonal anti-human CD233 antibody for identification and sorting of rhesus macaque erythrocytes. Cytometry A 2011; 81:165-8. [PMID: 22170815 DOI: 10.1002/cyto.a.22005] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/22/2011] [Accepted: 11/24/2011] [Indexed: 11/07/2022]
Abstract
Erythroid biology research involving rhesus macaques has been applied to several topics including malaria, hemoglobinopathy and gene therapy research. However, analyses of the rhesus red blood cells are limited by the inability to identify and sort those cells in research blood samples using flow cytometry. Here it is reported that the BRIC 6 hybridoma clone raised to the human erythroid surface molecule (referred to as CD233, Band 3, AE1, or SLC4A1) produces cross-reactive and erythroid-specific antibodies for flow cytometric detection and sorting of rhesus macaque erythrocytes.
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Affiliation(s)
- Colleen Byrnes
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA
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Abraham B, Hicks W, Jia Y, Baek JH, Miller JL, Alayash AI. Isolated Hb Providence β82Asn and β82Asp fractions are more stable than native HbA(0) under oxidative stress conditions. Biochemistry 2011; 50:9752-66. [PMID: 21977904 DOI: 10.1021/bi200876e] [Citation(s) in RCA: 16] [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] [Indexed: 01/17/2023]
Abstract
We have previously shown that hydrogen peroxide (H(2)O(2)) triggers irreversible oxidation of amino acids exclusive to the β-chains of purified human hemoglobin (HbAo). However, it is not clear, whether α- or β-subunit Hb variants exhibit different oxidative resistance to H(2)O(2) when compared to their native HbAo. Hb Providence contains two β-subunit variants with single amino acid mutations at βLys82→Asp (βK82D) and at βLys82→Asn (βK82N) positions and binds oxygen at lower affinity than wild type HbA. We have separated Hb Providence into its 3 component fractions, and contrasted oxidative reactions of its β-mutant fractions with HbAo. Relative to HbAo, both βK82N and βK82D fractions showed similar autoxidation kinetics and similar initial oxidation reaction rates with H(2)O(2). However, a more profound pattern of changes was seen in HbAo than in the two Providence fractions. The structural changes in HbAo include a collapse of β-subunits, and α-α dimer formation in the presence of excess H(2)O(2). Mass spectrometric and amino acid analysis revealed that βCys93 and βCys112 were oxidized in the HbAo fraction, consistent with oxidative pathways driven by a ferrylHb and its protein radical. These amino acids were oxidized at a lesser extent in βK82D fraction. While the 3 isolated components of Hb Providence exhibited similar ligand binding and oxidation reaction kinetics, the variant fractions were more effective in consuming H(2)O(2) and safely internalizing radicals through the ferric/ferryl pseudoperoxidase cycle.
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Affiliation(s)
- Bindu Abraham
- Laboratory of Biochemistry and Vascular Biology, Division of Hematology, Center for Biologics Evaluation and Research, US Food and Drug Administration, Bethesda, Maryland 20892, United States
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Park BJ, Shetty S, Ahlquist A, Greenbaum A, Miller JL, Motsi A, McCarthy K, Govender N. Long-term follow-up and survival of antiretroviral-naive patients with cryptococcal meningitis in the pre-antiretroviral therapy era, Gauteng Province, South Africa. Int J STD AIDS 2011; 22:199-203. [PMID: 21515751 DOI: 10.1258/ijsa.2010.010235] [Citation(s) in RCA: 15] [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] [Indexed: 11/18/2022]
Abstract
Cryptococcal meningitis (CM) is a major cause of death among HIV-infected persons in sub-Saharan Africa. We conducted a study to describe the long-term outcomes during the pre-antiretroviral post-ART therapy period. Enrolled cases were those detected through population-based surveillance in Gauteng Province, South Africa, and diagnosed during March-November 2002 and July-September 2003 from eight large hospitals representing academic, provincial and rural settings. Of 1089 case-patients diagnosed with CM, 721 (70%) survived to discharge. Among the 256 with follow-up information, 154 (60%) were established to have died, 44% of whom died as outpatients. Overall, the 14- and 90-day survival post-diagnosis was 68% and 41%, respectively. On Cox proportional hazards multivariable analysis, severe disease was associated with shorter survival time; having received any antifungal treatment for the cryptococcal episode was associated with increased survival time at follow-up. Although most patients in this cohort survived the initial hospitalization, only 41% were still alive three months after diagnosis, with nearly half of deaths occurring outside a hospital. These data are an important baseline from which to measure effectiveness of public health management of CM in South Africa.
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Affiliation(s)
- B J Park
- Mycotic Diseases Branch, US Centers for Disease Control and Prevention, Atlanta, GA, USA.
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Tanno T, Miller JL. GDF15 expression and iron overload in ineffective erythropoiesis. Rinsho Ketsueki 2011; 52:387-398. [PMID: 21737991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Toshihiko Tanno
- Department of Oncology/Hematologic Malignancies, Johns Hopkins School of Medicine
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Meier ER, Byrnes C, Weissman M, Noel P, Luban NL, Miller JL. Expression patterns of fetal hemoglobin in sickle cell erythrocytes are both patient- and treatment-specific during childhood. Pediatr Blood Cancer 2011; 56:103-9. [PMID: 21108444 PMCID: PMC3299194 DOI: 10.1002/pbc.22643] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Treatment-associated fetal hemoglobin (HbF) expression patterns in children with sickle cell disease (SCD) have not been fully described. The objective of this study was to compare HbF expression profiles (HbF and F-cells) in the peripheral blood of pediatric SCD patients receiving hydroxyurea (HU), chronic transfusions (Tx) or no chronic therapy (Ctrl). PROCEDURE Peripheral blood samples were collected from SCD patients between 1 month and 21 years of age and immunostained with anti-HbF and anti-HbA antibodies. Erythrocytes containing HbF (F-cells) were enumerated with this dual staining method. HbF was measured using chromatography (HPLC). RESULTS Blood from 44 Ctrl patients ≤ 4 years of age was compared with that from older children (50 Ctrl, 17 HU, 17 Tx). Among the older children, the percentage of both HbF and F-cells in the Tx group was significantly decreased compared to the control (HbF 5.4 ± 4.2% vs. 11.0 ± 7.2%, P = 0.003; F-cells 30.2 ± 16.3% vs. 43.8 ± 20.4%, P = 0.0071). While the distribution of F-cells was significantly increased in the HU group (56.3 ± 17.1% vs. 43.8 ± 20.4%, P = 0.016), the increase in HbF was less robust (14.7 ± 6.4% vs. 11.0 ± 7.2%, P = 0.051). Positive correlations of HbF and F-cell distributions were noted in all groups (P < 0.0001 for all groups). In serial samples from individual patients, relatively static patterns of HbF and F-cell distribution were noted. CONCLUSION Pediatric SCD patients possess distinct patterns of HbF switching and silencing in peripheral blood erythrocytes. Thereafter, erythrocyte HbF expression level and distribution are maintained with both patient- and treatment-specific patterns that may be useful for predicting the need or response to HbF-modulating therapy.
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Affiliation(s)
- Emily Riehm Meier
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
,Center for Cancer and Blood Disorders, Children’s National Medical Center, Washington, District of Columbia
| | - Colleen Byrnes
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Maxine Weissman
- Laboratory Medicine Department, Hematology Service, National Institutes of Health, Bethesda, Maryland
| | - Pierre Noel
- Laboratory Medicine Department, Hematology Service, National Institutes of Health, Bethesda, Maryland
| | - Naomi L.C. Luban
- Center for Cancer and Blood Disorders, Children’s National Medical Center, Washington, District of Columbia
,Department of Pediatrics, The George Washington University Medical Center, Washington, District of Columbia
| | - Jeffery L. Miller
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
,Correspondence to: Jeffery L. Miller, Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 10 Center Drive, Building 10, Room 9N311, Bethesda, MD 20892.
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Migoya EM, Bergeron R, Miller JL, Snyder RNK, Tanen M, Hilliard D, Weiss B, Larson P, Gutierrez M, Jiang G, Liu F, Pryor KA, Yao J, Zhu L, Holst JJ, Deacon C, Herman G, Thornberry N, Amatruda J, Williams-Herman D, Wagner JA, SinhaRoy R. Dipeptidyl Peptidase-4 Inhibitors Administered in Combination With Metformin Result in an Additive Increase in the Plasma Concentration of Active GLP-1. Clin Pharmacol Ther 2010; 88:801-8. [DOI: 10.1038/clpt.2010.184] [Citation(s) in RCA: 144] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Adamson P, Auty DJ, Ayres DS, Backhouse C, Barr G, Barrett WL, Bishai M, Blake A, Bock GJ, Boehnlein DJ, Bogert D, Bower C, Budd S, Cavanaugh S, Cherdack D, Childress S, Choudhary BC, Coelho JAB, Cobb JH, Coleman SJ, Corwin L, Cravens JP, Cronin-Hennessy D, Danko IZ, de Jong JK, Devenish NE, Diwan MV, Dorman M, Escobar CO, Evans JJ, Falk E, Feldman GJ, Frohne MV, Gallagher HR, Gomes RA, Goodman MC, Gouffon P, Gran R, Grant N, Grzelak K, Habig A, Harris D, Harris PG, Hartnell J, Hatcher R, Himmel A, Holin A, Huang X, Hylen J, Ilic J, Irwin GM, Isvan Z, Jaffe DE, James C, Jensen D, Kafka T, Kasahara SMS, Koizumi G, Kopp S, Kordosky M, Krahn Z, Kreymer A, Lang K, Lefeuvre G, Ling J, Litchfield PJ, Loiacono L, Lucas P, Mann WA, Marshak ML, Mayer N, McGowan AM, Mehdiyev R, Meier JR, Messier MD, Michael DG, Miller JL, Miller WH, Mishra SR, Mitchell J, Moore CD, Mualem L, Mufson S, Musser J, Naples D, Nelson JK, Newman HB, Nichol RJ, Oliver WP, Orchanian M, Paley J, Patterson RB, Patzak T, Pawloski G, Pearce GF, Pittam R, Plunkett RK, Ratchford J, Raufer TM, Rebel B, Rodrigues PA, Rosenfeld C, Rubin HA, Ryabov VA, Sanchez MC, Saoulidou N, Schneps J, Schreiner P, Semenov VK, Shanahan P, Smart W, Sousa A, Strait M, Tagg N, Talaga RL, Thomas J, Thomson MA, Tinti G, Toner R, Tzanakos G, Urheim J, Vahle P, Viren B, Weber A, Webb RC, White C, Whitehead L, Wojcicki SG, Wright DM, Yang T, Zois M, Zwaska R. Search for Lorentz invariance and CPT violation with the MINOS far detector. Phys Rev Lett 2010; 105:151601. [PMID: 21230890 DOI: 10.1103/physrevlett.105.151601] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2010] [Indexed: 05/30/2023]
Abstract
We searched for a sidereal modulation in the MINOS far detector neutrino rate. Such a signal would be a consequence of Lorentz and CPT violation as described by the standard-model extension framework. It also would be the first detection of a perturbative effect to conventional neutrino mass oscillations. We found no evidence for this sidereal signature, and the upper limits placed on the magnitudes of the Lorentz and CPT violating coefficients describing the theory are an improvement by factors of 20-510 over the current best limits found by using the MINOS near detector.
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Affiliation(s)
- P Adamson
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
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Noh SJ, Lee YT, Byrnes C, Miller JL. A transcriptome-based examination of blood group expression. Transfus Clin Biol 2010; 17:120-5. [PMID: 20685146 DOI: 10.1016/j.tracli.2010.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Accepted: 06/08/2010] [Indexed: 11/27/2022]
Abstract
Over the last two decades, red cell biologists witnessed a vast expansion of genetic-based information pertaining to blood group antigens and their carrier molecules. Genetic progress has led to a better comprehension of the associated antigens. To assist with studies concerning the integrated regulation and function of blood groups, transcript levels for each of the 36 associated genes were studied. Profiles using mRNA from directly sampled reticulocytes and cultured primary erythroblasts are summarized in this report. Transcriptome profiles suggest a highly regulated pattern of blood group gene expression during erythroid differentiation and ontogeny. Approximately one-third of the blood group carrier genes are transcribed in an erythroid-specific fashion. Low-level and indistinct expression was noted for most of the carbohydrate-associated genes. Methods are now being developed to further explore and manipulate expression of the blood group genes at all stages of human erythropoiesis.
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Affiliation(s)
- S-J Noh
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institutes of Health (NIH), 31 Center Drive, Bethesda, Building 10, Room 9N311, MD 20892, USA
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Abstract
PURPOSE OF REVIEW Growth differentiation factor 15 (GDF15) was identified as a hepcidin-suppression factor that is expressed at high levels in patients with ineffective erythropoiesis. This review addresses the regulation, expression and potential functions of GDF15 in the context of erythroid biology. RECENT FINDINGS GDF15 expression during late erythroid differentiation was discovered as part of an erythroblast transcriptome project. As GDF15 expression is associated with cellular stress or apoptosis, further investigation of the cytokine was focused upon its involvement in ineffective erythropoiesis. Remarkably high serum levels were detected in patients with thalassemia syndromes, congenital dyserythropoiesis and some acquired sideroblastic anemias. High-level GDF15 expression is not a feature of normal erythropoiesis, or erythroid recovery after bone-marrow transplantation. As GDF15 is a transforming growth factor-beta superfamily member, it was investigated as an effector of ineffective erythropoiesis that suppresses hepcidin expression despite iron overloading. SUMMARY In contrast to the low levels of GDF15 expressed during normal erythropoiesis, ineffective erythropoiesis causes high-level expression of GDF15. In patients with thalassemia and related anemias, GDF15 expression may contribute to iron overloading or other features of the disease phenotype.
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Affiliation(s)
- Toshihiko Tanno
- Molecular Medicine Branch, NIDDK, NIH, Bethesda, Maryland, USA
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