²é¿´: 490  |  »Ø¸´: 1

wyying

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

[ÇóÖú] ÈóɫӢÎÄ·­ÒëÖÐÎÄ

Quantifying the vitamin D economy
Abstract
Vitamin D enters the body through multiple routes and in a variety of chemical forms. Utilization varies with input, demand, and genetics. Vitamin D and its metabolites are carried in the blood on a Gc protein that has three principal alleles with differing binding affinities and ethnic prevalence. Three major metabolites are produced, which act via two routes, endocrine and autocrine/paracrine, and in two compartments, extracellular and intracellular. Metabolic consumption is influenced by physiological controls, noxious stimuli, and tissue demand. When administered as a supplement, varying dosing schedules produce major differences in serum metabolite profiles. To understand vitamin D¡¯s role in human physiology, it is necessary both to identify the foregoing entities, mechanisms, and pathways and, specifically, to quantify them. This review was performed to delineate the principal entities and transitions involved in the vitamin D economy, summarize the status of present knowledge of the applicable rates and masses, draw inferences about functions that are implicit in these quantifications, and point out implications for the determination of adequacy.
KEYWORDS:
25-hydroxyvitamin D, 25-dihydroxyvitamin D, inflammation, lactation, obesity, vitamin D

Á¿»¯Î¬ÉúËØD¾­¼Ã
ÕªÒª
άÉúËØDͨ¹ý¶àÖÖ;¾¶ÒÔ²»Í¬»¯Ñ§ÐÎʽ½øÈëÌåÄÚ¡£ÆäÀûÓÃÒòÉãÈë¡¢ÐèÇóºÍÒÅ´«¶øÓÐËù²»Í¬¡£Vitamin D and its metabolites are carried in the blood on a Gc protein that has three principal alleles with differing binding affinities and ethnic prevalence.ѪҺÖÐάÉúËØD¼°Æä´úл²úÎïͨ¹ýGcÇòµ°°×£¨ÒòÇ׺ÍÁ¦ºÍÖÖ×å²îÒìÓÐÈý¸öÖ÷ÒªµÄµÈλ»ùÒò£©½øÐзֲ¼¡£Í¨¹ýÁ½ÖÖ´úл;¾¶£¨ÄÚ·ÖÃÚ;¾¶ºÍ×Ô·ÖÃÚ/ÅÔ·ÖÃÚ;¾¶£©ÔÚÁ½¸öÇøÓò£¨Ï¸°ûÄÚºÍϸ°ûÍâ)Éú³ÉÈýÖÖÖ÷ÒªµÄ´úл²úÎï¡£´úлÐÔÏûºÄÊÜÉúÀí¿ØÖÆ¡¢É˺¦´Ì¼¤ºÍ×éÖ¯ÐèÇóµÈÒòËØµÄÓ°Ïì¡£²¹³ä²»Í¬¼ÁÁ¿µÄάÉúËØDÔÚѪÇå´úлÎïÌØÐÔ·½ÃæÓнϴó²îÒ졣ΪÁËÀí½âάÉúËØDÔÚÈËÌåÉúÀíÖеÄ×÷Óã¬ÓбØÒªÈ·¶¨Ç°ÊöʵÌå¡¢×÷ÓûúÖÆºÍ;¾¶£¬²¢¶ÔÆä½øÐÐÁ¿»¯¡£This review was performed to delineate the principal entities and transitions involved in the vitamin D economy, summarize the status of present knowledge of the applicable rates and masses, draw inferences about functions that are implicit in these quantifications, and point out implications for the determination of adequacy.±¾×ÛÊöÖ÷Òª²ûÊöάÉúËØD¾­¼ÃÖеÄÖ÷ÌåºÍÑݱ䣬¸ÅÀ¨Ä¿Ç°Ïà¹ØÖªÊ¶µÄ¿ÉÊÊÓÃÐԺ͹㷺ÐÔ£¬Í¨¹ý¶ÔÆäÉúÀí×÷Óö¨Á¿·ÖÎö¶ø½øÐÐÍÆÂÛ£¬ºÍ½âÊͶ¨Á¿·ÖÎöËù´ú±íµÄÎÊÌâ¡£
¹Ø¼ü´Ê£º25 -ôÇ»ùάÉúËØD, 25-¶þôÇ»ùάÉúËØD, Ñ×Ö¢, ²¸ÈéÆÚ, ·ÊÅÖ, άÉúËØD
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wyying

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

Çë°ïÖúÈóÉ«£¬Í¬Ê·­ÒëµÄ¡£
2Â¥2015-05-05 15:21:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ wyying µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] Сľ³æÃ»ÂäÁË£¬³ýÁËÆíµ»Ìû×Ó£¬¼¸ºõ¿´²»µ½ÓмÛÖµµÄÌû×Ó +15 botar 2026-07-14 16/800 2026-07-19 18:23 by wowsunflower
[ÂÛÎÄͶ¸å] ÊÛT0PÒ»ÇøSCIÎÄÕ£¬ÎÒ:8O5.51.O.54,¿ÆÄ¿ÆëÈ«,¿É£«¼± +3 ufgqpyvpi6 2026-07-18 6/300 2026-07-19 16:23 by 0u3sh5hhfi
[¿¼²©] ÊÛT0PÒ»ÇøSCIÎÄÕ£¬ÎÒ:8O5.51.O.54,¿ÆÄ¿ÆëÈ«,¿É£«¼± +3 ufgqpyvpi6 2026-07-18 4/200 2026-07-19 16:10 by 0u3sh5hhfi
[¿¼ÑÐ] ÊÛT0PÒ»ÇøSCIÎÄÕ£¬ÎÒ:8O5.51.O.54,¿ÆÄ¿ÆëÈ«,¿É£«¼± +3 ufgqpyvpi6 2026-07-18 6/300 2026-07-19 16:03 by 0u3sh5hhfi
[½Ìʦ֮¼Ò] ÊÛT0PÒ»ÇøSCIÎÄÕ£¬ÎÒ:8O5.51.O.54,¿ÆÄ¿ÆëÈ«,¿É£«¼± +3 ufgqpyvpi6 2026-07-18 6/300 2026-07-19 16:03 by 0u3sh5hhfi
[˶²©¼ÒÔ°] ÊÛT0PÒ»ÇøSCIÎÄÕ£¬ÎÒ:8O5.51.O.54,¿ÆÄ¿ÆëÈ«,¿É£«¼± +3 ufgqpyvpi6 2026-07-18 4/200 2026-07-19 15:54 by 0u3sh5hhfi
[»ù½ðÉêÇë] ¹úÉç¿ÆÍ¨Ñ¶ÆÀÉó +5 DZˮ¹Ú¾ü123 2026-07-18 6/300 2026-07-19 12:28 by lfy8008
[»ù½ðÉêÇë] ÃæÉϵÄË®ºÜÉî +16 ²¼²¼ºÍÒ»¶þ 2026-07-18 21/1050 2026-07-19 10:07 by Vivilian
[»ù½ðÉêÇë] 5¸ö%2F£¬·Ç¹Ì¶¨¶Î22¸ö×Öĸ +8 jaasxulu 2026-07-15 9/450 2026-07-18 17:40 by dxcgbm
[ÂÛÎÄͶ¸å] ͶӢÎÄÆÚ¿¯ÈçºÎ²éÖØ 10+5 ²»ÖªµÀȡʲôÃû× 2026-07-15 6/300 2026-07-17 09:07 by bobvan
[Óлú½»Á÷] ²®°·Éϼ׻ùÇóÖú 100+4 002tmumu 2026-07-14 7/350 2026-07-16 19:47 by 002tmumu
[ÂÛÎÄͶ¸å] ¿ç³ö°æÉçÉÌͶ¸å 20+5 ÄߺÃ520 2026-07-13 5/250 2026-07-16 17:24 by ÎÞÊÓ¾üÍÅ
[»ù½ðÉêÇë] ÉúÉúÃüѧ²¿»áÆÀ +4 wuke100666 2026-07-15 4/200 2026-07-16 00:12 by À²À²Ð¡ÄÝ×Ó
[»ù½ðÉêÇë] »áÆÀ +5 ÎÞÃûÕßµÇɽ 2026-07-15 5/250 2026-07-15 18:15 by ¸Ü¾ÍÊÇÄã¶Ô
[»ù½ðÉêÇë] E¿Ú»áÆÀ +11 ²¼²¼ºÍÒ»¶þ 2026-07-13 13/650 2026-07-15 16:34 by Kittylucky
[»ù½ðÉêÇë] E¿ÚÇàC»áÆÀ½áÊøÁËÂ𣿠40+3 ССÊ鳿c 2026-07-14 9/450 2026-07-15 16:04 by °²¾²µÄÖªÁË
[ÂÛÎÄͶ¸å] ũҵ»úеѧ±¨Í¶¸åÖÜÆÚ +3 G0DLIN 2026-07-14 7/350 2026-07-15 09:26 by xs74101122
[»ù½ðÉêÇë] ¹ú×ÔÈ»ÃæÉÏD¿ÚÆíµ» +4 monkeynana 2026-07-14 4/200 2026-07-15 09:14 by °×Ë®Öó
[»ù½ðÉêÇë] ûÊÕµ½ÏûÏ¢£¬ÔÙ´ÎÅãÅÜ +3 Ìì¿ÕÐdz½fly 2026-07-14 3/150 2026-07-14 19:14 by 6543yes
[»ù½ðÉêÇë] Ã÷ÌìE¿ÚÃæÉÏ»áÆÀ +8 ²¼²¼ºÍÒ»¶þ 2026-07-12 9/450 2026-07-13 22:59 by QTSorange
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û