In fruit production,the application of the plant growth regulator 1-(2-chloro-4-pyridyl)-3-phenylurea(CPPU)dulls the fruit aroma.Gas chromatography-mass spectrometry and transcriptome analyses were performed on CPPU-t...In fruit production,the application of the plant growth regulator 1-(2-chloro-4-pyridyl)-3-phenylurea(CPPU)dulls the fruit aroma.Gas chromatography-mass spectrometry and transcriptome analyses were performed on CPPU-treated and pollinated fruits to determine how CPPU affects the production of aroma in melon fruit.The results showed that the contents of two important esters(benzyl acetate and phenethyl acetate)in the CPPU-treated fruits were significantly lower than those in the pollinated fruits.Transcriptome sequencing data revealed that most differentially expressed genes were involved in“phenylalanine metabolism”pathway,and their expression was significantly decreased in the CPPU-treated fruits.Further analysis showed that the phenylalanine content in the CPPU-treated fruits was significantly higher than that in the pollinated fruits.In summary,CPPU application interferes with phenylalanine metabolism in melon fruits and affects the production of aromatic esters.展开更多
This study aims to validate our hypothesis that acid-sensing ion channels （ASICs） may contribute to the symptom of pain in patients with chronic prostatitis （CP）. We first established a CP rat model, then isolated...This study aims to validate our hypothesis that acid-sensing ion channels （ASICs） may contribute to the symptom of pain in patients with chronic prostatitis （CP）. We first established a CP rat model, then isolated the L5-S2 spinal dorsal horn neurons for further studies. ASICla was knocked down and its effects on the expression of neurogenic inflammation-related factors in the dorsal horn neurons of rat spinal cord were evaluated. The effect of ASICla on the Ca2＋ ion concentration in the dorsal horn neurons of rat spinal cord was measured by the intracellular calcium （[Ca~＊]i） intensity. The effect of ASICla on the p38/mitogen-activated protein kinase （MAPK） signaling pathway was also determined. ASICla was significantly upregulated in the CP rat model as compared with control rats. Acid-induced ASICla expression increased [Ca2＋]i intensity in the dorsal horn neurons of rat spinal cord. ASICla also increased the levels of neurogenic inflammation-related factors and p-p38 expression in the acid-treated dorsal horn neurons. Notably, ASICla knockdown significantly decreased the expression of pro-inflammatory cytokines. Furthermore, the levels of p-p38 and pro-inflammatory cytokines in acid-treated dorsal horn neurons were significantly decreased in the presence of PcTx-1, BAPTA-AM, or SB203580. Our results showed that ASIC1a may contribute to the symptom of pain in patients with CP, at least partially, by regulating the p38/MAPK signaling pathway.展开更多
基金the China Agriculture Research System of MOF and MARA(CARS-25)the Special Fund for Agro-scientific Research in the Public Interest,China(201203080)+1 种基金the Fundamental Research Funds for the Central Universities,China(2662018PY039)the Hubei Provincial Natural Science Foundation of China(2019CFA017).
文摘In fruit production,the application of the plant growth regulator 1-(2-chloro-4-pyridyl)-3-phenylurea(CPPU)dulls the fruit aroma.Gas chromatography-mass spectrometry and transcriptome analyses were performed on CPPU-treated and pollinated fruits to determine how CPPU affects the production of aroma in melon fruit.The results showed that the contents of two important esters(benzyl acetate and phenethyl acetate)in the CPPU-treated fruits were significantly lower than those in the pollinated fruits.Transcriptome sequencing data revealed that most differentially expressed genes were involved in“phenylalanine metabolism”pathway,and their expression was significantly decreased in the CPPU-treated fruits.Further analysis showed that the phenylalanine content in the CPPU-treated fruits was significantly higher than that in the pollinated fruits.In summary,CPPU application interferes with phenylalanine metabolism in melon fruits and affects the production of aromatic esters.
基金This research was supported in part by grants from the National Natural Science Foundation of China （No. 81400757） National College Students Innovation and Entrepreneurship Training Program （No. 201510366009） and Anhui Provincial Natural Science Foundation （1508085QH 171 ）.
文摘This study aims to validate our hypothesis that acid-sensing ion channels （ASICs） may contribute to the symptom of pain in patients with chronic prostatitis （CP）. We first established a CP rat model, then isolated the L5-S2 spinal dorsal horn neurons for further studies. ASICla was knocked down and its effects on the expression of neurogenic inflammation-related factors in the dorsal horn neurons of rat spinal cord were evaluated. The effect of ASICla on the Ca2＋ ion concentration in the dorsal horn neurons of rat spinal cord was measured by the intracellular calcium （[Ca~＊]i） intensity. The effect of ASICla on the p38/mitogen-activated protein kinase （MAPK） signaling pathway was also determined. ASICla was significantly upregulated in the CP rat model as compared with control rats. Acid-induced ASICla expression increased [Ca2＋]i intensity in the dorsal horn neurons of rat spinal cord. ASICla also increased the levels of neurogenic inflammation-related factors and p-p38 expression in the acid-treated dorsal horn neurons. Notably, ASICla knockdown significantly decreased the expression of pro-inflammatory cytokines. Furthermore, the levels of p-p38 and pro-inflammatory cytokines in acid-treated dorsal horn neurons were significantly decreased in the presence of PcTx-1, BAPTA-AM, or SB203580. Our results showed that ASIC1a may contribute to the symptom of pain in patients with CP, at least partially, by regulating the p38/MAPK signaling pathway.
