3.Antagonism of Bacillus spp.B_1 and B_2 Strains Against Fusarium oxysporum f.sp. pisi
Xiao-Mei LIU ; Xiou-Rong CHEN ; Jin-Ji PU ;
Microbiology 1992;0(03):-
The antagonism of two strains B1 and B2 of Bacillus spp. against pea root rot pathogen Fusarium oxysporum f. sp. pisi was studied. The result of pairing culture showed that B1 and B2 strains of Bacillus spp. had strong antifungal activity to the pathogen. The colonial color of the pathogen changed from gray to white, aerial hyphas increased and entangled into group after treatment with the cell-free fermentational filtrate of B1 or B2. Observation under optical microscope showed that hyphas and spores of the pathogen swelled and distorted with concentrated cytoplasm after treatment, the spores could not germinate or germinated abnormally . A lot of vesicles appeared at the top of the hyphas, and the hyphas stopped growing and broke finally, their cytoplasm spilled from the cell. The cell-free fermentational filtrate of B1 or B2 strains contained 1795.53?g/mL and 1345.93?g/mL protein respectively, from which two antifungal proteins of 103.5 kD (B1 ) and 127.6 kD (B2) were purified.
4.Study of the effect of physical therapy on patients with above knee amputation
Dong-mei CHANG ; Shu-rong JI ; Hui GUO ; Qi ZHANG
Chinese Journal of Rehabilitation Theory and Practice 2002;8(3):172-172
ObjectiveTo study the rehabilitation effect of physical therapy on patients with above knee amputation. Methods50 patients with above knee amputation were evaluated with FIM scale before and after physical therapy. ResultsThere was a significant difference before and after physical therapy(P<0.05). Conclusions Physical therapy is effective on patients with above knee amputation.
6.Microinjection of adrenomedullin into rostral ventrolateral medulla increases blood pressure, heart rate and renal sympathetic nerve activity in rats.
Acta Physiologica Sinica 2002;54(6):460-466
The present study was undertaken to examine the effects of microinjection of adrenomedullin (AM) into rostral ventrolateral medulla (RVLM) on mean arterial pressure (MAP), heart rate (HR) and renal sympathetic nerve activity (RSNA) in 34 anesthetized Sprague-Dawley rats. The results obtained are as follows. (1) Following microinjection of AM (10 micromol/L, 200 nl) into the RVLM, MAP, HR and RSNA were significantly increased from 99.09+/-3.32 mmHg, 370.78+/-7.84 bpm and 100+/-0% to 113.57+/-3.64 mmHg (P>0.001), 383.28+/-7.38 bpm (P>0.001) and 123.72+/-2.74% (P>0.001), respectively. (2) Pretreatment with microinjection of calcitonin gene-related peptide receptor antagonist CGRP8-37 (100 micromol/L, 200 nl) did not change the effects of AM. (3) L-arginine (100 mg/kg, 0.2 ml, i.v.), an NO precursor, abolished the effects of AM. This study demonstrates that AM acting at the rostral ventrolateral medulla may produce significant cardiovascular responses, the effects are not mediated by CGRP receptor but may be abolished by NO.
Adrenomedullin
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administration & dosage
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pharmacology
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Animals
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Blood Pressure
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drug effects
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Heart Rate
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drug effects
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Kidney
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innervation
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Lateral Thalamic Nuclei
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drug effects
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Medulla Oblongata
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drug effects
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Rats
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Rats, Sprague-Dawley
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Sympathetic Nervous System
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drug effects
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physiology
7.Effect of intracarotid administration of adrenomedullin on the spontaneous electrical activity of area postrema neurons in sino-aortic denervated rats.
Shu-Mei JI ; Hua YUE ; Rui-Rong HE
Acta Physiologica Sinica 2003;55(4):395-400
To observe the effect of intracarotid administration of adrenomedullin (AM) on the spontaneous electrical activity of area postrema (AP) neurons, 78 spontaneous active units were recorded from 63 sino-aortic denervated Sprague-Dawley rats using extracellular recording technique. The results obtained are as follows. (1) Following intracarotid administration of AM (0.3 nmol/kg), the discharge rate of 47 out of 78 units increased markedly from 2.99+/-0.24 to 4.79+/-0.29 spikes/s (P<0.001), 20 units decreased from 3.24+/-0.46 to 1.97+/-0.37 spikes/s (P<0.001), and the remaining 11 showed no response. Blood pressure (BP) and heart rate (HR) did not change throughout the experimentation. (2) Pretreatment with intracarotid administration of calcitonin gene-related peptide receptor antagonist CGRP8-37 (3 nmol/kg) did not change the effects of AM. (3) Following intracarotid injection of NO precursor L-arginine (30 mg/kg), the excitatory effect of AM was attenuated. The above results indicate that AM can excite spontaneous electrical activity of AP neurons, this effect is not mediated by calcitonin gene-related peptide receptor but may be attenuated by NO precursor L-arginine.
Action Potentials
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physiology
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Adrenomedullin
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pharmacology
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Animals
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Aorta
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innervation
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physiology
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surgery
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Area Postrema
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physiology
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Carotid Sinus
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innervation
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physiology
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surgery
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Denervation
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Injections, Intra-Arterial
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Male
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Neurons
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physiology
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Rats
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Rats, Sprague-Dawley
8.Effect of motor impersistence on functional recovery and prognosis of patients with left hemiplegia
Wei CHEN ; Dong-Mei LIU ; Hai-Tao LU ; Qi ZHANG ; Tong ZHANG ; Shu-Rong JI ;
Chinese Journal of Physical Medicine and Rehabilitation 2003;0(10):-
Objective To investigate the influence of motor impersistence on functional recovery and prog- nosis of patients with left hemiplegia. Methods A total of 64 in-patients with left side hemiplegia who were able to understand the oral instructions were assigned into a motor impersistence group (n = 31 ) and a control group (n = 34) , respectively, according to the assessment with Scale of Motor Impersistence developed by Joynt. Both groups were comparable in terms of the basic clinical characteristic and motor function of patients except motor impersis- tence. The conventional rehabilitation training programs were adopted for all patients in this study. Brunnstrom func- tional category, Ueda Satoshi hemiplegic finger function assessment scale, upper limb function assessment scale, Berg balance scale, Functional ambulatory category, Modified Barthel Index were employed to evaluate the subjects before and after 1 and 2 months of treatment, with regard to the motor function of their upper limbs, walking ability, activities of daily living performance and balance ability. Results After 1 month of treatment, the patients in the M1 group were significantly improved with regard to the motor function of upper limbs, hand function, standing ba- lance and activity of daily living performance( P0.05 ) , while those in the control group were improved with all the parameters except the lower limb function. After 2 months of treatment, patients in both groups were all significantly improved ( P
9.Relative bioavailablity of cefaclor effervescent tabletsin human volunteers
Fu-Rong QIU ; Jin-Mei JI ; Bo CHENG ; Zhao-Hong ZENG ; Hua SUN ; Guo-Guang MAO ;
Chinese Journal of Clinical Pharmacology and Therapeutics 2000;0(02):-
Aim To study relative bioavailablity of cefaclor effervescent tablets in healthy volunteers. Methods According to the crossover design, A volunteers were each orally given a single does of the 0.75 g cefaclor effervescent tablets and cefaclor capsules with an interval of 5 days between the two formulations.The plasma concentrations of the drug were determined by RP-HPLC.Pharmacokinetic parameters were obtained by ATPK programe,and calculated on the basis of open single compartment model.Results After a single oral dose, the peak levels in plasma averaged Cmax(31.27?5.81)?g?ml-1 and(30.56?5.25) ?g?ml-1 at (0.58?0.12)h and(0.73?0.17)h and AUC0~4(35.48?4.65) ?g?h?ml-1 and (35.89?2.90) ?g?h?ml-1 for tablet and capsule,respectively. Conclusion The result shows that two formulations are bioequivalence.
10.Semantic priming processing in children with Chinese developmental dyslexia
Chaoqun WANG ; Yang YI ; Xuan DONG ; Li LIU ; Haitian MEI ; Rong KUANG ; Shiyan JI
Chinese Journal of Behavioral Medicine and Brain Science 2021;30(2):150-156
Objective:To explore the semantic priming processing characteristics of children with Chinese developmental dyslexia(DD).Methods:According to scores of the dyslexia checklist for Chinese children, character recognition test and Raven's standard progressive matrices (RSPM), 19 primary school students from a school in Wuqia County of Xinjiang were selected as DD group.Meanwhile, 19 children were selected as chronological-age control(CA) group matching in age and RSPM scores, and 20 children were selected as reading-level control(RL) group according to the character recognition test and RSPM scores.The amplitude of N400 of children in three groups were tested by semantic priming paradigm under the conditions of semantic related, unrelated and pseudo words.Results:The accuracy of the DD group under the conditions of irrelevant semantics((0.55±0.25) vs (0.81±0.16), P<0.05), and pseudo characters((0.43±0.27) vs (0.68±0.26), P<0.05) were significantly lower than those of CA group.There was no difference between DD group and RL group, as well as between RL group and CA group(both P>0.05). There was no significant difference in the response time among the three groups of children under semantic related and unrelated conditions( F=1.23, 2.03, both P>0.05). In terms of ERP data, in semantic related condition, there was no significant difference in N400 amplitude among the three groups ( F=0.55, P>0.05). In semantic unrelated condition, the amplitude of N400 in DD group was smaller than that in CA Group((-5.92±3.70)μV vs (-9.76±3.45)μV, P<0.05), and there was no statistically significant difference between DD group and RL Group((-5.92±3.70)μV vs (-7.41±4.02)μV, P>0.05), as well as between CA gorup and RL group.As to pseudo words condition, children in DD group had a lower amplitude of N400 than those in CA and RL groups ((-6.03±2.92)μV vs (-9.98±3.40)μV, (-8.91±3.40)μV, both P<0.05). While no significant differences were found between CA group and RL group. Conclusion:Children with Chinese DD have cognitive defects in semantic and orthographic processing.The semantic cognitive defects may caused by their low reading level, rather than their inherent defect, while the defect in orthographic processing may be their inherent defect.