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Held M, Grün M, Holl R, Hübner G, Kaiser R, Karl S, Kolb M, Schäfers HJ, Wilkens H, Jany B. Cardiopulmonary exercise testing to detect chronic thromboembolic pulmonary hypertension in patients with normal echocardiography. Pneumologie 2014. [DOI: 10.1055/s-0034-1375931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Olewczynska N, Kaiser R, Böhmer P, Lensch C, Schäfers HJ, Rustler M, Joost T, Schmoll C, Kaestner F, Langer F, Wilkens H, Bals R, Lepper PM. Veno-veno-arterielle ECMO als Überbrückung bis zur Lungentransplantation bei einer wachen, nicht intubierten Patientin mit schwerer pulmonalarterieller Hypertonie. Pneumologie 2014. [DOI: 10.1055/s-0034-1367807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kaestner F, Olewczynska N, Kaiser R, Böhmer P, Fähndrich S, Coulee L, Kamp A, Stehle I, Rentz K, Schmoll C, Henschke S, Schäfers HJ, Langer F, Wilkens H, Bals R, Lepper PM. Extrakorporale Membranoxygenierung bei Patienten mit Sepsis und septischem Schock als Überbrückung zur Lungentransplantation. Pneumologie 2014. [DOI: 10.1055/s-0034-1367769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kaiser R, Seiler S, Held M, Bals R, Wilkens H. Prognostic impact of renal function in precapillary pulmonary hypertension. J Intern Med 2014; 275:116-26. [PMID: 24011362 DOI: 10.1111/joim.12131] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Impairment of renal function is associated with adverse outcome in various diseases. Patients with pulmonary hypertension (PH) show diminished cardiac function and organ perfusion. The aim of this study was to investigate the associations between renal function and both haemodynamic parameters and long-term survival in patients with PH. METHODS Blood was collected from 64 patients with PH (Dana Point class 1, 3 and 4) during right heart catheterization, and plasma was prepared. Creatinine, blood urea nitrogen (BUN), cystatin C, neutrophil-gelatinase-associated lipocalin (NGAL), fibroblast growth factor 23 (FGF-23) and α-Klotho levels were determined, and glomerular filtration rate (GFR) was estimated (eGFR). Parameters were evaluated using c-statistics and dichotomized for survival analysis based on receiver operating characteristic curves. RESULTS The median follow-up time was 9.92 years with all-cause mortality as the primary end-point. Elevated BUN, cystatin C and creatinine levels were associated with decreased survival, with hazard ratios (HRs) of 3.237, 4.514 and 2.006, respectively, and equivalent performance according to c-statistics. Estimating GFR by CKD-EPI, MDRD and Cockcroft-Gault formulas resulted in HRs of 2.942, 2.694 and 3.306, respectively. Amongst these formulas, eGFR (Cockcroft-Gault) had the highest c-statistics of 0.674. There was a correlation between BUN and both cardiac index (τ = -0.39) and pulmonary vascular resistance index (τ = 0.249), whereas eGFR (CKD-EPI) was correlated with cardiac index (τ = 0.225). No correlations between either BUN or eGFR and right atrial pressure (RAP) were observed. NGAL, FGF-23 and α-Klotho had no prognostic impact or association with haemodynamic parameters. CONCLUSION Comparison of markers of renal function for prognosis in PH demonstrated superiority of creatinine, cystatin C and BUN over NGAL, FGF-23 and α-Klotho. Minor decreases in eGFR influence long-term prognosis, and measurement of cystatin C levels might be useful to detect renal impairment in patients with a normal serum concentration of creatinine. Renal function in patients with PH is linked to cardiac index rather than RAP.
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Kaiser R, Clarkson A, Hamilton DJ, Hoek M, Ireland DG, Johnston JR, Keri T, Lumsden S, Mahon DF, McKinnon B, Murray M, Nutbeam-Tuffs S, Shearer C, Staines C, Yang G, Zimmerman C. A Prototype Scintillating-Fibre Tracker for the Cosmic-ray Muon Tomography of Legacy Nuclear Waste Containers. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146610005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Reck M, Mellemgaard A, Douillard JY, Orlov S, Krzakowski M, von Pawel J, Gottfried M, Bondarenko I, Liao M, Barrueco J, Gaschler-Markefski B, Kaiser R, Novello S. 30 Nintedanib (BIBF 1120) + docetaxel as second-line therapy in patients with stage IIIB/IV or recurrent NSCLC: results of the phase III, randomised, double-blind LUME-Lung 1 trial. Lung Cancer 2014. [DOI: 10.1016/s0169-5002(14)70031-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kaiser R, Williamson K, O’Brien C, Ramirez-Garcia S, Browne D. The influence of cooling conditions on grain size, secondary phase precipitates and mechanical properties of biomedical alloy specimens produced by investment casting. J Mech Behav Biomed Mater 2013; 24:53-63. [DOI: 10.1016/j.jmbbm.2013.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 04/03/2013] [Accepted: 04/07/2013] [Indexed: 10/26/2022]
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Westreicher-Kristen E, Kaiser R, Steingass H, Rodehutscord M. Effect of feeding dried distillers' grains with solubles on milk yield and milk composition of cows in mid-lactation and digestibility in sheep. J Anim Physiol Anim Nutr (Berl) 2013; 98:347-56. [DOI: 10.1111/jpn.12096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Accepted: 05/28/2013] [Indexed: 11/27/2022]
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Lopatukhin AÉ, Kireev DE, Poliakov AN, Bukin EK, Kaiser R, Luebke N, Kuevda DA, Shipulin GA. [The first experience of application of standardized genotype technique of identification of HIV-tropism]. Klin Lab Diagn 2013:46-48. [PMID: 24340948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The antagonists of co-receptor CCR5 are an ultimately new class of preparations to treat HIV-infection. The mechanism of action of the preparations of this class is in the selective binding with co-receptor CCR5. This process results in the prevention of penetration of HIV into cell. Before prescribing the CCR5 antagonists the detection of viral tropism has to be done. Recently, in Russia the genotype technique of tropism detection was registered which can be used in clinical practice. The present article describes first experience of application of the given technique to clinical samples. The high correlation was established while comparing with the results of reference laboratory.
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Weingard B, Kaiser R, Franzen K, Bals R, Wilkens H. Evaluation von Asymmetrien und Asynchronien der Thoraxwand-Ausdehnung bei Patienten mit unilateraler Zwerchfellparese und nach Pneumonektomie mittels optoelektronischer Plethysmografie (OEP). Pneumologie 2013. [DOI: 10.1055/s-0033-1334700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lensch C, Kaiser R, Bals R, Wilkens H. Periphere arterielle Endothelfunktion bei Patienten mit IPAH oder CTEPH. Pneumologie 2013. [DOI: 10.1055/s-0033-1334602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kaiser R, Waldauf P, Haninec P. [Scapular fracture related to polytrauma severity in patients with serious brachial plexus palsy]. ACTA CHIRURGIAE ORTHOPAEDICAE ET TRAUMATOLOGIAE CECHOSLOVACA 2013; 80:284-286. [PMID: 24119477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSE OF THE STUDY Brachial plexus palsy is often accompanied by other injuries. Scapular fracture is thought to be a marker of polytrauma severity. The aim of this study was to evaluate associated injuries in patients with serious brachial plexus involvement and to determine whether there is a relationship between scapular fracture and severity of polytrauma in such patients. MATERIAL AND METHODS We retrospectively evaluated 84 surgical patients who underwent brachial plexus reconstruction at our department between 2008 and 2011. In all of them, data on scapular fracture and major associated injuries were recorded. RESULTS Of the 84 patients, 22 (26.2%) had a scapular fracture. Of 61 patients with upper plexus palsy only 10 (16.4%) suffered a scapular fracture while of 23 patients with more severe plexus lesions 12 (52.2%, p<0.001) had fractured scapula. The ISS score in the patients with fractured scapula was significantly higher (51.8, SD=11, range=18-75, p<0.001). The patients with scapular fractures also had a significantly higher number of rib, clavicle, upper and lower limb fractures, and injuries to the thoracic organs and the head. CONCLUSIONS Both scapular fracture and serious brachial plexus injury are usually associated with other severe injuries. They occur due to high-energy trauma. Generally, patients who sustain scapular fractures and upper limb impairment in motorcycle and car crashes are at high risk of other associated injuries and more severe polytrauma.
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Doebele RC, Conkling P, Traynor AM, Otterson GA, Zhao Y, Wind S, Stopfer P, Kaiser R, Camidge DR. A phase I, open-label dose-escalation study of continuous treatment with BIBF 1120 in combination with paclitaxel and carboplatin as first-line treatment in patients with advanced non-small-cell lung cancer. Ann Oncol 2012; 23:2094-2102. [PMID: 22345119 PMCID: PMC4141207 DOI: 10.1093/annonc/mdr596] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 11/18/2011] [Accepted: 11/29/2011] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND BIBF 1120 is an oral potent inhibitor of vascular endothelial growth factor receptor, fibroblast growth factor receptor and platelet-derived growth factor receptor, the three key receptor families involved in angiogenesis. This phase I, open-label dose-escalation study investigated BIBF 1120 combined with paclitaxel (Taxol) and carboplatin in first-line patients with advanced (IIIB/IV) non-small-cell lung cancer. PATIENTS AND METHODS Patients received BIBF 1120 (starting dose 50 mg b.i.d.) on days 2-21 and paclitaxel (200 mg/m2) and carboplatin [area under curve (AUC)=6 mg/ml/min] on day 1 of each 21-day cycle. Primary end points were safety and BIBF 1120 maximum tolerated dose (MTD) in this combination. Pharmacokinetics (PK) profiles were evaluated. RESULTS Twenty-six patients were treated (BIBF 1120 50-250 mg b.i.d.). BIBF 1120 MTD was 200 mg b.i.d. in combination with paclitaxel and carboplatin. Six dose-limiting toxicity events occurred during treatment cycle 1 (liver enzyme elevations, thrombocytopenia, abdominal pain, and rash). Best responses included 7 confirmed partial responses (26.9%); 10 patients had stable disease. BIBF 1120 200 mg b.i.d. had no clinically relevant influence on the PK of paclitaxel 200 mg/m2 and carboplatin AUC 6 mg/ml/min and vice versa. CONCLUSIONS BIBF 1120 MTD was 200 mg b.i.d when given with paclitaxel and carboplatin; this combination demonstrated an acceptable safety profile. No relevant changes in PK parameters of the backbone chemotherapeutic agents or BIBF 1120 were observed.
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Grotemeyer K, Kaiser R. 84-jährige Patientin mit Verdacht auf kardiale Dekompensation. Dtsch Med Wochenschr 2012. [DOI: 10.1055/s-0032-1301863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Grotemeyer K, Kaiser R. 84-jährige Patientin mit Verdacht auf kardiale Dekompensation. Dtsch Med Wochenschr 2012; 137:1251-2. [DOI: 10.1055/s-0031-1299043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Al Nsour M, Kaiser R. Networking for applied field epidemiology - Eastern Mediterranean Public Health Network (EMPHNET) Conference 2011. EASTERN MEDITERRANEAN HEALTH JOURNAL 2012; 17:990-3. [PMID: 22355954 DOI: 10.26719/2011.17.12.990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
On the occasion of the second Eastern Mediterranean Public Health Network (EMPHNET) conference that was held from 6-9 December 2011 in Sharm Al Sheikh, Egypt, this article introduces EMPHNET and its role to link Field Epidemiology Training Programs (FETP) in the region. The paper briefly describes the changing epidemiology situation in the region to illustrate the urgent need to strengthen public health systems and to build up the epidemiologist workforce.
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Lensch C, Kaiser R, Bals R, Wilkens H. Kardiale Bioimpedanz als nicht-invasives Monitoring bei Patienten mit pulmonaler Hypertension. Pneumologie 2012. [DOI: 10.1055/s-0032-1302869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Al Nsour M, Kaiser R, Abd Elkreem E, Walke H, Kandeel A, Bloland P. Highlights and conclusions from the Eastern Mediterranean Public Health Network (EMPHNET) conference 2011. EASTERN MEDITERRANEAN HEALTH JOURNAL = LA REVUE DE SANTE DE LA MEDITERRANEE ORIENTALE = AL-MAJALLAH AL-SIHHIYAH LI-SHARQ AL-MUTAWASSIT 2012; 18:189-91. [PMID: 22571098 PMCID: PMC5485914 DOI: 10.26719/2012.18.2.189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
As a follow up of a short communication that the Eastern Mediterranean Health journal published in December 2011, this article reports on highlights and conclusions from scientific abstracts, methodology workshops and plenary sessions that were presented as part of the Eastern Mediterranean Public Health Network (EMPHNET) conference held from 6 to 9 December 2011 in Sharm Al Sheikh, Egypt.
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Frost A, Mross K, Steinbild S, Hedbom S, Unger C, Kaiser R, Trommeshauser D, Munzert G. Phase i study of the Plk1 inhibitor BI 2536 administered intravenously on three consecutive days in advanced solid tumours. Curr Oncol 2012; 19:e28-35. [PMID: 22328845 PMCID: PMC3267594 DOI: 10.3747/co.19.866] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND This open-label phase i study with an accelerated titration design was performed to determine the maximum tolerated dose of BI 2536, a potent, highly selective small-molecule polo-like kinase 1 (Plk1) inhibitor. METHODS Patients with advanced solid tumours received a single 60-minute intravenous infusion of BI 2536 (50-70 mg) on days 1-3 of each 21-day treatment course. Recipients without disease progression or untenable toxicity could receive additional treatment courses. The maximum tolerated dose was determined based on dose-limiting toxicities. Other assessments included safety, pharmacokinetic profile, and antitumour activity according to the Response Evaluation Criteria in Solid Tumors. RESULTS The study enrolled 21 patients. The maximum tolerated dose for BI 2536 was determined to be 60 mg for the study schedule. Dose-limiting toxicities included hematologic events, hypertension, elevated liver enzymes, and fatigue. The most frequently reported drug-related adverse events were mild-to-moderate fatigue, leukopenia, constipation, nausea, mucosal inflammation, anorexia, and alopecia. The pharmacokinetics of BI 2536 were linear within the dose range tested. Plasma concentration profiles exhibited multi-compartmental pharmacokinetic behaviour, with a terminal elimination half-life of 20-30 hours. CONCLUSIONS In the present study, BI 2536 showed an acceptable safety profile warranting further investigation of Plk1 inhibitors in this patient population.
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Mendonça JT, Kaiser R. Photon bubbles in ultracold matter. PHYSICAL REVIEW LETTERS 2012; 108:033001. [PMID: 22400734 DOI: 10.1103/physrevlett.108.033001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Indexed: 05/02/2023]
Abstract
We show that static and oscillating photon bubbles can be excited by diffused light in the laser cooled matter confined in a magneto-optical trap. The bubble instability is due to the coupling between the radiation field and the mean field oscillations of the ultracold gas, and it can provide a source for low frequency turbulence. We consider a diffusion-dominated regime, which can be described by a radiation transport equation, coupled with the mean field equations for the cold atom gas. A perturbative analysis shows the occurrence of two different regimes with either oscillating or purely growing bubbles. This work could also be useful to understand similar processes in astrophysics.
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Kaiser R, Browne DJ, Williamson K. Investigation of the effects of cooling rate on the microstructure of investment cast biomedical grade Co alloys. ACTA ACUST UNITED AC 2012. [DOI: 10.1088/1757-899x/27/1/012071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kaiser R, Haninec P. [Degeneration and regeneration of the peripheral nerve]. CESKOSLOVENSKA FYSIOLOGIE 2012; 61:9-14. [PMID: 22737943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The peripheral nerve's degeneration and regeneration after its injury was described by Waller in 1850. The distal stump and small part of the proximal part of the transected fibre disintegrate. Proliferating Schwann cells create the band of Büngner for the guiding of the regrowing axon. Even if the suture of the nerve is quickly and well performed, the reinervation is never absolute. Regrowing axons can grow into wrong endoneurial tubes or outside the area of the suture and long-lasting denervation leads to progressive atrophy of the target organs. In the future, the neurotrophic factors might improve the outcome of the reinervation.
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Kaiser R, Houšťava L, Brzezny R, Haninec P. [The results of ulnar nerve decompression in Guyon's canal syndrome]. ACTA CHIRURGIAE ORTHOPAEDICAE ET TRAUMATOLOGIAE CECHOSLOVACA 2012; 79:243-248. [PMID: 22840956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
PURPOSE OF THE STUDY The aim of the study was to evaluate a group of patients treated for Guyon's canal syndrome with analysis of the cause for and outcome of surgery. MATERIAL AND METHODS The group comprised 13 patients operated on for compressive neuropathies of the ulnar nerve in the canal of Guyon in the period from 2007 to 2010. The clinical parameters evaluated were the adduction strength of the fifth digit, degree of interosseous primus muscle hypotrophy and degree of hypoesthesia in the area innervated by the ulnar nerve. EMG parameters included motor and sensory nerve conduction through Guyon's canal. Patients' subjective evaluations of the treatment outcomes were also recorded. The results were not compared with a control group. RESULTS Post-operative improvements in all clinical and EMG parameters were significant (p=0.02-0.003). All but one patient (90%) reported an improved subjective condition after surgery; on the other hand, pre-operative severe impairment of motor nerve conduction highly affected the post-operative motor function. Guyon's canal syndrome accounted for 0.8% of all compressive neuropathies of the upper extremity in our patients. DISCUSSION Ulnar nerve compression at the wrist is a relatively rare condition amongst the compressive neuropathies of the upper extremity, and literature data concerning this disease are very few. Although many causes of ulnar nerve compression at the wrist have been reported, only one of our patients had ganglion. We conclude that the majority of cases can be diagnosed as a "neuritis" due to chronic microtrauma produced by pressure of a hypertrophic palmar ligament. CONCLUSIONS Syndrome of Guyon's canal can easily be treated by surgery. As in other compression syndromes, the sooner a surgical decompression is performed, the better outcomes are achieved.
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