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Chakib Nejjari Abdelghafour Marfak Ahmed Rguig Abderrahmane Maaroufi Ihssane El Marouani Abderrafii El Haloui Bouchra El Johra Rachid Ouahabi Rachid Moulki Amina Idrissi Azami Youness El Achhab 《AIMS Public Health》2021,8(2):285
This study presents the relationships between ambient air pollutants and morbidity and emergency department visits among children and adults performed in Great Casablanca, the most populated and economic region in Morocco. This research was analyzed using conditional Poisson model for the period 2011–2013. In the period of study, the daily average concentrations of SO2, NO2, O3 and PM10 in Casablanca were 209.4 µg/m3, 61 µg/m3, 113.2 µg/m3 and 75.1 µg/m3, respectively. In children less than 5 years old, risk of asthma could be increased until 12% per 10 µg/m3 increase in NO2, PM10, SO2 and O3. In children over 5 years and adults, an increase of 10 µg/m3 air pollutant can cause an increase until 3% and 4% in respiratory consultations and acute respiratory infection, respectively. Similarly, impact on emergency department visits due to respiratory and cardiac illness was established. Our results suggest a not negligible impact on morbidity of outdoor air pollution by NO2, SO2, O3, and PM10. 相似文献
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Dejean E Foisseau M Lagarrigue F Lamant L Prade N Marfak A Delsol G Giuriato S Gaits-Iacovoni F Meggetto F 《Blood》2012,119(20):4698-4707
Anaplastic large-cell lymphomas (ALCLs) bearing the t(2;5) translocation (ALK(+)ALCLs) are frequently characterized by skin colonization and associated with a poor prognosis. Using conditional transgenic models of anaplastic lymphoma kinase-positive (ALK(+)) lymphomas and human ALK(+)ALCL cell lines, in the present study, we show that high-mobility-group box-1 (HMGB-1), a proinflammatory cytokine, is released by ALK(+) cells, and demonstrate extracellular HMGB-1-stimulated secretion of the IL-8 chemokine by HaCaT keratinocytes through the involvement of MMP-9, PAR-2, and the NF-κB pathway. Furthermore, we demonstrate that, in vitro, IL-8 is able to induce the invasiveness of ALK(+) cells, which express the IL-8 receptors CXCR1 and CXCR2. In vitro and in vivo, HMGB-1 inhibition achieved by glycyrrhizin treatment led to a drastic reduction in ALK(+) cell invasiveness. The pathophysiological relevance of our observations was confirmed by demonstrating that the HMGB-1 and IL-8 receptors are expressed in ALK(+)ALCL biopsies. We have also shown that IL-8 secretion is correlated with leukemic dissemination of ALK(+) cells in a significant number of patients. The results of the present study demonstrate for the first time a relationship among the pro-inflammatory mediators HMGB-1, MMP-9, PAR-2, and IL-8. We propose that these mediators create a premetastatic niche within the skin, thereby participating in ALK(+) lymphoma epidermotropism. 相似文献
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Laraqui A Allami A Carrié A Coiffard AS Benkouka F Benjouad A Bendriss A Kadiri N Bennouar N Benomar A Guedira A Raisonnier A Fellati S Srairi JE Benomar M 《Acta cardiologica》2006,61(1):51-61
BACKGROUND: Elevated plasma total homocysteine (tHcy) is increasingly being recognized as a risk factor for coronary artery disease (CAD) and other defects. Recent genetic studies have characterized molecular determinants contributing to altered homocysteine metabolism. Our objectives were therefore to confirm the relationship of tHcy with CAD and to examine the importance of genetic influence on tHcy in the coronary angiograms and conventional cardiovascular risk factors recorded in 230 subjects. We also determined the genotype frequencies distribution of the A2756G transition of the B12-dependent methionine synthase (MTR) gene and the A66G mutation of the methionine synthase reductase (MTRR) gene. RESULTS: Patients with CAD (n=151) had significantly higher tHcy concentrations than control subjects (15.49 +/- 2.75 micromol/l vs. 11.21 +/- 3.54 micromol/l, P < 0.001). Hyperhomocysteinaemia (tHcy > or =15 micromol/l) was a risk factor for CAD [RR = 4.07, 95% CI: 2.21 - 7.47, P < 0.001]. The homocysteine concentrations were significantly different between smokers and non-smokers, at 15.63 +/- 3.10 vs. 12.45 +/- 3.84 micromol/l, P < 0.05. In addition, smokers with hyperhomocysteinaemia demonstrated a markedly increased risk of CAD (OR = 2.50, 95% CI: 1.67 - 3.32, P < 0.05) compared with non-smokers with normal homocysteine.The 2756G and the 66G allele contribute to a moderate increase in homocysteine levels (P = 0.008 and P = 0.007, respectively), but not to CAD (P > 0.05). Combined MTR and MTRR polymorphisms, the 2756AG + 66AG and the 2756AG + 66GG were the combined genotypes that were a significant risk factor for having hyperhomocysteinaemia (14.4 +/- 2.8 micromol/l, OR = 2.75, IC 95% = 1.21 - 6.24, P=0.016 and 17.9 +/- 4.1 micromol/l, OR = 6.28, IC 95% = 1.46 - 12.1, P = 0.021, respectively). Statistic analysis using the UniANOVA test shows that these two polymorphisms have an interactive effect circulating homocysteine levels (P < 0.05). CONCLUSION: Our data suggest that moderately elevated tHcy levels are prevalent in our population and are associated with an increased risk for CAD. This study provides evidence that the MTR A2756G and MTRR A66G polymorphisms significantly influence the circulating homocysteine concentration. In addition, the MTR and MTRR genes may interact to increase the risk for having hyperhomocysteinaemia. 相似文献
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Ismail Aissa Mohammed Meziane Abdelghafour El Koundi Mustapha Bensghir Samir Siah Salim Jaafar Alaoui 《The American journal of emergency medicine》2018,36(4):733.e1-733.e2
Introduction
Adrenal insufficiency (AI) is a rare endocrine disorder, which can in its acute form be life-threatening in case of late diagnosis or treatment. The stress during a thermal burn can easily decompensate the AI. We report the case of an acute adrenal insufficiency (AAI) discovered following a refractory collapse occurred after a severe thermal burn.Case presentation
A 60-year-old woman was accidentally burned to the lower limbs by hot water. Total burn surface area was 36 %. The patient had local care and dressings, vascular filling, and analgesics. Four hours later, she became dyspneic, and presented tachycardia associated with collapse at 60/40 mmHg. Suspecting a hypovolemic origin, we performed a solid fluid replacement with colloids. However, hemodynamic stability was not achieved and motivated a continuous injection of norepinephrine. Despite high doses, immediate evolution was marked by a persistent precarious hemodynamic state. AAI was suspected, and a substitutive hormonotherapy was started. The clinical condition progressively improved and catecholamines were quickly stopped.Conclusion
AAI is a vital emergency. The large burn is a possible cause of the AI decompensation. This diagnosis must be kept in mind when the hemodynamic status remains unstable despite an adequate vascular treatment. 相似文献8.
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Abdelghafour Elkoundi Aziza Bentalha Alae El Koraichi Salma Ech-Cherif El Kettani 《The American journal of emergency medicine》2018,36(4):734.e3-734.e4
Asthma is a major cause of morbidity and mortality despite advances in outpatient treatment. Sometimes, children fail to respond to standard treatment and can potentially require mechanical ventilation.We describe a case of a 26-month-old girl with a severe asthma exacerbation successfully managed by ketamine administration via nebulization route that permitted to avoid mechanical ventilation. Nebulized ketamine might be a reasonable option to avoid mechanical ventilation in children who fail to respond to standard treatment of severe asthma exacerbation. 相似文献
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David Rizzo Angad Lotay Nathalie Gachard Ibtissam Marfak Jean‐Luc Faucher Franck Trimoreau Estelle Guérin Dominique Bordessoule Arnaud Jaccard Jean Feuillard 《American journal of hematology》2013,88(9):747-753
It has recently been suggested that the percentage of smudge cells on blood smears from patients with chronic lymphocytic leukemia (CLL) could predict overall survival. However, smudge cells are a cytological artifact influenced by multiple physical factors not related to CLL. To identify simple parameters reflecting CLL cell fragility, we studied CD45 expression in a series of 66 patients with Binet stage A CLL. Decreased CD45 expression was specific for CLL cells when compared to 44 patients with a leukemic phase of B‐cell non Hodgkin lymphoma and 42 control B‐cells. CD45 expression was markedly decreased for all patients with CLL with high percentages of smudge cells. CLL cells with the lowest CD45 expression were the most sensitive to osmotic shock. Very low levels of CD45 expression were significantly associated with lack of CD38 expression, absence of trisomy 12, and with increased treatment free survival time. Altogether, these results demonstrate that low levels of CD45 expression are specific to CLL cells and reflect cell fragility, suggesting that this is an important intrinsic biological feature that determines disease course. Am. J. Hematol. 88:747–753, 2013. © 2013 Wiley Periodicals, Inc. 相似文献