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Goldberg DP, Blackwell B. Psychiatric illness in general practice. A detailed study using a new method of case identification. BRITISH MEDICAL JOURNAL 1970; 1:439-43. [PMID: 5420206 PMCID: PMC1700485 DOI: 10.1136/bmj.2.5707.439] [Citation(s) in RCA: 725] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A self-administered questionary (the General Health Questionnaire) aimed at detecting current psychiatric disturbance was given to 553 consecutive attenders to a general practitioner's surgery. A sample of 200 of these patients was given an independent assessment of their mental state by a psychiatrist using a standardized psychiatric interview. Over 90% of the patients were correctly classified as "well" or "ill" by the questionary, and the correlation between questionary score and the clinical assessment of severity of disturbance was found to be +0.80.The "conspicuous psychiatric morbidity" of a suburban general practice assessed by a general practitioner who was himself a psychiatrist and validated against independent psychiatric assessment was found to be 20%. "Hidden psychiatric morbidity" was found to account for one-third of all disturbed patients. These patients were similar to patients with "conspicuous illnesses" in terms both of degree of disturbance and the course of their illnesses at six-month follow-up, but were distinguished by their attitude to their illness and by usually presenting a physical symptom to the general practitioner.When 87 patients who had been assessed as psychiatric cases at the index consultation were called back for follow-up six months later, two-thirds of them were functioning in the normal range. Frequency of attendance at the surgery in the six months following index consultation was found to have only a modest relationship to severity of psychiatric disturbance.It is argued that minor affective illnesses and physical complaints often accompany each other and usually have a good prognosis.
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research-article |
55 |
725 |
2
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52 |
379 |
3
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Blackwell B, Marley E, Price J, Taylor D. Hypertensive interactions between monoamine oxidase inhibitors and foodstuffs. Br J Psychiatry 1967; 113:349-65. [PMID: 6034391 DOI: 10.1192/bjp.113.497.349] [Citation(s) in RCA: 205] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Hypertensive attacks during treatment with amine oxidase inhibitors were first described in tuberculous patients, and were “rediscovered'’ when these drugs were introduced into psychiatry. In an assessment of iproniazid for tuberculosis (Ogilvie, 1955), 4 out of 42 patients experienced “attacks of a most distressing nature”, with severe throbbing occipital headache and high blood pressure. Six years later, similar attacks were observed in 5 out of 212 patients treated for depression with nialamide (Davies, 1959), but it was not until the introduction of tranylcypromine that reports again appeared (Lurie and Salzer, 1961; Clark, 1961). By the beginning of 1963, over 40 such cases had been reported, including several complicated by intracerebral haemorrhage or cardiac failure due to the rise in blood pressure (Songco, 1961; McClure, 1962; Dorrell, 1963).
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58 |
205 |
4
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Stadtmauer EA, Pasquini MC, Blackwell B, Hari P, Bashey A, Devine S, Efebera Y, Ganguly S, Gasparetto C, Geller N, Horowitz MM, Koreth J, Knust K, Landau H, Brunstein C, McCarthy P, Nelson C, Qazilbash MH, Shah N, Vesole DH, Vij R, Vogl DT, Giralt S, Somlo G, Krishnan A. Autologous Transplantation, Consolidation, and Maintenance Therapy in Multiple Myeloma: Results of the BMT CTN 0702 Trial. J Clin Oncol 2019; 37:589-597. [PMID: 30653422 PMCID: PMC6553842 DOI: 10.1200/jco.18.00685] [Citation(s) in RCA: 193] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2018] [Indexed: 12/15/2022] Open
Abstract
PURPOSE Single-cycle melphalan 200 mg/m2 and autologous hematopoietic cell transplantation (AHCT) followed by lenalidomide (len) maintenance have improved progression-free survival (PFS) and overall survival (OS) for transplantation-eligible patients with multiple myeloma (MM). We designed a prospective, randomized, phase III study to test additional interventions to improve PFS by comparing AHCT, tandem AHCT (AHCT/AHCT), and AHCT and four subsequent cycles of len, bortezomib, and dexamethasone (RVD; AHCT + RVD), all followed by len until disease progression. PATIENTS AND METHODS Patients with symptomatic MM within 12 months from starting therapy and without progression who were age 70 years or younger were randomly assigned to AHCT/AHCT + len (n = 247), AHCT + RVD + len (n = 254), or AHCT + len (n = 257). The primary end point was 38-month PFS. RESULTS The study population had a median age of 56 years (range, 20 to 70 years); 24% of patients had high-risk MM, 73% had a triple-drug regimen as initial therapy, and 18% were in complete response at enrollment. The 38-month PFS rate was 58.5% (95% CI, 51.7% to 64.6%) for AHCT/AHCT + len, 57.8% (95% CI, 51.4% to 63.7%) for AHCT + RVD + len, and 53.9% (95% CI, 47.4% to 60%) for AHCT + len. For AHCT/AHCT + len, AHCT + RVD + len, and AHCT + len, the OS rates were 81.8% (95% CI, 76.2% to 86.2%), 85.4% (95% CI, 80.4% to 89.3%), and 83.7% (95% CI, 78.4% to 87.8%), respectively, and the complete response rates at 1 year were 50.5% (n = 192), 58.4% (n = 209), and 47.1% (n = 208), respectively. Toxicity profiles and development of second primary malignancies were similar across treatment arms. CONCLUSION Second AHCT or RVD consolidation as post-AHCT interventions for the up-front treatment of transplantation-eligible patients with MM did not improve PFS or OS. Single AHCT and len should remain as the standard approach for this population.
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Clinical Trial, Phase III |
6 |
193 |
5
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Grade C, Redford B, Chrostowski J, Toussaint L, Blackwell B. Methylphenidate in early poststroke recovery: a double-blind, placebo-controlled study. Arch Phys Med Rehabil 1998; 79:1047-50. [PMID: 9749682 DOI: 10.1016/s0003-9993(98)90169-1] [Citation(s) in RCA: 181] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To determine the efficacy and safety of methylphenidate in acute stroke rehabilitation. DESIGN A prospective, randomized, double-blind, placebo-controlled study. PATIENTS AND SETTING Twenty-one stroke patients consecutively admitted to a community-based rehabilitation unit. INTERVENTION Three-week treatment of methylphenidate (or placebo) in conjunction with physical therapy. Methylphenidate was started at 5mg and increased gradually to 30mg (15mg at 8:00AM and 15mg at 12:00 noon), and discontinued before discharge. MAIN OUTCOME MEASURES Mood measures included the Hamilton Depression Rating Scale (HAM-D) and Zung Self-Rating Depression Scale (ZDS). Cognitive status was evaluated using the Mini-Mental State Exam (MMSE). Motor functioning was assessed using the Fugl-Meyer Scale (FMS) and a modified version of the Functional Independence Measure (M-FIM). All measures were administered pretreatment and weekly thereafter. Side effects were measured after each increase in dosage and weekly. RESULTS Patients receiving methylphenidate treatment scored lower on the HAM-D (F(1,18)=5.714, p=.028), lower on the ZDS (F(1,18)=4.206, p=.055), higher on the M-FIM (F(1,18)=5.374, p=.032), and higher on the FMS (F(1,9)=4.060, p=.075) than patients receiving placebo. CONCLUSION Methylphenidate appears to be a safe and effective intervention in early poststroke rehabilitation that may expedite recovery.
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Clinical Trial |
27 |
181 |
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Whitehead WE, Winget C, Fedoravicius AS, Wooley S, Blackwell B. Learned illness behavior in patients with irritable bowel syndrome and peptic ulcer. Dig Dis Sci 1982; 27:202-8. [PMID: 7075418 DOI: 10.1007/bf01296915] [Citation(s) in RCA: 175] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Chronic illness behavior is defined by frequent visits to physicians, multiple somatic complaints, and disability disproportionate to physical findings. The prevalence of chronic illness behavior in people with irritable bowel syndrome and peptic ulcer was studied in a telephone survey of 832 people from metropolitan Cincinnati. People with irritable bowel syndrome (8% of the sample) were more likely than people with peptic ulcer (10% of the sample), and also more likely than the general population, to have multiple somatic complaints, to view their colds and flus as more serious than those of other people, and to consult a physician for minor illnesses. People with peptic ulcer were not different from the rest of the population in these regards. Chronic illness behavior appears to be learned; people who recalled being given gifts or special foods when they had a cold or flu as a child were more likely to exhibit chronic illness behavior and also more likely to have irritable bowel syndrome. These results suggest that social learning may contribute to the etiology of irritable bowel syndrome but not peptic ulcer.
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Comparative Study |
43 |
175 |
7
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Abstract
A large part of medical practice is complicated by two problems; the degree to which treatments are specific (the placebo problem) and the extent to which they are implemented (the adherence problem). Depending on setting and circumstance, up to half of the benefits of treatment are either non-specific or never obtained. This review considers the problem of adherence in the context of use of medication in psychiatry.
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Review |
49 |
162 |
8
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Cui W, Wood P, Blackwell B, Nikiforuk J. Physicochemical properties and structural characterization by two-dimensional NMR spectroscopy of wheat β-D-glucan—comparison with other cereal β-D-glucans. Carbohydr Polym 2000. [DOI: 10.1016/s0144-8617(99)00143-5] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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25 |
151 |
9
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53 |
125 |
10
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Ederer F, Gaasterland DA, Dally LG, Kim J, VanVeldhuisen PC, Blackwell B, Prum B, Shafranov G, Allen RC, Beck A. The Advanced Glaucoma Intervention Study (AGIS): 13. Comparison of treatment outcomes within race: 10-year results. Ophthalmology 2004; 111:651-64. [PMID: 15051195 DOI: 10.1016/j.ophtha.2003.09.025] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2002] [Accepted: 08/01/2003] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To present for black and white patients with medically uncontrolled glaucoma 10-year results of treatment with 1 of 2 randomly assigned surgical intervention sequences. DESIGN Randomized clinical trial. PARTICIPANTS Three hundred thirty-two black patients (451 eyes) and 249 white patients (325 eyes). Eyes had glaucoma that could not be controlled with medications alone. METHODS Eyes were randomly assigned to 1 of 2 sequences: argon laser trabeculoplasty (ALT)-trabeculectomy-trabeculectomy (ATT) or trabeculectomy-ALT-trabeculectomy (TAT). Second and third interventions were offered after failure of the preceding intervention. Minimum required intraocular pressure (IOP) for intervention failure ranged upward from 18 mmHg, the value depending on whether recent optic disc or visual field (VF) deterioration occurred, and on the magnitude of the field defect. Patients were observed every 6 months, with total potential follow-up ranging from 8 years, 4 months to 13 years. MAIN OUTCOME MEASURES The averages over follow-up of (1) the percentage of eyes having moderate loss of VF and (2) the percentage of eyes having moderate loss of visual acuity (VA). RESULTS Race-treatment interactions in VF and VA loss are significant for the 2 main outcome measures; therefore, results of treatment sequence differences are presented by race. In black patients the average percent of eyes with VF loss was less in the ATT sequence than in the TAT sequence, a difference that is not statistically significant at any visit. In white patients, conversely, after 18 months the average percent of eyes with VF loss was less in the TAT sequence, a difference that increases and is statistically significant in years 8 to 10. In both black and white patients, the average percent of eyes with VA loss was less in the ATT sequence; this difference is statistically significant throughout 10 follow-up years in black patients and is statistically significant only for the first year in white patients. In both black and white patients, average IOP reductions were greater in the TAT sequence, though the TAT-ATT difference was substantially greater in white patients. In both black and white patients, first-intervention failure rates were substantially lower for trabeculectomy than for trabeculoplasty. Ten-year cumulative incidence of unilateral VF impairment comparable to legal blindness was modest in eyes of black (ATT 11.9%, TAT 18.5%) and white (ATT 9.9%, TAT 7.3%) patients. CONCLUSIONS Although IOP was lowered in both sequences in black and white patients with medically uncontrolled glaucoma, long-term visual function outcomes were better for the ATT sequence in black patients and better for the TAT sequence in white patients.
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Research Support, U.S. Gov't, P.H.S. |
21 |
123 |
11
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Wooley SC, Blackwell B, Winget C. A learning theory model of chronic illness behavior: theory, treatment, and research. Psychosom Med 1978; 40:379-401. [PMID: 715141 DOI: 10.1097/00006842-197808000-00003] [Citation(s) in RCA: 105] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Over 300 patients have been treated on an inpatient psychosomatic service employing a learning model of chronic illness behavior. This model stresses social reinforcement and avoidance of occupational and social activities in the development of a syndrome characterized by somatic complaints and care-eliciting interpersonal behaviors. Preliminary studies showed that patients reinforced others for care-giving responses but showed improved tolerance of experimental pain and lower rates of drug use when care-taking responses were minimized and self-control encouraged. Treatment was designed to involve the patient in his own care, including behavior modification techniques to reduce symptomatology, social skills training, and family therapy. One-year follow-up shows that most patients achieve self-set goals, with generalization of beneficial treatment effects. Patients who return to an intact family show continuing decreases in somatic complaints and increases in achievement orientation. Treatment failures are characterized by lack of an intact family and return to the medical care system.
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47 |
105 |
12
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Sun JM, Song AW, Case LE, Mikati MA, Gustafson KE, Simmons R, Goldstein R, Petry J, McLaughlin C, Waters-Pick B, Chen LW, Wease S, Blackwell B, Worley G, Troy J, Kurtzberg J. Effect of Autologous Cord Blood Infusion on Motor Function and Brain Connectivity in Young Children with Cerebral Palsy: A Randomized, Placebo-Controlled Trial. Stem Cells Transl Med 2017; 6:2071-2078. [PMID: 29080265 PMCID: PMC5702515 DOI: 10.1002/sctm.17-0102] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/25/2017] [Indexed: 12/23/2022] Open
Abstract
Cerebral palsy (CP) is a condition affecting young children that causes lifelong disabilities. Umbilical cord blood cells improve motor function in experimental systems via paracrine signaling. After demonstrating safety, we conducted a phase II trial of autologous cord blood (ACB) infusion in children with CP to test whether ACB could improve function (ClinicalTrials.gov, NCT01147653; IND 14360). In this double-blind, placebo-controlled, crossover study of a single intravenous infusion of 1-5 × 107 total nucleated cells per kilogram of ACB, children ages 1 to 6 years with CP were randomly assigned to receive ACB or placebo at baseline, followed by the alternate infusion 1 year later. Motor function and magnetic resonance imaging brain connectivity studies were performed at baseline, 1, and 2 years post-treatment. The primary endpoint was change in motor function 1 year after baseline infusion. Additional analyses were performed at 2 years. Sixty-three children (median age 2.1 years) were randomized to treatment (n = 32) or placebo (n = 31) at baseline. Although there was no difference in mean change in Gross Motor Function Measure-66 (GMFM-66) scores at 1 year between placebo and treated groups, a dosing effect was identified. In an analysis 1 year post-ACB treatment, those who received doses ≥2 × 107 /kg demonstrated significantly greater increases in GMFM-66 scores above those predicted by age and severity, as well as in Peabody Developmental Motor Scales-2 Gross Motor Quotient scores and normalized brain connectivity. Results of this study suggest that appropriately dosed ACB infusion improves brain connectivity and gross motor function in young children with CP. Stem Cells Translational Medicine 2017;6:2071-2078.
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Research Support, Non-U.S. Gov't |
8 |
102 |
13
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Clinical Trial |
53 |
98 |
14
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Horwitz ME, Wease S, Blackwell B, Valcarcel D, Frassoni F, Boelens JJ, Nierkens S, Jagasia M, Wagner JE, Kuball J, Koh LP, Majhail NS, Stiff PJ, Hanna R, Hwang WYK, Kurtzberg J, Cilloni D, Freedman LS, Montesinos P, Sanz G. Phase I/II Study of Stem-Cell Transplantation Using a Single Cord Blood Unit Expanded Ex Vivo With Nicotinamide. J Clin Oncol 2018; 37:367-374. [PMID: 30523748 PMCID: PMC6368416 DOI: 10.1200/jco.18.00053] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Increasing the number of hematopoietic stem and progenitor cells within an umbilical cord blood (UCB) graft shortens the time to hematopoietic recovery after UCB transplantation. In this study, we assessed the safety and efficacy of a UCB graft that was expanded ex vivo in the presence of nicotinamide and transplanted after myeloablative conditioning as a stand-alone hematopoietic stem-cell graft. METHODS Thirty-six patients with hematologic malignancies underwent transplantation at 11 sites. RESULTS The cumulative incidence of neutrophil engraftment at day 42 was 94%. Two patients experienced secondary graft failure attributable to viral infections. Hematopoietic recovery was compared with that observed in recipients of standard UCB transplantation as reported to the Center for International Blood and Marrow Transplant Research (n = 146). The median time to neutrophil recovery was 11.5 days (95% CI, 9 to 14 days) for recipients of nicotinamide-expanded UCB and 21 days (95% CI, 20 to 23 days) for the comparator ( P < .001). The median time to platelet recovery was 34 days (95% CI, 32 to 42 days) and 46 days (95% CI, 42 to 50 days) for the expanded and the comparator cohorts, respectively ( P < .001). The cumulative incidence of grade 2 to 4 acute graft-versus-host disease (GVHD) at day 100 was 44%, and grade 3 and 4 acute GVHD at day 100 was 11%. The cumulative incidence at 2 years of all chronic GVHD was 40%, and moderate/severe chronic GVHD was 10%. The 2-year cumulative incidences of nonrelapse mortality and relapse were 24% and 33%, respectively. The 2-year probabilities of overall and disease-free survival were 51% and 43%, respectively. CONCLUSION UCB expanded ex vivo with nicotinamide shortens median neutrophil recovery by 9.5 days (95% CI, 7 to 12 days) and median platelet recovery by 12 days (95% CI, 3 to 16.5 days). This trial establishes feasibility, safety, and efficacy of an ex vivo expanded UCB unit as a stand-alone graft.
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Research Support, Non-U.S. Gov't |
7 |
97 |
15
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Watson RJ, Blackwell B. Purification and characterization of a common soil component which inhibits the polymerase chain reaction. Can J Microbiol 2000; 46:633-42. [PMID: 10932357 DOI: 10.1139/w00-043] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
DNA prepared from soil usually contains a brown-tinted inhibitor of the polymerase chain reaction (PCR) which limits the sensitivity of this technique for specific detection of microorganisms. To localize the inhibitor, soil fractions were tested for their inhibitory effect on the PCR reaction. A highly inhibitory activity, sufficient to account for the inhibition typically exhibited by soil DNA, was found to be tightly associated with the soil microorganism fraction. After cell breakage, the inhibitory material became soluble, and was not separable from DNA by standard purification procedures. A method was derived by which most of the inhibitory material could be selectively solubilized from the microorganism fraction without cell breakage, using successive washes with buffers differing in EDTA concentration. This technique was used to isolate a substance with characteristics suggesting that it is the major PCR inhibitor contaminating DNA purified from soil. It was found to be an organic, water-soluble compound of high molecular weight, and was present in a variety of soil types from different locations. It was found to be distinctly different in its solubility properties from humic and fulvic acids, and also in its FT-IR and NMR spectra. It forms a complex with protein and may inhibit the PCR reaction by an interaction with Taq DNA polymerase.
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25 |
88 |
16
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Blackwell B. Adverse effects of antidepressant drugs. Part 1: monoamine oxidase inhibitors and tricyclics. Drugs 1981; 21:201-19. [PMID: 6114849 DOI: 10.2165/00003495-198121030-00002] [Citation(s) in RCA: 82] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Review |
44 |
82 |
17
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Comparative Study |
57 |
82 |
18
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Abstract
Compliance is an ancient topic subjected to intense recent scrutiny as a result of scientific and social changes which focus on lifestyle adjustment to chronic illness and emphasize increasing patient involvement in self-care. Difficulties in definition, measurement and research design as well as the complexity of the problems contribute to conflicting findings and a lack of consensus about determinants of compliance. Five conceptual models have been studied but only a few positive and negative factors have been consistently identified, perhaps because outcome is often influenced by subtle attitudes, beliefs and quality of life considerations. Management involves both education and a variety of interventions that range from simple single strategies to complex multimodal approaches in which the patient's role may vary from being a passive participant of professional supervision to complete autonomy and self-care.
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Review |
33 |
59 |
19
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Wieser A, Debuyst R, Fattibene P, Meghzifene A, Onori S, Bayankin SN, Blackwell B, Brik A, Bugay A, Chumak V, Ciesielski B, Hoshi M, Imata H, Ivannikov A, Ivanov D, Junczewska M, Miyazawa C, Pass B, Penkowski M, Pivovarov S, Romanyukha A, Romanyukha L, Schauer D, Scherbina O, Schultka K, Shames A, Sholom S, Skinner A, Skvortsov V, Stepanenko V, Tielewuhan E, Toyoda S, Trompier F. The 3rd international intercomparison on EPR tooth dosimetry: Part 1, general analysis. Appl Radiat Isot 2005; 62:163-71. [PMID: 15607443 DOI: 10.1016/j.apradiso.2004.08.027] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The objective of the 3rd International Intercomparison on Electron Paramagnetic Resonance (EPR) Tooth Dosimetry was the evaluation of laboratories performing tooth enamel dosimetry below 300 mGy. Participants had to reconstruct the absorbed dose in tooth enamel from 11 molars, which were cut into two halves. One half of each tooth was irradiated in a 60Co beam to doses in the ranges of 30-100 mGy (5 samples), 100-300 mGy (5 samples), and 300-900 mGy (1 sample). Fourteen international laboratories participated in this intercomparison programme. A first analysis of the results and an overview of the essential features of methods applied in different laboratories are presented. The relative standard deviation of results of all methods was better than 27% for applied doses in the range of 79-704 mGy. In the analysis of the unirradiated tooth halves 8% of the samples were identified as outliers with additional absorbed dose above background dose.
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Validation Study |
20 |
47 |
20
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Blackwell B, Stefopoulos A, Enders P, Kuzma R, Adolphe A. Anticholinergic activity of two tricyclic antidepressants. Am J Psychiatry 1978; 135:722-4. [PMID: 655282 DOI: 10.1176/ajp.135.6.722] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Using a double-blind crossover Latin square design, the authors evaluated the peripheral anticholinergic and central nervous system effects of three dose levels of two tricyclic antidepressants in female volunteers. Results showed that 5 hours after drug administration, desipramine (50 and 100 mg) caused significantly less reduction in salivation than did amitriptyline. Amitriptyline produced more sedation (Clyde Mood Scale) and a greater number of subjective complaints than did desipramine. These results are consistent with anticholinergic profiles from animal experiments and suggest that clinically meaningful differences may exist among tricyclic antidepressants.
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Clinical Trial |
47 |
44 |
21
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Blackwell B, Bloomfield S, Gartside P, Robinson A, Hanenson I, Magenheim H, Nidich S, Zigler R. Transcendental meditation in hypertension. Individual response patterns. Lancet 1976; 1:223-6. [PMID: 55533 DOI: 10.1016/s0140-6736(76)91341-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Seven selected hypertensive patients were stabilized on drugs at a research clinic. Subjects learned transcendental meditation (T.M.), were seen weekly, and took their own blood pressure several times daily. After 12 weeks of T.M. six subjects showed psychological changes and reduced anxiety scores. Six subjects also showed significant reductions in home and four in clinic blood-pressures. Six months later four subjects continued to derive psychological benefit and two showed significant blood-pressure reductions attributable to T.M. at home and clinic.
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49 |
42 |
22
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Harris LJ, Alexander NJ, Saparno A, Blackwell B, McCormick SP, Desjardins AE, Robert LS, Tinker N, Hattori J, Piché C, Schernthaner JP, Watson R, Ouellet T. A novel gene cluster in Fusarium graminearum contains a gene that contributes to butenolide synthesis. Fungal Genet Biol 2007; 44:293-306. [PMID: 17175185 DOI: 10.1016/j.fgb.2006.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2006] [Revised: 10/02/2006] [Accepted: 11/02/2006] [Indexed: 11/17/2022]
Abstract
The development of expressed sequence tag (EST) databases, directed transformation and a sequenced genome has facilitated the functional analysis of Fusarium graminearum genes. Extensive analysis of 10,397 ESTs, derived from thirteen cDNA libraries of F. graminearum grown under diverse conditions, identified a novel cluster of eight genes (gene loci fg08077-fg08084) located within a 17kb region of genomic sequence contig 1.324. The expression of these genes is concomitantly up-regulated under growth conditions that promote mycotoxin production. Gene disruption and add-back experiments followed by metabolite analysis of the transformants indicated that one of the genes, fg08079, is involved in butenolide synthesis. The mycotoxin butenolide is produced by several Fusarium species and has been suggested, but not proven, to be associated with tall fescue toxicoses in grazing cattle. This is the first report of the identification of a gene involved in the biosynthetic pathway of butenolide.
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18 |
42 |
23
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Lehmann H, Blackwell B, O'Connor DC, Liddell J, Daws AV. Two Further Serum Pseudocholinesterase Phenotypes as Causes of Suxamethonium Apnoea. BRITISH MEDICAL JOURNAL 2011; 1:1116-8. [PMID: 20789768 DOI: 10.1136/bmj.1.5338.1116] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Journal Article |
14 |
34 |
24
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48 |
32 |
25
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Kim J, Dally LG, Ederer F, Gaasterland DE, VanVeldhuisen PC, Blackwell B, Sullivan EK, Prum B, Shafranov G, Beck A, Spaeth GL. The Advanced Glaucoma Intervention Study (AGIS): 14. Distinguishing progression of glaucoma from visual field fluctuations. Ophthalmology 2004; 111:2109-16. [PMID: 15522379 DOI: 10.1016/j.ophtha.2004.06.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2004] [Accepted: 06/23/2004] [Indexed: 11/19/2022] Open
Abstract
PURPOSE To determine the least worsening of a visual field (VF) and the least number of confirming tests needed to identify progression of glaucomatous VF defects. DESIGN Cohort study of participants in a clinical trial. PARTICIPANTS Seven hundred fifty-two eyes of 565 patients with advanced glaucoma. METHODS Visual field tests were quantified with the Advanced Glaucoma Intervention Study (AGIS) VF defect score and the Humphrey Field Analyzer mean deviation (MD). Follow-up was 8 to 13 years. MAIN OUTCOME MEASURES Two measures based on the AGIS VF defect score: (1) sustained decrease of VF (SDVF), a worsening from baseline by 2 (alternatively, 3 or 4) or more units and sustained for 2 (alternatively, 3) consecutive 6-month visits and (2) after the occurrence of SDVF, the average percent of eyes with worsening by 2 (alternatively, 3 or 4) or more units from baseline. Two similar measures based on MD. RESULTS Based on the original AGIS criteria for SDVF (a worsening of 4 units in the AGIS score sustained during 3 consecutive 6-month visits), 31% of eyes had an SDVF. The percent of eyes with a sustained event increases by approximately 10% when either the minimum number of units of field loss or the minimum number of 6-month visits during which the loss is sustained decreases by 1. During 3 years of follow-up after a sustained event, a worsening of at least 2 units was found in 72% of eyes that had a 2-visit sustained event. The same worsening was found in 84% of eyes that had a 3-visit sustained event. Through the next 10 years after a sustained event, based on worsening of 2, 3, or 4 units at 2 or 3 consecutive tests, the loss reoccurred, on average, in >/=75% of study eyes. Results for MD are similar. CONCLUSIONS In patients with advanced glaucoma, a single confirmatory test 6 months after a VF worsening indicates with at least 72% probability a persistent defect when the worsening is defined by at least 2 units of AGIS score or by at least 2 decibels of MD. When the number of confirmatory tests is increased from 1 to 2, the percentage of eyes that show a persistent defect increases from 72% to 84%.
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Research Support, U.S. Gov't, P.H.S. |
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