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Balke B, Hogardt M, Schmoldt S, Hoy L, Weissbrodt H, Häussler S. Evaluation of the E test for the assessment of synergy of antibiotic combinations against multiresistant Pseudomonas aeruginosa isolates from cystic fibrosis patients. Eur J Clin Microbiol Infect Dis 2007; 25:25-30. [PMID: 16402226 DOI: 10.1007/s10096-005-0076-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The determination of synergistic effects of antimicrobial drug combinations can lead to improved therapeutic options in the antibiotic treatment of cystic fibrosis patients who are chronically infected with multiresistant Pseudomonas aeruginosa isolates. The aim of this study was to evaluate the performance of the E test versus the standard agar dilution checkerboard susceptibility test in the assessment of synergy and, in addition, to determine the activity of two antimicrobial combinations against 163 multiresistant P. aeruginosa isolates from cystic fibrosis patients. The agreement between the checkerboard method and the E test was excellent (>90%) for nonmucoid as well as mucoid isolates from cystic fibrosis patients. The rate of synergy was higher for the antibiotic combination of ceftazidime and tobramycin (28.8% of the cystic fibrosis strains) than for the combination of meropenem and tobramycin (19.0%). However, the probability of synergy for the second antibiotic combination increased significantly when the synergy of the first antibiotic combination had already been demonstrated (Fischer's exact test, p=0.049). The results show that the E test is a valuable and practical method for routine microbiological diagnostics and can aid in the selection of improved antibiotic options in the treatment of cystic fibrosis patients chronically infected with P. aeruginosa.
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Felser C, Fecher G, Balke B. Spintronik: eine Herausforderung für Materialwissenschaften und Festkörperchemie. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200601815] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Felser C, Fecher GH, Balke B. Spintronics: A Challenge for Materials Science and Solid-State Chemistry. Angew Chem Int Ed Engl 2007; 46:668-99. [PMID: 17219604 DOI: 10.1002/anie.200601815] [Citation(s) in RCA: 199] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Spintronics is a multidisciplinary field involving physics, chemistry, and engineering, and is a new research area for solid-state scientists. A variety of new materials must be found to satisfy different demands. The search for ferromagnetic semiconductors and stable half-metallic ferromagnets with Curie temperatures higher than room temperature remains a priority for solid-state chemistry. A general understanding of structure-property relationships is a necessary prerequisite for the design of new materials. In this Review, the most important developments in the field of spintronics are described from the point of view of materials science.
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Balke B, Hoy L, Weissbrodt H, Häussler S. Comparison of the Micronaut Merlin automated broth microtiter system with the standard agar dilution method for antimicrobial susceptibility testing of mucoid and nonmucoid Pseudomonas aeruginosa isolates from cystic fibrosis patients. Eur J Clin Microbiol Infect Dis 2005; 23:765-71. [PMID: 15605183 DOI: 10.1007/s10096-004-1212-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The aim of this study was to compare a commercially available automated broth microdilution system (Merlin; Micronaut, Germany) with the standard agar dilution method for susceptibility testing of pulmonary isolates from cystic fibrosis patients. Accurate susceptibility testing of bacterial isolates from cystic fibrosis patients is known to pose problems. Although commercially available automated test systems could facilitate susceptibility testing of such isolates in routine diagnostics, these systems have not been recommended thus far. However, a pilot study recently indicated that the Merlin system, which is based on an endpoint measurement rather than on growth curves, might be applicable in the susceptibility testing of isolates from cystic fibrosis patients. In the present study, the Merlin system was further evaluated using an extended panel of nonmucoid and mucoid Pseudomonas aeruginosa isolates. The results showed that the MICs obtained with the Merlin system tended to be lower than those obtained with the agar dilution method, a finding that became increasingly apparent when mucoid Pseudomonas aeruginosa strains were tested. The correlation coefficients (r values) of the MIC results for all strains tested were between 0.6 and 0.8 for five of the seven antimicrobial agents, with r values exceeding 0.8 for only meropenem and ciprofloxacin. However, since the overall rate of serious discrepancies was within an acceptable range, the Merlin system appears to be applicable for routine clinical use in susceptibility testing of P. aeruginosa isolates from cystic fibrosis patients.
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Balke B, Cox L, Fackler O, Mugge M, Souers PC, Tsugawa RT, White RM. Limits on neutron emission from "cold fusion" in metal hydrides. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1990; 42:30-37. [PMID: 9966688 DOI: 10.1103/physrevc.42.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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31
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Schaffer NE, Beehler B, Jeyendran RS, Balke B. Methods of semen collection in an ambulatory greater one-horned rhinoceros (rhinoceros unicornis). Zoo Biol 1990. [DOI: 10.1002/zoo.1430090304] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Balke B, Gidal G, Jodidio A, Shinsky KA, Steiner HM, Stoker DP, Strovink M, Tripp RD, Carr J, Gobbi B, Oram CJ. Precise measurement of the asymmetry parameter delta in muon decay. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1988; 37:587-617. [PMID: 9958721 DOI: 10.1103/physrevd.37.587] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Jodidio A, Balke B, Carr J, Gidal G, Shinsky KA, Steiner HM, Stoker DP, Strovink M, Tripp RD, Gobbi B, Oram CJ. Erratum: Search for right-handed currents in muon decay. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1988; 37:237-238. [PMID: 9958543 DOI: 10.1103/physrevd.37.237] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Jodidio A, Balke B, Carr J, Gidal G, Shinsky KA, Steiner HM, Stoker DP, Strovink M, Tripp RD, Gobbi B, Oram CJ. Search for right-handed currents in muon decay. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1986; 34:1967-1990. [PMID: 9957378 DOI: 10.1103/physrevd.34.1967] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bassett DR, Giese MD, Nagle FJ, Ward A, Raab DM, Balke B. Aerobic requirements of overground versus treadmill running. Med Sci Sports Exerc 1985; 17:477-81. [PMID: 4033405 DOI: 10.1249/00005768-198508000-00013] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
There is general agreement that the oxygen demand of level running is similar for both the treadmill (TM) and overground situations at speeds under 260 m X min-1. However, controversy exists with regard to inclined running. The prevailing view, represented by the ACSM prediction formulas, is that overground hill running is theoretically more costly than inclined treadmill running. This study was designed to investigate the problem from an empirical standpoint. Seven male subjects performed overground and TM running at two grades (0 and 5.7%) over a range of speeds between 136-286 m X min-1. For the outdoor trials, subjects covered a distance of 950 m at a constant pace, and expired gas was collected over the last 150 m. Matching trials were then performed on the treadmill at the same speed and % grade. Regression lines were calculated for speed vs oxygen consumption (VO2). For TM and overground level running, these were: VO2 (ml.kg-1.min-1)= 0.222 X speed (m.min-1) - 1.33 and VO2 (ml.kg-1.min-1) = 0.202 X speed (m.min-1) + 3.21 respectively. The regression lines from TM and overground inclined running were: VO2 (ml.kg-1.min-1) = 0.237 X speed (m.min-1) + 7.53. and VO2 (ml.kg-1.min-1) = 0.233 X speed (m.min-1) + 7.78 respectively. A 2 X 3 X 2 ANOVA revealed that the differences between mean values for VO2 for level TM running vs level overground running and grade TM running vs grade overground running were not statistically significant (0.10 less than P less than 0.25).(ABSTRACT TRUNCATED AT 250 WORDS)
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Stoker DP, Balke B, Carr J, Gidal G, Jodidio A, Shinsky KA, Steiner HM, Strovink M, Tripp RD, Gobbi B, Oram CJ. Search for right-handed currents by means of muon-spin rotation. PHYSICAL REVIEW LETTERS 1985; 54:1887-1890. [PMID: 10031167 DOI: 10.1103/physrevlett.54.1887] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Lindgärde F, Malmquist J, Balke B. Physical fitness, insulin secretion, and glucose tolerance in healthy males and mild type-2 diabetes. ACTA DIABETOLOGICA LATINA 1983; 20:33-40. [PMID: 6344526 DOI: 10.1007/bf02629127] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The nature of the relation between physical fitness and glucose homeostasis was evaluated in two studies: (A) a cross-sectional study on 108 middle-aged non-diabetic men; (B) a five-month training program involving nine males with non-insulin-dependent (type 2) diabetes. It was found that the level of physical fitness was positively related to glucose tolerance, and that this relation was largely independent of body weight and basal insulin secretion. Furthermore, the training program for the diabetics resulted in improved glucose tolerance without change in either body weight or glucose-induced insulin secretion. It is concluded that glucose balance is significantly influenced by the physical fitness level, which is likely to be an important element in the pathogenesis of type 2 diabetes as well as in the treatment of that disease.
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McBeath AA, Bahrke MS, Balke B. Walking efficiency before and after total hip replacement as determined by oxygen consumption. J Bone Joint Surg Am 1980; 62:807-10. [PMID: 7391104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Seventy-seven patients receiving either unilateral or bilateral total hip replacement were studied before and for as long as four years after operation. Their walking velocity and efficiency (the latter determined by measuring oxygen consumption) improved after operation. Total hip replacement allowed relatively equal postoperative efficiency and velocity for patients with unilateral and bilateral disease. While no consistent relationships were found between the components of the Iowa hip-rating scale, significant correlations were found between the composite Iowa hip-rating score and oxygen consumption. Data indicate that measurement of self-selected velocity in patients with hip disease is a satisfactory indicator of walking efficiency.
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Oldridge NB, Nagle FJ, Balke B, Corliss RJ, Kahn DR. Aortocoronary bypass surgery: effects of surgery and 32 months of physical conditioning on treadmill performance. Arch Phys Med Rehabil 1978; 59:268-75. [PMID: 307374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Morgan WP, Hirta K, Weitz GA, Balke B. Hypnotic perturbation of perceived exertion: ventilatory consequences. AMERICAN JOURNAL OF CLINICAL HYPNOSIS 1976; 18:182-90. [PMID: 1246972 DOI: 10.1080/00029157.1976.10403796] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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41
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McBeath AA, Bahrke M, Balke B. Efficiency of assisted ambulation determined by oxygen consumption measurement. J Bone Joint Surg Am 1974; 56:994-1000. [PMID: 4847243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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42
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Nagle F, Balke B, Baptista G, Alleyia J, Howley E. Compatibility of progressive treadmill, bicycle and step tests based on oxygen uptake responses. MEDICINE AND SCIENCE IN SPORTS 1971; 3:149-54. [PMID: 5173384 DOI: 10.1249/00005768-197100310-00077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Faulkner JA, Kollias J, Favour CB, Buskirk ER, Balke B. Maximum aerobic capacity and running performance at altitude. J Appl Physiol (1985) 1968; 24:685-91. [PMID: 5647647 DOI: 10.1152/jappl.1968.24.5.685] [Citation(s) in RCA: 47] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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44
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Faulkner JA, Daniels JT, Balke B. Effects of training at moderate altitude on physical performance capacity. J Appl Physiol (1985) 1967; 23:85-9. [PMID: 6028166 DOI: 10.1152/jappl.1967.23.1.85] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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45
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Ryan AJ, Stoedefalke K, Balke B. The Wisconsin program in adaptive physical education. JOURNAL OF THE AMERICAN COLLEGE HEALTH ASSOCIATION 1967; 15:351-6. [PMID: 4227404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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46
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Dempsey JA, Reddan W, Rankin J, Balke B. Alveolar-arterial gas exchange during muscular work in obesity. J Appl Physiol (1985) 1966; 21:1807-14. [PMID: 5929306 DOI: 10.1152/jappl.1966.21.6.1807] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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47
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Dempsey JA, Reddan W, Balke B, Rankin J. Work capacity determinants and physiologic cost of weight-supported work in obesity. J Appl Physiol (1985) 1966; 21:1815-20. [PMID: 5929307 DOI: 10.1152/jappl.1966.21.6.1815] [Citation(s) in RCA: 87] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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48
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Truett JT, Benson H, Balke B. On the practicability of submaximal exercise testing. JOURNAL OF CHRONIC DISEASES 1966; 19:711-5. [PMID: 5966015 DOI: 10.1016/0021-9681(66)90069-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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49
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Balke B, Melton CE, Blake C. Physiological stress and fatigue in aerial missions for the control of forest fires. AEROSPACE MEDICINE 1966; 37:221-7. [PMID: 5907755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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50
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Nagle FJ, Naughton J, Balke B. Comparisons of direct and indirect blood pressure with pressure-flow dynamics during exercise. J Appl Physiol (1985) 1966; 21:317-20. [PMID: 5903935 DOI: 10.1152/jappl.1966.21.1.317] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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