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Medicine and Health Sciences

2003

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The Relation Of Dietary Patterns To Future Survival, Health, And Cardiovascular Events In Older Adults, Paula Diehr Dec 2003

The Relation Of Dietary Patterns To Future Survival, Health, And Cardiovascular Events In Older Adults, Paula Diehr

Paula Diehr

BACKGROUND: There have been few long-term follow-up studies of older adults who follow different dietary patterns. METHODS: We cluster-analyzed data on dietary fat, fiber, protein, carbohydrate, and calorie consumption from the U.S. Cardiovascular Health Study (mean age=73), and examined the relationship of the dietary clusters to outcomes 10 years later. RESULTS: The five clusters were named "Healthy diet" (relatively high in fiber and carbohydrate and low in fat), "Unhealthy diet" (relatively high in protein and fat, relatively low in carbohydrates and fiber); "High Calorie," "Low Calorie," and "Low 4," which was distinguished by higher alcohol consumption. The clusters were strongly …


Cd43 Modulates Severity And Onset Of Experimental Autoimmune Encephalomyelitis., Thandi M. Onami, M. L. Ford, A. Sperling, R. Ahmed, B. D. Evavold Dec 2003

Cd43 Modulates Severity And Onset Of Experimental Autoimmune Encephalomyelitis., Thandi M. Onami, M. L. Ford, A. Sperling, R. Ahmed, B. D. Evavold

Thandi M. Onami

Experimental autoimmune encephalomyelitis (EAE) is a mouse model of multiple sclerosis characterized by infiltration of activated CD4(+) T lymphocytes into tissues of the CNS. This study investigated the role of CD43 in the induction and progression of EAE. Results demonstrate that CD43-deficient mice have reduced and delayed clinical and histological disease severity relative to CD43(+/+) mice. This reduction was characterized by decreased CD4(+) T cell infiltration of the CNS of CD43(-/-) mice but similar numbers of Ag-specific T cells in the periphery, suggesting a defect in T cell trafficking to the CNS. The absence of CD43 also affected cytokine production, …


Effects Of Arginine Supplementation On Hemodynamics And Outcome, J. Reynolds, Jane Gervasio, G. Zaloga, L. Bortenschlager Nov 2003

Effects Of Arginine Supplementation On Hemodynamics And Outcome, J. Reynolds, Jane Gervasio, G. Zaloga, L. Bortenschlager

Jane M. Gervasio

Abstract from the ASHP Midyear Clinical Meeting, New Orleans, LA, December 7-11, 2003.


Small Bowel Necrosis As A Result Of Enteral Nutrition In Critically Ill Patients, J. Reynolds, Jane Gervasio, G. Zaloga Nov 2003

Small Bowel Necrosis As A Result Of Enteral Nutrition In Critically Ill Patients, J. Reynolds, Jane Gervasio, G. Zaloga

Jane M. Gervasio

Abstract from the ASHP Midyear Clinical Meeting, New Orleans, LA, December 7-11, 2003.


Emg Remains Fractionated In Parkinson's Disease, Despite Practice-Related Improvements In Performance, D. Flament, D. Vaillancourt, T. Kempf, K. Shannon, D. Cross Nov 2003

Emg Remains Fractionated In Parkinson's Disease, Despite Practice-Related Improvements In Performance, D. Flament, D. Vaillancourt, T. Kempf, K. Shannon, D. Cross

Timothy Kempf

Objective: We studied the ability of patients with Parkinson's disease to improve their performance in a motor task requiring both speed and accuracy in the execution of elbow flexion movements. Our goal was to investigate the changes in electromyographic activity associated with the changes in movement performance.

Methods: Eleven patients on anti-Parkinsonian medication were tested. The patients were selected for being bradykinetic, having little or no resting tremor or dyskinesias, and being in stages II or III of the Hoehn and Yahr rating scale.

Results: The untrained patients displayed multiple bursts of agonist activity, characteristic of Parkinsonian EMG recordings. All …


Patterns Of Breast Recurrence In A Pilot Study Of Brachytherapy Confined To The Lumpectomy Site For Early Breast Cancer With Six Years' Minimum Follow-Up, Francisco Perera, Edward Yu, Jay Engel, Ronald Holliday, Leslie Scott, Frank Chisela, Varagur Venkatesan Nov 2003

Patterns Of Breast Recurrence In A Pilot Study Of Brachytherapy Confined To The Lumpectomy Site For Early Breast Cancer With Six Years' Minimum Follow-Up, Francisco Perera, Edward Yu, Jay Engel, Ronald Holliday, Leslie Scott, Frank Chisela, Varagur Venkatesan

Edward Yu

PURPOSE: In this pilot study of high-dose-rate brachytherapy to the lumpectomy site as the sole radiation, ipsilateral and contralateral breast recurrences are documented with specific attention to the location of recurrence relative to the lumpectomy site. METHODS: Between March 1992 and January 1996, 39 patients with T1 (32 patients) and T2 breast cancers received 37.2 Gy in 10 fractions (b.i.d.) over 1 week prescribed to a volume encompassing the surgical clips. Thirteen received adjuvant tamoxifen, and 4 received chemotherapy. Follow-up included annual bilateral mammograms and clinical breast examination every 3 to 6 months. Whereas 13 patients had intraoperative implantation of …


Modeling The Optimum Duration Of Antibiotic Prophylaxis In An Anthrax Outbreak, Ron Brookmeyer, Elizabeth Johnson, Robert Bollinger Nov 2003

Modeling The Optimum Duration Of Antibiotic Prophylaxis In An Anthrax Outbreak, Ron Brookmeyer, Elizabeth Johnson, Robert Bollinger

Ron Brookmeyer

A critical consideration in effective and measured public health responses to an outbreak of inhalational anthrax is the optimum duration of antibiotic prophylaxis. We develop a competing-risks model to address the duration of antibiotic prophylaxis and the incubation period that accounts for the risks of spore germination and spore clearance. The model predicts the incubation period distribution, which is confirmed by empirical data. The optimum duration of antibiotic prophylaxis depends critically on the dose of inhaled spores. At high doses, we show that exposed persons would need to remain on antibiotic prophylaxis for at least 4 months, and considerable morbidity …


Statistical Models And Bioterrorism: Application To The U.S. Anthrax Outbreak, Ron Brookmeyer, Natalie Blades Nov 2003

Statistical Models And Bioterrorism: Application To The U.S. Anthrax Outbreak, Ron Brookmeyer, Natalie Blades

Ron Brookmeyer

In the fall of 2001 an outbreak of inhalational anthrax occurred in the United States that was the result of bioterrorism. Letters contaminated with anthrax spores were sent through the postal system. In response to the outbreak, public health officials treated over 10,000 persons with antibiotic prophylaxis in the hopes of preventing further morbidity and mortality. No persons receiving the antibiotics subsequently developed disease. The question arises as to how many cases of disease may actually have been prevented by the public health intervention of antibiotic prophylaxis. A statistical model is developed to answer this question by relating to the …


Will The Real Charles Fried Please Stand Up?, Paul Miller, Charles Weijer Nov 2003

Will The Real Charles Fried Please Stand Up?, Paul Miller, Charles Weijer

Charles Weijer

In response to the preceding commentary by Jerry Menikoff in this issue of the Journal, the authors argue that Fried's central concern is not that randomized clinical trials (RCTs) are conducted without consent, but rather that various aspects of the design and conduct of RCTs are in tension with physicians' duties of personal care to their patients. Although Fried does argue that the existence of equipoise cannot justify failure to obtain consent from research subjects, informed consent by itself does not supplant ill subjects' rights to personalized judgment and care embodied in Fried's equipoise.


Importance Of Informed Consent In Offering To Return Research Results To Research Participants, Conrad Fernandez, Eric Kodish, Charles Weijer Nov 2003

Importance Of Informed Consent In Offering To Return Research Results To Research Participants, Conrad Fernandez, Eric Kodish, Charles Weijer

Charles Weijer

No abstract provided.


Amygdala Hyperreactivity In Borderline Personality Disorder: Implications For Emotional Dysregulation, Nelson H. Donegan, Charles A. Sanislow, Hilary P. Blumberg, Robert K. Fulbright, Cheryl Lacadie, Pawel Skudlarski, John C. Gore, Ingrid R. Olson, Thomas H. Mcglashan, Bruce E. Wexler Nov 2003

Amygdala Hyperreactivity In Borderline Personality Disorder: Implications For Emotional Dysregulation, Nelson H. Donegan, Charles A. Sanislow, Hilary P. Blumberg, Robert K. Fulbright, Cheryl Lacadie, Pawel Skudlarski, John C. Gore, Ingrid R. Olson, Thomas H. Mcglashan, Bruce E. Wexler

Charles A. Sanislow, Ph.D.

BACKGROUND: Disturbed interpersonal relations and emotional dysregulation are fundamental aspects of borderline personality disorder (BPD). The amygdala plays important roles in modulating vigilance and generating negative emotional states and is often abnormally reactive in disorders of mood and emotion. The aim of this study was to assess amygdala reactivity in BPD patients relative to normal control subjects. We hypothesized that amygdala hyperreactivity contributes to hypervigilance, emotional dysregulation, and disturbed interpersonal relations in BPD.

METHODS: Using functional magnetic resonance imaging, we examined neural responses to 20-sec blocks of neutral, happy, sad, and fearful facial expression (or a fixation point) in 15 …


Quantitative And Qualitative Changes In Gene Expression Patterns Characterize The Activity Of Plaques In Multiple Sclerosis, Lotti Tajouri, Albert Mellick, Kevin Ashton, Anthony Tannenberg, Rashed Nagra, Wallace Tourtellotte, Lyn Griffiths Nov 2003

Quantitative And Qualitative Changes In Gene Expression Patterns Characterize The Activity Of Plaques In Multiple Sclerosis, Lotti Tajouri, Albert Mellick, Kevin Ashton, Anthony Tannenberg, Rashed Nagra, Wallace Tourtellotte, Lyn Griffiths

Lotti Tajouri

Multiple sclerosis (MS) is a complex autoimmune disorder of the CNS with both genetic and environmental contributing factors. Clinical symptoms are broadly characterized by initial onset, and progressive debilitating neurological impairment. In this study, RNA from MS chronic active and MS acute lesions was extracted, and compared with patient matched normal white matter by fluorescent cDNA microarray hybridization analysis. This resulted in the identification of 139 genes that were differentially regulated in MS plaque tissue compared to normal tissue. Of these, 69 genes showed a common pattern of expression in the chronic active and acute plaque tissues investigated (P value<0.0001, ρ=0.73, by Spearman's ρ analysis); while 70 transcripts were uniquely differentially expressed (≥1.5-fold) in either acute or chronic active tissues. These results included known markers of MS such as the myelin basic protein (MBP) and glutathione S-transferase (GST) M1, nerve growth factors, such as nerve injury-induced protein 1 (NINJ1), X-ray and excision DNA repair factors (XRCC9 and ERCC5) and X-linked genes such as the ribosomal protein, RPS4X. Primers were then designed for seven array-selected genes, including transferrin (TF), superoxide dismutase 1 (SOD1), glutathione peroxidase 1 (GPX1), GSTP1, crystallin, alpha-B (CRYAB), phosphomannomutase 1 (PMM1) and tubulin β-5 (TBB5), and real time quantitative (Q)-PCR analysis was performed. The results of comparative Q-PCR analysis correlated significantly with those obtained by array analysis (r=0.75, P value<0.01, by Pearson's bivariate correlation). Both chronic active and acute plaques shared the majority of factors identified suggesting that quantitative, rather than gross qualitative differences in gene expression pattern may define the progression from acute to chronic active plaques in MS.


Marketing Lifestyles: The Gravity Games And Generation Y., Anthony Lachowetz, G. Bennet Oct 2003

Marketing Lifestyles: The Gravity Games And Generation Y., Anthony Lachowetz, G. Bennet

Anthony J Lachowetz

No abstract provided.


Critical Care Nurses Be Aware: Lemierre's Syndrome Is On The Rise, Roseanne Jane, Patricia Johnson Oct 2003

Critical Care Nurses Be Aware: Lemierre's Syndrome Is On The Rise, Roseanne Jane, Patricia Johnson

Patricia Johnson

Lemierre's syndrome (LS) typically occurs in previously healthy young adolescents and young adults who become acutely ill following an attack of pharyngotonsillitis. Also known as post anginal sepsis, those afflicted develop pyrexia, rigours and multiple metastatic abscesses that lead to septic thrombophlebitis of the internal jugular vein. In the pre-antibiotic era this particularly virulent syndrome had a mortality rate in excess of 90%, but since the introduction of antibiotics and the widespread treatment of throat infections, it has became almost unknown. However, due to a number of factors, including a reduction in the use of antibiotics for the treatment of …


Shifting From Hypofractionated To "Conventionally" Fractionated Thoracic Radiotherapy: A Single Institution's 10-Year Experience In The Management Of Limited-Stage Small-Cell Lung Cancer Using Concurrent Chemoradiation, Gregory Videtic, Pauline Truong, A. Dar, Edward Yu, Larry Stitt Oct 2003

Shifting From Hypofractionated To "Conventionally" Fractionated Thoracic Radiotherapy: A Single Institution's 10-Year Experience In The Management Of Limited-Stage Small-Cell Lung Cancer Using Concurrent Chemoradiation, Gregory Videtic, Pauline Truong, A. Dar, Edward Yu, Larry Stitt

Edward Yu

PURPOSE: To perform a retrospective review of a single institution's 10-year experience in treating limited-stage small-cell lung cancer (LS-SCLC) with a concurrent chemoradiation regimen modeled after the experimental arm of a randomized National Cancer Institute of Canada trial in which hypofractionated radiotherapy started with cycle 2 of chemotherapy. We then looked at the impact on patient outcomes of changing the RT during the course of the decade to a "conventionally" (2 Gy) fractionated regimen, with a focus on toxicity and survival rates. METHODS AND MATERIALS: Between 1989 and 1999, 215 LS-SCLC patients received six cycles of chemotherapy consisting of cyclophosphamide, …


The Efficacy Of A Work-Station Intervention Program To Improve Functional Ability And Flexibility In Ageing Clients With Cerebral Palsy: A Pilot Study, Nancy Low Choy, Rosemary Isles, Ruth Barker, Jennifer Nitz Oct 2003

The Efficacy Of A Work-Station Intervention Program To Improve Functional Ability And Flexibility In Ageing Clients With Cerebral Palsy: A Pilot Study, Nancy Low Choy, Rosemary Isles, Ruth Barker, Jennifer Nitz

Nancy Low Choy

Purpose:
Health care workers associated with the long-term care of ageing clients with Cerebral Palsy have reported on the adverse effects of less active daily activity programmes with resultant decreased functional mobility. While the negative effects of ageing have been reported in these clients, programmes have not been implemented to determine whether these adverse changes can be reversed or prevented. The efficacy of a work-station intervention programme to improve functional ability and flexibility in ageing clients with cerebral palsy was investigated.

Method:
A clinical intervention study using repeated measures (pre/post-intervention and at follow-up) to evaluate efficacy was undertaken. Twenty-two clients …


The Natural Course Of Bulimia Nervosa And Eating Disorder Not Otherwise Specified Is Not Influenced By Personality Disorders, Carlos M. Grilo, Charles A. Sanislow, M. Tracie Shea, Andrew E. Skodol, Robert L. Stout, Maria E. Pagano, Shirley Yen, Thomas H. Mcglashan Oct 2003

The Natural Course Of Bulimia Nervosa And Eating Disorder Not Otherwise Specified Is Not Influenced By Personality Disorders, Carlos M. Grilo, Charles A. Sanislow, M. Tracie Shea, Andrew E. Skodol, Robert L. Stout, Maria E. Pagano, Shirley Yen, Thomas H. Mcglashan

Charles A. Sanislow, Ph.D.

Objective: To examine prospectively the natural course of bulimia nervosa (BN) and eating disorder not otherwise specified (EDNOS) and to test the effects of personality disorder (PD) comorbidity on the outcomes.

Method: Ninety-two female patients with current BN (N ¼ 23) or EDNOS (N ¼ 69) were evaluated at baseline enrollment in the Collaborative Longitudinal Personality Disorders Study (CLPS). Eating disorders (EDs) were assessed with the Structured Clinical Interview for DSM-IV Axis I Disorders. Personality disorders (PDs) were assessed with the Diagnostic Interview for DSM-IV PD (DIPD-IV). The course of BN and EDNOS was assessed with the Longitudinal Interval Follow-up …


Clinical Features And Impairment In Women With Borderline Personality Disorder (Bpd) With Post-Traumatic Stress Disorder (Ptsd), Bpd Without Ptsd, And Other Personality Disorders With Ptsd, Caron Zlotnick, Dawn M. Johnson, Shirley Yen, Cynthia Battle, Charles A. Sanislow, Andrew E. Skodol, Carlos M. Grilo, Thomas H. Mcglashan, John G. Gunderson, Donna S. Bender, Mary C. Zanarini, M. Tracie Shea Oct 2003

Clinical Features And Impairment In Women With Borderline Personality Disorder (Bpd) With Post-Traumatic Stress Disorder (Ptsd), Bpd Without Ptsd, And Other Personality Disorders With Ptsd, Caron Zlotnick, Dawn M. Johnson, Shirley Yen, Cynthia Battle, Charles A. Sanislow, Andrew E. Skodol, Carlos M. Grilo, Thomas H. Mcglashan, John G. Gunderson, Donna S. Bender, Mary C. Zanarini, M. Tracie Shea

Charles A. Sanislow, Ph.D.

The aims of this study were to examine differences in clinical features, impairment, and types of childhood traumas among women with borderline personality disorder (BPD), women with BPD and posttraumatic stress disorder (PTSD), and those with other personality disorders and PTSD. Using baseline data from the Collaborative Longitudinal Study of Personality Disorders, 186 women were divided into 3 groups (BPD+PTSD, BPD, PTSD), based on structured diagnostic interviews for Axis I and Axis II disorders and compared on selected clinical variables. The additional diagnosis of PTSD in borderline women did not significantly increase the degree of borderline pathology and psychiatric morbidity …


Rejoinder To "“Wavelet-Based Nonparametric Modeling Of Hierarchical Functions In Colon Carcinogenesis.”, Jeffrey S. Morris, Marina Vannucci, Philip J. Brown, Raymond J. Carroll Oct 2003

Rejoinder To "“Wavelet-Based Nonparametric Modeling Of Hierarchical Functions In Colon Carcinogenesis.”, Jeffrey S. Morris, Marina Vannucci, Philip J. Brown, Raymond J. Carroll

Jeffrey S. Morris

No abstract provided.


Quality Control And Peak Finding For Proteomics Data Collected From Nipple Aspirate Fluid Using Surface Enhanced Laser Desorption And Ionization., Jeffrey S. Morris, Kevin R. Coombes, Herbert A. Fritsche, Charlotte Clarke, Jeng-Neng Chen, Keith A. Baggerly, Lian-Chun Xiao, Mien-Chie Hung, Henry M. Kuerer Oct 2003

Quality Control And Peak Finding For Proteomics Data Collected From Nipple Aspirate Fluid Using Surface Enhanced Laser Desorption And Ionization., Jeffrey S. Morris, Kevin R. Coombes, Herbert A. Fritsche, Charlotte Clarke, Jeng-Neng Chen, Keith A. Baggerly, Lian-Chun Xiao, Mien-Chie Hung, Henry M. Kuerer

Jeffrey S. Morris

Background: Recently, researchers have been using mass spectroscopy to study cancer. For use of proteomics spectra in a clinical setting, stringent quality-control procedures will be needed.

Methods: We pooled samples of nipple aspirate fluid from healthy breasts and breasts with cancer to prepare a control sample. Aliquots of the control sample were used on two spots on each of three IMAC ProteinChip® arrays (Ciphergen Biosystems, Inc.) on 4 successive days to generate 24 SELDI spectra. In 36 subsequent experiments, the control sample was applied to two spots of each ProteinChip array, and the resulting spectra were analyzed to determine how …


Imputation Of Missing Longitudinal Data: A Comparison Of Methods, Paula Diehr, Jean Mundahl Engels Oct 2003

Imputation Of Missing Longitudinal Data: A Comparison Of Methods, Paula Diehr, Jean Mundahl Engels

Paula Diehr

BACKGROUND AND OBJECTIVES: Missing information is inevitable in longitudinal studies, and can result in biased estimates and a loss of power. One approach to this problem is to impute the missing data to yield a more complete data set. Our goal was to compare the performance of 14 methods of imputing missing data on depression, weight, cognitive functioning, and self-rated health in a longitudinal cohort of older adults. METHODS: We identified situations where a person had a known value following one or more missing values, and treated the known value as a "missing value." This "missing value" was imputed using …


Comparative Analysis And Expression Of Clul1, A Cone Photoreceptor-Specific Gene, Qi Zhang, William A. Beltran, Zuohua Mao, Kui Li, Jennifer L. Johnson, Gregory M. Acland, Gustavo D. Aguirre Sep 2003

Comparative Analysis And Expression Of Clul1, A Cone Photoreceptor-Specific Gene, Qi Zhang, William A. Beltran, Zuohua Mao, Kui Li, Jennifer L. Johnson, Gregory M. Acland, Gustavo D. Aguirre

Gustavo D. Aguirre, VMD, PhD

Purpose: To characterize CLUL1, a cone photoreceptor-specific gene.
Methods: A comparative genomics approach was used to analyze the gene organization and protein sequence of a retinal clusterin-like protein and to identify conserved elements between human and dog. Its expression was studied by Northern and Western analyses and its localization by in situ hybridization and immunocytochemistry.
Results: The CLUL1 sequences of the human and dog share 85% and 73% identity, respectively, at the nucleotide and deduced amino acid level. The gene is organized into nine exons and shows strong homology, not only in exonic but also in some intronic sequences between the species. …


High-Field 19.6 T 27Al Solid-State Mas Nmr Of In Vitro Aluminated Brain Tissue, Pamela L. Bryant, Walter J. Lukiw, Zhehong Gan, Randall W. Hall, Leslie G. Butler Sep 2003

High-Field 19.6 T 27Al Solid-State Mas Nmr Of In Vitro Aluminated Brain Tissue, Pamela L. Bryant, Walter J. Lukiw, Zhehong Gan, Randall W. Hall, Leslie G. Butler

Randall W. Hall

The combination of 27Al high-field solid-state NMR (19.6 T) with rapid spinning speeds (17.8 kHz) is used to acquire 27Al NMR spectra of total RNA human brain temporal lobe tissues exposed to 0.10 mM Al3+ (as AlCl3) and of human retinal pigment epithelial cells (ARPE-19), grown in 0.10 mM AlCl3. The spectra of these model systems show multiple Al3+ binding sites, good signal/noise ratios and apparent chemical shift dispersions. A single broad peak (−3 to 11 ppm) is seen for the aluminated ARPE-19 cells, consistent with reported solution-state NMR chemical shifts of Al-transferrin. The aluminated brain tissue has a considerably …


Obat Telinga Gatal Karena Jamur, Obatgatal Seluruhtubuh Sep 2003

Obat Telinga Gatal Karena Jamur, Obatgatal Seluruhtubuh

obatgatal seluruhtubuh

obat telinga gatal karena jamur
Untuk pemesanan dan konsultasi bisa hubungi HP atau WA:081903433675


Cara Mengatasi Gatal Pada Selakangan, Obatgataldi Selangkangantradisional Sep 2003

Cara Mengatasi Gatal Pada Selakangan, Obatgataldi Selangkangantradisional

obatgataldi selangkangantradisional

cara mengatasi gatal pada selakangan
Untuk pemesanan dan konsultasi bisa hubungi HP atau WA:081903433675


Wavelet-Based Nonparametric Modeling Of Hierarchical Functions In Colon Carcinogenesis., Jeffrey S. Morris, Marina Vannucci, Philip J. Brown, Raymond J. Carroll Sep 2003

Wavelet-Based Nonparametric Modeling Of Hierarchical Functions In Colon Carcinogenesis., Jeffrey S. Morris, Marina Vannucci, Philip J. Brown, Raymond J. Carroll

Jeffrey S. Morris

In this article we develop new methods for analyzing the data from an experiment using rodent models to investigate the effect of type of dietary fat on O6-methylguanine-DNA-methyltransferase (MGMT), an important biomarker in early colon carcinogenesis. The data consist of observed profiles over a spatial variable contained within a two-stage hierarchy, a structure that we dub hierarchical functional data. We present a new method providing a unified framework for modeling these data, simultaneously yielding estimates and posterior samples for mean, individual, and subsample-level profiles, as well as covariance parameters at the various hierarchical levels. Our method is nonparametric in that …


The Location Of The Mental Foramen In A Selected Malay Population, W.C. Ngeow, Y. Yuzawati Sep 2003

The Location Of The Mental Foramen In A Selected Malay Population, W.C. Ngeow, Y. Yuzawati

Wei Cheong Ngeow

Knowledge of the position of the mental foramen is important both when administering regional anesthesia and performing periapical surgery in the mental region of the mandible. This study determines the position of the mental foramen in a selected Malay population. One hundred and sixty nine panoramic radiographs of Malay patients retrieved from a minor oral surgery waiting list were selected to identify the normal range for the position of the mental foramen. The foramen was not included in the study if there was any mandibular tooth missing between the lower left and right first molars (36-46). The findings indicated the …


Trajectories Of Health For Older Adults Over Time: Accounting Fully For Death, Paula Diehr Sep 2003

Trajectories Of Health For Older Adults Over Time: Accounting Fully For Death, Paula Diehr

Paula Diehr

The process of healthy aging can best be described by plotting the trajectory of health-related variables over time. Unfortunately, graphs including data only from survivors may be misleading because they may confuse patterns of mortality with patterns of change in health. Two approaches for creating graphs that account for death in such situations are 1) to incorporate a category or value for death into the longitudinal health variable and 2) to measure time in years before death or some other event. The first approach has been applied to self-rated health (excellent to poor) and the 36-Item Short-Form Health Survey (SF-36). …


Accounting For Deaths In Longitudinal Studies Using The Sf-36: The Performance Of The Physical Component Scale Of The Short Form 36-Item Health Survey And The Pctd, Paula Diehr Sep 2003

Accounting For Deaths In Longitudinal Studies Using The Sf-36: The Performance Of The Physical Component Scale Of The Short Form 36-Item Health Survey And The Pctd, Paula Diehr

Paula Diehr

BACKGROUND: Commonly used measures such as the Physical Component Scale of the Short Form 36-item health survey (PCS) are undefined at death, limiting longitudinal analyses to survivors, a healthier cohort that cannot be identified prospectively, and that might have had little change in health. One proposed approach is to transform the PCS into the Physical Component Transformed, with Deaths included (PCTD), which is the probability of being healthy 1 year later and for which deaths logically have a value of zero. Data missing for other reasons than death have not been considered. OBJECTIVE: To examine the performance of the PCTD, …


Identical Ribosomal Dna Sequence Data From Pfiesteria Piscicida (Dinophyceae) Isolates With Different Toxicity Phenotypes, Torstein Tengs Sep 2003

Identical Ribosomal Dna Sequence Data From Pfiesteria Piscicida (Dinophyceae) Isolates With Different Toxicity Phenotypes, Torstein Tengs

Dr. Torstein Tengs

Complete small subunit ribosomal RNA, internal transcribed spacer 1 and 2, 5.8S, and partial large subunit ribosomal RNA gene sequences were generated from multiple isolates of Pfiesteria piscicida. Sequences were derived from isolates that have been shown to be ichthyotoxic as well as isolates that have no history of toxic behavior. All of the sequences generated were identical for the different cultures, and we therefore conclude that differences in toxicity seen between isolates of P. piscicida are linked to factors other than genetic strain variation detectable by ribosomal gene sequence analyses.