1
|
Hübner L, Mardin CY, Held J, Tappe D, Hammer CM, Bergua A. [Treatment-resistant nodular scleritis]. Ophthalmologie 2023; 120:72-75. [PMID: 35258688 DOI: 10.1007/s00347-022-01597-4] [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] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/25/2022] [Accepted: 02/03/2022] [Indexed: 01/25/2023]
Affiliation(s)
- L Hübner
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Deutschland.
| | - C Y Mardin
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Deutschland
| | - J Held
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU), Erlangen-Nürnberg, Erlangen, Deutschland
| | - D Tappe
- Bernhard-Nocht-Institut für Tropenmedizin, Hamburg, Deutschland
| | - C M Hammer
- Institut für Funktionelle und Klinische Anatomie, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| | - A Bergua
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Deutschland
| |
Collapse
|
2
|
Hübner L, Struffert T, Mardin CY, Engelhorn T, Holbach L, Weller J, Hohberger B, Gusek-Schneider G. [Clinical and sonographic examination findings in patients with carotid-cavernous sinus fistulas]. Ophthalmologe 2021; 118:919-925. [PMID: 33459810 PMCID: PMC8413193 DOI: 10.1007/s00347-020-01310-3] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 11/07/2020] [Accepted: 12/16/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Symptoms and clinical findings in patients with carotid-cavernous fistulas are specific. Nevertheless, they can be very mildly expressed. This study aims to point out the potential diagnostic value of ultrasound of the orbit. METHODS A total of 25 patients with a reliable angiographic diagnosis of a fistula were reviewed retrospectively. We analyzed the symptoms, clinical findings and demonstrability in ultrasound of the orbit. RESULTS The most common clinical findings were nerve palsy, dilation of episcleral vessels and exophthalmos. If an ultrasound had been part of the examination a dilation of the superior ophthalmic vein could be demonstrated in all cases. CONCLUSION The expeditious ultrasound investigation provides valuable information for the diagnosis of red eyes which are resistant to treatment. The examiner has to consider a fistula and perform an ultrasound especially when diplopia has newly occurred. Finally, the expedient neuroimaging can be arranged.
Collapse
Affiliation(s)
- L Hübner
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Erlangen, Deutschland.
| | - T Struffert
- Abteilung für Neuroradiologie, Justus-Liebig-Universität Gießen, Gießen, Deutschland
| | - C Y Mardin
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| | - T Engelhorn
- Abteilung Neuroradiologie, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| | - L Holbach
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| | - J Weller
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| | - B Hohberger
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| | - G Gusek-Schneider
- Universitätsaugenklinik Erlangen, FAU Erlangen-Nürnberg, Erlangen, Deutschland
| |
Collapse
|
3
|
Zwingmann K, Hübner L, Verwey WB, Barnhoorn JS, Godde B, Voelcker-Rehage C. Correction to: Regular participation in leisure time activities and high cardiovascular fitness improve motor sequence learning in older adults. Psychol Res 2021; 85:2484. [PMID: 34275031 PMCID: PMC8357757 DOI: 10.1007/s00426-021-01558-7] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- K Zwingmann
- Institute of Human Movement Science and Health, Chemnitz University of Technology, Chemnitz, Germany
| | - L Hübner
- Institute of Human Movement Science and Health, Chemnitz University of Technology, Chemnitz, Germany
| | - W B Verwey
- Cognitive Psychology and Ergonomics, University of Twente, Twente, The Netherlands.,Department of Health and Kinesiology, Texas A&M University, College Station, USA
| | - J S Barnhoorn
- Cognitive Psychology and Ergonomics, University of Twente, Twente, The Netherlands.,Human Behaviour & Organisational Innovation, The Netherlands Organization for Applied Scientific Research TNO, The Hague, The Netherlands
| | - B Godde
- Department of Psychology and Methods, Jacobs University Bremen, Bremen, Germany
| | - C Voelcker-Rehage
- Institute of Human Movement Science and Health, Chemnitz University of Technology, Chemnitz, Germany. .,Institute of Sport and Exercise Sciences, University of Muenster, Muenster, Germany.
| |
Collapse
|
4
|
Hübner L, Wienke A. [Medical guidelines are not justiciable : German Federal Administrative Court gives physicians a free hand]. HNO 2021; 69:1012-1013. [PMID: 33835211 DOI: 10.1007/s00106-021-01034-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2020] [Indexed: 11/24/2022]
Affiliation(s)
- L Hübner
- Kanzlei Wienke & Becker, Sachsenring 6, 50677, Köln, Deutschland.
| | - A Wienke
- Kanzlei Wienke & Becker, Sachsenring 6, 50677, Köln, Deutschland
| |
Collapse
|
5
|
Hübner L, Wienke A. [No euphemisms in the informed consent discussion : Compensation for damages after misleading information on surgical experience]. HNO 2021; 69:597-598. [PMID: 33822269 DOI: 10.1007/s00106-021-01031-2] [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] [Accepted: 07/15/2020] [Indexed: 10/21/2022]
Affiliation(s)
- L Hübner
- Wienke & Becker - Köln, Sachsenring 6, 50677, Köln, Deutschland
| | - A Wienke
- Wienke & Becker - Köln, Sachsenring 6, 50677, Köln, Deutschland.
| |
Collapse
|
6
|
Hübner L, Wienke A. [Informed consent soon only via Skype?! : On the possibilities and limitations of telemedicine informed consent]. HNO 2021; 69:236-238. [PMID: 32458024 DOI: 10.1007/s00106-020-00883-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- L Hübner
- Kanzlei Wienke & Becker, Sachsenring 6, 50677, Köln, Deutschland
| | - A Wienke
- Kanzlei Wienke & Becker, Sachsenring 6, 50677, Köln, Deutschland.
| |
Collapse
|
7
|
Hübner L, Wienke A. Patienten – allein zu Haus. HNO 2020; 68:876-880. [DOI: 10.1007/s00106-019-0726-3] [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]
|
8
|
Affiliation(s)
- A. Wienke
- Wienke & Becker – Köln, Sachsenring 6, 50677 Köln, Deutschland
| | - L. Hübner
- Wienke & Becker – Köln, Sachsenring 6, 50677 Köln, Deutschland
| | - G. Gahn
- Klinik für Neurologie, Städtisches Klinikum Karlsruhe gGmbH, Karlsruhe, Deutschland
| |
Collapse
|
9
|
Hübner L, Wienke A. Oberlandesgericht entscheidet: medizinisch-wissenschaftliche Leitlinien sind nicht justiziabel. HNO 2020; 68:613-615. [DOI: 10.1007/s00106-019-0712-9] [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]
|
10
|
Wienke A, Hübner L, Gahn G. Aufklärung bald nur noch via Skype?! DGNeurologie 2020. [PMCID: PMC7160816 DOI: 10.1007/s42451-020-00189-3] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Wienke
- Medizinrecht, Wienke & Becker – Köln, Sachsenring 6, 50677 Köln, Deutschland
| | - L. Hübner
- Medizinrecht, Wienke & Becker – Köln, Sachsenring 6, 50677 Köln, Deutschland
| | - G. Gahn
- Klinik für Neurologie, Städtisches Klinikum Karlsruhe, Moltkestraße 90, 76133 Karlsruhe, Deutschland
| |
Collapse
|
11
|
Hübner L, Wienke A. Trotz Aufklärung – unwirksame Einwilligung mangels Bedenkzeit. HNO 2020; 68:280-282. [DOI: 10.1007/s00106-019-0711-x] [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]
|
12
|
Reuter EM, Vieluf S, Koutsandreou F, Hübner L, Budde H, Godde B, Voelcker-Rehage C. A Non-linear Relationship Between Selective Attention and Associated ERP Markers Across the Lifespan. Front Psychol 2019; 10:30. [PMID: 30745886 PMCID: PMC6360996 DOI: 10.3389/fpsyg.2019.00030] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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] [Received: 10/02/2018] [Accepted: 01/07/2019] [Indexed: 11/13/2022] Open
Abstract
The ability to selectively attend to task-relevant information increases throughout childhood and decreases in older age. Here, we intended to investigate these opposing developmental trajectories, to assess whether gains and losses early and late in life are associated with similar or different electrophysiological changes, and to get a better understanding about the development in middle-adulthood. We (re-)analyzed behavioral and electrophysiological data of 211 participants, who performed a colored Flanker task while their Electroencephalography (EEG) was recorded. Participants were subdivided into six groups depending on their age, ranging from 8 to 83 years. We analyzed response speed and accuracy as well as the event replated potential (ERP) components P1 and N1, associated with visual processing and attention, N2 as marker of interference suppression and cognitive control, and P3 as a marker of cognitive updating and stimulus categorization. Response speed and accuracy were low early and later in life, with peak performance in young adults. Similarly, ERP latencies of all components and P1 and N1 amplitudes followed a u-shape pattern with shortest latencies and smallest amplitudes occurring in middle-age. N2 amplitudes were larger in children, and for incongruent stimuli in adults middle-aged and older. P3 amplitudes showed a parietal-to-frontal shift with age. Further, group-wise regression analyses suggested that children’s performance depended on cognitive processing speed, while older adults’ performance depended on cognitive resources. Together these results imply that different mechanisms restrict performance early and late in life and suggest a non-linear relationship between electrophysiological markers and performance in the Flanker task across the lifespan.
Collapse
Affiliation(s)
- Eva-Maria Reuter
- Centre for Sensorimotor Performance, School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Solveig Vieluf
- Institute of Sports Medicine, Paderborn University, Paderborn, Germany
| | | | - Lena Hübner
- Institute of Human Movement Science and Health, Chemnitz University of Technology, Chemnitz, Germany
| | - Henning Budde
- Faculty of Human Sciences, Medical School Hamburg, Hamburg, Germany.,Physical Activity, Physical Education, Health and Sport Research Centre, Sports Science Department, School of Science and Engineering, Reykjavik University, Reykjavik, Iceland.,Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Ben Godde
- Department of Psychology and Methods, Jacobs University, Bremen, Germany
| | - Claudia Voelcker-Rehage
- Institute of Human Movement Science and Health, Chemnitz University of Technology, Chemnitz, Germany
| |
Collapse
|
13
|
Hübner L, Godde B, Voelcker-Rehage C. Acute Exercise as an Intervention to Trigger Motor Performance and EEG Beta Activity in Older Adults. Neural Plast 2018; 2018:4756785. [PMID: 30675151 PMCID: PMC6323490 DOI: 10.1155/2018/4756785] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/29/2018] [Indexed: 12/29/2022] Open
Abstract
Acute bouts of exercise have been shown to improve fine motor control performance and to facilitate motor memory consolidation processes in young adults. Exercise effects might be reflected in EEG task-related power (TRPow) decreases in the beta band (13-30 Hz) as an indicator of active motor processing. This study aimed to investigate those effects in healthy older adults. Thirty-eight participants (65-74 years of age) were assigned to an experimental (EG, acute exercise) or a control group (CG, rest). Fine motor control was assessed using a precision grip force modulation (FM) task. FM performance and EEG were measured at (1) baseline (immediately before acute exercise/rest), (2) during practice sessions immediately after, (3) 30 minutes, and (4) 24 hours (FM only) after exercise/rest. A marginal significant effect indicated that EG revealed more improvement in fine motor performance immediately after exercise than CG after resting. EG showed enhanced consolidation of short-term and long-term motor memory, whereas CG revealed only a tendency for short-term motor memory consolidation. Stronger TRPow decreases were revealed immediately after exercise in the contralateral frontal brain area as compared to the control condition. This finding indicates that acute exercise might enhance cortical activation and thus, improves fine motor control by enabling healthy older adults to better utilize existing frontal brain capacities during fine motor control tasks after exercise. Furthermore, acute exercise can act as a possible intervention to enhance motor memory consolidation in older adults.
Collapse
Affiliation(s)
- Lena Hübner
- Professorship of Sports Psychology, Institute of Human Movement Science and Health, Chemnitz University of Technology, Thüringer Weg 11, 09126 Chemnitz, Germany
| | - Ben Godde
- Psychology & Methods, Focus Area Diversity, Jacobs University Bremen gGmbH, Campus Ring 1, 28759 Bremen, Germany
| | - Claudia Voelcker-Rehage
- Professorship of Sports Psychology, Institute of Human Movement Science and Health, Chemnitz University of Technology, Thüringer Weg 11, 09126 Chemnitz, Germany
| |
Collapse
|
14
|
Hübner L, Godde B, Voelcker-Rehage C. Older adults reveal enhanced task-related beta power decreases during a force modulation task. Behav Brain Res 2018; 345:104-113. [DOI: 10.1016/j.bbr.2018.02.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 02/16/2018] [Accepted: 02/20/2018] [Indexed: 10/18/2022]
|
15
|
Hübner L, Voelcker-Rehage C. Does physical activity benefit motor performance and learning of upper extremity tasks in older adults? - A systematic review. Eur Rev Aging Phys Act 2017; 14:15. [PMID: 28919929 PMCID: PMC5596935 DOI: 10.1186/s11556-017-0181-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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] [Received: 03/16/2017] [Accepted: 07/13/2017] [Indexed: 12/18/2022] Open
Abstract
Upper extremity motor performance declines with increasing age. However, older adults need to maintain, learn new and relearn known motor tasks. Research with young adults indicated that regular and acute physical activity might facilitate motor performance and motor learning processes. Therefore, this review aimed to examine the association between chronic physical activity and acute bouts of exercise on motor performance and motor learning in upper extremity motor tasks in older adults. Literature was searched via Cochrane library, PubMED, PsycINFO and Scopus and 27 studies met all inclusion criteria. All studies dealt with the influence of chronic physical activity on motor performance or motor learning, no appropriate study examining the influence of an acute bout of exercise in older adults was found. Results concerning the association of chronic physical activity and motor performance are mixed and seem to be influenced by the study design, kind of exercise, motor task, and exercise intensity. Regarding motor learning, a high physical activity or cardiovascular fitness level seems to boost the initial phase of motor learning; results differ with respect to motor retention. Overall, (motor-coordinative) intervention studies seem to be more promising than cross-sectional studies.
Collapse
Affiliation(s)
- Lena Hübner
- Sports Psychology, Institute of Human Movement Science and Health, Faculty of Behavioural and Social Sciences, Chemnitz University of Technology, Thueringer Weg 11, 09126 Chemnitz, Germany
| | - Claudia Voelcker-Rehage
- Sports Psychology, Institute of Human Movement Science and Health, Faculty of Behavioural and Social Sciences, Chemnitz University of Technology, Thueringer Weg 11, 09126 Chemnitz, Germany
| |
Collapse
|
16
|
Wienke A, Hübner L. Lebensverändernde Folgen nach grob fehlerhafter Nasennebenhöhlenoperation. Laryngorhinootologie 2017; 96:244-245. [PMID: 28493253 DOI: 10.1055/s-0042-114796] [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: 10/19/2022]
|
17
|
Hübner L. Akute körperliche Belastung zur Förderung motorischen Lernens. Zeitschrift für Sportpsychologie 2017. [DOI: 10.1026/1612-5010/a000197] [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: 11/04/2022]
|
18
|
Abstract
Background: The intensive use of Internet as health guide is proved by a current representative survey. Online orders of OTC pharmaceuticals and prescription medicine represent a special way of utillisation. Intention: The aim of the following study is to investigate motives and backgrounds of self-medication in coherency of health and ordering of OTC pharmaceuticals via Internet. Method: With an online questionnaire developed in particular for this thesis N=104 internet users (mean age M=32,7; SD=11,1 consisting of 73 female and 31 male participants) were questioned concerning the relevant topics. Furthermore, the subjects were interviewed with regard to identification of their quality of life (with the German version of the EUROHIS-QOL 8 item index), their well-being (by using the German version of the WHO-5 well-being index, version II). Results: The wish for (especially temporal) independence from a physicians treatment and the idea of a faster convalescence or prevention of worse ailment could be identified as motives for self-medication. The most frequently selected advantages of ordering drugs via internet were the lower price, organisational aspects such as direct home delivery or saving time without a consultation. In contrast, the lack of advice was often mentioned as a possible disadvantage, just like the risk of undetected and undiagnosed diseases. Compared to participants who did not do any Internet orders, participants who ordered their non-prescription drugs on the Internet were less aware of possible risks and they also used painkillers available without prescription more frequently. However, there were no differences in the total amount of applied OTC medications, which made a drug abuse less likely. Overall, self-medication of the users of Internet forums interviewed within this thesis seemed to be quantitatively and qualitatively appropriate. Conclusion: Self-medication by Internet users in this study seems to be reasonable in a quantitative and qualitative way.
Collapse
Affiliation(s)
- C Eichenberg
- Department Psychologie, Sigmund Freud PrivatUniversität, Wien, Austria
| | - L Hübner
- Department Psychologie, Sigmund Freud PrivatUniversität, Wien, Austria
| |
Collapse
|
19
|
Abstract
Background Obesity is associated with an elevated risk for several types of cancer and thus a major health hazard. However, the mechanism between overweight and cancer susceptibility is still elusive. Leptin, mainly produced by adipocytes links food intake and energy expenditure. In addition, recent studies have shown an immunomodulatory impact of leptin on NK cells. The purpose of the present study was to investigate whether leptin stimulation of NK cells from obese humans leads to altered functions as compared to NK cells from lean subjects. On the basis of body mass index 20 healthy individuals were classified in two groups: normal weight (<25 kg/m2) and obese (>30 kg/m2). Peripheral blood mononuclear cells (PBMC) were isolated from blood samples. We used flow cytometry to assess differences in phenotype and activity markers (CD107a, CD178 and TRAIL) of PBMCs between both groups. Furthermore, we determined after short-term in vitro leptin stimulation the phosphorylation of JAK2, downstream target of the intracellular signaling cascade of the leptin receptor, by Western Blotting and numbers of NK-cell-tumor-cell-conjugates as well as Granzyme+ and IFN-γ+ NK cells by flow cytometry. Finally, the proliferative capacity of control and long-term (7 days) leptin-stimulated NK cells was examined. Results As opposed to similar NK cell counts, the number of CD3+CD56+ cells was significantly lower in obese compared to lean subjects. Human NK cells express the leptin receptor (Ob-R). For further determination of Ob-R, intracellular target proteins of PBMCs were investigated by Western Blotting. Phosphorylation of JAK2 was lower in obese as compared to normal weight subjects. Furthermore, significantly lower levels of TNF-related apoptosis-inducing ligand (TRAIL) as an NK cell functional marker in obese subjects were found. In vitro leptin stimulation resulted in a higher production of interferon-γ in NK cells of normal weight subjects. Interestingly, long-term leptin stimulation had no significant influence on numbers of proliferating NK cells. Conclusions NK cells from obese healthy humans show functional deficits and altered responses after in vitro leptin challenge.
Collapse
Affiliation(s)
- Tobias Laue
- Institute for Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany ; Centre for Pediatrics and Adolescent Medicine, Hannover Medical School, Hannover, Germany
| | - Christiane D Wrann
- Dana-Farber Cancer Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA USA
| | | | - Daniel Pietsch
- Institute of Clinical Chemistry, Hannover Medical School, Hannover, Germany
| | - Lena Hübner
- Department of General-, Visceral-, Vascular and Thoracic Surgery, Charité, University Medicine Berlin, Campus Mitte, Berlin, Germany
| | - Heike Kielstein
- Department of Anatomy and Cell Biology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| |
Collapse
|
20
|
Gehatia M, Hübner L. Vergleich zwischen der Svedberg-, der Maximalgradienten- und der Drei-Punkte-Methode zur Auswertung der mit Philpot-Svensson-Optik gewonnenen Kurven der Ultrazentrifuge. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1960-0603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Rinderplasma-Albumin wurde bei seinem isoelektrischen Punkt gelöst und in einer Unterschichtungszelle ultrazentrifugiert. Die mit Philpot-Svensson- Optik und Phasenplatte gewonnenen Sedimentationskurven wurden nach der SvEdbERG-Methode 1 (Sv.M.), nach der Maximalgradienten-Methode 2 (Mg.M.) und nach der Drei-Punkte-Methode 2 (D.P.M.) ausgewertet.
Die klassische Svedberg - Methode liefert die Sedimentationskonstante s; mit den beiden neuen Methoden kann man auf einfache Weise unmittelbar den Quotienten s/D sowie gleichzeitig und aus denselben Meßgrößen die Sedimentationskonstante s und die Diffusionskonstante D erhalten. (Die Bestimmung des zweiten Momentes der Sedimentationskurve, wie bei der ARCAIBALD-Methode 3 ist dabei nicht erforderlich.)
Nach Sv.M. und Mg.M. ergab sich der gleiche Wert für die Sedimentationskonstante. Nach der D.P.M. wurde eine um etwa 11% größere Sedimentationskonstante erhalten. Diese Abweichung beruht vermutlich auf einem bei der D.P.M. leicht unterlaufenden systematischen Meßfehler.
Der mittlere Fehler der nach Svedberg bestimmten Sedimentationskonstante betrug ± 2,7%. Etwa sechsmal größer war der mittlere Fehler von s und s/D bei der Mg.M., nämlich ± 17%, trotz annähernd gleicher Meßgenauigkeit bei Sv.M. und Mg.M.
Es scheint, daß die neuen Methoden schärfere und eindeutigere Sedimentations-Kurven erfordern als sie mit dem Philpot-Svensson- System bisher im allgemeinen erhalten werden können.
Eine Aussnahme macht dabei die nach der Mg.M. bestimmte Diffusionskonstante D, deren mittlerer Fehler hier 1,2% betrug.
Collapse
Affiliation(s)
- M. Gehatia
- Aus dem Institut für vegetative Physiologie der Universität Frankfurt a. M
| | - L. Hübner
- aus dem Chemotherapeutischen Forschungsinstitut „Georg-Speyer-Haus"
| |
Collapse
|
21
|
Landberg J, Hübner L. Changes in the Relationship Between Volume of Consumption and Alcohol-Related Problems in Sweden During 1979–2003. Alcohol Alcohol 2013; 49:308-16. [DOI: 10.1093/alcalc/agt149] [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] [Indexed: 11/12/2022] Open
|
22
|
|
23
|
Wrann CD, Laue T, Hübner L, Kuhlmann S, Jacobs R, Goudeva L, Nave H. Short-term and long-term leptin exposure differentially affect human natural killer cell immune functions. Am J Physiol Endocrinol Metab 2012; 302:E108-16. [PMID: 21952038 DOI: 10.1152/ajpendo.00057.2011] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [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: 12/20/2022]
Abstract
Epidemiological studies have indicated that obesity is associated with a higher risk for certain cancers caused by elevated levels of adipocyte-derived hormones. Leptin, one such hormone produced by adipocytes, is a major regulator of metabolism and has also been shown to modulate immunity. However, its role in regulating human natural killer (NK) cell functions is largely unknown. Here, we show that the leptin receptor (Ob-R) is expressed on 5% of NK cells isolated from blood donors, as measured with flow cytometry, and expression of the signal-transducing long form of the leptin receptor Ob-Rb was confirmed with quantitative PCR. The Ob-R+ subpopulation displayed a lower expression of CD16, a cell surface receptor mediating antibody-dependent activation. Short-term stimulation with leptin increased IFNγ secretion, CD69 activation marker expression, and cytotoxic lysis of tumor cells; this was mediated by an improved conjugate forming between NK cells and tumor cells as well as higher expression of tumor necrosis factor-related apoptosis-inducing ligand. On the contrary, long-term incubation with leptin significantly impaired these NK cell immune functions and decreased cell proliferation. In addition, phosphorylation of Jak-2 after leptin stimulation was reduced in peripheral mononuclear blood cells from obese humans compared with normal-weight controls. NK cells represent an immune cell population that is crucial for an effective antitumor response. Here, we show that long-term exposure to leptin, similarly to the situation in obese individuals with elevated serum leptin levels, significantly impairs integral parts of NK cell immune functions, possibly linking leptin to increased cancer susceptibility in obesity.
Collapse
Affiliation(s)
- Christiane D Wrann
- Div. of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA.
| | | | | | | | | | | | | |
Collapse
|
24
|
|
25
|
Arnoldi J, Schlüter C, Duchrow M, Hübner L, Ernst M, Teske A, Flad HD, Gerdes J, Böttger EC. Species-specific assessment of Mycobacterium leprae in skin biopsies by in situ hybridization and polymerase chain reaction. J Transl Med 1992; 66:618-23. [PMID: 1573855] [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: 12/27/2022] Open
Abstract
Conventional histopathologic diagnosis of mycobacterial infections are limited to the determination of "acid-fast bacilli". A species-specific diagnosis is thus far impossible. In addition, routine microbiologic assessments of mycobacteria suffer from the major drawback that a species-specific diagnosis is extremely time-consuming and in several cases even impossible. As Mycobacterium leprae cannot be cultured in vitro, we tried to specifically target this obligate intracellular parasite by in situ hybridization and polymerase chain reaction (PCR) techniques. For this purpose we used a 22 mer oligonucleotide probe recognizing a species-specific sequence of the 16S rRNA of Mycobacterium leprae. Using an immunoenzymatic detection method for in situ hybridization we were able to specifically assess Mycobacterium leprae (a) in long-term cultured macrophages in vitro infected with different mycobacteria species and (b) in frozen sections of skin biopsies obtained from patients suffering from lepromatous leprosy. These results could be confirmed and extended by PCR experiments in which we used conserved oligonucleotide primers for 16S rRNA to amplify bacterial DNA isolated from different eubacterial species and from fresh-frozen as well as from formalin-fixed, paraffin-embedded and routinely processed mycobacteria-infected tissues. Upon Southern blot analysis, the Mycobacterium leprae-specific oligonucleotide probe exclusively hybridized with PCR products obtained from Mycobacterium leprae-containing samples (including paraffin sections), but not with PCR products obtained from samples containing other mycobacterial species. As species-specific oligonucleotide probes targeted at rRNA are described for a variety of mycobacterial species, these methods may be generally applied for a rapid species-specific assessment of mycobacteria in histologic material.
Collapse
Affiliation(s)
- J Arnoldi
- Department of Immunology and Cell Biology, Forschungsinstitut Borstel, Federal Republic of Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Hübner L, Ernst M, von Laer D, Schwander S, Flad HD. Enhancement of monocyte antimycobacterial activity by diethyldithiocarbamate (DTC). Int J Immunopharmacol 1991; 13:1067-72. [PMID: 1667649 DOI: 10.1016/0192-0561(91)90157-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Diethyldithiocarbamate (DTC) has been recently reported to significantly reduce the incidence of opportunistic infections in HIV-infected patients. The present study addresses the question whether DTC is capable of stimulating antimycobacterial activity of mononuclear phagocytes. We found that peripheral blood mononuclear cells (PBMC) of healthy subjects preincubated in vitro with 100-1000 ng/ml of DTC and thereafter infected with Mycobacterium tuberculosis H37Rv or Mycobacterium avium-intracellulare complex exhibited an enhanced antimycobacterial activity compared with control-incubated cells as assessed by the determination of mycobacterial colony-forming units. In subsequent experiments monocytes from healthy volunteers injected with 5 mg/kg body weight of DTC were tested ex vivo for antimycobacterial activity at various periods of time after injection. Injection of DTC resulted in a significant enhancement of antimycobacterial activity which was most evident 24 h after DTC injection. We conclude that DTC stimulates the antimicrobial function of mononuclear phagocytes both in vitro and in vivo. These results may explain the favourable clinical course observed in HIV-infected patients treated with DTC and may serve as a basis for treatment with DTC in patients with drug-resistant atypical mycobacteriosis.
Collapse
Affiliation(s)
- L Hübner
- Department of Immunology and Cell Biology, Forschungsinstitut Borstel, F.R.G
| | | | | | | | | |
Collapse
|
27
|
Hübner L. [Medical finding: silent myocardial ischemia: how to proceed? Many parallels to stress angina--when controlled diagnosis?]. Fortschr Med 1988; 106:49. [PMID: 3169671] [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: 01/04/2023]
|
28
|
Hübner L, Kniep EM, Laukel H, Sorg C, Fischer H, Gassel WD, Havemann K, Kickhöfen B, Lohmann-Matthes ML, Schimpl A, Wecker E. Chemical characterization of macrophage cytotoxicity factor, macrophage migration inhibitory factor, T-helper cell-replacing factor and colony-stimulating factor from culture supernatants of concanavalin A-stimulated murine spleen cells. Immunobiology 1980; 157:169-78. [PMID: 6997190 DOI: 10.1016/s0171-2985(80)80098-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Supernatants from Concanavalin A-stimulated murine spleen cells were subjected to hydrophobic interaction chromatography on phenyl-Sepharose. Macrophage cytotoxicity factor (MCF), macrophage migration inhibitory factor (MIF), T-helper cell-replacing factor (TRF) and colony-stimulating factor (CSF) were bound at high ionic strength and were released stepwise at low ionic strength. CSF thus could be separated from MCF, MIF and TRF and the bulk of other proteins. Chromatograhy of pools containing MCF, MIF and TRF on Sephadex did not lead to a separation of the three activities which were all found in a molecular weight range of 25.000-55.000. Isoelectric focusing of these pools in pH range from 4 to 9 gave two peaks for MCF in a single sharp peak at pH 5.3. The results demonstrate that the four biological activities can be distinguished on a chemical basis and are accessible for purification and chemical characterization.
Collapse
|
29
|
Hübner L, Schimpl A, Wecker E. Partial characterization and purification of murine T helper cell replacing factor (TRF)--III. Further purification steps and serological characteristics. Mol Immunol 1980; 17:591-9. [PMID: 7012585 DOI: 10.1016/0161-5890(80)90157-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
30
|
Hübner L, Müller G, Schimpl A, Wecker E. Partial characterization and purification of murine T cell-replacing factor, TRF. II. Biochemical characteristics. Immunochemistry 1978; 15:33-9. [PMID: 75173 DOI: 10.1016/0161-5890(78)90023-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
31
|
Müller G, Hübner L, Schimpl A, Wecker E. Partial characterization and purification of murine T cell-replacing factor, TRF. I. Purification procedures and gel electrophoretic analysis. Immunochemistry 1978; 15:27-32. [PMID: 304832 DOI: 10.1016/0161-5890(78)90022-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
32
|
Schimpl A, Wecker E, Hübner L, Hünig T, Müfler G. Source, function, and properties of murine and human T-cell-replacing factors (TRF). Cell Immunol 1976. [DOI: 10.1016/0008-8749(76)90309-9] [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: 11/26/2022]
|
33
|
|
34
|
Dütting D, Hübner L. The effect of antibiotics on the in vivo synthesis of messenger ribonucleic acid from the lactose operon of Escherichia coli. Mol Gen Genet 1972; 116:277-90. [PMID: 4340140 DOI: 10.1007/bf00269771] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
35
|
Affiliation(s)
- U Weser
- King's College London, 68 Half Moon Lane, S.E. 24, England
| | | |
Collapse
|
36
|
Affiliation(s)
- U Weser
- King's College London, 68 Half Moon Lane, S.E. 24, England, UK
| | | | | |
Collapse
|
37
|
Bockemüller W, Albers P, Freiskorn R, Hübner L, Janson D. [Constituent substances in tubercle bacilli]. Z Immunitatsforsch Allerg Klin Immunol 1967; 132:395-420. [PMID: 4231354] [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: 01/09/2023]
|
38
|
Hübner L. [The healing of cornea cuts set by surgery under the effect of corticosteroids in dog]. Wien Tierarztl Monatsschr 1966; 53:75-89. [PMID: 5953492] [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: 01/17/2023]
|
39
|
Michaelis R, Hübner L. [Hip dysplasia and hand skeleton development. Comparative studies on the occurrence of dysostotic signs in the skeleton of the hand of children with congenital hip dysplasia and in the skeleton of the hand of healthy children]. Arch Orthop Unfallchir 1966; 59:152-67. [PMID: 5982773 DOI: 10.1007/bf00416744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
40
|
Hübner L. [Closure rhythm and closure disorders of synchondrosis ischiopubica and their dependence on the pathology of the hip joint (contribution to the clinical aspects of the growing pelvis)]. Z Orthop Ihre Grenzgeb 1965; 100:38-91. [PMID: 4220766] [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: 01/09/2023]
|
41
|
Neumann G, Hübner L. Ein röntgenologischer Beitrag zur Diagnostik von Systemerkrankungen. ROFO-FORTSCHR RONTG 1961. [DOI: 10.1055/s-0029-1226860] [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]
|
42
|
Baaz M, Gutmann V, Hübner L. Der nachweis von chloridionenübergängen in phosphoroxychloridlösungen durch bildung des [FeCl4]−-ions aus FeCl3. ACTA ACUST UNITED AC 1961. [DOI: 10.1016/0022-1902(61)80398-9] [Citation(s) in RCA: 3] [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: 10/27/2022]
|