1.Development of the Intracranial Pressure and Intracranial Temperature Monitor and Experimental Research on Trauma
Yan ZHANG ; Yubing LIU ; Yanbai XUE ; Yameng ZHANG ; Weitao LI ; Tianming YANG ; Zhiyu QIAN
Chinese Journal of Medical Instrumentation 2017;41(2):107-109,116
Objective A set of intracranial pressure and intracranial temperature monitor was developed. Moreover, it was verified to be effective in the monitoring of intracranial parameters by designed experiments.Methods The intracranial pressure and intracranial temperature monitor was tested in the water bath comparing with the Codman intracranial pressure monitor and mercury thermometers. As wel, the monitor was applied in the monitoring of rat brain edema in vivo.Results The maximum error is less than 266.64 Pa in the intracranial pressure measurement compared to the Codman intracranial pressure monitor, and the maximum error is less than 0.3oC in the temperature measurement according to mercury thermometers. Furthermore, the monitor could real-time obtain the intracranial pressure and intracranial temperature in the brain edema in vivo.Conclusion The intracranial pressure and intracranial temperature monitor realizes the real-time in vivo monitoring of intracranial pressure and intracranial temperature. The measurement accuracy meets the acquirement of doctors. The instrument has potential for clinical use.
2.Development of Diffuse Reflectance Spectroscopy Detection and Analysis System for Cervical Cancer.
Yanbai XUE ; Yuemei ZHAO ; Liuye YAO ; Weitao LI ; Zhiyu QIAN
Chinese Journal of Medical Instrumentation 2019;43(3):157-161
Cervical cancer is a common female malignant tumor. It has been increasing and rejuvenating in recent years. Early screening of cervical cancer is an effective control method to block cancer. In this study, a diffuse reflectance spectrum detection and analysis system based on LabWindows development software and MariaDB database was developed, which can acquire and save the spectral data to the database. The method of a neural network model based on spectral database was built to distinguish the cervical tissue and the normal tissue. The nude mouse tumor model test and human volunteer test were performed respectively, which verified that the system can distinguish between normal tissue and tumor tissue, and can be applied to the screening of cervical precancerous lesions.
Animals
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Female
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Humans
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Mice
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Mice, Nude
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Neural Networks (Computer)
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Spectrum Analysis
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Uterine Cervical Neoplasms
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diagnostic imaging
3.Development of Blood Flow and Oxygen Monitoring System for Mice Based on Laser Speckle and Spectrum.
Yuemei ZHAO ; Yanbai XUE ; Yan ZHANG ; Weitao LI ; Zhiy QIAN
Chinese Journal of Medical Instrumentation 2019;43(1):1-4
simultaneous monitoring of blood flow and changes of concentration of oxyhemoglobin (ΔHbO) in brain is a key important method for the research of cerebrovascular disease. In this study, a new monitoring system, combining laser speckle contrast imaging method and spectral analysis method, was proposed, which could be utilized to measure the cerebral blood flow and ΔHbO on mice during traumatic brain injury. The principle of the present system was studied and the hardware platform of the detection system was built. Then, user interface software and algorithms were implemented based on Labview and Matlab software. Finally, the performance of the present system was verified by the experiments.
Algorithms
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Animals
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Blood Gas Analysis
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instrumentation
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Brain
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Cerebrovascular Circulation
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Lasers
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Mice
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Oxygen
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analysis
4.Recent advances in developing small-molecule inhibitors against SARS-CoV-2.
Rong XIANG ; Zhengsen YU ; Yang WANG ; Lili WANG ; Shanshan HUO ; Yanbai LI ; Ruiying LIANG ; Qinghong HAO ; Tianlei YING ; Yaning GAO ; Fei YU ; Shibo JIANG
Acta Pharmaceutica Sinica B 2022;12(4):1591-1623
The COVID-19 pandemic caused by the novel SARS-CoV-2 virus has caused havoc across the entire world. Even though several COVID-19 vaccines are currently in distribution worldwide, with others in the pipeline, treatment modalities lag behind. Accordingly, researchers have been working hard to understand the nature of the virus, its mutant strains, and the pathogenesis of the disease in order to uncover possible drug targets and effective therapeutic agents. As the research continues, we now know the genome structure, epidemiological and clinical features, and pathogenic mechanism of SARS-CoV-2. Here, we summarized the potential therapeutic targets involved in the life cycle of the virus. On the basis of these targets, small-molecule prophylactic and therapeutic agents have been or are being developed for prevention and treatment of SARS-CoV-2 infection.