Objective:To determine the activity and phenotype of decidual natural killer (NK) cells in patients with unexplained habitual abortions (UHA).Methods:A total of 32 patients with UHA were studied, and 20 cases of norma...Objective:To determine the activity and phenotype of decidual natural killer (NK) cells in patients with unexplained habitual abortions (UHA).Methods:A total of 32 patients with UHA were studied, and 20 cases of normal pregnant women were selected as control group. The levels of CD56 +CD3 - NK cells and their CD56 +CD16 -, CD56 +CD16 + subsets in decidua were detected using two color flow cytometric analysis.The NK cells activity was measured by a chromium 51( 51 Cr) release cytotoxicity assay,with K562 human myeloid leukaemia cells as targets.Results:Compared with control group, the proportion of CD56 +CD3 - NK cells in decidual mononuclear cells(DMC) of UHA patients had no difference, but the CD56 +CD16 - NK cell subset decreased and the CD56 +CD16 + subset increased significantly (P<0.05). The decidual NK cells activities of UHA patients were higher than those of normal controls (P<0.05).Conclusions:NK cell is predominant lymphocyte in normal decidua and plays an important role in maintaining successful pregnancy. Abnormally raised activity and disbalanced CD56 +CD16 +, CD56 +CD16 - subsets of decidual NK cell are associated with UHA and may play a role in reproductive failure.展开更多
Objective: In this study the purpose is to evaluate the effectiveness of daily bemiparin sodium injection in preventing early pregnancy loss and in achieving live births in pregnant patients, not ahead of 6th week, wh...Objective: In this study the purpose is to evaluate the effectiveness of daily bemiparin sodium injection in preventing early pregnancy loss and in achieving live births in pregnant patients, not ahead of 6th week, who are diagnosed with habitual abortion in a case-controlled randomized prospective study. Study Design: In this prospective study, 120 pregnant patients not ahead of 6th week and aged between 21 - 36 and diagnosed with habitual abortion between April 2011 and April 2012 in our clinic were included. Habitual abortion diagnosis criteria was based on patient history of three or more miscarriages before the 20th week and a genetically documented homozygote or heterozygote mutation of the methylenetetrahydrofolate Reductase gene. Results: The rate and the number of live births in the study group was 60 (93.75%) and statistically higher than the control group 32 (57.14%). The difference was found to be statistically significant (p = 0.001). The rate and the number of abortions in the control group was 24 (42.85%) and statistically higher than the study group 4 (6.25%). The difference was found to be statistically significant (p = 0.001). Conclusion: In order to maintain a healthy pregnancy an effective uteroplacental circulation is a must and any defects in haemostasis mechanisms may have an adverse influence. A few non-randomized studies comparing pregnancy results of low dose salycilic acid and low molecular weight heparin usage in patients also show that prophylaxis might be beneficial.展开更多
Objective:To study the metabolism abnormality of homocysteine(Hcy) in unexplained repeated spontaneous abortion(URSA).Methods:The level of Hcy in sera was measured with hyperpressure liquid chromatography(HPLC);Folic ...Objective:To study the metabolism abnormality of homocysteine(Hcy) in unexplained repeated spontaneous abortion(URSA).Methods:The level of Hcy in sera was measured with hyperpressure liquid chromatography(HPLC);Folic acid and vitamin B 12 were detected by radioimmune assay;anticardiolipin antibody (ACA) was detected by ELISA.Results:(1)The level of serum Hcy in URSA group was significantly higher than that in control group,showing a statistical significant difference(P<0.01).The level of Hcy was correlated with ages,but not correlated with areas,numbers of miscarriage,gestation age,primary or secondary abortions.(2)The levels of folic acid and vitamin B 12 in URSA group were significantly lower than those in control group.The levels of serum folic acid and vitamin B 12 were not correlated with age,area,numbers of miscarriage and abortion periods.(3)ACA positive rate in URSA was significantly higher than that in control group.The level of Hcy in ACA(+) group was significantly higher than that in ACA(-) group among URSA patients.Conclusions:Hyperhomocysteinemia,low folic acid state,and ACA were all the independent risk factors for URSA.Lacking of folic acid and vitamin B 12 is one of the important causes of hyperhomocysteinemia.ACA and hyperhomocysteinemia may have synergistic action in the occurrence of URSA.展开更多
Circulating antisperm antibodies (AsAb) and immunosuppressive material in seminal plasma (SPIM)were determined by solid-phase enzyme staining assay and anticomplement test respectively in 686 patients with abortion (i...Circulating antisperm antibodies (AsAb) and immunosuppressive material in seminal plasma (SPIM)were determined by solid-phase enzyme staining assay and anticomplement test respectively in 686 patients with abortion (including 285 couples) . 241 fertile couple served as control. It’s found that the positive rate of AsAb in infertile patients was significantly higher than that in fertile control,being 36.6% vs 3.3% (P【0.001). AsAb was even more offen detected in recurrent aborting patients. Male patients whose spouses aborted 2-6 fetuses had significantly less SPIM than control, sperm count and sperm motility were also significantly decreased. But the incidence of pyospermia was significantly greater than that in control. It is concluded that AsAb and SPIM have played an important role in the development of recurrent abortions.展开更多
文摘Objective:To determine the activity and phenotype of decidual natural killer (NK) cells in patients with unexplained habitual abortions (UHA).Methods:A total of 32 patients with UHA were studied, and 20 cases of normal pregnant women were selected as control group. The levels of CD56 +CD3 - NK cells and their CD56 +CD16 -, CD56 +CD16 + subsets in decidua were detected using two color flow cytometric analysis.The NK cells activity was measured by a chromium 51( 51 Cr) release cytotoxicity assay,with K562 human myeloid leukaemia cells as targets.Results:Compared with control group, the proportion of CD56 +CD3 - NK cells in decidual mononuclear cells(DMC) of UHA patients had no difference, but the CD56 +CD16 - NK cell subset decreased and the CD56 +CD16 + subset increased significantly (P<0.05). The decidual NK cells activities of UHA patients were higher than those of normal controls (P<0.05).Conclusions:NK cell is predominant lymphocyte in normal decidua and plays an important role in maintaining successful pregnancy. Abnormally raised activity and disbalanced CD56 +CD16 +, CD56 +CD16 - subsets of decidual NK cell are associated with UHA and may play a role in reproductive failure.
文摘Objective: In this study the purpose is to evaluate the effectiveness of daily bemiparin sodium injection in preventing early pregnancy loss and in achieving live births in pregnant patients, not ahead of 6th week, who are diagnosed with habitual abortion in a case-controlled randomized prospective study. Study Design: In this prospective study, 120 pregnant patients not ahead of 6th week and aged between 21 - 36 and diagnosed with habitual abortion between April 2011 and April 2012 in our clinic were included. Habitual abortion diagnosis criteria was based on patient history of three or more miscarriages before the 20th week and a genetically documented homozygote or heterozygote mutation of the methylenetetrahydrofolate Reductase gene. Results: The rate and the number of live births in the study group was 60 (93.75%) and statistically higher than the control group 32 (57.14%). The difference was found to be statistically significant (p = 0.001). The rate and the number of abortions in the control group was 24 (42.85%) and statistically higher than the study group 4 (6.25%). The difference was found to be statistically significant (p = 0.001). Conclusion: In order to maintain a healthy pregnancy an effective uteroplacental circulation is a must and any defects in haemostasis mechanisms may have an adverse influence. A few non-randomized studies comparing pregnancy results of low dose salycilic acid and low molecular weight heparin usage in patients also show that prophylaxis might be beneficial.
文摘Objective:To study the metabolism abnormality of homocysteine(Hcy) in unexplained repeated spontaneous abortion(URSA).Methods:The level of Hcy in sera was measured with hyperpressure liquid chromatography(HPLC);Folic acid and vitamin B 12 were detected by radioimmune assay;anticardiolipin antibody (ACA) was detected by ELISA.Results:(1)The level of serum Hcy in URSA group was significantly higher than that in control group,showing a statistical significant difference(P<0.01).The level of Hcy was correlated with ages,but not correlated with areas,numbers of miscarriage,gestation age,primary or secondary abortions.(2)The levels of folic acid and vitamin B 12 in URSA group were significantly lower than those in control group.The levels of serum folic acid and vitamin B 12 were not correlated with age,area,numbers of miscarriage and abortion periods.(3)ACA positive rate in URSA was significantly higher than that in control group.The level of Hcy in ACA(+) group was significantly higher than that in ACA(-) group among URSA patients.Conclusions:Hyperhomocysteinemia,low folic acid state,and ACA were all the independent risk factors for URSA.Lacking of folic acid and vitamin B 12 is one of the important causes of hyperhomocysteinemia.ACA and hyperhomocysteinemia may have synergistic action in the occurrence of URSA.
文摘Circulating antisperm antibodies (AsAb) and immunosuppressive material in seminal plasma (SPIM)were determined by solid-phase enzyme staining assay and anticomplement test respectively in 686 patients with abortion (including 285 couples) . 241 fertile couple served as control. It’s found that the positive rate of AsAb in infertile patients was significantly higher than that in fertile control,being 36.6% vs 3.3% (P【0.001). AsAb was even more offen detected in recurrent aborting patients. Male patients whose spouses aborted 2-6 fetuses had significantly less SPIM than control, sperm count and sperm motility were also significantly decreased. But the incidence of pyospermia was significantly greater than that in control. It is concluded that AsAb and SPIM have played an important role in the development of recurrent abortions.
