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Application of Apelin protein in preparation of reagent for diagnosing respiratory system diseases

A technology for respiratory diseases and diagnostic reagents, applied in the field of medical testing, can solve the problems of serious illness, reduce the fatality rate, and increase the mortality rate of patients, and achieve the effect of improving the specificity of detection

Active Publication Date: 2021-04-27
温州医科大学慈溪生物医药研究院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although after nearly half a century of research, people have a deep understanding of the pathogenesis, pathophysiology, diagnosis and treatment of acute lung injury, but the mechanism of acute lung injury is very complex, involving infection, inflammation, immunity and tissue Most of the patients are already in the severe stage of acute lung injury when they see a doctor, which is very difficult in the clinical diagnosis and treatment. is less than 30 times / min), its oxygenation index is generally between 200-300mmHg, the body is not seriously hypoxic, and can basically meet the normal needs of organ functions or the body's various organ functions are in the compensatory period. The symptoms of patients in this stage are not typical, which are often ignored by clinicians. If they cannot be effectively identified and effective intervention measures are taken, patients tend to develop in a more serious direction and develop into the stage of ARDS with typical symptoms. serious, the mortality rate increased significantly
At present, there is still no effective method for early identification of acute lung injury and reduction of mortality in clinical practice

Method used

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  • Application of Apelin protein in preparation of reagent for diagnosing respiratory system diseases
  • Application of Apelin protein in preparation of reagent for diagnosing respiratory system diseases
  • Application of Apelin protein in preparation of reagent for diagnosing respiratory system diseases

Examples

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Embodiment 1

[0023] animal experiment modeling

[0024] Establishment of a mouse model of acute lung injury induced by cecal ligation and puncture (CLP)

[0025] Adult C57 mice (10) were anesthetized by intraperitoneal injection of 100 μl 1.5% sodium pentobarbital, fixed on the operation board, shaved the abdomen with pet electric clippers, disinfected the skin, and made a 1cm long incision in the middle of the abdomen , ligate the cecum, puncture with a 26-gauge syringe needle, and finally suture the wound and disinfect the skin. (See Daniel Rittirsch, Peter A Ward, et al. Immunodesign of experimental sepsis by cecal ligation and puncture. NatProtoc. 2009; 4(1):31–36)

[0026] Establishment of lipopolysaccharide (LPS)-induced acute lung injury model in mice Adult C57 mice (10) were anesthetized by intraperitoneal injection of 100 μl 1.5% pentobarbital sodium, fixed on the operation board, and the neck was covered with a pet Shave with electric clippers, disinfect the skin, make a 1cm lo...

Embodiment 2

[0044] In May 2019, 12 patients with acute lung injury and 12 patients with chronic obstructive pneumonia in the emergency room of the First Affiliated Hospital of Wenzhou Medical University were selected as positive controls (note: all selected patients were clearly diagnosed). The isolated serum samples were taken to detect Apelin-13, GP73 and Cys-C with ELISA (enzyme-linked immunosorbent assay) kit method. The results showed that in 12 patients with polar lung injury, Apelin-13, GP73 and Cys-C In 10 cases, C exceeded the normal value at the same time, and in the other two cases, Apelin-3 and GP73 exceeded the normal value at the same time but Cys-C was normal. In the patients with chronic obstructive pneumonia as the positive control group, none of Apelin-13, GP73 and Cys-C exceeded the normal value at the same time. This shows that the use of Apelin-13, GP73 and Cys-C as diagnostic markers for acute lung injury has high specificity.

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Abstract

The invention discloses an application of Apelin protein in preparation of a reagent for diagnosing respiratory system diseases. What is found for the first time is that the combination of Apelin-13, especially Apelin-13, GP73 (Golgi Transmembrane Glycoprotein) and Cys-C (cystatin C), can be used as a diagnostic marker for diagnosing respiratory system diseases, especially acute lung injury, and the detection specificity of acute lung injury can be effectively improved.

Description

technical field [0001] The invention belongs to the field of medical detection, in particular to the application of Apelin protein in the preparation of reagents for diagnosing respiratory diseases. Background technique [0002] Respiratory system disease is a common and frequently-occurring disease. The main lesions are in the trachea, bronchi, lungs, and chest cavity. Mild cases often cause coughing, chest pain, and respiratory problems. Severe cases have dyspnea, hypoxia, and even death due to respiratory failure. The death rate in the city is the third, while in the countryside it is the first. What should be paid more attention to is that due to air pollution, smoking, population aging and other factors, chronic obstructive pulmonary disease (referred to as COPD, including chronic bronchitis, emphysema, pulmonary heart disease), bronchial asthma, lung cancer, The morbidity and mortality of diseases such as pulmonary diffuse interstitial fibrosis and pulmonary infection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/68G01N33/74
CPCG01N33/6893G01N33/74G01N2333/8139G01N2333/47G01N2800/12G01N2800/125
Inventor 孔晓霞张宏宇肖健张海邻
Owner 温州医科大学慈溪生物医药研究院
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