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Rebuilding trust in proton pump inhibitor therapy

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World Journal of Gastroenterology 2022年第24期28卷 2667-2679页

作者： Alla Turshudzhyan sonia samuel Angela Tawfik Micheal Tadros Department of Medicine University of ConnecticutFarmingtonCT 06030United States Department of Medicine Albany Medical CollegeAlbanyNY 12208United States Guilderland High School Guilderland CenterAlbanyNY 12085United States Department of Gastroenterology and Hepatology Albany Medical CollegeAlbanyNY 12208United States

Introduction of proton pump inhibitor(PPI)therapy into clinical practice has revolutionized treatment approach to acid-related diseases.With its clinical success came a widespread use of PPI therapy.Subsequently,several studies found that PPIs were oftentimes overprescribed in primary care and emergency setting,likely attributed to seemingly low side-effect profile and physicians having low threshold to initiate therapy.However,now there is a growing concern over PPI side-effect profile among both patients and providers.We would like to bring more awareness to the currently available guidelines on PPI use,discuss clinical indications for PPIs and the evidence behind the reported sideeffects.We hope that increased awareness of proper PPI use will make the initiation or continuation of therapy a well informed and an evidence-based decision between patient and physician.We also hope that discussing evidence behind the reported side-effect profile will help clarify the growing concerns over PPI therapy.

关键词： Proton pump inhibitor Side-effects Gastro-esophageal reflux disease Therapy

Polyoxidovanadates a new therapeutic alternative for neurodegenerative and aging diseases

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Neural Regeneration Research 2024年第3期19卷 571-577页

作者： sonia Irais Gonzalez-Cano Gonzalo Flores Jorge Guevara Julio Cesar Morales-Medina samuel Treviño Alfonso Diaz Faculty of Chemical Sciences Benemerita Autonomous University of PueblaPueblaMexico Institute of Physiology Benemerita Autonomous University of PueblaPueblaMexico Department of Biochemistry Faculty of MedicineNational Autonomous University of MexicoMexico CityMexico Animal Reproduction Research Center CINVESTAV-Autonomous University of TlaxcalaTlaxcalaMexico

Aging is a natural phenomenon characterized by a progressive decline in physiological integrity,leading to a deterioration of cognitive function and increasing the risk of suffering from chronic-degenerative diseases,including cardiovascular diseases,osteoporosis,cancer,diabetes,and neurodegeneration.Aging is considered the major risk factor for Parkinson’s and Alzheimer’s disease develops.Likewise,diabetes and insulin resistance constitute additional risk factors for developing neurodegenerative disorders.Currently,no treatment can effectively reverse these neurodegenerative pathologies.However,some antidiabetic drugs have opened the possibility of being used against neurodegenerative processes.In the previous framework,Vanadium species have demonstrated a notable antidiabetic effect.Our research group evaluated polyoxidovanadates such as decavanadate and metforminium-decavanadate with preventive and corrective activity on neurodegeneration in brain-specific areas from rats with metabolic syndrome.The results suggest that these polyoxidovanadates induce neuronal and cognitive restoration mechanisms.This review aims to describe the therapeutic potential of polyoxidovanadates as insulin-enhancer agents in the brain,constituting a therapeutic alternative for aging and neurodegenerative diseases.

关键词： Alzheimer’s disease antidiabetic brain cognition diabetes insulin neurodegeneration neuroinflammation oxidative stress Vanadium species

Exploring the effects of taurolidine on tumor weight and microvessel density in a murine model of osteosarcoma

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Oncology Research 2024年第7期32卷 1163-1172页

作者： LISANNE K.A.NEIJENHUIS LEUTA L.NAUMANN sonia A.M.FERKEL samuel J.S.RUBIN STEPHAN ROGALLA Division of Gastroenterology and Hepatology Department of MedicineSchool of MedicineStanford UniversityStanford94305USA Department of Surgery Leiden University Medical CenterLeiden2333 ZAThe Netherlands Centre for Human Drug Research Leiden2333 CLThe Netherlands Department of General VisceralVascular and Thoracic SurgeryCharite University Medicine BerlinBerlin10117Germany

Background:Osteosarcoma is the most common malignant primary bone tumor.The prognosis for patients with disseminated disease remains very poor despite recent advancements in chemotherapy.Moreover,current treatment regimens bear a signiﬁcant risk of serious side effects.Thus,there is an unmet clinical need for effective therapies with improved safety proﬁles.Taurolidine is an antibacterial agent that has been shown to induce cell death in different types of cancer cell lines.Methods:In this study,we examined both the antineoplastic and antiangiogenic effects of taurolidine in animal models of osteosarcoma.K7M2 murine osteosarcoma cells were injected,both intramuscular and intraperitoneal,into 60 BALB/c mice on day zero.Animals were then randomized to receive treatment with taurolidine 2%(800 mg/kg),taurolidine 1%(400 mg/kg),or NaCl 0.9%control for seven days by intravenous or intraperitoneal administration.Results:After 35 days,mice were euthanized,and the tumors were harvested for analysis.Eighteen mice were excluded from the analysis due to complications.Body weight was signiﬁcantly lower in the 2%taurolidine intraperitoneal treatment group from day 9 to 21,consistent with elevated mortality in this group.Intraperitoneal tumor weight was signiﬁcantly lower in the 1%(p=0.003)and 2%(p=0.006)intraperitoneal taurolidine treatment groups compared to the control.No antineoplastic effects were observed on intramuscular tumors or for intravenous administration of taurolidine.There were no signiﬁcant differences in microvessel density or mitotic rate between treatment groups.Reduced body weight and elevated mortality in the 2%taurolidine intraperitoneal group suggest that the lower 1%dose is preferable.Conclusions:In conclusion,there is no evidence of antiangiogenic activity,and the antitumor effects of taurolidine on osteosarcoma observed in this study are limited.Moreover,its toxic proﬁle grants further evaluation.Given these observations,further research is necessary to reﬁne the use of taurolidine in osteosarcoma tre

关键词： Osteosarcoma Taurolidine Cancer treatment Chemotherapy Murine models

On the Base Point Locus of Surface Parametrizations:Formulas and Consequences

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Communications in Mathematics and Statistics 2022年第4期10卷 757-783页

作者： David A.Cox sonia Pérez-Díaz J.Rafael Sendra Department of Mathematics and Statistics Amherst CollegeAmherstMA 01002USA Universidad de Alcalá Dpto.de Física y Matemáticas28871 MadridSpain

This paper shows that the multiplicity of the base point locus of a projective rational surface parametrization can be expressed as the degree of the content of a univariate resultant.As a consequence,we get a new proof of the degree formula relating the degree of the surface,the degree of the parametrization,the base point multiplicity and the degree of the rational map induced by the parametrization.In addition,we extend both formulas to the case of dominant rational maps of the projective plane and describe how the base point loci of a parametrization and its reparametrizations are related.As an application of these results,we explore how the degree of a surface reparametrization is affected by the presence of base points.

关键词： Base point Hilbert-samuel multiplicity Surface parametrization Reparametrization Parametrization degree Surface degree