Health science Ch 1

膝关节骨性关节炎（knee osteoarthritis ，KOA ）是一种以关节软骨破坏及骨质增生为主的伴有关节疼痛、肿胀、畸形及活动障碍的慢性关节疾病[1]。

据估计，2020年骨性关节炎在全世界范围内将成为第四大致残疾病[2]。

KOA 的病因和发病机制目前尚未完全明确，随着研究的深入，以信号通路为靶点进行研究KOA 的发病机制成为热点。

Notch 信号通路通过与靶基因Notch 1、Hes 1的结合，可以参与多种物质从细胞膜向细胞核的传递，介导如细胞生长、增殖及程序性死亡等过程[3]。

本研究通过对比KOA 软骨及正常软骨组织中Notch1、Hes1相关蛋白的表达，探讨其在骨性关节炎发生发展中的作用及其意义，拟为KOA 的诊断、治疗及其预后提供新的临床思路。

1材料与方法1.1一般资料标本收集自2018年3月1日—2019年2月28日宁夏医科大学总医院骨科，由同组手术医疗组骨科医师主刀，32例骨性关节炎标本均经术前体征、病史、X 线影像确诊，作为病例组。

其中女性20例，男性12例，年龄（53.32±9.22）岁；HE 染色结果通过采用改良的Mankin 评分标准[4]对关节软骨行病理分期：KOA 中期软骨组9例；KOA 晚期软骨组23例。

全部病例术前均未接受骨性关节炎针对性治疗。

对照组为16例膝关节内骨折切开内固定术中去除的部分软骨组织，其中女性6例，男性10例，年龄（45.32±11.22）岁，无骨性关节炎病史。

术前均经患者或家属知情，并签署知情同意书。

1.2主要试剂及仪器苏木素、番红O 、多聚甲醛；兔抗人Notch1单克隆抗体、兔抗人Hes1单克隆抗体（购自美国Abcam 公司），山羊抗兔IgG （购自北京中山金桥有限公司）；DAB 显色试剂盒、PBS 缓冲液、柠檬酸盐缓冲液（购自博士德生物工程有限公司）；Image Pro Plus 6.0图像分析软件（购自美国Me-dia Cybernetics 公司）；H6023i 显微镜及图像采集系统（购自德国Leica 公司），CFX Connect 定量PCR 仪（购自美国BIO-RAI 公司）。

健康科学英文作文英文：Health science is an important field that encompasses a wide range of topics related to human health and well-being. As someone who is interested in this field, I believe that there are a number of key factors that contribute tooverall health and wellness.First and foremost, a healthy diet is essential for maintaining good health. This means eating a balanced diet that includes plenty of fruits, vegetables, whole grains, and lean protein sources. In addition, it is important to limit the intake of processed foods, sugary drinks, andother unhealthy foods that can contribute to weight gainand other health problems.Exercise is also a crucial component of good health. Regular physical activity can help to improvecardiovascular health, strengthen muscles and bones, andreduce the risk of chronic diseases such as diabetes and cancer. There are many different types of exercise that can be beneficial, including cardio workouts, strength training, and yoga.Another important factor in maintaining good health is getting enough sleep. Sleep is essential for proper brain function and overall physical health. It is recommendedthat adults get at least 7-9 hours of sleep per night, although individual needs may vary.Finally, it is important to manage stress and maintain good mental health. Stress can have negative effects onboth physical and mental health, so finding healthy ways to cope with stress is essential. This can include activities such as meditation, yoga, or spending time with friends and family.Overall, there are many different factors thatcontribute to good health and wellness. By focusing on a healthy diet, regular exercise, adequate sleep, and stress management, individuals can take control of their healthand improve their overall well-being.中文：健康科学是一个重要的领域，涵盖了与人类健康和福祉有关的广泛主题。

Trends in Health Care
Aging Population
– By 2005, one of every two adults will be 45 years or older
– Baby Boom (1946 – 1964) – The elderly require more
History of Health Care
Renaissance (1300 – 1600 AD)
– Scientific Method came into use
Process used to acquire new knowledge instead of guessing or supernatural. Based on observation, taking careful notes.
(medical asepsis) – Discovery of pathogens, anesthesia
History of Health Care
• Modern times (1900 – present) – Hospitals were places for people to go to die – Advances in engineering, chemistry, physics – Antibiotics & other medications invented – X-rays – Organ transplants, artificial organs – In vitro fertilization – Research, technology, and computers
• 1928 – Sir Alexander Fleming discovers penicillin.

2 Shen Nung, the Red Emperor (Hung Ti), compiled the first medical herbal, the Pen-tsao (c. 2800 B.C.), in which he reported the effects of 365 drugs, all of them personally tested.
Healthcare reform in China
A barefoot doctor examines a child.
The Comparison Of Several Countries’ Health Care
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The New Rural Co-operative Medical Care System (NRCMCS) particularly intended to make it more affordable for the rural poor
3 Chang Chung-ching, the Chinese Hippocrates, in the third century A.D., wrote the classic treatise Typhoid and Other Fevers.
4 Compendium of Materia Medica, also known Bencao Gangmu , is aChinese materia medica work written by Li Shizhen during the Ming Dynasty
Health care in Germany
Law-enforced health insurance" (Gesetzliche Krankenversicherung) and "Private" (Private Krankenversicherung). Compulsory insurance applies to those below a set income level and is provided through private non-profit "sickness funds" at common rates for all members, and is paid for with joint employer-employee contributions.