Lactase has excellent applications in dairy industry and commercially this enzyme is produced from bacterial sources but not in high yields. In this work, the production of lactase was improved by designing of nutrient components in fermentation medium by one factor at a time. Lactose and yeast extract were selected as preferable carbon and nitrogen sources for lactase production with tryptopha...

About 5% of normal subjects fail to produce increased hydrogen breath concentration after ingestion of the non-digestible carbohydrate lactulose (low hydrogen producers). The existence of low hydrogen producers limits the diagnostic use of hydrogen (H2) breath tests. We studied the effects of lactulose and of magnesium sulphate (MgSO4) pretreatment on stool-pH and on hydrogen exhalation after o...

Introduction: The presence of sulfates on the surface of Mars was indicated by a strong Mg-S correlation in the fluorescence data obtained by the Viking landers [1]. Sulfates were subsequently identified as being present in the soil at the Pathfinder landing site at a concentration of ~ 10 % MgSO4 [2]. Data from the Opportunity rover indicates that sulfates of probable evaporite origin are pres...

Background and objective: The inappropriate response of hemodynamic parameters to endotracheal intubation (ETI) can increase perioperative and postoperative morbidity and mortality. Various pharmacological methods have been aimed to suppress this pressor response but the search for the ideal drug for attenuation of cardiovascular response during laryngoscopy and tracheal intubation continues. D...

introduction: renal colic can be managed by preventing the contraction movements of ureter muscles. by reducing acetylcholine in the nerve terminals, magnesium sulfate could be effective in this regard. the aim of this study is to investigate the effect of magnesium sulfate on acute renal colic pain relief. method: the present study was a double-blind clinical trial in which the patients suffer...

The composite gelling system of chlorine and magnesium thioxide was prepared by mixing different mass fractions sulfate solution into MOC. Detailed studies regarding the influences replacing chloride on setting time, compressive strength, water resistance oxychloride cement (MOC) have been carried out in this paper. phase composition micro morphology hydration products mixed were analyzed XRD S...

BACKGROUND AND OBJECTIVES High concentrations of local anesthetics may be neurotoxic for diabetic patients. Additive perineural administration of magnesium was reported to decrease the consumption of local anesthetics for nerve block. It was hypothesized that MgSO4 added to dilute ropivacaine was equianalgesic to more concentrated ropivacaine for toe amputations in diabetic patients. METHODS ...

OBJECTIVE To investigate the effects of two tocolytics, nifedipine and magnesium sulfate, on Doppler indices in maternal and fetal vessels. MATERIALS AND METHODS We recruited 100 pregnant women with preterm birth between 24-36 gestational weeks who were admitted to our tertiary center over a two-year period. Patients were allocated to nifedipine (n=49) and magnesium sulfate (n=51) groups and ...

background: nephrotoxicity is one of the major side-effects of cisplatin that has been seen in about 20% of treated patients. the aim of this study was to assess the effectiveness of a forced hydration protocol comprised of isotonic saline, potassium chloride (kcl) and magnesium sulfate (mgso4) on prevention of cisplatin nephrotoxicity. methods: this cross sectional prospective study was perfor...

In this study, the interference effects of Al3+, Mg2+, Cl- and SO4(2-) ions on the determination of manganese by graphite furnace atomic absorption spectrometry (GFAAS) were investigated. At first, the interferences caused by Al2(SO4)3, AlCl3, MgCl2 and MgSO4, which are the most possible major compounds for the combinations of the ions mixed, were individually considered. Then, the effects caus...