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Neuroinflammation and epilepsy are different pathologies, but, in some cases, they are so closely related that the activation of one of the pathologies leads to the development of the other. In this work, we discuss the three main cell types involved in neuroinflammation, namely (i) reactive astrocytes, (ii) activated microglia, and infiltration of (iii) peripheral immune cells in the central nervous system. Then, we discuss how neuroinflammation and epilepsy are interconnected and describe the use of different repurposing drugs with anti-inflammatory properties that have been shown to have a beneficial effect in different epilepsy models. This review reinforces the idea that compounds designed to alleviate seizures need to target not only the neuroinflammation caused by reactive astrocytes and microglia but also the interaction of these cells with infiltrated peripheral immune cells.
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Astrocitos , Reposicionamiento de Medicamentos , Epilepsia , Microglía , Enfermedades Neuroinflamatorias , Humanos , Epilepsia/tratamiento farmacológico , Reposicionamiento de Medicamentos/métodos , Enfermedades Neuroinflamatorias/tratamiento farmacológico , Animales , Microglía/efectos de los fármacos , Microglía/metabolismo , Astrocitos/efectos de los fármacos , Astrocitos/metabolismo , Antiinflamatorios/uso terapéutico , Antiinflamatorios/farmacología , Anticonvulsivantes/uso terapéutico , Anticonvulsivantes/farmacologíaRESUMEN
Recent evidence suggests a role of sensory neurons expressing the sodium channel Nav1.8 on the energy homeostasis control. Using a murine diphtheria toxin ablation strategy and ad libitum and time-restricted feeding regimens of control or high-fat high-sugar diets, here we further explore the function of these neurons on food intake and on the regulation of gastrointestinal elements transmitting immune and nutrient sensing.The Nav1.8+ neuron ablation increases food intake in ad libitum and time-restricted feeding, and exacerbates daily body weight variations. Mice lacking Nav1.8+ neurons show impaired prandial regulation of gut hormone secretion and gut microbiota composition, and altered intestinal immunity.Our study demonstrates that Nav1.8+ neurons are required to control food intake and daily body weight changes, as well as to maintain physiological enteroendocrine and immune responses and the rhythmicity of the gut microbiota, which highlights the potential of Nav1.8+ neurons to restore energy balance in metabolic disorders.
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Microbioma Gastrointestinal , Animales , Ratones , Peso Corporal , Dieta Alta en Grasa , Ingestión de Alimentos/fisiología , Microbioma Gastrointestinal/fisiología , Células Receptoras Sensoriales/metabolismoRESUMEN
Lafora disease (LD; OMIM#254780) is a rare, devastating, and fatal form of progressive myoclonus epilepsy that affects young adolescents and has no treatment yet. One of the hallmarks of the disease is the accumulation of aberrant poorly branched forms of glycogen (polyglucosans, PGs) in the brain and peripheral tissues. The current hypothesis is that this accumulation is causative of the pathophysiology of the disease. Another hallmark of LD is the presence of neuroinflammation. We have recently reported the presence of reactive glia-derived neuroinflammation in LD mouse models and defined the main inflammatory pathways that operate in these mice, mainly TNF and IL-6 signaling pathways. In addition, we described the presence of infiltration of peripheral immune cells in the brain parenchyma, which could cooperate and aggravate the neuroinflammatory landscape of LD. In this work, we have checked the beneficial effect of two compounds with the capacity to ameliorate neuroinflammation and reduce leukocyte infiltration into the brain, namely fingolimod and dimethyl fumarate. Our results indicate a beneficial effect of fingolimod in reducing reactive astrogliosis-derived neuroinflammation and T-lymphocyte infiltration, which correlated with the improved behavioral performance of the treated Epm2b-/- mice. On the contrary, dimethyl fumarate, although it was able to reduce reactive astrogliosis, was less effective in preventing neuroinflammation and T-lymphocyte infiltration and in modifying behavioral tests.
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Hypercaloric diets overactivate the intestinal immune system and disrupt the microbiome and epithelial cell functions, impairing glucose metabolism. The origins of this inflammatory cascade are poorly characterized. We investigated the involvement of intestinal proinflammatory group 1 innate lymphoid cells (ILC1s) in obesity progression and metabolic disruption. In obese mice, we studied longitudinally the ILC1s response to the diet and ILC1s depletion to address its role in obesity. ILC1s are required for the expansion of pro-inflammatory macrophages and ILC2s. ILC1s depletion induced the ILC3-IL-22 pathway, increasing mucin production, antimicrobial peptides, and neuroendocrine cells. These changes were translated into higher gut hormones and reduced insulinemia and adiposity. ILC1s depletion was also associated with a bloom in Akkermansia muciniphila and decreases in Bilophila spp. Intestinal-ILC1s are upstream activators of inflammatory signals, connecting immunity with the microbiome, the enteroendocrine system, and the intestinal barrier in the control of glucose metabolism and adiposity.
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Microbioma Gastrointestinal , Inmunidad Innata , Ratones , Animales , Linfocitos/metabolismo , Obesidad/metabolismo , Inflamación , Macrófagos/metabolismo , GlucosaRESUMEN
Lafora disease (LD; OMIM#254780) is a rare form of progressive myoclonus epilepsy (prevalence <1:1,000,000) characterized by the accumulation of insoluble deposits of aberrant glycogen (polyglucosans), named Lafora bodies, in the brain but also in peripheral tissues. LD is the most severe form of the group of progressive myoclonus epilepsies, since patients present a rapid deterioration and dementia with amplification of seizures, leading to death after a decade from the onset of the first symptoms. We have recently described that reactive glia-derived neuroinflammation should be considered a novel hallmark of LD since we observed a florid upregulation of differentially expressed genes in both LD mouse lines, which were mainly related to mediators of inflammatory response. In this work, we define an upregulation of the expression of mediators of the TNF and IL6/JAK2 signaling pathways in LD. In addition, we describe the activation of the non-canonical form of the inflammasome. Furthermore, we describe the infiltration of peripheral immune cells in the brain parenchyma, which could aggravate glia-derived neuroinflammation. Finally, we describe CXCL10 and S100b as blood biomarkers of the disease, which will allow the study of the progression of the disease using serum blood samples. We consider that the identification of these initial inflammatory changes in LD will be very important to implement possible anti-inflammatory therapeutic strategies to prevent the development of the disease.
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Enfermedad de Lafora , Epilepsias Mioclónicas Progresivas , Animales , Ratones , Interleucina-6 , Enfermedad de Lafora/genética , Neuroglía/metabolismo , Enfermedades Neuroinflamatorias , Proteínas Tirosina Fosfatasas no Receptoras/genética , Transducción de Señal , Factores de Necrosis Tumoral/metabolismoRESUMEN
Minimal hepatic encephalopathy (MHE) is associated with changes in the immune system including an increased pro-inflammatory environment and altered differentiation of CD4+ T lymphocytes. The mechanisms remain unknown. Changes in extracellular vesicle (EV) cargo including proteins and miRNAs could play a main role as mediators of immune system changes associated with MHE. The aim was to assess whether plasma EVs from MHE patients played a role in inducing the pro-inflammatory environment and altered differentiation of CD4+ T lymphocyte subtypes in MHE patients. We characterized the miRNA and protein cargo of plasma EVs from 50 cirrhotic patients (27 without and 23 with MHE) and 24 controls. CD4+ T cells from the controls were cultured with plasma EVs from the three groups of study, and the cytokine release and differentiation to CD4+ T-cell subtypes were assessed. Plasma EVs from MHE patients had altered miRNA and protein contents, and were enriched in inflammatory factors compared to the controls and patients without MHE. EVs from MHE patients modulated the expression of pro-inflammatory IL-17, IL-21, and TNF-α and anti-inflammatory TGF-ß in cultured CD4+ T lymphocytes, and increased the proportion of Th follicular and Treg cells and the activation of Th17 cells. In conclusion, plasma EVs could play an important role in the induction of immune changes observed in MHE.
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Vesículas Extracelulares , Encefalopatía Hepática , MicroARNs , Humanos , Interleucina-17/metabolismo , Factor de Necrosis Tumoral alfa/metabolismo , Vesículas Extracelulares/metabolismo , Citocinas/metabolismo , Linfocitos T Colaboradores-Inductores , MicroARNs/genética , MicroARNs/metabolismo , Factor de Crecimiento Transformador beta/metabolismo , Cirrosis Hepática/metabolismoRESUMEN
B and T cell receptor (immune) repertoires can represent an individual's immune history. While current repertoire analysis methods aim to discriminate between health and disease states, they are typically based on only a limited number of parameters. Here, we introduce immuneREF: a quantitative multidimensional measure of adaptive immune repertoire (and transcriptome) similarity that allows interpretation of immune repertoire variation by relying on both repertoire features and cross-referencing of simulated and experimental datasets. To quantify immune repertoire similarity landscapes across health and disease, we applied immuneREF to >2,400 datasets from individuals with varying immune states (healthy, [autoimmune] disease, and infection). We discovered, in contrast to the current paradigm, that blood-derived immune repertoires of healthy and diseased individuals are highly similar for certain immune states, suggesting that repertoire changes to immune perturbations are less pronounced than previously thought. In conclusion, immuneREF enables the population-wide study of adaptive immune response similarity across immune states.
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Inmunidad Adaptativa , Enfermedades Autoinmunes , Humanos , Receptores de Antígenos de Linfocitos T/genética , Receptores InmunológicosRESUMEN
Ribosomes execute the transcriptional program in every cell. Critical to sustain nearly all cellular activities, ribosome biogenesis requires the translation of ~200 factors of which 80 are ribosomal proteins (RPs). As ribosome synthesis depends on RP mRNA translation, a priority within the translatome architecture should exist to ensure the preservation of ribosome biogenesis capacity, particularly under adverse growth conditions. Here, we show that under critical metabolic constraints characterized by mTOR inhibition, LARP1 complexed with the 40S subunit protects from ribophagy the mRNAs regulon for ribosome biogenesis and protein synthesis, acutely preparing the translatome to promptly resume ribosomes production after growth conditions return permissive. Characterizing the LARP1-protected translatome revealed a set of 5'TOP transcript isoforms other than RPs involved in energy production and in mitochondrial function, among other processes, indicating that the mTOR-LARP1-5'TOP axis acts at the translational level as a primary guardian of the cellular anabolic capacity.
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Expression of the phosphatase of regenerating liver-3 (PRL-3) is known to promote tumor growth in gastrointestinal adenocarcinomas, and the incidence of tumor formation upon inflammatory events correlates with PRL-3 levels in mouse models. These carcinomas and their onset are associated with the impairment of intestinal cell homeostasis, which is regulated by a balanced number of Paneth cells and Lgr5 expressing intestinal stem cells (Lgr5+ ISCs). Nevertheless, the consequences of PRL-3 overexpression on cellular homeostasis and ISC fitness in vivo are unexplored. Here, we employ a doxycycline-inducible PRL-3 mouse strain to show that aberrant PRL-3 expression within a non-cancerous background leads to the death of Lgr5+ ISCs and to Paneth cell expansion. A higher dose of PRL-3, resulting from homozygous expression, led to mice dying early. A primary 3D intestinal culture model obtained from these mice confirmed the loss of Lgr5+ ISCs upon PRL-3 expression. The impaired intestinal organoid formation was rescued by a PRL inhibitor, providing a functional link to the observed phenotypes. These results demonstrate that elevated PRL-3 phosphatase activity in healthy intestinal epithelium impairs intestinal cell homeostasis, which correlates this cellular mechanism of tumor onset with PRL-3-mediated higher susceptibility to tumor formation upon inflammatory or mutational events.Key messages⢠Transgenic mice homozygous for PRL-3 overexpression die early.⢠PRL-3 heterozygous mice display disrupted intestinal self-renewal capacity.⢠PRL-3 overexpression alone does not induce tumorigenesis in the mouse intestine.⢠PRL-3 activity leads to the death of Lgr5+ ISCs and Paneth cell expansion.⢠Impairment of cell homeostasis correlates PRL-3 action with tumor onset mechanisms.
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Homeostasis/fisiología , Proteínas Inmediatas-Precoces/metabolismo , Mucosa Intestinal/metabolismo , Intestinos/metabolismo , Proteínas de Neoplasias/metabolismo , Proteínas Tirosina Fosfatasas/metabolismo , Animales , Diferenciación Celular/fisiología , Proliferación Celular/fisiología , Modelos Animales de Enfermedad , Femenino , Humanos , Mucosa Intestinal/patología , Intestinos/patología , Masculino , Ratones , Ratones Transgénicos , Organoides/metabolismo , Organoides/patología , Células de Paneth/metabolismo , Células de Paneth/patología , Transducción de Señal/fisiología , Células Madre/metabolismo , Células Madre/patologíaRESUMEN
BACKGROUND: The Environmental Determinants of Diabetes in the Young (TEDDY) is a prospective birth cohort designed to study type 1 diabetes (T1D) by following children with high genetic risk. An integrative multi-omics approach was used to evaluate islet autoimmunity etiology, identify disease biomarkers, and understand progression over time. RESULTS: We identify a multi-omics signature that was predictive of islet autoimmunity (IA) as early as 1 year before seroconversion. At this time, abnormalities in lipid metabolism, decreased capacity for nutrient absorption, and intracellular ROS accumulation are detected in children progressing towards IA. Additionally, extracellular matrix remodeling, inflammation, cytotoxicity, angiogenesis, and increased activity of antigen-presenting cells are observed, which may contribute to beta cell destruction. Our results indicate that altered molecular homeostasis is present in IA-developing children months before the actual detection of islet autoantibodies, which opens an interesting window of opportunity for therapeutic intervention. CONCLUSIONS: The approach employed herein for assessment of the TEDDY cohort showcases the utilization of multi-omics data for the modeling of complex, multifactorial diseases, like T1D.
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Autoinmunidad/inmunología , Diabetes Mellitus Tipo 1/inmunología , Inflamación/inmunología , Metabolismo de los Lípidos/genética , Especies Reactivas de Oxígeno/metabolismo , Autoanticuerpos/genética , Autoanticuerpos/inmunología , Autoinmunidad/genética , Biomarcadores , Estudios de Casos y Controles , Quimiocinas/genética , Estudios de Cohortes , Citocinas/genética , Diabetes Mellitus Tipo 1/genética , Progresión de la Enfermedad , Femenino , Expresión Génica , Predisposición Genética a la Enfermedad , Humanos , Inflamación/genética , Masculino , Metabolómica , Estudios Prospectivos , Factores de RiesgoRESUMEN
Patients with liver cirrhosis may develop minimal hepatic encephalopathy (MHE) which affects their quality of life and life span. It has been proposed that a shift in peripheral inflammation triggers the appearance of MHE. However, the mechanisms involved in this immune system shift remain unknown. In this work we studied the broad molecular changes involved in the induction of MHE with the goal of identifying (1) altered genes and pathways in peripheral blood cells associated to the appearance of MHE, (2) serum metabolites and cytokines with modified levels in MHE patients and (3) MHE-regulated immune response processes related to changes in specific serum molecules. We adopted a multi-omic approach to profile the transcriptome, metabolome and a panel of cytokines of blood samples taken from cirrhotic patients with or without MHE. Transcriptomic analysis supports the hypothesis of alternations in the Th1/Th2 and Th17 lymphocytes cell populations as major drivers of MHE. Cluster analysis of serum molecules resulted in six groups of chemically similar compounds, suggesting that functional modules operate during the induction of MHE. Finally, the multi-omic integrative analysis suggested a relationship between cytokines CCL20, CX3CL1, CXCL13, IL-15, IL-22 and IL-6 with alteration in chemotaxis, as well as a link between long-chain unsaturated phospholipids and the increased fatty acid transport and prostaglandin production. We found altered immune pathways that may collectively contribute to the mild cognitive impairment phenotype in MHE. Our approach is able to combine extracellular and intracellular information, opening new insights to the understanding of the disease.
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Citocinas/sangre , Encefalopatía Hepática/genética , Inflamación/genética , Cirrosis Hepática/genética , Vías Biosintéticas/genética , Femenino , Encefalopatía Hepática/sangre , Encefalopatía Hepática/complicaciones , Encefalopatía Hepática/metabolismo , Humanos , Sistema Inmunológico/inmunología , Sistema Inmunológico/metabolismo , Inflamación/sangre , Inflamación/complicaciones , Inflamación/inmunología , Cirrosis Hepática/sangre , Cirrosis Hepática/complicaciones , Cirrosis Hepática/metabolismo , Linfocitos/metabolismo , Masculino , Metaboloma/genética , Persona de Mediana Edad , Calidad de Vida , Transcriptoma/genéticaRESUMEN
The aim of this paper is to present the methodology and results of a study on the role played by an institution in higher education, the ESIC Business & Marketing School, in teaching different master's degree programmes to examine whether they respond to the demands of potential entrepreneurs who are seeking to acquire the tools and develop the skills necessary to eventually become successful. The main conclusions were that the students with the intention of achieving a higher level of entrepreneurial skills were enroled in the Executive Master of Business Administration (EMBA) programme without omitting other master's degree programmes also chosen by students with entrepreneurial concerns. It was also found that the variable with the highest impact on entrepreneurial motivation was family environment. Our data lead us to maintain that these students were not always going to start up a new business. The originality of this paper comes from our survey with 1,135 responses from the master's degree programmes taught in five cities in Spain with the inclusion of an analysis for LATAM students.
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One largely unknown question in cell biology is the discrimination between inconsequential and functional transcriptional events with relevant regulatory functions. Here, we find that the oncofetal HMGA2 gene is aberrantly reexpressed in many tumor types together with its antisense transcribed pseudogene RPSAP52. RPSAP52 is abundantly present in the cytoplasm, where it interacts with the RNA binding protein IGF2BP2/IMP2, facilitating its binding to mRNA targets, promoting their translation by mediating their recruitment on polysomes and enhancing proliferative and self-renewal pathways. Notably, downregulation of RPSAP52 impairs the balance between the oncogene LIN28B and the tumor suppressor let-7 family of miRNAs, inhibits cellular proliferation and migration in vitro and slows down tumor growth in vivo. In addition, high levels of RPSAP52 in patient samples associate with a worse prognosis in sarcomas. Overall, we reveal the roles of a transcribed pseudogene that may display properties of an oncofetal master regulator in human cancers.
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Regulación Neoplásica de la Expresión Génica , MicroARNs/genética , Proteínas/genética , Seudogenes/genética , Proteínas de Unión al ARN/genética , Transducción de Señal/genética , Animales , Neoplasias de la Mama/genética , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/terapia , Línea Celular , Línea Celular Tumoral , Femenino , Perfilación de la Expresión Génica/métodos , Proteína HMGA2/genética , Proteína HMGA2/metabolismo , Humanos , Estimación de Kaplan-Meier , Células MCF-7 , Ratones Desnudos , Proteínas/metabolismo , Proteínas de Unión al ARN/metabolismo , Tratamiento con ARN de Interferencia/métodos , Transcripción Genética , Carga Tumoral/genética , Ensayos Antitumor por Modelo de Xenoinjerto/métodos , Proteínas ras/genética , Proteínas ras/metabolismoRESUMEN
The maintenance of the epithelial architecture during tissue proliferation is achieved by apical positioning of the midbody after cell division. Consequently, midbody mislocalization contributes to epithelial architecture disruption, a fundamental event during epithelial tumorigenesis. Studies in 3D polarized epithelial MDCK or Caco2 cell models, where midbody misplacement leads to multiple ectopic but fully polarized lumen-containing cysts, revealed that this phenotype can be caused by 2 different scenarios: the loss of mitotic spindle orientation or the loss of asymmetric abscission. In addition, we have recently proposed a third cellular mechanism where the midbody mislocalization is achieved through cytokinesis acceleration driven by the cancer-promoting phosphatase of regenerating liver (PRL)-3. Here we critically review these findings, and we furthermore present new data indicating that midbodies themselves might act as signal unit for polarization since they can infer apical characteristics to a basal membrane.
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The animal microbiota (including the human microbiota) plays an important role in keeping the physiological status of the host healthy. Research seeks greater insight into whether changes in the composition and function of the microbiota are associated with disease. We analyzed published 16S rRNA and shotgun metagenomic sequencing (SMS) data pertaining to the gut microbiotas of 99 subjects monitored over time. Temporal fluctuations in the microbial composition revealed significant differences due to factors such as dietary changes, antibiotic intake, age, and disease. This article shows that a fluctuation scaling law can describe the temporal changes in the gut microbiota. This law estimates the temporal variability of the microbial population and quantitatively characterizes the path toward disease via a noise-induced phase transition. Estimation of the systemic parameters may be of clinical utility in follow-up studies and have more general applications in fields where it is important to know whether a given community is stable or not. IMPORTANCE The human microbiota correlates closely with the health status of its host. This article analyzes the microbial composition of several subjects under different conditions over time spans that ranged from days to months. Using the Langevin equation as the basis of our mathematical framework to evaluate microbial temporal stability, we proved that stable microbiotas can be distinguished from unstable microbiotas. This initial step will help us to determine how temporal microbiota stability is related to a subject's health status and to develop a more comprehensive framework that will provide greater insight into this complex system.
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The phosphatase of regenerating liver (PRL)-3 is overexpressed in many human cancer types and tumor metastases when compared with healthy tissues. Different pathways and mechanisms have been suggested to modulate PRL-3 expression levels and activity, giving some valuable insights but still leaving an incomplete picture. Investigating these mechanisms could provide new targets for therapeutic drug development. Here, we present an updated overview and summarize recent findings concerning the different PRL-3 expression regulatory mechanisms and posttranslational modifications suggested to modulate the activity, localization, or stability of this phosphatase.
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Regulación Enzimológica de la Expresión Génica , Regulación Neoplásica de la Expresión Génica , Proteínas de Neoplasias/genética , Neoplasias/genética , Proteínas Tirosina Fosfatasas/genética , Estabilidad de Enzimas , Humanos , Modelos Genéticos , Metástasis de la Neoplasia , Proteínas de Neoplasias/metabolismo , Neoplasias/enzimología , Neoplasias/patología , Procesamiento Proteico-Postraduccional , Proteínas Tirosina Fosfatasas/metabolismo , Transducción de Señal/genéticaRESUMEN
Disruption of epithelial architecture is a fundamental event during epithelial tumorigenesis. We show that the expression of the cancer-promoting phosphatase PRL-3 (PTP4A3), which is overexpressed in several epithelial cancers, in polarized epithelial MDCK and Caco2 cells leads to invasion and the formation of multiple ectopic, fully polarized lumens in cysts. Both processes disrupt epithelial architecture and are hallmarks of cancer. The pathological relevance of these findings is supported by the knockdown of endogenous PRL-3 in MCF-7 breast cancer cells grown in three-dimensional branched structures, showing the rescue from multiple-lumen- to single-lumen-containing branch ends. Mechanistically, it has been previously shown that ectopic lumens can arise from midbodies that have been mislocalized through the loss of mitotic spindle orientation or through the loss of asymmetric abscission. Here, we show that PRL-3 triggers ectopic lumen formation through midbody mispositioning without altering the spindle orientation or asymmetric abscission, instead, PRL-3 accelerates cytokinesis, suggesting that this process is an alternative new mechanism for ectopic lumen formation in MDCK cysts. The disruption of epithelial architecture by PRL-3 revealed here is a newly recognized mechanism for PRL-3-promoted cancer progression.
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Forma de la Célula , Células Epiteliales/citología , Células Epiteliales/metabolismo , Mitosis , Proteínas de Neoplasias/metabolismo , Proteínas Tirosina Fosfatasas/metabolismo , Animales , Células CACO-2 , Polaridad Celular , Citocinesis , Perros , Humanos , Células MCF-7 , Células de Riñón Canino Madin Darby , Modelos BiológicosRESUMEN
The FDA's MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. Search of Drug Safety Labeling Changes (SLC) database was conducted on October 10, 2016 for date range "7/1/2016-9/30/2016", labeling section "Boxed Warning". These and other label changes are searchable in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. (Drug Safety Labeling Changes are available at: http://www.accessdata.fda.gov/scripts/cder/safetylabelingchanges/?source=govdelivery&utm_medium=email&utm_source=govdelivery.) Boxed warnings are ordinarily used to highlight either: adverse reactions so serious in proportion to the potential benefit from the drug that it is essential that it be considered in assessing the risks and benefits of using the drug; OR serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; OR FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
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As part of the US Food and Drug Administration's MedWatch program, safety labeling changes are reviewed and compiled monthly for drugs and therapeutic biologics where important changes have been made to the safety information. Boxed warnings (http://www.fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/ucm075096.pdf) are ordinarily used to highlight either adverse reactions so serious in proportion to the potential benefit from the drug that it is essential that it be considered in assessing the risks and benefits of using the drugs or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted. There was 1 revised boxed warning from October to December 2015.