[Covid-19 and adolescence: Clinical findings and psychopathological thoughts about some immediate or differed impacts]. / Covid-19 et adolescence : constats cliniques et réflexions psychopathologiques à propos de quelques incidences immédiates ou différées.

This pandemic has profoundly changed our lives for many months and its long-term consequences remain largely hypothetical. The containment measures, the threats to the health of relatives, the constraints limiting social openings have left no one indifferent, but may have particularly impeded "adolescent separation work". Most of adolescents have been able to deploy their adaptation capacities, while for others this exceptional situation has triggered stressful reactions for those around them. Some were immediately overwhelmed by the direct or indirect manifestations of their anxiety or by their intolerance of governmental instructions, others revealed their difficulties only when the schools reopened, or even in the distant "aftermath", as shown by some studies carried out at a distance revealing a clear increase in suicidal ideation. We will not be surprised by the problems of adaptation of the most fragile, of those suffering from psychopathological disorders, but it is necessary to note an increase in the needs for psychological care. Teams dealing with the suffering of adolescents are puzzled by the increase in self-vulnerable acts, anxious school refusals, eating disorders or various forms of addiction to screens. However, everyone agrees on the key role of parents and the impact of their own suffering on that of their children, even if they are young adults. Of course, it is important that caregivers do not forget the parents in the support they aim to provide to their young patients.

Initiation of phospholipomannan ß-1,2 mannosylation involves Bmts with redundant activity, influences its cell wall location and regulates ß-glucans homeostasis but is dispensable for Candida albicans systemic infection.

Pathogenic and non-pathogenic fungi synthesize glycosphingolipids, which have a crucial role in growth and viability. Glycosphingolipids also contribute to fungal-associated pathogenesis. The opportunistic yeast pathogen Candida albicans synthesizes phospholipomannan (PLM), which is a glycosphingolipid of the mannosylinositol phosphorylceramide family. Through its lipid and glycan moieties, PLM contributes to the initial recognition of the yeast, causing immune system disorder and persistent fungal disease through activation of host signaling pathways. The lipid moiety of PLM activates the deregulation signaling pathway involved in yeast phagocytosis whereas its glycan moiety, composed of ß-1,2 mannosides (ß-Mans), participates to inflammatory processes through a mechanism involving Galectin-3. Biosynthesis of PLM ß-Mans involves two ß-1,2 mannosyltransferases (Bmts) that initiate (Bmt5) and elongate (Bmt6) the glycan chains. After generation of double bmtsΔ mutants, we show that Bmt5 has redundant activity with Bmt2, which can replace Bmt5 in bmt5Δ mutant. We also report that PLM is located in the inner layer of the yeast cell wall. PLM seems to be not essential for systemic infection of the yeast. However, defect of PLM ß-mannosylation increases resistance of C. albicans to inhibitors of ß-glucans and chitin synthesis, highlighting a role of PLM in cell wall homeostasis.

The high burden of hospitalizations for primary EBV infection: a 6-year prospective survey in a French hospital.

Primary Epstein-Barr virus infection (PEI) is acquired increasingly later in life in developed countries, involving a growing number of adults. No studies have examined the effect of age on PEI. We conducted a prospective, single-centre, noninterventional survey to assess the clinical and economic effects of PEI care according to age. We included all serology-confirmed cases observed in all departments of a large regional hospital. Clinical and biologic data, therapeutics and costs of care were examined. Over a 6-year period, we included 292 subjects (148 children and 144 adults) with a median age of 15.4 years (range 9 months to 79 years). Adults were hospitalized more often (83% vs. 60%) and for longer periods of time (median 4 days vs. 2 days) than children (p ≤ 0.0001 for both). Two adults required a secondary transfer into the intensive care unit, although no children did. Typically, adults showed higher levels of activated lymphocytes and liver abnormalities. They also required the use of systemic corticosteroids more often (45% vs. 23%, p < 0.0001) and for longer periods of time (median 7 days vs. 3 days, p 0.02) than children. Overall, the costs were significantly higher for adults than for children (median, €1940 vs. €1130, p < 0.0001), mainly because of the frequency and duration of hospitalizations. Age increases the immune response and clinical severity of PEI, resulting in substantial additional costs for the community. Better recognition of the disease in adults could shorten the average length of hospital stay.

Improvement of the detection of neurodegenerative Alzheimer's disease through a specific surface chemistry applied onto the inner surface of the titration well.

The main objective of this paper was to illustrate the enhancement of the sensitivity of the ELISA titration of Tau proteins while reducing other non-specific adsorptions that could increase the optical densities and could lead to false positives. This goal was obtained thanks to the association of cold plasma and wet chemistries of the inner surface of the titration well. The PP surface was cold plasma-activated, then coated with different amphiphilic molecules bearing either ionic charges and/or long hydrocarbon chains. The support treated and coated with hexatrimethylammonium bromide improves the signal detection of proteins while reducing the background due to non-specific associations of biomolecules such as hyperphosphorylated Tau protein. However, coating with 3-butenylamine hydrochloride could also be suitable.

Study of the adhesion of neurodegenerative proteins on plasma-modified and coated polypropylene surfaces.

The inner polymeric surface of an ELISA titration well is plasma-modified and coated with different surfactant molecules. The titration of neurodegenerative proteins markers (prion, Tau and ß-synuclein), previously demonstrated as more efficient with such modified tubes, is related to the adhesion behaviour of these proteins and their corresponding capture antibodies. The adhesion process is studied in terms of anchoring and specific mechanisms. The proteins and antibodies binding onto such modified surfaces is related to the substrate hydrophilic character calculated from the angle contact measure, to the polymer surface charge measured through the streaming potential determination at different pH and the inner surface roughness determined from AFM images. Furthermore, the influence of the blocking agent used during the ELISA titration is also studied.

[Validation of the French version of a pleasure scale for children (The Pleasure Scale for Children, PSC, Kazdin, 1989) in 214 hospitalized children in pediatrics]. / Etude de validation de la version française de l'échelle de plaisir pour infants (EPE) de Kazdin (the pleasure scale for children, PSC, Kazdin, 1989) chez 214 enfants hospitalisés en pédiatrie.

UNLABELLED: The aim of this study was to determine the metrological parameters of a french version of the Pleasure Scale for Children (PSC): 214 (121 males and 93 females) with a mean age of 8.69 years (sd: 1.95) ranging from 6 years to 12 years were included in the study. The children were inpatients presenting various somatic disorders. STATISTICAL ANALYSIS: First a principal component analysis was done on the 39 items of the correlation matrix. Several guidelines were used to limit the number of factors (Kaiser criteria, Cattell scree test, Horn parallel analysis). Secondly the construct validity was studied using the alpha Cronbach coefficient and by calculing the Pearson correlation coefficient between each item and the total score. Thirdly the concurrent validity was determinated using two items of the Children Depression Rating Scale--Revised (CDRS-R) measuring pleasure (social withdrawal and enjoyment capacity). Fourthly the discriminant validity of the PSC was studied by comparing non depressive children (score lower than 30 to the CDRS-R) and depressive children (score higher than 30 to the CDRS-R). RESULTS: The principal component analysis showed a one factor solution with 33 items among the 39 having a higher than 0.3 saturation. The Cronbach alpha coefficient was 0.84. All the items correlated with the total score. The mean value was 0.37. The correlations between the total score of the scale and the CDRS-R enjoyment capacity and social withdrawal items were respectively -0.37 (p < 0.01) and -0.38 (p < 0.01). PSC score were significantly lower in depressive children (m = 86.96; sd = 8.33) than in non depressive children (m = 94.67; sd = 10) (t = 5.32; df = 212; p < 0.001).

Alternaria infection of the skin and joints. A report of two cases involving the hand.

Alternaria is a fungus that is usually saprophytic but occasionally causes skin infections. Involvement of other structures is exceedingly rare. We report two cases in which a joint was also affected. The possible precipitating role of intraarticular glucocorticoid therapy is discussed. Both patients achieved a full recovery after itraconazole therapy, given for 12 and seven months, respectively.

[Acute pancreatitis induced by drugs derived from 5-aminosalicylic acid: case report and review of the literature]. / Pancréatites aiguës induites par les médicaments dérivés de l'acide 5-aminosalicylique: un cas et revue de la littérature.

The pancreatic toxicity of oral 5-aminosalicylic acid (5ASA) derivatives used for the treatment of inflammatory bowel diseases remains controversial. A new case of mesalazine-induced acute pancreatitis (AP), with positive rechallenge, and an analysis of the previous published cases are presented. Twenty-nine patients (17 women, 12 men), aged 26.4 +/- 9.9 (12-43) years, were involved, receiving sulfasalazine (n = 11), mesalazine (n = 16), olsalazine (n = 1) or 5ASA without further informations (n = 1), for ulcerative colitis (n = 15), Crohn's disease (n = 13) or another indication (n = 1). The AP occurred in the first month of treatment in 71.4 per cent of the cases (n = 28). The clinical course was essentially benign in most of the cases. Recurrence of AP after rechallenge was observed in 17 of the 19 cases, even if the molecule, the dose or the form were modified. These results show that all 5ASA derivatives are potentially pancreatotoxic. An AP must be considered when an occurrence or increase of abdominal pain occurs during such therapy and warrants serum amylase assay and discontinuation of the drug.

[The role of transfusions in post-operative cytomegalovirus infections (in non-immunosuppressed subjects)]. / Rôle des transfusions au cours des infections à cytomégalovirus post-chirurgicales (chez des sujets non immunodéprimés).

Cytomegalovirus (CMV) infection is most frequently observed after open heart surgery with extracorporeal circulation (ECC) and common after thoracic surgery without ECC and after splenectomies though very rare after other types of surgery. Studies on open heart patients with ECC carried out in the period 1968-1979 show an average seroconversion rate of 28% while the febrile mononucleosis syndrome rate would amount to 4.2%. Seroconversion is defined as a confirmed increase in the titer of complement fixing (CF) antibody by a factor of 4 or more. The risk of CMV infection is proportional to the quantity of blood transfused. Fresh blood was initially suspected of being the cause, but later investigator have found no difference between fresh and preserved blood. Seroconversion and/or infection risks can be sharply cut by using deleukocyted blood or frozen deglycerolized erythrocytes free of viable leukocytes. Seroconversion risk increases significantly when CMV (CF) antibodies are present in transfused blood. However, the presence of these antibodies in the recipient's blood appears to afford protection against seroconversion and/or infection, except in the case of immunodepressed patients. In conclusion, CMV febrile mononucleosis syndrome might be due to latent CMV in the transfused blood. This transfusion of allogenic blood might induce an immunological reaction that reactivates the latent CMV transmitted to recipient.

[Analytical study and processing of information from a primary intervention report]. / Etude analytique et traitement de l'information à partir d'une fiche primaire d'intervention.

Analytical study of treatment of information from a primary intervention by the S.A.M.U. were brought about with the aim of performing a "statistical" study of enumeration of the various possibilities, using three "standard" programmes. After exploitation of the statistical data, the card index is stocked on conventional magnetic tape and verified by different parameters permitting its identification. In addition, the concatenation of different card indices is easy to obtain, which makes it possible to carry out research into all existing file cards regardless of the month or year.