Hematome organise du sinus maxillaire a propos d’un cas

L’hématome organisé du sinus maxillaire est une entité rare. Son étiopathogénie reste incertaine. Nous rapportons le cas d’une patiente âgée de 16 ans présentant une épistaxis unilatérale droite de grande abondance avec une endoscopie nasale strictement normale. L’imagerie était en faveur d’une tumeur vasculaire du sinus maxillaire. Une exérèse chirurgicale complète a été réalisée par voie combinée avec des suites simples. L’examen anatomopathologique a conclu à un hématome organisé du sinus maxillaire. Nous discutons, dans ce travail, l’étiopathogénie, les caractéristiques cliniques, radiologiques et les volets thérapeutiques de cette entité.Mots clés : Hématome organisé, sinus maxillaire, tomodensitométrie, chirurgie

Infection néonatale bactérienne précoce : Quand mettre sous antibiotique et quelle antibiothérapie ? Early bacterial neonatal infection: When to indicate antibiotic treatment and what antibiotic therapy ?

Objective. Propose a relevant management strategy that can identify newborns with a bacterial infectious risk and those under clinical monitoring alone or in combination with parenteral antibiotic therapy.Methods. Retrospective study carried out between SA < 42, suspected of early bacterial infection and monitored in Maternity and in the Neonatology Unit of the Hospital Group Carnelle Portes of Oise [Val France]. The clinical-biological and bacteriological data, the therapeutic strategy and the evolution are analyzed. Results. Two hundred and forty newborns were eligible and divided into three groups: 120 asymptomatic newborns with antenatal criteria for bacterial infectious risk [G1NAS], 70 symptomatic newborns with antenatal criteria for bacterial infectious risk [G2NSCARIB] and 50 symptomatic newborns without antenatal criteria of bacterial infectious risk [G3NSSCARIB]. Inflammatory biology is limited tocolonized G1NAS newborns and symptomatic groups. The identified bacteria [Peripheral samples, gastric fluid, blood and cerebrospinal fluid] were mainly the Streptococcus of the group and the E Coli. Antibiotic therapy has been shown to be useful in asymptomatic newborns with inflammatory syndrome and bacteria identified on peripheral samples and gastric fluid, but  also in all symptomatic newborns. Conclusion. In a early bacterial infection, an interventionist attitude is required, but early antibiotic therapy is only useful in the situation of symptomatic newborns. On the otherhand, in the asymptomatic newborns, antibiotic therapy will be reserved for those carrying both an identified bacteria and an inflammatory syndrome. Contexte et objectif. L‟infection néonatale bactérienne précoce est greffée d‟une forte mortalité et morbidité conduisant à une antibiothérapie probabiliste sans délai souvent à posteriori inutile. L‟objectif du présent travail était de proposer une stratégie de prise en charge pertinente susceptible de bien identifier les nouveau-nés à risque infectieux bactérien et ceux relevant d‟une surveillance clinique seule ou associée à une antibiothérapie parentérale.    Méthodes. Etude documentaire menée entre janvier 2014 et janvier 2016 sur des nouveau-nés de 36≥SA<42, suspects d‟infection bactérienne précoce et suivis en Maternité et dans l‟unité de Néonatologie du Groupe Hospitalier Carnelle Portes de l‟Oise [Val D‟Oise, France]. Les données clinico-biologiques et bactériologiques, la stratégie thérapeutique et l‟évolution sont analysées.  Résultats. Deux cent quarante nouveau-nés [NNES] ont été éligibles et repartis en trois groupes : 120 NNES asymptomatiques avec critères anténatals de risque infectieux bactérien [G1NAS], 70 NNES symptomatiques avec critères anténatals de risque infectieux bactérien [G2NSCARIB] et 50 NNES symptomatiques sans critères anténatals de risque infectieux bactérien [G3NSSCARIB]. La biologie inflammatoire est limitée aux NNES du groupe G1NAS colonisés et aux groupes symptomatiques. Les germes identifiés [Prélèvements périphériques, liquide gastrique, sang et liquide céphalorachidien] ont été principalement le Streptocoque du groupe β et l‟E Coli. L‟antibiothérapie s‟est avérée utile chez les NNES asymptomatiques avec syndrome inflam-matoire et germes identifiés sur les prélèvements périphériques et liquide gastrique, mais aussi chez tous les NNES symptomatiques.                                                                    Conclusion. Chez un NNE âgé de ≥ 36SA et suspect d‟infection bactérienne précoce, une attitude interventionniste est de rigueur, mais l‟antibiothérapie sans délai n‟est utile que dans les situations des NNES symptomatiques. En revanche, chez les NNES asymptomatiques, l‟antibiothérapie sera réservée à ceux porteurs à la fois d‟un germe et d‟un syndrome inflammatoire

Acute myocardial infarction in a patient with hypofibrinogenemia: a case report

<p>Abstract</p> <p>Introduction</p> <p>Congenital fibrinogen deficiency is a rare coagulation disorder usually responsible for hemorrhagic diathesis. However, it can be associated with thrombosis and there have been limited reports of arterial thrombotic complications in these patients.</p> <p>Case presentation</p> <p>A 42-year-old Tunisian man with congenital hypofibrinogenemia and no cardiovascular risk factors presented with new onset prolonged angina pectoris. An electrocardiogram showed features of inferior acute myocardial infarction. His troponin levels had reached 17 ng/L. Laboratory findings confirmed hypofibrinogenemia and ruled out thrombophilia. Echocardiography was not useful in providing diagnostic elements but did show preserved left ventricular function. Coronary angiography was not performed and our patient did not receive any anticoagulant treatment due to the major risk of bleeding. Magnetic resonance imaging confirmed myocardial necrosis. Our patient was managed with aspirin, a beta-blocker, an angiotensin-converting enzyme inhibitor and statin medication. The treatment was well tolerated and no ischemic recurrence was detected.</p> <p>Conclusion</p> <p>Although coronary thrombosis is a rare event in patients with fibrinogen deficiency, this condition is of major interest in view of the difficulties observed in managing these patients.</p

Agroecology and Health: Lessons from Indigenous Populations.

Purpose of reviewThe article aims to systematize and disseminate the main contributions of indigenous ancestral wisdom in the agroecological production of food, especially in Latin America. For this purpose, it is necessary to ask whether such knowledge can be accepted by academia research groups and international forums as a valid alternative that could contribute to overcome the world's nutritional problems.Recent findingsAlthough no new findings are being made, the validity of ancestral knowledge and agroecology is recognized by scientific research, and by international forums organized by agencies of the United Nations. These recommend that governments should implement them in their policies of development, and in the allocation of funds to support these initiatives. Agroecology and ancestral knowledge are being adopted by a growing number of organizations, indigenous peoples and social groups in various parts of the world, as development alternatives that respond to local needs and worldviews. Its productive potential is progressively being recognized at an international level as a model that contributes to improve the condition of people regarding nutritional food

Critical evaluation of key evidence on the human health hazards of exposure to bisphenol A

Despite the fact that more than 5000 safety-related studies have been published on bisphenol A (BPA), there seems to be no resolution of the apparently deadlocked controversy as to whether exposure of the general population to BPA causes adverse effects due to its estrogenicity. Therefore, the Advisory Committee of the German Society of Toxicology reviewed the background and cutting-edge topics of this BPA controversy. The current tolerable daily intake value (TDI) of 0.05 mg/kg body weight [bw]/day, derived by the European Food Safety Authority (EFSA), is mainly based on body weight changes in two- and three-generation studies in mice and rats. Recently, these studies and the derivation of the TDI have been criticized. After having carefully considered all arguments, the Committee had to conclude that the criticism was scientifically not justified; moreover, recently published additional data further support the reliability of the two-and three-generation studies demonstrating a lack of estrogen-dependent effects at and below doses on which the current TDI is based. A frequently discussed topic is whether doses below 5 mg/ kg bw/day may cause adverse health effects in laboratory animals. Meanwhile, it has become clear that positive results from some explorative studies have not been confirmed in subsequent studies with higher numbers of animals or a priori defined hypotheses. Particularly relevant are some recent studies with negative outcomes that addressed effects of BPA on the brain, behavior, and the prostate in rodents for extrapolation to the human situation. The Committee came to the conclusion that rodent data can well be used as a basis for human risk evaluation. Currently published conjectures that rats are insensitive to estrogens compared to humans can be refuted. Data from toxicokinetics studies show that the half-life of BPA in adult human subjects is less than 2 hours and BPA is completely recovered in urine as BPA-conjugates. Tissue deconjugation of BPA-glucuronide and -sulfate may occur. Because of the extremely low quantities, it is only of minor relevance for BPA toxicity. Biomonitoring studies have been used to estimate human BPA exposure and show that the daily intake of BPA is far below the TDI for the general population. Further topics addressed in this article include reasons why some studies on BPA are not reproducible; the relevance of oral versus non-oral exposure routes; the degree to which newborns are at higher systemic BPA exposure; increased BPA exposure by infusions in intensive care units; mechanisms of action other than estrogen receptor activation; and the current regulatory status in Europe, as well as in the USA, Canada, Japan, New Zealand, and Australia. Overall, the Committee concluded that the current TDI for BPA is adequately justified and that the available evidence indicates that BPA exposure represents no noteworthy risk to the health of the human population, including newborns and babies

New modeling of the power diode using the VHDL-AMS language

Design of integrated power systems requires prototype-less approaches. Accurate simulations are necessary for analysis and verification purposes. Simulation relies on component models and associated parameters. This paper focuses on an implementation of a physic-based analytical PIN diode model [Power Electron. 8, 342 (1993)] with the very high description language VHDL-AMS [IEEE Computer Society, IEEE Draft Standard VHDL-AMS Language Reference Manual, 1997]. The Lumped Charge (LC) concept of Linvill is employed. The state-of-art of parameter extraction methods is briefly recalled and a step-by-step extraction procedure for the model parameters is described. Due to poor agreement between simulation results and experimental data, an improvement is added to the model. Finally, our improved model is validated with a confrontation of the simulated and the experimental curves for both current and voltage at different range of the operating conditions. All this operation was made under the Free version of the “SIMPLORER©-SV 7.0” environment

Biodegradation of phenanthrene by a bacterial consortium enriched from Sercina oilfield

The phenanthrene (PHE) degradation by a halotolerant bacterial consortium enriched from production water of Sercina oilfield in Tunisia was investigated. The consortium PHMM utilized PHE (200&nbsp;mg/L), as a sole carbon source, in the presence of a wide range of NaCl concentrations, from 1 to 5% (w/v). The maximum growth rate was obtained at 500&nbsp;mg/L of PHE. A PHE metabolism was assayed by using FTIR, UV and GC–MS analyses. Results revealed that the consortium PHMM metabolized PHE via protochatechuate pathway since intermediates such as naphthalenol and phthalic acid were detected. Phylogenetic analysis showed that the adapted consortium PHMM was composed by two dominant bacterial strains, identified as Pseudomonas sp. (strain PH1) and Staphylococcus sp. (strain PH2). All the results indicated that the microorganisms from the Tunisian oilfield have a promising application in bioremediation of petrochemical contaminated environments and could be potentially useful for the study of PAHs biodegradation