Association between long-term usage of acetylcholinesterase inhibitors and lung cancer in the elderly: a nationwide cohort study.

This retrospective cohort study aimed to evaluate the association between acetylcholinesterase inhibitors (AChEI) usage and the risk of lung cancer. Data from 116,106 new users of AChEI and 348,318, at a ratio of 1:3, matched by age, sex, and index-year, between 2000 and 2015 controls were obtained from the Taiwan Longitudinal Health Insurance Database in this cohort study. The Cox regression model was used to compare the risk of lung cancer.

[Seed morphology and effects of sheep rumen digestion on seed germination of 28 Gramineae plants.].

An experiment was undertaken to compare the morphological characteristics of seeds of 28 Gramineae plants which widely distributed in north Xinjiang and to study their digestion in the rumen of sheep. After determining their morphological characteristics including seed length, width, height, seed shape index, 100-seed mass, and seed germination percentage, seeds were put into nylon bags and then placed in the rumen of sheep through a fistula. The bags were removed at different times to determine the morphological characteristics and seed germination rates.