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Hoffmann K, Voigt K. Absidia parricida plays a dominant role in biotrophic fusion parasitism among mucoralean fungi (Zygomycetes): Lentamyces, a new genus for A. parricida and A. zychae. PLANT BIOLOGY (STUTTGART, GERMANY) 2009; 11:537-554. [PMID: 19538392 DOI: 10.1111/j.1438-8677.2008.00145.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Within the order Mucorales (Zygomycetes), the facultative parasites Parasitella parasitica, Chaetocladium brefeldii, Chaetocladium jonesii and Absidia parricida are known to initiate biotrophic fusion parasitic interactions on a wide variety of other mucoralean hosts. Their phylogenetic relationship within the Mucorales and their ability to form parasitic structures with several known host species was examined. Together with interspecific reactions between the mycoparasites, this study found: (i) no evident differences in the spectrum of non-parasitic hosts tested within the study; (ii) A. parricida parasitises all other fusion parasites; (iii) A. parricida is ancestral to all other parasites; (iv) A. parricida is reported for the first time as phylogenetically basal to all other mucoralean fungi except the Umbelopsidaceae and (v) based on phylogenetic analyses and physiological and morphological characteristics, the slow-growing species A. parricida and Absidia zychae are removed from the genus Absidia and reclassified in the newly described genus Lentamyces.
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Jain A, Kuhls-Gilcrist A, Patel V, Hoffmann K, Bednarek D, Rudin S. SU-FF-I-108: Effect of Point Spread Function, X-Ray Quantum Noise, and Additive Instrumentation Noise On the Accuracy of the Angulated Slit Method for Determination of Pre-Sampled Detector MTF. Med Phys 2009. [DOI: 10.1118/1.3181229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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103
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Schafer S, Noel P, Walczak A, Kuhls-Gilcrist A, Hoffmann K. MO-D-304A-06: Filtered Region-Of-Interest Cone-Beam CT From Rotational Angiography for Image-Guided Interventions: Evaluation of Dose Reduction and Image Quality. Med Phys 2009. [DOI: 10.1118/1.3182235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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104
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Kuan S, Hoffmann K, Tisdall P. Ultrasonographic and surgical findings of a gastric hyperplastic polyp resulting in pyloric obstruction in an 11-week-old French Bulldog. Aust Vet J 2009; 87:253-5. [DOI: 10.1111/j.1751-0813.2009.00433.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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105
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Schmitt J, Bakhtiari M, Malhotra H, Hoffmann K, Nazareth D. SU-FF-J-28: A Guidance System for Optical Patient Alignment During Breast Radiotherapy. Med Phys 2009. [DOI: 10.1118/1.3181320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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106
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Wang W, Keleshis C, Kuhls-Gilcrist A, Ionita C, Bednarek D, Hoffmann K, Rudin S. SU-FF-I-170: Control, Acquisition, Processing, and Image Display System (CAPIDS) for the Solid-State X-Ray Image Intensifier (SSXII). Med Phys 2009. [DOI: 10.1118/1.3181291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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107
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Müller CJ, Gröticke I, Hoffmann K, Schughart K, Löscher W. Differences in sensitivity to the convulsant pilocarpine in substrains and sublines of C57BL/6 mice. GENES BRAIN AND BEHAVIOR 2009; 8:481-92. [PMID: 19493016 DOI: 10.1111/j.1601-183x.2009.00490.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In rodents, the cholinomimetic convulsant pilocarpine is widely used to induce status epilepticus (SE), followed by hippocampal damage and spontaneous recurrent seizures, resembling temporal lobe epilepsy. This model has initially been described in rats, but is increasingly used in mice, including the C57BL/6 (B6) inbred strain. In the present study, we compared the effects of pilocarpine in three B6 substrains (B6JOla, B6NHsd and B6NCrl) that were previously reported to differ in several behavioral and genetic aspects. In B6JOla and B6NHsd, only a small percentage of mice developed SE independently of whether pilocarpine was administered at high bolus doses or with a ramping up dosing protocol, but mortality was high. The reverse was true in B6NCrl, in which a high percentage of mice developed SE, but mortality was much lower compared to the other substrains. However, in subsequent experiments with B6NCrl mice, striking differences in SE induction and mortality were found in sublines of this substrain coming from different barrier rooms of the same vendor. In B6NCrl from Barrier #8, administration of pilocarpine resulted in a high percentage of mice developing SE, but mortality was low, whereas the opposite was found in B6NCrl mice from four other barriers of the same vendor. The analysis of F1 mice from a cross of female Barrier 8 pilocarpine-susceptible mice with resistant male mice from another barrier (#9) revealed that F1 male mice were significantly more sensitive to pilocarpine than the resistant parental male mice whereas female F1 mice were not significantly different from resistant Barrier 9 females. These observations strongly indicate X-chromosome linked genetic variation as the cause of the observed phenotypic alterations. To our knowledge, this is the first report which demonstrates that not only the specific B6 substrain but also sublines derived from the same substrain may markedly differ in their response to convulsants such as pilocarpine. As the described differences have a genetic basis, they offer a unique opportunity to identify the genes and pathways involved and contribute to a better understanding of the underlying molecular mechanisms of seizure susceptibility.
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108
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Hoffmann K, Feldmeier C, Beenisch J, Kuntz R, Schuck M. Die enterale Ernährung in der postoperativen Phase. Transfus Med Hemother 2009. [DOI: 10.1159/000219755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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109
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Korb J, Weil T, Hoffmann K, Foster KR, Rehli M. A Gene Necessary for Reproductive Suppression in Termites. Science 2009; 324:758. [DOI: 10.1126/science.1170660] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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110
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Schindelmeiser J, Kutzner M, Bergmann M, Aumüller G, Heck H, Hoffmann K. Influence of Long and Short Photoperiods on the Morphology and Androgen Receptor Levels of the Epididymis and the Ductus Deferens of Phodopus sungorus/Einfluß langer und kurzer Photoperioden auf die Morphologie und den Androgen-Rezeptor-Gehalt des Nebenho. Andrologia 2009. [DOI: 10.1111/j.1439-0272.1988.tb03134.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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111
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Schindelmeiser J, Rudolf T, Hoffmann K. Immunohistochemical Localization of Neuropeptide Y in Nerves of the Male Genital Tract of the Photoperiodically Responsive Djungarian Hamster, Phodopus Sungoras/Immunhistochemische Lokalisation von Neuropeptid Y in Nerven der männlichen Genitalorgane des. Andrologia 2009. [DOI: 10.1111/j.1439-0272.1989.tb02469.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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112
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Pischon T, Boeing H, Hoffmann K. General and Abdominal Adiposity and Risk of Death in Europe. J Vasc Surg 2009. [DOI: 10.1016/j.jvs.2009.01.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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113
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Nikendei C, Andreesen S, Hoffmann K, Junger J. Cross-year peer tutoring on internal medicine wards: effects on self-assessed clinical competencies--a group control design study. MEDICAL TEACHER 2009; 31:e32-5. [PMID: 19330661 DOI: 10.1080/01421590802464452] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
BACKGROUND Peer-assisted learning (PAL) has become a well-accepted teaching method within medical education. However, descriptions of on-ward PAL programmes are rare. We introduced a PAL programme with a focus on clinical competencies on internal medicine wards. AIMS To assess the effects of an on-ward PAL programme on self-assessed clinical competencies. METHOD A total of 168 medical students were randomly assigned to one of the seven intervention wards or one of the seven control wards. During their 5-week ward-placement, the intervention group (IG; n = 88) received 10 patient-centred tutorials lead by final year tutors: (I) history taking, (II) physical examination, (III) blood withdrawal, (IV) infusion, (V) patient files, (VI and VII) ECG, (VIII-X) chart rounds. The control group (CG; n = 80) did not take part in the PAL programme. Clinical competencies were self-assessed pre- and post-intervention. RESULTS For five of the ten assessed clinical competencies, increases in self-confidence ratings were significantly higher in the IG as compared to CG. CONCLUSIONS RESULTS provide preliminary evidence to suggest that PAL programmes on internal medicine wards and with final year students as peer tutors may represent a valuable additional tool within medical clerkships. However, the findings must be confirmed and clarified in further research.
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114
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Hoffmann K, Schmidt J. Neue chirurgische Ansätze beim hepatozellulären Karzinom. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2009; 47:61-7. [DOI: 10.1055/s-0028-1109097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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115
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Hoffmann K, Glimm H, Radeleff B, Richter G, Heining C, Schenkel I, Zahlten-Hinguranage A, Schirrmacher P, Schmidt J, Büchler MW, Jaeger D, von Kalle C, Schemmer P. Prospective, randomized, double-blind, multi-center, Phase III clinical study on transarterial chemoembolization (TACE) combined with Sorafenib versus TACE plus placebo in patients with hepatocellular cancer before liver transplantation - HeiLivCa [ISRCTN24081794]. BMC Cancer 2008; 8:349. [PMID: 19036146 PMCID: PMC2630329 DOI: 10.1186/1471-2407-8-349] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Accepted: 11/26/2008] [Indexed: 01/01/2023] Open
Abstract
Background Disease progression of hepatocellular cancer (HCC) in patients eligible for liver transplantation (LTx) occurs in up to 50% of patients, resulting in withdrawal from the LTx waiting list. Transarterial chemoembolization (TACE) is used as bridging therapy with highly variable response rates. The oral multikinase inhibitor sorafenib significantly increases overall survival and time-to-progression in patients with advanced hepatocellular cancer. Design The HeiLivCa study is a double-blinded, controlled, prospective, randomized multi-centre phase III trial. Patients in study arm A will be treated with transarterial chemoembolization plus sorafenib 400 mg bid. Patients in study arm B will be treated with transarterial chemoembolization plus placebo. A total of 208 patients with histologically confirmed hepatocellular carcinoma or HCC diagnosed according to EASL criteria will be enrolled. An interim patients' analysis will be performed after 60 events. Evaluation of time-to-progression as primary endpoint (TTP) will be performed at 120 events. Secondary endpoints are number of patients reaching LTx, disease control rates, OS, progression free survival, quality of live, toxicity and safety. Discussion As TACE is the most widely used primary treatment of HCC before LTx and sorafenib is the only proven effective systemic treatment for advanced HCC there is a strong rational to combine both treatment modalities. This study is designed to reveal potential superiority of the combined TACE plus sorafenib treatment over TACE alone and explore a new neo-adjuvant treatment concept in HCC before LTx.
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116
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Hoffmann K, Glimm H, Radeleff B, Richter G, Heining C, Schenkel I, Zahlten-Hinguranage A, Schirrmacher P, Schmidt J, Büchler MW, Jaeger D, von Kalle C, Schemmer P. Prospective, randomized, double-blind, multi-center, Phase III clinical study on transarterial chemoembolization (TACE) combined with Sorafenib versus TACE plus placebo in patients with hepatocellular cancer before liver transplantation - HeiLivCa [ISRCTN24081794]. BMC Cancer 2008. [PMID: 19036146 DOI: 10.1186/1471-2407-8-3491471-2407-8-349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Disease progression of hepatocellular cancer (HCC) in patients eligible for liver transplantation (LTx) occurs in up to 50% of patients, resulting in withdrawal from the LTx waiting list. Transarterial chemoembolization (TACE) is used as bridging therapy with highly variable response rates. The oral multikinase inhibitor sorafenib significantly increases overall survival and time-to-progression in patients with advanced hepatocellular cancer. DESIGN The HeiLivCa study is a double-blinded, controlled, prospective, randomized multi-centre phase III trial. Patients in study arm A will be treated with transarterial chemoembolization plus sorafenib 400 mg bid. Patients in study arm B will be treated with transarterial chemoembolization plus placebo. A total of 208 patients with histologically confirmed hepatocellular carcinoma or HCC diagnosed according to EASL criteria will be enrolled. An interim patients' analysis will be performed after 60 events. Evaluation of time-to-progression as primary endpoint (TTP) will be performed at 120 events. Secondary endpoints are number of patients reaching LTx, disease control rates, OS, progression free survival, quality of live, toxicity and safety. DISCUSSION As TACE is the most widely used primary treatment of HCC before LTx and sorafenib is the only proven effective systemic treatment for advanced HCC there is a strong rational to combine both treatment modalities. This study is designed to reveal potential superiority of the combined TACE plus sorafenib treatment over TACE alone and explore a new neo-adjuvant treatment concept in HCC before LTx.
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117
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Murphy BF, Hoffmann K, Belolipetski A, Keto J, Ditmire T. Explosion of xenon clusters driven by intense femtosecond pulses of extreme ultraviolet light. PHYSICAL REVIEW LETTERS 2008; 101:203401. [PMID: 19113338 DOI: 10.1103/physrevlett.101.203401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Indexed: 05/27/2023]
Abstract
The explosions of large xenon clusters irradiated by intense, femtosecond extreme ultraviolet pulses at a wavelength of 38 nm have been studied. Using high harmonic generation from a 35 fs laser, clusters have been irradiated by extreme ultraviolet pulses at intensity approaching 10;{11} W/cm;{2}. Charge states up to Xe8+ are observed, states well above those produced by single atom illumination, indicating that plasma continuum lowering is important. Furthermore, the kinetic energy distribution of the exploding ions is consistent with a quasineutral hydrodynamic expansion, rather than a Coulomb explosion.
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118
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Pischon T, Boeing H, Hoffmann K, Bergmann M, Schulze MB, Overvad K, van der Schouw YT, Spencer E, Moons KGM, Tjønneland A, Halkjaer J, Jensen MK, Stegger J, Clavel-Chapelon F, Boutron-Ruault MC, Chajes V, Linseisen J, Kaaks R, Trichopoulou A, Trichopoulos D, Bamia C, Sieri S, Palli D, Tumino R, Vineis P, Panico S, Peeters PHM, May AM, Bueno-de-Mesquita HB, van Duijnhoven FJB, Hallmans G, Weinehall L, Manjer J, Hedblad B, Lund E, Agudo A, Arriola L, Barricarte A, Navarro C, Martinez C, Quirós JR, Key T, Bingham S, Khaw KT, Boffetta P, Jenab M, Ferrari P, Riboli E. General and abdominal adiposity and risk of death in Europe. N Engl J Med 2008; 359:2105-20. [PMID: 19005195 DOI: 10.1056/nejmoa0801891] [Citation(s) in RCA: 1413] [Impact Index Per Article: 88.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Previous studies have relied predominantly on the body-mass index (BMI, the weight in kilograms divided by the square of the height in meters) to assess the association of adiposity with the risk of death, but few have examined whether the distribution of body fat contributes to the prediction of death. METHODS We examined the association of BMI, waist circumference, and waist-to-hip ratio with the risk of death among 359,387 participants from nine countries in the European Prospective Investigation into Cancer and Nutrition (EPIC). We used a Cox regression analysis, with age as the time variable, and stratified the models according to study center and age at recruitment, with further adjustment for educational level, smoking status, alcohol consumption, physical activity, and height. RESULTS During a mean follow-up of 9.7 years, 14,723 participants died. The lowest risks of death related to BMI were observed at a BMI of 25.3 for men and 24.3 for women. After adjustment for BMI, waist circumference and waist-to-hip ratio were strongly associated with the risk of death. Relative risks among men and women in the highest quintile of waist circumference were 2.05 (95% confidence interval [CI], 1.80 to 2.33) and 1.78 (95% CI, 1.56 to 2.04), respectively, and in the highest quintile of waist-to-hip ratio, the relative risks were 1.68 (95% CI, 1.53 to 1.84) and 1.51 (95% CI, 1.37 to 1.66), respectively. BMI remained significantly associated with the risk of death in models that included waist circumference or waist-to-hip ratio (P<0.001). CONCLUSIONS These data suggest that both general adiposity and abdominal adiposity are associated with the risk of death and support the use of waist circumference or waist-to-hip ratio in addition to BMI in assessing the risk of death.
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119
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Glatzel H, Hoffmann K. Ernährungsphysiologische Brotvergleiche II. Nährstoffausnutzung und Darmflora. ANNALS OF NUTRITION AND METABOLISM 2008. [DOI: 10.1159/000174740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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120
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Bechara FG, Sand M, Rotterdam S, Altmeyer P, Hoffmann K. Multiple epidermal inclusion cysts after axillary liposuction-curettage: a rare complication of a frequent procedure. Int J Dermatol 2008; 47:1197-8. [PMID: 18986461 DOI: 10.1111/j.1365-4632.2008.03686.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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121
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Fliegerová K, Hoffmann K, Mrázek J, Voigt K. The design of oligonucleotide primers for the universal amplification of the N-acetylglucosaminidase gene (nag1) in Chytridiomycetes with emphasis on the anaerobic Neocallimastigales. Folia Microbiol (Praha) 2008; 53:209-13. [PMID: 18661293 DOI: 10.1007/s12223-008-0027-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 01/17/2008] [Indexed: 11/29/2022]
Abstract
The common feature of all chytridiomycetous fungi, aerobic as well as anaerobic, is an abundance of chitin in their cell wall. The genes coding for chitinases have therefore been widely used as phylogenetic markers in ascomycetes. As their utility for Chytridiomycetes has not been determined we chose the gene encoding an enzyme involved in chitin degradation and energy metabolism, the beta-(1,4)-N-acetylglucosaminidase (nag1). Primer pair Nag-forward and Nag-reverse was used to create PCR product from 5 strains of anaerobic and 7 strains of aerobic chytrids. However, Blast search of sequenced amplicons showed that these primers are specific only for fungus Emericella nidulans. Amino acid alignment of Nag1 proteins of fungal, protozoal and bacterial origin available in GenBank database was therefore performed. Five amino acid regions were found to be conserved enough to serve as a suitable domain for the design of a set of primers for the universal amplification of the nag1 gene in the Neocallimastigales fungi.
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Keleshis C, Ionita C, Bednarek DR, Hoffmann K, Verevkin A, Rudin S. SU-DD-A4-04: Micro Angiographic and Fluoroscopic Real-Time Image Data Handling Using Parallel Coding Techniques in LabVIEW. Med Phys 2008. [DOI: 10.1118/1.2961371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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123
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Schmitt J, Hoffmann K, Malhotra H, Bakhtiari M, Nazareth D. SU-GG-J-29: An Optical Guidance System for Patient Setup in Breast Radiotherapy. Med Phys 2008. [DOI: 10.1118/1.2961586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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124
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Patel V, Hoffmann K, Bednarek D, Rudin S. TH-D-332-04: Automatic Registration Technique for Rotating-Gantry Dual-Detector Region-Of-Interest Cone-Beam Computed Tomography (ROI-CBCT). Med Phys 2008. [DOI: 10.1118/1.2962933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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125
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Wang W, Patel V, Keleshis C, Bednarek D, Hoffmann K, Rudin S. SU-GG-I-12: Effect of Geometric Unsharpness On the Reconstructed Image in Region of Interest (ROI) μCT. Med Phys 2008. [DOI: 10.1118/1.2961411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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