The Plant Growth-Promoting Ability of Alfalfa Rhizobial Strains Under Nickel Stress.

The growth and nutrient balance of legumes can be disrupted in soils with increased nickel (Ni) concentrations. The inoculation of legumes with rhizobia, symbiotic nitrogen-fixing bacteria, can be used for the alleviation of trace metal stress in plants. This study evaluated the Ni tolerance of alfalfa rhizobia isolates and some plant growth-promoting traits in the presence of Ni: indole-3-acetic acid (IAA) production, Ni biosorption potential, and the effect of rhizobia on alfalfa ( L.

Matrix metalloproteinases 2 and 9 fail to influence drug-induced neuroapoptosis in developing rat brain.

Matrix metalloproteinases (MMPs) play an essential role in tissue repair, cell death, and morphogenesis. The aim of the present study was to investigate potential involvement of selected MMPs in the pathogenesis of neuronal apoptosis induced by the NMDA antagonist MK-801 (dizocilpine) or the GABA(A) agonist phenobarbital in infant rats, transgenic rats overexpressing MMP-9 and MMP-9 knockout mice. Seven-day-old rats or knockout mice received intraperitoneal injections of MK-801, 1 mg/kg, or phenobarbital, 50 mg/kg.

Clinical predictors of early second event in patients with clinically isolated syndrome.

This study aimed to determine the predictors of increased risk of a second demyelinating event within the first year of an initial demyelinating event (IDE) suggestive of early multiple sclerosis (MS). Patients with MS or clinically isolated syndrome (CIS) seen at the UCSF MS Center within one year of the IDE were studied. Univariate and multivariate Cox models were used to analyze predictors of having a second event within 1 year of the IDE.