Antiulcerogenic and antioxidant activities of Plantago ovata ethanolic extract in rats / Atividade antiulcerogênica e antioxidante do extrato etanólico de Plantago ovata em ratos

This study aimed to determine the antiulcerogenic and antioxidant activities of Psyllium (Plantago ovata Forssk) seed ethanolic extract in rats. We assessed the antioxidant potential using free radical scavenging on DPPH, ß-carotene bleaching activity, ferric reducing power, and hydroxyl radical scavenging activity. In the antiulcerogenic study, pre-treatment with Plantago ovata seeds ethanolic extract (POE) (400 mg/kg b.wt) significantly protected against ethanol-induced gastric ulcer in rats by decreasing the ulcer index value and preserving the integrity of the gastric mucosa. The oxidative stress status in the stomach tissues showed a significant increase in the antioxidant enzyme levels of superoxide dismutase, catalase, and glutathione peroxidase with a significant decrease in lipid peroxidation during pre-treatment with POE. In conclusion, the POE protects against gastric ulcer due to its antioxidant potential and presence of bioactive molecules.

O presente estudo teve como objetivo determinar as atividades antiulcerogênica e antioxidante das sementes de Psyllium (Plantago ovata Forssk) em ratos. O potencial antioxidante foi avaliado utilizando o método do sequestro do radical livre DPPH, autooxidação do ß-caroteno, poder redutor de ferro e atividade de sequestro do radical hidroxila. No estudo antiulcerogênico, o pré-tratamento com o extrato etanólico das sementes de Plantago ovata (POE) (400 mg/Kg b.wt) reduziu a úlcera gástrica induzida pelo etanol em ratos, diminuindo o valor do índice de úlcera e preservando a integridade da mucosa gástrica. O estudo do estresse oxidativo nos tecidos estomacais mostrou um aumento significativo dos níveis das enzimas antioxidantes superóxido dismutase, catalase e glutationa peroxidase, com uma diminuição significativa da peroxidação lipídica enquanto pré-tratamento com POE. Em conclusão, o POE protege contra úlcera gástrica devido aos seus potenciais antioxidantes e à presença de moléculas bioativas.

Antiulcerogenic and antioxidant activities of Plantago ovata ethanolic extract in rats

Abstract This study aimed to determine the antiulcerogenic and antioxidant activities of Psyllium (Plantago ovata Forssk) seed ethanolic extract in rats. We assessed the antioxidant potential using free radical scavenging on DPPH, -carotene bleaching activity, ferric reducing power, and hydroxyl radical scavenging activity. In the antiulcerogenic study, pre-treatment with Plantago ovata seeds ethanolic extract (POE) (400 mg/kg b.wt) significantly protected against ethanol-induced gastric ulcer in rats by decreasing the ulcer index value and preserving the integrity of the gastric mucosa. The oxidative stress status in the stomach tissues showed a significant increase in the antioxidant enzyme levels of superoxide dismutase, catalase, and glutathione peroxidase with a significant decrease in lipid peroxidation during pre-treatment with POE. In conclusion, the POE protects against gastric ulcer due to its antioxidant potential and presence of bioactive molecules.

Resumo O presente estudo teve como objetivo determinar as atividades antiulcerogênica e antioxidante das sementes de Psyllium (Plantago ovata Forssk) em ratos. O potencial antioxidante foi avaliado utilizando o método do sequestro do radical livre DPPH, autooxidação do -caroteno, poder redutor de ferro e atividade de sequestro do radical hidroxila. No estudo antiulcerogênico, o pré-tratamento com o extrato etanólico das sementes de Plantago ovata (POE) (400 mg/Kg b.wt) reduziu a úlcera gástrica induzida pelo etanol em ratos, diminuindo o valor do índice de úlcera e preservando a integridade da mucosa gástrica. O estudo do estresse oxidativo nos tecidos estomacais mostrou um aumento significativo dos níveis das enzimas antioxidantes superóxido dismutase, catalase e glutationa peroxidase, com uma diminuição significativa da peroxidação lipídica enquanto pré-tratamento com POE. Em conclusão, o POE protege contra úlcera gástrica devido aos seus potenciais antioxidantes e à presença de moléculas bioativas.

Antiulcerogenic and antioxidant activities of Plantago ovata ethanolic extract in rats.

This study aimed to determine the antiulcerogenic and antioxidant activities of Psyllium (Plantago ovata Forssk) seed ethanolic extract in rats. We assessed the antioxidant potential using free radical scavenging on DPPH, ß-carotene bleaching activity, ferric reducing power, and hydroxyl radical scavenging activity. In the antiulcerogenic study, pre-treatment with Plantago ovata seeds ethanolic extract (POE) (400 mg/kg b.wt) significantly protected against ethanol-induced gastric ulcer in rats by decreasing the ulcer index value and preserving the integrity of the gastric mucosa. The oxidative stress status in the stomach tissues showed a significant increase in the antioxidant enzyme levels of superoxide dismutase, catalase, and glutathione peroxidase with a significant decrease in lipid peroxidation during pre-treatment with POE. In conclusion, the POE protects against gastric ulcer due to its antioxidant potential and presence of bioactive molecules.

CtIP fusion to Cas9 enhances transgene integration by homology-dependent repair.

In genome editing with CRISPR-Cas9, transgene integration often remains challenging. Here, we present an approach for increasing the efficiency of transgene integration by homology-dependent repair (HDR). CtIP, a key protein in early steps of homologous recombination, is fused to Cas9 and stimulates transgene integration by HDR at the human AAVS1 safe harbor locus. A minimal N-terminal fragment of CtIP, designated HE for HDR enhancer, is sufficient to stimulate HDR and this depends on CDK phosphorylation sites and the multimerization domain essential for CtIP activity in homologous recombination. HDR stimulation by Cas9-HE, however, depends on the guide RNA used, a limitation that may be overcome by testing multiple guides to the locus of interest. The Cas9-HE fusion is simple to use and allows obtaining twofold or more efficient transgene integration than that with Cas9 in several experimental systems, including human cell lines, iPS cells, and rat zygotes.

WITHDRAWN: Allergen specific immunotherapy induced multi-organ failure.

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Incidence and risk factors for post-renal transplant diabetes mellitus.

INTRODUCTION: Posttransplant diabetes mellitus (PTDM) is a common, serious complication of renal transplantation. The aim of this retrospective study was to estimate the incidence and to identify potential factors predisposing to PTDM. PATIENTS AND METHODS: We evaluated 296 adult nondiabetic patients who underwent kidney transplantation at our center. PTDM was defined according to 2003 international consensus guidelines. Potential factors predisposing to PTDM were analyzed individually and simultaneously using a logistic regression model. RESULTS: Over 2054.5 years of cumulative follow-up, 51 patients (17.2%) developed diabetes corresponding to an annual incidence of 2.5%. PTDM was diagnosed after a median of 2.9 months (range: 0.2-168). The mean age of affect individuals was 33.3±7.4 years. Patients with PTDM were significantly older (P<.0005) and showed an higher body mass index (BMI; P<.004). Univariate analysis revealed that age, BMI, family history of diabetes, vascular nephropathy, and hepatitis C infection were associated with PTDM. Multivariate analysis rescaled the roles of age (relative risk [RR]=1.046/y; P<.04), BMI (RR=1.107/kg/m2, P<.05), vascular nephropathy (RR=7.06, P<.03), and hepatitis C infection (RR=2.72, P<.03) as independent factors predisposing to PTDM. CONCLUSION: Among our relatively young kidney transplant recipients, in whom only 8% received tacrolimus, PTDM was a frequent complication. We suggest that the use of oral glucose tolerance tests to screen patients identifies those predisposed to develop this complication.

[Variations of troponin T in chronic hemodialysis patients: study of 52 cases]. / Variation de la troponine Tc chez les hémodialyses chroniques: etude a propos de 52 cas.

BACKGROUND: Patients with severe renal dysfunction have unexplained elevated serum concentrations of cardiac troponin T. AIM: Study the frequency of elevated cTnT in hemodialysis patients and investigated whether cTnT is elevated. METHODS: The patient population consisted of 52 patients on maintenance hemodialysis and 20 healthy subjects. cTnT was measured before and after hemodialysis by using immunoenzymatic method. cTnT were undetectable in 7 cases(< 0.01 ng/ml) and higher than normal range (up to 0.1 ng/ml) in 9 cases. 32 cases have a level of cTnT > 0.01 and < 0.1 ng/ml. In addition, TnTc levels are significantly associated with cardiac dysfunction (p < 0.05) and inflammation (p 0.01). RESULTS: After hemodialysis sessions, TnTc was less than 0.01 ng/1 in 11 patients (21.2%), between 0.01 and 0.1 ng/ml in 32 subjects (61.5%) and greater than 0.1 ng/ml in 9 subjects (17.3%). In the control group, only 1 subject (5%) had a rate of TnTc between 0.01 and 0.1 ng/ml, whereas it was less than 0.01 ng/ml for all others. We aim a statistically significant positive correlation between the rate of TnTc and heart failure (p < 0.05) on the one hand and serum CRP (p < 0.01) on the other. CONCLUSION: The causes of elevated cTnT levels in hemodialysis patients was multiple: cardiac dysfunction, left ventricular dysfunction and inflammation.

[Twenty-two cases of neuromeningeal cryptococcosis in Tunisia]. / Vingt-deux cas de cryptococcose neuromeningée en Tunisie.

Neuromeningeal cryptococcosis is a serious infection witch occurs essentially in immunodepressed patients and especially AIDS patients. We report 22 cases of cryptococcosis meningitis confirmed by the parasitology laboratory, in the Tunis Rabta hospital, over a 16-year period. Sixteen patients were HIV infected and six were not HIV infected. The clinical examination documented fever and headache as well as focal neurological signs especially in HIV infected patients. The mycological examination of CSF proved the diagnosis of neuromeningeal cryptococcosis in all cases. The first line treatment was Amphotericin B in 13 cases, Amphotericin B and 5Fluorocytosine in three cases, and fluconazole in six cases. 14 patients died, seven recovered, and one was lost to follow-up.

[Unusual presentation of pulmonary alveolar proteinosis]. / Lipoprotéinose alvéolaire pulmonaire de présentation inhabituelle.

Pulmonary alveolar proteinosis is a rare disease characterized by the accumulation of granular lipoproteinaceous material within the alveoli; the interstitium is preserved. We report the case of a 27-year-old patient hospitalized for exploration of asymptomatic bilateral interstitial syndrome. Neither the radiographic signs nor the aspect of bronchoalveolar lavage was typical. The diagnosis was confirmed by pathology examination of surgical lung biopsy specimen which revealed lesions of interstitial fibrosis and cholesterol granulomas in association with pulmonary alveolar proteinosis. Since there was no functional deterioration, therapeutic abstention was decided.

[Renal involvement in ankylosing spondylitis: concerning 210 cases]. / Les manifestations rénales de la spondylarthrite ankylosante: à propos de 210 cas.

PURPOSE: To define the epidemiology, clinical, biological and histological features of renal diseases in ankylosing spondylitis, ginving special attention to unusual forms. METHODS: We retrospectively reviewed the medical record of 28 cases with renal involvement among 210 cases of ankylosing spondylitis seen over a 27 year period who met the Amor criteria. RESULTS: Twenty-eight of 210 patients (13,3%) presented one or more signs of renal involvement: macroscopic hematuria (4 patients), microscopic hematuria (8 patients), proteinuria (15 patients), nephrotic syndrome (6 patients), decreased renal function (13 patients). Secondary renal amyloidosis and nephrolithiasis (8 patients) were the most common cause of renal involvement in ankylosing spondylitis followed by IgA nephropathy (3 patients). CONCLUSION: The funding of renal abnormalities in 13,3% of our patients suggests that in this illness evidence of renal involvement should be actively investigated in ankylosing spondylitis.

[Retroperitoneal fibrosis]. / La fibrose rétropéritonéale.

OBJECTIVE: We studied the clinical, therapeutic and progressive characteristics of retroperitoneal fibrosis. METHODS: We analysed the observations of retroperitoneal fibrosis diagnosed between 1980 and 2002 in our hospital, from the summaries of 15 patients exhibiting retroperitoneal fibrosis (RPF). Therapeutical supervision was based on biology and radiology. RESULTS: There were 11 men and 4 women with a mean age of 44.5 years ranging from 28-64 years. Pain was predominantly lumbar or abdominal in all patients. An inflammatory syndrome was observed in all patients and renal failure in 11. Radiological examinations revealed single or bilateral in 14 cases and the fibrosis plaque in 13 cases. Treatment consisted in corticosteroids alone in 9 patients, surgery alone in 3 cases and surgery with corticosteroids in 3 patients. Ten relapses (range: 1-5) occurred in 4 patients when corticosteroids were stopped. After a mean follow-up of 36 months (range:18 days-11 years), one death was observed, 12 patients had normal renal function and 2 patients had persistent moderate renal failure. CONCLUSION: This study confirms the rarity of retroperitoneal fibrosis, the difficulty in its diagnosis, the frequency of pain, inflammatory syndrome and renal failure. Corticosteroids are efficient and regular follow-up is required.