15 research outputs found

    Structural and Functional Abnormalities in the Caudate Nucleus of Schizophrenic Patients with and without Obsessive Symptoms

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    Background: Obsessive\u2013compulsive symptoms (OCS) have been frequently described in schizophrenic populations. There is a controversy on whether this co-occurrence is more than just comorbidity or represents a distinct subgroup in schizophrenia. Aim: The aim of this study was to investigate whether there are possible underlying structural and functional differences between schizophrenic patients with and those without OCS. Patients and methods: Participants in this study were divided into three groups: 20 patients having schizophrenia with OCS; 20 patients having schizophrenia without OCS (both were diagnosed according to DSM-IV-TR); and 20 matching controls. All participants underwent an MRI for volumetric measurement of the caudate nucleus and a magnetic resonance spectroscopy to measure choline (Cho), creatine, and N-acetyl aspartate (NAA) in the caudate nucleus. Results: Caudate volume was found to be reduced in schizophrenic patients with or without OCS (P 640.05). Magnetic resonance spectroscopy findings showed that schizophrenic patients without OCS had significant increase in Cho concentration (P 640.05), but average NAA concentration. In contrast, schizophrenic patients with OCS had significant reduction in NAA concentration (P 640.05) with average Cho concentration. Conclusion: Schizophrenic patients with OCS may have an atypical set of neuroradiological characteristics that would specifically categorize it within the schizophrenia spectrum

    Mitigation of Salinity Stress Effects on Broad Bean Productivity Using Calcium Phosphate Nanoparticles Application

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    Water salinity is one of the major abiotic stresses, and the use of saline water for the agricultural sector will incur greater demand in the coming decades. Recently, nanoparticles (NPs) have been used for developing numerous plant fertilizers as a smart and powerful form of material with dual action that can alleviate the adverse effects of salinity and provide the plant with more efficient nutrient forms. This study evaluated the influence of calcium phosphate NPs (CaP-NPs) as a soil fertilizer application on the production and bioactive compounds of broad bean plants under salinity stress. Results showed that salinity had deleterious effects on plant yield with 55.9% reduction compared to control. On the other hand, CaP-NPs dramatically improved plant yield by 30% compared to conventional fertilizer under salinity stress. This improvement could be attributed to significantly higher enhancement in total soluble sugars, antioxidant enzymes, proline content, and total phenolics recorded use of nano-fertilizer compared to conventional use under salt stress. Additionally, nano-fertilizer reflected better mitigatory effects on plant growth parameters, photosynthetic pigments, and oxidative stress indicators (MDA and H2O2). Therefore, our results support the replacement of traditional fertilizers comprising Ca2+ or P with CaP-nano-fertilizers for higher plant productivity and sustainability under salt stress

    The Effects of Root Aeration and Different Soil Conditioners on the Nutritional Values, Yield, and Water Productivity of Potato in Clay Loam Soil

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    A field study was conducted in 2016–2017 and 2017–2018 to evaluate the effects of air injection into an irrigation stream during the subsurface drip irrigation (SDI) process on the nutritional values and productivity of potato grown in clay loam soil. Two irrigation treatments (non-aerated and aerated) and six fertilizer applications (chicken, cow, rabbit, compost, mineral, and chicken + biochar) were compared. In the first growing season, the maximum yield occurred under aerated treatment with cow fertilizer (36.25 ton ha−1), while the minimum yield occurred under non-aerated treatment with chicken fertilizer (24.00 ton ha−1). On the other hand, the maximum and minimum yields in the second growing season were 35.00 and 24.74 ton ha−1 under aerated and non-aerated treatments with cow fertilizer, respectively. Maximum water productivity was achieved under aerated treatment with cow fertilizer (10.04 and 9.13 kg m−3 for the first and second growing seasons, respectively), while minimum water productivity was achieved under the non-aerated treatment with chicken + biochar fertilizer (5.91 and 5.26 kg m−3 for the first and second growing seasons, respectively). Fertilization using aerated treatment yielded the best results and the highest coupling after air injection, compared with the traditional methods of adding soil fertilizer without aeration. The plant growth parameters significantly increased following aeration relative to non-aerated treatments for all fertilizer applications in both growing seasons. Air injection into the soil for potatoes, unsurprisingly, not only benefitted the crop by increasing the soil–air exchange rate but also promoted water infiltration rates and nutrient absorption and reduced drainage water, thus increasing water productivity and reducing the overall irrigation requirements

    Irrigation scheduling for green beans grown in clay loam soil under a drip irrigation system

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    An experimental field trial was conducted at El-Ayat, El-Giza Governorate, Egypt (latitude 30°11´13"N, longitude 31°41´38"E, and mean altitude 74 m above sea level) during the growing season of 2017 and 2018. The study aimed to assess the suitable irrigation interval and applied water volume for drip-irrigated green beans, based on water production functions and water use–yield relationships. The field trial was arranged in a split-plot design with 3 irrigation intervals (F1, F2 and F3 irrigation events, once every 1, 2 and 3 days, respectively) and 3 irrigation regimes (I1: 1.00, I2: 0.80, and I3: 0.60 of the crop evapotranspiration, ETc). The results showed that the yield and water use efficiency (WUE) increased with increasing irrigation interval. Maximum and minimum yield of 12 030 and 4 879 kg∙ha-1 were obtained in F1I2 and F3I3 treatment, respectively, in the winter season of 2017, and were 12 364 and 4 678 kg∙ha-1 for the corresponding treatments in the winter season of 2018. WUE ranged from 56.55 kg∙ha-1∙mm-1 in F1I2 to 23.80 kg∙ha-1∙mm-1 in F3I3. Plant growth parameters were significantly affected by the irrigation schedule. The highest plant growth parameters were obtained under F1 and F2. The seasonal yield response factors (ky) were 0.845 and 0.856 in 2017 and 2018, respectively. The relationship between yield and seasonal crop ET was best explained by a power function for all irrigation schedules for both growing seasons. It is recommended that the F1I2 irrigation treatment is the suitable one for green beans grown under field conditions, in order to achieve the highest yield and WUE

    Effect of Titanium and Vanadium on Antioxidants Content and Productivity of Red Cabbage

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    The present work studied the effect of foliar spray of different concentrations of titanium (Ti, applied as titanium dioxide) and vanadium (V, applied as vanadium pentoxide) on growth, chemical composition, antioxidant contents, antioxidant enzymes, antioxidant capacity, yield and quality criteria of red cabbage plants. For this purpose, 2.0, 4.0 and 6.0 mg L−1 of Ti and V were used to treat red cabbage plants. The control plants were treated with tap water. Our results showed that plants treated with 4.0 mg L−1 of Ti recorded the highest values of plant growth and bioactive compounds, while antioxidant capacity was decreased compared to the other treatments. In addition, plants treated with Ti and V at 2.0 and 4.0 mg L−1, respectively, showed higher values of all of the growth, yield, non-enzymatic antioxidants and antioxidants enzymes’ parameters compared to the untreated plants. Based on the obtained results, it could be concluded that the low concentrations of both Ti and V (2.0 and 4.0 mg L−1) were able to enhance red cabbage growth and yield, as well as the antioxidant contents, enzymes and capacity

    Effect of Titanium and Vanadium on Antioxidants Content and Productivity of Red Cabbage

    No full text
    The present work studied the effect of foliar spray of different concentrations of titanium (Ti, applied as titanium dioxide) and vanadium (V, applied as vanadium pentoxide) on growth, chemical composition, antioxidant contents, antioxidant enzymes, antioxidant capacity, yield and quality criteria of red cabbage plants. For this purpose, 2.0, 4.0 and 6.0 mg L−1 of Ti and V were used to treat red cabbage plants. The control plants were treated with tap water. Our results showed that plants treated with 4.0 mg L−1 of Ti recorded the highest values of plant growth and bioactive compounds, while antioxidant capacity was decreased compared to the other treatments. In addition, plants treated with Ti and V at 2.0 and 4.0 mg L−1, respectively, showed higher values of all of the growth, yield, non-enzymatic antioxidants and antioxidants enzymes’ parameters compared to the untreated plants. Based on the obtained results, it could be concluded that the low concentrations of both Ti and V (2.0 and 4.0 mg L−1) were able to enhance red cabbage growth and yield, as well as the antioxidant contents, enzymes and capacity
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