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Denker JN, Herbstritt F, Heck J, Grünewald M, Biessey P. Appropriate choice of mixing inserts in a milli‐reactor for g‐L mass transfer intensification in different liquid media. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202255242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J.-N. Denker
- Ruhr University Bochum Laboratory of Fluid Separations Universitätsstr. 150 44801 Bochum Germany
- Ehrfeld Mikrotechnik GmbH Mikroforum Ring 1 55234 Wendelsheim Germany
| | - F. Herbstritt
- Ehrfeld Mikrotechnik GmbH Mikroforum Ring 1 55234 Wendelsheim Germany
| | - J. Heck
- Ehrfeld Mikrotechnik GmbH Mikroforum Ring 1 55234 Wendelsheim Germany
| | - M. Grünewald
- Ruhr University Bochum Laboratory of Fluid Separations Universitätsstr. 150 44801 Bochum Germany
| | - P. Biessey
- Ruhr University Bochum Laboratory of Fluid Separations Universitätsstr. 150 44801 Bochum Germany
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Heck J, Ranker A, Wranke A, Kano L, Macke C, Rademacher J, Stichtenoth DO, Krause O. [The interdisciplinary orthogeriatric ward round : Recommendations for the clinical routine]. Unfallchirurg 2021; 124:138-145. [PMID: 32533212 PMCID: PMC7862189 DOI: 10.1007/s00113-020-00833-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hintergrund Ein orthogeriatrisches Komanagement kann die Behandlungsqualität alterstraumatologischer Patienten verbessern. Fragestellung Ziel dieser Arbeit ist es, Handlungsempfehlungen für den Klinikalltag zu formulieren, um die stationäre Behandlung unfallchirurgischer geriatrischer Patienten zu verbessern. Material und Methoden Über einen Zeitraum von 7 Monaten wurden 226 Patienten an 29 definierten, wöchentlichen Tagen unter Berücksichtigung aktueller Laborergebnisse, Vitalparameter, der Medikation sowie der klinischen Einschätzung des Pflegepersonals besprochen und visitiert. Neben Ärzten verschiedener Fachrichtungen (Unfallchirurgie, Geriatrie, Klinische Pharmakologie, Mikrobiologie) nahmen Pflegekräfte und Case Manager an den Visiten teil. Ergebnisse Pro Patientenkontakt wurden im Durchschnitt drei Handlungsempfehlungen ausgesprochen (zwei pharmakologische und eine allgemeine Empfehlung [z. B. zum Flüssigkeits- und Delirmanagement]). Pharmakologische und allgemeine Empfehlungen wurden in verschiedene Untergruppen eingeteilt. Die häufigste pharmakologische Empfehlung war, ein Medikament abzusetzen (30,4 % aller pharmakologischen Empfehlungen). Diskussion Bei der Pharmakotherapie geriatrischer Patienten müssen Kontraindikationen, Nebenwirkungen, Doppelverordnungen, zirkadiane Aspekte und die Nierenfunktion beachtet werden. Durch regelmäßige Reevaluation medizinischer Fremdkörper kann katheterassoziierten Infektionen vorgebeugt werden. Das Erkennen und die Behandlung eines postoperativen Delirs sind essenzielle Bestandteile einer interdisziplinären alterstraumatologischen Visite. Zur Beurteilung einer antiinfektiven Therapie leistet die Expertise eines Mikrobiologen/Infektiologen einen wertvollen Beitrag.
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Affiliation(s)
- J Heck
- Institut für Klinische Pharmakologie, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, 30625, Hannover, Deutschland.
| | - A Ranker
- Klinik für Unfallchirurgie, Medizinische Hochschule Hannover, Hannover, Deutschland.,Klinik für Rehabilitationsmedizin, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - A Wranke
- Klinik für Gastroenterologie, Hepatologie und Endokrinologie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - L Kano
- Institut für Allgemeinmedizin, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - C Macke
- Klinik für Unfallchirurgie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - J Rademacher
- Klinik für Pneumologie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - D O Stichtenoth
- Institut für Klinische Pharmakologie, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, 30625, Hannover, Deutschland
| | - O Krause
- Institut für Allgemeinmedizin, Medizinische Hochschule Hannover, Hannover, Deutschland.,Zentrum für Medizin im Alter, DIAKOVERE Henriettenstift, Hannover, Deutschland
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Abstract
Im Rahmen der aktuellen coronavirus disease 2019(COVID-19)-Pandemie müssen sich viele Bereiche der Medizin umstrukturieren. Dies betrifft auch die Versorgung von Patienten mit psychischen Erkrankungen. Die Therapie psychischer Erkrankungen umfasst psychotherapeutische und psychopharmakologische Interventionen. Letztere können mit einer Vielzahl an unerwünschten Arzneimittelwirkungen (UAW) assoziiert sein, stellen aber in der aktuellen Situation mit Kontakt- und Ausgangsbeschränkungen die präferierte Therapieoption dar. Da der direkte Patientenkontakt zugunsten des Telefonats oder der Videokonferenz reduziert ist, müssen angepasste diagnostische und therapeutische Optionen gefunden werden, um eine ausreichende Patientensicherheit zu gewährleisten. Bedeutend sind hierbei die ausführliche Aufklärung der Patienten sowie eine aktive Abfrage von Symptomen zur rechtzeitigen Erkennung von UAW. Unter der Behandlung mit Psychopharmaka sind UAW zu befürchten, die besonders ungünstig sind, wenn sie im Rahmen einer akuten Infektion auftreten oder ein erhöhtes Infektionsrisiko begünstigen. Hierzu gehören Atemdepression, Agranulozytose, Intoxikation durch Hemmung des Arzneistoffmetabolismus und venöse Thromboembolien, die jeweils mit potenziell lebensbedrohlichen Folgen einhergehen. Gleichzeitig sollte auf eine ausreichende Wirksamkeit der Medikation geachtet werden, da die gegenwärtige Krise zu einer Exazerbation vorbestehender psychischer Erkrankungen führen bzw. deren Erstmanifestation begünstigen kann.
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Affiliation(s)
- J Seifert
- Klinik für Psychiatrie, Sozialpsychiatrie und Psychotherapie, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, 30625, Hannover, Deutschland.
| | - J Heck
- Klinik für Psychiatrie, Sozialpsychiatrie und Psychotherapie, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, 30625, Hannover, Deutschland
- Institut für Klinische Pharmakologie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - G Eckermann
- Klinik für Forensische Psychiatrie und Psychotherapie, Bezirkskrankenhaus Kaufbeuren, Kaufbeuren, Deutschland
| | - M Singer
- Fachklinik für Psychiatrie, Psychotherapie und Psychosomatik, kbo-Lech-Mangfall-Klinik Agatharied, Hausham, Deutschland
| | - S Bleich
- Klinik für Psychiatrie, Sozialpsychiatrie und Psychotherapie, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, 30625, Hannover, Deutschland
| | - R Grohmann
- Klinik für Psychiatrie und Psychotherapie, Ludwig-Maximilians-Universität München, München, Deutschland
| | - S Toto
- Klinik für Psychiatrie, Sozialpsychiatrie und Psychotherapie, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, 30625, Hannover, Deutschland
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Parutto P, Heck J, Heine M, Holcman D. Biophysics of high density nanometer regions extracted from super-resolution single particle trajectories: application to voltage-gated calcium channels and phospholipids. Sci Rep 2019; 9:18818. [PMID: 31827157 PMCID: PMC6906531 DOI: 10.1038/s41598-019-55124-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/07/2019] [Indexed: 02/08/2023] Open
Abstract
The cellular membrane is very heterogenous and enriched with high-density regions forming microdomains, as revealed by single particle tracking experiments. However the organization of these regions remain unexplained. We determine here the biophysical properties of these regions, when described as a basin of attraction. We develop two methods to recover the dynamics and local potential wells (field of force and boundary). The first method is based on the local density of points distribution of trajectories, which differs inside and outside the wells. The second method focuses on recovering the drift field that is convergent inside wells and uses the transient field to determine the boundary. Finally, we apply these two methods to the distribution of trajectories recorded from voltage gated calcium channels and phospholipid anchored GFP in the cell membrane of hippocampal neurons and obtain the size and energy of high-density regions with a nanometer precision.
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Affiliation(s)
- P Parutto
- Group of Data Modeling and Computational Biology, IBENS-PSL, Ecole Normale Supérieure, 75005, Paris, France
| | - J Heck
- Research Group Functional Neurobiology at the Institute of Developmental Biology and Neurobiology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - M Heine
- Research Group Functional Neurobiology at the Institute of Developmental Biology and Neurobiology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - D Holcman
- Group of Data Modeling and Computational Biology, IBENS-PSL, Ecole Normale Supérieure, 75005, Paris, France. .,DAMPT and Churchill College, University Of Cambridge, Cambridge, CB30DS, United Kingdom.
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Rave A, Kuwertz R, Fieg G, Heck J. Charakterisierung eines kommerziellen Milli-Plattenreaktors. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- A. Rave
- TU Hamburg; Institut für Prozess- und Anlagentechnik; Am Schwarzenberg-Campus 4 21073 Hamburg Deutschland
| | - R. Kuwertz
- Ehrfeld Mikrotechnik GmbH; Mikroforum-Ring 1 55234 Wendelsheim Deutschland
| | - G. Fieg
- TU Hamburg; Institut für Prozess- und Anlagentechnik; Am Schwarzenberg-Campus 4 21073 Hamburg Deutschland
| | - J. Heck
- Ehrfeld Mikrotechnik GmbH; Mikroforum-Ring 1 55234 Wendelsheim Deutschland
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Heck J, Currie C, Fagan EB. Mountain Area Health Education Center Expands Training in Family Medicine and Adds New Programs in Psychiatry and General Surgery. N C Med J 2017; 78:67-70. [PMID: 28115574 DOI: 10.18043/ncm.78.1.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jeff Heck
- president and chief executive officer, Mountain Area Health Education Center; associate dean, School of Medicine, University of North Carolina-Asheville, Asheville, North Carolina
| | - Christa Currie
- program manager, Rural Education, Mountain Area Health Education Center, Asheville, North Carolina
| | - E Blake Fagan
- chief education officer, Mountain Area Health Education Center, Asheville, North Carolina
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Sengen AL, Herbstritt F, Grünewald M, Heck J. Hydrodynamische Charakterisierung einer millistrukturierten Apparate-Technologie für den Wärme- und Stoffübergang. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Rave A, Kuwertz R, Fieg G, Heck J. Experimentelle und theoretische Charakterisierung eines millistrukturierten Plattenreaktors. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Siega-Riz AM, Del Campo YE, Kinlaw A, Reinhart GA, Allen LH, Shahab-Ferdows S, Heck J, Suchindran CM, Bentley ME. Effect of supplementation with a lipid-based nutrient supplement on the micronutrient status of children aged 6-18 months living in the rural region of Intibucá, Honduras. Paediatr Perinat Epidemiol 2014; 28:245-54. [PMID: 24628577 PMCID: PMC7213595 DOI: 10.1111/ppe.12117] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Lipid-based nutrient supplements (LNS) have been effective in the treatment of acute malnutrition among children. We evaluated the use of LNS supplementation for improving the micronutrient status of young children. METHODS A 12-month randomised controlled trial was conducted among children aged 6-18 months living in Intibucá, Honduras. Communities (n = 18) were randomised into clusters matched by poverty indicators (9 intervention, n = 160 and 9 controls, n = 140). Intervention participants received LNS. All children received food vouchers and nutrition education. Primary outcomes included measures of micronutrient status: at baseline, 6 and 12 months' blood were collected for assessment of folate, iron, zinc, riboflavin, and vitamin B12 status; haemoglobin was measured every 3 months; and dietary and anthropometry collected monthly. Longitudinal analyses were based on intent to treat and LNS adherence. Generalised estimating equations were used in the estimation of generalised linear regression models specified for the data. RESULTS At 6-month follow-up, children in the intervention group had a lower proportion classified as deficient for B12 (43.6%) compared with the control (67.7%; P = 0.03). The intervention group had a higher mean concentration for folate at 6 months (P = 0.06), and improvements continued through 12 months for folate (P = 0.002) and vitamin A deficiency (P = 0.03). This pattern of results, with improved significance, remained in subanalysis based on LNS adherence. CONCLUSION These data demonstrate that LNS improved select micronutrient status in young non-malnourished Honduran children.
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Affiliation(s)
- Anna Maria Siega-Riz
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
- Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
| | - Yaniré Estrada Del Campo
- Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
| | - Alan Kinlaw
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
| | | | | | | | - Jeff Heck
- University of North Carolina, Mountain Area Health Education Center, Asheville, NC
| | - Chirayath M. Suchindran
- Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
| | - Margaret E. Bentley
- Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
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Biessey P, Piepenbrock M, Schael F, Herbstritt F, Heck J, Grünewald M. Ein skalierbares, modulares Reaktorkonzept zur Prozessintensivierung. CHEM-ING-TECH 2013. [DOI: 10.1002/cite.201250693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Matthes PR, Höller CJ, Mai M, Heck J, Sedlmaier SJ, Schmiechen S, Feldmann C, Schnick W, Müller-Buschbaum K. Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15571k] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Percec V, Heck J, Johansson G, Tomazos D, Ungar G. Towards tobacco mosaic virus-like self-assembled supramolecular architectures. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19940770127] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M, Chu P, Ungar G. Molecular Recognition Directed Self-Assembly of Supramolecular Liquid Crystals. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408036075] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- V. Percec
- a Department of Macromolecular Science , Case Western Reserve University , Cleveland , OH , 44106-7202 , USA
| | - J. Heck
- a Department of Macromolecular Science , Case Western Reserve University , Cleveland , OH , 44106-7202 , USA
| | - G. Johansson
- a Department of Macromolecular Science , Case Western Reserve University , Cleveland , OH , 44106-7202 , USA
| | - D. Tomazos
- a Department of Macromolecular Science , Case Western Reserve University , Cleveland , OH , 44106-7202 , USA
| | - M. Kawasumi
- a Department of Macromolecular Science , Case Western Reserve University , Cleveland , OH , 44106-7202 , USA
| | - P. Chu
- a Department of Macromolecular Science , Case Western Reserve University , Cleveland , OH , 44106-7202 , USA
| | - G. Ungar
- b Department of Engineering Materials and Centre for Molecular Materials , The University of Sheffield , Sheffield , S1 DU , UK
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Heck J, Nieves J, Chen Y, Graziano J, Ahsan H. Protein, Methionine, and Cystine and arsenic-Related Skin Lesions in Bangladesh. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s44-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Slattery D, Heck J. An opportunity for reform: A comprehensive evaluation of non-transport patterns in an urban emergency medical services setting. Ann Emerg Med 2004. [DOI: 10.1016/j.annemergmed.2004.07.341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Elschenbroich C, Heck J. .mu.-(.eta.6:.eta.6-Biphenyl)-bis[(.eta.6-benzene)chromium] and bis[.mu.-(.eta.6:.eta.6-biphenyl)]-dichromium. Novel species to explore mixed-valence sandwich complex chemistry. J Am Chem Soc 2002. [DOI: 10.1021/ja00516a060] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Elschenbroich C, Heck J, Massa W, Nun E, Schmidt R. .mu.-(.eta.5:.eta.5-Cyclooctatetraene)bis[(.eta.5-cyclopentadienyl)vanadium]: preparation, structure and ESR characterization of its radical anion. J Am Chem Soc 2002. [DOI: 10.1021/ja00347a069] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Percec V, Heck J, Ungar G. Liquid-crystalline polymers containing mesogenic units based on half-disk and rodlike moieties. 5. Side-chain liquid-crystalline poly(methylsiloxanes) containing hemiphasmidic mesogens based on 4-[[3,4,5,-tris(alkan-1-yloxy)benzoyl]oxy]-4'-[[p-(propan-1-yloxy)benzoyl]oxy]biphenyl groups. Macromolecules 2002. [DOI: 10.1021/ma00017a036] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jessen L, Haupt ET, Heck J. Organometallic supramolecular chemistry with monosaccharides: triethylammonium mu-chloro-bis[chloro(eta5-cyclopentadienyl)-(methyl 4,6-o-benzylidene-beta-D-glucopyranosidato-1kappaO2,1:2kappaO3) zirconate]. Chemistry 2001; 7:3791-7. [PMID: 11575781 DOI: 10.1002/1521-3765(20010903)7:17<3791::aid-chem3791>3.0.co;2-b] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The reaction of [CpZrCl3(thf)2] with methyl 4,6-O-benzylidene-beta-D-glucopyranoside (beta-MeBGH2, 1) in the presence of Et3N results in the formation of the zirconate complex [Et3NH] [(CpZrCl)2(mu-Cl) (mu-(beta-MeBG)]2] (2). X-ray structure analyses were performed from the ligand precursor beta-MeBGH2 1 as well as from 2. Compound 1 crystallizes in the monoclinic chiral space group P2(1). The molecules show a flat arrangement including the benzylidene protecting group, and are packed in columns. The columns are held together in pairs by the formation of hydrogen bonds between the hydroxy functions in positions 2 and 3. Compound 2 crystallizes in the orthorhombic space group P2(1)2(1)2(1). The beta-MeBG ligands are chelating the Zr atoms through the oxygen atoms in positions 2 and 3 of the glucopyranosidato ligand revealing a 1-zircona-2,5-dioxolane moiety each; the oxygen atom in position 3 is linked to both of the Zr atoms. Additionally one chloro ligand is bridging the two Zr centers. Two terminally bound chloro ligands stick out from the two Zr atoms into a chiral U-shaped cavity constructed by the two beta-MeBG ligands. The cavity incorporates the tertiary ammonium cation [Et3NH]+ which is bound to one of the terminal chloro ligands through a hydrogen bond. The inclusion of the [Et3NH]+ cation in the U-shaped cavity, even in solution, is demonstrated by NMR spectroscopic data.
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Affiliation(s)
- L Jessen
- Institut für Anorganische und Angewandte Chemie, Hamburg, Germany
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Aubert B, Boutigny D, De Bonis I, Gaillard JM, Jeremie A, Karyotakis Y, Lees JP, Robbe P, Tisserand V, Palano A, Chen GP, Chen JC, Qi ND, Rong G, Wang P, Zhu YS, Eigen G, Reinertsen PL, Stugu B, Abbott B, Abrams GS, Borgland AW, Breon AB, Brown DN, Button-Shafer J, Cahn RN, Clark AR, Dardin S, Day C, Dow SF, Elioff T, Fan Q, Gaponenko I, Gill MS, Goozen FR, Gowdy SJ, Gritsan A, Groysman Y, Jacobsen RG, Jared RC, Kadel RW, Kadyk J, Karcher A, Kerth LT, Kipnis I, Kluth S, Kolomensky YG, Kral JF, Lafever R, LeClerc C, Levi ME, Lewis SA, Lionberger C, Liu T, Long M, Lynch G, Marino M, Marks K, Meyer AB, Mokhtarani A, Momayezi M, Nyman M, Oddone PJ, Ohnemus J, Oshatz D, Patton S, Perazzo A, Peters C, Pope W, Pripstein M, Quarrie DR, Rasson JE, Roe NA, Romosan A, Ronan MT, Shelkov VG, Stone R, Telnov AV, von der Lippe H, Weber T, Wenzel WA, Zisman MS, Bright-Thomas PG, Harrison TJ, Hawkes CM, Kirk A, Knowles DJ, O'Neale SW, Watson AT, Watson NK, Deppermann T, Koch H, Krug J, Kunze M, Lewandowski B, Peters K, Schmuecker H, Steinke M, Andress JC, Barlow NR, Bhimji W, Chevalier N, Clark PJ, Cottingham WN, De Groot N, Dyce N, Foster B, Mass A, McFall JD, Wallom D, Wilson FF, Abe K, Hearty C, Mattison TS, McKenna JA, Thiessen D, Camanzi B, Jolly S, McKemey AK, Tinslay J, Blinov VE, Bukin AD, Bukin DA, Buzykaev AR, Dubrovin MS, Golubev VB, Ivanchenko VN, Kolachev GM, Korol AA, Kravchenko EA, Onuchin AP, Salnikov AA, Serednyakov SI, Skovpen YI, Telnov VI, Yushkov AN, Lankford AJ, Mandelkern M, McMahon S, Stoker DP, Ahsan A, Buchanan C, Chun S, MacFarlane DB, Prell S, Rahatlou S, Raven G, Sharma V, Burke S, Campagnari C, Dahmes B, Hale D, Hart PA, Kuznetsova N, Kyre S, Levy SL, Long O, Lu A, Richman JD, Verkerke W, Witherell M, Yellin S, Beringer J, Dorfan DE, Eisner AM, Frey A, Grillo AA, Grothe M, Heusch CA, Johnson RP, Kroeger W, Lockman WS, Pulliam T, Sadrozinski H, Schalk T, Schmitz RE, Schumm BA, Seiden A, Spencer EN, Turri M, Walkowiak W, Williams DC, Chen E, Dubois-Felsmann GP, Dvoretskii A, Hanson JE, Hitlin DG, Metzler S, Oyang J, Porter FC, Ryd A, Samuel A, Weaver M, Yang S, Zhu RY, Devmal S, Geld TL, Jayatilleke S, Jayatilleke SM, Mancinelli G, Meadows BT, Sokoloff MD, Bloom P, Fahey S, Ford WT, Gaede F, van Hoek WC, Johnson DR, Michael AK, Nauenberg U, Olivas A, Park H, Rankin P, Roy J, Sen S, Smith JG, Wagner DL, Blouw J, Harton JL, Krishnamurthy M, Soffer A, Toki WH, Warner DW, Wilson RJ, Zhang J, Brandt T, Brose J, Colberg T, Dahlinger G, Dickopp M, Dubitzky RS, Eckstein P, Futterschneider H, Krause R, Maly E, Müller-Pfefferkorn R, Otto S, Schubert KR, Schwierz R, Spaan B, Wilden L, Behr L, Bernard D, Bonneaud GR, Brochard F, Cohen-Tanugi J, Ferrag S, Fouque G, Gastaldi F, Matricon P, Mora de Freitas P, Renard C, Roussot E, T'Jampens S, Thiebaux C, Vasileiadis G, Verderi M, Anjomshoaa A, Bernet R, Di Lodovico F, Khan A, Muheim F, Playfer S, Swain JE, Falbo M, Bozzi C, Dittongo S, Folegani M, Piemontese L, Treadwell E, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Falciai D, Finocchiaro G, Patteri P, Peruzzi IM, Piccolo M, Xie Y, Zallo A, Bagnasco S, Buzzo A, Contri R, Crosetti G, Lo Vetere M, Macri M, Monge MR, Pallavicini M, Passaggio S, Pastore FC, Patrignani C, Pia MG, Robutti E, Santroni A, Morii M, Bartoldus R, Dignan T, Hamilton R, Mallik U, Cochran J, Crawley HB, Fischer PA, Lamsa J, McKay R, Meyer WT, Rosenberg EI, Albert JN, Beigbeder C, Benkebil M, Breton D, Cizeron R, Du S, Grosdidier G, Hast C, Höcker A, LePeltier V, Lutz AM, Plaszczynski S, Schune MH, Trincaz-Duvoid S, Truong K, Valassi A, Wormser G, Bionta RM, Brigljević V, Brooks A, Fackler O, Fujino D, Lange DJ, Mugge M, O'Connor TG, Pedrotti B, Shi X, van Bibber K, Wenaus TJ, Wright DM, Wuest CR, Yamamoto B, Carroll M, Fry JR, Gabathuler E, Gamet R, George M, Kay M, Payne DJ, Sloane RJ, Touramanis C, Aspinwall ML, Bowerman DA, Dauncey PD, Egede U, Eschrich I, Gunawardane NJ, Martin R, Nash JA, Price DR, Sanders P, Smith D, Azzopardi DE, Back JJ, Dixon P, Harrison PF, Newman-Coburn D, Potter RJ, Shorthouse HW, Strother P, Vidal PB, Williams MI, Cowan G, George S, Green MG, Kurup A, Marker CE, McGrath P, McMahon TR, Salvatore F, Scott I, Vaitsas G, Brown D, Davis CL, Ford K, Li Y, Pavlovich J, Allison J, Barlow RJ, Boyd JT, Fullwood J, Jackson F, Lafferty GD, Savvas N, Simopoulos ET, Thompson RJ, Weatherall JH, Bard R, Farbin A, Jawahery A, Lillard V, Olsen J, Roberts DA, Schieck JR, Blaylock G, Dallapiccola C, Flood KT, Hertzbach SS, Kofler R, Lin CS, Staengle H, Willocq S, Wittlin J, Brau B, Cowan R, Sciolla G, Taylor F, Yamamoto RK, Britton DI, Milek M, Patel PM, Trischuk J, Lanni F, Palombo F, Bauer JM, Booke M, Cremaldi L, Eschenberg V, Kroeger R, Reep M, Reidy J, Sanders DA, Summers DJ, Beaulieu M, Martin JP, Nief JY, Seitz R, Taras P, Zacek V, Nicholson H, Sutton CS, Cavallo N, Cartaro C, De Nardo G, Fabozzi F, Gatto C, Lista L, Paolucci P, Piccolo D, Sciacca C, LoSecco JM, Alsmiller JR, Gabriel TA, Handler T, Heck J, Brau JE, Frey R, Iwasaki M, Sinev NB, Strom D, Borsato E, Colecchia F, Dal Corso F, Galeazzi F, Margoni M, Marzolla M, Michelon G, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Torassa E, Voci C, Bailly P, Benayoun M, Briand H, Chauveau J, David P, De La Vaissière C, Del Buono L, Genat JF, Hamon O, Le Diberder F, Lebbolo H, Leruste P, Lory J, Martin L, Roos L, Stark J, Versillé S, Zhang B, Manfredi PF, Ratti L, Re V, Speziali V, Frank ED, Gladney L, Guo QH, Panetta JH, Angelini C, Batignani G, Bettarini S, Bondioli M, Bosi F, Carpinelli M, Forti F, Giorgi MA, Lusiani A, Martinez-Vidal F, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Sandrelli F, Simi G, Triggiani G, Walsh J, Hairre M, Judd D, Paick K, Turnbull L, Wagoner DE, Albert J, Bula C, Fernholz R, Lu C, McDonald KT, Miftakov V, Sands B, Schaffner SF, Smith AJ, Tumanov A, Varnes EW, Bronzini F, Buccheri A, Bulfon C, Cavoto G, del Re D, Faccini R, Ferrarotto F, Ferroni F, Fratini K, Lamanna E, Leonardi E, Mazzoni MA, Morganti S, Piredda G, Safai Tehrani F, Serra M, Voena C, Waldi R, Jacques PF, Kalelkar M, Plano RJ, Adye T, Claxton B, Franek B, Galagedera S, Geddes NI, Gopal GP, Lidbury J, Xella SM, Aleksan R, Besson P, Bourgeois P, De Domenico G, Emery S, Gaidot A, Ganzhur SF, Gosset L, Hamel de Monchenault G, Kozanecki W, Langer M, London GW, Mayer B, Serfass B, Vasseur G, Yeche C, Zito M, Copty N, Purohit MV, Singh H, Yumiceva FX, Adam I, Anthony PL, Aston D, Baird K, Bartelt J, Becla J, Bell R, Bloom E, Boeheim CT, Boyarski AM, Boyce RF, Bulos F, Burgess W, Byers B, Calderini G, Claus R, Convery MR, Coombes R, Cottrell L, Coupal DP, Coward DH, Craddock WW, DeStaebler H, Dorfan J, Doser M, Dunwoodie W, Ecklund S, Fieguth TH, Field RC, Freytag DR, Glanzman T, Godfrey GL, Grosso P, Haller G, Hanushevsky A, Harris J, Hasan A, Hewett JL, Himel T, Huffer ME, Innes WR, Jessop CP, Kawahara H, Keller L, Kelsey MH, Kim P, Klaisner LA, Kocian ML, Krebs HJ, Kunz PF, Langenegger U, Langeveld W, Leith DW, Louie SK, Luitz S, Luth V, Lynch HL, MacDonald J, Manzin G, Mariske H, McCulloch M, McShurley D, Menke S, Messner R, Metcalfe S, Moffeit KC, Mount R, Muller DR, Nelson D, Nordby M, O'Grady CP, O'Neill FG, Oxoby G, Pavel T, Perl J, Petrak S, Putallaz G, Quinn H, Raines PE, Ratcliff BN, Reif R, Robertson SH, Rochester LS, Roodman A, Russell JJ, Sapozhnikov L, Saxton OH, Schietinger T, Schindler RH, Schwiening J, Seeman JT, Serbo VV, Skarpass K, Snyder A, Soha A, Spanier SM, Stahl A, Stelzer J, Su D, Sullivan MK, Talby M, Tanaka HA, Va'vra J, Wagner SR, Weinstein AJ, White JL, Wienands U, Wisniewski WJ, Young CC, Zioulas G, Burchat PR, Cheng CH, Kirkby D, Meyer TI, Roat C, De Silva A, Henderson R, Berridge S, Bugg W, Cohn H, Hart E, Weidemann AW, Benninger T, Izen JM, Kitayama I, Lou XC, Turcotte M, Bianchi F, Bona M, Di Girolamo B, Gamba D, Smol A, Zanin D, Bosisio L, Della Ricca G, Lanceri L, Pompili A, Poropat P, Vuagnin G, Panvini RS, Brown CM, Kowalewski R, Roney JM, Band HR, Charles E, Dasu S, Elmer P, Hu H, Johnson JR, Nielsen J, Orejudos W, Pan Y, Prepost R, Scott IJ, von Wimmersperg-Toeller JH, Wu SL, Yu Z, Zobernig H, Kordich TM, Moore TB, Neal H. Measurement of CP-violating asymmetries in B0 decays to CP eigenstates. Phys Rev Lett 2001; 86:2515-2522. [PMID: 11289970 DOI: 10.1103/physrevlett.86.2515] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2001] [Indexed: 05/23/2023]
Abstract
We present measurements of time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates. The measurement uses a data sample of 23x10(6) Upsilon(4S)-->BbarB decays collected by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we find events in which one neutral B meson is fully reconstructed in a CP eigenstate containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2beta, is derived from the decay time distributions in such events. The result is sin2beta = 0.34+/-0.20 (stat)+/-0.05 (syst).
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Affiliation(s)
- B Aubert
- Laboratoire de Physique des Particules, Annecy-le-Vieux, France
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Abstract
The electronic structure of two cyclooctatetraene-bridged dinuclear first-row transition metal complexes of the type [(CpM)[(CO)3M']]mu-Cot (M = Cr; M' = Fe (1), Cr (2)) was investigated by complete active space self-consistent field (CASSCF) calculations. In this context the differences in the binding capabilities of the complex fragments CpM and (CO)3M are discussed on the basis of extended Huckel molecular orbital (MO) calculations. The geometries used for the CASSCF calculations for complex 1 were obtained from the crystal structure. For 2 a model structure was established by geometry optimization using density functional methods. The CASSCF results agree well with the experimental findings and provide insight into the binding situation of the two compounds. Complex 1 can be regarded as being composed of a chromocene-like subunit CpCr(eta5-C5H5) and the fragment (CO)3Fe(eta3-C3H3). A direct metal-metal bond is found, involving one initially singly occupied orbital of each fragment, leading to a doublet ground state for 1 with the remaining unpaired electron localized at the chromium center. For 2 no such direct metal-metal bond can be recognized. A very weak direct metal-metal interaction is induced by electron donation from the Cot2- ligand into a formally unoccupied metal-metal binding orbital combination. In the quartet ground state all three unpaired electrons are localized at the chromium center of the formally doubly positive charged CpCr unit, on which complex fragment [(CO)3Cr(eta5-Cot)]2- acts like a cyclopentadienyl ligand. The coordination sphere of the chromium center of the CpCr unit resembles that of a metallocene metal center and its metal 3d occupation scheme corresponds to that of vanadocene.
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Affiliation(s)
- U Richter
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8380, USA
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Heck J, Fildes J, Tsang A. The impact of a system-wide airway management in-service on paramedic intubation practices. Ann Emerg Med 1999. [DOI: 10.1016/s0196-0644(99)80367-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Estrogen stimulation of the production of teh yolk protein precursor vitellogenin was demonstrated in immature Kemp's ridley sea turtles. 17beta-Estradiol injection elicited an increase in serum estrogen, protein, protein phosphorus, and total calcium within 7 days. Associated with these changes was the appearance of a single, dimethylformamide-precipitable, 205-kDa estradiol-induced serum protein, which became the predominant serum protein identified by polyacrylamide gel electrophoresis. The effects of estradiol injection were maintained for 3 months following termination of estradiol administration, despite a decline in serum estrogen levels. Although studies in other species have indicated that changes in circulating vitellogenin levels can influence thyroid hormone transport, no changes were observed throughout the study in total blood levels of thyroxine or triiodothyronine or protein binding of these hormones. We conclude that in the immature Kemp's ridley estrogen induces the synthesis and secretion of a vitellogenin which resembles that of other reptiles, but which does not influence thyroid hormone transport. The prolonged presence of vitellogenin in the blood may be due to a lack of an active ovarian uptake mechanism in these immature animals.
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Affiliation(s)
- J Heck
- Department of Biology, Texas A&M University, College Station, Texas 77843, USA
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Magowan C, Brown JT, Liang J, Heck J, Coppel RL, Mohandas N, Meyer-Ilse W. Intracellular structures of normal and aberrant Plasmodium falciparum malaria parasites imaged by soft x-ray microscopy. Proc Natl Acad Sci U S A 1997; 94:6222-7. [PMID: 9177198 PMCID: PMC21030 DOI: 10.1073/pnas.94.12.6222] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Soft x-ray microscopy is a novel approach for investigation of intracellular organisms and subcellular structures with high spatial resolution. We used x-ray microscopy to investigate structural development of Plasmodium falciparum malaria parasites in normal and genetically abnormal erythrocytes and in infected erythrocytes treated with cysteine protease inhibitors. Investigations in normal red blood cells enabled us to recognize anomalies in parasite structures resulting from growth under unfavorable conditions. X-ray microscopy facilitated detection of newly elaborated structures in the cytosol of fixed, unstained, intact erythrocytes, redistribution of mass (carbon) in infected erythrocytes, and aberrant parasite morphology. In cysteine protease inhibitor-treated, infected erythrocytes, high concentrations of material were detected in abnormal digestive vacuoles and aggregated at the parasite plasma membrane. We have demonstrated that an abnormal host erythrocyte skeleton affects structural development of parasites and that this aberrant development can be detected in the following generation when parasites from protein 4.1-deficient red blood cells infect normal erythrocytes. This work extends our current understanding of the relationship between the host erythrocyte membrane and the intraerythrocytic malaria parasite by demonstrating for the first time that constituents of the erythrocyte membrane play a role in normal parasite structural development.
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Affiliation(s)
- C Magowan
- Life Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
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Gabski HP, Lauschke G, Heck J, Semel J. 2. Numerische Simulation des Strömungsfeldes in Rührbehältern und Vergleich mit Meßergebnissen. CHEM-ING-TECH 1996. [DOI: 10.1002/cite.330680904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Berger R, Gjedde A, Rischke R, Müller E, Heck J, Krieglstein J, Jensen A. Local cerebral glucose utilization in fetal guinea pigs at 0.75 gestation. Eur J Obstet Gynecol Reprod Biol 1996; 66:175-8. [PMID: 8735743 DOI: 10.1016/0301-2115(96)02403-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Using the 2-deoxyglucose method, measurements of local cerebral glucose utilization in large fetal animals are very difficult and expensive. To circumvent these problems we recently modified the 2-deoxyglucose method for use in the fetal guinea pig in utero (Berger et al., J Neurochem 1994; 63: 271-279). The present study was designed to measure the rates of local cerebral glucose utilization in fetal guinea pigs at 0.75 of gestation. STUDY DESIGN After intravenous injection of 14C 2-deoxyglucose into the dams, local cerebral glucose utilization of the fetuses was measured from the time integral of the tracer in the maternal plasma and the autoradiographically determined concentration of the tracer in various parts of the fetal brain. RESULTS Fetal cerebral glucose utilization was low as compared to adult animals and varied in different brain structures from 19 +/- 4 to 29 +/- 7 mumol/100 g/min. CONCLUSION This study demonstrates the feasibility to measure local cerebral glucose utilization in undisturbed fetal guinea pigs in utero. We conclude that the low rate of cerebral glucose utilization and its small overall variability may reflect the neurological immaturity of the fetal brain.
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Affiliation(s)
- R Berger
- Department of Obstetrics and Gynecology, Justus-Liebig-Universität Giessen, Germany
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Heck J. Regina health district & management. Southern Saskatchewan Stroke Prevention Unit. Axone 1994; 16:36. [PMID: 7727294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M, Ungar G. Molecular-Recognition-Directed Self-Assembly of Supramolecular Polymers. Journal of Macromolecular Science, Part A 1994. [DOI: 10.1080/10601329409349776] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Berger R, Gjedde A, Heck J, Müller E, Krieglstein J, Jensen A. Extension of the 2-deoxyglucose method to the fetus in utero: theory and normal values for the cerebral glucose consumption in fetal guinea pigs. J Neurochem 1994; 63:271-9. [PMID: 8207433 DOI: 10.1046/j.1471-4159.1994.63010271.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Fetal cerebral metabolism changes during development. The normal fetal metabolic rate must be known to evaluate pathophysiological changes. Therefore, we determined the regional cerebral glucose consumption in the fetal guinea pig. This required the application of the 2-deoxyglucose method to this species. We measured both the transfer coefficients of deoxyglucose and glucose between the maternal arterial plasma and the fetal brain and the lumped constant in chronically prepared undisturbed guinea pig dams using a three-compartment model. Furthermore, the ratio between the initial clearances of deoxyglucose and glucose between the maternal arterial plasma and the fetal brain and the ratio between the phosphorylation coefficients of these substrates in the fetal brain were determined. The total cerebral glucose consumption measured by the deoxyglucose method (10 +/- 1.2 mumol/100 g/min) was similar to that calculated from the glucose concentration and the phosphorylation coefficient of glucose in the cerebrum (10 +/- 0.4 mumol/100 g/min). We conclude that the 2-deoxyglucose method is applicable to the guinea pig, and we further conclude that in the fetal guinea pig cerebral glucose consumption is 10 times lower than that in the adult.
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Affiliation(s)
- R Berger
- Department of Obstetrics & Gynecology, University of Giessen, Germany
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Ungar G, Batty SV, Percec V, Heck J, Johansson G. Structure and conductivity of liquid crystal channel-like linic complexes of taper-shaped compounds. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/amo.860040410] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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van der Linden J, Heck J, Walther B, Böttcher HC. Electrochemical investigation of the electron-poor/precise (n=5/6) complexes [Fe2(CO)n(μ-PR2)(μ-PR′2)] (n=5, RR′But; n=6, RR′Ph; RBut, R′Ph; RBut, R′Cy). EPR study of the radical anion [Fe2(μ-PBut2)2(CO)5]·.−. Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(93)03748-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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van den Berg W, Boot C, van der Linden J, Bosman W, Smits J, Beurskens P, Heck J. Two silicon-bridged cyclopentadienyl Fe2S4 cluster units connected through an Fe(III)S6 unit. Crystal and molecular structure of [((CH3)2SiCp′2)2Fe5(μ3-S2)2(μ4-S2)2(μ4-S4)]FeCl4. Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(93)03719-q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M, Ungar G. Molecular-Recognition-Directed Self-Assembly of Supramolecular Polymers. J of Macromolecular Sc , Part A 1994. [DOI: 10.1080/10601329408545688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M, Chu P, Ungar G. Molecular Recognition Directed Self-Assembly of Supramolecular Architectures. Journal of Macromolecular Science, Part A 1994. [DOI: 10.1080/10601329408545879] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Heck J. Drug testing. J Athl Train 1993; 28:197-8. [PMID: 16558226 PMCID: PMC1317708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- J Heck
- Jon Heck is Head Athletic Trainer at Stockton State College, Pomona, NJ 08240-9988
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Percec V, Heck J. Liquid crystalline polymers containing mesogenic units based on half-disc and rod-like moieties. I. Synthesis and characterization of 4-(11-undecan-1-yloxy)-4′-[3,4,5-tri(p-n-dodecan-1-yloxybenzyloxy)benzoate]biphenyl side groups. ACTA ACUST UNITED AC 1991. [DOI: 10.1002/pola.1991.080290416] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
In a 47-year-old man with non-Hodgkin's lymphoma which had been treated by polychemotherapy and radiation, cardiac involvement was suspected on computed tomography (CT) two years after diagnosis. The ECG demonstrated atrial flutter and a slow ventricular rate. After a further cycle of chemotherapy the patients declined further treatment. Two years later he was admitted urgently because of cardiac failure, atrial fibrillation with a slow ventricular rate, and clear signs of abnormal repolarization. CT of the thorax again provided signs of cardiac involvement with lymphoma. In addition there were extensive tumour infiltrates in the liver and paraaortic lymph-node. Despite intensive medical treatment he died shortly after admission from cardiac failure. At necropsy all four cardiac chambers and the coronary arteries were surrounded completely by tumour tissue. The membranous interventricular septum, the area of the Hiss bundle and the tricuspid and mitral valves had also been infiltrated. Histologically the infiltrates consisted of lymphoid cells of centrocytic type. Increasing tumour cell involvement went together with complete disintegration of myocardial fibres.
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Affiliation(s)
- E Bierhoff
- Pathologisches Institut, Universität Bonn
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Heck J, Heinecke G. [Anxiety before gastrointestinal endoscopy]. Dtsch Med Wochenschr 1991; 116:356. [PMID: 1997312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Hesch RD, Heck J, Delling G, Keck E, Reeve J, Canzler H, Schober O, Harms H, Rittinghaus EF. Results of a stimulatory therapy of low bone metabolism in osteoporosis with (1-38)hPTH and diphosphonate EHDP. Protocol of study I, osteoporosis trial Hannover. Klin Wochenschr 1988; 66:976-84. [PMID: 3141672 DOI: 10.1007/bf01738113] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In contrast to prevention, the therapy of manifest osteoporosis remains a clinically significant problem. So far all therapeutic attempts have yielded unsatisfying results. For this reason we have tried to achieve a positive bone balance by sequential stimulation and inhibition of the osseous metabolism. The therapy consisted of six 14-day courses with 400 units (1-38)hPTH per day and, in addition, starting with the 2nd week of PTH therapy, EHDP 5 mg per kg body weight per day for a total of 2 weeks. Already the initial therapeutic course resulted in a stimulation of decreased bone metabolism which could be documented by an increase in the calcium-47 accretion rate (six patients). An increase of the alkaline phosphatase could be noted (four patients); this, however, did not correlate with the calcium accretion. A positive calcium balance could, nonetheless, only be attained in four of eight patients within this period, while neither the alkaline phosphatase nor the kinetics would allow a prediction of this effect. Changes of the balance coincided with equal changes in the net calcium absorption. The urinary calcium excretion increased temporarily during the therapeutic phase. We were not able to detect an influence on the vitamin D metabolites. Histomorphometric studies did not demonstrate an increase in bone mass in the iliac creast after six therapeutic courses. Nevertheless, progressive deformations of vertebral bodies did not occur. We conclude that already after 2 weeks this therapeutic concept can lead to a stimulation of bone metabolism.
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Affiliation(s)
- R D Hesch
- Abteilung für Klinische Endokrinologie Diätetik und Nuklearmedizin, Medizinischen Hochschule Hannover
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Heinecke G, Heck J. [Effectiveness of the electrohydrothermoprobe in gastrointestinal hemorrhages]. Med Klin (Munich) 1987; 82:571-2. [PMID: 3498880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Heck J. [Malignant lymphoma of the small intestine after long-existent sprue]. Dtsch Med Wochenschr 1984; 109:1988. [PMID: 6510250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Hesch RD, Heck J, Auf'mKolk B, Schettler T, Atkinson MJ. First clinical observations with hPTH(1-38), a more potent human parathyroid hormone peptide. Horm Metab Res 1984; 16:559-60. [PMID: 6500494 DOI: 10.1055/s-2007-1014852] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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