Objective To retrospectively evaluate the effects of saline administration following contrast material injection, abdominal compression and two delay phase acquisition on image quality improvement of computed tomograp...Objective To retrospectively evaluate the effects of saline administration following contrast material injection, abdominal compression and two delay phase acquisition on image quality improvement of computed tomographic urography (CTU). Methods Medical records and informed consents of patients were obtained. In totally 122 patients (50 men, 72 women), two delay phase images with CTU were performed. Scans began simultaneously with a contrast bolus injection of 100 mL (300 mgI/mL) followed by a saline bolus injection of 100 mL at a rate of 5 mL/s. Two delay phase images were taken at 400 and 550 seconds for each patient. Examinations were taken by using abdominal compression or not. The distention and opacification of the urinary tract were evaluated by two interpreters together on transverse images and post-processing images. Effects of four techniques (saline administration and abdominal compression, saline administration only, compression only, and neither saline administration nor compression) and two delay phase acquisition on image quality improvement were analysed by using ANOVA and Chi-square test. Results Saline administration improved opacification (P<0.05) and increased overall image quality (P<0.01) of the intrarenal collecting system and proximal ureter. Abdominal compression (P<0.05) and delayed phase image acquisition of 550 seconds (P<0.01) all improved distention of the intrarenal collecting system and proximal ureter but did not improve opacification. No statistically significant effects on the distal ureter were found. However, there were more visualized distal ureteral segments with the longer imaging delay. Conclusion Saline administration, abdominal compression and longer imaging delays are all effective in improving image quality of 64-detector row CTU.展开更多
In semi arid and arid countries, the increase in production needs sometimes using brackish/saline water for irrigation. In Kairouan and Mahdia （Centre of Tunisia）, most of the irrigated areas are by pumping ground w...In semi arid and arid countries, the increase in production needs sometimes using brackish/saline water for irrigation. In Kairouan and Mahdia （Centre of Tunisia）, most of the irrigated areas are by pumping ground water from wells and in many cases, water has more than 4 g of salt per liter. To improve farmers＇ income through using efficiently brackish/saline and rare water, applied research programme was carried out. The methodology adopted was based on selection of six farmers＇ parcels. Behind water quality and quantity, soil salinity and crop response, the crop cost was studied： initial and final characterization and frequently controlled. Three different water regimes were observed induced three salinity regimes： an exclusively irrigated regime in summer based on using saline water producing continuous accumulation of salts, an irrigated-rained regime in autumn/spring based on alternated saline and fresh water inducing cyclic accumulation and leaching of salts and a rained regime in winter based on fresh water with continuous leaching of salts. At the short term, soil salinity increased under irrigation until equilibrium with the irrigation water quality and decreased by rain which produced an important salts leaching in a very short time. Many tons of salts were added to the initial stock in summer season and most of them are leached to the subsoil under irrigation and by rain in the winter. Salinization affected the deep layer and on the long term, salinization of the aquifer might occur. An important crop yield decrease for the summer crop was obtained but the socio-economic aspect appeared as an important factor conditioning the use of saline water.展开更多
Objective To investigate the histomorphometric features of the necrotic femoral head of rabbits induced by methylprednisolone combined with lipopolysaccharide. Methods Thirty-two mole adult New Zealand white rabbits w...Objective To investigate the histomorphometric features of the necrotic femoral head of rabbits induced by methylprednisolone combined with lipopolysaccharide. Methods Thirty-two mole adult New Zealand white rabbits were used. Among them, 16 were injected with lipopolysaccharide and methylprednisolone （ osteonecrosis group） , and another 16 were sham-injected with saline （ control group）. Magnetic resonance （MR） imaging was taken for femoral heads of the rabbits in both groups at the end of 2, 4 and 6 weeks after the injection. All the rabbits were then killed 6 weeks later. The femoral heads of the rabbits were collected and processed for histological and histomorphometric analysis. Results Femoral head necrosis occurred in 14 rabbits of the osteonecrosis group which were confirmed by histological evaluation and MR imaging. Osteonecrotic femoral heads, compared to controls, were characterized by lower values of bone volume/tissue volume （ P 〈 0. 01 ）, tabecular thichness （ P 〈 0. 01 ） , osteoid surface/bone surface （ P 〈 0. 05 ）, mineralizing apposition rate （ P 〈 0 05 ）, and bone formation rate/bone surface （ P 〈0. 05 ）. However, tabecular separation and eroded surface/bone surface were higher in osteonecrotic femoral heads than in controls （ P 〈 0. 01 ）. Trabecular number and osteoclast surface/ bone surface did not differ significantly. Conclusion The results demonstrated that osteoporosis was apparent in osteonecrotic femoral heads induced by methylprednisolone and lipopolysaccharide, due mainly to trabecular thinning rather than reduction of trabecular number. This might be due to reduced bone formation combined with increased bone resorption.展开更多
The salt-resistant nitrogen-fixing cyanobacteria 888 was experimentally applied to the reclamation of saline and alkali soil in Songnen Plain in China. The pH, electrical conductivity (EC) and sodium adsorption ratio ...The salt-resistant nitrogen-fixing cyanobacteria 888 was experimentally applied to the reclamation of saline and alkali soil in Songnen Plain in China. The pH, electrical conductivity (EC) and sodium adsorption ratio (SAR) of different saline soils were studied and compared. Results show that different saline soils exhibit various physico-chemical properties. Saline-sodic soils in Songnen Plain are ameliorated by using nitrogen-fixing blue-green algae 888 in the experiment. It is indicated that cyanobacteria 888 can grow in saline and alkaline soils, and the conditions favorable for its growth are soil moisture of 50% and dry algae inoculation at 0.03 mg/cm2. The main actions of nitrogen-fixing cyanobacteria are keeping the adsorbability of rubber sheath for sodium, increasing the organic matter content of the soils and decreasing the pH and the degree of salinity in the soils. But the arid climate and soil depth are the main factors that limit the restoration of saline and alkaline soils.展开更多
OBJECTIVE:To evaluate the efficacy and long-term effects of the three therapies for regulating and reinforcing lung and kidney(reinforcing lung and invigorating spleen,reinforcing lung and replenishing kidney,and supp...OBJECTIVE:To evaluate the efficacy and long-term effects of the three therapies for regulating and reinforcing lung and kidney(reinforcing lung and invigorating spleen,reinforcing lung and replenishing kidney,and supplementing Qi and nourishing kidney) in Traditional Chinese Medicine(TCM) on osteoporosis in rats with chronic obstructive pulmonary disease.METHODS:Totally 120 rats were randomly divided into control,model,Bufeijianpi,Bufeiyishen,Yiqizishen,aminophyline groups.Repeated smoke inhalations and bacterial infections were used to duplicate the stable Chronic obstructive pulmonary disease rat model.Normal saline was given to the air control and model groups,while Bufeijianpi granule,Bufeiyishen granule,and Yiqizishen granule,and aminophylline were administrated to rats in the Bufeijianpi,Bufeiyishen,Yiqizishen,and aminophylline groups respectively from weeks 9 through 20.Another 12 weeks without medicines to observe the long-term effect.Rats were sacrificed at week 20 and week 32.Bone mass density(BMD),bone mineral content(BMC),morphology of the femoral head,lung function,and levels of serum interleukin(IL)-1β,IL-6,and tumor necrosis factor-a were detected.RESULTS:At weeks 20 and 32,tidal volume,peak expiratory flow and expiratory flow at 50% tidal volume in the three TCM-treated groups were higher than those in the model group(P < 0.05).Femur weight,BMD,and BMC were significantly higher in the three TCM-treated groups and the aminophylline-treated group compared with the model group(P < 0.01),except for BMC in the Yiqizishen-treated group at week 20.CONCLUSION:Bufeijianpi,Bufeiyishen,and Yiqizishen granules show good effects in the prevention and treatment of osteoporosis,which can alleviate airflow limitations and inflammation,improve BMD and BMC of the femur,and have favorable long-term effects.展开更多
Objective:To investigate effects of Zibu Shenjing Fang(滋补肾精方) on growth and development of the mouse with insufficiency of kidney-essence and the mechanism.Methods:Total 50 mice were randomly divided into a norma...Objective:To investigate effects of Zibu Shenjing Fang(滋补肾精方) on growth and development of the mouse with insufficiency of kidney-essence and the mechanism.Methods:Total 50 mice were randomly divided into a normal group,a model group,a Jingui Shenqi Wan(金匮肾气丸) group,a Zibu Shenjing Fang high dose group and a Zibu Shenjing Fang low dose group,10 mice in each group.The kidney-essence insufficiency mouse model was established by use of threat-injuring the kidney combined with over-fatigue.At the same time of modeling,the mice in the model group were intragastrically administrated with saline 20 mL·kg-1·d-1,in the Jingui Shenqi Wan group with suspension of the Jingui Shenqi Wan 2.7 g·kg-1·d-1,in the Zibu Shenjing Fang high dose group with Zibu Shenjing Fang 20 g·kg-1·d-1 and in the Zibu Shenjing Fang low dose group with Zibu Shenjing Fang 10 g·kg-1·d-1,for 21 consecutive days.The general state was observed,the body weight was weighted,and serum growth hormone(GH) and insulin-like growth factor-1(IGF-1) contents were detected.Results:Compared with model group,Zibu Shenjing Fang groups and Jingui Shenqi Wan group could improve manifestation of the mouse with kidney-essence insufficiency,increase body weight of the mouse and serum GH and IGF-1 contents,especially in the high dose group.Conclusion:Zibu Shenjing Fang gives play to the function of tonifying the kidney and replenishing essence through regulating GH and IGF-1 levels,so as to influence growth and development of the mouse.展开更多
文摘Objective To retrospectively evaluate the effects of saline administration following contrast material injection, abdominal compression and two delay phase acquisition on image quality improvement of computed tomographic urography (CTU). Methods Medical records and informed consents of patients were obtained. In totally 122 patients (50 men, 72 women), two delay phase images with CTU were performed. Scans began simultaneously with a contrast bolus injection of 100 mL (300 mgI/mL) followed by a saline bolus injection of 100 mL at a rate of 5 mL/s. Two delay phase images were taken at 400 and 550 seconds for each patient. Examinations were taken by using abdominal compression or not. The distention and opacification of the urinary tract were evaluated by two interpreters together on transverse images and post-processing images. Effects of four techniques (saline administration and abdominal compression, saline administration only, compression only, and neither saline administration nor compression) and two delay phase acquisition on image quality improvement were analysed by using ANOVA and Chi-square test. Results Saline administration improved opacification (P<0.05) and increased overall image quality (P<0.01) of the intrarenal collecting system and proximal ureter. Abdominal compression (P<0.05) and delayed phase image acquisition of 550 seconds (P<0.01) all improved distention of the intrarenal collecting system and proximal ureter but did not improve opacification. No statistically significant effects on the distal ureter were found. However, there were more visualized distal ureteral segments with the longer imaging delay. Conclusion Saline administration, abdominal compression and longer imaging delays are all effective in improving image quality of 64-detector row CTU.
文摘In semi arid and arid countries, the increase in production needs sometimes using brackish/saline water for irrigation. In Kairouan and Mahdia （Centre of Tunisia）, most of the irrigated areas are by pumping ground water from wells and in many cases, water has more than 4 g of salt per liter. To improve farmers＇ income through using efficiently brackish/saline and rare water, applied research programme was carried out. The methodology adopted was based on selection of six farmers＇ parcels. Behind water quality and quantity, soil salinity and crop response, the crop cost was studied： initial and final characterization and frequently controlled. Three different water regimes were observed induced three salinity regimes： an exclusively irrigated regime in summer based on using saline water producing continuous accumulation of salts, an irrigated-rained regime in autumn/spring based on alternated saline and fresh water inducing cyclic accumulation and leaching of salts and a rained regime in winter based on fresh water with continuous leaching of salts. At the short term, soil salinity increased under irrigation until equilibrium with the irrigation water quality and decreased by rain which produced an important salts leaching in a very short time. Many tons of salts were added to the initial stock in summer season and most of them are leached to the subsoil under irrigation and by rain in the winter. Salinization affected the deep layer and on the long term, salinization of the aquifer might occur. An important crop yield decrease for the summer crop was obtained but the socio-economic aspect appeared as an important factor conditioning the use of saline water.
基金Supported by National Nature Science Foundation of China (30571898)
文摘Objective To investigate the histomorphometric features of the necrotic femoral head of rabbits induced by methylprednisolone combined with lipopolysaccharide. Methods Thirty-two mole adult New Zealand white rabbits were used. Among them, 16 were injected with lipopolysaccharide and methylprednisolone （ osteonecrosis group） , and another 16 were sham-injected with saline （ control group）. Magnetic resonance （MR） imaging was taken for femoral heads of the rabbits in both groups at the end of 2, 4 and 6 weeks after the injection. All the rabbits were then killed 6 weeks later. The femoral heads of the rabbits were collected and processed for histological and histomorphometric analysis. Results Femoral head necrosis occurred in 14 rabbits of the osteonecrosis group which were confirmed by histological evaluation and MR imaging. Osteonecrotic femoral heads, compared to controls, were characterized by lower values of bone volume/tissue volume （ P 〈 0. 01 ）, tabecular thichness （ P 〈 0. 01 ） , osteoid surface/bone surface （ P 〈 0. 05 ）, mineralizing apposition rate （ P 〈 0 05 ）, and bone formation rate/bone surface （ P 〈0. 05 ）. However, tabecular separation and eroded surface/bone surface were higher in osteonecrotic femoral heads than in controls （ P 〈 0. 01 ）. Trabecular number and osteoclast surface/ bone surface did not differ significantly. Conclusion The results demonstrated that osteoporosis was apparent in osteonecrotic femoral heads induced by methylprednisolone and lipopolysaccharide, due mainly to trabecular thinning rather than reduction of trabecular number. This might be due to reduced bone formation combined with increased bone resorption.
基金Sponsored by the Major State Scientific and Technological Projects of Water Pollution Control and Treatment(Grant No.2008ZX07208-005)
文摘The salt-resistant nitrogen-fixing cyanobacteria 888 was experimentally applied to the reclamation of saline and alkali soil in Songnen Plain in China. The pH, electrical conductivity (EC) and sodium adsorption ratio (SAR) of different saline soils were studied and compared. Results show that different saline soils exhibit various physico-chemical properties. Saline-sodic soils in Songnen Plain are ameliorated by using nitrogen-fixing blue-green algae 888 in the experiment. It is indicated that cyanobacteria 888 can grow in saline and alkaline soils, and the conditions favorable for its growth are soil moisture of 50% and dry algae inoculation at 0.03 mg/cm2. The main actions of nitrogen-fixing cyanobacteria are keeping the adsorbability of rubber sheath for sodium, increasing the organic matter content of the soils and decreasing the pH and the degree of salinity in the soils. But the arid climate and soil depth are the main factors that limit the restoration of saline and alkaline soils.
基金Supported by National Natural Science Fund of China(Influence and Long-Term Effects of Three Tiao-Bu Fei-Shen Therapies in Rats with Chronic Obstructive Pulmonary Disease on Regulation of Multidimensional Molecular Network,No.81130062)
文摘OBJECTIVE:To evaluate the efficacy and long-term effects of the three therapies for regulating and reinforcing lung and kidney(reinforcing lung and invigorating spleen,reinforcing lung and replenishing kidney,and supplementing Qi and nourishing kidney) in Traditional Chinese Medicine(TCM) on osteoporosis in rats with chronic obstructive pulmonary disease.METHODS:Totally 120 rats were randomly divided into control,model,Bufeijianpi,Bufeiyishen,Yiqizishen,aminophyline groups.Repeated smoke inhalations and bacterial infections were used to duplicate the stable Chronic obstructive pulmonary disease rat model.Normal saline was given to the air control and model groups,while Bufeijianpi granule,Bufeiyishen granule,and Yiqizishen granule,and aminophylline were administrated to rats in the Bufeijianpi,Bufeiyishen,Yiqizishen,and aminophylline groups respectively from weeks 9 through 20.Another 12 weeks without medicines to observe the long-term effect.Rats were sacrificed at week 20 and week 32.Bone mass density(BMD),bone mineral content(BMC),morphology of the femoral head,lung function,and levels of serum interleukin(IL)-1β,IL-6,and tumor necrosis factor-a were detected.RESULTS:At weeks 20 and 32,tidal volume,peak expiratory flow and expiratory flow at 50% tidal volume in the three TCM-treated groups were higher than those in the model group(P < 0.05).Femur weight,BMD,and BMC were significantly higher in the three TCM-treated groups and the aminophylline-treated group compared with the model group(P < 0.01),except for BMC in the Yiqizishen-treated group at week 20.CONCLUSION:Bufeijianpi,Bufeiyishen,and Yiqizishen granules show good effects in the prevention and treatment of osteoporosis,which can alleviate airflow limitations and inflammation,improve BMD and BMC of the femur,and have favorable long-term effects.
文摘Objective:To investigate effects of Zibu Shenjing Fang(滋补肾精方) on growth and development of the mouse with insufficiency of kidney-essence and the mechanism.Methods:Total 50 mice were randomly divided into a normal group,a model group,a Jingui Shenqi Wan(金匮肾气丸) group,a Zibu Shenjing Fang high dose group and a Zibu Shenjing Fang low dose group,10 mice in each group.The kidney-essence insufficiency mouse model was established by use of threat-injuring the kidney combined with over-fatigue.At the same time of modeling,the mice in the model group were intragastrically administrated with saline 20 mL·kg-1·d-1,in the Jingui Shenqi Wan group with suspension of the Jingui Shenqi Wan 2.7 g·kg-1·d-1,in the Zibu Shenjing Fang high dose group with Zibu Shenjing Fang 20 g·kg-1·d-1 and in the Zibu Shenjing Fang low dose group with Zibu Shenjing Fang 10 g·kg-1·d-1,for 21 consecutive days.The general state was observed,the body weight was weighted,and serum growth hormone(GH) and insulin-like growth factor-1(IGF-1) contents were detected.Results:Compared with model group,Zibu Shenjing Fang groups and Jingui Shenqi Wan group could improve manifestation of the mouse with kidney-essence insufficiency,increase body weight of the mouse and serum GH and IGF-1 contents,especially in the high dose group.Conclusion:Zibu Shenjing Fang gives play to the function of tonifying the kidney and replenishing essence through regulating GH and IGF-1 levels,so as to influence growth and development of the mouse.
