The high molecular weight glutenin subunits (HMW-GS) are the main components of storage proteins of wheat,and play a critical role in determining the visco-elastic properties of gluten. There are both quantitative and qualitative effects of HMW-GS on the processing properties of wheat. Current knowledge of the molecular structures,compositions and properties of the gluten proteins of wheat is summarized in details,and the role of the HMW-GS in determining the quality of the grain for breadmaking and how their amount and composition can be manipulated leading to changes in dough mixing properties is also discussed systematically.

Objective To investigate the value of functional MRI in the diagnosis and differential diagnosis of breast diseases.Methods Sixty-five patients with 68 lesions were enrolled in this study. Conventional T_1 WI and T_2 WI scan,dynamic contrast enhanced MRI,diffusion weighted imaging and ~1H single voxel MR spectroscopy were performed consequently.All lesions were verified by pathology,including 4 cases of breast adenosis,22 fibroadenomas,2 chronic inflammations,3 cysts,33 infitrating ductal carcinomas,1 intraductal carcinoma and 3 cystosarcoma phyllodes tumors.Morphological features,maximum enhancement ratio,time-intensity curve,apparent diffusion coefficient and Choline peak were analyzed. Results The detection rates of T_1 WI and T_2 WI were 14.7%(n=10)and 51.5%(n=35).The sensitivity,specificity,accuracy of dynamic contrast.enhanced MRI for the malignant tumor were 94.6%, 71.4% and 76.5% respectively.Retrospective study showed that diffusion weighted imaging,with the b value from 800 s/mm~2 to 1000 s/mm~2,could be used to differentiate various types of breast lesions.~1H signal voxel spectroscopy had a sensitivity of 51.4%,specificity of 82.6%,and accuracy of 67.6% for the malignent.The sensitivity,specificity and accuracy could reach 97.3%,90.0% and 92.6% respectively by combining conventional scan,dynamic contrast enhanced MRI and MR spectroscopy.Conclusion Functional MRI,with high sensitivity,specificity and accuracy,can be used widely in the diagnosis of malignant breast lesions.

Objective To evaluate the effects of 131 adrenoceptor anfisense on blood pressure and?1 adrenoceptor mRNA and protein levels in 2 kidney 1 clip(2K1C)rats.Method 2KIC hypertensive rots were produced by clipping renal artery of SD rats.Liposome/AS-ODNs 2.0 were tested intravenously in rats with 2KIC hypertension.Animals were divided into 5 groups(n=18 in each group):?1-AS-ODN group,?1-IN-ODN group,2K1C group,Sham group and SD group.Blood pressure was measured by tail-cuff method,the levels of myocardial?adreneceptor mRNA and protein were tested by RT-PCR and binding assay.Results On the basis of the magnitude and duration of hypotension,?1-AS-ODN decreased blood pressure by 39 mmHg at the most for 4 weeks.Compared with the 2KIC group,?1-AS-ODN did not significantly change the levels of myocardial?1 adrenoceptor mRNA but significantly decreased the levels of myocardial?1 adrenoceptor protein at 2,7,30 days (P

The effects of surfactants on the production of cellulase by Trichoderma viride in liquid substrate fermentation process were investigated. Straw was used as the sole carbon source and the surfactants were biosurfactant rhamnolipid from Pseudomonas aeruginosa and Tween 80. The changes of FPA,CMCase,Avicelase and surface tension with time were analyzed under different concentrations of the two surfactants. The results showed that the surfactants can enhance the enzyme activity of Trichoderma viride. The FPA,CMCase,Avicelase were promoted 1.08,1.6 and 1.03 times higher than the controls by rhamnolipid. The enhancement of the enzyme activity by rhamnolipid was much higher than that of Tween 80. At the same time,rhamnolipid was not degraded prior to other substrate.

AIM: To establish an experimental model of high intraocular pressure in mice by laser photocoagulation and to prepare for future research.
METHODS: Experimental model of high intraocular pressure was induced unilaterally in 44 C57BL/6 mice. The fellow eye served as a control. TONO-PEN AVIA Tonomter was used to measure intraocular pressure (IOP) to guarantee IOP value at 1, 2, 4, 8wk. Slit-lamp biomicroscopy was performed throughout the period and the structural changes were assessed histologically. And then, their eyes were enucleated, postfixed, cryoprotected, and embedded in optimal cutting temperature medium. After hematoxylin and eosin stain ( HE stain ) , cryosections of the retina were observed under light microscope. TdT-mediated biotin-dUTP nick end labeling ( TUNEL ) was performed on the retinal sections to determine apoptosis rate.
RESULTS: IOP of laser-treated eyes was significantly higher than that of control eyes from 1-8wk (P<0. 05). The highest IOP was 31mmHg, but only one eye. The IOP was mainly around 20mmHg. In laser-treated eyes, the angle of anterior chamber were narrow. Number of cells in the inner nuclear layer and retial gangllion cell layer was slightly lower than that in control eyes at 2wk, but by 4 and 8wk the number of cells was significantly lower than that in the control contralateral eyes.
CONCLUSION: The laser photocoagulation of limbus causes chronic elevation of IOP and this method may be a promising experimental model for the investigation of biological mechanisms of glaucomatous retinal ganglion cell damage.

Chinese patent orthopedic medicines feature complex components, mainly including desperate and toxic herbal pieces, narrow safety window, more clinical contraindications and frequent adverse drug reaction/events (ADR/ADE). To study the general safe medication regularity of Chinese patent orthopedic medicines, define key points in the medication education and ensure rational clinical medication, the authors took 80 types of commonly used Chinese patent orthopedic medicines as the study objects, collect 237 cases from 164 ADR/ADE documents through a system retrieval strategy, make a multidimensional literature analysis to determine the common risk factors for safe and rational medication of Chinese patent orthopedic medicines and establish an ADR/ADE prevention regularity. First, in the aspect of clinical symptoms, skin allergy is the most common ADR/ADE and closely related to the toxic ingredients, particularly accumulated liver or kidney damage caused by some drugs. Second, there are three time nodes in the ADR/ADE occurrence; The ADR/ADE occurred in 30 minutes is closely related to the idiosyncrasy; the ADR/ADE occurred between several months and half a year is related to the drug-induced liver and kidney damages; The most common ADR/ADE was observed within 7 days and predictable according to the pharmacological actions; Third, toxicity is an important factor in the occurrence of ADR/ADE of Chinese patent orthopedic medicines. Fourth, emphasis shall be given to the special medication factors, such as the combination with western medicines and Chinese herbal decoctions, overdose and long-course medication and self-medical therapy. In conclusion, the general ADR/ADE prevention regularity for Chinese patent orthopedic medicines was summarized to provide supports for clinicians in safe and rational medication and give the guidance for pharmacist in medication education.
Adult ; Aged ; Bone Diseases ; drug therapy ; Drug-Related Side Effects and Adverse Reactions ; etiology ; Drugs, Chinese Herbal ; adverse effects ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Nonprescription Drugs ; Orthopedics ; legislation & jurisprudence ; Young Adult

Objective To discuss the technique and value of preoperative reformatting with three-dimensional computed tomography technique for C_2 pedicle screw track.Methods GE Light Speed 16 Pro spinal CT scans of 15 adult dry vertebrae were loaded into an imaging station (software ADW4.2).Two methods of C_2 pedicle screw techniques were analyzed through virtual screw trajectory by VR (volume rendering) and MPR (multiple planar reformatting) techniques,in method A,screw entry point was the intersection between the media-vertical and the cranial line of C_2 inferior facet joint,in method B,the screw track was from the cranial and medial quadrant of the dorsal part of C_2 inferior facet joint.Results The screw track could be observed dynamically from any plane.Two vertebrae were ob- served with smaller height in isthmus and the medial edge of the transverse foramen since no space was a- vailable for the screw.The screw trajectories data were compared between method A and method B,which showed that the angles towards the cephalad (in sagittal plane) and midline (in transverse plane) were bigger in method A than in method B (P＜0.05,0.01),but the safe screw diameter was smaller in method A than in method B (P＜0.05),and there was no difference of the screw length between the two methods(P＜0.05 ).Conclusion In this research,the individual C_2 pedicle screw entry points, screw diameter and security screw angle can be simulated,and the screw track can be observed dynami- cally to make sure if it transits the bone structure completely.Preoperative three-dimensional computed tomography reformatting for pedicle screw track is of great value in clinical and basic researches.

OBJECTIVETo explore the possible mechanism of heme oxygenase-1 (HO-1) induction for its protective effects on acute respiratory distress syndrome (ARDS).

METHODSThe production of HO-1 was induced by hemoglobin (Hb) injection into oleic acid (OA) induced ARDS rats. Western blot and RT-PCR techniques were used to observe the induction of HO-1 in vivo. Both the levels of tumor necrosis factor-alpha (TNF-alpha) and interleukin-8 (IL-8) in serum and bronchoalveolar lavage fluid (BALF) were measured by enzyme linked immunosorbent assay (ELISA). Combined with blood gas analysis and other indexes, the effect of HO-1 on ARDS could be clearly manifested.

RESULTSThe expression of HO-1 mRNA was increased significantly 16 h after Hb injection, and the protein expression of HO-1 was also obviously increased 24 h later (P < 0.01). The levels of TNF-alpha and IL-8 in both serum and BALF were significantly lower in Hb + OA group than in OA group (P < 0.01). Arterial blood PaO(2), oxygen saturation, and oxygenated index in Hb + OA group [(56.28 +/- 6.71) mm Hg, (79.53 +/- 5.82)%, and (258.81 +/- 29.37) mm Hg respectively] were higher than in OA group [(35.08 +/- 4.59) mm Hg, (55.80 +/- 12.76)%, and (167.86 +/- 21.94) mm Hg]. Lung wet and dry weight, and pathological changes were also improved.

CONCLUSIONThe production of HO-1 was successfully induced by hemoglobin in vivo. Protective effects of HO-1 on ARDS might be related to the decreasing in inflammatory factors, such as TNF-alpha and IL-8.

Animals ; Blotting, Western ; Bronchoalveolar Lavage Fluid ; chemistry ; Enzyme-Linked Immunosorbent Assay ; Heme Oxygenase-1 ; biosynthesis ; genetics ; Hemoglobins ; pharmacology ; Interleukin-8 ; metabolism ; Male ; Oleic Acid ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley ; Respiratory Distress Syndrome, Adult ; metabolism ; prevention & control ; Reverse Transcriptase Polymerase Chain Reaction ; Tumor Necrosis Factor-alpha ; metabolism

ObjectiveTo explore the effect of Qingfei Jiangmai decoction （QJD） on the content of mercapturic acids in urine in healthy people amid PM_2.5 （particles 2.5 microns or less in size） pollution. MethodA total of 84 healthy students of 18-30 years old in Beijing were recruited and they were randomized into the test group （42 in total， with 1 dropout） and control group （42 in total， with 3 dropouts）. During the pollution， the test group and the control group respectively took QJD granules and placebo for 7 days （1 bag/time， 2 times/day）， and another 7-day intervention with the same drugs was performed at an interval of 4 weeks. The time-activity patterns were recorded during the intervention. On-line solid phase extraction-liquid chromatography/tandem mass spectrometry （SPE-LC-MS/MS） was performed to detect the content of PM_2.5-related metabolites S-phenylmercapturic acid （SPMA）， 3-hydroxypropylmercapturic acid （3-HPMA）， 3-hydroxy-1-methylpropylmercapturic acid （HMPMA）， N-acetyl-S-（2-nitrile ethyl）-L-cysteine （CEMA）， and N-acetyl-S-（2-hydroxy ethyl）-L-cysteine （HEMA） in urine before and after intervention. Statistical analysis was followed. ResultThe content of CEMA， HEMA， 3-HPMA， and HMPMA in the test group was all higher after the intervention than before the intervention， with the significant difference in HEMA （P<0.05）. After intervention， content of HEMA and SPMA was significantly higher in the test group than in the control group （P<0.05）， and the difference in HEMA （Z=-3.614， P<0.01） and HMPMA （Z=-1.988， P<0.05） before and after invention in the test group was significantly larger than that in the control group. After the intervention， HEMA in the test group was significantly higher than that in the control group （F=7.597， P<0.01）. ConclusionDuring PM_2.5 pollution， QJD can increase the excretion of HEMA， a metabolite of ethylene oxide， in the urine of healthy people in Beijing， and enhance the detoxification process of toxic components in PM_2.5， which is of great value in preventing and treating haze-related illnesses.

Aged ; Antineoplastic Agents ; adverse effects ; therapeutic use ; Carcinoma, Non-Small-Cell Lung ; drug therapy ; Disseminated Intravascular Coagulation ; chemically induced ; Female ; Humans ; Quinazolines ; adverse effects ; therapeutic use