ITS sequences variation and phylogenetic analysis on 31 geographical populations of Notopterygium incisum / 中国中药杂志

In this study, 31 Notopterygium incisum populations were analyzed using ITS sequences to investigate the genetic structure. The results showed that: the ITS region ranged in size from 634 to 635 bp and base composition was with high G + C content of 57.8%. Thirty-one polymorphic sites were detected from 402 sequences of 31 populations of N. incisum, and the proportion of polymorphic sites was 4.88%, in which parsimony informative sites were up to 12. And 31 haplotypes were identified based on these polymorphic sites. Molecular variance analysis (AMOVA) indicated that high genetic differentiation (57%) existed among population, and gene flow was low (N(m) = 0.38) among populations. Phylogenetic relationships of 31 haplotypes were analyzed using NJ method with N. forbesiias an out-group. Phylogenetic analysis showed that 31 haplotypes from different populations mixed together and did not form distinct geographically separated clades.

Relationship between the expression of autoantibodies against platelet membrane glycoprotein and therapeutic effect in primary immune thrombocytopenia / 中华血液学杂志

<p><b>OBJECTIVE</b>To study the expression of specific anti- platelet glycoprotein autoantibodies GP II b/III a, GP I b/IX and GP I a/II a in primary immune thrombocytopenia (ITP), and to evaluate the relationship between the therapeutic effect and the expression of specific anti- platelet glycoprotein antibodies GPIIb/IIIa, GPIb/IX and GPIa/IIa.</p><p><b>METHODS</b>Anti-GPIIb/IIIa, GPIb/ IX and GP I a/II a antibodies were assayed by ELISA for patients with ITP. Total 442 patients in our hospital, who were retrospectively investigated from December 2010 to November 2012, were divided into newly diagnosed ITP, persistent and chronic ITP. The expression of specific anti- platelet glycoprotein antibody in each group was measured separately. The newly diagnosed ITP patients were treated with intravenous IgG (IVIG) and corticosteroids. The relationship between the expression of specific anti- platelet glycoprotein antibodies GPIIb/IIIa, GPIb/IX and GPIa/IIa and the complete response (CR) was studied.</p><p><b>RESULTS</b>Positive rates of anti- platelet glycoprotein antibodies were 59.09%, 26.97% and 37.35% respectively in newly diagnosed ITP, persistent and chronic ITP, the difference was statistical significant (P<0.05). In newly diagnosed ITP, positive rate of antibody against GPIIb/IIIa was 38.64%, double positive rate of antibodies against both GP II b/III a and GP I a/II a was 15.91%, there was statistical significance (P<0.05) compared with that of persistent and chronic ITP. The complete response (CR) rate in newly diagnosed ITP patients with positive antibody against GP II b/III a was 80.39% after treatment with IVIG and corticosteroids. There was statistical significance compared with that in patients having no antibodies (P<0.05).</p><p><b>CONCLUSION</b>The expression of antibodies against GP II b/III a and double positive for both GP II b/III a and GP I a/II a autoantibodies increased in newly diagnosed ITP patients. Patients with anti-GP II b/III a autoantibody had good response to medication with IVIG and corticosteroids.</p>

Application of micro-column gel cards assay for direct Coombs test in diagnosis of autoimmune hemolytic anemia / 中华血液学杂志

<p><b>OBJECTIVE</b>To evaluate the clinic value of micro-column gel cards direct Coombs test (gel test) in diagnosis of autoimmune hemolytic anemia (AIHA).</p><p><b>METHODS</b>Specimens of 128 suspected AIHA patients were performed direct Coombs test by conventional tube or gel cards. The results of the two tests were compared. The hemoglobin concentrations, proportions of reticulocyte, serum levels of bilirubin and free hemoglobin were detected simultaneously and compared in subgroups.</p><p><b>RESULTS</b>The positive detection rate of direct Coombs test performed by gel test or tube were 88.4% and 37.7%, respectively.</p><p><b>CONCLUSION</b>Compared with the tube tests, gel test assay is more sensitive, easy to perform and standardized in diagnosis of AIHA, and the gel card can be stored for a long time. The gel test is valuable for the diagnosis of AIHA.</p>

A novel diagnostic measure of platelet-specific antibody in immune thrombocytopenia / 中华血液学杂志

<p><b>OBJECTIVE</b>To detect the platelet glycoprotein-specific antibodies in serum of thrombocytopenia patients and evaluate its diagnostic value for immune thrombocytopenia.</p><p><b>METHOD</b>Anti-GPIIb/IIIa, GPIb/IX and GPIa/IIa antibodies were assayed by ELISA kit (PAKUTO) in patients with thrombocytopenia.</p><p><b>RESULTS</b>The sensitivity and specificity of PAKAUTO in immune thrombocytopenia were 44.0% and 95.7%, respectively. The values of positive and negative predictions were 98.0% and 26.2%, respectively. Among those PAKAUTO positive patients, positive rates of GPIIb/IIIa, GPIa/IIa and GPIb/IX were 87%, 35% and 10%, respectively. The positive rate of patients not received immune suppressive agents (58.5%) was significantly higher than those received immune suppressive agents (26.9%) (P < 0.01). The positive rate of patients with platelet count ≤ 20 × 10(9)/L (51.6%) was significantly higher than those with platelet count > 20 × 10(9)/L (27.8%) (P < 0.01). The positive rate of patients with secondary immune thrombocytopenia (66.7%) was significantly higher than those with primary immune thrombocytopenia (41.7%) (P < 0.05).</p><p><b>CONCLUSION</b>The highly specific method (PAKAUTO) could effectively differentiate immune or non-immune thrombocytopenia and be applied to diagnosis of immune thrombocytopenia.</p>