After an early, well-known COX-2 boost, the team found a second, even more prominent peak in COX-2 levels as inflammation waned.
Models also demonstrate that bone repair is evident when inflammation wanes, but cartilage repair is more difficult to achieve and is often defective.
Concomitantly, the influence of progesterone (P4) in maintaining pregnancy and suppressing inflammation wanes and estradiol-17β (E2) levels rise [ 18, 19], thereby permitting and accelerating the changes leading to parturition.
Despite the strong negative correlation of CRP with Fe erythrocyte incorporation above, CRP did not significantly predict Fe erythrocyte incorporation, probably because by day 15 inflammation had waned (see Table 1).
Pulmonary elastance was elevated with time following exposure and demonstrated PEEP refractory derecruitment at 48 h, despite waning inflammation.
Unlike PIC, patients with MFC have chorioretinal scars mostly in the mid-peripheral retina and a course characterized by waxing and waning inflammation that results in poor visual prognosis [10].
Interestingly, the incidence of prostate cancer increases with age, as does inflammation, while the effects of androgens on the prostate wane with age.
In contrast, the SHL study investigators did not show an increase in immune activity in postmenopausal women and concluded that the upregulation of inflammation and immune response related genes persists during postpartum involution but wanes after menopause [ 12].
Since regulatory responses are initiated in parallel with inflammatory responses, MLN Tregs are likely to increase in response to the DSS challenge, but their numbers may wane as they are recruited towards the principal site of inflammation; the colonic mucosa.
Despite the evidence that this overt process wanes when repeated over time, it appears that the injury and inflammation cascade promotes cellular hypertrophy and the deposition of interstitial matrix materials and generalized remodeling of the fine structures of the deep lung (Chang et al. 1992; U.S. EPA 1993).
