The Effects of Tea on the Cardiovascular System

2015 | Comments Off

Cardiovascular diseases, together with cancers, are the main killing diseases of humans in the world. Of the cardiovascular diseases, atherosclerosis is one of the most prevalent. Atherosclerosis is primarily caused by hypercholesterolemia in which excess cholesterol accumulates in the blood vessels and oxidation of low-density cholesterol (LDL) leads to foci of endothelial abnormalities associated with the process of atherosclerosis (). It deteriorates further with the oxidation of lipids in the blood. Therefore, in order to maintain the cardiovascular system in good condition, it is very important to prevent not only an excessive increase of cholesterols in the blood, but also the oxidation of lipids in the blood. Hypertension is another major factor that can affect the health of the cardiovascular system. In this article, the antioxidative, hypolipidemic, hypotensive and the obesity-depressing activity of tea will be discussed. Antioxidative Activity of Tea Blood-Pressure Lowering Activity of Tea Blood Lipid and Cholesterol Lowering Effect Excessive lipids in blood is a common disorder of middle aged or old aged men and women. High serum-lipid includes high cholesterol and triglyceride content in blood. The cholesterol Read more [...]

Antioxidative Activity of Tea

2015 | Comments Off

The role of free radical and active oxygen in the pathogenesis of certain human diseases, including aging, cardiovascular disease and cancer is becoming increasingly recognized. Lipid peroxidation has been regarded as one of the mechanisms of senescence of humans and the cause of atherosclerosis. Because of their very high chemical reactivity, free radicals show very short lifetimes in biological systems. However, the excessive amounts of free radicals are able to produce metabolic disturbances and to damage membrane structures in a variety of ways. Therefore, much attention has been focused on the use of antioxidants, especially natural antioxidants, to inhibit lipid peroxidation or to protect the damage of free radicals. Many investigations indicated that intake of certain amounts of fruits and vegetables that contain a large quantity of vitamin C and vitamin E showed antioxidative activity. Tea is not only rich in vitamin C and E, but also contains an important group of polyphenols, i.e., catechins, which display obvious antioxidative activity. The polyphenols are able to act as antioxidants by virture of the hydrogen-donating capacity of their phenol groups, as well as their metal-chelating potential (). As early Read more [...]

Blood-Pressure Lowering Activity of Tea

2015 | Comments Off

Hypertension is a common disorder in humans. Te a drinking can lower blood pressure. There are many Chinese traditional prescriptions, with tea as a major constituent, used in the treatment of hypertension and coronary disease in Chinese traditional medicine. A survey on the relationship between hypertension and tea drinking in 964 adults was carried out by Zhejiang Medical University of China during the 1970s. Results showed that the average rate of hypertension was 6.2% in the group who drank tea as habit, and 10.5% in the group who did not. Clinical experiments showed that hot water extract of green tea possessed a degree of blood pressure lowering effect. An experiment in vivo carried out on rats fed with diet supplemented with 0.5% crude catechins showed that the blood pressure in treated rats was 10–20 mm Hg lower than that in the control group (). A clinical experiment using green tea on high blood pressure patients was conducted at the Anhui Medical Research Institute of China. Results showed that a 10 g tea intake daily treatment over half a year, decreased the blood pressure by 20–30% (). A study was conducted to determine whether the effect in vitro is reflected in the lowering of blood pressure of Read more [...]

Obesity-Depression and Prevention of Cardiovascuear Disorders

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Excessive lipid induces obesity. This is a physiologically abnormal phenomenon in modern society. Obesity is closely related to excessive serum lipid. Experiments show that tea drinking plays an obesity-depressing role via an increase of fundamental metabolic rate and the degradation of fat. Investigations carried out by French, Japanese and Chinese scientists have also shown that Pu-Er tea and Oolong tea possess a significant obesity depressing effect (). Researches using different kinds of tea revealed that the serum lipid depressing and obesity depressing effects of compressed tea was greater than that of green tea and black tea (). High levels of blood cholesterol induce the deposit of lipid on the vessel wall and cause the constriction of coronary arteries, atherosclerosis and thrombus formation. It is related to the fact that tea drinking decreases the serum lipid and cholesterol level. In the past, atherosclerosis was thought to result from a level of serum cholesterol above 200dl and a relatively low level of high-density cholesterol and high level of LDL. Current views are that it is induced by the oxidation of low-density cholesterol cholesterol that leads to foci of endothelial abnormalities associated Read more [...]

Neem and Pollution

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Rapid industrialization, urbanization, and congestion of population in a few pockets, in most part of the world, are giving rise to pollution caused by emission of gases such as carbon monoxide, carbon dioxide, sulfur dioxide and nitrogen peroxide which may play havoc with the human population. In Indian culture, neem has been referred as an “air purifier” so it may be an avenue tree of choice in thickly populated areas, by its capacity to survive in adverse conditions, absorb some of the environmental pollutants, and act as an “air freshener” by releasing oxygen and mild odorous principles. Industrial Pollution Tanneries Tannery is one of the industries responsible for pollution of river water. In third world countries, in some areas, the cattle population exceeds that of humans, so an appreciable amount of animal hide is available which is treated with tanning materials to turn it into leather. The whole process requires repeatedly washing with water, so the water requirement is very high; after washing, this water becomes heavily contaminated and is drained back to the rivers. Chaturvedi () tested neem as one of the trees for tolerance to tannery waste water. The survival rate of the tree was 22–94 Read more [...]

Neem In Veterinary Practice

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Traditional Use It is a common practice to apply neem oil alone or along with cedar wood oil externally to cattle, for any type of skin disease of any pathogenicity and even on wounds. Sometimes the animal is also made to drink the oil. It is said that neem oil aids in healing the skin, and thus gives relief to infestation. While grazing in marshy areas, the hooves of cattle often get septic. In this case, the hoof is washed with a decoction of neem and dressed with neem oil; 20–30 ml of neem oil is administered daily. The above use of neem oil has been found useful by modern veterinarians also, and experiments have been conducted with neem oil or its compound preparations. For Skin Diseases Vijayan et al. () prepared Oil Bordeaux from copper sulfate, quick lime and neem oil. It was administered in doses of 4 ml by intramammary infusion for 7 days. Most of the cases of mastitis recovered. Neem oil was also tried in calves, experimentally infected with the protozoa Theileria annulata (). Antimicrobial activity was observed in a veterinary herbal antiseptic cream containing neem (). Neem oil was found effective in healing wounds in calves () and in camels (). In camels the healing process was evaluated by clinical Read more [...]

Traditional Uses of Neem

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The therapeutic efficacy of neem must have been known to man since antiquity as a result of constant experimentation with nature. Ancient man observed the unique features of this tree: a bitter taste, non-poisonous to man, but deleterious to lower forms of life. This might have resulted in its use as a medicine in various cultures, particularly in the Indian subcontinent and later on in other parts of the world. Ayurveda The word neem is derived from Sanskrit Nimba, which means “to bestow health”; the various Sanskrit synonyms of neem signify the pharmacological and therapeutic effects of the tree. It has been nicknamed Neta — a leader of medicinal plants, Pichumarda — antileprotic, Ravisambba — sun ray-like effects in providing health, Arishta — resistant to insects, Sbeetal — cooling (cools the human system by giving relief in diseases caused by hotness, such as skin diseases and fevers), and Krimighana — anthelmintic. It was considered light in digestion, hot in effect, cold in property. In earlier times, patients with incurable diseases were advised to make neem their way of life. They were to spend most of the day under the shade of this tree. They were to drink infusions of various parts of Read more [...]

Applications and Prescriptions of Perilla in Traditional Chinese Medicine

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Since the advent of "Shen Nong Ben Cao Jing" (Shen Nong's Herbal), the progenitor of herbals in traditional Chinese medicine, completed around 25 A.D., which classified herbal drugs into upper grade, mid-grade and lower grade, all subsequent herbals classified Chinese herbal drugs according to this tradition. The upper grade drugs are known as the imperial drugs which are non-poisonous and arc used mainly for nurturing our lives; the mid-grade drugs are known as the ministerial drugs which are either non-poisonous or poisonous and are used chiefly to nurture our temperament; and the lower grade drugs are known as the assistant or servant drugs which are used for treating disease and are mostly poisonous. In clinical diagnosis, a physician of traditional Chinese medicine will first consider the circulation of qi, blood and water. The so-called blood conformation in traditional Chinese medicine (a conformation in traditional Chinese medicine can be approximated to a symptom complex or syndrome in Western medicine) refers to "blood stasis" which is a poor blood circulation condition resulted from congestion or stagnation of blood in the body and may lead to formation of disease. A water conformation is also referred Read more [...]

Commonly used chinese herb formulas that contain Perilla

2015 | Comments Off

As mentioned above, Perilla is often used together with other Chinese herbs in many herb formulas, especially in the qi formulas used for treating neurotic disorders, and respiratory diseases. In addition, it is also commonly used as a diaphoretic for common cold. Some commonly used Chinese herb formulas that contain Perilla leaf are shown in Tables Commonly used traditional Chinese herb formulas that contain Perilla leaf and Chinese herb formulas that contain Perilla leaf as recorded in the pharmacopoeia of PRC. And some commonly used Chinese herb formulas containing Perilla seed or fruit are shown in Table Commonly used traditional Chinese herb formulas that contain Perilla seed. Table Commonly used traditional Chinese herb formulas that contain Perilla leaf Formula Source Number of Herbs Content (%) of   Perilla Leaf Pinellia and Magnolia Combination Jin-gui-yao-lue 5 10.0 Ephedra and Magnolia Combination Wai-tai-mi-yao 7 7.5 Cyperus and Perilla Formula Tai-ping-hui-min-he-ji-ju-fang 5 15.0 Ginseng and Perilla Combination Tai-ping-hui-min-he-ji-ju-fang 13 4.4 Dang-guei Sixteen Herbs Combination Wan-bing-hui-chun 16 5.3 Aquilaria and Perilla Formula Tai-ping-hui-min-he-ji-ju-fang 11 9.8 Citrus Read more [...]

A Clinical Investigation of Perilla Extract Cream for Atopic Dermatitis

2015 | Comments Off

Atopic dermatitis is one kind of allergic disease. Allergies are very closely associated with an immune response. When the human body is invaded by a foreign substance (antigen), antibodies or sensitised lymphocytes will be produced as a result of the response of the immune system. Later when the same antigen invades the body again, it will soon be eliminated or become harmless to the body. This is an immune response which is an indispensable function to prevent infection and tumours. However, sometimes the immune reaction between antigen and antibodies or sensitised lymphocytes can cause harm to the body itself. This kind of immune reaction in which antigen comes from outside the body causes allergic disease, whereas antigen which comes from the body itself causes auto-immune disease. According to the statistical investigation in 1992 by the Ministry of Welfare of Japan, 34% of the Japanese population suffer from some kind of allergy, and most of them are children between the age of 0 to 4. There is the tendency for allergic symptoms to appeal- as atopic dermatitis in childhood and to become asthma or rhinitis as they mature. The word atopy is derived from Greek () and means odd and thus atopic dermatitis is Read more [...]