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Tissue analysis by Fourier transform infrared (FTIR) imaging can determine the biodistribution of molecules,without pre-analytical modification. We aimed to study the infrared spectroscopic changes of a-helical proteinsat post-traumatic epileptic (PTE) foci by FTIR. FITR mapping was applied to detect a-helical proteins in ratbrain tissue samples with post-traumatic epilepsy. Histological examination of brain sections showed that therat model of PTE was successfully established. At the PTE foci, high a-helical absorption regions wereevident, where the color difference and absorption were significantly different from those in the low-absorptionregions. This provided a distinctive and characteristic pattern at the site of lesions. The use of FTIR imagingmeans that it is possible to measure the molecular structural changes resulting from PTE pathologies in tissues,providing a novel adjunct to conventional pathological diagnostic techniques.
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The article is study about range of motion on lower extremities on Guides to the Evaluation of Permanent Impairment. We reviewed the latest range of motion concept about lower extremities evaluation of GEPI. We also introduced measurement and procedure of range of motion evaluation. To provide advice for construction of disability evaluation system in China.
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Objective To investigate the relationship between K+ concentration in rabbit vitreous humor and postmortem interval (PMI) under different ambient temperature. Methods Rabbit corpses were stored at 5℃ , 15℃ , 25℃ , and 35℃ after execution, and 80~100μL vitreous humor was extracted from each eye of the rabbit in turn every 12 hours. The concentrations of K+ were examined by Modular DPPI automatic biochemistry analyzer. The Interpolation Functions were used to analyze the statistical relationship between PMI and K+ concentration under different temperature. Results In each animal group, K+ concentration increased with PMI. Equation was obtained after interpolation analysis on range of temperature 5℃ ~30℃ . The three-variable quintic surface equation was f(x,y)=-1.998e14+1.345e12x+5.902e13y+0.005585x2-4.509e11xy-3.876e12y2-0.0002868x3+0.003545x2y+4.406e10xy2-1.746e10y3+2.669e-6x4-1.568e-5x3y-0.0001771x2y2-1.64e9xy3+6.669e9y4-8.672e-9x5+4.467e-8x4y+2.354e-7x3y2+2.459e-6x2y3+2.05e7xy4-1.214e8y5(R2=0.9956), x stands for temperature, y stands for K+ concentration, f(x,y) stands for PMI. Conclusion The rule of K+ concentration changes at ambient temperature complied with three-variable quintic surface equation distribution. Measurement of interpolation function may be used for PMI estimation at different ambient temperature.
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The article is comparative study about spine and extremities on clause for the identification of the body injured and The classification of the body impairment. We reviewed the terms and provisions about spine and extremities as follows, amputation impairment, function impairment, and amputation impairment combined function impairment. This paper provides a comprehensive access and analysisofthe similarities and differences between the two standards.
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The article is study about principle of lower extremities on Guides to the Evaluation of Permanent Impairment. We reviewed the latest concept in lower extremities evaluation of GEPI, such as regional impairment, diagnosis based impairment and grade modifier. We also introduced maximum medical improvement and conversion from lower extremities impairment to whole person impairment. To provide advice for construction of disability evaluation system in China.
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Objective The article is to study on the detection of α-helix proteins in post-traumatic epileptogenic focus by FTIR-mapping. Methods Fourier transform infrared spectroscopy-mapping were applied to identifying α-helix by point-by-point scanning in post-traumatic epileptogenic focus sections and to develop FTIR-mapping profiles. Result The high absorbance of α-helix is accord with post-traumatic epilepsy, there are some significant differences between high absorbance and low absorbance. Conclusion α-helix proteins are distributed in post-traumatic epileptogenic focus widely, thus α-helix protein are involved in post-traumatic epilepsy.
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Objective To investigate the relationship between Ct value of mice liver and postmortem interval (PMI) under various ambient temperatures. Methods mice were stored at 10℃, 15℃, 20℃, 25℃ and 30℃ after execution, and total RNA was extracted from mice liver every 6 hours (PMI 6h to 72h). The levels of 18s rRNA were examined using real-time PCR. The results were expressed by cycle threshold (Ct) value to explore relationship between PMI and Ct value, and the interpolation functions were established to estimate PMI. Results In each group, Ct value increased with PMI increased. Surface equation was obtained after interpolation analysis on temperature range 10℃~30℃. The three-variable quintic surface equation was f(x, y)=-426.9+30.82x+44.48y-1.297x2-1.837xy-1.388y2+0.034 38x3+0.038 17x2y+0.038 67xy2+0.028 77y3-0.000 612 9x4-3.897e-7x3y-0.001 223x2y2+0.000 256 6xy3-0.000 537 4y4+3.606e-6x5-2.846e-6x4y+1.009e-5x3y2-3.439e-6x2y3-2.556e-7xy4+2.664e-6y5(r2=0.999 4). Conclusion The rule of Ct value changes at ambient temperature complied with three-variable quintic surface equation distribution. Measurement of interpolation function may be used for PMI estimation at ambient temperature.
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Objective It aims to investigate the relationships among the categories of Comprehensive Version for Stroke as described in the International Classiifcation of Functioning, Disability and Health (ICF) Core Set, and to provide new supports for Judicial Appraisal of functioning in stroke by ICF functioning mapping.Methods The variables of 59 categories of ICF assessment scale and the samples of 106 persons’ are selected and used in the least absolute shrinkage and selection operator (LASSO) for mining dependencies among those variables. The graphical modeling and analyzing with the software Gephi provides a visual map of the correlations among those classiifcations. Results 59 interconnected categories which organized into the functioning mapping. b340, b735, b175 and b152 are centrally positioned categories because of their high correlation.Conclusion Functioning mapping by graphical modeling can reveal complex relational structures embedded in functioning classiifcations, which provides the support for using ICF to appraisal stroke.
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The aim of the present study was to assess whether Fourier transform infrared spectrometry (FTIR) micro-spectroscopy could produce distinct spectral information on protein of old myocardial infarction (OMI) and to set them as molecular markers to diagnose atypical OMI. Paraffin-embedded heart samples were derived from victims dying of OMI. In combination with histological stain, FTIR and infrared micro-spectroscopy, the characteristics of OMI were analyzed morphologically and molecularly. The most relevant bands identified were the amide A, B, I and, II showing crucial spectral differences between apparent normal region and OMI region, including the peak position blue shift and the increased intensity of OMI, moreover relative increase in alpha-helix and decrease in beta-sheet of protein secondary structures in OMI. Comparing to single spectral band, the I1650/I1550 ratio was increased and rationally used as a molecular marker for diagnosing OMI. These novel preliminary findings supported further exploration of FTIR molecular profiling in clinical or forensic study, and were in accordance with histopathology.