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Green Energy & Environment 2025年第1期10卷 161-172页

作者： Meng-Ying Liu Zhe-Hui Zhang Xue-Qi Wang Qian Sun Chen Zhang Yu Li Zhuohua Sun katalin barta Feng Peng Tong-Qi Yuan State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing100083China Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityBeijing100083China Department of Chemistry Organic and Bioorganic ChemistryUniversity of GrazHeinrichstrasse 28/II8010 GrazAustria

Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent ***,taking advantage of the“lignin first”strategy,corn straw is converted to valuable chemicals including lignin monomers,furfural and 5-methoxymethylfurfural via a two steps *** key of this research lies in the development of a green and low-cost catalytic process utilizing magnetic Raney Ni catalyst and high boiling point ethylene *** utilization of neat ethylene glycol as the sole slovent under atmospheric conditions obviates the need for additional additives,thereby facilitating the entire process to be conducted in glass flasks and rendering it highly convenient for scaling *** the initial step,depolymerization of corn straw lignin resulted in a monomer yield of 18.1 wt%.Subsequently,in a dimethyl carbonate system,the carbohydrate component underwent complete conversion in a one-pot process,yielding furfural and 5-methoxymethylfurfural as the primary products with an impressive yield of 47.7%.

关键词： Atmospheric reductive catalytic fractionation Corn straw Ethylene glycol Raney Ni 5-Methoxymethylfurfural

High yield production of 1,4-cyclohexanediol from lignin derived2,6-dimethoxybenzoquinone via Raney Ni Mn catalyst in hydrogen free conditions

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Journal of Energy Chemistry 2023年第8期83卷 275-286,I0009页

作者： Zhe-Hui Zhang Xianyuan Wu Xiaohong Ren Zeming Rong Zhuohua Sun katalin barta Tong-Qi Yuan Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityBeijing 100083China Stratingh Institute for Chemistry University of GroningenGroningenThe Netherlands State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116012LiaoningChina Department of Chemistry Organic and Bioorganic ChemistryUniversity of GrazHeinrichstrasse 28/Ⅱ8010 GrazAustria

Transformation of lignin to valuable chemicals via sustainable pathways is recognized as one of the most efficient ways to explore its value and replace the nonrenewable petroleum resource. In this work, an environmental-friendly transfer hydrogenation process has been developed to convert lignin derived2,6-dimethoxybenzoquinone to 1,4-cyclohexanediol. Compared with previous work under hydrogen pressure(30 bar), this process uses isopropanol as both solvent and hydrogen donor, which significantly simply the operation process. The core of this study is the design and preparation of Mn modified Raney Ni catalysts by ball milling process. A series of Raney Ni Mn catalysts with different ball milling time and Mn content were prepared and investigated. Characterizations by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), scanning electron microscope(SEM) and transmission electron microscope(TEM) etc. showed that Ni Mn Al alloy was formed during the ball milling process and then transformed to Ni Mn alloy after treatment by aqueous Na OH. After optimization, a yield as high as 86.1% could be achieved for 1,4-cyclohexanediol at 200℃ in only 1 h.

关键词： Lignin Raney Ni 1,4-Cyclohexanediol Transfer hydrogenation

Successful use of adalimumab for treating fistulizing Crohn's disease with pyoderma gangrenosum:Two birds with one stone

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World Journal of Gastroenterology 2009年第18期15卷 2293-2295页

作者： Eva Zold Arpad Nagy katalin Devenyi Margit Zeher Zsolt barta Division of Clinical Immunology 3rd Department of MedicineMedical and Health Science CenterUniversity of DebrecenDebrecen 4004Hungary Euromedic Diagnostics Szeged Kft Debrecen 4004Hungary

Crohn＇s disease （CD） is a chronic relapsing and remitting autoinflammatory disorder of the gastrointestinal tract that has many intestinal and extraintestinal complications. The purpose of treatment is long-term remission, reduction of complications, and improvement of patients＇ quality of life. In many cases, this can be quite challenging and it is necessary to have a well thought out management strategy. We present the case of a 38-year-old woman with fistulizing CD that manifested as diffuse abdominal pain and bloody diarrhea accompanied by arthralgia. In addition, there were ulcerative lesions surrounded by cutaneous inflammation and erythema on her extremities, indicative of pyoderma gangrenosum. The patient was treated with high doses of parenteral methylprednisolone without any improvement and was started on adalimumab. A positive response to adalimumab therapy was observed： after 2 mo of therapy, the ulcerative skin lesion healed completely and the enterogastric fistula was closed affcer 5 mo adalimumab treatment. Adalimumab might be a suitable initial as well as maintenance therapy in patients with complicated CD.

关键词： Adalimumab Crohn's disease Pyoderma gangrenosum

Effect of ageing on colonic mucosal regeneration

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World Journal of Gastroenterology 2011年第25期17卷 2981-2986页

作者： Ferenc Sipos katalin Leiszter Zsolt Tulassay 2nd Department of Internal Medicine Semmelweis University Molecular Medicine Research Unit Hungarian Academy of Sciences

The physiologic and pathologic cellular and molecular changes occurring with age in the human colon affect both the inflammatory process leading to mucosal injury and the regenerative capacity of the *** the one hand,age-related telomere shortening and inflamm-ageing may lead to the development of colonic inflammation,which results in epithelial *** the other hand,the altered migration and function of regenerative stem cells,the age-related methylation of mucosal healing-associated genes,together with the alterations of growth factor signaling with age,may be involved in delayed mucosal *** connections of these alterations to the process of ageing are not fully *** understanding and customtailored modification of these mechanisms are of great clinical importance with regard to disease prevention and modern therapeutic ***,we aim to summarize the age-related microscopic and molecular changes of the human colon,as well as their role in altered mucosal healing.

关键词： Colon Mucosal repair Ageing Colorectalcancer Telomere shortening DNA methylation

Hypokalemic myopathy in a patient with gluten-sensitive enteropathy and dermatitis herpetiformis Duhring: A case report

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World Journal of Gastroenterology 2005年第13期11卷 2039-2040页

作者： Zsolt barta Zsofia Miltenyi Laszlo Toth Arpad Illes 3rd Department of Medicine Department of Pathology

The case of a 22-year-old patient with symptomatic hypokalemia caused by rhabdomyolysis is presented as a rarely reported complication of gluten-sensitive enteropathy (GSE) and dermatitis herpetiformis Duhring. The patient's myopathy ceased on potassium supplementation and her other complaints resolved while on gluten-free *** was otherwise uneventful with a rapid decline in serum CPK level. At the time of her last follow-up a few months later, she was free of symptoms and CPK remained stable. Patients with GSE may present with hypokalemia in association with diarrhea and emesis, and if potassium loss is rapid, rhabdomyolysis may occur.

关键词： Gluten-sensitive enteropathy Hypokalemia RhabdomyolysisAbstract

Pulse cyclophosphamide therapy for inflammatory bowel disease

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World Journal of Gastroenterology 2006年第8期12卷 1278-1280页

作者： Zsolt barta László Tóth Margit Zeher 3~(rd) Department of Medicine Faculty of MedicineMedical and Health Science CentreUniversity of DebrecenDebrecenHungary Department of Pathology Faculty of MedicineMedical and Health Science CentreUniversity of DebrecenDebrecenHungary

AIM:To assess the efficacy of intravenous cyclophos-phamide pulse therapy for refractory inflammatory boweldisease(IBD).METHODS:We included in our cohort eight patientswith(moderate/severe)steroid refractory IBD(4 withulcerative colitis and 4 with Crohn's disease).They allreceived 6 cycles of intravenous cyclophosphamide(800mg)per ***:Patients entered into remission after the sec-ond/third cyclophosphamide *** activity *** were no side effects and *** thepatients went into long lasting *** Crohn's diseasepatients and 3 of 4 ulcerative colitis patients achievedcomplete *** patient with ulcerative colitisshowed an impressive clinical response but did not enterinto *** the maintenance,patients with Crohn'sdisease were treated with methotrexate(15 mg/wk)andpatients with ulcerative colitis were treated with azathio-prine(2.5 mg/kg body weight/d).CONCLUSION:Remission was maintained in all pa-tients for 6 mo on the *** drug was well *** findings suggest that aggressive immuno-suppressive therapy may be useful in some refractorypatients and further controlled study should be consid-ered in order to fully evaluate this type of treatment as apotential therapy for IBD.

关键词： Crohn's disease Ulcerative colitis Cyclophos-phamide

Who will carry out the tests that would be necessary for proper safety evaluation of food emulsifiers?

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Food Science and Human Wellness 2019年第2期8卷 126-135页

作者： katalin FCsáki∗ Éva Sebestyén National Food Chain Safety Office Directorate for Food Safety Risk AssessmentPO BOX 407H-1537 BudapestHungary

Surfactant food emulsifiers are among the most extensively used food *** all authorized food additives,emulsifiers have been evaluated by risk assessors,who consider them as ***,there are growing concerns among scientists about their possible harmful effects on intestinal barriers and *** is also suggested that emulsifier consumption might be one of the main causes of the rising incidence of a number of diseases,such as allergic diseases,celiac disease,type I diabetes and Crohn’s ***,it has recently been suggested that emulsifier consumption might contribute to the development of metabolic syndrome and can promote colitis-associated colorectal cancer *** paper provides an overview of the current scientific knowledge on possible effects of surfactant emulsifiers on intestinal barriers and also of regulatory risk assessment *** main objective is to reveal the reasons for the discrepancies between the opinions of risk assessors and the scientific *** would like to draw the attention of the academic world to the need of specific in vivo and/or clinical studies for each emulsifier in order to help risk assessors make adequate evaluations and rule out with certainty that authorized food emulsifiers pose a safety concern to consumers’health.

关键词： Food emulsifiers Surfactants Intestinal barriers Crohn’s diseases Microbiota Risk assessment EFSA

Classification of submucosal tumors in the gastrointestinal tract

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World Journal of Gastroenterology 2007年第24期13卷 3311-3315页

作者： Laura Graves Ponsaing katalin Kiss Mark Berner Hansen Department ofSurgical Gastroenterology K Bispebjerg University Hospital ofCopenhagen Denmark Department of Pathology Herlev UniversityHospital Gentofte Denmark

This review is part two of three, which will present an update on the classification of gastrointestinal submucosal tumors. Part one treats of the diagnosis and part three of the therapeutic methods regarding gastrointestinal submucosal tumors. In the past there has been some confusion as to the classification of gastrointestinal submucosal tumors. Changes in classifications have emerged due to recent advances in mainly immunohistochemistry and electron microscopy. The aim of this paper is to update the reader on the current classification. Literature searches were performed to find information related to classification of gastrointestinal submucosal tumors. Based on these searches the twelve most frequent submucosal tumor types were chosen for description of their classification. The factors that indicate whether tumors are benign or malignant are mainly size and number of mitotic counts. Gastrointestinal stromal tumors are defined mainly by their CD117 positivity. In the future, there should be no more confusion between gastrointestinal stromal tumors and other types of submucosal tumors.

关键词： Submucosal tumor Immunohistochemistry Smooth muscle derived submucosal tumors Submucosal tumors of neurogenic origin Gastrointestinal stromal tumor Malignant Benign

Celiac disease and microscopic colitis:A report of 4 cases

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World Journal of Gastroenterology 2011年第16期17卷 2150-2154页

作者： Zsolt barta Eva Zold Arpad Nagy Margit Zeher Istvan Csipo 3rd Department of Medicine Institute for Internal MedicineMedical and Health Science CenterUniversity of Debrecen

Celiac disease (CD) is an autoimmune disorder of the small intestine that occurs in genetically predisposed people at all ***,it can be associated also to other immunopathological disorders,and may be associated with abnormal histology in segments of the gut other than the small bowel including colonic *** guidelines for endoscopic investigation of the jejunum are well defined,no indication is defined for colonic *** describe four cases of concurrent CD and microscopic colitis (MC) diagnosed at our department over a 10-year period and analyzed the main features and outcomes of CD in this *** symptoms of these patients were improved initially by a gluten-free diet before the onset of MC *** of the patients were siblings and had an atypical form of *** other two patients with CD and MC also presented with fibrosing alveolitis and were anti-Saccharomyces cerevisiae antibody *** co-existence of immune-mediated small bowel and colonic inflammatory and pulmonary diseases are not well-known,and no systematic approach has been used to identify the lifelong patterns of these immune-based *** can develop,or present with CD at any stage in life,which can co-exist with other gastrointestinal diseases of (auto-) immune *** addition,the fa-milial co-existence and prevalence of MC in patients with a prior diagnosis of CD are *** managing celiac disease should be aware of these associations and understand when to consider colon investigation.

关键词： Collagen colitis Lymphocytic colitis Celiac disease Fibrosing alveolitis Anti-saccharomyces cerevisiae antibody

Clinical relevance of changes in bone metabolism in inflammatory bowel disease

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World Journal of Gastroenterology 2010年第44期16卷 5536-5542页

作者： Pal Miheller katalin Lrinczy Peter Laszlo Lakatos 1st Department of Medicine Semmelweis University

Low bone mineral density is an established, frequent, but often neglected complication in patients with inflammatory bowel disease (IBD). Data regarding the diagnosis, therapy and follow-up of low bone mass in IBD has been partially extrapolated from postmenopausal osteoporosis; however, the pathophysiology of bone loss is altered in young patients with IBD. Fracture, a disabling complication, is the most important clinical outcome of low bone mass. Estimation of fracture risk in IBD is difficult. Numerous risk factors have to be considered, and these factors should be weighed properly to help in the identification of the appropriate patients for screening. In this editorial, the authors aim to highlight the most important clinical aspects of the epidemiology, prevention, diagnosis and treatment of IBD-related bone loss.

关键词： Inflammatory bowel disease Crohn’s disease Osteoporosis Osteopenia Prevention