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1.
Chinese journal of integrative medicine ; (12): 357-365, 2022.
Article in English | WPRIM | ID: wpr-928947

ABSTRACT

OBJECTIVE@#To investigate whether the antihypertensive mechanism of electroacupuncture (EA) is associated with attenuating phenotype transformation of vascular smooth muscle cells (VSMCs) via phosphoinositide3-kinase (PI3K)/protein kinase B (Akt) and mitogen-activated protein kinase (MAPK) signaling pathways.@*METHODS@#Eight Wistar-ktoyo (WKY) rats were set as normal blood pressure group (normal group). A total of 32 spontaneous hypertensive rats (SHRs) were randomly divided into 4 groups using random number tables: a model group, an EA group, an EA+PI3K antagonist group (EA+P group), and an EA+p38 MAPK agonist+extracellular signal-regulated kinase (ERK) agonist group (EA+M group) (n=8/group). SHRs in EA group, EA+P group and EA+M group received EA treatment 5 sessions per week for continuous 4 weeks, while rats in the normal and model groups were bundled in same condition. The systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial pressure (MAP) of each rat was measured at 0 week and the 4th week. After 4-week intervention, thoracic aorta was collected for hematoxylin-eosin (HE) staining, immunohistochemistry [the contractile markers α-smooth muscle actin (α-SMA) and calponin and the synthetic marker osteopontin (OPN)] and Western blot [α-SMA, calponin, OPN, PI3K, phosphorylated-Akt (p-Akt), Akt, p-p42/44 ERK, total p42/44 ERK, p-p38 MAPK and total p38 MAPK].@*RESULTS@#EA significantly reduced SBP, DBP and MAP (P<0.01). HE staining showed that the wall thickness of thoracic aorta in EA group was significantly decreased (P<0.01). From results of immunohistochemistry and Western blot, EA increased the expression of α-SMA and calponin, and decreased the expression of OPN (P<0.01). In addition, the expression of PI3K and p-Akt increased (P<0.01), while the expression of p-p42/44 ERK and p-p38 MAPK decreased in EA group (P<0.01). However, these effects were reversed by PI3K antagonist, p38 MAPK agonist and ERK agonist.@*CONCLUSIONS@#EA was an effective treatment for BP management. The antihypertensive effect of EA may be related with inhibition of phenotypic transformation of VSMCs, in which the activation of PI3K/Akt and the repression of MAPK pathway were involved.


Subject(s)
Animals , Rats , Electroacupuncture , Extracellular Signal-Regulated MAP Kinases/metabolism , MAP Kinase Signaling System , Muscle, Smooth, Vascular , Phenotype , Phosphatidylinositol 3-Kinases/metabolism , Proto-Oncogene Proteins c-akt/metabolism , Rats, Inbred SHR
2.
Chinese Journal of Medical Instrumentation ; (6): 296-301, 2022.
Article in Chinese | WPRIM | ID: wpr-928908

ABSTRACT

Blood glucose monitoring is of great significance to diabetic patients, and the development of rapid, accurate and real-time glucose detection technology has become a research hotspot nowadays. This study introduces the concept and classification of the enzyme-free glucose sensor, expounds enzymefree glucose sensor electrode characterization methods and the application progress of different materials in enzyme-free blood glucose sensors. Meanwhile, some problems of enzyme-free glucose sensor existing in the current research and its future application prospects also will be discussed.


Subject(s)
Humans , Blood Glucose , Blood Glucose Self-Monitoring , Electrodes , Glucose , Monitoring, Physiologic
3.
Journal of Integrative Medicine ; (12): 432-441, 2022.
Article in English | WPRIM | ID: wpr-939903

ABSTRACT

OBJECTIVE@#To investigate the influence of electroacupuncture (EA) on ghrelin and the phosphoinositide 3-kinase/protein kinase B/endothelial nitric oxide synthase (PI3K/Akt/eNOS) signaling pathway in spontaneously hypertensive rats (SHRs).@*METHODS@#Eight Wistar-Kyoto rats were used as the healthy blood pressure (BP) control (normal group), and 32 SHRs were randomized into model group, EA group, EA plus ghrelin group (EA + G group), and EA plus PF04628935 group (a potent ghrelin receptor blocker; EA + P group) using a random number table. Rats in the normal group and model group did not receive treatment, but were immobilized for 20 min per day, 5 times a week, for 4 continuous weeks. SHRs in the EA group, EA + G group and EA + P group were immobilized and given EA treatment in 20 min sessions, 5 times per week, for 4 weeks. Additionally, 1 h before EA, SHRs in the EA + G group and EA + P group were intraperitoneally injected with ghrelin or PF04628935, respectively, for 4 weeks. The tail-cuff method was used to measure BP. After the 4-week intervention, the rats were sacrificed by cervical dislocation, and pathological morphology of the abdominal aorta was observed using hematoxylin-eosin (HE) staining. Enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of ghrelin, nitric oxide (NO), endothelin-1 (ET-1) and thromboxane A2 (TXA2) in the serum. Isolated thoracic aortic ring experiment was performed to evaluate vasorelaxation. Western blot was used to measure the expression of PI3K, Akt, phosphorylated Akt (p-Akt) and eNOS proteins in the abdominal aorta. Further, quantitative real-time polymerase chain reaction (qRT-PCR) was conducted to measure the relative levels of mRNA expression for PI3K, Akt and eNOS in the abdominal aorta.@*RESULTS@#EA significantly reduced the systolic BP (SBP) and diastolic BP (DBP) (P < 0.05). HE staining showed that EA improved the morphology of the vascular endothelium to some extent. Results of ELISA indicated that higher concentrations of ghrelin and NO, and lower concentrations of ET-1 and TXA2 were presented in the EA group (P < 0.05). The isolated thoracic aortic ring experiment demonstrated that the vasodilation capacity of the thoracic aorta increased in the EA group. Results of Western blot and qRT-PCR showed that EA increased the abundance of PI3K, p-Akt/Akt and eNOS proteins, as well as expression levels of PI3K, Akt and eNOS mRNAs (P < 0.05). In the EA + G group, SBP and DBP decreased (P < 0.05), ghrelin concentrations increased (P < 0.05), and the concentrations of ET-1 and TXA2 decreased (P < 0.05), relative to the EA group. In addition, the levels of PI3K and eNOS proteins, the p-Akt/Akt ratio, and the expression of PI3K, Akt and eNOS mRNAs increased significantly in the EA + G group (P < 0.05), while PF04628935 reversed these effects.@*CONCLUSION@#EA effectively reduced BP and protected the vascular endothelium, and these effects may be linked to promoting the release of ghrelin and activation of the PI3K/Akt/eNOS signaling pathway.


Subject(s)
Animals , Rats , Electroacupuncture , Ghrelin/pharmacology , Nitric Oxide/metabolism , Nitric Oxide Synthase Type III/pharmacology , Phosphatidylinositol 3-Kinase/pharmacology , Phosphatidylinositol 3-Kinases/metabolism , Proto-Oncogene Proteins c-akt/pharmacology , Rats, Inbred SHR , Rats, Inbred WKY , Signal Transduction
4.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 60-66, 2021.
Article in Chinese | WPRIM | ID: wpr-905313

ABSTRACT

Results and Conclusion:The mean of articles published was 70.5 a year. Germany, USA, UK were the top countries of cooperative documents; Tübingen University, Keio University and Shanghai Jiao Tong University were the top institutions. The most cooperative articles were involved the team of Gharabaghi A. Motor imagery-brain computer interface, network, motor function, especially walking function, may be the focuses in the future. Objective:To summarize the research structure of motor imagery applied in stroke and identify the hotspots and development. Methods:Literatures about motor imagery applied in stroke collected in Web of Science core database between 2010 to 2020 were obtained, and analyzed with CiteSpace software to draw the relevant knowledge mapping of related countries, institutions, authors, and keywords, etc.

5.
Chinese Journal of Hospital Administration ; (12): E012-E012, 2020.
Article in Chinese | WPRIM | ID: wpr-811551

ABSTRACT

Since the outbreak of Novel Coronavirus Pneumonia(NCP), hospitals have taken the fight against the virus as its own responsibility, and keep standing in the front line of epidemic prevention and control. The continuous input of anti-epidemic forces in hospitals also brings challenges to the medical supplies support, including the management of protective supplies and the maintenance of medical equipment. In the face of increasing security pressure, the medical materials support team broke the game on multiple fronts. Firstly, the team implements active material procurement strategy, sets material distribution priority according to risk level, releases materials uniformly based on stock and use, and implements traceability management of donated materials to ensure material supply. Secondly, centralized allocation management of equipment, emergency installation, advanced maintenance and emergency maintenance work is effectively completed. Thirdly, disinfection strategies for items and equipment are developed safely and effectively with the aid of disinfection equipment functions. At last, personnel management and training have been strengthened. These measures have provided strong support for the orderly prevention and control of the epidemic.

6.
Journal of Forensic Medicine ; (6): 199-203, 2020.
Article in English | WPRIM | ID: wpr-985105

ABSTRACT

Objective To study the relations of the dural thickness and the biomechanical parameters with postmortem interval (PMI) of human cadavers, and to explore the feasibility of the two indexes used for PMI estimation. Methods Dural samples were collected at different postmortem intervals of 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 48 h, 60 h, 72 h, 84 h and 96 h, then fabricated into 4.0 cm×1.0 cm A and B test specimens. The thickness of the A test specimen was measured, and the biomechanical parameters, such as ultimate load, maximum force deformation, tensile strength, elastic modulus and fracture force, were measured. The regression equations of thickness, biomechanical parameters and PMI were fitted respectively, and the difference between the predicted value and actual measured value of PMI was verified by the verification group. The B test specimen was fixed with 10% neutral formaldehyde solution, then tissue sections were prepared to observe its morphological changes. Results From 6 h to 96 h after death, the dural thickness decreased gradually, the collagen fibers gradually changed from clear arrangement to mutual fusion, and the number of nuclei decreased gradually. The dural thickness, ultimate load, tensile strength, elastic modulus and fracture force decreased sequentially, among which the dural thickness, ultimate load, elastic modulus and fracture force had a correlation with PMI (P<0.05). In the return test, the difference between the predicted value and actual measured value of PMI in the verification group had no statistical significance (P>0.05). Conclusion The dural thickness, ultimate load, elastic modulus and fracture force change sequentially from 6 h to 96 h after death. The regression equation established by the relationship between the changes and PMI can be used for PMI estimation.


Subject(s)
Humans , Autopsy , Cadaver , Fractures, Bone , Postmortem Changes , Time Factors
7.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 1028-1032, 2020.
Article in Chinese | WPRIM | ID: wpr-905431

ABSTRACT

There were some disadvantages such as low efficiency and strong subjectivity for scale-based assessment for motor dysfunction after stroke. Recently, automatic assessment approaches based on sensor technology and machine learning were developed, which can be used for motor function assessment of stroke patients in terms of motion control, balance, gait and range of motion, etc.

8.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 1444-1449, 2019.
Article in Chinese | WPRIM | ID: wpr-905726

ABSTRACT

Objective:To analyze the current status and hotspots of mirror therapy in recent 20 years. Methods:The literatures about mirror therapy in science citation index expanded (SCI-E) of Web of Science (WOS) from 1998 to 2019 were researched. CiteSpace was used to map the cooperative network of authors, countries and research institutions of relevant literatures; the keywords were taken as nodes for co-occurrence analysis and conduct clustering analysis, time evolution analysis and Burst analysis; the cited literatures and cited journals were taken as nodes to draw co-cited maps. In addition, the cited literatures were dealt with Burst analysis. Results:Totally, 435 articles were included. The high yield authors were Mosaley G L and Tsao J W. The high yield countries were the United States, Germany and England. The high yield institutions were Heidelberg University and University of South Australia. Prediction of phantom limb pain, complex regional pain syndrome, the improvement of motor function especially upper limb function, and augmented reality after stroke will be the focus of mirror therapy in the future. Conclusion:The research of mirror therapy is still in its infancy, with rapid development but insufficient influence.

9.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 648-651, 2019.
Article in Chinese | WPRIM | ID: wpr-905609

ABSTRACT

In order to explore the mechanism and physiological and pathological changes of spasm, it is often necessary to establish corresponding experimental animal spasm models. The quantitative evaluation of rodent spasm model can not only evaluate the success of modeling, but also can be one of the main quantitative indicators of the effect of intervention. This paper summarized the commonly used methods of rodent spasm evaluation.

10.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 1107-1111, 2019.
Article in Chinese | WPRIM | ID: wpr-905132

ABSTRACT

Results and Conclusion A total of 4820 articles were included. Daskalakis Z J was the author who published the most researches, while it was University of Toronto, United States in term of institutes and nations. The disciplines mostly involved in neuroscience and neurology. The basic researches mostly involved in the transcranial magnetic stimulation and brain motor cortex. The clinical researches mostly involved in stroke and depression. Objective:To analyze the research status and hotspots of transcranial magnetic stimulation in the past five years. Methods:The literatures about transcranial magnetic stimulation in SCI-E of Web of Science from 2014 to 2018 were researched, and the data were analysed with CiteSpace in term of researchers, nations, institutions, disciplines and keywords.

11.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 205-207, 2019.
Article in Chinese | WPRIM | ID: wpr-905100

ABSTRACT

Hypermyotonia is commom after stroke and difficult to treat, which limits the functional activities of the patients. Acu-puncture is effective on hypermyotonia after stroke, and more and more approaches have been developed. This paper summarized the acupuncture from the profile of sites for hypermyotonia after stroke.

12.
Chinese Journal of Interventional Cardiology ; (4): 45-51, 2019.
Article in Chinese | WPRIM | ID: wpr-744561

ABSTRACT

Objective To investigate the prediction by intravascular ultrasound (IVUS) with monocyte to high density lipoprotein-cholesterol (HDL-C) ratio (MHR) of 12-month prognosis in patients with intermediate non-left main coronary lesions after percutaneous coronary intervention (PCI). Methods Patients with intermediate non-left main coronary lesions diagnosed by coronary angiography were tested of monocyte counts and HDL-C levels at admission with MHRs calculated. IVUS was used to examine plaque stability in target lesions. Patients were dviided into stable plaque group (n=44) and unstable plaque group (n=140) according to the IVUS results. PCI was then operated in patients with unstable plaque or with minimum lumen area<4 mm2. The major adverse cardiovascular events (MACE) were recorded during the follow-up period of 12 months after PCI. Results MHR was significantly higher in unstable plaque group than that in stable plaque group[(22.6±8.4) vs.(14.1±7.2),P<0.001]. Receiver-operating characteristic (ROC) analysis revealed that an MHR cut-off of 16.05 had 74.2% sensitivity and 77.0% specificity for prediction of 12-month MACE after PCI (AUC 0.78, 95% CI 0.71–0.85, P<0.001). Besides, unstable plaque with MHR over 16.05 was an independent risk factor for 12-month MACE after PCI (adjusted HR 3.26, 95% CI 2.48–4.14, P=0.020). Conclusions IVUS combined with MHR is a valuable index predicting the prognosiso f patients with intermediate non-left main coronary lesions who underwent PCI.

13.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 437-441, 2018.
Article in Chinese | WPRIM | ID: wpr-702512

ABSTRACT

Objective To observe the effect of isokinetic training of knee flexors and extensors on walking ability in patients with knee osteoarthritis(KOA). Methods From December,2016 to June,2017,120 patients with KOA in our hospital were randomly divided into blank group(n=40),control group(n=40)and observation group(n=40).All the groups were injected with sodium hyal-uronate intraluminally,and received joint mobilization.The control group added conventional strength training, including isotonic and isometric static squat exercise of muscles around the knee. The observation group re-ceived knee isokinetic training additionally,the training mode was ordinary isokinetic/centripetal mode.Before and four weeks after treatment, the peak torque (PT), the Lysholm score and Visual Analogue Scale (VAS) for pain,ten-meter walking time and six-minute walking distance were tested. Results After treatment,the PT value of knee flexors and extensors,the scores of VAS and Lysholm,ten-meter walking time and six-minute walking distance significantly improved in all groups(P<0.05),among which the observa-tion group was the best(P<0.05). Conclusion Isokinetic muscle strength training of knee flexors and extensors can improve the walking ability of patients with KOA.

14.
Journal of China Pharmaceutical University ; (6): 46-52, 2017.
Article in Chinese | WPRIM | ID: wpr-514217

ABSTRACT

To improve the solubility of quercetin ( QT) , one of flavonoids that can inhibit the proliferation of vari-ous types of cancer cells, the novel amphiphilic polymer N-( 4-methylimidazole)-hydroxyethyl-chitosan ( MHC) , synthetized by chemical derivatization from chitosan, was used as the self-assembly micelles of QT. The formed polymer was characterized by 1 H NMR, elemental analysis and pyrene fluorescence spectrometry. The formulation of MHC micelles loading quercetin was optimized through single factor experiment. Then the optimized formulation was obtained as follows:the concentration of MHC was 0. 67% and the ratio of drug and carrier was 1 ∶10. The micelles particle size was ( 99. 21 ± 1. 71) nm, Zeta potential was +( 20. 01 ± 0. 72) mV and drug loading was ( 5. 42 ± 0. 32 )%. The in vitro release curve was investigated and was found to conform to Higuchi equation of Q=0. 1101 t1/2 -0. 064. The results of in vivo experiment showed that the mean rentention time and bioavail-ability of the MHC-QT micelles were 21. 42 h and 57. 49 μg h/mL, respectively, compared to 0. 30 h and 2. 50 μg h/mL of the free QT solution. These indicated that the MHC micelles could significantly improve the solubility of QT, the drug sustained-release effect and bioavailability, which would used as carrier for the anti-tumor drugs.

15.
Journal of Sun Yat-sen University(Medical Sciences) ; (6): 916-920, 2017.
Article in Chinese | WPRIM | ID: wpr-668543

ABSTRACT

[Objective]To discuss the CT diagnosis and differential diagnosis of solid pseudopapillary tumor of the pancreas (SPTP).[Methods]The CT findings of 20 patients with SPTP proved by surgically pathology were retrospectively analyzed and summa?rized.[Results]SPTP were composed of solid and cystic components with surrounding capsule resulting to clear demarcation between tumor and normal pancreas without dilation of pancreatic duct. The tumor parenchyma was slightly hyperenhancement on arterial phase and showed gradual enhancement on venous and delayed phase.[Conclusions]The CT findings of SPTP have relative specifici?ty and can contribute to early diagnosis and differential diagnosis of SPTP.

16.
Chinese Journal of Contemporary Pediatrics ; (12): 25-30, 2014.
Article in Chinese | WPRIM | ID: wpr-345618

ABSTRACT

<p><b>OBJECTIVE</b>To determine the effect of gonadotropin releasing hormone agonist (GnRHa), by itself alone or in combination with recombinant human growth hormone (rhGH), on height in young girls (bone age≥10 years) with idiopathic central precocious puberty (ICPP).</p><p><b>METHODS</b>Eighty girls with ICPP (9.0±0.7 years old) from six medical centers across Southeast and Southwest China participated in this study. They were allocated to treatment with GnRHa+rhGH (n=31) and GnRHa (n=49) respectively. Girls in the GnRHa+rhGH group (bone age 11.18 ±0.53 years) were treated with GnRHa for 25.29±6.92 months and rhGH for 12.87±7.02 months. Girls in the GnRHa group (bone age 11.03 ±0.50 years) were treated with GnRHa for 25.96±8.95 months. The height standard deviation for bone age (HtSDS-BA), predicted adult height, near-adult height and net height increase before and after treatment were recorded for girls in both groups.</p><p><b>RESULTS</b>HtSDS-BA was significantly improved after treatment for both groups (P<0.01) and the HtSDS-BA value was superior in the GnRHa+rhGH group over the GnRHa group (P<0.01). Values in near adult height (157±6 cm vs 157±4 cm), net height increase after treatment (4.68 cm vs 3.89 cm), and predicted adult height after drug withdrawal (161±5 cm vs 158±5 cm) were higher in the GnRHa+rhGH group than the GnRHa group, but the differences were not significant.</p><p><b>CONCLUSIONS</b>Both GnRHa plus rhGH and GnRHa alone can improve the near adult height in girls with ICPP with a bone age ≥10 years to a similar extent. Adult height predicted based on bone age in ICPP girls following drug withdrawal is usually overestimated and precautions should be taken when this parameter is used.</p>


Subject(s)
Child , Female , Humans , Body Height , Gonadotropin-Releasing Hormone , Pharmacology , Human Growth Hormone , Pharmacology , Puberty, Precocious , Drug Therapy
17.
Chinese Journal of Microbiology and Immunology ; (12): 364-368, 2013.
Article in Chinese | WPRIM | ID: wpr-436448

ABSTRACT

Objective To determine the functional motif of the recombinant Ricin B(rRicin B) in Vibrio vulnificus cytolysin (VVC) and understand its molecule pathogenic mechanism.Methods The motif of VVC was predicted through bioinformatics analysis and cloned into a procaryotic expression vector pET28a-rRicin B.The recombinant plasmid was transformed into E.coli BL21 (DE3) and induced by IPTG to express rRicin B.The expressed protein was further analyzed by SDS-PAGE and purified by Ni2+-NTA agarose.Renaturation of the rRicin B were also carried out for further analysis.ELISA assay and confocal microscope was applied to identify the activity of the rRicin B on human Hela cells.Results Ricin B motif located in the 336-465 amino acids of Vibrio vulnificus cytolysin with a relative molecular weight of 20×103.The result of ELISA showed that the antigenicity of rRicin B was 28.71 U/L after renaturation.FITC labeled rRicin B could bind to the cell membrane and enter the cytoplasm of human Hela cells.Conclusion The Ricin B motif in Vibrio vulnificus cytolysin bearing the similar ability with the natural Ricin B can bind to the cell membrane and enter the cytoplasm.This feature may play an important role in the activity of pore-forming and the cytotoxicity of Vibrio vulnificus cytolysin.

18.
Chinese journal of integrative medicine ; (12): 146-151, 2012.
Article in English | WPRIM | ID: wpr-289693

ABSTRACT

<p><b>OBJECTIVE</b>To observe the effects of comprehensive therapy (CT) with electroacupuncture (EA) in combination with psycho-intervention (PI) on the cognitive function and event-related potentials (ERP), P300 and mismatch negativity (MMN), in patients with internet addiction (IA) for a preliminary exploration of the possible mechanism of the therapy.</p><p><b>METHODS</b>One hundred and twenty patients with IA were randomly divided into three groups, and a total of 112 subjects reached the final analysis of the trial, the EA group (39 patients), the PI group (36 patients) and the CT group (37 patients). EA was applied at acupoints Baihui (GV20), Sishencong (EX-HN1), Hegu (LI4), Neiguan (PC6), Taichong (LR3) and Sanyinjiao (SP6), once every other day; PI with the cognitionbehavior mode was implemented every 4 days; both EA and PI were used in the CT group. The treatment course for all patients was 40 days. Changes before and after treatment in terms of scoring by the IA self-rating scale, short-term memory capacity, short-term memory span, and the latency and amplitude of P300 and MMN in patients were observed.</p><p><b>RESULTS</b>After treatment, in all groups, the IA score was lowered significantly (P <0.05) and scores of short-term memory capacity and short-term memory span increased significantly (P <0.05), while the decreased IA score in the CT group was more significant than that in the other two groups (P <0.05). ERP measurements showed that P300 latency was depressed and its amplitude raised in the EA group; MMN amplitude increased in the CT group (all P<0.05).</p><p><b>CONCLUSION</b>The EA in combination with PI could improve the cognitive function of IA patients, and its mechanism might be related to the speedup of cerebral discrimination on external stimulus and the enhancement of effective resource mobilization during information processing of the brain.</p>


Subject(s)
Female , Humans , Male , Young Adult , Behavior, Addictive , Psychology , Therapeutics , Cognition , Physiology , Combined Modality Therapy , Electroacupuncture , Methods , Event-Related Potentials, P300 , Physiology , Internet , Latency Period, Psychological , Memory, Short-Term , Physiology , Patient Dropouts
19.
Chinese Journal of Experimental Ophthalmology ; (12): 349-352, 2012.
Article in Chinese | WPRIM | ID: wpr-635645

ABSTRACT

Background Contrast sensitivity (CS) of amblyopia has been extensively studied,but its relationship with spatial frequency channels needs further research. Objective The purpose of this study was to investigate the reasons of the CS deficits in amblyopia through comparing the differences in CS between amblyopic and normal eyes from the point of view of spatial frequency channels. MethodsThe CS values of 166 normal children eyes and 143 amblyopic children abnormal eyes were measured by adopting OPTEC 6500.Then,spatial frequency channels' tuning curves were derived via principal component analysis and non-orthogonal rotation.Also,numbers and bandwidths of channels were calculated using the method of full width at half maximum ( FWHM ).All of these were used to analyze the variations of CS between amblyopia and normal eyes by comparing the numbers and the bandwidths of the channels.The reliability of spatial frequency channel was verified by a cross-validation study of 43 amblyopic children. ResultAt spatial frequency of 1.5,3.0,6.0,12.0,18.0 cpd,the mean of CS of amblyopia were 36.35±21.40,50.33 ± 33.46,46.88 ± 41.72,16.24 ± 17.26,4.67 ± 5.79,and the mean of CS of normal eyes were 49.49±24.69,87.23±40.87,93.18±51.99.36.63±24.72,15.70±13.87,with the rank-sum test results were H =27.83,66.61,68.34,78.23,89.88,P<0.05.There existed three spatial frequency channels in both amblyopia and normal eyes.At the peaks of 3.0,6.0 and 12.0 cpd,the bandwidths of normal eyes were 1.03,1.02 and 0.99 octaves,and the bandwidths of amblyopia were 1.04,1.01and 0.73 octaves.Conclusions The reduction in bandwidths of the corresponding spatial frequency channels may cause the CS deficits in amblyopia.

20.
Chinese Acupuncture & Moxibustion ; (12): 1093-1096, 2011.
Article in Chinese | WPRIM | ID: wpr-230535

ABSTRACT

Compatibility of acupoints is an important component of acupuncture prescription, and it is the key point to achieve the therapeutic effect of acupuncture. Antagonism and synergism are held as two possible results of acupoints compatibility. Recent literatures are summarized and analyzed in this article. And clinical trials and laboratorial studies indicate that antagonism is a result of acupoints compatibility. However, since the relative studies are not enough, extensive attentions are not aroused among researchers. Therefore, in the future studies, based on specificity of acupoints, interdisciplinary research methods should be adopted to explore the effect of antagonism of acupoint compatibility on enhancing the clinical therapeutic effect and expound the mechanism of acupuncture and moxibustion. It is considered to be a significant topic which is worth to be deeply studied.


Subject(s)
Animals , Humans , Acupuncture Points , Acupuncture Therapy , Physiological Phenomena
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