285 research outputs found
РОЛЬ ТРУДОВЫХ РЕСУРСОВ В РАЗВИТИИ ЭКОНОМИКИ БАХРЕЙНА
The article analyzes the experience of the development of labor resources in the Kingdom of Bahrain. The country is a member of the Cooperation Council for the Arab States of the Persian Gulf (GCC), which are characterized by high dependence on labor migrants, a large number of young people under 25 years old, and a low share of women's involvement in economic processes. Nevertheless, the experience of Bahrain is characterized by a unique approach to improving the quality of human capital. The multi-level principle of interaction between the state, society and business is embodied in the creation of the Tamkeen company, whose main goal is the development of national labor resources.El artículo analiza la experiencia del desarrollo de recursos laborales en el Reino de Bahrein. El país es miembro del Consejo de Cooperación para los Estados Árabes del Golfo Pérsico (CCG), que se caracteriza por una alta dependencia de trabajadores migrantes, un gran número de jóvenes menores de 25 años y una baja participación de las mujeres en Procesos economicos. Sin embargo, la experiencia de Bahrein se caracteriza por un enfoque único para mejorar la calidad del capital humano. El principio de interacción de varios niveles entre el estado, la sociedad y las empresas se materializa en la creación de la empresa Tamkeen, cuyo objetivo principal es el desarrollo de los recursos laborales nacionaleВ статье анализируется опыт развития трудовых ресурсов Королевства Бахрейн. Страна является членом Совета сотрудничества арабских государств Персидского залива (ССАГПЗ), который характеризуется высокой зависимостью от трудовых мигрантов, большим числом молодых людей в возрасте до 25 лет и низкой долей участия женщин в экономических процессах. Тем не менее, опыт Бахрейна характеризуется уникальным подходом к повышению качества человеческого капитала. Многоуровневый принцип взаимодействия государства, общества и бизнеса воплощен в создании компании "Тамкин", основной целью которой является развитие национальных трудовых ресурсов
Hot Electrons, Hot Holes, or Both? Tandem Synthesis of Imines Driven by the Plasmonic Excitation in Au/CeO2 Nanorods
Solar-to-chemical conversion via photocatalysis is of paramount importance for a sustainable future. Thus, investigating the synergistic effects promoted by light in photocatalytic reactions is crucial. The tandem oxidative coupling of alcohols and amines is an attractive route to synthesize imines. Here, we unravel the performance and underlying reaction pathway in the visible-light-driven tandem oxidative coupling of benzyl alcohol and aniline employing Au/CeO2 nanorods as catalysts. We propose an alternative reaction pathway for this transformation that leads to improved efficiencies relative to individual CeO2 nanorods, in which the localized surface plasmon resonance (LSPR) excitation in Au nanoparticles (NPs) plays an important role. Our data suggests a synergism between the hot electrons and holes generated from the LSPR excitation in Au NPs. While the oxygen vacancies in CeO2 nanorods trap the hot electrons and facilitate their transfer to adsorbed O2 at surface vacancy sites, the hot holes in the Au NPs facilitate the α-H abstraction from the adsorbed benzyl alcohol, evolving into benzaldehyde, which then couples with aniline in the next step to yield the corresponding imine. Finally, cerium-coordinated superoxide species abstract hydrogen from the Au surface, regenerating the catalyst surface
Hot Electrons, Hot Holes, or Both? Tandem Synthesis of Imines Driven by the Plasmonic Excitation in Au/CeO(2)Nanorods
Solar-to-chemical conversion via photocatalysis is of paramount importance for a sustainable future. Thus, investigating the synergistic effects promoted by light in photocatalytic reactions is crucial. The tandem oxidative coupling of alcohols and amines is an attractive route to synthesize imines. Here, we unravel the performance and underlying reaction pathway in the visible-light-driven tandem oxidative coupling of benzyl alcohol and aniline employing Au/CeO(2)nanorods as catalysts. We propose an alternative reaction pathway for this transformation that leads to improved efficiencies relative to individual CeO(2)nanorods, in which the localized surface plasmon resonance (LSPR) excitation in Au nanoparticles (NPs) plays an important role. Our data suggests a synergism between the hot electrons and holes generated from the LSPR excitation in Au NPs. While the oxygen vacancies in CeO(2)nanorods trap the hot electrons and facilitate their transfer to adsorbed O(2)at surface vacancy sites, the hot holes in the Au NPs facilitate the alpha-H abstraction from the adsorbed benzyl alcohol, evolving into benzaldehyde, which then couples with aniline in the next step to yield the corresponding imine. Finally, cerium-coordinated superoxide species abstract hydrogen from the Au surface, regenerating the catalyst surface.Peer reviewe
HGF Mediates the Anti-inflammatory Effects of PRP on Injured Tendons
Platelet-rich plasma (PRP) containing hepatocyte growth factor (HGF) and other growth factors are widely used in orthopaedic/sports medicine to repair injured tendons. While PRP treatment is reported to decrease pain in patients with tendon injury, the mechanism of this effect is not clear. Tendon pain is often associated with tendon inflammation, and HGF is known to protect tissues from inflammatory damages. Therefore, we hypothesized that HGF in PRP causes the anti-inflammatory effects. To test this hypothesis, we performed in vitro experiments on rabbit tendon cells and in vivo experiments on a mouse Achilles tendon injury model. We found that addition of PRP or HGF decreased gene expression of COX-1, COX-2, and mPGES-1, induced by the treatment of tendon cells in vitro with IL-1β. Further, the treatment of tendon cell cultures with HGF antibodies reduced the suppressive effects of PRP or HGF on IL-1β-induced COX-1, COX-2, and mPGES-1 gene expressions. Treatment with PRP or HGF almost completely blocked the cellular production of PGE2 and the expression of COX proteins. Finally, injection of PRP or HGF into wounded mouse Achilles tendons in vivo decreased PGE2 production in the tendinous tissues. Injection of platelet-poor plasma (PPP) however, did not reduce PGE2 levels in the wounded tendons, but the injection of HGF antibody inhibited the effects of PRP and HGF. Further, injection of PRP or HGF also decreased COX-1 and COX-2 proteins. These results indicate that PRP exerts anti-inflammatory effects on injured tendons through HGF. This study provides basic scientific evidence to support the use of PRP to treat injured tendons because PRP can reduce inflammation and thereby reduce the associated pain caused by high levels of PGE2. © 2013 Zhang et al
Global characteristics and outcomes of SARS-CoV-2 infection in children and adolescents with cancer (GRCCC): a cohort study
BACKGROUND: Previous studies have shown that children and adolescents with COVID-19 generally have mild disease. Children and adolescents with cancer, however, can have severe disease when infected with respiratory viruses. In this study, we aimed to understand the clinical course and outcomes of SARS-CoV-2 infection in children and adolescents with cancer. METHODS: We did a cohort study with data from 131 institutions in 45 countries. We created the Global Registry of COVID-19 in Childhood Cancer to capture de-identified data pertaining to laboratory-confirmed SARS-CoV-2 infections in children and adolescents (<19 years) with cancer or having received a haematopoietic stem-cell transplantation. There were no centre-specific exclusion criteria. The registry was disseminated through professional networks through email and conferences and health-care providers were invited to submit all qualifying cases. Data for demographics, oncological diagnosis, clinical course, and cancer therapy details were collected. Primary outcomes were disease severity and modification to cancer-directed therapy. The registry remains open to data collection. FINDINGS: Of 1520 submitted episodes, 1500 patients were included in the study between April 15, 2020, and Feb 1, 2021. 1319 patients had complete 30-day follow-up. 259 (19·9%) of 1301 patients had a severe or critical infection, and 50 (3·8%) of 1319 died with the cause attributed to COVID-19 infection. Modifications to cancer-directed therapy occurred in 609 (55·8%) of 1092 patients receiving active oncological treatment. Multivariable analysis revealed several factors associated with severe or critical illness, including World Bank low-income or lower-middle-income (odds ratio [OR] 5·8 [95% CI 3·8-8·8]; p<0·0001) and upper-middle-income (1·6 [1·2-2·2]; p=0·0024) country status; age 15-18 years (1·6 [1·1-2·2]; p=0·013); absolute lymphocyte count of 300 or less cells per mm3 (2·5 [1·8-3·4]; p<0·0001), absolute neutrophil count of 500 or less cells per mm3 (1·8 [1·3-2·4]; p=0·0001), and intensive treatment (1·8 [1·3-2·3]; p=0·0005). Factors associated with treatment modification included upper-middle-income country status (OR 0·5 [95% CI 0·3-0·7]; p=0·0004), primary diagnosis of other haematological malignancies (0·5 [0·3-0·8]; p=0·0088), the presence of one of more COVID-19 symptoms at the time of presentation (1·8 [1·3-2·4]; p=0·0002), and the presence of one or more comorbidities (1·6 [1·1-2·3]; p=0·020). INTERPRETATION: In this global cohort of children and adolescents with cancer and COVID-19, severe and critical illness occurred in one fifth of patients and deaths occurred in a higher proportion than is reported in the literature in the general paediatric population. Additionally, we found that variables associated with treatment modification were not the same as those associated with greater disease severity. These data could inform clinical practice guidelines and raise awareness globally that children and adolescents with cancer are at high-risk of developing severe COVID-19 illness. FUNDING: American Lebanese Syrian Associated Charities and the National Cancer Institute
The Global COVID-19 Observatory and Resource Center for Childhood Cancer: A response for the pediatric oncology community by SIOP and St. Jude Global
The COVID-19 pandemic quickly led to an abundance of publications and recommendations, despite a paucity of information on how COVID-19 affects children with cancer. This created a dire need for a trusted resource with curated information and a space for the pediatric oncology community to share experiences. The Global COVID-19 Observatory and Resource Center for Childhood Cancer was developed, launched, and maintained by the International Society of Pediatric Oncology and St. Jude Children's Research Hospital. The three components (Resource Library, Global Registry, and Collaboration Space) complement each other, establishing a mechanism to generate and transfer knowledge rapidly throughout the community.Fil: Moreira, Daniel C.. St. Jude Children's Research Hospital; Estados UnidosFil: Sniderman, Elizabeth. St. Jude Children's Research Hospital; Estados UnidosFil: Mukkada, Sheena. St. Jude Children's Research Hospital; Estados UnidosFil: Chantada, Guillermo Luis. Universidad Austral. Facultad de Ciencias Biomédicas. Instituto de Investigaciones en Medicina Traslacional. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Medicina Traslacional; ArgentinaFil: Bhakta, Nickhill. St. Jude Children's Research Hospital; Estados UnidosFil: Foster, Whitney. St. Jude Children's Research Hospital; Estados UnidosFil: Avula, Meghana. St. Jude Children's Research Hospital; Estados UnidosFil: Homsi, Maysam R.. St. Jude Children's Research Hospital; Estados UnidosFil: Faughnan, Lane. St. Jude Children's Research Hospital; Estados UnidosFil: Happ, Brooke. St. Jude Children's Research Hospital; Estados UnidosFil: Andujar, Allyson. St. Jude Children's Research Hospital; Estados UnidosFil: Sonnenfelt, Jason. St. Jude Children's Research Hospital; Estados UnidosFil: Dalvi, Rashmi. Bombay Hospital And Medical Research Centre; IndiaFil: Frazier, A. Lindsay. No especifíca;Fil: Hessissen, Laila. Universite Mohammed V. Rabat; Otros paises de ÁfricaFil: Kearns, Pamela R.. No especifíca;Fil: Luna Fineman, Sandra. No especifíca;Fil: Moreno, Arturo. Hospital Universitario de Puebla; MéxicoFil: Saghir Khan, Muhammad. No especifíca;Fil: Sullivan, Michael. Royal Children's Hospital, Melbourne; AustraliaFil: Devidas, Meenakshi. St. Jude Children's Research Hospital; Estados UnidosFil: Santana, Victor. St. Jude Children's Research Hospital; Estados UnidosFil: Caniza, Miguela. St. Jude Children's Research Hospital; Estados UnidosFil: Pritchard Jones, Kathy. University College London; Estados UnidosFil: Rodriguez Galindo, Carlos. St. Jude Children's Research Hospital; Estados Unido
Hepatocyte Growth Factor Modulates Interleukin-6 Production in Bone Marrow Derived Macrophages: Implications for Inflammatory Mediated Diseases
The generation of the pro-inflammatory cytokines IL-6, TNF-α, and IL-1β fuel the acute phase response (APR). To maintain body homeostasis, the increase of inflammatory proteins is resolved by acute phase proteins via presently unknown mechanisms. Hepatocyte growth factor (HGF) is transcribed in response to IL-6. Since IL-6 production promotes the generation of HGF and induces the APR, we posited that accumulating HGF might be a likely candidate for quelling excess inflammation under non-pathological conditions. We sought to assess the role of HGF and how it influences the regulation of inflammation utilizing a well-defined model of inflammatory activation, lipopolysaccharide (LPS)-stimulation of bone marrow derived macrophages (BMM). BMM were isolated from C57BL6 mice and were stimulated with LPS in the presence or absence of HGF. When HGF was present, there was a decrease in production of the pro-inflammatory cytokine IL-6, along with an increase in the anti-inflammatory cytokine IL-10. Altered cytokine production correlated with an increase in phosphorylated GSK3β, increased retention of the phosphorylated NFκB p65 subunit in the cytoplasm, and an enhanced interaction between CBP and phospho-CREB. These changes were a direct result of signaling through the HGF receptor, MET, as effects were reversed in the presence of a selective inhibitor of MET (SU11274) or when using BMM from macrophage-specific conditional MET knockout mice. Combined, these data provide compelling evidence that under normal circumstances, HGF acts to suppress the inflammatory response
The Global COVID-19 Observatory and Resource Center for Childhood Cancer: A response for the pediatric oncology community by SIOP and St. Jude Global
The COVID-19 pandemic quickly led to an abundance of publications and recommendations, despite a paucity of information on how COVID-19 affects children with cancer. This created a dire need for a trusted resource with curated information and a space for the pediatric oncology community to share experiences. The Global COVID-19 Observatory and Resource Center for Childhood Cancer was developed, launched, and maintained by the International Society of Pediatric Oncology and St. Jude Children's Research Hospital. The three components (Resource Library, Global Registry, and Collaboration Space) complement each other, establishing a mechanism to generate and transfer knowledge rapidly throughout the community
Global characteristics and outcomes of SARS-CoV-2 infection in children and adolescents with cancer (GRCCC): a cohort study
Background: Previous studies have shown that children and adolescents with COVID-19 generally have mild disease. Children and adolescents with cancer, however, can have severe disease when infected with respiratory viruses. In this study, we aimed to understand the clinical course and outcomes of SARS-CoV-2 infection in children and adolescents with cancer. Methods: We did a cohort study with data from 131 institutions in 45 countries. We created the Global Registry of COVID-19 in Childhood Cancer to capture de-identified data pertaining to laboratory-confirmed SARS-CoV-2 infections in children and adolescents (<19 years) with cancer or having received a haematopoietic stem-cell transplantation. There were no centre-specific exclusion criteria. The registry was disseminated through professional networks through email and conferences and health-care providers were invited to submit all qualifying cases. Data for demographics, oncological diagnosis, clinical course, and cancer therapy details were collected. Primary outcomes were disease severity and modification to cancer-directed therapy. The registry remains open to data collection. Findings: Of 1520 submitted episodes, 1500 patients were included in the study between April 15, 2020, and Feb 1, 2021. 1319 patients had complete 30-day follow-up. 259 (19·9%) of 1301 patients had a severe or critical infection, and 50 (3·8%) of 1319 died with the cause attributed to COVID-19 infection. Modifications to cancer-directed therapy occurred in 609 (55·8%) of 1092 patients receiving active oncological treatment. Multivariable analysis revealed several factors associated with severe or critical illness, including World Bank low-income or lower-middle-income (odds ratio [OR] 5·8 [95% CI 3·8–8·8]; p<0·0001) and upper-middle-income (1·6 [1·2–2·2]; p=0·0024) country status; age 15–18 years (1·6 [1·1–2·2]; p=0·013); absolute lymphocyte count of 300 or less cells per mm3 (2·5 [1·8–3·4]; p<0·0001), absolute neutrophil count of 500 or less cells per mm3 (1·8 [1·3–2·4]; p=0·0001), and intensive treatment (1·8 [1·3–2·3]; p=0·0005). Factors associated with treatment modification included upper-middle-income country status (OR 0·5 [95% CI 0·3–0·7]; p=0·0004), primary diagnosis of other haematological malignancies (0·5 [0·3–0·8]; p=0·0088), the presence of one of more COVID-19 symptoms at the time of presentation (1·8 [1·3–2·4]; p=0·0002), and the presence of one or more comorbidities (1·6 [1·1–2·3]; p=0·020). Interpretation: In this global cohort of children and adolescents with cancer and COVID-19, severe and critical illness occurred in one fifth of patients and deaths occurred in a higher proportion than is reported in the literature in the general paediatric population. Additionally, we found that variables associated with treatment modification were not the same as those associated with greater disease severity. These data could inform clinical practice guidelines and raise awareness globally that children and adolescents with cancer are at high-risk of developing severe COVID-19 illness. Funding: American Lebanese Syrian Associated Charities and the National Cancer Institute.Fil: Mukkada, Sheena. St Jude Children's Research Hospital; Estados UnidosFil: Bhakta, Nickhill. St Jude Children's Research Hospital; Estados UnidosFil: Chantada, Guillermo Luis. Hospital Sant Joan de Déu Barcelona; España. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Chen, Yichen. St Jude Children's Research Hospital; Estados UnidosFil: Vedaraju, Yuvanesh. St Jude Children's Research Hospital; Estados UnidosFil: Faughnan, Lane. St Jude Children's Research Hospital; Estados UnidosFil: Homsi, Maysam R. St Jude Children's Research Hospital; Estados UnidosFil: Muniz Talavera, Hilmarie. St Jude Children's Research Hospital; Estados UnidosFil: Ranadive, Radhikesh. St Jude Children's Research Hospital; Estados UnidosFil: Metzger, Monika. St Jude Children's Research Hospital; Estados UnidosFil: Friedrich, Paola. St Jude Children's Research Hospital; Estados UnidosFil: Agulnik, Asya. St Jude Children's Research Hospital; Estados UnidosFil: Jeha, Sima. St Jude Children's Research Hospital; Estados UnidosFil: Lam, Catherine G.. St Jude Children's Research Hospital; Estados UnidosFil: Dalvi, Rashmi. Bombay Hospital And Medical Research Centre; IndiaFil: Hessissen, Laila. Universite Mohammed V. Rabat; Otros paises de ÁfricaFil: Moreira, Daniela. St Jude Children's Research Hospital; Estados UnidosFil: Santana, Victor M. St Jude Children's Research Hospital; Estados UnidosFil: Sullivan, Michael. University of Melbourne; AustraliaFil: Bouffet, Eric. University Of Toronto. Hospital For Sick Children; CanadáFil: Caniza, Miguela A.. St Jude Children's Research Hospital; Estados UnidosFil: Devidas, Meenakshi. St Jude Children's Research Hospital; Estados UnidosFil: Pritchard Jones, Kathy. UCL Great Ormond Street Institute of Child Health; Reino UnidoFil: Rodriguez Galindo, Carlos. St Jude Children's Research Hospital; Estados Unido
Global characteristics and outcomes of SARS-CoV-2 infection in children and adolescents with cancer (GRCCC): a cohort study
Background: Previous studies have shown that children and adolescents with COVID-19 generally have mild disease. Children and adolescents with cancer, however, can have severe disease when infected with respiratory viruses. In this study, we aimed to understand the clinical course and outcomes of SARS-CoV-2 infection in children and adolescents with cancer. Methods: We did a cohort study with data from 131 institutions in 45 countries. We created the Global Registry of COVID-19 in Childhood Cancer to capture de-identified data pertaining to laboratory-confirmed SARS-CoV-2 infections in children and adolescents (<19 years) with cancer or having received a haematopoietic stem-cell transplantation. There were no centre-specific exclusion criteria. The registry was disseminated through professional networks through email and conferences and health-care providers were invited to submit all qualifying cases. Data for demographics, oncological diagnosis, clinical course, and cancer therapy details were collected. Primary outcomes were disease severity and modification to cancer-directed therapy. The registry remains open to data collection. Findings: Of 1520 submitted episodes, 1500 patients were included in the study between April 15, 2020, and Feb 1, 2021. 1319 patients had complete 30-day follow-up. 259 (19·9%) of 1301 patients had a severe or critical infection, and 50 (3·8%) of 1319 died with the cause attributed to COVID-19 infection. Modifications to cancer-directed therapy occurred in 609 (55·8%) of 1092 patients receiving active oncological treatment. Multivariable analysis revealed several factors associated with severe or critical illness, including World Bank low-income or lower-middle-income (odds ratio [OR] 5·8 [95% CI 3·8–8·8]; p<0·0001) and upper-middle-income (1·6 [1·2–2·2]; p=0·0024) country status; age 15–18 years (1·6 [1·1–2·2]; p=0·013); absolute lymphocyte count of 300 or less cells per mm3 (2·5 [1·8–3·4]; p<0·0001), absolute neutrophil count of 500 or less cells per mm3 (1·8 [1·3–2·4]; p=0·0001), and intensive treatment (1·8 [1·3–2·3]; p=0·0005). Factors associated with treatment modification included upper-middle-income country status (OR 0·5 [95% CI 0·3–0·7]; p=0·0004), primary diagnosis of other haematological malignancies (0·5 [0·3–0·8]; p=0·0088), the presence of one of more COVID-19 symptoms at the time of presentation (1·8 [1·3–2·4]; p=0·0002), and the presence of one or more comorbidities (1·6 [1·1–2·3]; p=0·020). Interpretation: In this global cohort of children and adolescents with cancer and COVID-19, severe and critical illness occurred in one fifth of patients and deaths occurred in a higher proportion than is reported in the literature in the general paediatric population. Additionally, we found that variables associated with treatment modification were not the same as those associated with greater disease severity. These data could inform clinical practice guidelines and raise awareness globally that children and adolescents with cancer are at high-risk of developing severe COVID-19 illness. Funding: American Lebanese Syrian Associated Charities and the National Cancer Institute.Fil: Mukkada, Sheena. St Jude Children's Research Hospital; Estados UnidosFil: Bhakta, Nickhill. St Jude Children's Research Hospital; Estados UnidosFil: Chantada, Guillermo Luis. Hospital Sant Joan de Déu Barcelona; España. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Chen, Yichen. St Jude Children's Research Hospital; Estados UnidosFil: Vedaraju, Yuvanesh. St Jude Children's Research Hospital; Estados UnidosFil: Faughnan, Lane. St Jude Children's Research Hospital; Estados UnidosFil: Homsi, Maysam R. St Jude Children's Research Hospital; Estados UnidosFil: Muniz Talavera, Hilmarie. St Jude Children's Research Hospital; Estados UnidosFil: Ranadive, Radhikesh. St Jude Children's Research Hospital; Estados UnidosFil: Metzger, Monika. St Jude Children's Research Hospital; Estados UnidosFil: Friedrich, Paola. St Jude Children's Research Hospital; Estados UnidosFil: Agulnik, Asya. St Jude Children's Research Hospital; Estados UnidosFil: Jeha, Sima. St Jude Children's Research Hospital; Estados UnidosFil: Lam, Catherine G.. St Jude Children's Research Hospital; Estados UnidosFil: Dalvi, Rashmi. Bombay Hospital And Medical Research Centre; IndiaFil: Hessissen, Laila. Universite Mohammed V. Rabat; Otros paises de ÁfricaFil: Moreira, Daniela. St Jude Children's Research Hospital; Estados UnidosFil: Santana, Victor M. St Jude Children's Research Hospital; Estados UnidosFil: Sullivan, Michael. University of Melbourne; AustraliaFil: Bouffet, Eric. University Of Toronto. Hospital For Sick Children; CanadáFil: Caniza, Miguela A.. St Jude Children's Research Hospital; Estados UnidosFil: Devidas, Meenakshi. St Jude Children's Research Hospital; Estados UnidosFil: Pritchard Jones, Kathy. UCL Great Ormond Street Institute of Child Health; Reino UnidoFil: Rodriguez Galindo, Carlos. St Jude Children's Research Hospital; Estados Unido
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