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Dopierała M, Schwermer K, Hoppe K, Kupczyk M, Pawlaczyk K. Benefits of Preserving Residual Urine Output in Patients Undergoing Maintenance Haemodialysis. Int J Nephrol Renovasc Dis 2023; 16:231-240. [PMID: 37868106 PMCID: PMC10590073 DOI: 10.2147/ijnrd.s421533] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/01/2023] [Indexed: 10/24/2023] Open
Abstract
Introduction Chronic kidney disease is a widespread medical problem that leads to higher morbidity, mortality, and a decrease in the overall well-being of the general population. This is especially expressed in patients with end-stage renal disease (ESRD) undergoing maintenance haemodialysis. Several variables could be used to evaluate those patients' well-being and mortality risk. One of them is the presence of residual urine output. Materials and Methods The study was conducted on 485 patients treated with maintenance haemodialysis. After enrollment in the study, which consisted of medical history, physical examination, hydration assessment, and blood sampling, each patient was followed up for 24 months. We used residual urine output (RUO) as a measure of residual renal function (RRF). The entire cohort was divided into 4 subgroups based on the daily urinary output (<=100mL per day, >100mL to <=500mL, >500mL to <=1000mL and >1000mL). Results The data show that the mortality rate was significantly higher in groups with lower RUO, which was caused mainly by cardiovascular events. Also, patients with higher RUO achieved better sodium, potassium, calcium, and phosphate balance. They were also less prone to overhydration and had a better nutritional status. Preserved RRF also had a positive impact on markers of cardiovascular damage, such as NT-proBNP as well as TnT. Conclusion In conclusion, preserving residual urine output in ESRD patients undergoing maintenance haemodialysis is invaluable in reducing their morbidity and mortality rates and enhancing other favourable parameters of those patients.
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Affiliation(s)
- Mikołaj Dopierała
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Małgorzata Kupczyk
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
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Hoppe K, Khan E, Meybohm P, Riese T. Mechanical power of ventilation and driving pressure: two undervalued parameters for pre extracorporeal membrane oxygenation ventilation and during daily management? Crit Care 2023; 27:111. [PMID: 36915183 PMCID: PMC10010963 DOI: 10.1186/s13054-023-04375-z] [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: 12/12/2022] [Accepted: 02/19/2023] [Indexed: 03/15/2023] Open
Abstract
The current ARDS guidelines highly recommend lung protective ventilation which include plateau pressure (Pplat < 30 cm H2O), positive end expiratory pressure (PEEP > 5 cm H2O) and tidal volume (Vt of 6 ml/kg) of predicted body weight. In contrast, the ELSO guidelines suggest the evaluation of an indication of veno-venous extracorporeal membrane oxygenation (ECMO) due to hypoxemic or hypercapnic respiratory failure or as bridge to lung transplantation. Finally, these recommendations remain a wide range of scope of interpretation. However, particularly patients with moderate-severe to severe ARDS might benefit from strict adherence to lung protective ventilation strategies. Subsequently, we discuss whether extended physiological ventilation parameter analysis might be relevant for indication of ECMO support and can be implemented during the daily routine evaluation of ARDS patients. Particularly, this viewpoint focus on driving pressure and mechanical power.
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Affiliation(s)
- K Hoppe
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany.
| | - E Khan
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - P Meybohm
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - T Riese
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
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Hoppe K, Schwermer K, Dopierała M, Kałużna M, Hoppe A, Chou JTT, Oko A, Pawlaczyk K. Can Overnutrition Lead to Wasting?-The Paradox of Diabetes Mellitus in End-Stage Renal Disease Treated with Maintenance Hemodialysis. Nutrients 2022; 14:nu14020247. [PMID: 35057428 PMCID: PMC8779228 DOI: 10.3390/nu14020247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/23/2021] [Accepted: 12/30/2021] [Indexed: 12/14/2022] Open
Abstract
Background: The population of end-stage renal disease (ESRD) patients with diabetes mellitus (DM) may be at increased risk of protein energy wasting (PEW). The aim of the study was to investigate the impact of DM on selected indicators of PEW in the ESRD population that was undergoing maintenance hemodialysis (MHD). Methods: A total of 515 MHD patients were divided into two subgroups with and without DM. The evaluation of diet composition, Charlson Comorbidity Index (CCI), SGA, and laboratory and BIS analyses were performed. All-cause and cardiovascular mortality was recorded. Results: DM patients had lower albumin (3.93 (3.61–4.20) vs. 4.10 (3.80–4.30) g/dL, p < 0.01), total cholesterol (158 (133–196) vs. 180 (148–206) mg/dL, p < 0.01), and creatinine (6.34 (5.08–7.33) vs. 7.12 (5.70–8.51) mg/dL, p < 0.05). SGA score (12.0 (10.0–15.0) vs. 11.0 (9.0–13.0) points, p < 0.001), BMI (27.9 (24.4–31.8) vs. 25.6 (22.9–28.8) kg/m2, p < 0.001), fat tissue index (15.0 (11.4–19.6) vs. 12.8 (9.6–16.0) %, p < 0.001), and overhydration (2.1 (1.2–4.1) vs. 1.8 (0.7, 2.7) L, p < 0.001) were higher in the DM group. Increased morbidity, reflected in the CCI and mortality—both all-cause and cardiovascular—were observed in DM patients. Conclusions: Hemodialysis recipients with DM experience overnutrition with a paradoxically higher predisposition to PEW, expressed by a higher SGA score and lower serum markers of nutrition. This population is also more comorbid and is at higher risk of death, including from cardiovascular causes.
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Affiliation(s)
- Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (M.D.); (J.T.-T.C.); (A.O.)
- Correspondence: (K.H.); (K.P.); Tel.: +48-618-691-610 (K.P.)
| | - Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (M.D.); (J.T.-T.C.); (A.O.)
| | - Mikołaj Dopierała
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (M.D.); (J.T.-T.C.); (A.O.)
| | - Małgorzata Kałużna
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland;
| | - Anna Hoppe
- Department of Haematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60-569 Poznań, Poland;
| | - Jadzia Tin-Tsen Chou
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (M.D.); (J.T.-T.C.); (A.O.)
| | - Andrzej Oko
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (M.D.); (J.T.-T.C.); (A.O.)
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (M.D.); (J.T.-T.C.); (A.O.)
- Correspondence: (K.H.); (K.P.); Tel.: +48-618-691-610 (K.P.)
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Hoppe A, Rupa-Matysek J, Małecki B, Dytfeld D, Hoppe K, Gil L. Risk Factors for Catheter-Related Thrombosis in Multiple Myeloma Patients Undergoing Autologous Stem Cell Transplantation. Medicina (Kaunas) 2021; 57:medicina57101020. [PMID: 34684057 PMCID: PMC8537595 DOI: 10.3390/medicina57101020] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/18/2021] [Accepted: 09/22/2021] [Indexed: 12/21/2022]
Abstract
Background and Objectives: Cancer associated thrombosis (CAT) is a common complication of neoplasms. Multiple myeloma (MM) carries one of the highest risks of CAT, especially in the early phases of treatment. Autologous stem cell transplantation (ASCT) as the standard of care in transplant-eligible patients with MM carries a risk of catheter-related thrombosis (CRT). The aim of this study was identification of the risk factors of CRT in MM patients undergoing ASCT in 2009–2019. Materials and Methods: We retrospectively analyzed patients with MM undergoing ASCT. Each patient had central venous catheter (CVC) insertion before the procedure. The clinical symptoms of CRT (edema, redness, pain in the CVC insertion area) were confirmed with Doppler ultrasound examination. We examined the impacts of four groups of factors on CRT development: (1) patient-related: age, gender, Body Mass Index (BMI), obesity, Charlson comorbidity index, hematopoietic stem cell transplantation comorbidity index, renal insufficiency, and previous thrombotic history; (2) disease-related: monoclonal protein type, stage of the disease according to Salmon–Durie and International Staging System, number of prior therapy lines, and MM response before ASCT; (3) treatment-related: melphalan dose, transplant-related complications, and duration of post-ASCT neutropenia; (4) CVC-related: location, time from placement to removal. Results: Symptomatic CRT was present in 2.5% (7/276) of patients. Univariate analysis showed an increased risk of CRT in patients with a catheter-related infection (OR 2.4, 95% CI; 1.109–5.19, p = 0.026), previous thrombotic episode (OR 2.49, 95% CI; 1.15–5.39, p = 0.021), previous thrombotic episode on initial myeloma treatment (OR 2.75, 95% CI; 1.15–6.53, p = 0.022), and gastrointestinal complications of ASCT such as vomiting and diarrhea (OR 3.87, 95% CI; 1.57–9.53, p = 0.003). In multivariate analysis, noninfectious complications were associated with higher CRT incidence (OR 2.75, 95% CI; 1.10–6.19, p = 0.031). Conclusions: The incidence of symptomatic CRT in ASCT in MM was relatively low. Previous thrombotic events, especially during the induction of myeloma treatment, increased CRT risk during ASCT. Dehydration following gastrointestinal complications may predispose to higher CRT incidence.
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Affiliation(s)
- Anna Hoppe
- Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60-569 Poznan, Poland; (J.R.-M.); (B.M.); (D.D.); (L.G.)
- Correspondence: ; Tel.: +48-618549571
| | - Joanna Rupa-Matysek
- Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60-569 Poznan, Poland; (J.R.-M.); (B.M.); (D.D.); (L.G.)
| | - Bartosz Małecki
- Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60-569 Poznan, Poland; (J.R.-M.); (B.M.); (D.D.); (L.G.)
| | - Dominik Dytfeld
- Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60-569 Poznan, Poland; (J.R.-M.); (B.M.); (D.D.); (L.G.)
| | - Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznan, Poland;
| | - Lidia Gil
- Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60-569 Poznan, Poland; (J.R.-M.); (B.M.); (D.D.); (L.G.)
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Schwermer K, Hoppe K, Kałużna M, Dopierała M, Olszewska M, Nealis J, Łukawiecka A, Oko A, Pawlaczyk K. Overhydration as a modifiable cardio-vascular risk factor in patients undergoing hemodialysis. Pol Arch Intern Med 2021; 131:819-829. [PMID: 34351089 DOI: 10.20452/pamw.16071] [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] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Introduction Cardio-vascular mortality in end-stage renal disease patients remains high despite advancement in dialysis techniques. This can be attributed to a number of traditional and non-traditional risk factors. Overhydration seems to be one of the promising non-traditional cardio-vascular risk factors to target in order to improve the survival. Objectives The aim of this study was to assess the influence of chronic overhydration and its dynamic changes on cardio-vascular and all-cause morbidity and mortality in the group of hemodialyzed patients. Patients and methods The study has been conducted on a total number of 511 patients. Hydration was assessed with whole-body bioimpedance spectroscopy. The entire cohort has been divided into 4 subgroups according to initial hydration value. Additionally, patients with at least 2 observation visits (n = 277) have been assigned to 4 subgroups created with respect to hydration change-over-time. Results Statistical analysis showed that male gender (P <0.001), diabetes (P <0.001), heart insufficiency (P < 0.001), smoking (P = 0.049) and cerebrovascular incidents (P = 0.007) were significant risk factors for overhydration. Cardiovascular toxicity of overhydration was reflected with elevated levels of NT-proBNP (P <0.001) and cTnT (P <0.001). Albumin and total cholesterol values were the lowest in highly overhydrated subgroups (P <0.001) showing the prevalence of malnutrition. Mortality rate was significantly lower in groups of normal hydration and mild overhydration (P <0.001), as well as of patients with stable low or descending overhydration levels (P = 0.002). Conclusion We can state that the degree of overhydration of hemodialyzed patients is significantly associated with the incidence of cardiovascular complications and affects the prognosis in end-stage renal disease.
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Affiliation(s)
- Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Małgorzata Kałużna
- Department of Endocrinology and Metabolic Diseases, Poznan University of Medical Sciences, Poznań, Poland
| | - Mikołaj Dopierała
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Marta Olszewska
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Justin Nealis
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Andżelika Łukawiecka
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Andrzej Oko
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland.
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Kałużna M, Pawlaczyk K, Schwermer K, Hoppe K, Yusuf Ibrahim A, Czlapka-Matyasik M, Wrotkowska E, Ziemnicka K, Oko A, Ruchała M. Is Preptin a New Bone Metabolism Parameter in Hemodialysis Patients? Life (Basel) 2021; 11:341. [PMID: 33921361 PMCID: PMC8069327 DOI: 10.3390/life11040341] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/26/2021] [Accepted: 04/04/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Preptin is a bone-anabolic pancreatic peptide hormone. Its role in bone metabolism has been studied in rats and in patients with diabetes, but its levels and significance in bone metabolism in hemodialyzed (HD) patients is unknown. METHODS The relationships between preptin and anthropometric and biochemical parameters related to bone metabolism were studied in 73 patients on chronic hemodialysis (48 males, 25 females; mean age of 57 years; HD vintage of 69.7 months). Of these subjects, 36 patients had diabetes or impaired glucose tolerance (DM/IGT), and 37 patients had normal glucose tolerance (NGT). Dual-energy X-ray absorptiometry of the femoral neck and lumbar spine were also performed. RESULTS No differences were observed in preptin levels between DM/IGT and NGT HD patients. Preptin was positively correlated with HD vintage (r = 0.312, p = 0.007). Negative correlations between preptin and bone mineral density (BMD), T-score, and Z-score in the lumbar spine (L2-L4) were observed (r = -0.319, p = 0.009; r = -0.341, p = 0.005; r = -0.375, p = 0.002). Preptin was positively correlated with parathormone (PTH) levels (r = 0.379, p < 0.001) and osteocalcin levels (r = 0.262, p = 0.027). CONCLUSIONS The results indicate that preptin may reflect on bone and mineral metabolism disturbances seen in HD patients. The significant correlation of preptin with PTH and osteocalcin suggests that preptin may be important in indirect measurement of bone turnover in HD patients.
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Affiliation(s)
- Małgorzata Kałużna
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (M.K.); (E.W.); (K.Z.); (M.R.)
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (K.H.); (A.Y.I.); (A.O.)
| | - Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (K.H.); (A.Y.I.); (A.O.)
| | - Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (K.H.); (A.Y.I.); (A.O.)
| | - Aisha Yusuf Ibrahim
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (K.H.); (A.Y.I.); (A.O.)
| | | | - Elżbieta Wrotkowska
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (M.K.); (E.W.); (K.Z.); (M.R.)
| | - Katarzyna Ziemnicka
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (M.K.); (E.W.); (K.Z.); (M.R.)
| | - Andrzej Oko
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (K.S.); (K.H.); (A.Y.I.); (A.O.)
| | - Marek Ruchała
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznań, Poland; (M.K.); (E.W.); (K.Z.); (M.R.)
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Kałużna M, Pawlaczyk K, Schwermer K, Hoppe K, Człapka-Matyasik M, Ibrahim AY, Sawicka-Gutaj N, Minczykowski A, Ziemnicka K, Oko A, Ruchała M. Adropin and irisin: New biomarkers of cardiac status in patients with end-stage renal disease? A preliminary study. ADV CLIN EXP MED 2019; 28:347-353. [PMID: 30525316 DOI: 10.17219/acem/81538] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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] [Indexed: 11/24/2022]
Abstract
BACKGROUND The new polypeptide hormones adropin and irisin have a broad impact on human metabolism and energy homeostasis. They could be potential biomarkers of cardiac injury. In end-stage renal disease (ESRD), the clinical importance of adropin and irisin is yet to be investigated. OBJECTIVES The aim of this study was to determine the relationship between these peptides and cardiac status in ESRD patients. MATERIAL AND METHODS Seventy-nine ESRD patients on hemodialysis (HD), peritoneal dialysis (PD) or after renal transplantation (Tx), and 40 healthy, ageand sex-matched controls (CON) were included in this study. Serum concentrations of adropin and irisin were measured with enzyme-linked immunosorbent assay (ELISA). Cardiac status was estimated by transthoracic echocardiography and the plasma concentration of N-terminal pro-brain natriuretic peptide (NT-proBNP) and cardiac troponin T (cTnT). RESULTS The levels of irisin were significantly lower in HD patients as compared to CON. During HD sessions, the concentrations of adropin did not change significantly, whereas the concentrations of irisin increased with borderline significance. Positive correlations were evident between adropin concentration and cTnT as well as NT-proBNP. Adropin was also correlated with left ventricular systolic internal diameter (LVIDs) (r = 0.375, p = 0.045) and relative wall thickness (RWT) (r = -0.382, p = 0.034). Irisin was correlated with right ventricular diameter (RVd) (r = -0.363, p = 0.045). No correlations were found between irisin and adropin, and blood pressure (BP) measurements. CONCLUSIONS Adropin could be a new candidate marker of cardiac dysfunction in HD patients. The cause of low levels of irisin found in HD patients is still unclear. These 2 myokines should be further investigated as potential prognostic markers of cardiac status in HD patients.
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Affiliation(s)
- Małgorzata Kałużna
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | | | - Aisha Yusuf Ibrahim
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Nadia Sawicka-Gutaj
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Andrzej Minczykowski
- Department of Cardiology - Intensive Therapy, Poznan University of Medical Sciences, Poland
| | - Katarzyna Ziemnicka
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Andrzej Oko
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Marek Ruchała
- Department of Endocrinology, Metabolism and Internal Diseases, Poznan University of Medical Sciences, Poland
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Sosinska-Zawierucha P, Mackowiak B, Begier-Krasinska B, Hoppe K, Breborowicz A. L-2-oxothiazolidine-4-carboxylic acids slow down dialysate-induced senescence in human peritoneal mesothelial cells. J Physiol Pharmacol 2019; 69. [PMID: 30802216 DOI: 10.26402/jpp.2018.6.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 12/30/2018] [Indexed: 11/03/2022]
Abstract
Peritoneal dialysis induces an intraperitoneal inflammatory reaction, which in the long term may cause deterioration of the peritoneal structure and function as the dialysis membrane. We studied the effect of the overnight effluent dialysate from patients on chronic peritoneal dialysis on aging of the human peritoneal mesothelial cells in an in vitro model of replicative cellular senescence. In the control group cells were cultured in the standard medium and in the studied groups in culture medium mixed 1:1 v/v with the dialysate ± L-2-oxothiazolodine-4-carboxylic acid 1 mmol/L (OTZ). OTZ was used as the precursor for the synthesis of glutathione in these cells. Dialysate accelerated senescence of the mesothelial cells as reflected by elongation of their population doubling time, reduced expression of KI-67 gene, and increased β-galactosidase activity. Also, expression of the genes regulating the production of the inflammatory mediators (interleukin-6, monocyte chemoattractant protein-1, metalloproteinase-2, hyaluronan), proangiogenic (VEGF) and profibrotic (fibronectin) factors was increased in that group. At the same time, these cells secreted more inflammatory mediators. Simultaneous treatment of the cells with the dialysate and OTZ slowed down their senescence, whose intensity was similar to that in the control group. The results presented in this manuscript prove that the intraperitoneal inflammatory reaction induced by repeated infusions of the dialysis fluid accelerates the senescence of the mesothelial cells, which may result in fibrosis and neoangiogenesis within the peritoneum. Simultaneous supplementation of the cells with a glutathione precursor (OTZ) may prevent the development of these pathological changes.
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Affiliation(s)
- P Sosinska-Zawierucha
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland
| | - B Mackowiak
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland
| | - B Begier-Krasinska
- Department of Hypertension, Angiology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - K Hoppe
- Department of Nephrology, Poznan University of Medical Sciences, Poznan, Poland
| | - A Breborowicz
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland.
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Paulus Compart D, Anele U, Engel C, Vyas D, Kim D, Hoppe K. PSXIV-12 Impact of prebiotic and probiotic feed additive blends on bovine respiratory disease, E. coli O157:H7 shedding, and performance of receiving steers. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - U Anele
- North Carolina Agricultural and Technical State,Greensboro, NC, United States
| | - C Engel
- North Dakota State University, Carrington Research Extension Center,Carrington, ND, United States
| | - D Vyas
- University of Florida,Gainesville, FL, United States
| | - D Kim
- University of Florida,Gainesville, FL, United States
| | - K Hoppe
- North Dakota State University,Carrington, ND, United States
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Hoppe K, Schwermer K, Kawka A, Klysz P, Baum E, Kaluzna M, Sikorska D, Scigacz A, Lindholm B, Pawlaczyk K, Oko A. Dialysis vintage stratified comparison of body composition, hydration and nutritional state in peritoneal dialysis and hemodialysis patients. Arch Med Sci 2018; 14:807-817. [PMID: 30002698 PMCID: PMC6040140 DOI: 10.5114/aoms.2016.61902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 05/17/2016] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Body mass decomposition and hydration state imbalances affect patients on maintenance dialysis. We compared body composition, hydration and nutritional state of patients on peritoneal dialysis (PD) and hemodialysis (HD) based on dialysis vintage (DV). MATERIAL AND METHODS Three hundred and fifty-nine prevalent patients on HD (n = 301) and PD (n = 58) were divided into 3 subgroups depending on DV: < 2 years HD (n = 41) and PD (n = 28), 2-4 years HD (n = 111) and PD (n = 17), > 4 years HD (n = 149) and PD (n = 13). Bioimpedance analysis delivered data including overhydration (OH), Lean (LTM) and adipose lipids mass (FAT). Other measurements included daily diuresis (DD), subjective global assessment (SGA) and serum albumin (alb), C-reactive protein (CRP) and total cholesterol (TChol), and hemoglobin (Hb). RESULTS Dialysis vintage < 2 years. Hemodialysis patients were older (65.5 ±18.5 vs. 50.9 ±17.1; p < 0.01) with a higher mortality (28 vs. 1; p < 0.01) and OH (8.0 ±4.3 vs. 1.6 ±3.1; p < 0.001). Hemoglobin (10.6 ±1.5 vs. 11.8 ±1.7; p < 0.05), TChol (180.2 ±47.0 vs. 211.7 ±46.3; p < 0.05), DD (871 ±729 vs. 1695 ±960; p < 0.001) and LTM (46.5 ±12.9 vs. 53.8 ±14.4; p < 0.05) were lower on HD. Dialysis vintage 2-4 years: when compared to PD, HD patients had higher OH (11.7 ±5.9 vs. 2.1 ±3.2; p < 0.001) and lower Hb (10.8 ±1.5 vs. 11.9 ±1.4; p < 0.01). Dialysis vintage > 4 years: compared to PD, HD patients had higher LTM (44.3 ±11.7 vs. 38.6 ±7.9; p < 0.05) and lower FAT (34.4 ±11.1 vs. 42.8 ±6.4; p < 0.01). CONCLUSIONS Dialysis patients' body composition depends on dialysis modality and DV. Dialysis vintage < 2 years is associated with better hydration, nutritional state, and survival in PD patients, but longer DV reduces these benefits. Dialysis vintage > 4 years associated with similar hydration and mortality in both PD and HD while body composition was better on HD.
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Affiliation(s)
- Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Anna Kawka
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Patrycja Klysz
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Ewa Baum
- Department of Philosophy and Bioethics, Poznan University of Medical Sciences, Poznan, Poland
| | - Malgorzata Kaluzna
- Department of Endocrinology, Metabolic Disorders and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Dorota Sikorska
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Anna Scigacz
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Bengt Lindholm
- Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
- Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Andrzej Oko
- Department of Nephrology, Transplantology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
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Kałużna M, Hoppe K, Schwermer K, Ibrahim AY, Pawlaczyk K, Ziemnicka K. Preanalytical, analytical, and postanalytical errors in the measurement of irisin levels. Authors' reply. Pol Arch Intern Med 2017; 127:643-644. [DOI: 10.20452/pamw.4113] [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: 11/23/2022]
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Hoppe K, Szalek A, Schwermer K, Kryszan K, Kawka A, Olszewska M, Baum E, Pawlaczyk K, Oko A. SP507IS SOLUBLE ALPHA-KLOTHO A NOVEL SENSITIVE MARKER OF PROGNOSIS FOR PATIENTS ON MAINTENANCE PERITONEAL DIALYSIS? Nephrol Dial Transplant 2017. [DOI: 10.1093/ndt/gfx151.sp507] [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: 11/12/2022] Open
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Hoppe K, Schwermer K, Olewicz-Gawlik A, Klysz P, Kawka A, Baum E, Sikorska D, Ścigacz K, Roszak M, Lindholm B, Pawlaczyk K, Oko A. Dialysis vintage and cardiovascular injury as factors influencing long-term survival in peritoneal dialysis and hemodialysis. ADV CLIN EXP MED 2017; 26:251-258. [PMID: 28791842 DOI: 10.17219/acem/64936] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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] [Indexed: 11/24/2022]
Abstract
BACKGROUND Cardiovascular (CV) incidents are the major cause of mortality in maintenance dialysis (MD) patients undergoing peritoneal dialysis (PD) or hemodialysis (HD). CV injury indicators may be useful to investigate the dialysis modality influence on survival. OBJECTIVES The aim of this study was to compare selected laboratory and echocardiographic (ECHO) markers of CV injury in terms of dialysis vintage (DV), CV-related mortality and all-cause mortality. MATERIAL AND METHODS The study involved 301 patients on HD (n = 301) and PD (n = 58), who were divided into subgroups according to DV. The subjects' medical histories included diabetes mellitus (DM), myocardial infarction (MI), stroke, CV deaths and deaths from non-CV causes. Their CV parameters were measured with ECHO for the left ventricle ejection fraction (EF), posterior wall (LVW) and interventricular septum (IVS). Serum analyses of cardiac troponin T (TnT) and N-terminal pro-brain natriuretic peptide (BNP) were also carried out. RESULTS In the subgroup with a DV of 4 years, the PD and HD patients were of a similar age, and had similar mortality and morbidity rates and CV markers, except for thicker IVS in the HD patients. CONCLUSIONS Focusing on the data analysis based on mortality, and both laboratory and echocardiographic markers of cardiovascular injury, PD seems to be a more favorable method of dialysis. The advantage of PD was noted in subjects with a DV < 2 years. HD showed no outcome benefit over PD in longer DV.
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Affiliation(s)
- Krzysztof Hoppe
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Krzysztof Schwermer
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Anna Olewicz-Gawlik
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Patrycja Klysz
- Department of Pathophysiology, Poznan University of Medical Sciences, Poland
| | - Anna Kawka
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Ewa Baum
- Department of Philosophy and Bioethics, Poznan University of Medical Sciences, Poland
| | - Dorota Sikorska
- Department of Pathophysiology, Poznan University of Medical Sciences, Poland
| | - Katarzyna Ścigacz
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Magdalena Roszak
- Department of Biostatistics, Poznan University of Medical Sciences, Poland
| | - Bengt Lindholm
- Karolinska Institutet, Clinical Science, Intervention and Technology, Stockholm, Sweden
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
- Karolinska Institutet, Clinical Science, Intervention and Technology, Stockholm, Sweden
| | - Andrzej Oko
- Department of Nephrology, Transplantology and Internal Diseases, Poznan University of Medical Sciences, Poland
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Hoppe K, Groten T, Weschenfelder F, Schleußner E. Risikofaktor Adipositas – Retrospektive Analyse der Jenaer Geburtenkohorte der Jahre 2003 bis 2012. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1593294] [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] Open
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Kałużna M, Hoppe K, Schwermer K, Ibrahim AY, Pawlaczyk K, Ziemnicka K. Adropin and irisin levels in relation to nutrition, body composition, and insulin resistance in patients with end-stage renal disease on chronic hemodialysis and peritoneal dialysis. ACTA ACUST UNITED AC 2016; 126:474-82. [PMID: 27452672 DOI: 10.20452/pamw.3466] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Newly discovered myokines, adropin, and irisin, are regulators of energy homeostasis and metabolism in humans. In end-stage renal disease (ESRD), the significance and role of irisin and adropin as metabolism regulators are still unclear. OBJECTIVES The aim of this study was to evaluate serum adropin and irisin levels and establish their relation to insulin resistance, nutritional status, and hydration status in patients on chronic hemodialysis (HD) and on peritoneal dialysis (PD). PATIENTS AND METHODS The study consisted of 71 subjects, including 48 patients (18 women, 30 men; median age, 56.5 years; range, 26-84 years) either on HD (n = 41) or PD (n = 7) and 36 healthy controls matched for age and sex. We measured the serum levels of adropin, irisin, creatinine, albumin, glucose, and insulin, as well as the plasma levels of lipids. The bioimpedance method was used to evaluate the body composition and overhydration in patients with ESRD. RESULTS Irisin levels were significantly lower in patients with ESRD compared with controls, but there were no differences in adropin levels between both study groups. Adropin levels were inversely correlated with body mass, lean tissue mass, total, intracellular, and extracellular water, and albumin concentrations in patients with ESRD. Irisin levels were positively correlated with glucose levels and homeostasis model assessment of insulin resistance. No significant correlations were observed between adropin and irisin concentrations and overhydration. CONCLUSIONS Adropin may be considered as a new marker of nutritional status in patients with ESRD. The significance and cause of low irisin levels characteristic for these patients are still unclear. Adropin and irisin should be further investigated as possible markers of cachexia and insulin resistance in patients with ESRD.
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Hoppe K, Groten T, Weschenfelder F, Schleußner E. Adipositas als Risikofaktor für Schwangerschaftskomplikation – Retrospektive Analyse der Jenaer 10 Jahres Geburtenkohorte. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1583797] [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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Hoppe K, Schwermer K, Kawka A, Klysz P, Baum E, Radziszewska D, Lindholm B, Pawlaczyk K, Oko A. MP655PERITONEAL (PD) OR HEMODIALYSIS (HD) - DIALYSIS VINTAGE DEPENDENT COMPARISON OF BODY COMPOSITION, HYDRATION AND NUTRITION. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw199.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Standard procedures to coat gold nanorods (AuNR) with poly(ethylene glycol) (PEG)-based ligands are not reliable and high PEG-grafting densities are not achieved. In this work, the ligand exchange of AuNR with PEGMUA, a tailored PEG-ligand bearing a C10 alkylene spacer, is studied. PEGMUA provides AuNR with very high stability against oxidative etching with cyanide. This etching reaction is utilized to study the ligand exchange in detail. Ligand exchange is faster, less ligand consuming and more reproducible with assisting chloroform extraction. Compared to PEG ligands commonly used, PEGMUA provides much higher colloidal and chemical stability. Further analyses based on NMR-, IR- and UV/Vis-spectroscopy reveal that significantly higher PEG-grafting densities, up to ∼3 nm(-2), are obtained with PEGMUA. This demonstrates how the molecular structure of the PEG ligand can be used to dramatically improve the ligand exchange and to synthesize PEGylated AuNR with high chemical and colloidal stability and high PEG grafting densities. Such AuNR are especially interesting for applications in nanomedicine.
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Affiliation(s)
- F Schulz
- Institute for Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany.
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Hoppe K, Schwermer K, Klysz P, Radziszewska D, Sawatiuk P, Baum E, Kaczmarek J, Roszak M, Kaluzna M, Lindholm B, Pawlaczyk K, Oko A. Cardiac Troponin T and Hydration Status as Prognostic Markers in Hemodialysis Patients. Blood Purif 2015; 40:139-45. [DOI: 10.1159/000376603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 01/30/2015] [Indexed: 11/19/2022]
Abstract
This study aimed to assess cardiac troponin T (cTnT) and hydration state as cardiovascular (CV) risk markers in hemodialysis (HD) patients. Two hundred and forty one patients were divided according to HD vintage into two groups: SV (HD ≤24 months) and LV. Water balance was assessed with overhydration (OH%; bioimpedance analysis) and daily diuresis (DD); CV dysfunction with cTnT and heart ultrasound; nutrition with subjective global assessment (SGA), cholesterol (TC) and albumin. SV had lower OH% (2.8 vs. 3.5, p < 0.05) and higher DD (1,161 vs. 637 ml, p < 0.001), while LV had higher cTnT (0.1 ± 0.04 vs. 0.1 ± 0.07 ng/ml, p < 0.05) and lower interventricular septum thickness (IVS; 13.4 vs. 14.5 mm, p < 0.05). Nutritional state as reflected by lower TC was worse in LV (184.7 vs. 169.5 mg/dl, p < 0.05). Mortality was higher in patients in the LV group (15 vs. 27 deaths, p < 0.05). OH% correlated inversely with albumin (r = -0.36, p < 0.001), TC (r = -0.31, p < 0.001) and cTnT (r = -0.4, p < 0.001). cTnT correlated positively with IVS (r = 0.39, p < 0.001), SGA (r = 0.23, p = 0.001) and mortality rate (r = 0.21, p < 0.01), and negatively with DD (r = -0.34, p < 0.001) and albumin (r = -0.25, p < 0.001). Longer dialysis vintage associates with CV dysfunction, overhydration and increased mortality, which may be predicted with OH% and cTnT. Video Journal Club ‘Cappuccino with Claudio Ronco' at http://www.karger.com/?doi=376603.
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Schwermer K, Hoppe K, Radziszewska D, Kłysz P, Sawatiuk P, Nealis J, Kałużna M, Kaczmarek J, Baum E, Lindholm B, Pawlaczyk K, Oko A. N‑terminal pro‑B-type natriuretic peptide as a marker of hypervolemia and predictor of increased mortality in patients on hemodialysis. ACTA ACUST UNITED AC 2015; 125:560-9. [PMID: 26140435 DOI: 10.20452/pamw.2969] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION N‑terminal pro‑B‑type natriuretic peptide (NT‑proBNP) is an established biomarker of heart failure in the general population. However, its diagnostic value is unclear in hemodialysis (HD) patients owing to renal insufficiency. OBJECTIVES The aim of the study was to establish the usefulness of NT‑proBNP for hydration assessment and the relation of NT‑proBNP to the nutritional state and prognosis of survival. PATIENTS AND METHODS In 321 HD patients (206 men; mean age, 65.1 ±21.4 years), we assessed NT‑proBNP levels, overhydration (OHBIA), and the indices of the nutritional state (using a bioimpedance analysis [BIA]) in relation to cardiac troponin T (cTnT), hemoglobin, albumin, total cholesterol (TC), and C‑reactive protein (CRP) levels. The efficacy of HD was assessed using Kt/V, weekly HD dose, and HD session ultrafiltration. The cohort was divided into NT‑proBNP quartiles. Patients with 2 NT‑proBNP measurements were categorized also into change‑over‑time subgroups. A follow‑up lasted for a median period of 23.8 ±26.3 months. RESULTS Relative OHBIA increased across the NT‑proBNP quartiles (Q1/Q2/Q3/Q4, 1.31% ±2.56%/2.06% ±2.35%/2.92% ±2.97%/4.62% ±4.22%; P <0.0001). NT‑proBNP was also closely associated with other OH parameters. In addition, there was a significant correlation between NT‑proBNP and cTnT (r = 0.55; P <0.0001). Body mass index (BMI) and fat tissue index (FTI) decreased across the quartiles (BMI, 28.5 ±7.7/26.0 ±6.6/25.8 ±5.4/23.7 ±5.5 kg/m2; FTI, 14.4 ±9.0/14.1 ±7.3/12.3 ±6.8/11.6 ±6.1; P <0.001). The highest albumin level was present in Q1 (4.10 ±0.63/3.99 ±0.51/3.90 ±0.62/3.97 ±0.78 g/dl; P = 0.006). The TC level was the lowest in Q4 (190 ±60/169 ±56/173 ±51/153 ±56 mg/dl; P = 0.002). The hemoglobin level decreased across the quartiles (11.44 ±1.25/11.15 ±2.50/10.79 ±1.51/10.45 ±1.67 g/dl; P = 0.0006). The differences in CRP levels and HD‑related parameters were nonsignificant. During the follow‑up, 97 deaths were recorded (11/26/21/39, P <0.0001). CONCLUSIONS NT‑proBNP seems to be a useful biomarker of hypervolemia in HD patients. Nevertheless, it has to be interpreted with regard to the patient's individual residual renal function and cardiovascular status.
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Hoppe K, Schwermer K, Klysz P, Baum E, Polcyn-Adamczak M, Fidera M, Kunysz D, Pawlaczyk K, Lindholm B, Oko A. FP490DO HYDRATION STATE FLUCTUACTIONS AFFECT HEMODIALYZED PATIENTS’ RISK OF COMPLICATIONS AND MORTALITY RATE? Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv179.19] [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: 11/12/2022] Open
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Schwermer K, Hoppe K, Kunysz D, Fidera M, Klysz P, Kaluzna M, Pawlaczyk K, Oko A. FP618HIGH RESIDUAL DIURESIS DECREASES MORTALITY IN HEMODIALYZED PATIENTS. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv181.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Fascia is composed of collagenous connective tissue surrounding and interpenetrating skeletal muscle, joints, organs, nerves, and vascular beds. Fascial tissue forms a whole-body, continuous three-dimensional viscoelastic matrix of structural support. The classical concept of its mere passive role in force transmission has recently been disproven. Fascial tissue contains contractile elements enabling a modulating role in force generation and also mechanosensory fine-tuning. This hypothesis is supported by in vitro studies demonstrating an autonomous contraction of human lumbar fascia and a pharmacological induction of temporary contraction in rat fascial tissue. The ability of spontaneous regulation of fascial stiffness over a time period ranging from minutes to hours contributes more actively to musculoskeletal dynamics. Imbalance of this regulatory mechanism results in increased or decreased myofascial tonus, or diminished neuromuscular coordination, which are key contributors to the pathomechanisms of several musculoskeletal pathologies and pain syndromes. Here, we summarize anatomical and biomechanical properties of fascial tissue with a special focus on fascial dysfunctions and resulting clinical manifestations. Finally, we discuss current and future potential treatment options that can influence clinical manifestations of pain syndromes associated with fascial tissues.
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Affiliation(s)
- W Klingler
- Fascia Research Group, Division of Neurophysiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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Hoppe K, Rodgers GJ. Percolation on fitness-dependent networks with heterogeneous resilience. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 90:012815. [PMID: 25122350 DOI: 10.1103/physreve.90.012815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Indexed: 06/03/2023]
Abstract
The ability to understand the impact of adversarial processes on networks is crucial to various disciplines. The objects of study in this article are fitness-driven networks. Fitness-dependent networks are fully described by a probability distribution of fitness and an attachment kernel. Every node in the network is endowed with a fitness value and the attachment kernel translates the fitness of two nodes into the probability that these two nodes share an edge. This concept is also known as mutual attractiveness. In the present article, fitness does not only serve as a measure of attractiveness, but also as a measure of a node's robustness against failure. The probability that a node fails increases with the number of failures in its direct neighborhood and decreases with higher fitness. Both static and dynamic network models are considered. Analytical results for the percolation threshold and the occupied fraction are derived. One of the results is that the distinction between the dynamic and the static model has a profound impact on the way failures spread over the network. Additionally, we find that the introduction of mutual attractiveness stabilizes the network compared to a pure random attachment.
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Affiliation(s)
- K Hoppe
- Department of Mathematical Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
| | - G J Rodgers
- Department of Mathematical Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
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Hoppe K, Schleip R, Lehmann-Horn F, Jäger H, Klingler W. Contractile elements in muscular fascial tissue - implications for in-vitro contracture testing for malignant hyperthermia. Anaesthesia 2014; 69:1002-8. [DOI: 10.1111/anae.12752] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2014] [Indexed: 01/11/2023]
Affiliation(s)
- K. Hoppe
- Department of Anaesthesiology; Ulm University; Ulm Germany
- Department of Anaesthesia; Intensive Care Medicine and Pain Therapy; Frankfurt University; Frankfurt am Main Germany
| | - R. Schleip
- Division of Neurophysiology; Ulm University; Ulm Germany
| | | | - H. Jäger
- Division of Neurophysiology; Ulm University; Ulm Germany
| | - W. Klingler
- Division of Neurophysiology; Ulm University; Ulm Germany
- Department of Neuroanaesthesiology; Neurosurgical University; Guenzburg Germany
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Lemoine S, Fournier T, Kocevar G, Belloi A, Ibarrola D, Sappey-Marinier D, Juillard L, Kaysen G, Usvyat L, Grassmann A, Marcelli D, Pecoits-Filho R, Marelli C, Kooman J, Van Der Sande F, Haviv Y, Power A, Kotanko P, Migliori M, Cantaluppi V, Medica D, Paoletti S, Panichi V, Kuragano T, Yahiro M, Kida A, Nagasawa Y, Hasuike Y, Nanami M, Nakanishi T, Garneata L, Slusanschi O, Dragomir DR, Corbu-Stancu A, Barbulescu C, Mircescu G, Minutolo R, Borrelli S, De Nicola L, Conte G, Basic-Jukic N, Katalinic L, Ivandic E, Kes P, Jelakovic B, Beberashvili I, Sinuani I, Azar A, Shapiro G, Feldman L, Stav K, Sandbank J, Averbukh Z, Bruschetta E, Righetti M, Colombo F, Palmieri N, Prencipe M, Bracchi O, Stefani F, Amar K, Scalia A, Conte F, Rosenberger J, Majernikova M, Kissova V, Straussova Z, Boldizsar J, Cobo G, Di Gioia C, Camacho R, Garcia Lacalle C, Ortega O, Rodriguez I, Mon C, Ortiz M, Herrero J, Oliet A, Vigil A, Gallar P, Kyriazis J, Markaki A, Kourtesi K, Kalymniou M, Vougazianos S, Kyriazis P, Stylianou K, Tanaka H, Tsuneyoshi S, Sawa M, Fujisaki K, Daijo Y, Hristea D, Paris A, Lefrancois G, Volteau C, Savoiu C, Ozenne S, Testa A, Coupel S, Bertho I, Legall MC, Magnard J, Deschamps T, Capusa C, Stoian I, Barbulescu C, Santimbrean C, Dumitru D, Mircescu G, Kato S, Lindholm B, Yuzawa Y, Shiels PG, Hwang JC, Jiang MY, Lu YH, Wang CT, Chiou TTY, Lee YT, Ng HY, Lee CT, Kaminska D, Koscielska-Kasprzak K, Chudoba P, Mazanowska O, Zabinska M, Banasik M, Boratynska M, Lepiesza A, Korta K, Klinger M, Struijk-Wielinga T, Neelemaat F, Slieker T, Koolen M, Ter Wee PM, Weijs PJ\, Tsuchida K, Hirose D, Minakuchi J, Kawashima S, Tomo T, Lee JE, Yun GY, Choi HY, Lee S, Kim W, Jo IY, Ha SK, Kim HJ, Park HC, Migliori M, Scatena A, Cantaluppi V, Rosati A, Pizzarelli F, Panichi V, Shin BC, Kim HL, Chung JH, Malgorzewicz S, Chmmielewski M, Debska-Slizien A, Rutkowski B, Kolesnyk M, Stepanova N, Korol L, Kulizkyi M, Ablogina O, Migal L, Takahashi T, Kitajima Y, Hirano S, Naka A, Ogawa H, Aono M, Sato Y, Hoppe K, Schwermer K, K Ysz P, Kaczmarek J, Baum E, Sikorska D, Radziszewska D, Szkudlarek M, Olejniczak P, Pawlaczyk K, Lindholm B, Oko A, Severova Andreevska G, Trajceska L, Gelev S, Dzekova P, Selim G, Sikole A, Trajceska L, Severova Andreevska G, Rambabova Busletik I, Gelev S, Pavleska Kuzmanovska S, Dzekova Vidimiski P, Selim G, Sikole A, Borrelli S, De Simone E, Laurino S, De Simone W, Ahbap E, Kara E, Basturk T, Sakaci T, Koc Y, Sahutoglu T, Akgol C, Sevinc M, Atan Ucar Z, Unsal A, Girndt M, Fiedler R, Martus P, Pawlak M, Storr M, Boehler T, Templin M, Trojanowicz B, Ulrich C, Glomb M, Liehr K, Werner K, Zickler D, Schindler R, Vishnevskii KA, Gerasimchuk RP, Zemchenkov AY, Moura A, Madureira J, Alija P, Fernandes JC, Oliveira JG, Lopez M, Filgueiras M, Amado L, Sameiro-Faria M, Miranda V, Vieira M, Santos-Silva A, Costa E, Zaluska W, Kotlinska-Hasiec EKH, Zaluska A, Rzecki Z, Zadora P, Dabrowski W, Sikole A, Trajceska L, Amitov V, Busletik IR, Dzekova P, Selim G, Severova Andreevska G, Gelev S, Aicardi Spalloni V, La Milia V, Longhi S, Volo L, Del Vecchio L, Pontoriero G, Locatelli F, Martino F, Scalzotto E, Corradi V, Nalesso F, Zanella M, Brandolan A, Perez De Jose A, Abad S, Vega A, Reque J, Quiroga B, Lopez-Gomez JM, Esteve Simo V, Duarte Gallego V, Moreno Guzman F, Fulquet Nicolas M, Pou Potau M, Saurina Sole A, Carneiro Oliveira J, Ramirez De Arellano Serna M, Ahbap E, Kara E, Basturk T, Koc Y, Sakaci T, Sahutoglu T, Sevinc M, Atan Ucar Z, Unsal A, Van Diepen AT, Hoekstra T, De Mutsert R, Rotmans JI, De Boer M, Suttorp MM, Struijk DG, Boeschoten EW, Krediet RT, Dekker FW, Trigka K, Chouchoulis K, Musso CG, Kaza M, Mpimpi A, Pipili C, Kyritsis I, Douzdampanis P, Streja E, Rezakhani S, Rhee CM, Kalantar-Zadeh K, Streja E, Doshi M, Rhee C, Kovesdy C, Moradi H, Kalantar-Zadeh K, Dantas MA, Resende LL, Silva LF, Matos CM, Lopes GB, Lopes AA, Knap B, Arnol M, Buturovic J, Ponikvar R, Bren A, Codognotto M, Piasentin P, Conte F, Righetti M, Limido A, Tsuchida K, Michiwaki H, Minakuchi J, Kawashima S, Tomo T, Mutsaers HA, Jansen J, Van Den Broek PH, Verweij VG, Van Den Heuvel LP, Hoenderop JG, Masereeuw R, Clari R, Mongilardi E, Vigotti FN, Scognamiglio S, Consiglio V, Nazha M, Avagnina P, Piccoli G, Costelloe SJ, Freeman J, Keane DF, Lindley EJ, Thompson D, Kang GW, Lee IH, Ahn KS. DIALYSIS. PROTEIN-ENERGY WASTING, INFLAMMATION AND OXIDATIVE STRESS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rothuizen TC, Ocak G, Verschuren JJ, Dekker FW, Rabelink TJ, Jukema JW, Rotmans JI, Silva V, Raimann JG, Grassmann A, Marcelli D, Usvyat L, Canaud B, Kotanko P, Pecoits-Filho R, Consortium M, Strippoli GF, Sue YM, Tang CH, Chen TH, Hong CY, Ochi A, Ishimura E, Masuda M, Tsujimoto Y, Okuno S, Tabata T, Nishizawa Y, Inaba M, Moon Ki H, Do Hyoung K, Min Jee H, Hyun K, Wang Soo L, Su-Hyun K, Selim G, Stojceva-Taneva O, Tozija L, Dzekova-Vidimliski P, Trajceska L, Gelev S, Amitov V, Petronievic Z, Sikole A, Kee YK, Kim YL, Han JH, Oh HJ, Park JT, Han SH, Yoo TH, Kang SW, Okute Y, Shoji T, Sonoda M, Kuwamura Y, Tsujimoto Y, Tabata T, Shioi A, Tahara H, Emoto M, Inaba M, El Amrani M, Asserraji M, Benyahia M, Galloway PA, Yiu V, Hiemstra TF, Nilssen C, Zannad F, Jardine A, Schmieder R, Fellstrom B, Holdaas H, Mjoen G, Eftimovska - Otovic N, Babalj - Banskolieva E, Bogdanoska - Kostadinoska S, Grozdanovski R, Silva BC, Freitas GR, Silva VB, Abensur H, Luders C, Pereira BJ, Castro MC, Oliveira RB, Moyses RM, Elias RM, Perez De Jose A, Abad S, Vega A, Reque J, Quiroga B, Lopez-Gomez JM, Sasaki K, Yamguchi K, Hesaka A, Iwahashi E, Sakai S, Fujimoto T, Minami S, Fujita Y, Yokoyama K, Kidir V, Ersoy I, Altuntas A, Inal S, Do an A, Sezer MT, Azar H, Chacra D, Dabar G, Chelala D, Zhao L, Huang S, Liang T, Tang H, Turkmen K, Demirtas L, Akbas EM, Buyuklu M, Bakirci E, Kocyigit I, Ozcelik O, Guney I, Mumajesi S, Velaj A, Idrizi A, Pasko N, Cadri V, Barbullushi M, Bolleku E, Strakosh A, Cenaj A, Kacori V, Zekollari E, Rista E, Dusha D, Belba A, Thereska N, Gelev S, Toshev S, Trajceska L, Pavleska S, Selim G, Dzekova P, Shikole A, Naess H, Fellstrom B, Jardine AG, Schmieder RE, Zannad F, Holdaas H, Mjoen G, Sasaki K, Yamguchi S, Hesaka A, Iwahashi E, Sakai S, Fujimoto T, Minami S, Fujita Y, Yokoyama K, Bilevich O, Bunova S, Semchenko S, Schwermer K, Hoppe K, Klysz P, Baum E, Sikorska D, Radziszewska D, Sawatiuk P, Olejniczak P, Pawlaczyk K, Lindholm B, Oko A, El Amrani M, Asserraji M, Rbaibi A, El Kharass A, Benyahia M, Rroji ( Molla) M, Seferi S, Cafka M, Spahia N, Likaj E, Thereska N, Barbullushi M, Pelletier CC, Jolivot A, Kalbacher E, Panaye M, Bureau Du Colombier P, Juillard L, Burmeister JE, Mosmann CB, Bastos JP, Burmeister BO, Munaro G, Pereira JD, Youssef DW, Rosito GA. DIALYSIS CARDIOVASCULAR COMPLICATIONS 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu175] [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: 11/13/2022] Open
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Vlahu CA, De Graaff M, Struijk DG, Krediet RT, Shin HS, Ryu ES, Choi HS, Ryu DR, Choi KB, Kang DH, Sanchez-Alvarez E, Rodriguez-Suarez C, Galvan-.Hernandez JA, Kim YL, Kee YK, Lee MJ, Oh HJ, Park JT, Han SH, Yoo TH, Kang SW, Zhu F, Abbas SR, Bologa R, Lanto B, Kotanko P, Parikova A, Smit W, Struijk DG, Krediet RT, Rroji ( Molla) M, Seferi S, Cafka M, Thereska N, Huang CC, Wang IK, Shiao YT, Teixeira L, Sousa I, Rodrigues A, Mendonca D, Ueda A, Iwase M, Usui T, Hirayama A, Nagai K, Saito C, Yamagata K, La Milia V, Pontoriero G, Locatelli F, Kim SM, Kim TY, Lee JE, Teta D, Guillodo MP, Kolko-Labadens A, Lasseur C, Levannier M, Panaye M, Fouque D, HAMADA C, Hara K, Kang SH, Cho KH, Park JW, Yoon KW, Do JY, Dogan I, Biro Dr B, Zakar Dr G, Foldine Z, Staudt S, Martins AR, Vizinho R, Branco PQ, Gaspar MA, Barata JD, Sikorska D, Klysz P, Posnik B, Baum E, Hoppe K, Schwermer K, Wanic-Kossowska M, Frankiewicz D, Pawlaczyk K, Lindholm B, Oko A, Busuioc M, Trolliet P, Guerraoui A, Caillette-Beaudoin A, Hallonet P, Yang JO, Gursu M, Topcuoglu D, Koc LK, Yucel L, Sumnu A, Cebeci E, Doner B, Ozkan O, Behlul A, Koc L, Ozturk S, Kazancioglu R, Casas Parra AII, Gonzalez MTT, Sandoval DA, Carlota GC, Grinyo JMM, Tseng CH, Chao CT, Yen CJ, Chiang CK, Hung KY, Huang JW, Al Wakeel JS, Al Ghonaim M, Al Suwaida A, Al Harbi A, Makoshi Z, Abdullah S, Matsushita Y, Basic-Jukic N, Coen-Herak D, Martinovic Z, Radi -Antoli M, Kes P, Wu TJ, Chen JS, Lin SH, Shiang JC, Wu CC, Munteanu D, Gemene M, Mircescu G, Opatrna S, Popperlova A, Tesar V, Rychlik I, Viklicky O, Jin K, Park BS, Jeong HJ, Kim YW, Hogas S, Voroneanu L, Onofriescu M, Nistor I, Apetrii M, Siriopol D, Cujba M, Hogas M, Covic A. PERITONEAL DIALYSIS 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu174] [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: 11/12/2022] Open
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Abstract
Time-varying networks play an important role in the investigation of the stochastic processes that occur on complex networks. The ability to formulate the development of the network topology on the same time scale as the evolution of the random process is important for a variety of applications, including the spreading of diseases. Past contributions have investigated random processes on time-varying networks with a purely random attachment mechanism. The possibility of extending these findings towards a time-varying network that is driven by mutual attractiveness is explored in this paper. Mutual attractiveness models are characterized by a linking function that describes the probability of the existence of an edge, which depends mutually on the attractiveness of the nodes on both ends of that edge. This class of attachment mechanisms has been considered before in the fitness-based complex networks literature but not on time-varying networks. Also, the impact of mutual selection is investigated alongside opinion formation and epidemic outbreaks. We find closed-form solutions for the quantities of interest using a factorizable linking function. The voter model exhibits an unanticipated behavior as the network never reaches consensus in the case of mutual selection but stays forever in its initial macroscopic configuration, which is a further piece of evidence that time-varying networks differ markedly from their static counterpart with respect to random processes that take place on them. We also find that epidemic outbreaks are accelerated by uncorrelated mutual selection compared to previously considered random attachment.
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Affiliation(s)
- K Hoppe
- Department of Mathematical Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
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Smolyarenko IE, Hoppe K, Rodgers GJ. Network growth model with intrinsic vertex fitness. Phys Rev E Stat Nonlin Soft Matter Phys 2013; 88:012805. [PMID: 23944516 DOI: 10.1103/physreve.88.012805] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Indexed: 06/02/2023]
Abstract
We study a class of network growth models with attachment rules governed by intrinsic node fitness. Both the individual node degree distribution and the degree correlation properties of the network are obtained as functions of the network growth rules. We also find analytical solutions to the inverse, design, problems of matching the growth rules to the required (e.g., power-law) node degree distribution and more generally to the required degree correlation function. We find that the design problems do not always have solutions. Among the specific conditions on the existence of solutions to the design problems is the requirement that the node degree distribution has to be broader than a certain threshold and the fact that factorizability of the correlation functions requires singular distributions of the node fitnesses. More generally, the restrictions on the input distributions and correlations that ensure solvability of the design problems are expressed in terms of the analytical properties of their generating functions.
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Affiliation(s)
- I E Smolyarenko
- Department of Mathematical Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
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Yayar O, Buyukbakkal M, Eser B, Yildirim T, Ercan Z, Erdogan B, Kali A, Merhametsiz O, Haspulat A, Akdag I, Ayli MD, Quach T, Tregaskis P, Menahem S, Koukounaras J, Mott N, Walker R, Zeiler M, Santarelli S, Degano G, Monteburini T, Agostinelli RM, Marinelli R, Ceraudo E, Grzelak T, Kramkowska M, Walczak M, Czyzewska K, Guney I, Turkmen K, Yazici R, Arslan S, Altintepe L, Yeksan M, Vaduva C, Popa S, Mota M, Mota E, Wan Md Adnan WAH, Zaharan NL, Moreiras-Plaza M, Blanco-Garcia R, Beato-Coo L, Cossio-Aranibar C, Martin-Baez I, Santos MT, Fonseca I, Santos O, Aguiar P, Rocha MJ, Carvalho MJ, Cabrita A, Rodrigues A, Guo Z, Lai X, Theodoridis M, Panagoutsos S, Thodis E, Karanikas M, Mitrakas A, Kriki P, Kantartzi K, Passadakis P, Vargemezis V, Vakilzadeh N, Pruijm M, Burnier M, Halabi G, Azevedo P, Santos O, Carvalho M, Cabrita A, Rodrigues A, Laplante S, Rutherford P, Shutov E, Isachkina A, Gorelova E, Troya MI, Teixido J, Pedreira G, Del Rio M, Romero R, Bonet J, Zhang X, Ma J, Kim Y, Kim JK, Song YR, Kim SG, Kim HJ, Eloot S, Vanholder R, Van Biesen W, Heaf J, Pedersen C, Elgborn A, Arabaci T, Emrem G, Keles M, Kizildag A, Martino F, Amici G, Rodighiero MP, Crepaldi C, Ronco C, Tanaka H, Tsuneyoshi S, Yamasaki K, Daijo Y, Tatsumoto N, Al-Hilali N, Hussain N, Fathy V, Negm H, Alhilali M, Grzegorzewska A, Cieszynski K, Kaczmarek A, Sowinska A, Soleymanian T, Najafi I, Ganji MR, Ahmadi F, Saddadi F, Hakemi M, Amini M, Tong LNMN, Yongcheng HNMN, Qijun WNMN, Shaodong LNMN, Velioglu A, Albaz M, Arikan H, Tuglular S, Ozener C, Bakirdogen S, Eren N, Mehtap O, Bek SG, Cekmen MB, Yilmaz A, Cabana Carcasi MLL, Fernandez Ferreiro A, Fidalgo Diaz M, Becerra Mosquera V, Alonso Valente R, Buttigieg J, Borg Cauchi A, Rogers M, Buhagiar L, Farrugia Agius J, Vella MP, Farrugia E, Han JH, Kim HR, Ko KI, Kim CH, Koo HM, Doh FM, Lee MJ, Oh HJ, Han SH, Yoo TH, Kang SW, Choi KH, Sikorska D, Frankiewicz D, Klysz P, Schwermer K, Hoppe K, Nealis J, Kaczmarek J, Baum E, Wanic-Kossowska M, Pawlaczyk K, Oko A, Hiss M, Gerstein F, Haller H, Gueler F, Fukasawa M, Manabe T, Wan Q, He Y, Zhu D, Li J, Xu H, Yayar O, Eser B, Buyukbakkal M, Ercan Z, Erdogan B, Merhametsiz O, Yildirim T, Kali A, Haspulat A, Oztemel A, Akdag I, Ayli MD, Pilcevic D, Kovacevic Z, Maksic D, Paunic Z, Tadic-Pilcevic J, Mijuskovic M, Petrovic M, Obrencevic K, Rabrenovic V, Ignjatovic L, Terzic B, Jovanovic D, Chang CH, Chang YS, Busuioc M, Guerraoui A, Caillette-Beaudoin A, Bahte SK, Hiss M, Kielstein JT, Polinder-Bos H, Emmelot-Vonk M, Gaillard C. Peritoneal dialysis II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft145] [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: 11/15/2022] Open
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Gelev S, Toshev S, Trajceska L, Pavleska S, Selim G, Dzekova P, Shikole A, Gelev S, Toshev S, Trajceska L, Pavleska S, Selim G, Dzekova P, Shikole A, Ulu SM, Yilmaz F, Ahsen A, Akci A, Yuksel S, Mihaescu A, Olariu N, Avram C, Schiller O, Schiller A, Xiao DM, Niu JY, Gu Y, Drechsler C, van den Broek H, Vervloet M, Hoekstra T, Dekker F, Ketteler M, Brandenburg V, Turkvatan A, Kirkpantur A, Mandiroglu S, Afsar B, Seloglu B, Alkis M, Erkula S, GURBUZ H, Serin M, CALIK Y, Mandiroglu F, Balci M, Choi BS, Choi SR, Park HS, Hong YA, Chung BH, Kim YS, Yang CW, Kim YS, Park CW, Jung JY, Sung JY, Kim AJ, Kim HS, Lee C, Ro H, Chang JH, Lee HH, Chung W, Sezer S, Bal Z, Tutal E, Bal U, Erkmen Uyar M, Ozdemir Acar N, Karakas Y, Sahin G, Urfali F, Bal C, Akcar Degirmenci N, Sirmagul B, Janda K, Krzanowski M, Dumnicka P, Kusnierz-Cabala B, Sulowicz W, Balci M, Kirkpantur A, Mandiroglu S, Afsar B, Seloglu B, Alkis M, Serin M, CALIK Y, Erkula S, GURBUZ H, Mandiroglu F, Turkvatan A, Valtuille RA, Gonzalez MS, Casos ME, Yoshida T, Yamashita M, Hayashi M, Raikou VD, Tentolouris N, Makropoulos I, Kaisidis P, Boletis JN, Abdalla AA, Roche D, Forbes JF, Hannigan A, Hegarty A, Cronin CJ, Casserly LF, Stack AG, Guinsburg A, Raimann JG, Usvyat L, Kooman J, Marelli C, Etter M, Marcelli D, Levin NW, Kotanko P, Kim CS, Choi JS, Bae EH, Ma SK, Kim SW, Ryu JH, Lee S, Ryu DR, Kim SJ, Kang DH, Choi KB, Shoji T, Tsuchikura S, Shimomura N, Kakiya R, Tsujimoto Y, Tabata T, Emoto M, Nishizawa Y, Inaba M, Selim G, Stojceva-Taneva O, Tozija L, Georgievska-Ismail L, Gelev S, Dzekova-Vidimliski P, Trajceska L, Petronievic Z, Sikole A, Wu CJ, Pan CF, Chen HH, Lin CJ, Kim Y, Kim JK, Song YR, Kim SG, Kim HJ, Kuwahara M, Bannai K, Kikuchi K, Yamato H, Segawa H, Miyamoto KI, De Mauri A, Chiarinotti D, Ruva CE, David P, Capurro F, De Leo M, Han JH, Kim HR, Ko KI, Kim CH, Koo HM, Doh FM, Lee MJ, Oh HJ, Han SH, Yoo TH, Choi KH, Kang SW, Shibata K, Sohara H, Kuji T, Kawata S, Kogudhi N, Nishihara M, Satta H, Jung JY, Ro H, Lee C, Kim SM, Kim AJ, Kim HS, Chang JH, Lee HH, Chung W, Kramann R, Erpenbeck J, Becker M, Brandenburg V, Kruger T, Marx N, Floege J, Schlieper G, Power A, Fogarty D, Wheeler D, Kerschbaum J, Schwarz CP, Mayer G, Prajitno CW, Matsuzawa R, Matsunaga A, Ishii A, Abe Y, Yoneki K, Harada M, Takagi Y, Yoshida A, Takahira N, Sirch J, Pfeiffer S, Fischlein T, El-Nahid MS, Issac MS, Bal Z, Tutal E, Bal U, Erkmen Uyar M, Guliyev O, Sayin B, Sezer S, Bajari T, Hermann M, Gmeiner B, Regele H, Aumayr K, Gensberger ET, Scharrer S, Sengoge G, Novo A, Tania S, Anes E, Domingues A, Mendes E, Batista G, Viana J, Rroji M, Cafka M, Seferi S, Seiti J, Petrela E, Likaj E, Thereska N, Selim G, Stojceva-Taneva O, Tozija L, Georgievska-Ismail L, Gelev S, Dzekova-Vidimliski P, Trajceska L, Petronievic Z, Sikole A, Turkmen K, Ozcicek F, Erdur F, Turk S, Yeksan M, Tonbul H, Castellano S, Palomares I, Merello JI, Mandiroglu S, Torkvatan A, Balci M, Seloglu B, Alkis M, Serin M, Erkula S, Gurbuz H, Calik Y, Afsar B, Mandiroglu F, Kirkpantur A, Ulusal Okyay G, Okyay K, Polattas Solak E, Sahinaslan A, Pasaoglu O, Ayerden Ebinc F, Boztepe Derici U, Sindel S, Arinsoy T, Lee YK, Son SY, Choi MJ, Lee SM, Yoon JW, Koo JR, Noh JW, Vaziri ND, Matias P, Amaral T, Ferreira AC, Mendes M, Azevedo A, Jorge C, Aires I, Gil C, Ferreira A, Carretero Dios D, Merello Godino JI, Moran Risco JE, Castellano Gasch S, Schwermer K, Hoppe K, Klysz P, Radziszewska D, Sikorska D, Nealis J, Polcyn-Adamczak M, Zaremba-Drobnik D, Pawlaczyk K, Oko A, Mentese A, Yavuz A, Karahan C, Sumer A, Ozkan G, Ulusoy S, Yildiz G, Duman A, Aydin H, Yilmaz A, Hur E, Magden K, Cetin G, Candan F, Franczyk-Skora B, Gluba A, Kowalczyk M, Banach M, Rysz J, Novo A, Domingues A, Preto L, Sousa T, Mendes E, Batista G, Vaz J, Oue M, Kuragano T, Hamahata S, Fukao W, Toyoda K, Nakanishi T, Otsubo S, Tsuchiya K, Akiba T, Nitta K, Afsar B, Saglam M, Yuceturk C, Agca E, Tosic J, Djuric Z, Popovic J, Buzadzic I, Djuric P, Jankovic A, Dimkovic N, Simone S, Dell'Oglio MP, Ciccone M, Castellano G, Corciulo R, Balestra C, Giangrande M, Gigante M, Grandaliano G, Gesualdo L, Pertosa GP, Mohamed EA, Marouane B, Mohamed Reda EF, Aziz R, Hicham B, Youssef B, Abdennasser EK, Salaheddine T, Mohammed A, Hwang JC, Jiang MY, Lu YH, Wang CT, Grzegorzewska A, Cieszynski K, Niepolski L, Sowinska A, Abdallah E, Al-Helal B, Waked E, Abdel-Khalik A, Nabil M, El-Shanawany F, Tekce H, Kursat S, Bahadir Colak H, Aktas G, Ozcicek A, Turkmen K, Ozcicek F, Akbas E, Demirtas L, Ozbicer A, Cetinkay R, Capoglu I, Valocikova I, Valocik G, Vachalcova M, Kolesarova E, Nowak A, Friedrich B, Artunc F, Serra A, Breidthardt T, Twerenbold R, Peter M, Potocki M, Muller C. Cardiovascular complications in CKD 5D. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft147] [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: 11/13/2022] Open
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Conradsen I, Beniczky S, Hoppe K, Wolf P, Sorensen HBD. Automated Algorithm for Generalized Tonic–Clonic Epileptic Seizure Onset Detection Based on sEMG Zero-Crossing Rate. IEEE Trans Biomed Eng 2012; 59:579-85. [DOI: 10.1109/tbme.2011.2178094] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bolkenius PR, Reitter A, Hoppe K, Schlösser R, Bartling T, Louwen F. Casereport Dysplasia spondyloepiphysaria congenita. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-1002968] [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]
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Louwen F, Hoppe K, Kohl J, Reitter A, Bauer K. Geburtsmodus bei Frühgeborenen (<35.+0) – Risikofaktoren für IVH und BPD. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-1002852] [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]
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Kohl J, Hoppe K, Schäfer D, Reitter A, Louwen F. Fetale Überwachung bei Übertragung – Duplexsonographie der A. cerebri media (MCA). Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-1002944] [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]
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Heng L, Vincken JP, Hoppe K, van Koningsveld G, Decroos K, Gruppen H, van Boekel M, Voragen A. Stability of pea DDMP saponin and the mechanism of its decomposition. Food Chem 2006. [DOI: 10.1016/j.foodchem.2005.07.045] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Klee AP, Hoppe K, Müller K, Queißer B, Gonser M. Etablierung und Akzeptanz von KIWI, einer neuartigen patientenfreundlichen Vakuumextraktionsmethode in einem Perinatalzentrum. Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-923093] [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: 10/18/2022]
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Hoppe K, Klee A, Gonser G, Müntefering H. Chorangiom im Verlauf einer Schwangerschaft. Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-923287] [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: 10/18/2022]
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Friis P, Hoppe K, Leistiko O, Mogensen KB, Hübner J, Kutter JP. Monolithic integration of microfluidic channels and optical waveguides in silica on silicon. Appl Opt 2001; 40:6246-6251. [PMID: 18364929 DOI: 10.1364/ao.40.006246] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Sealing of the flow channel is an important aspect during integration of microfluidic channels and optical waveguides. The uneven topography of many waveguide-fabrication techniques will lead to leakage of the fluid channels. Planarization methods such as chemical mechanical polishing or the etch-back technique are possible, but troublesome. We present a simple but efficient alternative: By means of changing the waveguide layout, bonding pads are formed along the microfluidic channels. With the same height as the waveguide, they effectively prevent leakage and hermetically seal the channels during bonding. Negligible influence on light propagation is found when 10-mum-wide bonding pads are used. Fabricated microsystems with application in absorbance measurements and flow cytometry are presented.
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Hoppe K. [Statistical-methodologic supplement to the interindividual variability in taste sensitivity]. Nahrung 1998; 42:326-7. [PMID: 9829271 DOI: 10.1002/(sici)1521-3803(199810)42:05<326::aid-food326>3.3.co;2-p] [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: 11/09/2022]
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Hoppe K. [The psychophysics of sweet taste. 8. Interindividual variability of differential findings]. Nahrung 1996; 40:335-9. [PMID: 9053728 DOI: 10.1002/food.19960400609] [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] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Contribution to the psychophysics of sweet taste. Part 8. On the inter-individual variability of the difference sensitivity. The variability of sensitivity of volunteers is a considerable imponderability for the comparison of sensoric results. The paper deals with the quantitative determination of the different sensitivity of sweet taste of 132 persons, 38 men and 94 women at the age of 19 to 64 years, using a statistically defined method. The numbers of errors are estimated for each person by means of one test difference of two saccharose concentrations using 10 pairs of comparisons and 4 runs. The average number of error of 10 comparisons corresponds to the individual measure of sensitivity. The medium value of the total distribution is 1.54 and the standard deviation is 1.19 errors. The value is only less above the binomial calculated number. In random test women show in comparison to men a significant higher variance at the statistical identical mean. A variance analysis based on the cutting of the distribution edges in the range of 0.5 to 4.0 errors can detect high significantly the steady learning effect of the volunteers during the runs. The method is applicable to determine classified subjective characteristics. The calculations of necessary group numbers for such experiments on the base of binomial distribution are discussed.
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Affiliation(s)
- K Hoppe
- Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke, Deutschland
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Schmidt O, Angermann H, Frommhold-Treu I, Hoppe K. Experimental and theoretical investigations of submerged fermentation and synthesis of pectinolytic enzymes by Aspergillus niger. Appl Microbiol Biotechnol 1995. [DOI: 10.1007/bf00218444] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hoppe K. [The psychophysics of sweet taste. 7. New determination of sweet taste parameters of acesulfame, aspartame, cyclamate, saccharin, glucose and sorbitol]. Nahrung 1995; 39:275-81. [PMID: 7477243 DOI: 10.1002/food.19950390405] [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] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
By means of a new method (double staircase) concentration pairs of equal intensity for the sweet compounds acesulfame-K, aspartame, cyclamate-Na, saccharine-Na, dextrose and glucitol were determined with sucrose on 6 or 7 equidistant scaled levels, respectively, with 4 repetitions. The parameters maximal intensity Rm, the concentration coefficient b and the mean Rm/b, respectively, are calculated for each substance from the known parameters for sucrose using the exponential function R = Rm(1-e-bS/Rm), which describes the sweetness intensity R in dependence of the concentration S. For exact determination of the maximal intensity the upper concentration level was fixed at very high degree. Additionally, the relative sweetness of each concentration level of each substance is calculated. In all cases the exponential function is valid without limitation. The statistical parameters are homogenous and are laying within the applied staircase method. Systematical deviations could not be found.
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Affiliation(s)
- K Hoppe
- Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke
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Hoppe K. [The psychophysics of sweet taste. 6. Context effects by use of multiple stimuli sequences]. Nahrung 1995; 39:173-9. [PMID: 7783783 DOI: 10.1002/food.19950390211] [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] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
For the determination of differentiation probabilities in a multiple experimental design the range of stimuli is a significant source of disturbance. In order to determine their efficiency, sequences with 5 equidistant gradated concentrations of sucrose were used, which were compared with a basic concentration. The probability for each gradation was carried out with help of 2-AFC-technique (60 pairs each). 5 gradations at 3 basic concentrations with fixed, average balance were examined in a factorized experimental design. The frequency of the correct judgments is linearily dependent on the sequence of stimuli. In the experimental space the slope of this relationships decreases with increasing gradation hyperbolically (range-effects). The level of the basic stimuli is in this view without any greater importance. When determining the difference thresholds these context effects are to be considered.
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Affiliation(s)
- K Hoppe
- Deutsches Institut für Ernährungsforschung, Potsdam-Rehbrücke, Bundesrepublik Deutschland
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Hoppe K. [The psychophysics of sweet taste. 5. The use of a sequential staircase method for the determination of equally intense concentration pairs]. Nahrung 1994; 38:283-294. [PMID: 8028650 DOI: 10.1002/food.19940380308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The suitability of a sequential staircase-method for the determination of equal stimuli of the gustatory sense is experimentally investigated. The aim is the decrease of experimental expenditure when ruling sources of bias. In order to realize them sucrose solutions are used both for the constant stimulus and also for the sequence of stimuli. Possible factors are the gradation of the sequence of stimuli and its displacement towards the constant stimulus. These are factorized in a two-staged trial arrangement and are interpreted in a form of an analysis of variance. The gradation of sequence (grain) is the key factor. It defines both the occasional bias and also the efficiency of systematical sources of bias. Thus the subject-depending judgement errors, which occur in larger gradation, are avoidable with their adjustment on the half of the difference threshold. The errors, which are due to the direction, are counterbalanced through an up and down trial execution with a following meaning average. A remaining influence of the displacement of sequence is normally neglective. The standard deviation for the single determination lies--independently of the concentration level--dimensionally slightly above the half of the setting grain. The method of constant stimuli requires at least the twofold experimental expenditure for a similar result.
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Affiliation(s)
- K Hoppe
- Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke
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Affiliation(s)
- K Hoppe
- Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke, Bundesrepublik Deutschland
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Albrecht V, Pénzes L, Petzke KJ, Hoppe K. Relationship between a long-term treatment of 2-mercaptoethanol and protein metabolism in the ageing rat. J Comp Physiol B 1992; 162:547-51. [PMID: 1430422 DOI: 10.1007/bf00264816] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Female RLEF1/Lati rats were chronically treated with 2-mercaptoethanol in a dose of 13 micrograms.100 g bw-1.day-1 dissolved in drinking water. During a 48-h experiment 15N-labelled glycine was given orally in a dose of 5 mg 15N.kg bw-1 and urine samples were collected and analysed by an emission spectrometric isotope method. Protein synthesis and nitrogen excretion rate constants were calculated according to the three-pool model, and 3-methylhistidine excretion rates were also determined. 2-Mercaptoethanol appears to influence protein metabolism; however, the slower rates of protein synthesis proved to be apparent in almost all groups of treated rats. Protein synthesis and nitrogen excretion rate constants have exceptionally high values in 2-year-old rats, possibly explained by the occurrence of hypercompensation mechanisms in old age. These were reflected by the excretion rates of 3-methylhistidine which were reduced as a result of sulphhydryl group interactions in age-dependent cellular metabolic changes.
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Affiliation(s)
- V Albrecht
- German Institute of Nutritional Research, Bergholz-Rehbrücke
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Zahn L, Freund R, Hoppe K, Pisarchuk KL, Augustin W. Prediction of total body lipid from total body water in rats. Part 1. Relations between directly measured major body components. Nahrung 1991; 35:581-90. [PMID: 1787846 DOI: 10.1002/food.19910350605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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
Aimed to the construction of a prediction equation for estimations of lipid content from animal water content body composition was determined by whole body analysis of male rats (1) given access, ad libitum, to a commercial standard diet (n = 144; ranging from 60 to 600 g in weight, and from the 4th to the 34th week of age), and (2) showing striking variations with regard to nutritional state, dietary history, enlarged fat deposition, genetic origin, intestinal microbial status, and advanced age (n = 75). It was shown that a unique coefficient of water content in lipid-free body mass does not exist. The results of statistical analysis for the grouped values of percentage body dry matter (x) and percentage body lipid (y) indicate that the latter can be estimated accurately from body water content directly determined by the use of the quadratic regression equation y = -0.2864 x +0.01615 x2 with a standard deviation of the procedure Sy = +/- 1.40. This prediction equation is valid for a wide developmental span even under highly different experimental states. Differences between the calculated body lipid contents vs. analytically determined values are smaller than by using a linear regression equation or coefficient(s) of hydration of lipid-free body mass.
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Affiliation(s)
- L Zahn
- Central Institute of Nutrition in Potsdam-Rehbrücke, Federal Republic of Germany
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