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Pancreatic adenocarcinoma:Beyond first line,where are we?

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World Journal of Gastroenterology 2021年第17期27卷 1847-1863页

作者： Sara Cherri Silvia Noventa alberto Zaniboni Department of Oncology Fondazione PoliambulanzaBrescia 25124Italy

Pancreatic cancer is considered one of the most aggressive cancers,with an increasing incidence in recent *** date,chemotherapy is still the standard of care for advanced metastatic disease,unfortunately providing only a slight advantage in terms of *** molecular and cellular characteristics of pancreatic cancer cells,as well as the cells that characterize the pancreatic tumour microenvironment,are the basis of the mechanisms of resistance to *** progression during first-line treatment,few patients are eligible for secondline treatment due to the loss of performance *** date,a clear survival advantage has not yet been demonstrated for second-line *** medicine could be the key to increasing responses to cancer treatment and finally impacting survival in this difficult-to-treat *** this review,we analyze current recommendations in the second-line setting and potential future prospects.

关键词： Pancreatic adenocarcinoma Second-line Chemotherapy Targeted therapy Immunotherapy

Strigolactone Analogs as Molecular Probes in Chasing the （SLs） Receptor/s： Design and Synthesis of Fluorescent Labeled Molecules

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Molecular Plant 2013年第1期6卷 113-127页

作者： Cristina Prandi Helena Rosso Beatrice Lace Ernesto G. Occhiatot alberto Oppedisano Silvia Tabasso Gabriele alberto Marco Blangetti Dipartimento di Chimica-Universita di Torino via R Giuria 7 10127 Torino Italy Dipartimento di Scienze della Vita e Biologia dei Sistemi Viale Mattioli 25 10125 Torino Italy Dipartimento di Chimica 'Ugo Schiff' Universita di Firenze Via della Lastruccia 13 50019 Sesto Fiorentino (FI) Italy School of Chemistry and Chemical Biology University College Dublin Belfield Dublin 4 Ireland

Originally identified as allelochemicals involved in plant-parasite interactions, more recently, Strigolactones （SLs） have been shown to play multiple key roles in the rhizosphere communication between plants and mycorrhizal fungi. Even more recent is the hormonal role ascribed to SLs which broadens the biological impact of these relatively simple molecules. In spite of the crucial and multifaceted biological role of SLs, there are no data on the receptor（s） which bind（s） such active molecules, neither in the producing plants nor in parasitic weeds or AM fungi. Information about the putative receptor of SLs can be gathered by means of structural, molecular, and genetic approaches. Our contribution on this topic is the design and synthesis of fluorescent labeled SL analogs to be used as probes for the detection in vivo of the receptor（s）. Knowledge of the putative receptor structure will boost the research on analogs of the natural substrates as required for agricultural applications.

关键词： strigolactones parasitic weeds mycorrhizal fungi receptor fluorescence.

New drugs for the treatment of metastatic colorectal cancer

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World Journal of Gastrointestinal Oncology 2021年第11期13卷 1551-1560页

作者： Sara Cherri Michela Libertini alberto Zaniboni Department of Oncology Fondazione PoliambulanzaBrescia 25124Italy

Colorectal cancer(CRC)represents one of the most frequent malignancies in terms of incidence and mortality,thus representing the third leading cause of cancer death *** the last decade,few drugs have enriched the treatment landscape of metastatic CRC and have significantly affected *** other neoplasms,metastatic CRC patients who have exhausted treatment options often still maintain a good performance *** are many challenges to increasing potential treatment options,notably a better understanding of disease biology and the mechanisms of resistance underlying cancer treatment *** development of new drugs for metastatic CRC certainly represents one of the most important challenges in medical *** article discusses the main limitations in the development of new drugs and potential future *** particular,we addressed three questions:(1)The main limitations of targeted therapy in the treatment of metastatic CRC(mCRC);(2)New target armamentarium that could escape primary and secondary resistance and lead to more personalized mCRC therapy;and(3)Future directions.

关键词： Colon cancer Colon rectal cancer New drugs Drug resistance Metastatic colorectal cancer

Effect of Exogenous Melatonin on Seed Germination and Seedling Growth in Melon(Cucumis melo L.) Under Salt Stress

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Horticultural Plant Journal 2019年第2期5卷 79-87页

作者： José Luis Casta?ares Carlos alberto Bouzo Plant Physiology Laboratory Department of Basic Sciences Universidad Nacional de Luján Laboratory of Research in Physiology and Plant Molecular Biology Facultad de Ciencias Agrarias Universidad Nacional del Litoral

An investigation was carried out to evaluate the effect of different application forms and concentrations of melatonin on germination and initial growth of melon plants in several different salinity conditions. We evaluated germination percentage and growth of seedlings and measured total chlorophyll content, relative electrolyte leakage, peroxidase activity, root viability, proline concentration, relative water content,Na^+/K^+ratio in green parts and K^+leakage from roots. Seed germination percentage under salt stress increased with treatments of 10 and50 μmol·L^(-1) melatonin. Seed treatment and plant watering with melatonin at 50 μmol·L^(-1) improved growth parameters and plants showed higher chlorophyll content as well as better biochemical parameters than non-treated plants. Results suggest that melatonin can alleviate the effect of salt stress during seed germination and first stages of plant development.

关键词： melon melatonin salt stress germination antioxidation

Hepcidin modulation in human diseases: From research to clinic

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World Journal of Gastroenterology 2009年第5期15卷 538-551页

作者： alberto Piperno Raffaella Mariani Paola Trombini Domenico Girelli Department of Clinical Medicine and Prevention University of Milano-Bicocca Monza 20052 Italy Centre for Diagnosis and Treatment of Hemochromatosis and Iron Overload Diseases San Gerardo Hospital Monza 20052 Italy Department of Clinical and Experimental Medicine University of Verona Verona 37100 Italy

By modulating hepcidin production, an organism controls intestinal iron absorption, iron uptake and mobilization from stores to meet body iron need. In recent years there has been important advancement in our knowledge of hepcidin regulation that also has implications for understanding the physiopathology of some human disorders. Since the discovery of hepcidin and the demonstration of its pivotal role in iron homeostasis, there has been a substantial interest in developing a reliable assay of the hormone in biological fluids. Measurement of hepcidin in biological fluids can improve our understanding of iron diseases and be a useful tool for diagnosis and clinical management of these disorders. We reviewed the literature and our own research on hepcidin to give an updated status of the situation in this rapidly evolving field.

关键词： Hepcidin Iron homeostasis Erythropoiesis Hemochromatosis Anemia Liver diseases

Could autophagy dysregulation link neurotropic viruses to Alzheimer’s disease?

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Neural Regeneration Research 2019年第9期14卷 1503-1506页

作者： Maria Anele Romeo alberto Faggioni Mara Cirone Department of Experimental Medicine Sapienza University of Rome Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti

Neurotropic herpesviruses have been associated with the onset and progression of Alzheimer’s disease,a common form of dementia that afflicts a large percentage of elderly ***,among the neurotropic herpesviruses,herpes simplex virus-1,human herpesvirus-6A,and human herpesvirus-6B have been reported to infect several cell types present in the central nervous system and to dysregulate autophagy,a process required for homeostasis of cells,especially *** autophagosome accumulation,indicating an unbalance between autophagosome formation and autophagosome degradation,has been observed in neurons of Alzheimer’s disease patients and may play a role in the intracellular and extracellular accumulation of amyloidβand in the altered protein tau ***,herpesvirus infection of central nervous system cells such as glia and microglia can increase the production of oxidant species through the alteration of mitochondrial dynamics and promote inflammation,another hallmark of Alzheimer’s *** evidence suggests that it is worth further investigating the role of neurotropic herpesviruses,particularly human herpesvirus-6A/B,in the etiopathogenesis of Alzheimer’s disease.

关键词： Alzheimer’s disease autophagy HHV-6A HHV-6B HSV-1 neurotropic viruses amyloidβ tau protein reactive oxygen species inflammation AD

Robotic choledochoduodenostomy for complicated common bile duct stones-a video vignette

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Hepatobiliary & Pancreatic Diseases International 2021年第3期20卷 296-297页

作者： Francesco Guerra Filippo Petrelli alberto Patriti Division of Surgery-Ospedali Riuniti Marche Nord Piazzale Cinelli 361121 PesaroItaly

Despite that endoscopic retrograde cholangiopancreatography(ERCP) has become the gold standard in the treatment of benign biliary obstruction, bilioenteric anastomosis still represents a valid option to treat the increasing number of patients with recalcitrant obstruction, and/or altered anatomy after digestive surgery [1,2]. Minimally invasive techniques have become the standard of care for the surgery of the biliary tract in specialized centers [2,3].

关键词： anatomy obstruction surgery

Major regulatory mechanisms involved in sperm motility

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Asian Journal of Andrology 2017年第1期19卷 5-14页

作者： Rute Pereira Rosalia Sa alberto Barros Mario Sousa Department of Microscopy Laboratory of Cell Biology Institute of Biomedical Sciences Abel Salazar University of Porto (ICBAS-UP) Rua Jorge Viterbo Ferreira 2284050-313 Porto Portugal and Multidisciplinary Unit for Biomedical Research-UMIB ICBAS-UP Centre for Reproductive Genetics alberto Barros Av. do Bessa 2401° Dto. Frente 4100-012 Porto Portugal Department of Genetics Faculty of Medicine University of Porto. Alameda Prof. Hernani Monteiro 4200-319 Porto Portugal and Institute of Health Research an Innovation (13S) University of Porto Portugal.

The genetic bases and molecular mechanisms involved in the assembly and function of the flagellum components as well as in the regulation of the flagellar movement are not fully understood, especially in humans. There are several causes for sperm immotility, of which some can be avoided and corrected, whereas other are related to genetic defects and deserve full investigation to give a diagnosis to patients. This review was performed after an extensive literature search on the online databases PubMed, ScienceDirect, and Web of Science. Here, we review the involvement of regulatory pathways responsible for sperm motility, indicating possible causes for sperm immotility. These included the calcium pathway, the cAMP-dependent protein kinase pathway, the importance of kinases and phosphatases, the function of reactive oxygen species, and how the regulation of cell volume and osmolarity are also fundamental components. We then discuss main gene defects associated with specific morphological abnormalities. Finally, we slightly discuss some preventive and treatments approaches to avoid development of conditions that are associated with unspecified sperm immotility. We believe that in the near future, with the development of more powerful techniques, the genetic causes of sperm immotility and the regulatory mechanisms of sperm motility will be better understand, thus enabling to perform a full diagnosis and uncover new therapies.

关键词： antioxidants calcium membrane channels protein kinases sperm genetic abnormalities sperm motility

Spatial and temporal spread of Citrus tristeza virus and its aphid vectors in the North western area of Morocco

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Insect Science 2016年第6期23卷 903-912页

作者： Abdesslam Elhaddad Amal ElAmrani alberto Fereres Aranzazu Moreno Faculty of Science and Technics of Tangier Abdelmalek Essaadi University Morocco- Ancienne Route de I'Aeroport Km 10 Ziaten. BP:416 Tanger Morocco Instituto de Ciencias Agrarias Consejo Superior de Investigaciones Cientificas (ICA-CSIC) CISerrano 115 dpdo. 28006 Madrid Spain

First report of Citrus tristeza virus （CTV, Closterovirus） in Morocco datesback to 1961 in collections of citrus varieties. An exhaustive survey of citrus in the north of the country in 2009 revealed that CTV was spread all over the citrus production area. We attempted to evaluate the relative contribution of different aphid species in the spread of CTV disease in a Citrus reticulata orchard at the Loukkous region during 2 years （2012 and 2013）. The overall CTV incidence estimated in the experimental site increased from 17.8% in 2012 to 31.15% in 2013. The most abundant aphid species colonising clementine trees was Aphis spiraecola and A. gossypii. Both aphid species reached their maximum peaks during the spring season. The rate of viruliferous aphids, estimated by real-time RT-PCR of single aphid, revealed that 35.4% of winged A. gossypii and 28.8% of winged A. spiraecola were viruliferous, confirming a high inoculum pressure in the area surrounding the experimental site. The aphid species Toxoptera citricida, which is able to transmit the aggressive isolates of CTV, was not found in the Loukkous region. The study of the spatial distribution of the CTV showed that in general, the disease was randomly distributed in the field. Overall, the results seem to indicate that A. spiraecola may be considered as the major aphid species contributing to CTV spread in our experimental conditions. The prevalence of mild strains in the region and the high level of aphid flight activity could explain the rapid evolution of CTV incidence in the experimental area.

关键词： aphids Aphis gossypii Aphis spiraecola citrus Citrus tristeza virus spatial distribution