RESUMO
OBJECTIVE@#To explore hematological and genotypic characteristics of patients with hemoglobin E (Hb E) disorders from Yunnan Province.@*METHODS@#One hundred individuals with Hb E disorders indicated by high performance liquid chromatography (HPLC) were subjected to genetic testing through multiple gap-PCR and reverse dot-blotting analysis.@*RESULTS@#All patients were found to harbor a mutation to the 26th codon of the β -globin chain (HBB: c.79G>A). Ninety patients were heterozygotes, and 10 co-inherited c.79G>A and an α -thalassemia mutation (7 α α /-α, 2 α α /-- and 1 -α /-α). Hematological characteristics of the heterozygotes were: Hb A2 (26.02±3.64)%, Hb F(1.35±1.25)%, MCV(78.83±4.68) fl, MCH(26±1.54) pg, MCHC (329.65±10.73) g/L, HGB (141.08±16.53) g/L, while that of the co-inherited cases was decided by the type of α -thalassemia mutation.@*CONCLUSION@#Hb E can be effectively detected by HPLC. The type of α -thalassemia mutations will determine hematological features of co-inherited cases. Hb E disorders may be missed by relying only on routine blood test upon prenatal screening.
Assuntos
Feminino , Humanos , Gravidez , China , Genótipo , Hemoglobina E , Genética , Mutação , Talassemia alfa , Genética , Globinas beta , GenéticaRESUMO
Objective@#To explore hematological and genotypic characteristics of patients with hemoglobin E (Hb E) disorders from Yunnan Province.@*Methods@#One hundred individuals with Hb E disorders indicated by high performance liquid chromatography (HPLC) were subjected to genetic testing through multiple gap-PCR and reverse dot-blotting analysis.@*Results@#All patients were found to harbor a mutation to the 26th codon of the β-globin chain (HBB: c. 79G>A). Ninety patients were heterozygotes, and 10 co-inherited c. 79G>A and an α-thalassemia mutation (7 αα/-α3.7, 2 αα/--SEA and 1 -α3.7/-α3.7). Hematological characteristics of the heterozygotes were: Hb A2 (26.02±3.64)%, Hb F(1.35±1.25)%, MCV(78.83±4.68) fl, MCH(26±1.54) pg, MCHC (329.65±10.73) g/L, HGB (141.08±16.53) g/L, while that of the co-inherited cases was decided by the type of α-thalassemia mutation.@*Conclusion@#Hb E can be effectively detected by HPLC. The type of α-thalassemia mutations will determine hematological features of co-inherited cases. Hb E disorders may be missed by relying only on routine blood test upon prenatal screening.
RESUMO
Objective To propose a method for equipment parameter demonstration to improve whole-life cycle management of equipment.Methods The measures and principles of equipment parameter demonstration were put forward based on its present situation and problems.The significance of equipment parameter demonstration for whole-life management was discussed from the aspects of biding,bidding evaluation and post-procurement management.Results The method enhanced equipment procurement,saved human resource,materials and economic cost,and solved the problems such as single source,unutilized equipment and high maintenance cost.Conclusion The method of equipment parameter demonstration maximizes the benefits,and promotes whole-life management of medical equipment.
RESUMO
Objective To complete an information chain to support stomatological materials purchase and providing manage-ment.MethodsThe main problems of the materials management information chain were analyzed.The system construction,technical architecture and function design were designed based on B/S and C/S structure.Results The vendor cloud platform completed the information chain for purchase and distribution of stomatological materials,and provided technical support to hospital consumables management.Conclusion The system normalizes stomatological materials management,guarantees the safety,timeliness and accuracy of materials supply,and thus is worthy applying practically.
RESUMO
Objective:To research on the genetic polymorphism distributions of fifteen short tandem repeat ( STR ) loci (D8S1179,D21S11,D7S820,CSF1PO,D3S1358,TH01,D13S317,D16S539,D2S1338,D19S433,VWA,TPOX,D18S51,D5S818, FGA) in Han race of Yunnan. Methods:A total of 313 specimens were collected from the unrelated individuals in Yunnan Han popu-lation. Genome DNA was extracted and amplified by multiplex PCR technique,the PCR products were analyzed by ABI-3130 genetic analyzer capillary electrophoresis detection, collected statistics of each STR loci genotypic frequency, and carried out the Hardy-Weinberg Genetic balance test. Results: No significant deviation from the Hardy-Weinberg Equilibrium was observed ( P>0. 05 ) , the heterozygosity of the fifteen STR loci in Yunnan Han population were found to be 0. 636-0. 901, Probability match was 0. 034-0. 220. Discrimination power of signal STR loci was 0. 780-0. 966, power of paternity exclusion was 0. 336-0. 797, polymorphism information content was 0. 555-0. 860,the combined accumulation discrimination power and exclusion probability for the 15 STR loci in Yunnan Han population were determined to be more than 0. 999 999 99 and 0. 999 998 408. The allele frequency of the 15 STR loci had a similarity compared with other areas in China,but also had a slight regional differences. Conclusion: The 15 STR loci( D8S1179, D21S11,D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, VWA, TPOX, D18S51, D5S818, FGA ) demonstrate high genetic polymorphism in Yunnan Han population, they have a high forensic science application value in paternity testing and individual identification.
RESUMO
Aiming at the disadvantages of traditional medical high value consumable management mode, bar code management is the only way which must be passed to the high value consumables in hospital management under the new situation. The bar code management system development in theMilitary Medical Projectmaterials management platform, scientific optimization of high value consumables management process, fully embodies the characteristics and advantages of bar code management. Not only to achieve a one relation between the high value consumables and patients, can also be integrated management supplies out of storage, charging and the financial sector, to achieve high value. The bar code in the ID, is the only identity code high value consumables, which maintained the patient's vital interests, and ensure that the hospital infection control requirements, the high value consumables in hospital benigndynamicmanagement system.
RESUMO
Objective To quantify the effect of 650 nm semiconductor laser irradiation on cutaneous wound healing in rabbits. Methods Model wounds were induced in 21 adult male rabbits. They were then divided randomly into a control group, a 5 mW irradiation group and a 10 mW irradiation group. Biometry and light microscopy were used to investigate the effect of low intensity laser therapy (LILT) on cutaneous wound healing. Results Statistically significant differences were observed among the groups in terms of wound shrinkage. The differences between the irradiated and control groups were significant at the 5th, 9th and 13th day. However, any differences between the S mW and 10 mW groups were not significant. Conclusions LILT at 650 nm at either 5 mW or 10 mW and 1 J/cm2 accelerates cutaneous wound healing in rabbits. But irradiation at 10 mW is no more effective than at 5 mW.
RESUMO
Objective: This paper summarized the research status and progress of photodynamic therapy (PDT) and sonodynam-ic therapy (SDT), and we hope this can be a useful reference for clinics or research. Methods: In this review we expound their molecular mechanisms in detail and classify the photosensitizer and sonosensitizer, indicate their applications for the cancer treatment and summarize their new treating modes. PDT and SDT have huge potential for cancer treatment. Results: PDT and SDT have achieved a certain results, whereas there are still many problems, such as tissue oxygen content, new photosensitizer and sonosensitizer, drug dosage and mechanisms of SDT. Conclusions: PDT and SDT, which are new methods for treating cancer, have shown a good application prospect. But PDT has not been universal in clinics and SDT is still in the experiment stage.
RESUMO
In order to meet the needs of training high-quality medical persons, combining teaching reform theory with foundational courses teaching practice, we summarize some successful experience in many respects such as construction and reformation of foundational educational system, grasping subject construction goal, bringing up and cultivating scientific researchers, improving experimental conditions. All we have done reveal that the combination of medicine and engineering is the characteristic form of development.
RESUMO
@#ObjectiveTo identify differential genes of malignant melanoma using gene chip expression profiles.MethodsAgilent Human 1A OligoDNA was employed to find out difference in gene expression between malignant melanoma and nevus. The total RNA was isolated from two type tissues, labled the fluorescent to the probe, hybridized, washed and analyzed.ResultsAmong the 21073 target genes, 1596 genes were differentially expressed in malignant melanoma, including 733 genes up-regulated, and 863 down-regulated.ConclusionThe gene chip technique can screen genes that may be specifically expressed in malignant melanoma.
RESUMO
In order to further research into the EEG information of rats epileptic model, we applied different nonlinear dynamic methods. After having analyzed the EEG signal of rat falling sickness by means of approximate entropy and correlation dimension, we adopted a the new method, unstable periodic orbits, which was used to analyze complex activity of neurons system to look for the change regularity of change in the EEG signal in the whole course of rat's falling sickness. We found period 1 orbits and period 2 orbits to be statistically significant in the data of ictal time of epilepsy. At the same time, we found period 1 orbits to be statistically significant in the data of preictal time of epilepsy.
Assuntos
Animais , Ratos , Modelos Animais de Doenças , Eletroencefalografia , Entropia , Epilepsia , Dinâmica não Linear , Processamento de Sinais Assistido por ComputadorRESUMO
BACKGROUND: The dynamic characteristics of electroencephalogram (EEG) include a decrease in the chaotic dimension, the correlation dimen sion, the Lyapunov exponent, the chaotic complexity, the freedom of EEG and an enhanced synchronization and periodicity of the EEG from several minutes to tens of minutes before epileptic seizures. All these characteristics prefigure the forthcoming seizures. Some studies have proven that the non linear dynamical system can be used as a feasible approach to explore the potential variables for describing the chaos portrait of EEG. OBJECTIVE: To analyze the electric characteristics of EEG signal in the epileptic seizures in rat model by investigating the nonlinear dynamical variables, such as the approximate entropy (ApEn) and correlation dimen sion. DESIGN: Observational and experimental study based on animals. SETTING: Department of Medical Engineering, Department of Gastroen terology, Second Artilleryman General Hospital of Chinese PLA; Department of Physics, Faulty of Biomedical Engineering, Fourth Military Medical Uni versity of Chinese PLA. MATERIALS: From September 2001 to January 2002, this study was conducted at the Complexity Laboratory of the Biomedical Department of the Fourth Military Medical University of Chinese PLA. Six male SD rats,weighing 150- 200 g, were selected.INTERVENTIONS: After intraperitoneal injection of chloral hydrate (0. 5 mL), the male SD rats were deeply anesthetized. When their EEG signal became stable, bemegride injection was diluted at 1:1 with saline and was given on a volume of 0.5 mL to the rats intraperitoneally. After a while,the epileptic seizures started marked by a spasm with a deep roar. The entire epileptic seizures were recorded. According to the shape of EEG waves and the corresponding symptoms of the rats during their seizures, data of the four phases, referring to normal condition, preictal phase, ictal phase and postictal phases of epileptic seizures, were selected for nonlinear analysis. The variations of the ApEn and the correlation dimension were calculated.MAIN OUTCOME MEASURES: In the four phases of the seizures, before seizures, preictal phase, ictal phase and postictal phases, the changes in the ApEn and correlation dimension were observed.RESULTS: All the 6 rats entered the statistical procedure. During epilepsy, the ApEn and correlation dimension of the EEG signal in ictal phases (0. 447 ±0. 126, 2. 166 ±0. 377) decreased significantly while those in preictal phases(0. 807 ±0. 182, 4. 773 ±0. 319) and postictal phases (1. 241 ±0. 125, 6. 042 ±0. 373) (t = -3. 984to 17. 902, P ＜0. 01). The ApEn and the correlation dimension of the EEG signal in preictal and ictal phases had significant difference with those observed under normal conditions (1.313 ± 0. 090, 6. 405 ± 0. 694) (t = -5. 228 to 12. 740, P ＜ 0. 01 ).CONCLUSION: The changes in ApEn and correlation dimension showed by nonlinear dynamical approach in this study reflect the characteristics of EEG signals in preictal time, ictal time and postictal timeof the epileptic seizures and the differences among them. Additionally, they also reveal the laws in the changes of the complex ictal EEG signal.
RESUMO
This design is a multi-point thermometry system based on single bus digital thermometer DS1820.The single bus system of multi-point measure temperature is developed with single chip computer 89C52 and circuit units for physiological signal measurement.Obtainment method of higher resolution temperature data is given.The method makes measure temperature resolution reach to 0.1?C.It is characterized by simplicity of structure,high precision and real time,and is easy to transmit by internet network.So the system has widely applications value on clinic.
RESUMO
Based on the physical characteristic of ultrasound, the images of body tissues can be obtained through ultrasonic medical technology, which is another flourishing cross-linked branch of BME after X ray technology. Being non-invasive, painless and reusable, ultrasonic medical technology is suitable for the examination and treatment of the soft tissue. This paper introduces such of ultrasonic technology as its basic principle, developing prospect and application to clinical medicine.
RESUMO
Objective To solve the problems of low power laser instrument with single wavelength and instable output power as well as its incapability of studying the biological effect of low intensity laser and clinical treatment. Methods The AT89S52 singlechip and PID algorithm were used. Results The desired instrument could output the wave of 532nm green laser which could be adjusted continuously from 0mW to 30mW and the wave of 650nm red laser which could be adjusted continuously from 0mW to 50mW. The error of power could be controlled within 0.1mW. Conclusion The instrument can be used to study the biological effect of low intensity laser and clinical treatment with small volume,easy operation and high stability of laser output.
RESUMO
In this paper,a pulsed magnetic fields stimulation instrument is designed and realized,which provides a pulsed magnetic field with the range of maximal intensity from 0.01~2T,frequency from 0.2~100Hz and time width of pulse from 0.01~1ms.The instrument,controlled by the hand,foot or itself,can display stimulus intensity and times and output trigger signals with different waveforms to make measuring devices operate synchronistically.
RESUMO
Low-power laser irradiation has an excellent effect when applied clinically. But existing laser apparatuses have many disadvantages such as inconvenience. So, this paper develops an intelligent semi-conductor laser therapeutic apparatus and introduces its hardware structure and software design as well as its test and clinical application.
RESUMO
PBL teaching model has been adopted as one of mainstream models in the west medical education.This article,with the characteristics of medical physics,combined with the advantage of PBL,discusses how PBL teaching mode is applied to medical physics.What we have done provides a reference for the development of PBL in medical physics.
RESUMO
The aim of this study was to develop a new method of epileptic prediction using nonlinear dynamic theory. When rat was falling sickness, its EEG was researched by using approximate entropy and correlation dimension. The results showed the approximate entropy and correlation dimension during epileptic seizure are obviously lower than those before seizure and after seizure. The span of time before seizure is a special phase. Before the seizure symptom appeared, the complexity of EEG had begun declining. Thus, the outbreak of epilepsy could be predicted in short time using nonlinear dynamic methods.
Assuntos
Animais , Masculino , Ratos , Algoritmos , Modelos Animais de Doenças , Eletroencefalografia , Entropia , Epilepsia , Diagnóstico , Dinâmica não Linear , Ratos Sprague-Dawley , Processamento de Sinais Assistido por ComputadorRESUMO
In this paper, We designed and accomplished a low frequency pulsed strong magnetic fields generator, which provides a pulsed magnetic field with the intensity range from 0.1-2.5 T and the adjusted time interval of pulse. This device is easy to operate and performs reliably. It can work steady for a long time and has been successful used in the experiments of biological effects of electromagnetics.