Allergic inflammation is closely related to the activation of mast cells (MCs), which is regulated by its intracellular Ca²⁺ level, but the intake and effects of the intracellular Ca²⁺ remain unclear. The Ca²⁺ influx is controlled by members of Ca²⁺ channels, among which calcium voltage-gated channel subunit alpha1 C (Ca_V1.2) is the most robust. This study aimed to reveal the role and underlying mechanism of MC Ca_V1.2 in allergic inflammation. We found that Ca_V1.2 participated in MC activation and allergic inflammation. Nimodipine (Nim), as a strong Ca_V1.2-specific antagonist, ameliorated allergic inflammation in mice. Further, Ca_V1.2 activation in MC was triggered by phosphatizing at its Ser1928 through protein kinase C (PKC), which calcium/calmodulin-dependent protein kinase II (CaMKII) catalyzed. Overexpression or knockdown of MC Ca_V1.2 influenced MC activation. Importantly, Ca_V1.2 expression in MC had detrimental effects, while its deficiency ameliorated allergic pulmonary inflammation. Results provide novel insights into Ca_V1.2 function and a potential drug target for controlling allergic inflammation.

Objective To observe the influence of individualized health eduction on the metabolic index in patients with type 2 diabetes mellitus and thus explore the effective measures of altering life style of patients.Methods The health education plan was made by nurses specialized in diabetes mellitus in 58 patients with type 2 diabetes mellitus in a manner of one nurse to one patient.Metabolic indexes such as BMI,FPG,2hPG and HbAlc were observed after the execution of the plan.Results BMI,FPG,2hPG and HbAlc were all loweled 6 months and 12 months after the execution of the plan compared with those baseline values of these indexes,and more than 90％ patients could persist in the dietary and physical treatment.Conclusions Individualized health education can alter the metabofic indexes of patients with type 2 diabetes mellitus better.The way of one to one can enhance the effectiveness of the education,make the patients culture good life style by themselves and thus delay the occurrence and development of chronic complications associated with diabetes mellitus.