1
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El Hanache H, Verdaguer M, Collin L, Babin M, Favrelière S, Vidal Husser S, Maissiat MH, Hoppe A, Morisset M. Two Cases of Anaphylaxis to Tranexamic Acid Confirmed by Drug Provocation Test: What About Skin Tests? J Investig Allergol Clin Immunol 2021; 31:351-353. [PMID: 33136003 DOI: 10.18176/jiaci.0651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- H El Hanache
- Allergy Unit, Angers University Hospital, Angers, France
| | - M Verdaguer
- Regional Allergology Center, Poitiers University Hospital, Poitiers, France
| | - L Collin
- Allergy Unit, Angers University Hospital, Angers, France
| | - M Babin
- Department of Pharmacology-Toxicology and Pharmacovigilance Unit, Angers University Hospital, Angers, France
| | - S Favrelière
- Department of Pharmacology and Pharmacovigilance Unit, Poitiers University Hospital, Poitiers, France
| | - S Vidal Husser
- Department of Anesthesia and Reanimation, Angers University Hospital Angers, France
| | - M H Maissiat
- Department of Anesthesia and Reanimation, Saint Léonard Clinic, Trélazé, France
| | - A Hoppe
- Allergy Unit, Angers University Hospital, Angers, France
| | - M Morisset
- Allergy Unit, Angers University Hospital, Angers, France
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2
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Sepúlveda P, Acosta I, Hoppe A, Lobo FA, Carrasco E. Influence of rate of administration on the mechanism behind propofol induced loss of consciousness. Rev Esp Anestesiol Reanim (Engl Ed) 2021; 68:245-251. [PMID: 34140123 DOI: 10.1016/j.redare.2020.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/26/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Propofol effect-site time course models included in TCI systems have been under discussion. We hypothesized that the rate of administration is a major contributor affecting the construction of a useful effect-site model: yielding different plasmatic concentrations, loss of consciousness may occur by different mechanisms more complex than the pharmacological effect-site. METHODOLOGY ASA III patients were randomized in two groups: rapid induction (RI) received TCI of propofol effect-site (CeCALC) 5.4 μg/mL (modified Marsh model), and slow induction (SI) propofol infusion of 10 mg/kg/hour. A neurologist, blinded to induction method, performed neurological assessments using the FOUR score until the loss of consciousness (LOC). At LOC, the presence of brain stem reflexes, EEG index (PSI) and infusion time/mass of drug were registered. Fisher's exact test was used to describe differences between brain stem reflexes and respiration components of the FOUR score and CeCALC for 4 propofo models at LOC time. RESULTS 16 patients divided in two groups were included. All patient in SI had brainstem reflexes free at LOC. In the RI, all patients had brain stem reflexes abolished and 1 patient had B and R of 4 points in the FOUR score (brain stem reflexes unaffected; P < .001). CeCALC at LOC time were contradictory at LOC in both groups and using 4 different Pk/Pd models. CONCLUSIONS Depending of the infusion rate, propofol CeCALC at LOC calculated by different Pk/Pd models could be the source of confuse data to be used to guide the state of general anesthesia.
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Affiliation(s)
- P Sepúlveda
- Servicio de Anestesiología y Dolor, Hospital Base San José Osorno, Osorno, Chile.
| | - I Acosta
- Departamento de Neurología, Clínica Alemana Santiago, Vitacura, Santiago, Chile
| | - A Hoppe
- Departamento de Neurología, Clínica Alemana Santiago, Vitacura, Santiago, Chile
| | - F A Lobo
- Centro Hospitalar do Porto, Hospital Geral de Santo António, Porto, Portugal
| | - E Carrasco
- Universidad del Desarrollo, Facultad de Medicina Clínica Alemana
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3
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Sepúlveda P, Acosta I, Hoppe A, Lobo FA, Carrasco E. Influence of rate of administration on the mechanism behind propofol induced loss of consciousness. Rev Esp Anestesiol Reanim (Engl Ed) 2021; 68:245-251. [PMID: 34140123 DOI: 10.1016/j.redar.2020.05.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/26/2020] [Indexed: 05/20/2023]
Abstract
BACKGROUND Propofol effect-site time course models included in TCI systems have been under discussion. We hypothesized that the rate of administration is a major contributor affecting the construction of a useful effect-site model: yielding different plasmatic concentrations, loss of consciousness may occur by different mechanisms more complex than the pharmacological effect-site. METHODOLOGY ASA III patients were randomized in two groups: rapid induction (RI) received TCI of propofol effect-site (CeCALC) 5.4 μg/mL (modified Marsh model), and slow induction (SI) propofol infusion of 10 mg/kg/hour. A neurologist, blinded to induction method, performed neurological assessments using the FOUR score until the loss of consciousness (LOC). At LOC, the presence of brain stem reflexes, EEG index (PSI) and infusion time/mass of drug were registered. Fisher's exact test was used to describe differences between brain stem reflexes and respiration components of the FOUR score and CeCALC for 4 propofo models at LOC time. RESULTS 16 patients divided in two groups were included. All patient in SI had brainstem reflexes free at LOC. In the RI, all patients had brain stem reflexes abolished and 1 patient had B and R of 4 points in the FOUR score (brain stem reflexes unaffected; P < .001). CeCALC at LOC time were contradictory at LOC in both groups and using 4 different Pk/Pd models. CONCLUSIONS Depending of the infusion rate, propofol CeCALC at LOC calculated by different Pk/Pd models could be the source of confuse data to be used to guide the state of general anesthesia.
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Affiliation(s)
- P Sepúlveda
- Servicio de Anestesiología y Dolor, Hospital Base San José Osorno, Osorno, Chile.
| | - I Acosta
- Departamento de Neurología, Clínica Alemana Santiago, Vitacura, Santiago, Chile
| | - A Hoppe
- Departamento de Neurología, Clínica Alemana Santiago, Vitacura, Santiago, Chile
| | - F A Lobo
- Centro Hospitalar do Porto, Hospital Geral de Santo António, Porto, Portugal
| | - E Carrasco
- Universidad del Desarrollo, Facultad de Medicina Clínica Alemana
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4
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Kratzsch J, Kolm R, Hoppe A, Dilba P, Körner A, Wirkner K, Hiemisch A, Kiess W. Reference ranges for the Elecsys® IGF-1 and IGFBP-3 immunoassays: Effects of age, gender and pubertal stage. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Peeß C, Vallribera DC, Gerg M, Kowalewsky F, Scholz C, Bocola M, Von Proff L, Goller S, Klöppel-Swarlik H, Hoppe A, Schräml M. SlyD: A novel epitope-presenting thermostable scaffold for the development of highly specific IGF-1/-2 antibodies. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.737] [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: 10/26/2022]
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6
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Drouet M, Moreau AS, Hoppe A. [Eight-year-old children with numerous food allergy inducer by passive exposition to cannabis]. Rev Pneumol Clin 2017; 73:323-325. [PMID: 29169678 DOI: 10.1016/j.pneumo.2017.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 06/07/2023]
Abstract
We present a clinical case of a 8 old children with numerous food allergy inducer pas passive exposition to cannabis.
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Affiliation(s)
- M Drouet
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU d'Angers, 49000 Anger, France.
| | - A S Moreau
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU d'Angers, 49000 Anger, France
| | - A Hoppe
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU d'Angers, 49000 Anger, France
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7
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Drouet M, Hoppe A, Moreau AS, Bonneau JC, Leclere JM, Le Sellin J. [Cannabis and crossed allergy with food]. Rev Pneumol Clin 2017; 73:290-293. [PMID: 29122396 DOI: 10.1016/j.pneumo.2017.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 06/07/2023]
Abstract
Cannabis use has increased over the last decade. At the same time, we see cannabis allergies appearing, ranging from simple rhinoconjunctivitis to anaphylactic-type reactions, some of which are severe since fatal cases have been described, but we also see allergic-induced food allergies cross-linked in the family of lipid transfer proteins (LTP). Indeed, cannabis contains an LTP called Can s 3. The LT are very widespread in the vegetable kingdom and are present in many vegetables and fruits. LTPs have a similar chemical structure and therefore cross-allergy is common. Thus, by becoming aware of the LTP of cannabis, it is possible to become allergic by a mechanism of cross-allergy to the other LTPs present in fruits and vegetables. This syndrome is referred to as cannabis-fruit-vegetable syndrome.
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Affiliation(s)
- M Drouet
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU, 4, rue Larrey, 49933 Angers cedex 09, France.
| | - A Hoppe
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU, 4, rue Larrey, 49933 Angers cedex 09, France
| | - A S Moreau
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU, 4, rue Larrey, 49933 Angers cedex 09, France
| | - J C Bonneau
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU, 4, rue Larrey, 49933 Angers cedex 09, France
| | - J M Leclere
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU, 4, rue Larrey, 49933 Angers cedex 09, France
| | - J Le Sellin
- Unité d'allergologie générale, département de pneumologie, oncologie thoracique et allergologie, CHU, 4, rue Larrey, 49933 Angers cedex 09, France
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8
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Habib M, Welikala R, Hoppe A, Owen C, Rudnicka A, Barman S. Detection of microaneurysms in retinal images using an ensemble classifier. Informatics in Medicine Unlocked 2017. [DOI: 10.1016/j.imu.2017.05.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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9
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Worringen U, Hoppe A, Derra C, Kalwa M, Brüggemann S. [Benefits of the Curriculum "Social Medicine for the Rehabilitation Team" in Rehabilitation Practise]. REHABILITATION 2016; 55:238-47. [PMID: 27529301 DOI: 10.1055/s-0042-107100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The Federal German Pension Insurance in cooperation with professional organisations developed a curriculum for further socio-medical education of psychologists/psychotherapists, occupational therapists, physiotherapists, sports therapists and social workers/social pedagogues involved in medical rehabilitation. This curriculum aims to improve the professional competence of the therapeutic groups named above with regards to their contributions to the socio-medical capacity evaluation and related communication within the rehabilitation team. The curriculum was implemented for the first time in 2013. Using the results of the usibility evaluation the continued education concept was revised and manualised. The manual allows for a wide dissemination of the education concept.
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Affiliation(s)
| | - A Hoppe
- Deutsche Rentenversicherung Bund, Berlin
| | - C Derra
- Deutsche Rentenversicherung Bund, Berlin
| | - M Kalwa
- Deutsche Rentenversicherung Bund, Berlin
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10
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Hoppe A. [Symposium "Nutrition in Medical Rehabilitation", Held February 26-27, 2016 in Erkner]. REHABILITATION 2016; 55:200-1. [PMID: 27284734 DOI: 10.1055/s-0042-108367] [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: 10/21/2022]
Affiliation(s)
- A Hoppe
- Deutsche Rentenversicherung Bund, Berlin
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11
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Vicuña M, González S, Olavarría V, Brunser A, Hoppe A, Díaz V, Cárcamo D, López J, Valenzuela M, Muñoz-Venturelli P, Illanes S, Lavados P. Increasing frequency of intravenous thrombolysis use in acute ischemic stroke over 17years of experience in a single academic medical center. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1474] [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: 12/01/2022]
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12
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Fernandez J, Gonzalez S, Vicuna P, Brunser A, Lavados P, Hoppe A, Diaz V. Cervical arterial dissection registry (disecas). Long term recurrence and functional outcome. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1337] [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: 11/28/2022]
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13
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Olavarria V, Brunser A, Herrero D, Cárcamo D, López J, Valenzuela M, Hoppe A, Sujima E, Mansilla E, Illanes S, Reccius A, Díaz V, Lavados P. Clínica Alemana de Santiago cerebrovascular disease registry (Recca): a single center seventeen-year prospective project. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1420] [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: 12/01/2022]
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14
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Brunser A, Lavados P, Cárcamo D, Hoppe A, Olavarría V, Sujima E, Herrero D, López J. Role of transcranial Doppler in a multimodal imaging stroke protocol for the evaluation of hyperacute stroke: a prospective observational study. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1306] [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: 10/22/2022]
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15
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Diaz V, Hoppe A, Brunser A, Sujima E, Olavarria V, Valenzuela M, Lopez M, Carcamo D, Herrero D, Lavados P. Etiology and functional outcome by gender in acute ischemic stroke in a tertiary care hospital: clinica Alemana stroke registry: 1997-2014. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1329] [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: 11/26/2022]
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16
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Cattalini JP, Hoppe A, Pishbin F, Roether J, Boccaccini AR, Lucangioli S, Mouriño V. Novel nanocomposite biomaterials with controlled copper/calcium release capability for bone tissue engineering multifunctional scaffolds. J R Soc Interface 2015; 12:0509. [PMID: 26269233 PMCID: PMC4614462 DOI: 10.1098/rsif.2015.0509] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 07/20/2015] [Indexed: 01/21/2023] Open
Abstract
This work aimed to develop novel composite biomaterials for bone tissue engineering (BTE) made of bioactive glass nanoparticles (Nbg) and alginate cross-linked with Cu(2+) or Ca(2+) (AlgNbgCu, AlgNbgCa, respectively). Two-dimensional scaffolds were prepared and the nanocomposite biomaterials were characterized in terms of morphology, mechanical strength, bioactivity, biodegradability, swelling capacity, release profile of the cross-linking cations and angiogenic properties. It was found that both Cu(2+) and Ca(2+) are released in a controlled and sustained manner with no burst release observed. Finally, in vitro results indicated that the bioactive ions released from both nanocomposite biomaterials were able to stimulate the differentiation of rat bone marrow-derived mesenchymal stem cells towards the osteogenic lineage. In addition, the typical endothelial cell property of forming tubes in Matrigel was observed for human umbilical vein endothelial cells when in contact with the novel biomaterials, particularly AlgNbgCu, which indicates their angiogenic properties. Hence, novel nanocomposite biomaterials made of Nbg and alginate cross-linked with Cu(2+) or Ca(2+) were developed with potential applications for preparation of multifunctional scaffolds for BTE.
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Affiliation(s)
- J P Cattalini
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín 6th floor, PC1113, Buenos Aires, Argentina
| | - A Hoppe
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen 91058, Germany
| | - F Pishbin
- Department of Materials, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - J Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen 91058, Germany
| | - A R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen 91058, Germany
| | - S Lucangioli
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín 6th floor, PC1113, Buenos Aires, Argentina National Research Council (CONICET), Buenos Aires, Argentina
| | - V Mouriño
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín 6th floor, PC1113, Buenos Aires, Argentina National Research Council (CONICET), Buenos Aires, Argentina
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Huebner J, Ebel M, Muenstedt K, Micke O, Prott FJ, Muecke R, Hoppe A. A lecture program on complementary and alternative medicine for cancer patients--evaluation of the pilot phase. J Cancer Educ 2015; 30:340-343. [PMID: 25056420 DOI: 10.1007/s13187-014-0706-y] [Citation(s) in RCA: 7] [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: 06/03/2023]
Abstract
About half of all patients with cancer use complementary or alternative medicine (CAM). In 2013, we started a lecture program for patients, followed by evidence-based recommendations on counseling on CAM. These recommendations have been published before by this working group. The aim of the program is to provide scientific facts on the most often used CAM methods in standardized presentations which help patients discuss the topic with their oncologists and support shared decision making. The article presents the evaluation of the pilot phase. Participants received a standardized questionnaire before the start of the lecture. The questionnaire comprises four parts: demographic data, data concerning experience with CAM, satisfaction with the lecture, and needs for further information on CAM. In 2013, seven lectures on CAM were given in cooperation with regional branches of the German Cancer Society in several German states. Four hundred sixty patients and relatives took part (75% females and 16% males). Forty-eight percent formerly had used CAM. Most often named sources of information on CAM were print media (48%) and the Internet (37%). Most participants rated additional written information valuable. About one third would like to have an individual consultation concerning CAM. A standardized presentation of evidence on CAM methods most often used, together with recommendations on the self-management of symptoms, is highly appreciated. The concept of a highly interactive lecture comprising is feasible and if presented in lay terminology, adequate. In order to give additional support on the topic, written information should be provided as the first step.
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Affiliation(s)
- J Huebner
- Working Group Integrative Oncology, Dr. Senckenberg Chronomedical Institute, J.W. Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany,
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Welikala RA, Fraz MM, Dehmeshki J, Hoppe A, Tah V, Mann S, Williamson TH, Barman SA. Genetic algorithm based feature selection combined with dual classification for the automated detection of proliferative diabetic retinopathy. Comput Med Imaging Graph 2015; 43:64-77. [PMID: 25841182 DOI: 10.1016/j.compmedimag.2015.03.003] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 03/03/2015] [Accepted: 03/11/2015] [Indexed: 11/28/2022]
Abstract
Proliferative diabetic retinopathy (PDR) is a condition that carries a high risk of severe visual impairment. The hallmark of PDR is the growth of abnormal new vessels. In this paper, an automated method for the detection of new vessels from retinal images is presented. This method is based on a dual classification approach. Two vessel segmentation approaches are applied to create two separate binary vessel map which each hold vital information. Local morphology features are measured from each binary vessel map to produce two separate 4-D feature vectors. Independent classification is performed for each feature vector using a support vector machine (SVM) classifier. The system then combines these individual outcomes to produce a final decision. This is followed by the creation of additional features to generate 21-D feature vectors, which feed into a genetic algorithm based feature selection approach with the objective of finding feature subsets that improve the performance of the classification. Sensitivity and specificity results using a dataset of 60 images are 0.9138 and 0.9600, respectively, on a per patch basis and 1.000 and 0.975, respectively, on a per image basis.
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Affiliation(s)
- R A Welikala
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom.
| | - M M Fraz
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom.
| | - J Dehmeshki
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom.
| | - A Hoppe
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom.
| | - V Tah
- Medical Retina, Oxford Eye Hospital, Oxford, United Kingdom.
| | - S Mann
- Ophthalmology Department, St Thomas' Hospital, London, United Kingdom.
| | - T H Williamson
- Ophthalmology Department, St Thomas' Hospital, London, United Kingdom.
| | - S A Barman
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom.
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Ludwig G, Rüffer T, Hoppe A, Walther T, Lang H, Ebbinghaus SG, Steinborn D. Lithiated sulfoxides: α-sulfinyl functionalized carbanions. Dalton Trans 2015; 44:5323-30. [DOI: 10.1039/c4dt02238f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lithiated sulfoxides of the type [Li2{CRR′S(O)Ar}2(TMEDA)2], their molecular structures, and diastereoselective C–C bond formation reactions with benzaldehyde and benzophenone are presented.
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Affiliation(s)
- Gerd Ludwig
- Institute of Chemistry
- Martin Luther University Halle-Wittenberg
- D-06120 Halle
- Germany
| | - Tobias Rüffer
- Institute of Chemistry
- Chemnitz University of Technology
- D-09107 Chemnitz
- Germany
| | - André Hoppe
- Institute of Chemistry
- Martin Luther University Halle-Wittenberg
- D-06120 Halle
- Germany
| | - Till Walther
- Institute of Chemistry
- Martin Luther University Halle-Wittenberg
- D-06120 Halle
- Germany
| | - Heinrich Lang
- Institute of Chemistry
- Chemnitz University of Technology
- D-09107 Chemnitz
- Germany
| | - Stefan G. Ebbinghaus
- Institute of Chemistry
- Martin Luther University Halle-Wittenberg
- D-06120 Halle
- Germany
| | - Dirk Steinborn
- Institute of Chemistry
- Martin Luther University Halle-Wittenberg
- D-06120 Halle
- Germany
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20
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Blachnik R, Hoppe A, Rabe U, Wickel U. Käfigverbindungen im System P4S3-As4S3 / Cage Compounds in the System P4S3-AS4S3. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1981-1202] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Mixtures of P4S3 and As4S3 were investigated. The system reveals a broad metastable region of solid solubility. At the composition PAs3S3 new structures are obtainable after various thermal treatments. In the mixtures six different cage molecules (P4-xAsxS3 (x=1−3)) were found. PAs3S3 is the most stable of the mixed cages. At higher temperature a plastic-crystalline modification, at the composition PAs3S3 two further high temperature modifications are observed. NMR and mass spectra, and d-values of the modifications are reported, and the high temperature behaviour of all mixed cages is described.
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Affiliation(s)
- R. Blachnik
- Anorganische Chemie FB 8, Universität Siegen, Adolf-Reichwein-Straße, D-5900 Siegen 21
| | - A. Hoppe
- Anorganische Chemie FB 8, Universität Siegen, Adolf-Reichwein-Straße, D-5900 Siegen 21
| | - U. Rabe
- Anorganische Chemie FB 8, Universität Siegen, Adolf-Reichwein-Straße, D-5900 Siegen 21
| | - U. Wickel
- Anorganische Chemie FB 8, Universität Siegen, Adolf-Reichwein-Straße, D-5900 Siegen 21
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21
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Welikala RA, Dehmeshki J, Hoppe A, Tah V, Mann S, Williamson TH, Barman SA. Automated detection of proliferative diabetic retinopathy using a modified line operator and dual classification. Comput Methods Programs Biomed 2014; 114:247-261. [PMID: 24636803 DOI: 10.1016/j.cmpb.2014.02.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 01/14/2014] [Accepted: 02/14/2014] [Indexed: 06/03/2023]
Abstract
Proliferative diabetic retinopathy (PDR) is a condition that carries a high risk of severe visual impairment. The hallmark of PDR is neovascularisation, the growth of abnormal new vessels. This paper describes an automated method for the detection of new vessels in retinal images. Two vessel segmentation approaches are applied, using the standard line operator and a novel modified line operator. The latter is designed to reduce false responses to non-vessel edges. Both generated binary vessel maps hold vital information which must be processed separately. This is achieved with a dual classification system. Local morphology features are measured from each binary vessel map to produce two separate feature sets. Independent classification is performed for each feature set using a support vector machine (SVM) classifier. The system then combines these individual classification outcomes to produce a final decision. Sensitivity and specificity results using a dataset of 60 images are 0.862 and 0.944 respectively on a per patch basis and 1.00 and 0.90 respectively on a per image basis.
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Affiliation(s)
- R A Welikala
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom.
| | - J Dehmeshki
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom
| | - A Hoppe
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom
| | - V Tah
- Medical Retina, Oxford Eye Hospital, Oxford, United Kingdom
| | - S Mann
- Ophthalmology Department, St. Thomas' Hospital, London, United Kingdom
| | - T H Williamson
- Ophthalmology Department, St. Thomas' Hospital, London, United Kingdom
| | - S A Barman
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom
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Fraz M, Remagnino P, Hoppe A, Rudnicka A, Owen C, Whincup P, Barman S. Quantification of blood vessel calibre in retinal images of multi-ethnic school children using a model based approach. Comput Med Imaging Graph 2013; 37:48-60. [DOI: 10.1016/j.compmedimag.2013.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 01/15/2013] [Accepted: 01/18/2013] [Indexed: 10/27/2022]
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Fraz MM, Barman SA, Remagnino P, Hoppe A, Basit A, Uyyanonvara B, Rudnicka AR, Owen CG. An approach to localize the retinal blood vessels using bit planes and centerline detection. Comput Methods Programs Biomed 2012; 108:600-616. [PMID: 21963241 DOI: 10.1016/j.cmpb.2011.08.009] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 07/25/2011] [Accepted: 08/29/2011] [Indexed: 05/31/2023]
Abstract
The change in morphology, diameter, branching pattern or tortuosity of retinal blood vessels is an important indicator of various clinical disorders of the eye and the body. This paper reports an automated method for segmentation of blood vessels in retinal images. A unique combination of techniques for vessel centerlines detection and morphological bit plane slicing is presented to extract the blood vessel tree from the retinal images. The centerlines are extracted by using the first order derivative of a Gaussian filter in four orientations and then evaluation of derivative signs and average derivative values is performed. Mathematical morphology has emerged as a proficient technique for quantifying the blood vessels in the retina. The shape and orientation map of blood vessels is obtained by applying a multidirectional morphological top-hat operator with a linear structuring element followed by bit plane slicing of the vessel enhanced grayscale image. The centerlines are combined with these maps to obtain the segmented vessel tree. The methodology is tested on three publicly available databases DRIVE, STARE and MESSIDOR. The results demonstrate that the performance of the proposed algorithm is comparable with state of the art techniques in terms of accuracy, sensitivity and specificity.
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Affiliation(s)
- M M Fraz
- Digital Imaging Research Centre, Faculty of Science and Engineering, Kingston University London, London, United Kingdom.
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Fraz MM, Remagnino P, Hoppe A, Uyyanonvara B, Rudnicka AR, Owen CG, Barman SA. Blood vessel segmentation methodologies in retinal images--a survey. Comput Methods Programs Biomed 2012; 108:407-33. [PMID: 22525589 DOI: 10.1016/j.cmpb.2012.03.009] [Citation(s) in RCA: 257] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 03/05/2012] [Accepted: 03/24/2012] [Indexed: 05/20/2023]
Abstract
Retinal vessel segmentation algorithms are a fundamental component of automatic retinal disease screening systems. This work examines the blood vessel segmentation methodologies in two dimensional retinal images acquired from a fundus camera and a survey of techniques is presented. The aim of this paper is to review, analyze and categorize the retinal vessel extraction algorithms, techniques and methodologies, giving a brief description, highlighting the key points and the performance measures. We intend to give the reader a framework for the existing research; to introduce the range of retinal vessel segmentation algorithms; to discuss the current trends and future directions and summarize the open problems. The performance of algorithms is compared and analyzed on two publicly available databases (DRIVE and STARE) of retinal images using a number of measures which include accuracy, true positive rate, false positive rate, sensitivity, specificity and area under receiver operating characteristic (ROC) curve.
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Affiliation(s)
- M M Fraz
- Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University London, London, United Kingdom.
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25
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Huber C, Hoppe A, Agorastos A, Andresen B, Naber D, Schroeder K. Are Ratings on the Positive and Negative Syndrome Scale for Schizophrenia Biased by Personality Traits? Pharmacopsychiatry 2012; 45:156-61. [DOI: 10.1055/s-0031-1298022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- C. Huber
- Department of Psychiatry and Psychotherapy, Centre for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - A. Hoppe
- Department of Psychiatry and Psychotherapy, Centre for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - A. Agorastos
- Department of Psychiatry and Psychotherapy, Centre for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - B. Andresen
- Department of Psychiatry and Psychotherapy, Centre for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - D. Naber
- Department of Psychiatry and Psychotherapy, Centre for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - K. Schroeder
- Department of Psychiatry and Psychotherapy, Centre for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Olavarria VV, Delgado I, Hoppe A, Brunser A, Carcamo D, Diaz-Tapia V, Lavados PM. Validity of the NIHSS in predicting arterial occlusion in cerebral infarction is time-dependent. Neurology 2010; 76:62-8. [DOI: 10.1212/wnl.0b013e318203e977] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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27
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Linde K, Streng A, Reitmayr S, Hoppe A, Brinkhaus B, Becker-Witt C, Wagenpfeil S, Weidenhammer W, Willich SN, Melchart D. Efficacy of acupuncture in patients with migraine - the Acupuncture Randomised Trials (ART). ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.2042-7166.2003.tb04031.x] [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: 11/29/2022]
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Affiliation(s)
- G.R. Woodburn
- a Department of Science , Blaine High School , Blaine, MN 55434, USA
| | - N.R. Lien
- b Department of Chemistry , Whitman College , Walla Walla, WA 99362, USA
| | - A. Hoppe
- c College of Engineering, University of Iowa , Iowa City, IA 52242, USA
| | - Y. Jahng
- d School of Pharmacy, Yeungnam University , Kyongsan, 712-749, South Korea
| | - J.R. Telford
- e College of Liberal Arts and Sciences, Maryville University , St. Louis, MO 63141, USA
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Graf N, Hoppe A, Georgiadi E, Belleman R, Desmedt C, Dionysiou D, Erdt M, Jacques J, Kolokotroni E, Lunzer A, Tsiknakis M, Stamatakos G. ‘In Silico’ Oncology for Clinical Decision Making in the Context of Nephroblastoma. Klin Padiatr 2009; 221:141-9. [DOI: 10.1055/s-0029-1216368] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Terzaki M, Kusche D, Kallerhoff M, Girona-Johannkemper M, Berg E, Müller W, Hoppe A. Auf dem Weg zur „Beckenbodenklinik“ – das interdisziplinäre Modell am Prosper-Hospital Recklinghausen. Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-2008-1075762] [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: 10/21/2022] Open
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31
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Graf N, Desmedt C, Buffa F, Kafetzopoulos D, Forgó N, Kollek R, Hoppe A, Stamatakos G, Tsiknakis M. Post-genomic clinical trials: the perspective of ACGT. Ecancermedicalscience 2008; 2:66. [PMID: 22275963 PMCID: PMC3234044 DOI: 10.3332/ecms.2008.66] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2007] [Indexed: 01/02/2023] Open
Affiliation(s)
- N Graf
- University Hospital of Saarland Paediatric Haematology and Oncology, D-66421 Homburg, Germany.
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Graf N, Desmedt C, Buffa F, Kafetzopoulos D, Forgo N, Kollek R, Hoppe A, Stamatakos G, Tsiknakis M. Post-genomic clinical trials: the perspective of ACGT. Ecancermedicalscience 2008. [DOI: 10.3332/ecancer.2008.66] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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33
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Fangmann J, Wegmann C, Hoppe A, Martin P, Sack U, Harms J, Faber S, Emmrich F. Characterization of Dendritic Cell Subsets in Patients Undergoing Renal Transplantation. Transplant Proc 2007; 39:3101-4. [DOI: 10.1016/j.transproceed.2007.05.088] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2007] [Accepted: 05/23/2007] [Indexed: 01/21/2023]
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34
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Weidenhammer W, Streng A, Linde K, Hoppe A, Melchart D. Acupuncture for chronic pain within the research program of 10 German Health Insurance Funds—Basic results from an observational study. Complement Ther Med 2007; 15:238-46. [DOI: 10.1016/j.ctim.2006.09.005] [Citation(s) in RCA: 25] [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] [Received: 04/21/2006] [Revised: 09/13/2006] [Accepted: 09/19/2006] [Indexed: 12/21/2022] Open
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Graf N, Desmedt C, Hoppe A, Tsiknakis M, Dionysiou D, Stamatakos G. 398 POSTER Clinical requirements of “In Silico Oncology” as part of the integrated project ACGT (Advancing Clinico-Genomic Trials on Cancer). EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70416-0] [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: 11/26/2022] Open
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36
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Lamelas MT, Marinoni O, Hoppe A, de la Riva J. Doline probability map using logistic regression and GIS technology in the central Ebro Basin (Spain). ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s00254-007-0895-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Lamelas MT, Marinoni O, Hoppe A, de la Riva J. Groundwater vulnerability map for the Ebro alluvial aquifer between Jalón and Ginel tributaries (Spain). ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s00254-007-0699-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
OBJECTIVE To investigate characteristics and outcomes of patients undergoing acupuncture treatment for osteoarthritic pain under conditions of routine care in the framework of statutory health insurance in Germany. METHODS Patients with chronic pain due to osteoarthritis (ICD-10 diagnoses M15 to M19) treated with acupuncture as the leading form of therapy were included in an observational study. Detailed questionnaires including instruments to measure pain intensity (numerical rating scales from 0 to 10), disability (Pain Disability Index) and quality of life (SF-36) were filled in before treatment, after treatment and at 6 months. Patients suffering from osteoarthritis of the knee and hip also filled in the Western Ontario and McMaster Universities (WOMAC) Osteoarthritis Index questionnaire. RESULTS A total of 736 patients were included in the main analysis. Seventy (10%) patients and 278 (38%) patients, respectively, suffered exclusively from primary osteoarthritis of the hip or knee, 239 (33%) from another type of osteoarthritis and 149 (20%) had more than one affected joint. On average, patients received 8.7 +/- 3.1 acupuncture treatments. Statistically significant and clinically relevant improvements were seen in all subgroups both after treatment and at 6 months in all major outcome measures. In patients with osteoarthritis of the hip, the WOMAC sum score was 47.9 +/- 20.7 at baseline, 34.8 +/- 20.0 after treatment and 33.1 +/- 22.2 at 6 months. The respective values in patients with osteoarthritis of the knee were 51.7 +/- 20.9, 34.1 +/- 23.3 and 34.6 +/- 25.1. CONCLUSIONS In this study, patients with chronic pain due to osteoarthritis reported clinically relevant improvements after acupuncture treatment. Due to the uncontrolled design and the high proportion of patients lost to follow-up, the study findings must be interpreted cautiously.
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Affiliation(s)
- K Linde
- Department of Internal Medicine II, Technische Universität München, Kaiserstrasse 9, 80801 Munich, Germany.
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39
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Chatelut E, Séronie-Vivien S, Thomas F, Hoppe A, Delord JP, Gladieff L, Dalenc F, Bugat R. Cystatin C as a new covariate to predict the elimination of drugs: Application to carboplatin and topotecan. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2029] [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: 11/20/2022] Open
Affiliation(s)
| | | | - F. Thomas
- Inst Claudius-Regaud, Toulouse, France
| | - A. Hoppe
- Inst Claudius-Regaud, Toulouse, France
| | | | | | - F. Dalenc
- Inst Claudius-Regaud, Toulouse, France
| | - R. Bugat
- Inst Claudius-Regaud, Toulouse, France
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Weidenhammer W, Streng A, Jürgens S, Hoppe A, Linde K, Melchart D. Aufbau, Realisierung und Datenübersicht einer Beobachtungsstudie im Rahmen des Programms zur Evaluation der Patientenversorgung mit Akupunktur (PEP-AK) des Modellvorhabens der Ersatzkassen. Gesundheitswesen 2005; 67:264-73. [PMID: 15856386 DOI: 10.1055/s-2005-857985] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 10/25/2022]
Abstract
This paper describes the concept and realization of a nation-wide observational study which is part of the patient care evaluation programme on acupuncture as part of a model project of German statutory insurance bodies. The study aimed describing medical care with acupuncture to estimate the incidence of adverse reactions as well as the treatment effects of acupuncture in chronically ill patients with headache, low back pain or osteoarthritic pain. It was also intended to analyse relations between treatment effects and specialties of the treating acupuncturists. During the two-year period of report 9,918 acupuncturists took part in the study documenting 503,397 cases. A more comprehensive documentation is available for a sample of 10,366 patients with complete longitudinal data of 6,140 patients. The difficulties with data management and sampling technique are presented with reference to restricted capacities for monitoring. Furthermore the question of generalising of the results is discussed. There were differences in some respects (for example, frequencies of different indications) between the patient sample and the population of all patients included in the project. Patients also differed slightly with respect to the completeness of the longitudinal documentation. The results indicated that we cannot claim global representativeness for the sample-based findings, but there is no reason to assume a "positive" selection.
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Affiliation(s)
- W Weidenhammer
- Zentrum für naturheilkundliche Forschung, II. Med. Klinik und Poliklinik, TU München.
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Petershofen EK, Doescher A, Harms T, Hoppe A, Grote C, Gnoth S, Gebauer W, Schunter F. Alloimmunthrombozytopenie und Thrombozytensubstitution: Daten der Oldenburger Versorgungsstudie (seit 2000). Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2003-818129] [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: 10/20/2022]
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42
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Linde K, Streng A, Reitmayr S, Hoppe A, Brinkhaus B, Becker-Witt C, Wagenpfeil S, Weidenhammer W, Willich SN, Melchart D. S16.2: Efficacy of acupuncture in patients with migraine - the Acupuncture Randomised Trials (ART). Biom J 2004. [DOI: 10.1002/bimj.200490236] [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: 11/07/2022]
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43
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Dubaniewicz A, Hoppe A. The spontaneous and stimulated nitroblue tetrazolium (NBT) tests in mononuclear cells of patients with tuberculosis. Rocz Akad Med Bialymst 2004; 49:252-5. [PMID: 15631352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
PURPOSE The aim of this study was to evaluate the ability of the NBT reduction by non- and BCG-stimulated monocytes isolated from peripheral blood persons with pulmonary tuberculosis (TB) before treatment, after two-month antituberculosis therapy and in an inactive stage of this disease. MATERIAL AND METHODS The spontaneous and induced NBT tests were done in 24 healthy individuals and 59 patients with pulmonary tuberculosis: 33 before antituberculosis treatment and 26 with inactive stage of TB. Mononuclear cells were isolated from peripheral blood by the Bøyum method and identified by histochemical assay. The abilities of non- and BCG-stimulated monocytes of NBT reduction were estimated by the method according to Park with Szczylik modification. RESULTS In an active state of TB and after 2 months treatment, the non- and BCG-stimulated monocytes capacity to reduce NBT was found to be significantly increased in comparison to controls. The NBT test parameters in the absence of cell stimulation and after administration of BCG were comparable in active TB and after two-month treatment. In an inactive TB, the ability of NBT reduction by non- and BCG-stimulated monocytes was comparable to the controls. The stimulation of mononuclear cells accompanied by the significantly higher capacity of monocytes to reduce NBT in controls and in TB patients with post-tuberculous changes in the lungs. CONCLUSIONS These results of the spontaneous and induced NBT tests adequately reflect the status of the host's specific reactivity during tuberculosis and can be a simple, inexpensive and useful method for monitoring antituberculosis treatment.
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Affiliation(s)
- A Dubaniewicz
- Department of Pathophysiology, Medical University of Gdańsk, Poland.
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44
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Abstract
BACKGROUND The human leucocyte antigen (HLA) system plays an important role in the modulation of the immune response. An association between HLA and pulmonary tuberculosis (TB) has been examined in several populations but the results have been inconsistent. The aim of this study was to evaluate the correlation of DQB1 alleles with TB patients and healthy controls in the same ethnic group in Poland. METHOD The DQB1 alleles of 38 patients with TB and 58 healthy university staff volunteers were determined by a PCR-SSP low resolution method. RESULTS The DQB1*05 allele occurred more frequently (p adjusted for multiple comparison=0.002, OR=2.84, 95% CI 1.57 to 5.15) and the DQB1*02 allele occurred less frequently (p=0.01, OR=0.39, 95% CI 0.21 to 0.71) in patients with TB than in controls. The occurrence of DQB1*03,*04,*06 alleles was similar in the two populations. CONCLUSIONS The occurrence of specific DQB1 alleles may be linked to susceptibility/resistance to tuberculosis.
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Affiliation(s)
- A Dubaniewicz
- Department of Pathophysiology, Medical University of Gdańsk, Poland.
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45
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Melchart D, Linde K, Streng A, Reitmayr S, Hoppe A, Brinkhaus B, Becker-Witt C, Wagenpfeil S, Pfaffenrath V, Hammes M, Willich SN, Weidenhammer W. Acupuncture Randomized Trials (ART) in patients with migraine or tension-type headache--design and protocols. Complement Med Res 2003; 10:179-84. [PMID: 12972722 DOI: 10.1159/000073473] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVE We report the design and essentials of the protocols of two Acupuncture Randomized Trials (ART) investigating whether acupuncture is more efficacious than no treatment and minimal acupuncture in the interval treatment of migraine and tension-type headache. DESIGN Randomized controlled multicenter trials with three treatment arms and a total observation period of 28 weeks. SETTING 30 practitioners and outpatient units in Germany specialized in acupuncture treatment. PATIENTS Per study 300 patients with migraine and episodic or chronic tension-type headache, respectively (diagnosis according to the criteria of the International Headache Society). INTERVENTIONS Patients are randomly assigned to receive either (1) semi-standardized acupuncture (150 patients), (2) standardized minimal acupuncture (75 patients), or (3) no interval treatment for 12 weeks followed by semi-standardized acupuncture (75 patients, waiting list control). Acupuncture treatment consists of 12 sessions per patient over a period of 8 weeks. MAIN OUTCOME MEASURE Main outcome measure in the migraine trial is the difference between the number of days with headache of moderate or severe intensity during the 4 weeks before randomization and weeks 9 to 12 after randomization. In the study on tension-type headache the main outcome measure is similar to that described above, but for the number of headache days regardless of intensity. OUTLOOK The results of these two studies (available in 2004) will provide health care providers and policy makers with the information needed to make scientifically sound assessments of acupuncture therapy.
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Affiliation(s)
- D Melchart
- Zentrum für naturheilkundliche Forschung, II. Medizinische Klinik und Poliklinik, TU München, Germany
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Fornazzari L, Cumsille F, Quevedo F, Quiroga P, Rioseco P, Klaasen G, Martinez CG, Rhode G, Sacks C, Rivera E, Gassic I, Hammersley F, Hoppe A, Arriagada P, Flaskamp R. Spanish validation of the Syndrom Kurztest (SKT). Alzheimer Dis Assoc Disord 2001; 15:211-5. [PMID: 11723372 DOI: 10.1097/00002093-200110000-00007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/26/2022]
Abstract
There is an urgent need in multinational studies for efficient and sensitive tests for the evaluation of dementias. These tests are used to investigate the regional characteristics of dementias, providing possible insight into the different etiologies of the disorders. These tests are also utilized to assess the outcome of treatment interventions at multinational levels. We validated and standardized the Syndrom Kurztest, a brief European neuropsychological test, in a population of elderly Chileans, possessing high levels of illiteracy. In our sample, the SKT was found to be an effective instrument for the diagnosis of dementias, and for differentiating mild-moderate from severe degrees of the disease. There was a good correlation between the scores on the SKT and the age of the participants, but the gender and the years of schooling had no effect. The test is a useful contribution to the study of dementias, found in the aging developing world, particularly because it can be used in illiterate populations.
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Affiliation(s)
- L Fornazzari
- University of Toronto-Centre for Addiction and Mental Health.
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Hoppe A, Denneberg T. Cystinuria in the dog: clinical studies during 14 years of medical treatment. J Vet Intern Med 2001; 15:361-7. [PMID: 11467594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
The purpose of this study was to summarize 14 years of clinical experience with medical treatment of 88 cystinuric dogs. Of special interest was evaluation of recurrence rate of cystine uroliths and adverse effects during long-term tiopronin treatment. Twenty-six different breeds were recognized, and the most common breeds were Dachshunds, Tibetan Spaniels, and Basset Hounds. In 76 of 88 treated dogs (86%), re-formation of cystine uroliths was prevented. Recurrence rate of cystine uroliths changed from 7 months before to 18 months during tiopronin treatment. On 28 occasions, bladder stones were found, and in about 60% of the dogs, the uroliths dissolved. Quantitative measurement of the urinary excretion of cystine showed a significantly (P < .03) higher excretion of cystine in dogs with recurrent urolith formation than in dogs with only 1 urolith episode. Another finding was a significant (P = .02) decrease in urinary cystine excretion in older (>5 years) than in younger (<5 years) dogs. Adverse effects were found in 11 dogs, and the most severe signs were aggressiveness and myopathy. All signs disappeared when tiopronin treatment was stopped. In conclusion, this study emphasizes the importance of an individual strategy for lifelong treatment of cystinuria. In addition to increasing water intake, chemical modification of the cysteine molecule into a more soluble form by means of tiopronin is useful. In dogs with re-formed cystine uroliths, dissolution may be induced by increasing the tiopronin dosage to 40 mg/kg body weight per day. In dogs with a low urolith recurrence rate and low urinary cystine excretion, the tiopronin dosage may be decreased or treatment discontinued.
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Affiliation(s)
- A Hoppe
- Department of Small Animal Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala.
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Kmieć Z, Myśliwski A, Wyrzykowska M, Hoppe A. The effects of fasting and refeeding on serum parathormone and calcitonin concentrations in young and old male rats. Horm Metab Res 2001; 33:276-80. [PMID: 11440273 DOI: 10.1055/s-2001-15285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Although fasting and refeeding reveal the existence of age-related changes in carbohydrate and lipid metabolism, the effects of aging on mineral metabolism in refed animals are unknown. We therefore investigated hormonal regulation of calcium metabolism in young (4 months) and old (26 months) male rats fasted for 48 hours and then refed for 4 or 24 hours. Serum concentrations of total and ionized calcium and parathormone were similar in control young and old rats. Serum calcitonin level was higher, and the concentrations of albumin and inorganic phosphate and alkaline phosphatase activity were lower in fed old rats. In young fasted rats, the serum ionized and total calcium was decreased, and phosphate concentration was increased. In old rats, fasting resulted in the increase of serum parathormone level. Fasting reduced serum alkaline phosphatase activity to a similar extent in both age groups. In young rats, refeeding for 24h normalized serum calcium and phosphate levels and alkaline phosphatase activity, and decreased serum concentrations of PTH and calcitonin. In old refed rats, serum calcitonin concentration was raised by 77% compared to fed or fasted animals, whereas parathormone levels were normalized. Our results indicate that old fasted or refed rats maintain normal serum calcium concentration in a different way than young animals, possibly through the increase in serum levels of parathormone and/or calcitonin. Thus, dietary manipulations such as fasting and refeeding constitute an interesting model for the investigation of the effects of aging on the hormonal regulation of serum calcium level.
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Affiliation(s)
- Z Kmieć
- Department of Histology and Immunology, Medical University of Gdansk, Poland.
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Hoppe A, Rybczyńska A. [Calcium receptor (CaR): a new approach to regulation of calcium homeostasis]. Przegl Lek 2001; 57:77-82. [PMID: 10907347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
In recent years the receptor sensing calcium (CaR) has been discovered on the surface of parathyroid cells and some other organs cells which revised our understanding of mechanisms involved in regulation of body calcium balance. It was shown that stimulation of CaR induced by an increase of extracellular ionized calcium concentration resulted in an increase of intracellular calcium and subsequent decrease of parathyroid hormone (PTH) secretion from parathyroid cells. Calcium receptor was also discovered in nephron segments reabsorbing calcium which allowed to understand the mechanisms underlying some inherited disturbances of calcium balance regulation i.e. in familial hypocalciuric hypercalcemia or hypercalciuric hypocalcemia. Investigations on CaR structure revealed the mutations in those inherited syndromes leading to increase or decrease of parathyroid and nephron cells receptor sensitivity to calcium. The description of the receptor properties resulted in development of a new group of compounds called calcimimetics which are more efficient than calcium itself in stimulation of CaR and subsequent decrease of PTH secretion. Calcimimetics in perspective might have a therapeutic application. Under investigation is synthesis of calcilytics, compounds which through an interaction with CaR result in increase of PTH secretion potentially leading to a clinical application.
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Affiliation(s)
- A Hoppe
- Katedra i Zakład Fizjopatologii Akademia Medyczna w Gdańsku.
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