Phytochemical investigation and biological activities of Echium arenarium (Guss) extracts.

The present work was developed to evaluate the in vitro antioxidant, antibacterial, antileishmanial and cytotoxic activities of Echium arenarium (Guss) extracts, and to analyze their phytochemical composition. The highest content of total phenolic compounds was obtained in the ethyl acetate extract which showed the best DPPH scavenging activity and ß-carotene bleaching inhibition (IC50 = 1.1 and 9.94 µg/mL respectively). It also exhibited the highest antibacterial activity against Gram-positive bacteria (L. monocytogenes; S. aureus; MRSA, E. faecalis and B. cereus) and antileishmanial activity against L. major (IC50 = 13.91 ±â€¯0.43 µg/mL) and L. infantum (IC50 = 9.91 ±â€¯0.15 µg/mL). Moreover, the active extract exhibited potent antiamastigote activity (IC50 = 22.48 ±â€¯0.14 µg/mL and 18.59 ±â€¯0.09 µg/mL against L. major and L. infantum respectively). Cytotoxicity studies revealed low toxicity against Raw 264.7 macrophage cell line (IC50 = 145.80 ±â€¯0.84 µg/mL, SI < 10). Luteolin-7-O-glucoside was identified as the major flavonoid component by RP-HPLC analysis. In conclusion, Echium arenarium (Guss) extract was characterized by a wide range of biological activities and could be used as a potential natural anti-infectious drug.

Successful resolution of Hemophagocytic lymphohistiocytosis associated to brucellosis in the adult.

Hemophagocyticlymphohistocytosis (HLH) is a proliferation of histiocytes with importanthemophagocytosisoccurring in different organs such as the spleen and the bone marrow. HLH is now increasingly diagnosed in the context of infections, malignancies and connective tissue diseases. Although brucellosis is an endemic infection in Tunisia, its association with HLH is a very rare condition which should be considered in patients with splenomegaly and cytopenia. Here, we describe brucellosis associated HLH in a 31 year-old man. The patient was admitted to our hospital with fever, sweating, and fatigue. Physical and laboratory findings revealed splenomegaly, pancytopenia, elevated serum transaminases, triglycerides, lactate dehydrogenase, and ferritin, and bone marrow hemophagocytosis. The Brucella agglutination test was positive. The patient improved after treatment with Rifampin and doxycyclin.

Young ischemic stroke in Tunisia: a multicentric study.

PURPOSE: There is wanting data regarding young ischemic stroke in developing countries, especially in Tunisia. The purpose of this study was to investigate risk factors and etiologies of young ischemic stroke in Tunisian and make a comparison with previous reports. MATERIALS AND METHODS: A total of 102 young ischemic stroke patients (15-45 years old) were admitted, between January 1996 and August 2007, to 11 departments of internal medicine in different Tunisian hospitals. The risk factors for stroke were documented and assessed. Diagnosis workup consisted of anamnesis, complete physical examination and extensive laboratory, radiologic, immunologic, neurologic and cardiologic examination. Stroke etiologies were classified according the Trial of ORG 10172 in acute stroke treatment. RESULTS: There were 42 men (41.2%) and 60 women (58.89%) with a mean age at onset of 35.7 years. As regards stroke subtype, large-artery atherosclerosis was diagnosed in 6.9% of cases, cardioembolism in 11.8%, small-vessel occlusion in 8.8%, other determined etiology in 37.3% and undetermined etiology in 35.3%. Concerning the traditional risk factors, smoking (31.4%), hypertension and diabetes mellitus (12.7% for each one) and a family history of stroke (10.8%) were the most common. The mean follow-up period was 30.5 months. CONCLUSIONS: In our study, traditional risk factors were not-so-uncommon in young adults with ischemic stroke suggesting that prevention can go through controlling these factors. Stroke of other determined etiology was the most common among our patients, so that a broad and detailed diagnostic workup is crucial to puzzle out the etiology for more and better stroke prevention.

Characterization of endophytic Bacillus strains from tomato plants (Lycopersicon esculentum) displaying antifungal activity against Botrytis cinerea Pers.

Eighty endophytic bacteria were isolated from healthy tissues of roots, stems, leaves and fruits of tomato plants (Lycopersicon esculentum). Four strains, named BL1, BT5, BR8 and BF11 were selected for their antagonism against Botrytis cinerea, a phytopathogenic fungus responsible of gray mold in several important crops, with growth inhibitory activity ranging from 27 to 53%. Morphological, biochemical, and molecular parameters as 16S rDNA sequencing demonstrated that the selected bacterial strains were related to Bacillus species which are known to produce and secrete a lot of lipopeptides with strong inhibitory effect against pathogen mycelial growth. Electrospray mass spectrometry analysis showed that these strains produced heterogeneous mixture of antibiotics belonging to fengycin and surfactin for BL1 and BT5, to iturin and surfactin for BR8, to bacillomycin D, fengycin and surfactin for BF11. Furthermore, these bacteria exhibited biocontrol potential by reducing the disease severity when tested on detached leaflets. Based on their antifungal activity against Botrytis cinerea, these strains could be used for biological control of plant diseases.

Health related quality-of-life in systemic sarcoidosis in Tunisia.

INTRODUCTION: Sarcoidosis is a systemic granulomatosis that can be associated with large-scale physical and mental disability, affecting the health related quality-of-life (HRQoL) of patients. AIM: To evaluate the HRQoL of tunisian patients with sarcoidosis and to identify the factors that influence it. METHODS: We conducted an analytical, cross-sectional study collecting 31 patients with sarcoidosis according to the ATS/ERS/WASOG criteria. The evaluation of the HRQoL was assessed by two questionnaires in tunisian dialect. The generic score was the Medical Outcome Study 36-Short Form Health Survey (SF-36).The specific score used was the Sarcoidosis Health Questionnaire (SHQ). RESULTS: The HRQoL of our 31 patients was more affected in the three domains of the SHQ compared to the SF-36, which is in favor of the better sensitivity of the SHQ to detect the influence of the extent of sarcoidosis on the HRQoL. Factors associated with more impaired HRQoLwere: age at disease onset, age at interview, comorbidities, altered spirometry results, ocular involvement, chronic cholestasis, splenic nodules, arthralgia, organ count ≥3, lymphopenia and cholestasis at the time of the interview. Taking an immunosuppressant agent, particularly Methotrexate, was associated with HRQoL improvement. The number of relapses was the most correlated factor with an altered HRQoL, and this in several domains. CONCLUSION: For an effective management of patients with sarcoidosis, a bio-psycho-social approach is now necessary in order to assess the real and global impact of the disease and to improve the HRQoL of patients. Disease-specific scores seem more reliable in achieving these goals.

Fulminant lupus pneumonitis complicating systemic lupus erythematosus in the elderly.

Fulminant lupus pneumonitis is a rare complication of SLE. We report a case of 75 years-old male patient with SLE who developed pneumonia and severe respiratory failure requiring mechanical ventilation. Refractory respiratory distress complicating noninfectious fulminant lupus pneumonitis did not respond to methylprednisolone and intravenous immunoglobulin treatment.

Tuberculous tenosynovitis of the hand: A challenging diagnosis.

Tuberculous tenosynovitis of the hand is a very rare condition. Herein, we report the case of tuberculous tenosynovitis of the hand in a 32-year-old woman. We highlight the success of anti tuberculosis drugs alone without resort to surgical treatment.

Early onset of scleromyxedema Arndt-Gottron associated with a monoclonal gammapathy: Successful treatment with intravenous immunoglobulins.

Arndt-Gottron (S-AG) syndrome or scleromyxedema is a scarce disease characterized by a generalized papular and sclerodermoid eruption and systemic manifestations that can lead to significant morbid-mortality. Interesting, S-AG can be associated with a paraprotein. We report an exceptional scleromyxedema case associated with a benign monoclonal gammapathy in an old woman.

[Isolated laryngeal tuberculosis as an uncommon manifestation of extrapulmonary tuberculosis in adults: a case report]. / Tuberculose laryngée isolée de l'adulte: localisation extra pulmonaire exceptionnelle (à propos d'un cas).

Isolated laryngeal tuberculosis is rare and sometimes difficult to diagnose. It is the most common cause of laryngeal granuloma. We here report the case of a 58-year-old man, with no particular past medical history, hospitalized due to paroxysmal laryngeal dyspnea, dysphagia to solid foods and dysphonia evolving for 6 months without other associated signs. Laryngoscopic examination showed polyploid formation masking the glottic floor. Histological examination revealed epithelioid and gigantocellular granuloma, without caseous necrosis. Direct microscopic examination and culture were negative. The diagnosis of isolated laryngeal tuberculosis was made based on the endemicity in our country and the absence of other arguments in favor of another type of granulomatosis. Anti-tuberculosis therapy, combined with oral corticosteroids, was indicated based on the presence of severe upper airway edema and symptoms were resolved after 40 days of treatment.

Acquired Bartter Syndrome in Primary Sjögren Syndrome.

Renal tubular involvement in Sjögren's syndrome (SS) often described with renal tubular acidosis, nephrogenic diabetes insipidus, or rarely with Fanconi syndrome. SS presenting with clinical features of Bartter's syndrome or Gitelman's syndrome is rare. We report a case of a female patient who presented an acquired Bartter syndrome with a primary SS.

Prolonged fever and intra-cardiac thrombosis revealing Behçet's disease.

BACKGROUND: Prolonged fever (PF) is a challenging problem for physicians since it can be the first manifestation of a large variety of pathologies. Exceptionally, intra-cardiac thrombus (ICT) could explain PF and reveal Behçet's disease (BD). We are reporting a 45-year-old man with BD who has these unusual manifestations. CASE REPORT: A 45-year-old man presented with PF and inflammatory biological syndrome during a few months. Echocardiography showed an inhomogeneous and mobile mass in the left auricle. During his hospitalization, the patient had multiple oral aphtosis. The angioscanner showed a sacciform aneurysm of the coeliac trunk. The diagnosis of BD was retained and he was treated with high doses of steroids and cyclophosphamide with a favorable follow-up. CONCLUSION: The search for BD should be systematic in view of any suggestive manifestation of severe cardiovascular complications like ICT especially in a young adult man from a high endemicity region.

[Dermatomyositis and Panniculitis: the function of immunoglobulins]. / Dermatomyosite et panniculite: place des immunoglobulines.

Panniculitis is an inflammatory disease of subcutaneous adipose tissue which is rarely associated with dermatomyositis. It can occur before, after or simultaneously with muscle damage. In most cases, the evolution of panniculitis and of other dermatomyositis affections is favorable with corticosteroids and/or immunosuppressants. We report the case of a 48 year-old patient who developed panniculitis lesions 2 months before having muscular signs. Skin involvement was resistant to corticosteroid treatment associated with immunosuppressants drugs. This led to the use of polyvalent immunoglobulin treatment improving both skin and muscle damage.

Sarcoidosis with heart involvement: a rare association of terrible prognosis, a report of two cases.

Sarcoidosis is a multisystemic disorder of unknown etiology which is characterized by the formation of non-caseating granulomas in involved tissues. Cardiac involvement is one of the least common manifestations and it can occur at any point of time during the course of sarcoidosis. Here we present the case of 2 patients with known sarcoidosis who develop cardiac abnormalities in the absence of known primary cardiac cause. In our report, we would like to draw attention to the importance of considering heart involvement in any case with systemic sarcoidosis especially in young age.