inversion axis
inversion axis In
crystallography, an
axis of symmetry which can be inverted through 180° about its centre in order to achieve a higher degree of symmetry for the crystal. Thus, an axis of two-fold symmetry on inversion every 90° becomes an axis of four-fold symmetry. An inversion axis also obviates the need for a
centre of symmetry. The notation used to indicate an inversion axis is a ‘bar’ above the maximum number of repeat positions, e.g. 2̄ and 4̄ for a two-fold and four-fold inversion axis respectively.
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Local and systemic parathyroid hormone improves bone regeneration.
Magazine article from: Women's Health Weekly; 1/1/2004; 700+ words
; ...Local and systemic parathyroid hormone improves bone regeneration...the United States, "parathyroid hormone is one of the...rats, parathyroid hormone-injected rats showed...systemic and local parathyroid hormone led to higher...
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Substernal oxyphil parathyroid adenoma producing PTHrP with hypercalcemia and normal PTH level.(Case report)(parathyroid hormone)
Magazine article from: World Journal of Surgical Oncology; 2/21/2008; ; 700+ words
; ...hypercalcemia and elevated levels of parathyroid hormone (PTH); additional laboratory...distinguish PHPT from non-parathyroid-dependent hypercalcemia...patients with PHPT have a single parathyroid adenoma [1] that is ectopic...
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An N-Terminal Molecular Form of Parathyroid Hormone (PTH) Distinct from hPTH(1-84) Is Overproduced in Parathyroid Carcinoma
Magazine article from: Clinical Chemistry; 8/1/2007; ; 700+ words
; Background: A new parathyroid hormone (PTH) species, the N-terminal...N-PTH is also overproduced in parathyroid cancer and whether N-PTH concentration...Methods: We studied 8 patients with parathyroid carcinoma before and at week 16...
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Growth, Parathyroid Hormones Studied to Promote Bone Formation.(treatment of idiopathic osteoporosis in men)
Magazine article from: Internal Medicine News; 9/1/2001; ; 700+ words
; ...approaches to osteoporosis include growth hormone for men, self-injected recombinant parathyroid hormone, and a new third-generation selective...advantages. With regard to recombinant human parathyroid hormone (PTH), Dr. William H. Scheele...
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The parathyroid glands, primary and secondary hyperparathroidism and assays for parathyroid hormone.(Clinical report)
Magazine article from: Journal of Continuing Education Topics & Issues; 8/1/2007; ; 700+ words
; Background The four parathyroid glands are bean-sized organs...gland. These glands synthesize parathyroid hormone (PTH or parathormone) which helps...Hyperparathyroidism exists when a parathyroid gland becomes overactive and produces...
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Point-of-care testing of parathyroid hormone during the surgical treatment of hyperparathyroidism.(Cover Story)
Magazine article from: Medical Laboratory Observer; 4/1/1999; ; 700+ words
; ...ionized calcium decreases the parathyroid gland secretion of PTH, the principal hormone that increases serum calcium. The parathyroid gland senses the level of...absorption of calcium. Two other hormones - calcitonin and PTH-related...is not produced by the parathyroid gland but is made by ...
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Increased parathyroid hormone-related peptide in patients with hypercalcemia associated with islet cell carcinoma
Magazine article from: Mayo Clinic Proceedings; 12/1/1997; ; 700+ words
; ...high prevalence of increased parathyroid hormone-related peptide (PTHrP...serum calcium and increased parathyroid hormone levels were demonstrated...endocrine neoplasia; PTH = parathyroid hormone; PTHrP = parathyroid...
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Emisphere Receives Patent Covering Oral Parathyroid Hormone Composition With Lilly.
PR Newswire; 6/14/2001; 700+ words
; ...242,495 covering its oral parathyroid hormone (PTH) compositions and dosage...A recombinant form of human parathyroid hormone (1-34), Forteo...technology in combination with parathyroid hormone, will provide Emisphere...
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Full-length human recombinant parathyroid hormone for the treatment of osteoporosis
Magazine article from: Formulary; 5/1/2006; ; 700+ words
; ...length or intact parathyroid hormone [rDNA origin] for...osteoporosis. If approved, parathyroid hormone (1-84...of human parathyroid hormone.9 Daily subcutaneous...intact recombinant parathyroid horm
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Parathyroid hormone gene therapy may stop osteoporosis in postmenopausal women.
Newspaper article from: Gene Therapy Weekly; 1/22/2004; 700+ words
; ...com & NewsRx.net) -- Parathyroid hormone gene therapy may stop osteoporosis...Pth, with full-length human parathyroid hormone (prepro-hPTH) cDNA...electroporational gene transfer of parathyroid hormone might be a promising...
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Parathyroid Hormone Test
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed.
Parathyroid Hormone Test Definition The parathyroid hormone (PTH) test is a blood test performed to determine the serum levels of a hormone secreted by the parathyroid gland in response to low blood calcium levels. PTH works...
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parathyroid hormone
Book article from: A Dictionary of Food and Nutrition
parathyroid hormone The hormone secreted by the parathyroid glands; four glands situated in the neck near to the thyroid gland but not connected with its function. The hormone is secreted in response to a fall in plasma calcium, and acts on the...
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parathyroid glands
Book article from: The Columbia Encyclopedia, Sixth Edition
parathyroid glands , four small endocrine bodies...a deficiency in parathormone, the parathyroid hormone. Parathormone increases the concentration...e.g., caused by tumor of the parathyroid glands, is a serious disorder, for...
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parathyroid
Book article from: The Oxford Pocket Dictionary of Current English
par·a·thy·roid / ˌparəˈ[unvoicedth]īˌroid / • n. Anat. a gland next to the thyroid that secretes a hormone ( parathyroid hormone ) that regulates calcium levels in a person's body.
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Parathyroid Cancer
Encyclopedia entry from: Gale Encyclopedia of Cancer
...parathyroid glands secrete parathyroid hormone, which plays a central role...in that they overproduce parathyroid hormone. Thus, the signs and symptoms...more severe and the levels of parathyroid hormone and calcium are usually higher...
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