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Biomedical subjects

H Friedrich

Publications and source records attributed to H Friedrich.

132 records · Page 8Linked to original sources
PubMedDate not supplied

[Radical surgery and vertebral body replacement in aneurysmal bone cysts of the spine].

6 cases of aneurysmal bone cyst of the spine are presented. The clinical picture, diagnostic procedures and operative treatment will be discussed. Although aneurysmal bone cyst is a benign, non-neoplastic lesion its spreading tumor growth with destruction of important bony structures of the vertebral body, consecutive instability and cord compression presents a considerable menace to the mostly teenage-patient. Spinal computerized tomography is the diagnostic method of choice. The goal of surgical therapy of the aneurysmal bone cyst of the spine should include radical tumor excision in order to avoid recurrent tumor growth followed by vertebral body replacement and osteosynthetic stabilisation.

Adolescent↗
PubMedDate not supplied

Phenylpropanoid constituents of essential oils.

While the major constituents of essential oils are generally mono- and sesquiterpenes, in certain plant families or genera phenylpropanoid compounds are also found in the essential oil, sometimes as the main component. A survey is given of the distribution of these substances, as well as of their structural properties and biochemical origin. In particular, cinnamic acid not only occurs in some cases as a constituent of essential oils, but together with p-hydroxycinnamic acid is the most important metabolic intermediate in the pathways leading to the volatile phenylpropanoids found in these essential oils. These compounds are mostly phenolics, and often occur as their non-volatile glycosides. However, after enzymatic cleavage, which happens frequently during catabolic or postmortal processes, the resulting aglycones, which are not normally components of the essential oil, act as the carriers of flavors and fragrances. These compounds too are included in the survey.

Chemical Phenomena↗