Effect of bacterial lipase on anaerobic co-digestion of slaughterhouse wastewater and grease in batch condition and continuous fixed-bed reactor

Abstract Background This study aimed to investigate the effects of bacterial lipase on biogas production of anaerobic co-digestion of slaughterhouse wastewater (SHWW) and hydrolyzed grease (HG). A neutrophilic Staphylococcus xylosus strain exhibiting lipolytic activity was used to perform microbial hydrolysis pretreatment of poultry slaughterhouse lipid rich waste. Results Optimum proportion of hydrolyzed grease was evaluated by determining biochemical methane potential. A high biogas production was observed in batch containing a mixture of slaughterhouse composed of 75% SHWW and 25% hydrolyzed grease leading to a biogas yield of 0.6 L/g COD introduced. Fixed bed reactor (FBR) results confirmed that the proportion of 25% of hydrolyzed grease gives the optimum condition for the digester performance. Biogas production was significantly high until an organic loading rate (OLR) of 2 g COD/L. d. Conclusion This study indicates that the use of biological pre-treatment and FBR for the co-digestion of SHWW and hydrolyzed grease is feasible and effective

Grossesse et hypophysite: une nouvelle observation

Introduction: L’hypophysite est une lésion hypophysaire rare qui pose des difficultés diagnostiques et thérapeutiques. Ses manifestations cliniques et radiologiques sont difficiles à distinguer des tumeurs hypophysaires.Observation: Nous rapportons, l’observation d’une femme âgée de 40 ans qui s’est présenté pour des céphalées, troubles visuels et vomissements au cours de son troisième trimestre de grossesse. L’imagerie par résonnance magnétique a montré une masse sellaire et supra sellaire de 21 mm et qui adhérait au chiasma optique. L’examen anatomopathologique réalisé après une chirurgie d’exérèse trans-sphénoïdale a montré un tissu fibreux associé à des lymphocytes et à des plasmocytes. Une nette amélioration clinique était obtenue après le traitement chirurgical, une corticothérapie et un traitement hormonal thyroïdien substitutif.Conclusion: L’hypophysite est une maladie rare et doit être considérée dans le diagnostic différentiel des désordres hypophysaires durant la grossesse.Mots clés: pseudotumeur inflammatoire, hypophysite, grossesse, IgG4English Title: Pregnancy and hypohpysitis: a case reportEnglish AbstractIntroducion: Hypophysitis is an uncommon sellar condition in which diagnosis and management pose a significant problem, as its clinical manifestation and radiological features are difficult to distinguish from that of pituitary tumors.Case report: We report, in this study, a case of 40 year-old woman presenting with headaches, vision disturbances and vomiting, during her third trimester. Magnetic resonance imaging (MRI) showed a 21 mm mass at the sellar and supra sellar regions, this mass adhered to the optic chiasm. Pathologic examination, after transsphenoïdal surgery revealed fibrous stroma with dense infiltrates of small lymphocytes and plasma cells. Resolution of the symptoms occured after surgery and replacement treatment by steroïds and physiological thyroxine.Conclusion: Hypophysitis is a rare diasease that should be considered in the differential diagnosis of pituitary disorders during pregnancy.Keywords: inflammatory pseudotumor ; hypophysitis ; pregnancy ; IgG

Acute fatal group A Streptococcal primary peritonitis following vaginal delivery

Acute primary peritonitis due to group A streptococci (GAS) is a rare but life-threatening disease most often seen in case of liver cirrhosis or nephrotic syndrome. The specific mechanism of this infection remains unknown and according to the literature hematogenous, lymphatic, retrograde inoculation from the genitourinary tract and translocation of intestinal tract flora have all been proposed. We report a case of a 37-year-old previously healthy patient who presented to the emergency, four days after vaginal delivery, with abdominal pain and septic shock. Acute peritonitis was diagnosed and peritoneal and blood culture revealed group A streptococci. Unfortunately, the patient died within 12 h despite adequate resuscitation and antimicrobials. The present case report highlights the importance of an early diagnosis with an adequate therapy in case of GAS peritonitis after vaginal delivery. Keywords: Group A streptococcus, Primary peritonitis, Streptococcal toxic syndrome, Vaginal deliver