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A method for establishing an animal model of osteoporosis combined with Alzheimer's disease and its application

A technology for osteoporosis and establishment of methods, applied in animal husbandry and other directions, can solve the problems of unknown drug interactions, unsatisfactory efficacy, strong toxic and side effects, etc., and achieve the effects of easy application and promotion, short experimental period and low cost.

Active Publication Date: 2021-09-28
CHINA PHARM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In clinical practice, the treatment of OP and AD is mostly based on drug combinations, but there are usually problems such as unsatisfactory curative effect, large dosage, strong side effects, and unknown drug interactions.

Method used

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  • A method for establishing an animal model of osteoporosis combined with Alzheimer's disease and its application
  • A method for establishing an animal model of osteoporosis combined with Alzheimer's disease and its application
  • A method for establishing an animal model of osteoporosis combined with Alzheimer's disease and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Construction of an animal model of osteoporosis combined with Alzheimer's disease

[0030] 1. Establishment of postmenopausal osteoporosis model

[0031] Eight-week-old female Wistar rats, SPF grade, underwent bilateral ovariectomy after adaptive feeding for one week. The anesthetized rats were fixed in the prone position, and the skin was prepared on the backs of both sides. First, cut a small incision with surgical scissors from one side of the back and abdomen, cut the skin, abdominal muscle, and peritoneum in sequence, and then peel off the fat tissue to find the reddish-brown cauliflower-like ovary, which is ligated with surgical sutures on the uterine horn and removed. Then the abdominal muscles and skin were sutured sequentially, and penicillin powder was applied externally to the wound. The other ovary was removed in the same way. In the sham operation group, only the same volume of adipose tissue near the ovary was removed, and other operations were the same...

Embodiment 2

[0072] Intervention Validation in Animal Models of Osteoporosis and Alzheimer's Disease

[0073] 1. Experimental method

[0074] Establish the Wistar rat osteoporosis combined with Alzheimer's disease animal model according to the method described in Example 1, treat the classic drug estradiol valerate of osteoporosis in clinic, namely Estradiol Valerate, be called for short EV, treat Alzheimer's disease Donepezil hydrochloride, the classic drug of Donepezil HCL, abbreviated as DPZ, was administered to the animal model of the present invention respectively. Among them, EV at a dose of 0.6 mg / kg / d and DPZ at a dose of 0.8 mg / kg / d were intragastrically administered during the Alzheimer's disease modeling stage. After continuous administration for 8 weeks, various quantitative indicators of osteoporosis and Alzheimer's disease were detected with reference to Example 1 of the present invention.

[0075] 2. Experimental results

[0076]In the Morris water maze test, compared wit...

Embodiment 3

[0079] Discovery of dual-effect drugs based on echinacoside, verbascoside and their combination based on animal models of osteoporosis and Alzheimer's disease

[0080] 1. Experimental method

[0081] According to the method described in Example 1, an animal model of Wistar rat osteoporosis combined with Alzheimer's disease was established, and EV and DPZ were respectively administered to the animal model of the present invention according to the method described in Example 2, as two groups of positive control groups. Candidate drugs echinacoside (ECH group), verbascoside (ACT group) and the combination of two monomer drugs (P1 group) were administered to the animal model of osteoporosis combined with Alzheimer's disease of the present invention respectively. Among them, the dose of 90 mg / kg / d in the ECH group, the dose of 90 mg / kg / d in the ACT group, and the dose of 1:1 ratio of ECH and ACT in the P1 group were given by intragastric administration during the Alzheimer's diseas...

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Abstract

This application provides a method for establishing an animal model of osteoporosis combined with Alzheimer's disease and its application. In this method, rats undergoing bilateral ovariectomy are used as experimental objects, and D-galactose is injected intraperitoneally, and AlCl is administered intragastrically at the same time. 3 , to obtain an animal model of osteoporosis combined with Alzheimer's disease. The application is the application of a method for establishing an animal model of osteoporosis combined with Alzheimer's disease in verifying the efficacy of drugs, wherein the drugs include drugs for the treatment of osteoporosis, drugs for the treatment of Alzheimer's disease, echinacea One or more of glycosides and verbascosides. The experimental period of this model is short, the success rate is high, the cost is low, and it is easy to replicate, apply and promote; it meets the requirements of animal models of osteoporosis and Alzheimer's disease, and this animal model of osteoporosis combined with Alzheimer's disease can be The research object is to explore the concurrent mechanism, early prevention and simultaneous treatment of osteoporosis and Alzheimer's disease, and it can also be used for the discovery and screening of a drug with multiple effects.

Description

technical field [0001] The invention relates to a method for establishing an animal model and its application, in particular to a method for establishing an animal model of osteoporosis combined with Alzheimer's disease. Background technique [0002] Osteoporosis (Osteoporosis, OP) and Alzheimer's Disease (Alzheimer's Disease, AD) are the most common geriatric diseases in clinical practice, and they are often complicated. Their complex pathological mechanisms have always limited the effective prevention and treatment of the two diseases. AD is a neurodegenerative disease characterized by the formation of senile plaques, neurofibrillary tangles, and neuron loss. OP is a systemic bone disease characterized by decreased bone density and degeneration of bone microstructure, resulting in increased bone fragility and increased risk of fracture. With the intensification of population aging, OP and AD have become important public health problems facing our country. The average pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/027
CPCA01K67/027A01K2207/25A01K2207/30A01K2227/105A01K2267/0312
Inventor 李飞陈毅李英祺李萍
Owner CHINA PHARM UNIV