Triptans are 5-hydroxytryptamine 1 B/1 D receptor agonists used in moderate to severe migraine attacks as first line when non-specific,symptomatic,nonsteroidal anti-inflammatory drugs are not effective.To gain insight...Triptans are 5-hydroxytryptamine 1 B/1 D receptor agonists used in moderate to severe migraine attacks as first line when non-specific,symptomatic,nonsteroidal anti-inflammatory drugs are not effective.To gain insight in the treatment of migraine in the regional context,this retrospective(from January to August of the years 2017 and 2018)study aimed at monitoring the use of triptans approved by the regional health authority in Calabria.The data demonstrate that the overall treatment of migraine with triptans in the different provinces of Calabria falls in the average regional prescription/dispensation.Interestingly,Crotone showed a trend to an increased amount of defined daily dose/1000 inhabitants per day.The present analysis might stand for homogeneity of treatment of migraineurs in Calabria and highlights the need for better understanding the apparent differences in the local pattern of almotriptan use to improve the appropriateness.展开更多
Conversion of methanol(MeOH) to 2,2,3-trimethylbutane(triptane) over zinc iodide(ZnI_2)catalyst was investigated in a closed batch reactor.Optimum operating parameters were searched and catalyst deactivation and regen...Conversion of methanol(MeOH) to 2,2,3-trimethylbutane(triptane) over zinc iodide(ZnI_2)catalyst was investigated in a closed batch reactor.Optimum operating parameters were searched and catalyst deactivation and regeneration behaviors were discussed.The fresh,spent and regenerated catalysts were characterized by XRD,TG and XRF measurements to elucidate the related mechanism.The experimental results showed that the triptane yield reached up to 12.2% under the process conditions,including a reaction temperature of 200℃,an initial pressure of 0.35 MPa,a reaction time of 2 h,and a Me OH to ZnI_2 molar ratio of 2.The catalyst was gradually deactivated after several run cycles.A small amount of iodine was lost and a certain amount of ZnO was formed on the deactivated ZnI_2 catalyst.Deactivation of the catalyst could be attributed to the reduction of ZnI_2 amount,resulted from iodine loss and formation of Zn O.It was firstly pointed out from our work that the deactivated catalyst could be well regenerated by the hydrogen iodide(HI) and the tert-butanol compensation method,wherein the latter was added as an initiator into the reaction system.The activity recovery of the deactivated(spent) catalyst might be related to the reformation of ZnI_2 and acceleration of the initiation step of this reaction.展开更多
基金DS is a post-doc recipient of a research grant salary in the frame of a research project(Tutor:Prof.Giacinto Bagetta)on “Pharmacoepidemiology of drugs used in the treatment of neuropsychiatric symptoms and pain in aged(over 65)people with dementia” funded by Calabria Region “POR Calabria FESR-FSE 2014/2020-Linea B)Azione 10.5.12
文摘Triptans are 5-hydroxytryptamine 1 B/1 D receptor agonists used in moderate to severe migraine attacks as first line when non-specific,symptomatic,nonsteroidal anti-inflammatory drugs are not effective.To gain insight in the treatment of migraine in the regional context,this retrospective(from January to August of the years 2017 and 2018)study aimed at monitoring the use of triptans approved by the regional health authority in Calabria.The data demonstrate that the overall treatment of migraine with triptans in the different provinces of Calabria falls in the average regional prescription/dispensation.Interestingly,Crotone showed a trend to an increased amount of defined daily dose/1000 inhabitants per day.The present analysis might stand for homogeneity of treatment of migraineurs in Calabria and highlights the need for better understanding the apparent differences in the local pattern of almotriptan use to improve the appropriateness.
文摘Conversion of methanol(MeOH) to 2,2,3-trimethylbutane(triptane) over zinc iodide(ZnI_2)catalyst was investigated in a closed batch reactor.Optimum operating parameters were searched and catalyst deactivation and regeneration behaviors were discussed.The fresh,spent and regenerated catalysts were characterized by XRD,TG and XRF measurements to elucidate the related mechanism.The experimental results showed that the triptane yield reached up to 12.2% under the process conditions,including a reaction temperature of 200℃,an initial pressure of 0.35 MPa,a reaction time of 2 h,and a Me OH to ZnI_2 molar ratio of 2.The catalyst was gradually deactivated after several run cycles.A small amount of iodine was lost and a certain amount of ZnO was formed on the deactivated ZnI_2 catalyst.Deactivation of the catalyst could be attributed to the reduction of ZnI_2 amount,resulted from iodine loss and formation of Zn O.It was firstly pointed out from our work that the deactivated catalyst could be well regenerated by the hydrogen iodide(HI) and the tert-butanol compensation method,wherein the latter was added as an initiator into the reaction system.The activity recovery of the deactivated(spent) catalyst might be related to the reformation of ZnI_2 and acceleration of the initiation step of this reaction.
