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1.
Biochim Biophys Acta Mol Basis Dis ; 1871(1): 167515, 2024 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-39278512

RESUMEN

Pancreatic cancer is a highly malignant tumor characterized by high mortality and low survival rates. The mitotic interactor and substrate of Plk1 (MISP) is a cancer-associated protein that regulates mitotic spindle localization and is highly expressed in several malignant tumors, contributing to tumor development. However, the function and regulatory mechanisms of MISP in pancreatic cancer remain unclear. In this study, we analyzed RNA sequencing data related to pancreatic cancer from the TCGA and GEO databases, identifying MISP as a potential prognostic marker for the disease. MISP was significantly upregulated in pancreatic cancer cells and tissues compared to normal pancreatic cells and tissues. Notably, in pancreatic cancer cells, high MISP protein expression promoted cell proliferation and growth. Mechanistically, the upregulation of MISP facilitated the nuclear accumulation of ß-catenin, thereby activating the Wnt/ß-catenin signaling pathway and promoting pancreatic cancer growth. In search of effective inhibitors of MISP expression, we screened an FDA-approved drug library and identified Fisetin as a potential suppressor of MISP expression. Fisetin was found to downregulate the transcription factor MYB, thereby reducing MISP expression. Further experiments demonstrated that Fisetin effectively inhibited the in vitro and in vivo growth of pancreatic cancer by suppressing the MISP/Wnt/ß-catenin signaling axis. In summary, our research has identified MISP as a novel therapeutic target in pancreatic cancer and uncovered its associated regulatory mechanisms.

2.
Curr Oncol ; 31(5): 2769-2779, 2024 05 14.
Artículo en Inglés | MEDLINE | ID: mdl-38785491

RESUMEN

Gastric cancer is the fifth most common cancer and the fourth cause of global cancer mortality. The identification of new biomarkers and drug targets is crucial to allow the better prognosis and treatment of patients. The mitotic spindle positioning (MISP) protein has the function of correcting mitotic spindle positioning and centrosome clustering and has been implicated in the cytokinesis and migration of cancer cells. The goal of this work was to evaluate the expression and clinical relevance of MISP in gastric cancer. MISP expression was evaluated by immunohistochemistry in a single hospital series (n = 286) of gastric adenocarcinomas and compared with normal gastric mucosa and intestinal metaplasia, a preneoplastic lesion. MISP was detected on the membrane in 83% of the cases, being overexpressed in gastric cancer compared to normal gastric mucosa (n = 10). Its expression was negatively associated with diffuse and poorly cohesive types. On the other hand, it was strongly expressed in intestinal metaplasia where it was associated with MUC2 and CDX2 expression. Furthermore, when we silenced MISP in vitro, a significant decrease in the viability of gastric carcinoma cells was observed. In conclusion, MISP is overexpressed in gastric cancer, being associated with an intestinal phenotype in gastric carcinogenesis and having a role in cellular proliferation.


Asunto(s)
Metaplasia , Proteínas de Microfilamentos , Neoplasias Gástricas , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adenocarcinoma/patología , Biomarcadores de Tumor , Proteínas de Ciclo Celular/genética , Proteínas de Ciclo Celular/metabolismo , Línea Celular Tumoral , Mucosa Gástrica/patología , Mucosa Gástrica/metabolismo , Neoplasias Gástricas/patología , Neoplasias Gástricas/genética , Proteínas de Microfilamentos/genética , Proteínas de Microfilamentos/metabolismo , Fosfoproteínas/genética , Fosfoproteínas/metabolismo
3.
Int J Mol Sci ; 25(5)2024 Mar 06.
Artículo en Inglés | MEDLINE | ID: mdl-38474305

RESUMEN

Patients with inflammatory bowel disease (IBD) who experience long-term chronic inflammation of the colon are at an increased risk of developing colorectal cancer (CRC). Mitotic spindle positioning (MISP), an actin-binding protein, plays a role in mitosis and spindle positioning. MISP is found on the apical membrane of the intestinal mucosa and helps stabilize and elongate microvilli, offering protection against colitis. This study explored the role of MISP in colorectal tumorigenesis using a database, human CRC cells, and a mouse model for colitis-induced colorectal tumors triggered by azoxymethane (AOM)/dextran sodium sulfate (DSS) treatment. We found that MISP was highly expressed in colon cancer patient tissues and that reduced MISP expression inhibited cell proliferation. Notably, MISP-deficient mice showed reduced colon tumor formation in the AOM/DSS-induced colitis model. Furthermore, MISP was found to form a complex with Opa interacting protein 5 (OIP5) in the cytoplasm, influencing the expression of OIP5 in a unidirectional manner. We also observed that MISP increased the levels of phosphorylated STAT3 in the JAK2-STAT3 signaling pathway, which is linked to tumorigenesis. These findings indicate that MISP could be a risk factor for CRC, and targeting MISP might provide insights into the mechanisms of colitis-induced colorectal tumorigenesis.


Asunto(s)
Colitis , Neoplasias Colorrectales , Animales , Humanos , Ratones , Azoximetano/efectos adversos , Carcinogénesis , Transformación Celular Neoplásica , Colitis/patología , Neoplasias Colorrectales/patología , Sulfato de Dextran/efectos adversos , Modelos Animales de Enfermedad , Janus Quinasa 2/metabolismo , Ratones Endogámicos C57BL , Transducción de Señal , Huso Acromático/metabolismo , Factor de Transcripción STAT3/metabolismo
4.
Int Immunopharmacol ; 124(Pt A): 110848, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37633233

RESUMEN

BACKGROUND: Hepatocellular carcinoma (HCC) is a prevailing cancer affecting human health. M2 macrophages are essential in mediating immune responses in tumors. This study investigated the action of M2 macrophages in immune escape of HCC. METHODS: Mitotic spindle positioning (MISP), IQ motif containing GTPase activating protein 1 (IQGAP1) and programmed cell death-1 (PD-L1) levels in primary HCC/tumor-adjacent tissues were determined by Western blot, followed by correlation analysis. M2 macrophage and CD3+CD8+T cell percentages were estimated by flow cytometry. Hep3B and HepG2 cells were treated with M2 macrophage conditioned medium (M2-CM) and M2 macrophage-derived extracellular vesicles (M2-EVs) and/or co-cultured with CD8+T cells, followed by assessment of cell viability and apoptosis. TNF-α and INF-γ levels were measured by ELISA. MISP and IQGAP1 overexpression plasmids were transfected into HCC cells to explore their role in immune escape. The interactions among MISP, IQGAP1, STAT3, and PD-L1 were analyzed by co-immunoprecipitation. The mechanism of M2-EVs in HCC immune escape was verified in nude mice. RESULTS: MISP/IQGAP1/PD-L1 were upregulated in HCC tissues. MISP negatively-correlated with IQGAP1/PD-L1 and IQGAP1 positively-correlated with PD-L1. M2 macrophages were reduced but CD8+T cells were increased in HCC tissues with high MISP expression. M2-CM or M2-EVs inhibited the killing ability of CD8+T cells, increased HCC cell viability, impeded HCC cell apoptosis, induced CD8+T cell apoptosis, downregulated TNF-α and INF-γ, and upregulated PD-L1. M2-EVs facilitated HCC cell immune escape by potentiating IQGAP1 nuclear translocation and activating STAT3 phosphorylation through MISP downregulation. In vivo experiments further verified the action of M2-EVs through MISP. CONCLUSION: M2-EVs promote HCC cell immune escape by upregulating PD-L1 through the MISP/IQGAP1/STAT3 axis.

5.
Front Glob Womens Health ; 4: 1238526, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37600522

RESUMEN

Pakistan's recent floods have worsened women's and girls' menstrual hygiene problems, compromising their health, dignity, and well-being. Supply chain issues, poor facilities, and cultural stigma limit menstrual products and hygiene management. Gender-sensitive disaster management and menstrual health education programmes can help. The Minimum Initial Service Package (MISP) can provide emergency reproductive health services. Involving men, working with religious leaders, and pre-disaster planning for menstrual hygiene management can help break the taboo and increase access to resources. Meeting ongoing needs requires timely menstrual hygiene product distribution, restocking, and renewal. By addressing these issues, Pakistan can empower post-flood women and girls through economic opportunities and legal protection.

6.
Front Bioeng Biotechnol ; 11: 1109265, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36741750

RESUMEN

With societal development, the growing scale of engineering construction, and the increase in environmental protection requirements, the necessity of engineering waste mud disposal is becoming increasingly prominent. In this study, microbially induced struvite precipitation (MISP) was introduced to treat engineering waste mud. The study mainly focused on: i) the optimal mineralization scheme for microbially induced struvite precipitation, ii) the feasibility of the process and the effect of reaction parameters on treating engineering waste mud with microbially induced struvite precipitation, and iii) the mechanism of microbially induced struvite precipitation in treating engineering waste mud. The results showed that the waste mud could be well treated with 8.36 × 10 6   c e l l ⋅ m L - 1 bacteria, 10 mM urea, 20 mM phosphate buffer, and 25 mM M g C l 2 at pH 7. The kaolin suspension could be effectively flocculated. The flocculation rate reached approximately 87.2% under the optimum mineralization conditions. The flocculation effect was mainly affected by the concentrations of reactants and heavy metals and the suspension pH. The X-ray diffraction (XRD) patterns showed a strong struvite (MAP) diffraction peak. Scanning electron microscopy (SEM) images indicated that under the optimal mineralization conditions, the crystals were large and showed prismatic shapes tilted at both ends with adhered kaolin particles. In summary, this manuscript provides an effective way to treat engineering waste mud, and the findings should have a positive effect on enhancing soil fertility and preventing secondary pollution.

7.
J Environ Manage ; 316: 115280, 2022 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-35588665

RESUMEN

Microbial-induced struvite precipitation (MISP) is a new biocementation method for soil improvement and hydraulic permeability reduction. Compared with traditional microbial-induced carbonate precipitation (MICP), MISP can significantly reduce the production of harmful ammonium ions during biochemical reactions and convert ammonium ions into struvite with promising mechanical strength. In this study, a series of experiments were conducted to compare the performance of the MICP and the MISP processes on sandy soils. Results showed that the average content of calcium carbonate in MISP cemented sand columns after 3 times of injection is similar to that in MICP cemented sand columns after 9 times of injection. The hydraulic permeability of MISP cemented sand columns after 3 times of injection is an order of magnitude lower than that of MICP cemented sand columns after 9 times of injection. To further investigate the physicochemical interactions during MISP and MICP processes, a one-dimensional finite element code considering the chemical reactions and the solute transportation was proposed. Results show that most of the MISP were formed in the early 3 h of the 6 h injection cycle, whereas most of the MICP were formed in the last 5 h of the injection cycle. The simulated total mass of the MISP precipitation, 11.3 g, was close to the experimental result of 9.6 g. The spatial distribution of MISP is more uneven as compared to MICP, as a result of the much faster reaction rate of struvite than calcium carbonate. The findings suggested that MISP could partially replace MICP in the applications of leakage mitigation and reinforcement of sandy soils.


Asunto(s)
Compuestos de Amonio , Suelo , Carbonato de Calcio/química , Carbonatos , Precipitación Química , Arena , Suelo/química , Estruvita
8.
Front Oncol ; 12: 827051, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35433491

RESUMEN

Background: Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant disease with a poor prognosis. More effective biomarkers and treatment options remain to be discovered. Mitotic Spindle Positioning (MISP), also called C19orf21, has been reported to be upregulated in several malignancies. However, the effects of MISP on PDAC have yet to be investigated. Materials and Methods: The differential expression of MISP at the mRNA and protein levels were evaluated using Gene Expression Profiling Interactive Analysis 2 (GEPIA 2), Gene Expression Omnibus (GEO), and the Human Protein Atlas (HPA) databases, and was further verified by quantitative real-time PCR and western blotting in PDAC cell lines. Correlations between MISP expression and clinical characteristics were explored using Kaplan-Meier Plotter Database and clinical data from The Cancer Genome Atlas (TCGA). CCK-8 assays, Transwell assays, and immunoblotting were used to determine the role of MISP in PDAC proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) in vitro. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were executed by the R package 'clusterProfiler'. Correlations between MISP expression and immune cell infiltration, immune checkpoints, immunophenoscore (IPS) and the tumor mutational burden (TMB) in PDAC were explored using the R package 'CIBERSORT', the Tumor Immune Estimation Resource 2.0 (TIMER2.0), and The Cancer Immunome Atlas (TCIA) database based on TCGA data. Result: MISP expression was significantly higher in pancreatic cancer tissues compared to normal pancreas tissues, which was associated with a poor prognosis. Increased expression of MISP was related to the proliferation, migration and invasion of PDAC cell lines. GO and KEGG pathway analyses determined that MISP is involved in the Ras signaling pathway and immune regulation. Higher expression of MISP was associated with decreased infiltration levels of activated CD4+ memory T cells, CD8+ T cells, M2 macrophages and neutrophils. Furthermore, increased MISP was associated with lower expression of immune checkpoint molecules, higher gene mutation burden and IPS. Conclusions: This study reveals that MISP, which is associated with the progression and prognosis of PDAC, may exert a potential regulatory effect on immune infiltration and predict the response to immunotherapy in PDAC.

9.
Environ Sci Pollut Res Int ; 29(8): 11219-11231, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34528205

RESUMEN

The microbial induced mineral precipitation can be used to modify and improve the performance of construction materials and can partially replace ordinary Portland cement. Microbially induced carbonate precipitation (MICP) mainly uses the urease secreted during the growth of urease-producing bacteria (UPB) to hydrolyze urea produce CO32- and reacts with Ca2+ to form CaCO3. Microbially induced struvite precipitation (MISP) mainly uses the urease to decompose urea to produce NH4+. In the presence of hydrogen phosphate and magnesium ions, the struvite can be precipitated. The elemental composition and chemical composition of the precipitates produced by the MICP and MISP processes are analyzed by energy dispersive X-ray spectroscopy (EDS) and powder X-ray diffraction analysis (XRD). The morphology of the precipitates can be observed by scanning electron microscope (SEM). Compared with the initial porosity, the MICP method can reduce the initial porosity of the sand column by 2.98% within 90 min. However, the MISP is only 1.45%. The permeability coefficient of the sand column can be effectively reduced in the MICP process. The total content of cementitious materials is 27.71g and 13.16g in MICP- and MISP-cemented sand columns, respectively. The MICP technology can improve the strength of alkali-activated mortars under different pH values of the UPB solution.


Asunto(s)
Carbonato de Calcio , Materiales de Construcción , Carbonatos , Precipitación Química , Arena , Ureasa
10.
Biochem Biophys Res Commun ; 561: 128-135, 2021 07 05.
Artículo en Inglés | MEDLINE | ID: mdl-34023777

RESUMEN

The actin cytoskeleton plays critical roles in numerous cellular events and functions, and its spatiotemporal dynamics are maintained and regulated by several actin cofactor proteins. MISP/Caprice is a recently reported actin-bundling protein that is also involved in the progression of mitosis. In this study, we investigated how the actin-regulatory function of MISP is modulated by phosphorylation. A series of mutation studies demonstrated that phosphorylation of S394, S395, and S400 induced stress fiber formation in interphase cells. In vitro studies revealed that these phosphorylation events increased the actin-bundling activity but not the actin-binding activity of MISP. Moreover, actin-binding activity was suppressed by mitotic phosphorylation, including that at S376, S471, and S541. These results indicate that phosphorylation during interphase and mitosis differentially regulates the actin-binding and -bundling activities of MISP, in turn regulating the higher-order architecture of the actin cytoskeleton during cell cycle.


Asunto(s)
Citoesqueleto de Actina/metabolismo , Actinas/metabolismo , Proteínas de Ciclo Celular/metabolismo , Proteínas de Microfilamentos/metabolismo , Fosfoproteínas/metabolismo , Huso Acromático/metabolismo , Ciclo Celular/fisiología , Células Cultivadas , Humanos , Mitosis/fisiología , Fosforilación , Unión Proteica , Proteínas Recombinantes/aislamiento & purificación
11.
Confl Health ; 15(1): 22, 2021 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-33827633

RESUMEN

Recent crises have accelerated global interest in self-care interventions. This debate paper aims to raise the issue of sexual and reproductive health (SRH) self-care and invites members of the global community operating in crisis-affected settings to look at potential avenues in mainstreaming SRH self-care interventions. We start by exploring self-care interventions that could align with well-established humanitarian standards, such as the Minimum Initial Service Package (MISP) for Sexual and Reproductive Health in Crises, point to the potential of digital health support for SRH self-care in crisis-affected settings, and discuss related policy, programmatic, and research considerations. These considerations underscore the importance of self-care as part of the care continuum and within a whole-system approach. Equally critical is the need for self-care in crisis-affected settings to complement other live-saving SRH interventions-it does not eliminate the need for provider-led services in health facilities. Further research on SRH self-care interventions focusing distinctively on humanitarian and fragile settings is needed to inform context-specific policies and practice guidance.

12.
Reprod Health ; 18(1): 58, 2021 Mar 08.
Artículo en Inglés | MEDLINE | ID: mdl-33685476

RESUMEN

BACKGROUND: Women and girls are disproportionately affected in times of conflict and forced displacement, with disturbance in access to healthcare services leading to poor sexual and reproductive health outcomes. The minimal initial service package (MISP) was created to mitigate the consequences of conflict and prevent poor sexual and reproductive health (SRH) outcomes, especially among women and girls. The aim of this narrative review was to explore the SRH response for Syrian refugee women and girls in Lebanon, with a focus on MISP implementation. METHODOLOGY: A comprehensive literature search was conducted for peer-reviewed articles in 8 electronic databases and multiple grey literature sites for articles published from March 2011 to May 2019. The target population was Syrian refugee women in Lebanon displaced from Syria as a result of the conflict that erupted in March 2011. The selected articles addressed MISP, SRH needs and services, and barriers to service access. A narrative synthesis was conducted, guided by the six main objectives of the MISP. RESULTS: A total of 254 documents were retrieved, from which 12 peer-reviewed articles and 12 reports were included in the review. All identified articles were descriptive in nature and no studies evaluating MISP or other interventions or programs were found. The articles described the wide range of SRH services delivered in Lebanon to Syrian refugee women. However, access to and quality of these services remain a challenge. Multiple sources reported a lack of coordination, leading to fragmented service provision and duplication of effort. Studies reported a high level of sexual and gender-based violence, pregnancy complications and poor antenatal care compliance, and limited use of contraceptive methods. Very few studies reported on the prevalence of HIV and other STIs, reporting low levels of infection. Multiple barriers to healthcare access were identified, which included system-level, financial, informational and cultural factors, healthcare workers. CONCLUSION: This study highlights the main SRH services provided, their use and access by Syrian refugee women in Lebanon. Despite the multitude of services provided, the humanitarian response remains decentralized with limited coordination and multiple barriers that limit the utilization of these services. A clear gap remains, with limited evaluation of SRH services that are pertinent to achieve the MISP objectives and the ability to transition into comprehensive services. Improving the coordination of services through a lead agency can address many of the identified barriers and allow the transition into comprehensive services.


Asunto(s)
Refugiados/psicología , Servicios de Salud Reproductiva , Salud Reproductiva , Adolescente , Niño , Atención a la Salud , Femenino , Humanos , Recién Nacido , Líbano , Masculino , Embarazo , Conducta Sexual , Siria
13.
Confl Health ; 14: 81, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33250933

RESUMEN

BACKGROUND: Planning to transition from the Minimum Initial Service Package for Sexual and Reproductive Health (SRH) toward comprehensive SRH services has been a challenge in humanitarian settings. To bridge this gap, a workshop toolkit for SRH coordinators was designed to support effective planning. This article aims to describe the toolkit design, piloting, and final product. METHODS: Anchored in the Health System Building Blocks Framework of the World Health Organization, the design entailed two complementary and participatory strategies. First, a collaborative design phase with iterative feedback loops involved global partners with extensive operational experience in the initial toolkit conception. The second phase engaged stakeholders from three major humanitarian crises to participate in pilot workshops to contextualize, evaluate, validate, and improve the toolkit using qualitative interviews and end-of-workshop evaluations. The aim of this two-phase design process was to finalize a planning toolkit that can be utilized in and adapted to diverse humanitarian contexts, and efficiently and effectively meet its objectives. Pilots occurred in the Democratic Republic of Congo for the Kasai region crisis, Bangladesh for the Rohingya humanitarian response in Cox's Bazar, and Yemen for selected Governorates. RESULTS: Results suggest that the toolkit enabled facilitators to foster a systematic, participatory, interactive, and inclusive planning process among participants over a two-day workshop. The approach was reportedly effective and time-efficient in producing a joint work plan. The main planning priorities cutting across settings included improving comprehensive SRH services in general, healthcare workforce strengthening, such as midwifery capacity development, increasing community mobilization and engagement, focusing on adolescent SRH, and enhancing maternal and newborn health services in terms of quality, coverage, and referral pathways. Recommendations for improvement included a dedicated and adequately anticipated pre-workshop preparation to gather relevant data, encouraging participants to undertake preliminary study to equalize knowledge to partake fully in the workshop, and enlisting participants from marginalized and underserved populations. CONCLUSION: Collaborative design and piloting efforts resulted in a workshop toolkit that could support a systematic and efficient identification of priority activities and services related to comprehensive SRH. Such priorities could help meet the SRH needs of communities emerging from acute humanitarian situations while strengthening the overall health system.

14.
Confl Health ; 12: 35, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30127844

RESUMEN

BACKGROUND: Following the Nepal earthquake in April 2015, UNFPA estimated that 1.4 million women of reproductive age were affected, with approximately 93,000 pregnant and 28,000 at risk of sexual violence. A set of priority reproductive health (RH) actions, the Minimum Initial Services Package (MISP), was initiated by government, international and local actors. The purpose of this study was to identify the facilitators and barriers affecting the implementation of priority RH services in two districts. METHODS: In September 2015, a mixed methods study design was used in Kathmandu and Sindhupalchowk districts to assess the implementation of the priority RH services five months post-earthquake. Data collection activities included 32 focus group discussions with male and female participants aged 18-49; 26 key informant interviews with RH, gender-based violence (GBV), and human immunodeficiency virus (HIV) experts; and 17 health facility assessments. RESULTS: The implementation of priority RH services was achieved in both districts. In Kathmandu implementation of emergency RH services started within days of the earthquake. Facilitating factors for successful implementation included disaster preparedness; leadership and commitment among national, international, and district level actors; resource mobilization; strong national level coordination; existing reproductive and child health services and community outreach programs; and supply chain management. Barriers included inadequate MISP training for RH coordinators and managers; weak communication between national and district level stakeholders; inadequate staffing; under-resourced and fewer facilities in rural areas; limited attention given to local GBV and HIV organizations; low availability of clinical management of rape services; and low awareness of GBV services and benefits of timely care. CONCLUSION: Ensuring RH is included in emergency preparedness and immediate response efforts and is continued through the transition to comprehensive care is critical for national governments and humanitarian response agencies. The MISP for RH remains a critical component of response efforts, and the humanitarian community should consider these learnings in future emergency response.

15.
J Cell Sci ; 131(10)2018 05 21.
Artículo en Inglés | MEDLINE | ID: mdl-29669740

RESUMEN

Correct spindle orientation is achieved through signaling pathways that provide a molecular link between the cell cortex and spindle microtubules in an F-actin-dependent manner. A conserved cortical protein complex, composed of LGN (also known as GPSM2), NuMA (also known as NUMA1) and dynein-dynactin, plays a key role in establishing proper spindle orientation. It has also been shown that the actin-binding protein MISP and the ERM family, which are activated by lymphocyte-oriented kinase (LOK, also known as STK10) and Ste20-like kinase (SLK) (hereafter, SLK/LOK) in mitosis, regulate spindle orientation. Here, we report that MISP functions downstream of the ERM family member ezrin and upstream of NuMA to allow optimal spindle positioning. We show that MISP directly interacts with ezrin and that SLK/LOK-activated ezrin ensures appropriate cortical MISP levels in mitosis by competing with MISP for actin-binding sites at the cell cortex. Furthermore, we found that regulation of the correct cortical MISP levels, by preventing its excessive accumulation, is essential for crescent-like polarized NuMA localization at the cortex and, as a consequence, leads to highly dynamic astral microtubules. Our results uncover how appropriate MISP levels at the cortex are required for proper NuMA polarization and, therefore, an optimal placement of the mitotic spindle within the cell.This article has an associated First Person interview with the first author of the paper.


Asunto(s)
Antígenos Nucleares/metabolismo , Proteínas de Ciclo Celular/metabolismo , Proteínas del Citoesqueleto/metabolismo , Proteínas de Microfilamentos/metabolismo , Proteínas Asociadas a Matriz Nuclear/metabolismo , Fosfoproteínas/metabolismo , Huso Acromático/metabolismo , Actinas/genética , Actinas/metabolismo , Antígenos Nucleares/genética , Proteínas de Ciclo Celular/genética , Proteínas del Citoesqueleto/genética , Complejo Dinactina/genética , Complejo Dinactina/metabolismo , Dineínas/genética , Dineínas/metabolismo , Células HeLa , Humanos , Proteínas de Microfilamentos/genética , Proteínas Asociadas a Matriz Nuclear/genética , Fosfoproteínas/genética , Unión Proteica , Huso Acromático/química , Huso Acromático/genética
16.
Reprod Health Matters ; 25(51): 7-17, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29233076

RESUMEN

The Minimum Initial Services Package (MISP) for reproductive health has been the minimum standard for reproductive health service provision in humanitarian emergencies since 1995. Assessments of acute humanitarian settings in 2004 and 2005 revealed few MISP services in place and low knowledge of the MISP among humanitarian responders. Just 10 years later, assessments of humanitarian settings in 2013 and 2015 found largely consistent availability of MISP services and high awareness of the MISP as a standard among responders. We describe the multi-pronged strategy undertaken by the Women's Refugee Commission and other Inter-agency Working Group on Reproductive Health in Crises (IAWG) member agencies to effect systemic improvements in the availability of the MISP at the onset of humanitarian responses. We find that investments in fact-finding missions, awareness-raising, capacity development, policy harmonisation, targeted funding, emergency risk management, and community resilience-building have been critical to facilitating a sea-change in reproductive health responses in acute, large-scale emergencies. Efforts were underpinned by collaborative, inter-agency partnerships in which organisations were committed to working together to achieve shared goals. The strategies, activities, and achievements contain valuable lessons for the health sector, including reproductive health, and other sectors seeking to better integrate emerging or marginalised issues into humanitarian action.


Asunto(s)
Refugiados , Sistemas de Socorro/organización & administración , Servicios de Salud Reproductiva/organización & administración , Concienciación , Creación de Capacidad , Femenino , Humanos , Internacionalidad , Conocimiento , Políticas , Sistemas de Socorro/economía , Servicios de Salud Reproductiva/economía , Servicios de Salud Reproductiva/provisión & distribución , Salud de la Mujer
17.
Rev Epidemiol Sante Publique ; 65 Suppl 4: S220-S225, 2017 Oct.
Artículo en Francés | MEDLINE | ID: mdl-28372834

RESUMEN

BACKGROUND: Data from the French medical information system program in medicine, surgery, obstetrics and dentistry can be adapted in some cases and under certain conditions, to account for hospitalizations for injuries. Two areas have been explored: burn and traumatic brain injury victims. METHODS: An algorithm selecting data from the Medical information system program was established and implemented for several years for the study of burn victims. The methods of selection of stays for traumatic brain injuries, which are the subject of a more recent exploration, are described. RESULTS: Production of results in routine on the hospitalization for burns. Expected production of results on the hospitalization for traumatic brain injuries. CONCLUSION: In both cases, the knowledge obtained from these utilizations of the Medical information system program contributes to epidemiological surveillance and prevention and are useful for health care organization.


Asunto(s)
Lesiones Traumáticas del Encéfalo/epidemiología , Quemaduras/epidemiología , Recolección de Datos/métodos , Hospitalización/estadística & datos numéricos , Almacenamiento y Recuperación de la Información/métodos , Sistemas de Registros Médicos Computarizados/estadística & datos numéricos , Algoritmos , Lesiones Traumáticas del Encéfalo/terapia , Quemaduras/terapia , Francia/epidemiología , Humanos , Almacenamiento y Recuperación de la Información/normas , Vigilancia de la Población , Literatura de Revisión como Asunto
18.
Front Plant Sci ; 7: 964, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27446188

RESUMEN

Secreted effectors in plant root-knot nematodes (RKNs, or Meloidogyne spp.) play key roles in their parasite processes. Currently identified effectors mainly focus on the early stage of the nematode parasitism. There are only a few reports describing effectors that function in the latter stage. In this study, we identified a potential RKN effector gene, Misp12, that functioned during the latter stage of parasitism. Misp12 was unique in the Meloidogyne spp., and highly conserved in Meloidogyne incognita. It encoded a secretory protein that specifically expressed in the dorsal esophageal gland, and highly up-regulated during the female stages. Transient expression of Misp12-GUS-GFP in onion epidermal cell showed that Misp12 was localized in cytoplast. In addition, in planta RNA interference targeting Misp12 suppressed the expression of Misp12 in nematodes and attenuated parasitic ability of M. incognita. Furthermore, up-regulation of jasmonic acid (JA) and salicylic acid (SA) pathway defense-related genes in the virus-induced silencing of Misp12 plants, and down-regulation of SA pathway defense-related genes in Misp12-expressing plants indicated the gene might be associated with the suppression of the plant defense response. These results demonstrated that the novel nematode effector Misp12 played a critical role at latter parasitism of M. incognita.

19.
Rev. ADM ; 73(3): 155-162, mayo-jun.2016. ilus
Artículo en Español | LILACS | ID: lil-795809

RESUMEN

Parte sustancial de la mejora de la calidad asistencial está en garantizarla seguridad de los pacientes, evitando en lo posible los incidentes imprevistos durante la estancia hospitalaria derivados de la asistencia sanitaria y no de la enfermedad del paciente. El presente trabajo tiene el objetivo de describir las metas internacionales de la seguridad del paciente en el ámbito de la estomatología. Aunque dichas metas fueron diseñadas originalmente para el ámbito hospitalario, reflexionandosobre cada una de ellas, se puede distinguir que todas son adaptables alentorno de la práctica estomatológica e identificar el momento propicio en que aplican. La seguridad del paciente es además una obligación ética que mejora la seguridad legal de los estomatólogos y disminuye las reclamaciones...


Asunto(s)
Humanos , Adulto , Niño , Daño del Paciente/prevención & control , Errores Médicos/prevención & control , Seguridad del Paciente/legislación & jurisprudencia , Seguridad del Paciente/normas , Calidad de la Atención de Salud/normas , Enfermedad Iatrogénica , Legislación en Odontología , Responsabilidad Legal , Mala Praxis
20.
Confl Health ; 9(Suppl 1 Taking Stock of Reproductive Health in Humanitarian): S4, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25798190

RESUMEN

BACKGROUND: The Minimum Initial Services Package (MISP) for reproductive health, a standard of care in humanitarian emergencies, is a coordinated set of priority activities developed to prevent excess morbidity and mortality, particularly among women and girls, which should be implemented at the onset of an emergency. The purpose of the evaluation was to determine the status of MISP implementation for Syrian refugees in Jordan as part of a global evaluation of reproductive health in crises. METHODS: In March 2013, applying a formative evaluation approach 11 key informant interviews, 13 health facility assessments, and focus group discussions (14 groups; 159 participants) were conducted in two Syrian refugee sites in Jordan, Zaatri Camp, and Irbid City, respectively. Information was coded, themes were identified, and relationships between data explored. RESULTS: Lead health agencies addressed the MISP by securing funding and supplies and establishing reproductive health focal points, services and coordination mechanisms. However, Irbid City was less likely to be included in coordination activities and health facilities reported challenges in human resource capacity. Access to clinical management of rape survivors was limited, and both women and service provider's knowledge about availability of these services was low. Activities to reduce the transmission of HIV and to prevent excess maternal and newborn morbidity and mortality were available, although some interventions needed strengthening. Some planning for comprehensive reproductive health services, including health indicator collection, was delayed. Contraceptives were available to meet demand. Syndromic treatment of sexually transmitted infections and antiretrovirals for continuing users were not available. In general refugee women and adolescent girls perceived clinical services negatively and complained about the lack of basic necessities. CONCLUSIONS: MISP services and key elements to support implementation were largely in place. Pre-existing Jordanian health infrastructure, prior MISP trainings, dedicated leadership and available funding and supplies facilitated MISP implementation. The lack of a national protocol on clinical management of rape survivors hindered provision of these services, while communities' lack of information about the health benefits of the services as well as perceived cultural repercussions likely contributed to no recent service uptake from survivors. This information can inform MISP programming in this setting.

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