Private equity in ophthalmology: lessons from other specialties.

PURPOSE OF REVIEW: In the absence of long-term data of the effects of private equity in ophthalmology, this article reviews the role of private equity in other medical specialties as a guide to the future for ophthalmology. RECENT FINDINGS: Across an array of medical specialties, including anesthesiology, dermatology, emergency medicine, ophthalmology/optometry, radiology, and urology, medical practices are being consolidated into a few larger platform groups. Although there has been a short-term financial success for both private equity firms and senior medical practice partners, there exists broad skepticism from peer-reviewed publications and the national media. SUMMARY: Although the impact of private equity on ophthalmology is largely speculative, ophthalmology may follow some of the trends observed in other medical specialties. These trends include increased volume of services, increased profits, improved payer mix, increased payment per patient visit, increased use of midlevel practitioners, decreased physician autonomy, and decreased physician salaries.

Costs of jasmonic acid induced defense in aboveground and belowground parts of corn (Zea mays L.).

Costs of jasmonic acid (JA) induced plant defense have gained increasing attention. In this study, JA was applied continuously to the aboveground (AG) or belowground (BG) parts, or AG plus BG parts of corn (Zea mays L.) to investigate whether JA exposure in one part of the plant would affect defense responses in another part, and whether or not JA induced defense would incur allocation costs. The results indicated that continuous JA application to AG parts systemically affected the quantities of defense chemicals in the roots, and vice versa. Quantities of DIMBOA and total amounts of phenolic compounds in leaves or roots generally increased 2 or 4 wk after the JA treatment to different plant parts. In the first 2 wk after application, the increase of defense chemicals in leaves and roots was accompanied by a significant decrease of root length, root surface area, and root biomass. Four weeks after the JA application, however, no such costs for the increase of defense chemicals in leaves and roots were detected. Instead, shoot biomass and root biomass increased. The results suggest that JA as a defense signal can be transferred from AG parts to BG parts of corn, and vice versa. Costs for induced defense elicited by continuous JA application were found in the early 2 wk, while distinct benefits were observed later, i.e., 4 wk after JA treatment.