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Cucumber-p1.html" target='_blank'>Sea Cucumber: FOOD AND MEDICINE

The pacific sea cucumber (Stichopus species and other members of the family Holothurioidea) has been revered by Chinese cooks since ancient times. In particular, sea cucumber meals have been offered on special occasions, especially New Year celebrations. An ancient Confucian recipe, translated roughly as "The Eight Immortals Crossing the Sea" and made with sea cucumber, shark's fin, and 5 kinds of fish and shellfish, is one of the classic banquet dishes. The sea cucumber is valued-along with several other delicacies, such as shark's fin, ginseng, cordyceps, and tremella-as a disease preventive and longevity tonic. It was listed as a medicinal agent in the Bencao Congxin (New Compilation of Materia Medica) by Wu Yiluo in 1757. The popular Chinese name for sea cucumber is haishen, which means, roughly, ginseng of the sea. It is often known in medical literature as fangcishen (fang = four-sided, ci = thorny; referring to the spiky protrusions that emanate from four sides) or, in abbreviated form, fangshen.

From the modern medical viewpoint, sea cucumber is a valuable source of several kinds of substances that can serve as natural health products, and, perhaps, be developed as drugs. Since sea cucumber is consumed as a food by a very small segment of the population outside East Asia, most people do not have access to its beneficial components. Thus, extracts of desired sea cucumber materials are put into easy-to-consume formats, such as capsules (hard and soft gelatin) and tablets.

Sea cucumber, having a cartilagenous body, serves as a rich source of mucopolysaccharides, mainly chondroitin sulfate, which is well-known for its ability to reduce arthritis pain, especially that of osteoarthritis As little as 3 grams per day of the dried sea cucumber has been helpful in significantly reducing arthralgia. Chondroitin's action is similar to that of glucosamine sulfate, the main building block of chondroitin.

Long-chain sulfated polysaccharides, like chondroitin, also inhibit viruses; there is a Japanese patent for sea cucumber chondroitin sulfate for HIV therapy based on this action, and other sulfated polysaccharides from seaweeds have been patented as inhibitors of herpes viruses. Chondroitin is usually obtained in commercial quantities from bovine trachea or shark cartilage (including the shark fin), while glucosamine sulfate is obtained from shells of shrimp and crab. These compounds are also found in deer antler, which is not a practical source for extraction due to its rarity and cost, but it is likely that glucosamine and chondroitin are significant contributors to the medicinal action of deer antler.

Russian, Japanese, and Chinese studies reveal that sea cucumbers also contain saponins (triterpene glycosides). These compounds have a structure similar to the active constituents of ginseng, ganoderma, and other famous tonic herbs. Pharmacology studies indicate anti-inflammatory and anticancer properties of the sea cucumber saponins. In addition, the sea cucumber oil contains two anti-inflammatory fractions. One fraction has fatty acids characteristic of those found in fish; they can be used as a substitute for fish oil in reducing inflammatory byproducts of fat metabolism, and to nourish the brain and heart. The main compounds of interest in fish oil are EPA (eicosapentaenoic acid also found in sea cucumber, and DHA (docosahaenoic acid), unique to fish.

 The other oil fraction is a mixture of branched chain fatty acids, mainly 12-MTA (methyltetradecanoic acid). This compound, and the more widely studied variant, 13-MTA, are potent inhibitors of the 5-LOX (lypoxygenase) enzyme system. 5-LOX inhibitors are one of the key areas of modern drug development, with plans evolving to use the compounds in treatment of asthma, ulcerative colitis, and arthritis. In addition, cancer-inhibiting effects have been observed in preliminary studies with prostate cancer cell lines and other human cancer cells These fatty acids are thought to be produced by bacteria that live within the sea cucumbers; they are also produced by bacteria in other marine organisms, such as sponges and tunicates.