Objective To investigate the effect of fetal hemoglobin( HbF) in improving anemia of women who were β‐thalasse‐mia carriers at childbearing age .Methods 289 cases of women at childbearing age diagnosed as β‐thalassemia carriers in Shenzhen City were enrolled in this study .The high performance liquid chromatography (HPLC) was uesed for quantitative analysis of HbF , and the red blood cell parameters were detected by using the LH750 Automatic blood cell analyzer .The differences of red blood cell parameters between the HbF normal group and the HbF increased group were compared ,and the relationship between the high HbF expression rates and gene mutations were also analyzed .Results Comapred with the HbF normal group ,the hemoglobin (HGB) levels ,mean corpuscular volume (MCV) and the mean corpuscular hemoglobin (MCH) increased significantly ,while the red blood cell (RBC) count reduced ,there were significant differences between the two groups (P<0 .05) .No significant differ‐ences of the mean corpuscular hemoglobin concentration (MCHC) and RDW coefficient of variation (RDW‐CV) between the two groups were found(P>0 .05) .There were no significant differnces of rates of HBF high expression between different types of β‐globin gene mutations and the overall rate of HBF high expression (P>0 .05) .Conclusion Compared with the HbF normal group , anemia may improve more significantly in cases of women diagnosed as β‐thalassemia carriers at childbearing age in the HbF in‐creased group ,and there may be no relationship between gene mutations and high expression of HbF .

AIM: To explore the pathogenesis of aplastic anemia (AA), we identified the crucial isoform of cyclin D that determine the proliferation of the cord blood CD34~+ cells and observed effects of AA serum on the expression of crucial cyclin D isoform in umbilical cord blood CD34~+ cells. METHODS: The CD34~+ cells were isolated with MIDI-MACS system. The isoforms of cyclin D were detected by RT-PCR and Western blotting. Methylcellulose culture system was used to measure the formation of CFU-GM. The expression level of crucial cyclin D isoform was assayed by RT-PCR and Western blotting after the CD34~+ cells were incubated in AA serum. RESULTS: The crucial cyclin D isoform in CD34~+ cells was cyclin D3. The AA serum inhibited the formation of CFU-GM and down-regulated expression level of the cyclin D3 from the mRNA to protein level, respectively. CONCLUSION: The AA serum inhibits the proliferation of CD34~+ cells and down-regulates level of cyclin D3, this may be one of hematopoiesis inhibition mechanisms in AA.

The pathogenesis of aplastic anemia (AA) was explored and the effects of AA serum on the expression of crucial cyclin D isoform (cyclin D3) in umbilical cord blood hematopoietic stem/progenitor cells were observed. The CD34+ cells were isolated from the cord blood with MIDI-MACS Semi-solid methylcellulose culture technique was used to measure the formation of CFU-GM; The expression level of cyclin D3 was assayed by semi-quantitative RT-PCR and Western-blot after the hematopoietic stem/progenitor cells were incubated in AA serum. The results showed that the AA serum could inhibit the formation of CFU-GM and down regulate the expression level of the cyclin D3 at the mRNA and protein level respectively. In conclusion, the AA serum could inhibit the proliferation of hematopoietic stem cells and down regulate level of cyclin D3, which might be one mechanism of hematopoiesis inhibition in AA.
Anemia, Aplastic/*blood ; Antigens, CD34/*metabolism ; Cells, Cultured ; Colony-Forming Units Assay ; Cyclins/*biosynthesis ; Cyclins/genetics ; Fetal Blood/cytology ; Hematopoietic Stem Cells/*cytology ; Protein Isoforms/biosynthesis ; Protein Isoforms/genetics ; RNA, Messenger/biosynthesis ; RNA, Messenger/genetics ; Serum

Objective To establish a molecular method for the identification of different serotypes of group B streptococcus(GBS)based on TaqMan fluorescence probe technology,and to lay the foundation for the sub-sequent study of multiple fluorescent probe technology to detect different serotypes of GBS.Methods Primers and probes were designed according to the different serotypes of capsular polysaccharide(CPS).CPS se-quences were amplified by real-time fluorescence quantitative polymerase chain reaction.GBS classification methods of different serotypes were established.The results were compared with latex agglutination test and the method was evaluated from the aspects of sensitivity,specificity and detection of clinical isolates.Results The logarithmic concentration of DNA in the same serotype GBS was linearly correlated with the value of Ct. The detection limit of this method is 1 pg/μL,a probe could only detect the corresponding serotype GBS.The results of TaqMan fluorescence probe test of 10 strains were consistent with the results of latex agglutination test.Conclusion TaqMan fluorescence probe technique is a simple,rapid,highly sensitive and specific method for the detection of different GBS serotypes,and it is better than latex agglutination test for the classification of clinical isolates.

The pathogenesis of aplastic anemia (AA) was explored and the effects of AA serum on the expression of crucial cyclin D isoform (cyclin D3) in umbilical cord blood hematopoietic stem/progenitor cells were observed. The CD34+ cells were isolated from the cord blood with MIDI-MACS Semi-solid methylcellulose culture technique was used to measure the formation of CFU-GM; The expression level of cyclin D3 was assayed by semi-quantitative RT-PCR and Western-blot after the hematopoietic stem/progenitor cells were incubated in AA serum. The results showed that the AA serum could inhibit the formation of CFU-GM and down regulate the expression level of the cyclin D3 at the mRNA and protein level respectively. In conclusion, the AA serum could inhibit the proliferation of hematopoietic stem cells and down regulate level of cyclin D3, which might be one mechanism of hematopoiesis inhibition in AA.
Anemia, Aplastic ; blood ; Antigens, CD34 ; metabolism ; Cells, Cultured ; Colony-Forming Units Assay ; Cyclin D3 ; Cyclins ; biosynthesis ; genetics ; Female ; Fetal Blood ; cytology ; Hematopoietic Stem Cells ; cytology ; Humans ; Male ; Protein Isoforms ; biosynthesis ; genetics ; RNA, Messenger ; biosynthesis ; genetics ; Serum

Objective To explore the relationship between geriatric nutritional risk index(GNRI)and adverse outcomes in elderly patients undergoing maintenance hemodialysis(MHD).Methods A prospective cohort trial was conducted on 337 MHD patients aged ≥60 years in hemodialysis centers of 11 hospitals in Beijing from April to June 2017.Their baseline data were collected,and they were divided into non-malnutrition(GNRI≥98,226 cases),mild malnutrition(92≤GNRI＜98,81 cases),and major malnutrition groups(GNRI＜92,30 cases).All of them were followed up until June 2018.The endpoint events were all-cause mortality and cardiovascular disease(CVD)mortality.Kaplan-Meier survival analysis was used to compare the cumulative survival rate among the 3 groups.Multivariate Cox regression model was employed to analyze the relationship of GNRI with all-cause and CVD mortality.Results The mild and major malnutrition groups had significantly lower BMI,serum albumin level and GNRI(P＜0.01).During the median follow-up of 52(4.4-52.0)weeks,56(16.6％)patients died of all-cause death and 25(44.6％)of CVD death.Kaplan-Meier survival curve showed significant differences in all-cause mortality(x2=30.484,P＜0.01)and CVD mortality(x2=22.398,P＜0.01)in the 3 groups.Multivariate Cox regression analysis indicated that,as a continuous variable,elevated GNRI was a protective factor for all-cause mortality(HR=0.910,95％CI:0.870-0.952,P=0.000)and CVD mortality(HR=0.895,95％CI:0.852-0.940,P=0.000),and as a categorical variable,mild and major malnutri-tion were independently correlated with all-cause and CVD mortality(P＜0.05).Conclusion GNRI is an independent risk factor for all-cause and CVD mortality in elderly MHD patients.Mo-nitoring the nutritional status using GNRI can predict the risk of adverse prognosis.

Objective To preliminarily verify the effectiveness and safety of bloodletting combined with drug bamboo cups in intervention of degenerative lumbar spinal stenosis,and to explore the prognostic factors that affect the efficacy of TCM regimens in the treatment of DLSS.Methods 64 consecutive patients with degenerative lumbar spinal stenosis were enrolled.Bloodletting combined with drug bamboo cup intervention was used.Acupoints were selected and treated with the same length of the governor channel of the lumbar spine,the first and second side lines of the bladder meridian and Ashi point,weekly 2 times,8 times per course,2 consecutive courses of treatment.Before treatment,after treatment,and 1 month follow-up,the changes of the patient's lumbar spinal stenosis specific scale(SSM),modified Oswestry dysfunction index(ODI),and 12 health survey summary scores(SF-12)were observed.Using SSM symptom or function score≥0.5,the criteria for grouping were first single-factor analysis,and then logistic regression was used to analyze the prognostic factors of the treatment.Results After 2 courses of treatment,the patient's SSM symptom score(2.25±0.56),SSM function score(2.06±0.67),ODI index(15.49±8.72),and SF-12 physiological score(36.31±7.35)were more significant than before treatment Improved,the difference was statistically significant(P<0.05),the SF-12 psychological score(49.70±9.47),the difference was not statistically significant compared with before treatment(P>0.05);the patient's SSM symptom score(2.22±0.54)was followed up for one month,SSM function score(2.09±0.66),ODI index(15.53±8.23),SF-12 physiological score(36.55±7.25),SF-12 psychological score(50.62±9.17),which are significantly better than before treatment,and the difference is statistically significant(P<0.05),the difference was not statistically significant(P>0.05)after 2 courses of treatment.The univariate logistic regression analysis of each influencing factor showed that:BMI,baseline symptom dimension,baseline functional dimension,foraminal stenosis,lateral recess stenosis,and two-stage stenosis had statistically significant differences between the effective and ineffective groups(P<0.05).Conclusion Bloodletting combined with drug bamboo cups has a certain clinical effect on degenerative lumbar spinal stenosis.

Based on the resutls of literature review and interviews of experts, two rounds of Delphi surveys were conducted. The mean, importance ratio, coefficient of variation and coordination coefficient were used for assessment of survey from multiple perspectives, and finally form a framework model of factors affecting the efficacy of Tuina therapy. A total of 37 experts were selected for questionnaire surveys, the positive coefficients of experts' participatation in the first round and second round were 92.5% and 80.0%, respectively. The overall coordination coefficient in the second round is 0.68. The items were included into the consensus meeting if the importance ratio of items were equal to and more than 80%. After the expert consensus meeting, 22 items were included to form a framework model of factors affecting the efficacy of Tuina therapy, and summarized as 5 major influencing factors, including diagnostic factors, treatment factors, prognostic factors, patient factors, and doctor-patient communication. This framework can guide and help young Tuina practitioners to improve clinical efficacy. It is also clearly pointed out that the effect of Tuina for pain is not only related to disease diagnosis or manipulation, but also related to home exercise, health care, and doctor-patient communication.