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41.
Echinococcosis is very frequent helminthic infection in human being. The disease is endemic in Iran and particularly in its northwestern region, East Azerbaijan. The objective of this study was to study demographics of patients with cystic echinococcosis in East Azerbaijan; as well as to repot the sites of involvements. In this cross-sectional study, 318 patients with surgical and nonsurgical cystic echinococcosis were recruited from three referral centers in Tabriz within a 10-year period of time. The patients' demographics (age and gender) and the site of infection were investigated. Among the patients, females were predominant (57.5 vs. 42.5%). The mean age of patients was 32.59 +/- 18.47 (range: < 1-87) years and the most frequently age group was 20-30 years (23.6%), followed by the age groups of 30-40 years (21.7%), 10-20 years (14.2%), 40-50 years (11.9%), 50-60 years (11.3%), < 1 year (6%), 60-70 years (4.7%), 1-10 years (4.1%) and finally, > 70 years (2.5%). The lung was the most frequently infected organ (48.1%), followed by the liver (28.9%), gallbladder (3.5%), spleen and kidney (each one in 2.2%), abdomen, intestine, pleura, bronchus and mediastinum (each one in 1.6%), chest wall and heart (each one in 1.3%), brain, pericardium, facial sinus, pancreas and esophagus (each one in 0.6%) and the ovary, uterus, axillary region, pelvis and femur (each one in 0.3%). In conclusion, this study showed that the patients with hydatid cysts in East Azerbaijan Province are mainly females in the age group of 20-40 years. The lung and liver are the major sites of infection in these patients. 相似文献
42.
Tawba Kalai Donia Bouthour Jamel Manai Leila Bettaieb Ben Kaab Houda Gouia 《Archives of Agronomy and Soil Science》2016,62(6):892-904
The present study investigated the possible mediator role of salicylic acid (SA) in alleviating cadmium (Cd) toxicity during the germination stage of barley. The exposure of barley seedling to increasing Cd concentrations (25, 50 and 100 µM) during early stages of their establishment, caused a gradual decrease in vigour index, root length, α-amylase, acid phosphatase, alkaline phosphatase activities in endosperms and mitotic index of the root tip. Seed pretreatment with 600 µM SA partially alleviated the negative effects of Cd on germination parameters and increased the hydrolytic enzyme activities and mitotic index. Cadmium treatment increased Cd accumulation in roots. Furthermore, results showed that compared to the cadmium treatment applied alone, SA pretreatment of the seeds did not influenced the Cd concentration in the roots. These results suggest that SA plays a positive role in barley-seed germination and early seedling growth by protecting it against Cd toxicity by moderating its toxic effect on the mobilization of organic reserves. 相似文献
43.
Brauns’ lignins present in the methanol extracts of fresh birch (Betula pendula) xylem and of sawn birch board subjected to vacuum drying were characterized by 1H and 13C NMR spectroscopy (1D and 2D), IR spectroscopy, gel permeation chromatography (GPC) and colour measurements (CIELab) in order to find out whether Brauns’ lignin could contribute to the colour change of sawn timber that occurred during vacuum drying. The two Brauns’ lignin samples contained about equal amounts of syringylpropane and guaiacylpropane units linked with β-O-4 and β–β side-chain structures. Molecular weight of the Brauns’ lignin of vacuum-dried birch board (acetylated: 5,200 g mol−1) was higher than that of the Brauns’ lignin of fresh birch wood (acetylated: 4,400 g mol−1). The Brauns’ lignin of vacuum-dried wood was also clearly darker and more prominently yellow and red;
between the Brauns’ lignin samples was 23.59. The differences in the molecular weights and colours suggest that the Brauns’ lignin underwent a chemical change during vacuum drying of the wood and that this change may have affected the colour of the wood. 相似文献
44.
Morad Jafari Peyman Norouzi Mohammad Ali Malboobi Behzad Ghareyazie Mostafa Valizadeh Seyed Aboulghasem Mohammadi Mozhgan Mousavi 《Euphytica》2009,165(2):333-344
Two diploid sugar beet genotypes of agronomical importance were transformed using Agrobactrium tumefaciens harboring pBI35Scry containing a synthetic cry1Ab gene. Leaf blade with attached shoot bases, a highly regenerative tissue, were used as explant substratum for transformation.
PCR screening with cry1Ab-specific primers showed the presence of transgene in more than 50% of the regenerated kanamycin-resistant plants after treatment
with the antibiotic. A transformation rate of 8.8–12.2% (depending on genotype) was achieved as revealed by genomic DNA dot
blotting. The intact integration of transgene cassette into the genome was furthermore confirmed by Southern blot analysis.
The expression of the cry1Ab gene encoding a truncated endotoxin (67 kDa) at about 0.1% of total soluble protein was achieved in the leaves of transgenic
plants as shown by Western blot analysis. Bioassays under in vitro conditions with Spodoptera littoralis, one of the most important pests in sugar beet fields, demonstrated enhanced resistance against this pest. The inheritance
of the inserted transgene was confirmed in F1 plants obtained through crossing of T0 plants with a cytoplasmic male sterile line. Transgenic plants are currently grown in a greenhouse and will be subjected
to further bioassay analyses against other lepidopteran pests of sugar beet. 相似文献
45.
Carine de Freitas Souza Cristine Rampelotto Bruno Bianchi Loureiro Fernanda Alves Pereira Adriane Erbice Bianchini Carine Dahl Corcini Antonio Sergio Varela Junior Tatiana Emanuelli Leila Picolli da Silva Sílvio Teixeira da Costa Kalyne Bertolin Monique Tomazele Rovani Paulo Bayard Dias Gonçalves Berta Maria Heinzmann Bernardo Baldisserotto 《Fish physiology and biochemistry》2018,44(4):1253-1264
In aquaculture, nutrition and supplemented diets have been shown to affect broodstock reproductive performance. In this study, we investigated the effects of dietary supplementation with Cymbopogon flexuosus essential oil (CFEO) microcapsules on reproductive-related parameters in silver catfish (Rhamdia quelen) male broodfish. Adult male broodstocks were separated into three groups according to the concentrations of supplemented CFEO (0.0?=?control; 1.0 or 3.0 mL per kg of diet). After 20 days under experimental conditions, the animals were euthanized and the gonads were harvested for gonadosomatic index, sperm analysis, oxidative stress, and histopathology; testosterone levels were measured in the plasma; gene expression of prl, smtl, pomca, and pomcb was assessed in the pituitary gland by real-time PCR. The results showed no alterations on reproductive parameters in R. quelen males treated with Cymbopogon flexuosus essential oil compared to the control-diet animals. In conclusion, CFEO microcapsules supplied for 20 days in the concentrations of 1.00 or 3.00 mL per kilogram of diet did not affect the reproduction criteria evaluated in this study in male silver catfish. 相似文献
46.
Shahla Mahdavi Esmaeil Fallahi Majid Shokrpour Leila Tabrizi 《Journal of plant nutrition》2017,40(16):2248-2258
Water shortage is a critical issue worldwide, and it may adversely impact non-food landscape plants. Thus, the impact of two levels of evapotranspiration-based (ETc) water stresses and two biostimulants consisting of s-abscisic acid (s-ABA) and glycine betaine (GB), and their combined applications on perennial ryegrass (Lolium perenne) under climatic and soil conditions of the Intermountain West, USA, were studied. Clippings with 50% ETc had higher percentage dry weight (DW) but lower fresh weight (FW) and chlorophyll index (CI) than those with 75% ETc. The performance rating of plots with 75% ETc was significantly higher (better) than those receiving the 50% ETc treatment. Clippings with the 75% ETc treatment had higher concentrations of nitrogen (N), nitrate, phosphorous (P), sulfur (S), potassium (K), sodium (Na), and copper (Cu) than those with the 50% ETc treatment. Considering all mineral nutrient values, CIs, and performance ratings, we conclude that the application of 75% ETc is sufficient for maintaining a healthy turfgrass with a satisfactory appearance, while we can save 25% water as compared to the application of water at 100%. The application of biostimulants had no effect on clipping or root FWs, DWs, or percentage DWs. Clippings from GB-treated turfgrass had significantly higher N than those from all other biostimulants or non-treated control. Additionally, clippings from the plots with the GB treatment had significantly higher S, K, and Cl but lower Zn. Clippings from the s-ABA-treated turfgrass also had significantly higher K than those in non-treated control. Average performance ratings in s-ABA and GB, and s-ABA and GB were significantly higher than those in non-treated control, underscoring the values of these biostimulants in the reduction of drought stress. 相似文献
47.
Carla D. Marassi Jim McNair John Pollock Paula Ristow Leila S. Fonseca Walter M.R. Oelemann Walter Lilenbaum 《Comparative immunology, microbiology and infectious diseases》2010,33(6):485-489
In order to demonstrate the potential to distinguish paratuberculosis (PTB) from bovine tuberculosis infection (TB), ELISAs with M. bovis-specific MPB70 or MPB83 as capture antigens were developed and tested on two groups of cattle: Group A comprised 23 animals positive for Mycobacterium avium paratuberculosis (Map) and TB free. Group B comprised 48 animals from a Map free herd during the previous 5 years, but confirmed as tuberculous by positive results on PPD testing and M. bovis culture. Results demonstrated a significant difference (p < 0.01) between reactivity of sera from these groups, encouraging the study of purified proteins to differentiate between both diseases. 相似文献
48.
49.
Alireza Shirpoor Leila Norouzi Samira Nemati Mohammad Hasan Khadem Ansari 《Iranian Biomedical Journal》2015,19(2):117-123
Background:
Hyperlipidemia and oxidized-low-density lipoproteins (Ox-LDL) are important independent cardiovascular risk factors that have been shown to stimulate vascular smooth muscle cell (VSMC) proliferation. The purpose of the present study was to investigate the effect of vitamin E on Ox-LDL, lipid profile, C-reactive protein (CRP), and VSMC proliferation of rat aorta.Methods:
Male Wistar rats (n = 32) were divided into four groups namely: sham (SH), control (C), non-treated diabetic, and vitamin E-treated diabetic (VETD) groups. Ox-LDL, lipid profile, CRP and VSMC proliferation of aorta were measured after 42 days.Results:
The results revealed that along with a significant increase in VSMC proliferation, the amount of CRP, Ox-LDL, and lipid profiles in diabetic rats. VSMC proliferation was significantly ameliorated, and elevated CRP, Ox-LDL, and lipid profiles were also restored to those of shams in VETD.Conclusions:
These findings strongly support the idea that diabetes induces Ox-LDL-mediated oxidative stress and VSMC proliferation in aorta of rat and imply that vitamin E has a strong protective effect as an antioxidant. Key Words: Ox-LDL, Vitamin E, Diabetes, VSMC proliferation 相似文献50.
Fatemeh Davami Farnaz Eghbalpour Leila Nematollahi Farzaneh Barkhordari Fereidoun Mahboudi 《Iranian Biomedical Journal》2015,19(4):194-205