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Biomedical subjects

Iris R Bell

Publications and source records attributed to Iris R Bell.

At least 19 recordsLinked to original sources
PubMed2007

Effect of noise on microvascular integrity in laboratory rats.

Housing rats in an environment with high personnel activity increases microvascular leakiness to albumin in the mesenteric microcirculation and causes mast cell degranulation. In this study, rats were exposed to daily 15-min episodes of 90-dB SPL noise to determine whether similar effects occurred and whether vitamin E with a-lipoic acid or Traumeel (a homeopathic anti-inflammatory-analgesic) reduced these effects. Groups of rats fed a control diet (1000 IU/kg vitamin E) only, the control diet with Traumeel, or a diet with 10,000 IU/kg vitamin E and 1.65 g/kg lipoic acid were exposed to daily noise for 3 to 5 wk; a fourth group of rats, fed control diet, was housed with no excess noise. The rats were anesthetized, the superior mesenteric artery cannulated, and a portion of the microvasculature perfused for 1 min with fluoroscein isothiocyanate-albumin before fixing for microscopy. All groups exposed to excess noise had significantly more leaks per venule length and greater leak area per venule length than did the quiet group. However, the number and area of leaks in the rats that received Traumeel or vitamin E were significantly smaller than those in rats exposed to noise only. In addition, mast cell degranulation was significantly lower in rats given Traumeel. Thus exposure of rats to excessive noise produces structural damage in the mesenteric microvasculature that is significantly reduced by dietary supplements.

Acoustic Stimulation↗
PubMed2006

Models for the study of whole systems.

This article summarizes a network and complex systems science model for research on whole systems of complementary and alternative medicine (CAM) such as homeopathy and traditional Chinese medicine. The holistic concepts of networks and nonlinear dynamical complex systems are well matched to the global and interactive perspectives of whole systems of CAM, whereas the reductionistic science model is well matched to the isolated local organ, cell, and molecular mechanistic perspectives of pharmaceutically based biomedicine. Whole systems of CAM are not drugs with specific actions. The diagnostic and therapeutic approaches of whole systems of CAM produce effects that involve global and patterned shifts across multiple subsystems of the person as a whole. For homeopathy, several characteristics of complex systems, including the probabilistic nature of attractor patterns, variable sensitivity of complex systems to initial conditions, and emergent behaviors in the evolution of a system in its full environmental context over time, could help account for the mixed basic science and controlled clinical trial research findings, in contrast with the consistently positive outcomes of observational studies in the literature. Application of theories and methods from complex systems and network science can open a new era of advances in understanding factors that lead to good versus poor individual global outcome patterns and to rational triage of patients to one type of care over another. The growing reliance on complex systems thinking and systems biology for cancer research affords a unique opportunity to bridge between the CAM and conventional medical worlds with some common language and conceptual models.

Acupuncture Therapy↗
PubMed2005

Obstructive sleep apnea and ischemic heart disease in southwestern US veterans: implications for clinical practice.

This study describes associations between obstructive sleep apnea (OSA), intake of food rich in antioxidant nutrients, and ischemic heart disease (IHD) in military veterans. Subjects were male veterans (n=211), 54 to 85 years of age, and enrolled in primary care clinics at the Southern Arizona Veterans Affairs Health Care System (SAVAHCS), Tucson, AZ. Measures included the SAVAHCS Minority Vascular Center Questionnaire, the Sleep Heart Health Study Sleep Habits Questionnaire, the Arizona Food Frequency Questionnaire, height, weight, and blood pressure. Veterans with OSA were significantly more likely to be obese, to have elevated systolic blood pressure and physician-diagnosed IHD, more likely to undergo coronary angiography, and less likely to consume foods rich in cardioprotective antioxidants compared to veterans without OSA. After adjusting for confounding variables, the association between OSA and IHD remains significant [adjusted OR=2.99, confidence interval (CI)=1.07-8.42]. These data reinforce the importance of recognizing OSA within the veterans affairs health care system and suggest that early detection of OSA may improve veterans' health and well-being and reduce associated medical costs.

Aged↗
PubMed2005

JP-8 jet fuel exposure and divided attention test performance in 1991 Gulf War veterans.

INTRODUCTION: Previous research indicates that a large cohort of veterans from the 1991 Gulf War report polysymptomatic conditions. These syndromes often involve neurocognitive complaints, fatigue, and musculoskeletal symptoms, thus overlapping with civilian illnesses from low levels of environmental chemicals, chronic fatigue syndrome, and fibromyalgia. METHODS: To test for time-dependent changes over repeated intermittent exposures, we evaluated objective performance on a computerized visual divided attention test in chronically unhealthy Gulf War veterans (n = 22 ill with low-level chemical intolerance (CI); n = 24 ill without CI), healthy Gulf War veterans (n = 23), and healthy Gulf War era veterans (n = 20). Testing was done before and after each of three weekly, double blind, low-level JP-8 jet fuel or clean air sham exposure laboratory sessions, including acoustic startle stimuli. RESULTS: Unhealthy veterans receiving jet fuel had faster mean peripheral reaction times over sessions compared with unhealthy veterans receiving sham clean air exposures. Unhealthy Gulf veterans with CI exhibited faster post- vs. pre-session mean central reaction times compared with unhealthy Gulf veterans without CI. Findings were controlled for psychological distress variables. DISCUSSION: These data on unhealthy Gulf veterans show an acceleration of divided attention task performance over the course of repeated low-level JP-8 exposures. The present faster reaction times are consistent with rat neurobehavioral studies on environmental toxicant cross-sensitization and nonlinear dose-response patterns with stimulant drugs, as well as some previous civilian studies using other exposure agents. Together with previous research findings, the data suggest involvement of central nervous system dopaminergic pathways in affected Gulf veterans.

Adult↗
PubMed2004

Complementary and conventional medicine: a concept map.

BACKGROUND: Despite the substantive literature from survey research that has accumulated on complementary and alternative medicine (CAM) in the United States and elsewhere, very little research has been done to assess conceptual domains that CAM and conventional providers would emphasize in CAM survey studies. The objective of this study is to describe and interpret the results of concept mapping with conventional and CAM practitioners from a variety of backgrounds on the topic of CAM. METHODS: Concept mapping, including free sorts, ratings, and multidimensional scaling was used to organize conceptual domains relevant to CAM into a visual "cluster map." The panel consisted of CAM providers, conventional providers, and university faculty, and was convened to help formulate conceptual domains to guide the development of a CAM survey for use with United States military veterans. RESULTS: Eight conceptual clusters were identified: 1) Self-assessment, Self-care, and Quality of Life; 2) Health Status, Health Behaviors; 3) Self-assessment of Health; 4) Practical/Economic/ Environmental Concerns; 5) Needs Assessment; 6) CAM vs. Conventional Medicine; 7) Knowledge of CAM; and 8) Experience with CAM. The clusters suggest panelists saw interactions between CAM and conventional medicine as a critical component of the current medical landscape. CONCLUSIONS: Concept mapping provided insight into how CAM and conventional providers view the domain of health care, and was shown to be a useful tool in the formulation of CAM-related conceptual domains.

Cluster Analysis↗
PubMed2004

Development and validation of a new global well-being outcomes rating scale for integrative medicine research.

BACKGROUND: Researchers are finding limitations of currently available disease-focused questionnaire tools for outcome studies in complementary and alternative medicine/integrative medicine (CAM/IM). METHODS: Three substudies investigated the new one-item visual analogue Arizona Integrative Outcomes Scale (AIOS), which assesses self-rated global sense of spiritual, social, mental, emotional, and physical well-being over the past 24 hours and the past month. The first study tested the scale's ability to discriminate unhealthy individuals (n = 50) from healthy individuals (n = 50) in a rehabilitation outpatient clinic sample. The second study examined the concurrent validity of the AIOS by comparing ratings of global well-being to degree of psychological distress as measured by the Brief Symptom Inventory (BSI) in undergraduate college students (N = 458). The third study evaluated the relationships between the AIOS and positively- and negatively-valenced tools (Positive and Negative Affect Scale and the Positive States of Mind Scale) in a different sample of undergraduate students (N = 62). RESULTS: Substudy (i) Rehabilitation patients scored significantly lower than the healthy controls on both forms of the AIOS and a current global health rating. The AIOS 24-hours correlated moderately and significantly with global health (patients r = 0.50; controls r = 0.45). AIOS 1-month correlations with global health were stronger within the controls (patients r = 0.36; controls r = 0.50). Controls (r = 0.64) had a higher correlation between the AIOS 24-hour and 1-month forms than did the patients (r = 0.33), which is consistent with the presumptive improvement in the patients' condition over the previous 30 days in rehabilitation. Substudy (ii) In undergraduate students, AIOS scores were inversely related to distress ratings, as measured by the global severity index on the BSI (rAIOS24h = -0.42, rAIOS1month = -0.40). Substudy (iii) AIOS scores were significantly correlated with positive affect (rAIOS24h = 0.56, rAIOS1month = 0.57) and positive states of mind (rAIOS24h = 0.42, rAIOS1month = 0.45), and inversely correlated with negative affect (rAIOS24h = -0.41, rAIOS1month = -0.59). CONCLUSIONS: The AIOS is able to distinguish relatively sicker from relatively healthier individuals; and correlates in expected directions with a measure of distress and indicators of positive and negative affect and positive states of mind. The AIOS offers a tool for CAM/IM research that extends beyond a disease emphasis.

Adult↗
PubMed2004

Associations between chemical odor intolerance and sleep disturbances in community-living adults.

OBJECTIVE: To investigate associations between sleep disturbances and chemical odor intolerance (COI), which is the subjective report of feeling ill from common odors, such as carpet glue or pesticides. METHODS: This cross-sectional study consisted of government employees and their family members (n=140; 61% women, mean age=46.3 years) derived from a stratified cluster population living in Pima County, Tucson, AZ. Subjects completed a standard survey that included sleep symptoms, a validated measure of COI, and two questions regarding anxiety and depression. Odds ratios (OR) with 95% confidence intervals (CI) were computed to test the association between COI and sleep symptoms. Stratification according to the Mantel-Haenszel method and logistic regression models were used to test for confounding and/or effect modification. RESULTS: After adjusting for age and gender, subjects with COI were significantly more likely to report difficulty staying asleep (OR=3.06; CI=1.17-8.03), insufficient sleep (OR=3.93; CI=1.43-10.79), and nightmares (OR=3.17; CI=1.14-8.81) compared to persons without COI. Associations between COI, sleep maintenance problems and insufficient sleep were still significant after adjusting for gender and depression; however, the association between COI and nightmares became borderline. CONCLUSIONS: Compared to the non-COI, persons with COI are more likely to report sleep maintenance insomnia and insufficient sleep independent of self-reported depression. Nightmares appear to be related more to depression than to COI.

Adhesives↗
PubMed2004

EEG alpha sensitization in individualized homeopathic treatment of fibromyalgia.

Fibromyalgia (FM) patients show evidence of sensitizability in pain pathways and electroencephalographic (EEG) alterations. One proposed mechanism for the claimed effects of homeopathy, a form of complementary medicine used for FM, is time-dependent sensitization (TDS, progressive amplification) of host responses. This study examined possible sensitization-related changes in EEG relative alpha magnitude during a clinical trial of homeopathy in FM. A 4-month randomized, placebo-controlled double-blind trial of daily orally administered individualized homeopathy in physician-confirmed FM, with an additional 2-month optional crossover phase, included three laboratory sessions, at baseline, 3 and 6 months (N = 48, age 49.2 +/- 9.8 years, 94% women). Nineteen leads of EEG relative alpha magnitude at rest and during olfactory administration of treatment and control solutions were evaluated in each session. After 3 months, the active treatment group significantly increased, while the placebo group decreased, in global alpha-1 and alpha-2 during bottle sniffs over sessions. At 6 months, the subset of active patients who stayed on active continued to increase, while the active-switch subgroup reversed direction in alpha magnitude. Groups did not differ in resting alpha. Consistent with the TDS hypothesis, sniff alpha-1 and alpha-2 increases at 6 months versus baseline correlated with total amount of time on active remedy over all subjects (r = 0.45, p = .003), not with dose changes or clinical outcomes in the active group. The findings suggest initiation of TDS in relative EEG alpha magnitude by daily oral administration of active homeopathic medicines versus placebo, with laboratory elicitation by temporolimbic olfactory stimulation or sniffing.

Adult↗
PubMed2004

One size does not fit all: aptitude x treatment interaction (ATI) as a conceptual framework for complementary and alternative medicine outcome research. Part 1--what is ATI research?

When multiple treatment choices are available, the question is not just "which treatment is the best?" but more importantly "best or better for whom, when, and why?" Aptitude (or attribute) by treatment interaction (ATI) is a research paradigm that attempts to examine exactly that--how outcome depends on the match or mismatch between patients' specific characteristics and the treatment they receive. The purpose of this two-part paper is to introduce ATI methods as a conceptual framework into complementary and alternative medicine/integrative medicine (CAM/IM) outcome research. Part 1 presents key concepts in ATI research. Part 2 will present ATI research designs and discusses their applications to the examination of the relationships between individuals and therapies, and the illumination of the mechanisms that make therapies differentially effective. Based on this examination, we conclude that ATI research offers invaluable insights into the multifaceted package of care typically delivered in contemporary medicine and therefore should be included in the portfolio of all CAM/IM outcome research.

Aptitude↗
PubMed2004

Fostering a healing presence and investigating its mediators.

The purpose of this paper is the exploration and explication of the complex phenomena of "healing presence" and of appropriately supportive theoretical approaches to integrate emerging models for research design. Healing presence is described as an interpersonal, intrapersonal, and transpersonal to transcendent phenomenon that leads to a beneficial, therapeutic, and/or positive spiritual change within another individual (healee) and also within the healer. An integrated framework merging knowledge from diverse fields of research develops the multiple elements of healing presence, the healer, the healee's capacity for response and the healing effect as an entangled phenomenon. A conceptual systemic model is presented, and questions and dilemmas that emerge are delineated. An integrated qualitative-quantitative research design is proposed. A systemic relationship model, which includes the healer, the healee, and persons within the healee's environment is presented. The challenges are substantial, but the research questions are meaningful and worthwhile. The goal is to foster healing at bio-psycho-social-spiritual levels of the human being.

Attitude to Health↗
PubMed2004

Strength of vital force in classical homeopathy: bio-psycho-social-spiritual correlates within a complex systems context.

OBJECTIVE: To explore associations between a global rating for the classical homeopathic construct of vital force and clinician and patient ratings on previously validated bio-psycho-social-spiritual questionnaires. METHODS: Sixty-two (62) community-recruited patients with fibromyalgia (FM) were assessed at baseline prior to a clinical trial of individualized homeopathy. Two homeopaths jointly performed case-taking interviews. A conventional medical provider independently evaluated patients with a standardized history and physical examination. Homeopaths rated each patient's vital force (five-point Likert scale, with 1 = very weak to 5 = very strong). Homeopaths and the conventional medical provider rated their Clinical Global Impression (CGI) of the severity of illness (1 = normal; 7 = among the most extremely ill). Patients completed self-rating scales on pain, global health, mood, quality of life, coping style, health locus of control, multidimensional well-being, spirituality, sense of coherence, positive states of mind, and social desirability. RESULTS: Greater vital force ratings (mean 2.9 standard deviation [SD] 0.6) correlated moderately (p < or = 0.005) with less severe CGI illness ratings by the homeopaths (r =-0.59), decreased patient-rated mental confusion (r =-0.43), higher vigor (r = 0.38), and greater positive states of mind (r = 0.36). Vital force also showed correlations (p < 0.05) with lower CGI ratings by the conventional medical provider (r =-0.32), better selfrated quality of life (r = 0.33), lesser fatigue (r =-0.31), better global health (r = 0.29), greater sense of coherence (r = 0.28), powerful-others health locus of control (r = 0.27), increased emotional well-being (r = 0.27), and higher social desirability (r = 0.27), but not with age, pain, or illness duration. CONCLUSION: Homeopathic vital force ratings reflect better perceived mental function, energy, and positive dimensions of the individual, beyond absence of disease.

Activities of Daily Living↗
PubMed2004

Biofield detection: role of bioenergy awareness training and individual differences in absorption.

OBJECTIVE: To measure health care providers' capacity to detect biofields before and after bioenergy awareness training in relation to individual differences in the personality trait of absorption. METHODS: Twenty-seven (27) physicians, psychologists, and nurses participated in a 5-day intensive bioenergy healing training course with Rev. Rosalyn Bruyere. The course was part of the Associate Fellows Program in the Program in Integrative Medicine at the University of Arizona. Blindfolded participants received a 24-trial hand biofield detection test (HBDT) pretraining and post-training. The experimenter placed his or her dominant hand a few inches above the participant's left or right hand for 30-second trials. After each trial, the participant guessed which hand was being tested. Blocks contained two right- and two left-hand trials in different orders. Participants filled out Tellegen's Absorption Scale, a measure of the capacity to focus attention in tasks. RESULTS: Percent HBDT accuracy for the entire sample was 50.8% (standard deviation [SD] = 12.24) at pretraining (50% is chance); accuracy increased to 55.5% (SD = 12.38) at post-training (t = p = 2.08, p < 0.05). Pretraining absorption (mean = 23.9; SD = 5.52) was significantly correlated with degree of detection accuracy increase (r = 0.42, n = 22, p < 0.05). High absorption (mean = 28.2 n = 11) participants increased to 58.3% compared to 52.7% for low absorption (mean = 19.2 n = 11) participants. CONCLUSION: The findings support claims of energy healers that (1) training can improve bioenergy awareness, and (2) there are substantial individual differences in response to training.

Adaptation, Physiological↗
PubMed2004

Individual differences in response to randomly assigned active individualized homeopathic and placebo treatment in fibromyalgia: implications of a double-blinded optional crossover design.

OBJECTIVE: To assess individual difference characteristics of subgroups of patients with fibromyalgia (FM) patients with respect to the decision to stay in or switch from randomly-assigned verum or placebo treatment during an optional crossover phase of a double-blinded homeopathy study. DESIGN: Double-blinded, randomized, placebo-controlled, optional crossover clinical trial. PARTICIPANTS: Fifty-three (53) community-recruited patients with FM entered the optional crossover phase. INTERVENTION: Two homeopaths jointly selected an individualized homeopathic remedy for all patients. The pharmacy dispensed either verum LM remedy or indistinguishable placebo in accord with randomized assignment for 4 months and the patient's optional crossover decision for an additional 2 months. OUTCOME MEASURES: Patients completed a battery of baseline state/trait questionnaires, including mood, childhood neglect and abuse, and trait absorption. They rated global health (whole person-centered) and tender point pain on physical examination (disease-specific) at baseline, 3 months, and 6 months. RESULTS: Rates of optional crossover from verum to placebo or placebo to verum were comparable (p = 0.6; 31%, and 41%, respectively). The switch subgroups had greater baseline psychologic issues (emotional neglect in placebo-switch; depression and anger in verum-switch). The verum-stay subgroup scored highest on treatment helpfulness and included all six exceptional responders who fell, prior to crossover, into the top terciles for improvement in both global health and pain. Patients staying in their randomly assigned groups, active or placebo (n = 34), scored significantly higher in trait absorption than did those who switched groups (n = 19). CONCLUSION: Individual difference factors may predict better and poorer responders with FM to specific and nonspecific effects of homeopathic and placebo treatment.

Adult↗
PubMed2004

Electroencephalographic cordance patterns distinguish exceptional clinical responders with fibromyalgia to individualized homeopathic medicines.

OBJECTIVES: To characterize initial central nervous system responses to olfactory administration of homeopathic remedies as biomarkers for subsequently exceptional, simillimum-like clinical outcomes at a systemic level (i.e., both locally and globally). DESIGN: Double-blinded, randomized, placebo-controlled clinical trial. SETTING: A private homeopathic clinic in Phoenix, AZ, and a university laboratory in Tucson, AZ. PATIENTS: Sixty-two (62) persons with physician-confirmed fibromyalgia (FM) (mean age, 49 years; 94% women) enrolled; 53 completed the 3-month assessment visit. Exceptional responders (n = 6, 23% of active treatment group; none on placebo) were those with improvements in the top one-third for both tender point pain and global health ratings after 3 months. INTERVENTION: Patients took daily oral doses of treatment solution in LM (1/50,000 dilution) potency (active group received individualized remedy; placebo group received plain solvent). Dependent measures: Baseline and 3-month difference scores for initial prefrontal electroencephalographic alpha frequency cordance (EEG-C, a correlate of functional brain activity) during 16 pairs of randomized, double-blinded bottle sniffs (treatment minus control solutions). RESULTS: Exceptional responders versus other patients exhibited significantly more negative initial EEG-C difference scores at prefrontal sites. Right prefrontal cordance findings correlated with subsequently reduced pain (r = 0.85, p = 0.03), better global health (r =-0.73, p = 0.10), and trait absorption (genetically determined ability to focus attention selectively and fully) (r = 0.91, p = 0.012). CONCLUSIONS: These observations suggest prefrontal EEG-C as an early biomarker of individualized homeopathic medicine effects in patients with FM who later exhibit exceptional outcomes. Prefrontal cortex controls executive function, including ability to redirect attention. Interactions between executive function, absorption, and the simillimum remedy could facilitate exceptional responses.

Adult↗