PDF(Pubmed)
Abstract：
We analyzed pedicle bone from roe bucks that had died around antler casting or shortly before or during the rutting period. Pedicles obtained around antler casting were highly porous and showed signs of intense osteoclastic activity that had caused the formation of an abscission line. Following the detachment of the antler plus a portion of pedicle bone, osteoclastic activity in the pedicles continued for some time, and new bone was deposited onto the separation plane of the pedicle stump, leading to partial pedicle restoration. Pedicles obtained around the rutting period were compact structures. The newly formed, often very large secondary osteons, which had filled the resorption cavities, exhibited a lower mineral density than the persisting older bone. The middle zones of the lamellar infilling frequently showed hypomineralized lamellae and enlarged osteocyte lacunae. This indicates a deficiency in mineral elements during the formation of these zones that occurred along with peak antler mineralization. We suggest that growing antlers and compacting pedicles compete for mineral elements, with the rapidly growing antlers being the more effective sinks. The competition between the two simultaneously mineralizing structures is probably more severe in Capreolus capreolus than in other cervids. This is because roe bucks regrow their antlers during late autumn and winter, a period of limited food and associated mineral supply. The pedicle is a heavily remodeled bone structure with distinct seasonal variation in porosity. Pedicle remodeling differs in several aspects from the normal bone remodeling process in the mammalian skeleton.
摘要：
我们分析了在鹿角铸造附近或在车辙前不久或在车辙期间死亡的鱼卵中的椎弓根。在鹿角铸型周围获得的椎弓根高度多孔，并显示出强烈的破骨细胞活动的迹象，这导致了脱落线的形成。鹿角和一部分椎弓根骨脱离后，在椎弓根的破骨细胞活动持续了一段时间，新骨沉积在椎弓根残端的分离平面上，导致部分椎弓根恢复。在车辙期间获得的椎弓根是紧凑的结构。新成立的,通常是非常大的次生骨，填满了吸收腔，表现出较低的矿物质密度比持久的老骨。层状填充物的中间区域经常显示出低矿化的薄片和增大的骨细胞腔隙。这表明在这些带的形成过程中矿物元素的缺乏以及鹿角矿化的峰值。我们建议生长的鹿角和紧实的椎弓根竞争矿物元素，迅速增长的鹿角是更有效的水槽。两种同时矿化结构之间的竞争可能比其他子宫颈更为严重。这是因为雄鹿在深秋和冬季重新长出了鹿角，食物和相关矿物质供应有限的时期。椎弓根是严重重塑的骨结构，孔隙率具有明显的季节性变化。椎弓根重塑在几个方面与哺乳动物骨骼中的正常骨重塑过程不同。
