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Goebel I, Mohr T, Axt PN, Watz H, Trinkmann F, Weckmann M, Drömann D, Franzen KF. Impact of Heated Tobacco Products, E-Cigarettes, and Combustible Cigarettes on Small Airways and Arterial Stiffness. Toxics 2023; 11:758. [PMID: 37755768 PMCID: PMC10535653 DOI: 10.3390/toxics11090758] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/28/2023]
Abstract
Smoking cessation is difficult but maintaining smoke-free without nicotine replacement therapy is even harder. During the last few years, several different alternative products, including heated tobacco products (HTP), have been introduced to the market. In this study, we investigated the acute effects of IQOSTM and gloTM (two HTP) consumption on small airway function and arterial stiffness in a head-to-head design, comparing them to combustible cigarettes, nicotine-free e-cigarettes and a sham smoking group. Seventeen healthy occasional smokers were included in a single-center, five-arm, crossover study. The parameters of small airway function and hemodynamics were collected at several time points before and after consumption using Mobil-O-Graph™ (I.E.M., Stolberg, Germany) and TremoFlo® c-100 (THORASYS Thoracic Medical Systems Inc., Montreal, QC, Canada). Small airway obstruction and resistance were both significantly increased after the consumption of cigarettes and substitute products. All products containing nicotine led to similar significant increases in blood pressure and arterial stiffness. Hemodynamic parameters were also increased after the consumption of e-cigarettes without nicotine, but compared to nicotine-containing products, the increase was shorter and weaker. We conclude that, although it has yet to be determined why, HTP have acute harmful effects on small airway function, possibly even exceeding the effects of combustible cigarettes. Like other nicotine-containing products, HTP leads to a nicotine-related acute increase in arterial stiffness and cardiovascular stress, similar to combustible cigarettes, which associates these products with an increased cardiovascular risk.
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Affiliation(s)
- Isabel Goebel
- Medical Clinic III, Site Lübeck, University Hospital Schleswig-Holstein, 23538 Lübeck, Germany
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
| | - Theresa Mohr
- Medical Clinic III, Site Lübeck, University Hospital Schleswig-Holstein, 23538 Lübeck, Germany
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
| | - Paul N. Axt
- Medical Clinic III, Site Lübeck, University Hospital Schleswig-Holstein, 23538 Lübeck, Germany
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
| | - Henrik Watz
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
- Pulmonary Research Institute (PRI) at LungenClinic Großhansdorf, 22927 Großhansdorf, Germany
| | - Frederik Trinkmann
- Thoraxklinik Heidelberg, Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), University Hospital Heidelberg, 69126 Heidelberg, Germany
- Department of Biomedical Informatics, Center for Preventive Medicine and Digital Health (CPD), University Medical Center Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Markus Weckmann
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
- Clinic for Pediatric, Site Lübeck, University Hospital Schleswig-Holstein, 23538 Lübeck, Germany
| | - Daniel Drömann
- Medical Clinic III, Site Lübeck, University Hospital Schleswig-Holstein, 23538 Lübeck, Germany
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
| | - Klaas F. Franzen
- Medical Clinic III, Site Lübeck, University Hospital Schleswig-Holstein, 23538 Lübeck, Germany
- Airway Research Center North (ARCN), DZL, 35392 Lübeck, Germany
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2
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Jagomast T, Mohr T, Axt PN, Mortensen K, Brinkmann F, Weckmann M, Ring G, Reppel M, Drömann D, Franzen KF. Effects of Physical Activity in the High School Curriculum on Cardiovascular Health, Cognitive and Physical Performance. J Funct Morphol Kinesiol 2023; 8:101. [PMID: 37489314 PMCID: PMC10366953 DOI: 10.3390/jfmk8030101] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/11/2023] [Accepted: 07/18/2023] [Indexed: 07/26/2023] Open
Abstract
Cardiovascular health at a young age has implications for preventing cardiovascular disease, and it is associated with improved physical and cognitive performance during the aging process. Sports are well known to prevent cardiovascular disease; however, school-based interventions have mostly been neglected. This cross-sectional study aimed to compare groups of high school students, stratified by the amount of physical activity in their high school curriculum and downtime. Comparisons concerning physical and cognitive performance and arterial stiffness were made. A total of 63 senior-year students were investigated. Arterial stiffness was assessed using the oscillometric technique with ArteriographTM detection. Three-kilometer and pendulum runs were conducted as typical training loads. Cognitive performance was evaluated via the visual and verbal memory and number connection tests. Regarding cognitive skills, extracurricular physical activity improved the number connection test in male participants (p = 0.004). For physical performance, female students with a sports-focused curriculum were faster in the 3 km run (p < 0.001). Concerning arterial stiffness, the measurements yielded a lower mean arterial pressure (p = 0.015) and aortic pulse wave velocity (p = 0.04) in male students with a sports-focused curriculum. In summary, extracurricular physical activity and enrollment in a sports-focused curriculum may be associated with lower cardiovascular risk due to lower arterial stiffness and better physical and cognitive abilities.
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Affiliation(s)
- Tobias Jagomast
- Medical Clinic III, University Clinic Schleswig-Holstein Campus Luebeck, Ratzeburger Alle 160, 23562 Luebeck, Germany
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Theresa Mohr
- Medical Clinic III, University Clinic Schleswig-Holstein Campus Luebeck, Ratzeburger Alle 160, 23562 Luebeck, Germany
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Paul Niklas Axt
- Medical Clinic III, University Clinic Schleswig-Holstein Campus Luebeck, Ratzeburger Alle 160, 23562 Luebeck, Germany
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Kai Mortensen
- Cardiology Kiel, 24116 Kiel, Germany
- Clinic for Rhythmology, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany
| | - Folke Brinkmann
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
- Section for Pulmonary Pediatrics, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany
| | - Markus Weckmann
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
- Section for Pulmonary Pediatrics, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany
| | - Gordon Ring
- DRK Krankenhaus Mölln-Ratzeburg, Anästhesie, Röpersberg 2, 23909 Ratzeburg, Germany
| | - Michael Reppel
- Clinic for Rhythmology, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany
- Cardiology Landsberg, 86899 Landsberg, Germany
| | - Daniel Drömann
- Medical Clinic III, University Clinic Schleswig-Holstein Campus Luebeck, Ratzeburger Alle 160, 23562 Luebeck, Germany
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Klaas F Franzen
- Medical Clinic III, University Clinic Schleswig-Holstein Campus Luebeck, Ratzeburger Alle 160, 23562 Luebeck, Germany
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
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Probst E, Franzen KF, Idel C, Plötze-Martin K, Fleckner J, Rades D, Bohnet S, Bruchhage KL, Pries R. Differential Effects of Anti-PD-1/PD-L1 Checkpoint Inhibitors on Adhesion Molecules and Cytokine Secretion by THP-1 Monocytes. Anticancer Res 2023; 43:2445-2454. [PMID: 37247886 DOI: 10.21873/anticanres.16412] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND/AIM Immune checkpoint inhibitors have improved the treatment regimen for human cancers in recent years. Particularly, inhibitors of the checkpoint molecules PD-1/PD-L1 have emerged as promising therapeutic treatments by preventing T-cell anergy and exhaustion. However, the impact of different anti-PD-1/PD-L1 checkpoint inhibitors on human monocytes remains elusive. MATERIALS AND METHODS In this study, using the human monocyte leukemia cell line THP-1 as a model, we investigated the influence of different therapeutic anti-PD-1/PD-L1 checkpoint inhibitors on monocytic adhesion molecule expression and cytokine secretion. THP-1 monocytes were treated with the anti-PD-1 checkpoint inhibitors Nivolumab and Pembrolizumab and anti-PD-L1 checkpoint inhibitors Atezolizumab and Durvalumab. Cytokine expression patterns were evaluated using cytokine arrays and enzyme-linked immunosorbent assays (ELISA) and analysis of adhesion molecules was addressed using flow cytometry. RESULTS Our data show an overall moderate apoptosis induction upon checkpoint inhibitor treatment and significantly reduced expression levels of adhesion molecules CD29, CD49d, and CX3CR1 in response to anti-PD-1 treatment. Cytokine screening revealed overall decreased secretion levels of insulin-like growth factor binding protein 2 (IGFBP2), CD147 (basigin) and CD31 (PECAM-1) as well as elevated levels of interleukin 5 (IL-5) and interferon gamma (IFNγ) in response to checkpoint inhibitor treatment. CONCLUSION Our data indicate differential effects of anti-PD-1/PD-L1 checkpoint inhibitors on THP-1 monocytes, both by specific anti-PD-1/PD-L1 binding and unspecific antibody IgG isotype recognition. Further investigations on peripheral blood monocyte subsets in terms of their expansion and function upon checkpoint inhibitor therapy are required to better understand the individual immunological balances in cancer patients in long-term observational studies.
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Affiliation(s)
- Eva Probst
- Department of Medical Clinic III, University of Lübeck, Lübeck, Germany
| | - Klaas F Franzen
- Department of Medical Clinic III, University of Lübeck, Lübeck, Germany
| | - Christian Idel
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Kirstin Plötze-Martin
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Jonas Fleckner
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Dirk Rades
- Department of Radiation Oncology, University of Lübeck, Lübeck, Germany
| | - Sabine Bohnet
- Department of Medical Clinic III, University of Lübeck, Lübeck, Germany
| | - Karl-Ludwig Bruchhage
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Ralph Pries
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
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Finck JM, Bohnet S, Auth K, Tangemann-Münstedt I, Drömann D, Franzen KF. Smoking Behavior and Smoking Cessation Because of and during the COVID-19 Pandemic: A Brief Online Survey 12 Months into the Pandemic and during the Second Wave in Europe. Int J Environ Res Public Health 2022; 19:16540. [PMID: 36554420 PMCID: PMC9779274 DOI: 10.3390/ijerph192416540] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/28/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Smoking is considered a major preventable cause of cardiovascular and lung diseases, as well as cancer. During the COVID-19 pandemic, there was extensive discussion about the influence of nicotine use; ultimately, smoking was considered a major risk factor for poor disease progression. Therefore, in April 2021, we conducted an anonymous cross-sectional online survey on smoking and vaping behavior, as well as smoking cessation, in four different countries in Europe (the United Kingdom, Germany, Spain, and Italy). A total of 3605 participants completed a questionnaire on their smoking and vaping behaviors and smoking cessation because of and during the COVID-19 pandemic. Fear of COVID-19 infection, a high percentage of quarantine stays (44.9% Italy and 52.1% Spain), and high infection (75.5% Italy and 52.4% Spain) and death (42% Italy) rates in respondents' personal circles were observed mostly in the surveyed populations of Italy and Spain. Smoking cessation attempts and success were mainly seen in the Italian population and were linked to psychological distress, while the same effects were shown for vaping in Spain. In summary, health anxiety was detected in all cohorts. Despite these findings, smoking as a risk factor for severe outcomes of COVID-19 infection did not lead to a higher rate of smoking cessation attempts.
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Affiliation(s)
- Jule M. Finck
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Sabine Bohnet
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Katharina Auth
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Imke Tangemann-Münstedt
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Daniel Drömann
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Klaas F. Franzen
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
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Benthien J, Meusel M, Cayo Talavera S, Eitel I, Drömann D, Franzen KF. JUUL™ing and Heating Lead to a Worsening of Arterial Stiffness. Medicines (Basel) 2022; 9:medicines9040028. [PMID: 35447876 PMCID: PMC9025913 DOI: 10.3390/medicines9040028] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/26/2022] [Accepted: 03/29/2022] [Indexed: 11/29/2022]
Abstract
Background: The widespread use of the JUUL™ device ignited a discussion about the effects these products have on harm reduction. Therefore, we conducted a study directly comparing the JUUL™ device with a cigarette, a heated tobacco product, and a nicotine-free e-cigarette to examine the acute effects on arterial stiffness. Methods: This crossover-designed study examines 20 occasional smokers (age 25.2 ± 2.5 years). Study participants used each of the four smoking devices for a duration of 5 min following a protocol. Peripheral blood pressure and parameters of arterial stiffness and endothelial vasodilator function such as the reactive hyperemia index and the augmentation index were measured using the EndoPAT™2000 before and after. Results: In addition to significant peripheral hemodynamic changes after 5 and 10 min (p < 0.05), the reactive hyperemia index showed a significant decrease for all devices 15 min after consumption and remained significantly decreased after 60 min (p < 0.01). The augmentation index adjusted for a heart rate of 75 bpm increased significantly for all devices 15 and 60 min after consumption (p < 0.01). Conclusions: In conclusion, the increases in blood pressure and arterial stiffness are similar after smoking, JUUL™ing, heating, and vaping. These changes may be associated with an increase in cardiovascular risks; however, an evaluation of the long-term effects of JUUL™ing, vaping and heating is needed.
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Affiliation(s)
- Julia Benthien
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany; (J.B.); (S.C.T.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Moritz Meusel
- Medical Clinic II, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany; (M.M.); (I.E.)
| | - Silja Cayo Talavera
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany; (J.B.); (S.C.T.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Ingo Eitel
- Medical Clinic II, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany; (M.M.); (I.E.)
| | - Daniel Drömann
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany; (J.B.); (S.C.T.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Klaas F. Franzen
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Lübeck, Germany; (J.B.); (S.C.T.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
- Correspondence: ; Tel.: +49-(451)-500-45003
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Gernun S, Franzen KF, Mallock N, Benthien J, Luch A, Mortensen K, Drömann D, Pogarell O, Rüther T, Rabenstein A. Cardiovascular functions and arterial stiffness after JUUL use. Tob Induc Dis 2022; 20:34. [PMID: 35431721 PMCID: PMC8973023 DOI: 10.18332/tid/144317] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/31/2021] [Accepted: 11/28/2021] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION METHODS RESULTS CONCLUSIONS
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Affiliation(s)
- Solveig Gernun
- Department of Psychiatry and Psychotherapy, Klinikum der Universität München, Munich, Germany
| | - Klaas F. Franzen
- Medizinische Klinik III, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, Germany
| | - Nadja Mallock
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment, Berlin, Germany
- Institute of Pharmacy, Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Julia Benthien
- Medizinische Klinik III, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, Germany
| | - Andreas Luch
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment, Berlin, Germany
- Institute of Pharmacy, Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | | | - Daniel Drömann
- Medizinische Klinik III, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, Germany
| | - Oliver Pogarell
- Department of Psychiatry and Psychotherapy, Klinikum der Universität München, Munich, Germany
| | - Tobias Rüther
- Department of Psychiatry and Psychotherapy, Klinikum der Universität München, Munich, Germany
| | - Andrea Rabenstein
- Department of Psychiatry and Psychotherapy, Klinikum der Universität München, Munich, Germany
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Auth K, Bohnet S, Borck C, Drömann D, Franzen KF. Synonyms and Symptoms of COVID-19 and Individual and Official Actions against the Disease-A Brief Online Survey 6 Months into the Pandemic and on the Threshold of the Second Wave in Germany. Int J Environ Res Public Health 2021; 19:169. [PMID: 35010429 PMCID: PMC8750519 DOI: 10.3390/ijerph19010169] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
To control the ongoing global pandemic due to SARS-CoV-2, we need to influence people's behavior. To do so, we require information on people's knowledge and perception of the disease and their opinions about the importance of containment measures. Therefore, in August 2020, we conducted an anonymous cross-sectional online survey on these topics in 913 participants in Germany. Participants completed a questionnaire on various synonyms and symptoms of corona virus and specified the importance they attributed to individual and regulatory measures. The virus was linked more closely with most synonyms and the discovery in China than with the places of the first larger European outbreaks. General (cold-like) symptoms, such as "cough" and "fever," were more widely known than COVID-19-specific ones, e.g., "loss of taste and smell." The widely promoted individual measures "distancing," "hygiene," and "(facial) mask wearing" were rated as highly important, as were the corresponding official measures, e.g., the "distancing rule" and "mask mandate." However, the "corona warning app" and a "vaccine mandate" were rated as less important. A subgroup analysis showed broad agreement between the subgroups on nearly all issues. In conclusion, the survey provided information about the German population's perception and knowledge of the coronavirus five months into the pandemic; however, participants were younger and more educated than a representative sample. To learn from the beginning and still ongoing pandemic and develop concepts for the future, we need more conclusive studies, especially on the acceptance of further specified lockdowns, the population's willingness to be vaccinated, and the influence of misinformation on public opinion.
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Affiliation(s)
- Katharina Auth
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany; (K.A.); (S.B.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Sabine Bohnet
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany; (K.A.); (S.B.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Cornelius Borck
- Institute for History of Medicine and Science Studies, University of Lübeck, 23562 Luebeck, Germany;
| | - Daniel Drömann
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany; (K.A.); (S.B.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
| | - Klaas F. Franzen
- Medical Clinic III, Campus Lübeck, University Hospital Schleswig-Holstein, 23562 Luebeck, Germany; (K.A.); (S.B.); (D.D.)
- Airway Research Center North, Member of the German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
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Meusel M, Herrmann M, Machleidt F, Franzen KF, Krapalis AF, Sayk F. GHRH-mediated GH release is associated with sympathoactivation and baroreflex resetting: a microneurographic study in healthy humans. Am J Physiol Regul Integr Comp Physiol 2019; 317:R15-R24. [PMID: 31042402 DOI: 10.1152/ajpregu.00033.2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Previous research suggested substantial interactions of growth hormone (GH) and sympathetic nervous activity. This cross talk can be presumed both during physiological (e.g., slow-wave sleep) and pathological conditions of GH release. However, microneurographic studies of muscle sympathetic nerve activity (MSNA) and assessment of baroreflex function during acute GH-releasing hormone (GHRH)-mediated GH release were not conducted so far. In a balanced, double-blind crossover design, GHRH or placebo (normal saline) were intravenously administered to 11 healthy male volunteers. MSNA was assessed microneurographically and correlated with blood pressure (BP) and heart rate (HR) at rest before (pre-) and 30-45 (post-I) and 105-120 min (post-II) after respective injections. Additionally, baroreflex function was assessed via graded infusion of vasoactive drugs. GHRH increased GH serum levels as intended. Resting MSNA showed significant net increases of both burst rate and total activity from pre- to post-I and post-II following GHRH injections compared with placebo (ANOVA for treatment and time, burst rate: P = 0.028; total activity: P = 0.045), whereas BP and HR were not altered. ANCOVA revealed that the dependent variable MSNA was not affected by the independent variables mean arterial BP (MAP) or HR (MAP: P = 0.006; HR: P = 0.003). Baroreflex sensitivity at baroreflex challenge was not altered. GHRH-mediated GH release is associated with a significant sympathoactivation at central nervous sites superordinate to the simple baroreflex feedback loop because GH induced a baroreflex resetting without altering baroreflex sensitivity.
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Affiliation(s)
- Moritz Meusel
- Department of Internal Medicine II, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Magdalena Herrmann
- Department of Internal Medicine II, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Felix Machleidt
- Department of Internal Medicine I, University Hospital of Schleswig-Holstein, Luebeck, Germany
| | - Klaas F Franzen
- Department of Internal Medicine III, University Hospital of Schleswig-Holstein, Luebeck, Germany
| | - Alexander F Krapalis
- Department of Internal Medicine I, University Hospital of Schleswig-Holstein, Luebeck, Germany
| | - Friedhelm Sayk
- Department of Internal Medicine II, University Hospital Schleswig-Holstein, Luebeck, Germany.,Department of Intensive Care Medicine, Sana-Kliniken, Luebeck, Germany
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9
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Ott C, Franzen KF, Graf T, Weil J, Schmieder RE, Reppel M, Mortensen K. Renal denervation improves 24-hour central and peripheral blood pressures, arterial stiffness, and peripheral resistance. J Clin Hypertens (Greenwich) 2018; 20:366-372. [DOI: 10.1111/jch.13193] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/23/2017] [Accepted: 11/07/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Ott
- Department of Nephrology and Hypertension; Friedrich-Alexander Universität Erlangen-Nürnberg; Erlangen Germany
| | - Klaas F. Franzen
- Campus Lübeck Medizinische Klinik III; Universitätsklinikum Schleswig-Holstein; Lübeck Germany
| | - Tobias Graf
- Campus Lübeck Medizinische Klinik II; Universitätsklinikum Schleswig-Holstein; Lübeck Germany
| | | | - Roland E. Schmieder
- Department of Nephrology and Hypertension; Friedrich-Alexander Universität Erlangen-Nürnberg; Erlangen Germany
| | - Michael Reppel
- Campus Lübeck Medizinische Klinik II; Universitätsklinikum Schleswig-Holstein; Lübeck Germany
- Cardiology Landsberg; Landsberg Germany
| | - Kai Mortensen
- Campus Lübeck Medizinische Klinik II; Universitätsklinikum Schleswig-Holstein; Lübeck Germany
- Cardiology Practice; Kiel Germany
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