Objective To devolope a method for extracting DNA from dried blood spots (DBS)and optimizing the operating procedure,which could be applied to clinical gene diagnosis of thalassemia.And the cross contamination of DBS punching and the storage stability of DBS were studied.Methods A total of 1 50 blood specimens were collected,and DBS were prepared.Circles (3 mm in diameter)were punched in the DBS,and eluted with lysis buffer.The eluting method and operating procedure were opti-mized.Genomic DNA extracted from the elution solution by magnetic beads,and were performed thalassemia gene test.Finally jud-ging whether the results of DBS and whole blood were consistent.Two methods of thalassemia gene test were used in DBS and the compatibility of DBS processing method was verified.Judging whether there was cross contamination of DBS punching by the thalassemia gene test results of blank hole which were punched in the blank filter paper between thalassemia positive DBS.The DBS storage stability in thalassemia gene test was verified by detecting the DBS which were dry stored at room temperature for 6 and 9 months.Results 5 circles (3 mm in diameter)DBS were vibrating eluted at 55 ℃ for 1 hour,the DNA concentration extracted from the elution solution was 10-20 ng/μL,which was dissolved in 50 μL solution,and the DNA quality was good.The thalassemia gene test results of DBS and whole blood were the same,and the DBS results of two thalassemia gene test methods were the same too. The cross contamination of DBS punching was not detected in thalassemia gene test.The DBS which were dry stored at room tem-perature for 6 and 9 months could be stably performed thalassemia gene test.Conclusion DBS could be used to perform thalassemia gene test,which is accurate,convenient and stable.It is an ideal way for specimen referral of thalassemia gene test.

Objective To explore the clinical application of combined cooling of Chinese and Western medicine on the cooling effect of patients with heatstroke. Methods A total of 80 patients with severe heat stroke admitted to the emergency department of our hospital from January 2016 to December 2017 were selected and divided into treatment group and control group according to the random number table method. 40 patients in the control group were given physical cooling. For conventional treatment, patients in the treatment group were given TCM treatment interventions on the basis of this, and clinical efficacy, changes in body temperature, and adverse screening events were compared between the two groups. Results The clinical effective rate (100.00%, ) in the treatment group was significantly higher than that in the control group (85.00%, Z=6.125,P<0.05). The duration of high fever, duration of fever, and recovery time of symptoms and signs were (0.57±0.46), (3.12±0.75), (7.25±3.18) h in the treatment group, (1.43±0.89), (5.37±0.63), (12.47± 4.53) h in the control group, there were significant differences between the two groups (t=5.429, 14.528, 5.965, P<0.05). After treatment, the levels of cTnl and CK-MB in the peripheral blood of the two groups decreased significantly (P<0.05). The levels of cTnl and CK-MB in peripheral blood of patients in the treatment group were (3.13±0.15) μg/L, (412.02±156.33) U/L, (3.54± 0.26) μg/L, (748.32±119.20) U/L in the control group, there were significant differences between the two groups (t=8.639, 10.819,P<0.05).There was no significant difference in the incidence of adverse reactions between the two groups (χ2=2.222, P=0.263). Conclusion The combination of Chinese and Western medicine physical cooling has a significant cooling effect on patients with heat stroke, and does not increase the risk of adverse reactions, it is worth clinical Promotion and application.