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Analysing the effect of stand density and site conditions on structure and growth of oak species using Nelder trials along an environmental gradient:experimental design,evaluation methods,and results

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Forest Ecosystems 2015年第3期2卷 243-261页

作者： Enno Uhl Peter Biber Matthias Ulbricht Michael Heym Tamás Horváth ferenc lakatos Janós Gál Leonhard Steinacker Giustino Tonon Maurizio Ventura Hans Pretzsch School of Life Sciences Weihenstephan Technische Universitaet Muenchen University of West Hungary Faculty of Forestry Faculty of Science and Technology Freie Universitat Bozen

Background: Most current approaches in forest science and practice require information about structure and growth of individual trees rather than- or in addition to- sum and mean values of growth and yield at forest stand level as provided by classic experimental designs. By inventing the wheel design, Nelder provided the possibility to turn to the individual tree as basic information unit. Such trials provide valuable insights into the dependency of growth on stand density at particular ***: Here, we present an extension of the original design and evaluation by Nelder.(i) We established Nelder wheels along an environmental gradient through Europe in atlantic climate in Belgium and Germany, Mediterranean climate in Italy, continental climate in Hungary as well as on high land climate in Mexico. Such disjunct Nelder wheels along an environmental gradient can be regarded and analysed as a two-factor design with the factors of site condition and stand density.(ii) We present an advanced statistical approach to evaluate density dependent growth dynamics of trees planted in form of the Nelder design, which considers spatio-temporal autocorrelation.(iii)We prove the usefulness of the methods in improving ecological theory concerning density related productivity,trade-offs between facilitation and competition, and allometric relations between size ***: First evaluations based on remeasured Nelder wheels in oak(Quercus robur L.) show a size growth differentiation during the first observation period. In particular, height growth is accelerated under higher competition indicating facilitation effects. We detect furthermore a high variability in allometric ***: The proposed design, methods, and results are discussed regarding their impact on forest practice,model building, and ecological theory. We conclude that the extended Nelder approach is highly efficient in providing currently lacking individual tree level information.

关键词： Facilitation Long-term trial Nelder Single tree analyses Space use efficiency Stress-gradient-hypothesis Tree allometry Quercus

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Perianal disease,small bowel disease,smoking,prior steroid or early azathioprine/biological therapy are predictors of disease behavior change in patients with Crohn's disease

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World Journal of Gastroenterology 2009年第28期15卷 3504-3510页

作者： Peter Laszlo lakatos Zsofia Czegledi Tamas Szamosi Janos Banai Gyula David ferenc Zsigmond Tunde Pandur Zsuzsanna Erdelyi Orsolya Gemela Janos Papp Laszlo lakatos 1st Department of Medicine Semmelweis University H-1083 Budapest Hungary Department of Gastroenterology State Health Center H-1062 Budapest Hungary 1st Department of Medicine Csolnoky F. County Hospital HH8201-Veszprem Hungary

AIM:To assess the combined effect of disease phenotype, smoking and medical therapy [steroid, azathioprine(AZA), AZA/biological therapy] on the probability of disease behavior change in a Caucasian cohort of patients with Crohn's disease(CD).METHODS:Three hundred and forty well-characterized, unrelated, consecutive CD patients were analyzed(M/F:155/185, duration:9.4 ± 7.5 years) with a complete clinical *** records including disease phenotype according to the Montreal classification, extraintestinal manifestations, use of medications and surgical events were analyzed *** were interviewed on their smoking habits at the time of diagnosis and during the regular follow-up ***:A change in disease behavior was observed in 30.8% of patients with an initially non-stricturing, non-penetrating disease behavior after a mean diseaseduration of 9.0 ± 7.2 *** a logistic regression analysis corrected for disease duration, perianal disease, smoking, steroid use, early AZA or AZA/ biological therapy use were independent predictors of disease behavior *** a subsequent Kaplan-Meier survival analysis and a proportional Cox regression analysis, disease location(P = 0.001), presence of perianal disease(P < 0.001), prior steroid use(P = 0.006), early AZA(P = 0.005) or AZA/biological therapy(P = 0.002), or smoking(P = 0.032) were independent predictors of disease behavior ***:Our data suggest that perianal disease, small bowel disease, smoking, prior steroid use, early AZA or AZA/biological therapy are all predictors of disease behavior change in CD patients.

关键词： Crohn's disease Smoking Azathioprine Infliximab Monoclonal antibodies Colectomy Risk Reoperation

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Is rectal indomethacin effective in preventing of post-endoscopic retrograde cholangiopancreatography pancreatitis?

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World Journal of Gastroenterology 2014年第29期20卷 10151-10157页

作者： Zoltán Dbrnte Zoltán Szepes ferenc Izbéki Judit Gervain László lakatos Gyula Pécsi Miklós Ihász Lilla Lakner Erzsébet Toldy László Czakó Department of Gastroenterology and Internal Medicine Markusovszky Teaching Hospital 1st Department of Medicine University of Szeged 1st Department of Internal Medicine Szent Gyrgy Regional Hospital Department of Internal Medicine Csolnoky Ferenc Regional Hospital Department of Gastroenterology Karolina Hospital Central Laboratory Markusovszky Teaching Hospital Institute of Diagnostics Faculty of Health SciencesUniversity of Pécs

AIM: To investigate the effectiveness of rectally administered indomethacin in the prophylaxis of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis and hyperamylasaemia in a multicentre study.

关键词： Endoscopic retrograde cholangiopancreatography Post-endoscopic retrograde cholangiopancreatography pancreatitis Hyperamylasaemia Nonsteroidal anti-inflammatory drugs Indomethacin

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Toll-like receptor 4 and NOD2/CARD15 mutations in Hungarian patients with Crohn's disease: Phenotype-genotype correlations

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World Journal of Gastroenterology 2005年第10期11卷 1489-1495页

作者： Peter Laszlo lakatos Laszlo lakatos ferenc Szalay Claudia Willheim-Polli Christoph (O|¨)sterreicher Zsolt Tulassay Tamas Molnar Walter Reinisch Janos Papp Gyula Mozsik Hungarian IBD Study Group Peter ferenci 1st Department of Medicine Laszlo lakatos Department of Internal Medicine 4 2nd Department of Medicine Semmelweis University 2nd Department of MedicineSemmelweis UniversityBudapest:Laszlo PronaiAnnamaria NemethPal Miheller Erzsebet Hospital 1st Department of MedicineBudapest: Agota KovacsLaszlo Bene Szent Janos Hospital 1st Department of Medicine:Gyorgy Szekely University of Pecs 1st Department of MedicinePecs:Beata Gasztonyi University of Szeged 1st Department of MedicineSzeged:Ferenc NagyJanos Lonovics Semmelweis Hospital 1st Department of MedicineMiskolc:Laszlo Ujszaszy University of Debrecen 2nd Department of MedicineDebrecen:Istvan AltorjaiKaroly Palatka Kenezi Gy. County Hospital 2nd Department of MedicineDebrecen: Gyula G. Kiss County Hospital 2nd Department of MedicineZalaegerszeg ferenc Tarnok Markusovszky Hospital2nd Department of MedicineSzombathely:Zoltan Dobronte Csolnoky F. County Hospital 1st Department of MedicineVeszprem:Zsuzsanna ErdelyiTunde PandurGabor Mester

AIM: To determine common NOD2/CARD15 mutations and TLR4 D299G polymorphism in Hungarian patients with CD. METHODS: A total of 527 unrelated patients with CD (male/female: 265/262, age: 37.1 (SD 7.6) years) and 200 healthy subjects were included. DNA was screened for possible NOD2/CARD15 mutations by denaturing high-performance liquid chromatography (confirmed by direct sequencing). TLR4 D299G was tested by PCR-RFLP. RESULTS: NOD2/CARD15 mutations were found in 185 patients (35.1%) and in 33 controls (16.5%,P<0.0001). SNP8/R702W (10.8% vs 6%, P= 0.02), SNP13/3020insC (19.4% vs 5%, P<0.0001) and exon4 R703C (2.1% vs 0%, P= 0.02) mutations were more frequent in CD, while the frequency of SNP12/G908R was not increased. The frequency of TLR4 D299G was not different (CD: 9.9% vs controls: 12.0%). Variant NOD2/CARD15 allele was associated with an increased risk for CD (ORhet=1.71, 95%CI=1.12-2.6, P= 0.0001, ORtwo-risk alleles = 25.2, 95%CI =4.37- ,P<0.0001), early disease onset (carrier: 26.4 years vs non-carrier: 29.8 years, P=0.0006), ileal disease (81.9% (?) 69.5%, OR = 1.99, 95%CI = 1.29-3.08, P= 0.02, presence of NOD2/CARD15 and TLR4: 86.7% vs 64.8%), stricturing behavior (OR = 1.69,95%CI = 1.13-2.55, P= 0.026) and increased need for resection (OR=1.71, 95%CI: 1.13-2.62, P= 0.01), but not with duration, extra-intestinal manifestations, familial disease or smoking. TLR4 exhibited a modifier effect: age of onset in wt/TLR4 D299G carriers: 27.4 years vs NOD2mut/TLR D299G: 23 years (P = 0.06), in NOD2mut/wt: 26.7 years. CONCLUSION: These results confirm that variant NOD2/ CARD15 (R702W, R703C and 3020insC) alleles are associated with earlier disease onset, ileal disease, stricturing disease behavior in Hungarian CD patients. In contrast, although the frequency of TLR4 D299G polymorphism was not different from controls, NOD2/TLR4 mutation carriers tended to present at earlier age.

关键词： Crohn's disease NOD2 CARD15 TLR4 Extraintestinal manifestation Phenotype

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Frequency and prognostic role of mucosal healing in patients with Crohn's disease and ulcerative colitis after one-year of biological therapy

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World Journal of Gastroenterology 2014年第11期20卷 2995-3001页

作者： Klaudia Farkas Péter László lakatos Mónika Szcs va Pallagi-Kunstár Anita Bálint ferenc Nagy Zoltán Szepes Noémi Vass Lajos S Kiss Tibor Wittmann Tamás Molnár First Department of Medicine University of SzegedH6720 SzegedHungary First Department of Medicine Semmelweis UniversityH1088 BudapestHungary Department of Medical Physics and Informatics University of SzegedH6720 SzegedHungary Faculty of Medicine Pediatrics DepartmentUniversity of SzegedH6720 SzegedHungary

AIM: To assess the endoscopic activity before and after a one-year period of biological therapy and to evaluate the frequency of relapses and need for retreatment after stopping the biologicals in patients with Crohn... 详细信息

关键词： Crohn’ s disease, Ulcerative colitis, Biological therapy, Endoscopy, Mucosal healing

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Gut barrier failure biomarkers are associated with poor disease outcome in patients with primary sclerosing cholangitis

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World Journal of Gastroenterology 2017年第29期23卷 5412-5421页

作者： Tamas Tornai Eszter Palyu Zsuzsanna Vitalis Istvan Tornai David Tornai Peter Antal-Szalmas Gary L Norman Zakera Shums Gabor Veres Antal Dezsofi Gabriella Par Alajos Par Peter Orosz ferenc Szalay Peter Laszlo lakatos Maria Papp Institute of Internal Medicine Department of Gastroenterology University of Debrecen Faculty of Medicine Department of Laboratory Medicine University of Debrecen Faculty of Medicine Debrecen Inova Diagnostics Inc.San Diego 1^st Department of Pediatrics Semmelweis University 1^st Department of Medicine University of Pecs Gastroenterology Department of Medicine Borsod-Abauj Zemplen County Hospital 1^st Department of Medicine Semmelweis University

To assess the prevalence of a panel of serologic markers that reflect gut barrier dysfunction in a mixed cohort of pediatric and adult primary sclerosing cholangitis (PSC) patients. METHODSSera of 67 PSC patients [median age (range): 32 (5-79) years, concomitant IBD: 67% and cirrhosis: 20%] were assayed for the presence of antibodies against to F-actin (AAA IgA/IgG) and gliadin (AGA IgA/IgG)] and for serum level of intestinal fatty acid-binding protein (I-FABP) by ELISA. Markers of lipopolysaccharide (LPS) exposure [LPS binding protein (LBP)] and various anti-microbial antibodies [anti-OMP Plus IgA and endotoxin core IgA antibody (EndoCAb)] were also determined. Poor disease outcome was defined as orthotopic liver transplantation and/or liver-related death during the follow-up [median: 99 (14-106) mo]. One hundred and fifty-three healthy subjects (HCONT) and 172 ulcerative colitis (UC) patients were the controls. RESULTSA total of 28.4%, 28.0%, 9% and 20.9% of PSC patients were positive for AAA IgA, AAA IgG, AGA IgA and AGA IgG, respectively. Frequencies of AAA IgA and AAA IgG (P AAA IgA posvsneg: 365 vs 166 pg/mL, P = 0.011), but not with serum LBP level. CONCLUSIONPresence of IgA type AAA identified PSC patients with progressive disease. Moreover, it is associated with enhanced mucosal immune response to various micr

关键词： Primary sclerosing cholangitis Gut barrier dysfunction Intestinal fatty acid-binding protein Anti-F-actin antibody Anti-gliadin antibody

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Autonomic and sensory nerve dysfunction in primary biliary cirrhosis

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World Journal of Gastroenterology 2004年第20期10卷 3039-3043页

作者： Katalin Keresztes lldikó Istenes Aniko Folhoffer Peter L lakatos Andrea Horvath Timea Csak Peter Varga Peter Kempler ferenc Szalay Ist Department of Medicine Semmelweis UniversityBudapestHungary Ist Department of Medicine Semmelweis UniversityBudapestHungary Professor MDPhD

AIM:Cardiovascular autonomic and peripheral sensoryneuropathy is a known complication of chronic alcoholicand non-alcoholic liver *** aimed to assess theprevalence and risk factors for peripheral sensory nerveand autonomic dysfunction using sensitive methods inpatients with primary biliary cirrhosis (PBC).METHODS:Twenty-four AMA M2 positive female patientswith clinical,biochemical and histological evidence of PBCand 20 age matched healthy female subjects were *** standard cardiovascular reflex tests and 2d-h heartrate variability(HRV)analysis were performed to defineautonomic *** sensory nerve function onmedian and peroneal nerves was characterized by currentperception threshold(CPT),measured by a neuroselectivediagnostic stimulator(Neurotron,Baltimore,MD).RESULTS:Fourteen of 24 patients(58%)had at least oneabnormal cardiovascular reflex test and thirteen(54%)had peripheral sensory *** heart rateresponse to deep breathing(P=0.001),standing(P=0.03)and Valsalva manoeuvre(P=0.01),and more profounddecrease of blood pressure after standing(P=0.03)wasfound in PBC patients than in *** a novel findingwe proved that both time domain and frequency domainparameters of 24-h HRV were significantly reduced in PBCpatients compared to *** patient had at leastone abnormal parameter of *** CPT values indicatedhyperaesthesia as a characteristic feature at peronealnerve testing at three frequencies(2000 Hz:P=0.005;250 Hz:P=0.002;5 Hz:P=0.004)in PBC compared *** of autonomic dysfunction with theseverity and duration of the disease was *** power of HRV correlated with lower CPT values atmedian nerve testing at 250 Hz(P=0.0001)and at 5 Hz(P=0.002),as well as with those at peroneal nerve testingat 2000 Hz(P=0.01).CONCLUSION:Autonomic and sensory nerve dysfunctionsare frequent in ***-four-hour HRV analysis is moresensitive than standard cardiovascular tests for detectingof both pa

关键词： Aged Autonomic Nervous System Diseases Cross-Sectional Studies Female Humans Liver Cirrhosis, Biliary Median Nerve Middle Aged Peripheral Nervous System Diseases Sensory Thresholds

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Prevalence and predictors of hospitalization in Crohn's disease in a prospective population-based inception cohort from 2000-2012

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World Journal of Gastroenterology 2015年第23期21卷 7272-7280页

作者： Petra A Golovics Laszlo lakatos Michael D Mandel Barbara D Lovasz Zsuzsanna Vegh Zsuzsanna Kurti Istvan Szita Lajos S Kiss Tunde Pandur Peter L lakatos First Department of Medicine Semmelweis University Department of Medicine Csolnoky Ferenc Province Hospital

AIM: To analyze the prevalence, length and predictors of hospitalization in the biological era in the populationbased inception cohort from Veszprem ***: Data of 331 incident Crohn's disease(CD) patients diagnosed between January 1, 2000 and December 31, 2010 were analyzed(median age at diagnosis: 28; IQR: 21-40 years). Both in- and outpatient records were collected and comprehensively ***: Probabilities of first CD-related hospitalization and re-hospitalization were 32.3%, 45.5%,53.7% and 13.6%, 23.9%, 29.8%, respectively after one, three and five years of follow-up in Kaplan-Meier analysis. First-year hospitalizations were related to diagnostic procedures(37%), surgery or disease activity(27% and 21%). Non-inflammatory disease behavior at diagnosis(HR = 1.32, P = 0.001) and perianal disease(HR = 1.47, P = 0.04) were associated with time to first CD-related hospitalization, while disease behavior change(HR = 2.38, P = 0.002) and need for steroids(HR = 3.14, P = 0.003) were associated with time to first re-hospitalization in multivariate *** CD-related hospitalization(within the year of diagnosis) was independently associated with need for immunosuppressives(OR = 2.08, P = 0.001) and need for surgeries(OR = 7.25, P < 0.001) during the disease ***: Hospitalization and re-hospitalization rates are still high in this cohort, especially during the first-year after the diagnosis. Non-inflammatory disease behavior at diagnosis was identified as the pivotal predictive factor of both hospitalization and rehospitalization.

关键词： Crohn's disease Hospitalization Recurrence Predictor Population-based Biological therapy

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