31 results on '"Ackerman RJ"'
Search Results
2. The study to understand the genetics of the acute response to metformin and glipizide in humans (SUGAR-MGH): design of a pharmacogenetic resource for type 2 diabetes
- Author
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Jennifer N. Todd, Andrew W. Taylor, Geoffrey A. Walford, Maegan Harden, Deborah J. Wexler, Jaclyn Davis, Melissa K. Thomas, Janet Lo, Varinderpal Kaur, Jose C. Florez, Ling Chen, Katherine R. Littleton, Rachel J. Ackerman, Rebecca R. Fanelli, Bindu Chamarthi, Paul L. Huang, Corinne Barbato, Liana K. Billings, Allison B. Goldfine, A. Sofia Warner, Elliot S. Stolerman, Alisa K. Manning, Allan F. Moore, Sabina Q. Khan, Richard W. Grant, Rita M. McCarthy, Margo S. Hudson, Chunmei Huang, Marlene Fernandez, Alicia M. Hernandez, Rosa Bui, Laurel Garber, Amelia Lanier, Natalia Colomo, [Walford,GA, Colomo,N, Todd,JN, Billings,LK, Fernandez,M, Warner,AS, Davis,J, Littleton,KR, Hernandez,AM, Fanelli,RR, Lanier,A, Ackerman,RJ, Khan,SQ, Stolerman,ES, Moore,AF, Kaur,V, Taylor,A, Chen,L, Manning,AK, Florez,JC] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts, United States of America. [Walford,GA, Wexler,D, Thomas,MK, Florez,JC] Diabetes Research Center, Diabetes Unit, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America. [Walford,GA, Huang,C, Huang,P, Lo,J, Goldfine,A, Florez,JC] Harvard Medical School, Boston, Massachusetts, United States of America. [Colomo,N] Department of Endocrinology and Nutrition. Hospital Universitario Regional de Málaga. Instituto de Investigación Biomédica de Málaga (IBIMA). Málaga, Spain. [Todd,JN] Boston Children’s Hospital, Boston, Massachusetts, United States of America. [Billings,LK, ] Division of Endocrinology and Metabolism, NorthShore University Health System, Evanston, Illinois, United States of America. [Chamarthi,B] Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America. [Chamarthi,B, McCarthy,RM, Hudson,MS] Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America. [Barbato,C, Bui,R, Garber,L, Goldine,A] Joslin Diabetes Center, Boston, Massachusetts, United States of America. [Harden,M] Genomics Platform, Broad Institute, Cambridge, Massachusetts, United States of America. [Grant,RW] Division of Research, Kaiser Permanente Northern California, Oakland, California, United States of America., This work was conducted with support from National Institutes of Health/NIDDK awards R01 DK088214, R03 DK077675, and P30 DK036836, from the Joslin Clinical Research Center from its philanthropic donors, and and the Harvard Catalyst: The Harvard Clinical and translational Science Center (National Center for Research Resources and the National Center for Advancing Translational Sciences, NIH Awards M01-RR-01066, 1 UL1 RR025758-04 and 8UL1TR000170-05 and financial contributions from Harvard University and its affiliated academic health care centers).
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Blood Glucose ,Male ,Phenomena and Processes::Genetic Phenomena::Phenotype [Medical Subject Headings] ,medicine.medical_treatment ,lcsh:Medicine ,Type 2 diabetes ,Named Groups::Persons::Age Groups::Adult::Middle Aged [Medical Subject Headings] ,Hipoglicemiantes ,Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings] ,Insulina ,Insulin ,lcsh:Science ,Genetics ,Glucose tolerance test ,Prueba de tolerancia a la glucosa ,Multidisciplinary ,medicine.diagnostic_test ,Predisposición genética a la enfermedad ,Middle Aged ,Polimorfismo de nucleótido único ,Phenomena and Processes::Genetic Phenomena::Genotype::Genetic Predisposition to Disease [Medical Subject Headings] ,Metformin ,3. Good health ,Phenotype ,Treatment Outcome ,Chemicals and Drugs::Organic Chemicals::Amidines::Guanidines::Biguanides::Metformin [Medical Subject Headings] ,Female ,Disciplines and Occupations::Natural Science Disciplines::Biological Science Disciplines::Pharmacology::Pharmacogenetics [Medical Subject Headings] ,Alelos ,Fenotipo ,Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Clinical Laboratory Techniques::Clinical Chemistry Tests::Blood Chemical Analysis::Glucose Tolerance Test [Medical Subject Headings] ,Transcription Factor 7-Like 2 Protein ,medicine.drug ,Research Article ,Adult ,Blood sugar ,Check Tags::Male [Medical Subject Headings] ,Hypoglycemia ,Polymorphism, Single Nucleotide ,Diabetes mellitus ,medicine ,Chemicals and Drugs::Biological Factors::Biological Markers [Medical Subject Headings] ,Named Groups::Persons::Age Groups::Adult [Medical Subject Headings] ,Proteína 2 similar al factor de transcripción 7 ,Humans ,Hypoglycemic Agents ,Genetic Predisposition to Disease ,Named Groups::Persons::Age Groups::Adult::Aged [Medical Subject Headings] ,Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Alleles [Medical Subject Headings] ,Alleles ,Chemicals and Drugs::Hormones, Hormone Substitutes, and Hormone Antagonists::Hormones::Peptide Hormones::Pancreatic Hormones::Insulins [Medical Subject Headings] ,Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Prognosis::Treatment Outcome [Medical Subject Headings] ,Aged ,Phenomena and Processes::Genetic Phenomena::Genetic Variation::Polymorphism, Genetic::Polymorphism, Single Nucleotide [Medical Subject Headings] ,business.industry ,lcsh:R ,Diseases::Endocrine System Diseases::Diabetes Mellitus::Diabetes Mellitus, Type 2 [Medical Subject Headings] ,glipicida ,Glucose Tolerance Test ,medicine.disease ,Biomarcadores ,Check Tags::Female [Medical Subject Headings] ,Chemicals and Drugs::Amino Acids, Peptides, and Proteins::Proteins::Transcription Factors::TCF Transcription Factors::Transcription Factor 7-Like 2 Protein [Medical Subject Headings] ,Diabetes Mellitus, Type 2 ,Pharmacogenetics ,Diabetes Mellitus, Tipo II ,Chemicals and Drugs::Organic Chemicals::Sulfur Compounds::Sulfones::Sulfonylurea Compounds::Glipizide [Medical Subject Headings] ,Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Physiological Effects of Drugs::Hypoglycemic Agents [Medical Subject Headings] ,lcsh:Q ,Resultado del tratamiento ,business ,Biomarkers ,Glipizide ,Glucosa sanguínea ,Chemicals and Drugs::Carbohydrates::Monosaccharides::Hexoses::Glucose::Blood Glucose [Medical Subject Headings] - Abstract
ClinicalTrials.gov NCT01762046; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; OBJECTIVE Genome-wide association studies have uncovered a large number of genetic variants associated with type 2 diabetes or related phenotypes. In many cases the causal gene or polymorphism has not been identified, and its impact on response to anti-hyperglycemic medications is unknown. The Study to Understand the Genetics of the Acute Response to Metformin and Glipizide in Humans (SUGAR-MGH, NCT01762046) is a novel resource of genetic and biochemical data following glipizide and metformin administration. We describe recruitment, enrollment, and phenotyping procedures and preliminary results for the first 668 of our planned 1,000 participants enriched for individuals at risk of requiring anti-diabetic therapy in the future. METHODS All individuals are challenged with 5 mg glipizide × 1; twice daily 500 mg metformin × 2 days; and 75-g oral glucose tolerance test following metformin. Genetic variants associated with glycemic traits and blood glucose, insulin, and other hormones at baseline and following each intervention are measured. RESULTS Approximately 50% of the cohort is female and 30% belong to an ethnic minority group. Following glipizide administration, peak insulin occurred at 60 minutes and trough glucose at 120 minutes. Thirty percent of participants experienced non-severe symptomatic hypoglycemia and required rescue with oral glucose. Following metformin administration, fasting glucose and insulin were reduced. Common genetic variants were associated with fasting glucose levels. CONCLUSIONS SUGAR-MGH represents a viable pharmacogenetic resource which, when completed, will serve to characterize genetic influences on pharmacological perturbations, and help establish the functional relevance of newly discovered genetic loci to therapy of type 2 diabetes. TRIAL REGISTRATION ClinicalTrials.gov NCT01762046. Yes
- Published
- 2015
3. The study to understand the genetics of the acute response to metformin and glipizide in humans (SUGAR-MGH): design of a pharmacogenetic resource for type 2 diabetes.
- Author
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Walford GA, Colomo N, Todd JN, Billings LK, Fernandez M, Chamarthi B, Warner AS, Davis J, Littleton KR, Hernandez AM, Fanelli RR, Lanier A, Barbato C, Ackerman RJ, Khan SQ, Bui R, Garber L, Stolerman ES, Moore AF, Huang C, Kaur V, Harden M, Taylor A, Chen L, Manning AK, Huang P, Wexler D, McCarthy RM, Lo J, Thomas MK, Grant RW, Goldfine A, Hudson MS, and Florez JC
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- Adult, Aged, Alleles, Biomarkers, Blood Glucose, Diabetes Mellitus, Type 2 metabolism, Female, Genetic Predisposition to Disease, Glucose Tolerance Test, Humans, Insulin blood, Male, Middle Aged, Phenotype, Polymorphism, Single Nucleotide, Transcription Factor 7-Like 2 Protein genetics, Treatment Outcome, Diabetes Mellitus, Type 2 drug therapy, Diabetes Mellitus, Type 2 genetics, Glipizide therapeutic use, Hypoglycemic Agents therapeutic use, Metformin therapeutic use, Pharmacogenetics
- Abstract
Objective: Genome-wide association studies have uncovered a large number of genetic variants associated with type 2 diabetes or related phenotypes. In many cases the causal gene or polymorphism has not been identified, and its impact on response to anti-hyperglycemic medications is unknown. The Study to Understand the Genetics of the Acute Response to Metformin and Glipizide in Humans (SUGAR-MGH, NCT01762046) is a novel resource of genetic and biochemical data following glipizide and metformin administration. We describe recruitment, enrollment, and phenotyping procedures and preliminary results for the first 668 of our planned 1,000 participants enriched for individuals at risk of requiring anti-diabetic therapy in the future., Methods: All individuals are challenged with 5 mg glipizide × 1; twice daily 500 mg metformin × 2 days; and 75-g oral glucose tolerance test following metformin. Genetic variants associated with glycemic traits and blood glucose, insulin, and other hormones at baseline and following each intervention are measured., Results: Approximately 50% of the cohort is female and 30% belong to an ethnic minority group. Following glipizide administration, peak insulin occurred at 60 minutes and trough glucose at 120 minutes. Thirty percent of participants experienced non-severe symptomatic hypoglycemia and required rescue with oral glucose. Following metformin administration, fasting glucose and insulin were reduced. Common genetic variants were associated with fasting glucose levels., Conclusions: SUGAR-MGH represents a viable pharmacogenetic resource which, when completed, will serve to characterize genetic influences on pharmacological perturbations, and help establish the functional relevance of newly discovered genetic loci to therapy of type 2 diabetes., Trial Registration: ClinicalTrials.gov NCT01762046.
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- 2015
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4. The influence of rare genetic variation in SLC30A8 on diabetes incidence and β-cell function.
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Billings LK, Jablonski KA, Ackerman RJ, Taylor A, Fanelli RR, McAteer JB, Guiducci C, Delahanty LM, Dabelea D, Kahn SE, Franks PW, Hanson RL, Maruthur NM, Shuldiner AR, Mayer-Davis EJ, Knowler WC, and Florez JC
- Subjects
- Adult, Alleles, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 metabolism, Female, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Humans, Incidence, Insulin metabolism, Insulin Secretion, Male, Middle Aged, Zinc Transporter 8, Cation Transport Proteins genetics, Diabetes Mellitus, Type 2 genetics, Insulin-Secreting Cells metabolism, Polymorphism, Single Nucleotide
- Abstract
Context/objective: The variant rs13266634 in SLC30A8, encoding a β-cell-specific zinc transporter, is associated with type 2 diabetes. We aimed to identify other variants in SLC30A8 that increase diabetes risk and impair β-cell function, and test whether zinc intake modifies this risk. DESIGN/OUTCOME: We sequenced exons in SLC30A8 in 380 Diabetes Prevention Program (DPP) participants and identified 44 novel variants, which were genotyped in 3445 DPP participants and tested for association with diabetes incidence and measures of insulin secretion and processing. We examined individual common variants and used gene burden tests to test 39 rare variants in aggregate., Results: We detected a near-nominal association between a rare-variant genotype risk score and diabetes risk. Five common variants were associated with the oral disposition index. Various methods aggregating rare variants demonstrated associations with changes in oral disposition index and insulinogenic index during year 1 of follow-up. We did not find a clear interaction of zinc intake with genotype on diabetes incidence., Conclusions: Individual common and an aggregate of rare genetic variation in SLC30A8 are associated with measures of β-cell function in the DPP. Exploring rare variation may complement ongoing efforts to uncover the genetic influences that underlie complex diseases.
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- 2014
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5. Branched chain and aromatic amino acids change acutely following two medical therapies for type 2 diabetes mellitus.
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Walford GA, Davis J, Warner AS, Ackerman RJ, Billings LK, Chamarthi B, Fanelli RR, Hernandez AM, Huang C, Khan SQ, Littleton KR, Lo J, McCarthy RM, Rhee EP, Deik A, Stolerman E, Taylor A, Hudson MS, Wang TJ, Altshuler D, Grant RW, Clish CB, Gerszten RE, and Florez JC
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- Aged, Biomarkers, Blood Glucose metabolism, Female, Glipizide therapeutic use, Humans, Insulin blood, Insulin Resistance, Male, Metformin therapeutic use, Middle Aged, Spectrum Analysis, Amino Acids, Aromatic blood, Amino Acids, Branched-Chain blood, Diabetes Mellitus, Type 2 drug therapy, Diabetes Mellitus, Type 2 metabolism, Hypoglycemic Agents therapeutic use
- Abstract
Objective: Elevated circulating levels of branched chain and aromatic amino acids (BCAA/AAAs) are associated with insulin resistance and incident type 2 diabetes (T2D). BCAA/AAAs decrease acutely during an oral glucose tolerance test (OGTT), a diagnostic test for T2D. It is unknown whether changes in BCAA/AAAs also signal an early response to commonly used medical therapies for T2D., Materials and Methods: A liquid chromatography-mass spectrometry approach was used to measure BCAA/AAAs in 30 insulin sensitive (IS) and 30 insulin resistant (IR) subjects before and after: (1) one dose of a sulfonylurea medication, glipizide, 5 mg orally; (2) two days of twice daily metformin 500 mg orally; and (3) a 75-g OGTT. Percent change in BCAA/AAAs was determined after each intervention., Results: Following glipizide, which increased insulin and decreased glucose in both subject groups, BCAA/AAAs decreased in the IS subjects only (all P<0.05). Following metformin, which decreased glucose and insulin in only the IR subjects, 4 BCAA/AAAs increased in the IR subjects at or below P=0.05, and none changed in the IS subjects. Following OGTT, which increased glucose and insulin in all subjects, BCAA/AAAs decreased in all subjects (P<0.05)., Conclusions: BCAA/AAAs changed acutely during glipizide and metformin administration, and the magnitude and direction of change differed by the insulin resistance status of the individual and the intervention. These results indicate that BCAA/AAAs may be useful biomarkers for monitoring the early response to therapeutic interventions for T2D., (© 2013.)
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- 2013
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6. Impact of common variation in bone-related genes on type 2 diabetes and related traits.
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Billings LK, Hsu YH, Ackerman RJ, Dupuis J, Voight BF, Rasmussen-Torvik LJ, Hercberg S, Lathrop M, Barnes D, Langenberg C, Hui J, Fu M, Bouatia-Naji N, Lecoeur C, An P, Magnusson PK, Surakka I, Ripatti S, Christiansen L, Dalgård C, Folkersen L, Grundberg E, Eriksson P, Kaprio J, Ohm Kyvik K, Pedersen NL, Borecki IB, Province MA, Balkau B, Froguel P, Shuldiner AR, Palmer LJ, Wareham N, Meneton P, Johnson T, Pankow JS, Karasik D, Meigs JB, Kiel DP, and Florez JC
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- Adipose Tissue metabolism, Adult, Blood Glucose genetics, Blood Glucose metabolism, Body Mass Index, Endonucleases, Female, Fractures, Bone genetics, Genome-Wide Association Study, Humans, Insulin genetics, Linkage Disequilibrium, Liver metabolism, Microfilament Proteins genetics, Nuclear Proteins, Osteoporosis genetics, Polymorphism, Single Nucleotide, Bone Density genetics, Diabetes Mellitus, Type 2 genetics, Fractures, Bone etiology, Integrin alpha1 genetics
- Abstract
Exploring genetic pleiotropy can provide clues to a mechanism underlying the observed epidemiological association between type 2 diabetes and heightened fracture risk. We examined genetic variants associated with bone mineral density (BMD) for association with type 2 diabetes and glycemic traits in large well-phenotyped and -genotyped consortia. We undertook follow-up analysis in ∼19,000 individuals and assessed gene expression. We queried single nucleotide polymorphisms (SNPs) associated with BMD at levels of genome-wide significance, variants in linkage disequilibrium (r(2) > 0.5), and BMD candidate genes. SNP rs6867040, at the ITGA1 locus, was associated with a 0.0166 mmol/L (0.004) increase in fasting glucose per C allele in the combined analysis. Genetic variants in the ITGA1 locus were associated with its expression in the liver but not in adipose tissue. ITGA1 variants appeared among the top loci associated with type 2 diabetes, fasting insulin, β-cell function by homeostasis model assessment, and 2-h post-oral glucose tolerance test glucose and insulin levels. ITGA1 has demonstrated genetic pleiotropy in prior studies, and its suggested role in liver fibrosis, insulin secretion, and bone healing lends credence to its contribution to both osteoporosis and type 2 diabetes. These findings further underscore the link between skeletal and glucose metabolism and highlight a locus to direct future investigations.
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- 2012
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7. Identification of SYWKQCAFNAVSCFamide: a broadly conserved crustacean C-type allatostatin-like peptide with both neuromodulatory and cardioactive properties.
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Dickinson PS, Wiwatpanit T, Gabranski ER, Ackerman RJ, Stevens JS, Cashman CR, Stemmler EA, and Christie AE
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- Amino Acid Sequence, Animals, Computational Biology, Conserved Sequence, Databases, Genetic, Expressed Sequence Tags, Fourier Analysis, Gastric Mucosa drug effects, Genomics, Molecular Sequence Data, Neuropeptides isolation & purification, Neuropeptides pharmacology, Neurotransmitter Agents isolation & purification, Neurotransmitter Agents pharmacology, Sequence Alignment, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Heart drug effects, Nephropidae metabolism, Neuropeptides chemistry, Neurotransmitter Agents chemistry
- Abstract
The allatostatins comprise three structurally distinct peptide families that regulate juvenile hormone production by the insect corpora allata. A-type family members contain the C-terminal motif -YXFGLamide and have been found in species from numerous arthropod taxa. Members of the B-type family exhibit a -WX(6)Wamide C-terminus and, like the A-type peptides, appear to be broadly conserved within the Arthropoda. By contrast, members of the C-type family, typified by the unblocked C-terminus -PISCF, a pyroglutamine blocked N-terminus, and a disulfide bridge between two internal Cys residues, have only been found in holometabolous insects, i.e. lepidopterans and dipterans. Here, using transcriptomics, we have identified SYWKQCAFNAVSCFamide (disulfide bridging predicted between the two Cys residues), a known honeybee and water flea C-type-like peptide, from the American lobster Homarus americanus (infraorder Astacidea). Using matrix assisted laser desorption/ionization Fourier transform mass spectrometry (MALDI-FTMS), a mass corresponding to that of SYWKQCAFNAVSCFamide was detected in the H. americanus brain, supporting the existence of this peptide and its theorized structure. Furthermore, SYWKQCAFNAVSCFamide was detected by MALDI-FTMS in neural tissues from five additional astacideans as well as 19 members of four other decapod infraorders (i.e. Achelata, Anomura, Brachyura and Thalassinidea), suggesting that it is a broadly conserved decapod peptide. In H. americanus, SYWKQCAFNAVSCFamide is capable of modulating the output of both the pyloric circuit of the stomatogastric nervous system and the heart. This is the first demonstration of bioactivity for this peptide in any species.
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- 2009
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8. Applied psychophysiology, clinical biofeedback, and rehabilitation neuropsychology: a case study--mild traumatic brain injury and post-traumatic stress disorder.
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Ackerman RJ
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- Adult, Anxiety etiology, Anxiety therapy, Brain Injuries complications, Brain Injuries psychology, Depression etiology, Depression therapy, Female, Humans, Neuropsychology methods, Sex Offenses psychology, Stress Disorders, Post-Traumatic etiology, Stress Disorders, Post-Traumatic psychology, Treatment Outcome, Biofeedback, Psychology methods, Brain Injuries rehabilitation, Psychophysiology methods, Stress Disorders, Post-Traumatic rehabilitation
- Abstract
This article presents a case study of a 39-year-old European American married woman with a history of child and adolescent incest,marital rape, and physical abuse from her husband for more than 10 years. She was referred to a pain clinic for treatment of headaches and Tourette's syndrome. The client was evaluated with the Ackerman-Banks Neuropsychological Rehabilitation Battery to identify neuropsychological strengths and weaknesses. The Vulnerability to Stress Audit was used to identify life events that were positively and negatively influencing her life. The client was treated for mild traumatic brain injury, post-traumatic stress disorder,cognitive difficulties, impulsivity, confabulation, low frustration tolerance, and inability to evaluate and make decisions about socially appropriate behaviors. Treatment involved traditional psychotherapy, hypnosis, cognitive rehabilitation, biofeedback training, electromyography, finger temperature, and blood pressure.
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- 2004
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9. An evaluation of factors affecting duration of orthodontic treatment.
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Beckwith FR, Ackerman RJ Jr, Cobb CM, and Tira DE
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- Adolescent, Adult, Age Factors, Analysis of Variance, Child, Episode of Care, Equipment Failure, Factor Analysis, Statistical, Female, Humans, Male, Malocclusion pathology, Observer Variation, Orthodontic Appliances, Patient Compliance, Regression Analysis, Retrospective Studies, Sex Factors, Statistics, Nonparametric, Time Factors, Orthodontics, Corrective instrumentation, Orthodontics, Corrective methods, Orthodontics, Corrective statistics & numerical data
- Abstract
One of the first questions asked by new orthodontic patients is: How long will I need to wear my braces? A multitude of factors have the potential to influence the answer to this question. The purpose of this retrospective study was to identify some of the primary factors that influence orthodontic treatment duration. Few studies have attempted to evaluate these factors. Data were gathered from 140 consecutively completed, comprehensive treatment patient records in five orthodontic offices. Thirty-one variables related to patient characteristics, diagnostic factors, modality of treatment, and patient cooperation were evaluated. Average treatment time was 28.6 months with a range of 23.4 to 33.4 months among the five offices. Nearly half (46.9%) of the variation in treatment duration was explained by a five-step multiple regression analysis. Included in the regression equation were the number of missed appointments, the number of replaced brackets and bands, the number of treatment phases, the number of negative chart entries regarding oral hygiene, and the prescription of headgear wear during treatment. An additional 6.7% of the variance was explained by variation among the five offices. Six of the 31 variables examined made a statistically significant (alpha =.01) contribution to the explanation of variation in treatment time. The quality of the finished cases and the appropriateness of the original diagnosis and treatment plan were not evaluated. Developing an objective assessment to evaluate these areas may be important for increasing our understanding of treatment time variation.
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- 1999
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10. One-stage repair of interrupted aortic arch, ventricular septal defect, and subaortic obstruction in the neonate: a novel approach.
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Luciani GB, Ackerman RJ, Chang AC, Wells WJ, and Starnes VA
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- Cardiac Surgical Procedures methods, Female, Heart Septal Defects, Ventricular complications, Humans, Infant, Newborn, Male, Pulmonary Subvalvular Stenosis complications, Retrospective Studies, Treatment Outcome, Aorta abnormalities, Aorta surgery, Heart Septal Defects, Ventricular surgery, Pulmonary Subvalvular Stenosis surgery
- Abstract
Background: One-stage repair of interrupted aortic arch, ventricular septal defect, and severe subaortic stenosis represents a surgical challenge. Techniques that use extracardiac conduits to bypass the subaortic area or involve transaortic or transatrial resection of the conal septum have shown limitations and have failed to reduce the high mortality rate associated with subaortic obstruction., Methods and Results: A new operative approach was used in nine neonates (2.1 to 3.9 kg) who underwent one-stage repair of interrupted aortic arch (type B, eight patients; type C, one patient), ventricular septal defect, and severe subaortic stenosis. All patients had severe subaortic stenosis according to preoperative echocardiography (mean ratio of subaortic to descending aortic diameter, 0.63 +/- 0.08). With a transpulmonary (seven patients) or transatrial (two patients) approach and without resection of the conal septum, the ventricular septal patch was placed on the left side of the septum to deflect the conal septum anteriorly and away from the subaortic area. There were no early or late deaths. Median intensive care unit and hospital stays were 17 days (6 to 47 days) and 21 days (10 to 55 days), respectively. On follow-up echocardiography (1 to 29 months, median 12 months), no patients had significant residual subaortic obstruction and one patient had mild residual arch obstruction (20 mm Hg). Growth of the subaortic region was demonstrated in all patients (mean ratio of subaortic to descending aortic diameter, 1.20 +/- 0.10; < 0.001)., Conclusions: Relief of severe subaortic stenosis during one-stage neonatal repair of aortic arch interruption and ventricular septal defect can be accomplished successfully without resection of the conal septum.
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- 1996
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11. Shear strength of ceramic brackets bonded to porcelain.
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Whitlock BO 3rd, Eick JD, Ackerman RJ Jr, Glaros AG, and Chappell RP
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- Acid Etching, Dental, Bisphenol A-Glycidyl Methacrylate chemistry, Dental Stress Analysis, Electron Probe Microanalysis, Equipment Failure, Materials Testing, Microscopy, Electron, Scanning, Pilot Projects, Stress, Mechanical, Surface Properties, Adhesives chemistry, Ceramics chemistry, Dental Bonding, Dental Porcelain chemistry, Orthodontic Brackets
- Abstract
The purpose of this study was to compare the bond strengths of three different adhesive systems when used alone and combined with a porcelain priming agent to bond ceramic brackets to porcelain surfaces. Sixty porcelain specimens were randomly assigned to the six different treatment groups. Half were bonded with the porcelain priming agent and one of the adhesive systems and the other half with one of the adhesive systems alone. The shear bond strengths of all specimens were tested, with an Instron testing machine, 10 minutes after being bonded. The surface of the porcelain and the bracket base were examined, with scanning electron microscopy (SEM) and qualitative energy dispersive x-ray analysis (EDS), to determine the bond failure patterns and to check the porcelain surface for the presence of cracks and fractures. There was a statistically significant difference within each adhesive between those samples with the priming agent and those without the priming agent. Differences between the three adhesives were not statistically significant (p < or = 0.05).
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- 1994
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12. Use of 2-[F-18]-fluoro-2-deoxy-D-glucose PET to locate parathyroid adenomas in primary hyperparathyroidism.
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Sisson JC, Thompson NW, Ackerman RJ, and Wahl RL
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- Adenoma complications, Contrast Media, Fluorodeoxyglucose F18, Humans, Parathyroid Neoplasms complications, Adenoma diagnostic imaging, Deoxyglucose analogs & derivatives, Hyperparathyroidism etiology, Parathyroid Neoplasms diagnostic imaging, Tomography, Emission-Computed
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- 1994
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13. Validity and reliability of an "Adult Children of Alcoholics" Index.
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Gondolf EW and Ackerman RJ
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- Adult, Alcoholism rehabilitation, Female, Humans, Internal-External Control, Male, Psychometrics, Reproducibility of Results, Self Concept, Substance Abuse Treatment Centers, Alcoholism psychology, Child of Impaired Parents psychology, Personality Development, Personality Inventory statistics & numerical data
- Abstract
A 21-item Adult Children Of Alcoholics (ACOA) Index was statistically analyzed in an effort to develop a measure of identifying and assessing ACOAs. The ACOA Index, administered to a conference sample (n = 328), produced four factors suggesting rejection, impulsiveness, inconsistency, and deliberation. The ACOA Index was most highly correlated with indexes for mild depression and low self-esteem. ACOAs scored significantly higher on the ACOA Index than non-ACOAs with an overall correct classification of 67%. Test-retest procedure produced a Pearson r = .80 using a college student sample (n = 134), but only r = .40 for a sample of alcohol inpatients (n = 34). The alpha coefficient for the ACOA Index is .85.
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- 1993
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14. Impact of overbite on indicators of temporomandibular joint dysfunction.
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Glaros AG, Brockman DL, and Ackerman RJ
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- Adolescent, Adult, Chi-Square Distribution, Child, Electromyography, Facial Muscles physiopathology, Female, Humans, Male, Temporomandibular Joint physiopathology, Malocclusion complications, Temporomandibular Joint Dysfunction Syndrome etiology
- Abstract
Epidemiological studies have suggested that deep overbite is associated with symptoms of temporomandibular dysfunction (TMD). This finding was directly tested by deliberately constituted groups of deep and normal overbite subjects matched for age and sex. Eighty-one subjects participated. Dependent measures included the TMJ Scale test; measures of muscle activity in the right and left frontalis, temporalis, and masseter muscles; and pressure threshold meter readings for the same sites. The results showed no differences between deep and normal overbite subjects for all the dependent measures studied. The role of overbite alone in producing TMD symptoms is questioned.
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- 1992
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15. Adult children of alcoholics: the effects of background and treatment on ACOA symptoms.
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Ackerman RJ and Gondolf EW
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- Adult, Female, Humans, Internal-External Control, Male, Marriage psychology, Personality Inventory, Psychotherapy, Self Concept, Social Adjustment, Social Environment, Alcoholism psychology, Child of Impaired Parents psychology, Family psychology, Personality Development
- Abstract
This research attempts to identify the factors that differentiate adult children of alcoholics (ACOAs). A national purposive sample of ACOAs (n = 500) was administered an ACOA index measuring ACOA symptoms. An ANOVA analysis for the ACOA index scores showed gender, minority race or ethnicity, rating of parents' relationship, receiving help as a child, and seeking treatment as an adult to have significant effects. Notably, minorities scored significantly lower on the ACOA index, and seeking treatment increased the scores, even in interaction with parents' relationship and receiving help as a child. These findings point to the need for differentiating treatment for ACOAs and developing more effective treatment in general. They also confirm the importance of offering even informal support to children in troubled families.
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- 1991
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16. Class III with constricted maxilla treated without surgery.
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Lawson JF, Ackerman RJ Jr, and Hamilton SD
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- Adolescent, Female, Humans, Patient Care Planning, Malocclusion, Angle Class III therapy, Palatal Expansion Technique
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- 1991
17. The effectiveness of a counterrotational-action power toothbrush on plaque control in orthodontic patients.
- Author
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Wilcoxon DB, Ackerman RJ Jr, Killoy WJ, Love JW, Sakumura JS, and Tira DE
- Subjects
- Adolescent, Adult, Analysis of Variance, Child, Dental Plaque Index, Female, Humans, Male, Middle Aged, Periodontal Index, Rotation, Single-Blind Method, Toothbrushing methods, Dental Plaque prevention & control, Orthodontic Appliances adverse effects, Toothbrushing instrumentation
- Abstract
This study compared counterrotational-action power toothbrushing with manual toothbrushing in effectiveness on plaque control and gingival health in 20 randomly selected orthodontic patients at the University of Missouri-Kansas City. A blind two-group crossover design was used. Gingival and plaque scores were recorded, and a prophylaxis was given to bring the plaque score to zero. Ten subjects received counterrotational power brushes, and ten subjects received manual brushes. Instructions appropriate to each brushing method were given by a hygienist. At 30 and 60 days, plaque and gingival scores were recorded and a prophylaxis was given. At 60 days the subjects who were using power brushes were switched to manual brushes, and the subjects who were using manual brushes were switched to power brushes. At 30 and 60 days, plaque and gingival scores were recorded and a prophylaxis was given. Plaque and gingival scores were significantly less (p less than 0.01) after brushing 2 months with the counterrotational power brush than with the manual brush. This finding was irrespective of the sequence in which the brushes were used.
- Published
- 1991
- Full Text
- View/download PDF
18. Computers and ethical treatment for brain-injured patients.
- Author
-
Ackerman RJ and Banks ME
- Subjects
- Confidentiality, Diagnosis, Evaluation Studies as Topic, Family, Health Care Rationing, Health Personnel, Humans, Interdisciplinary Communication, Interprofessional Relations, Neuropsychology, Patient Care Team, Patient Selection, Prejudice, Professional Competence, Professional-Patient Relations, Quality of Health Care, Referral and Consultation, Societies, Scientific, Socioeconomic Factors, Treatment Outcome, Vulnerable Populations, Brain, Brain Diseases, Brain Injuries, Computers, Persons with Mental Disabilities, Psychology, Rehabilitation, Wounds and Injuries
- Published
- 1990
- Full Text
- View/download PDF
19. The Michigan School Study cephalometric norms expressed in template form.
- Author
-
Ackerman RJ
- Subjects
- Adolescent, Child, Face anatomy & histology, Female, Humans, Male, Michigan, Cephalometry methods, Maxillofacial Development
- Abstract
User-calibrated cephalometric templates have been presented for boys and girls at the ages of 6, 8, 10, 12, 14, and 16 years. The templates were derived by geometric triangulation from normative data published in An Atlas of Craniofacial Growth. A technique for using the templates diagnostically has also been presented.
- Published
- 1979
- Full Text
- View/download PDF
20. Exposure reduction and image quality in orthodontic radiology: a review of the literature.
- Author
-
Taylor TS, Ackerman RJ Jr, and Hardman PK
- Subjects
- Humans, Orthodontics, Radiation Protection, Cephalometry, Radiation Dosage, Radiographic Image Enhancement instrumentation, Radiography, Panoramic, X-Ray Intensifying Screens
- Abstract
This article summarizes the use of rare earth screen technology to achieve high-quality panoramic and cephalometric radiographs with sizable reductions in patient radiation dosage. Collimation, shielding, quality control, and darkroom procedures are reviewed to further reduce patient risk and improve image quality.
- Published
- 1988
- Full Text
- View/download PDF
21. Tooth migration during the transitional dentition.
- Author
-
Ackerman RJ Jr
- Subjects
- Adolescent, Cephalometry, Child, Dentition, Mixed anatomy & histology, Female, Humans, Male, Models, Dental, Tooth anatomy & histology, Tooth physiology, Tooth, Deciduous anatomy & histology, Tooth, Deciduous physiology, Dentition, Mixed physiology, Tooth Migration pathology, Tooth Migration physiopathology
- Abstract
Posteruptive tooth migration between 6 and 14 years involves both total arch displacement and intra-alveolar tooth movement. Central incisors, canines, and permanent first molars all drift forward within the alveolar bone. The molars, and to a lesser extent the incisors, drift occlusally. With respect to lingual arch contour, lateral movement of molars and canines is negligible.
- Published
- 1976
22. Bond strength of thermally recycled metal brackets.
- Author
-
Wheeler JJ and Ackerman RJ Jr
- Subjects
- Equipment Design, Hot Temperature, Humans, Stainless Steel, Stress, Mechanical, Tensile Strength, Dental Bonding, Orthodontic Appliances standards
- Abstract
Bracket recycling has emerged concurrently with the practice of direct bonding. This study was undertaken to determine the effect of recycling on the retention of mesh-backed stainless steel brackets. Mesh strand diameter was measured on forty new brackets. These brackets were bonded to recently extracted human premolar teeth, and the tensile force required to fracture each bond was recorded. The brackets were then reconditioned by a thermal process. The mesh strand size was remeasured and the tensile test was repeated. It was found that (1) mesh strand diameter decreased 7 percent during the reconditioning process (93.89 microns +/- 3.17 S.D. compared to 87.07 microns +/- 4.76 S.D., z = 17.62, P less than 1 X 10(-5) ), (2) new bracket bonds were 6 percent stronger than recycled bracket bonds (43.88 pounds +/- 7.98 S.D. bond strength), and (3) reduction in mesh strand diameter during the reconditioning process did not correlate with changes in bond strength between initial and recycled bonding (Pearson r = 0.038).
- Published
- 1983
- Full Text
- View/download PDF
23. Preforming Begg archwires.
- Author
-
Ackerman RJ Jr
- Subjects
- Orthodontic Appliances
- Published
- 1977
24. Testosterone metabolism in male rat epiphysis.
- Author
-
Ackerman RJ Jr and Hamilton DW
- Subjects
- Androstane-3,17-diol metabolism, Androstenedione metabolism, Animals, Cytosol metabolism, Dihydrotestosterone, Male, NADP, Nucleoproteins metabolism, Protein Binding, Rats, Subcellular Fractions metabolism, Epiphyses metabolism, Testosterone metabolism
- Abstract
Using radioactive substrate, thin-layer chromatography and recrystallization methods as well as differential centrifugation, gel filtration and electrophoresis, testosterone metabolism was investigated in male rat epiphyseal growth plate. 5alpha-androstane 3alpha-17beta-diol was found to be a major metabolite in vitro; lesser amounts of androstenedione and androstanedione, and a very small amount of 5alpha-dihydrotestosterone were also identified. Radioactivity was recovered in epiphyseal subcellular fractions 30 minutes following in vivo administration of tritiated 5alpha-dihydrotestosterone; within 2 hours radioactivity had fallen to essentially background level in all fractions but the cytosol. A testosterone binding protein could not be identified within epiphyseal cytosol.
- Published
- 1976
- Full Text
- View/download PDF
25. Full-scale color transparencies of cephalometric tracings.
- Author
-
Ackerman RJ
- Subjects
- Audiovisual Aids, Cephalometry
- Published
- 1976
26. Structure and function of amylases. II. Multiple forms of bacillus subtilis -amylase.
- Author
-
Robyt JF and Ackerman RJ
- Subjects
- Chromatography, Gel, Edetic Acid, Electrophoresis, Polyacrylamide Gel, Hydrogen-Ion Concentration, Isoenzymes, Macromolecular Substances, Models, Biological, Polymers, Sodium Chloride, Sodium Dodecyl Sulfate, Zinc, Amylases, Bacillus subtilis enzymology
- Published
- 1973
- Full Text
- View/download PDF
27. Reducing value methods for maltodextrins. II. Automated methods and chain-length independence of alkaline ferricyanide.
- Author
-
Robyt JF, Ackerman RJ, and Keng JG
- Subjects
- Amylases analysis, Animals, Chemistry Techniques, Analytical instrumentation, Kinetics, Maltose analysis, Methods, Oligosaccharides analysis, Oxidation-Reduction, Pancreas enzymology, Plants enzymology, Swine, Autoanalysis instrumentation, Ferricyanides, Polysaccharides analysis
- Published
- 1972
- Full Text
- View/download PDF
28. Reaction of protein disulfide groups with Ellman's reagent: a case study of the number of sulfhydryl and disulfide groups in Aspergillus oryzae -amylase, papain, and lysozyme.
- Author
-
Robyt JF, Ackerman RJ, and Chittenden CG
- Subjects
- Aspergillus enzymology, Disulfides analysis, Hydrogen-Ion Concentration, Spectrophotometry, Amylases analysis, Benzoates, Indicators and Reagents, Muramidase analysis, Papain analysis, Sulfhydryl Compounds analysis, Sulfides analysis
- Published
- 1971
- Full Text
- View/download PDF
29. Hormonal control of rat testicular phospholipids.
- Author
-
Gambal D and Ackerman RJ
- Subjects
- Animals, Chromatography, Hypophysectomy, Lipids analysis, Male, Phosphatidylinositols biosynthesis, Phospholipids analysis, Pituitary Gland transplantation, Rats, Sphingomyelins analysis, Testis analysis, Follicle Stimulating Hormone pharmacology, Lipids biosynthesis, Luteinizing Hormone pharmacology, Phospholipids biosynthesis, Testis metabolism, Testosterone pharmacology
- Published
- 1967
- Full Text
- View/download PDF
30. Favorable equilibria for the stoichiometry in the reaction of protein disulfide groups with Ellman reagent.
- Author
-
Ackerman RJ and Robyt JF
- Subjects
- Benzoates, Chemical Phenomena, Chemistry, Chromatography, Gel, Dithiothreitol, Hydrogen-Ion Concentration, Kinetics, Mercaptoethanol, Nitro Compounds, Spectrophotometry, Disulfides, Proteins
- Published
- 1972
- Full Text
- View/download PDF
31. Isolation, purification, and characterization of a maltotetraose-producing amylase from Pseudomonas stutzeri.
- Author
-
Robyt JF and Ackerman RJ
- Subjects
- Acetone, Ammonium Sulfate, Autoradiography, Catalysis, Chemical Phenomena, Chemical Precipitation, Chemistry, Chemistry, Physical, Chromatography, Gel, Chromatography, Paper, Drug Stability, Electrophoresis, Disc, Glycogen, Hot Temperature, Hydrogen-Ion Concentration, Macromolecular Substances, Maltose, Molecular Weight, Oligosaccharides chemical synthesis, Pectins, Polysaccharides, Pseudomonas growth & development, Amylases isolation & purification, Pseudomonas enzymology
- Published
- 1971
- Full Text
- View/download PDF
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