Bombs ; Cesium ; poisoning ; Humans ; Polonium ; poisoning ; Radiation Injuries ; Terrorism

Objective To observe the prevalence and risk factors of chronic low back pain in puerperas after childbirth.Methods Eight hundred and eighty-one puerperas were selected,among whom 459 cases had uterine-incision delivery,and 422 cases had spontaneous delivery.The age,height and weight of pregnant women,birth weight of newborn,history of preoperative low back pain,parity and mode of delivery were recorded.The rate of chronic low back pain occurring within 1 month after childbirth and continuing for 3 months was recorded by telephone.The factors with P values less than 0.05 would enter the Logistic regression analysis to screen the risk factors of chronic low back pain.Results Two hundred and fifty-nine puerperas (259/881,29.4％) appeared chronic low back pain,of whom 157 puerperas (157/459,34.2％)delivered by uterine-incision and 102 puerperas (102/422,24.2％) delivered spontaneously,and the difference was statistically significant (P ＜ 0.01).Six hundred and fifty-eight puerperas had no history of preoperative low back pain,and 150 puerperas (150/658,22.8％) appeared newly developed chronic low back pain.Logistic regression analysis showed that mode of delivery,parity and history of preoperative low back pain were the risk factors of chronic low back pain.Condusions The rate of chronic low back pain in puerperas after childbirth is 29.4％,and the newly developed chronic low back pain is 22.8％.Uterineincision delivery,multiparity and history of preoperative low back pain are the risk factors of chronic low back pain for puerperas after childbirth.

This study was aimed to explore the anti-leukemic effect of scutellaria extract SBX in human leukemia cell lines and its mechanism. The leukemia cell lines, including HL-60, NB4, U937, K562 and Jurkat, were cultured in vitro and proliferative inhibition of these cell lines was detected by CellTiter-Glo Luminescent Cell Viability Assay in order to screen the most sensitive cell line. The effect of SBX on cell cycle was analyzed by flow cytometry and the protein expressions determined by Protein Pathway Array respectively. The results indicated that SBX (10 - 200 µmol/L, for 72 h) significantly inhibited the proliferation of different leukemia cell lines in a dose-dependent manner (r value was 0.86, 0.88, 0.95, 0.94, 0.96, respectively), the HL-60 was the most sensitive cell line. Flow cytometric analysis showed that SBX (50, 10 µmol/L, for 48 h) arrested HL-60 cells in the G(0)/G(1) phase. In addition, protein expression of p-PKC α/βII, p-p38, Cdc25B, XIAP of HL-60 cells increased, and p-AKT, p-SAPK/JNK, Notch4, Cdk4, Cdc2, cyclin E, Akt, Bcl-2, Bax, cdc42, TNF-α, p27, CaMKKa decreased after exposure to SBX (50 µmol/L, for 48 h). It is concluded that SBX can inhibit the proliferation of different leukemia cell lines, and HL-60 is a sensitive cell line. SBX significantly influences EGFR, Ras/Raf/MAPK and Notch signaling pathway, through which effects the expression of cell cycle-related proteins resulting in arrest of HL-60 cells in G(0)/G(1).
Cell Cycle ; Cell Cycle Proteins ; metabolism ; Cell Line, Tumor ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Leukemia ; drug therapy ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; Scutellaria ; Signal Transduction ; drug effects ; Tumor Necrosis Factor-alpha ; metabolism ; bcl-2-Associated X Protein ; metabolism

OBJECTIVETo study the new hydrolysate of aconitine using HPLC-MS(n) and quantum chemistry calculation.

METHODThe HPLC method was applied in gradient elution program and the mass spectrometry was in positive ion mode. Geometries of the possible hydrolysates were optimized at DFT/6-31G(d) level.

RESULTThe new hydrolysate was found and its protonated molecularions was at m/z 482. The quantum chemistry calculation results show that the product of elimination reations at C8 and C15 got the lowest energy conformation. The compound at m/z 482 was decluced to be the hydrolysate of carbony at C15.

CONCLUSIONDelydration aconine was detected for the first time and the new hydrolysis pathways of aconitine in water were deduced.

Aconitine ; chemistry ; Chromatography, High Pressure Liquid ; Hydrolysis ; Mass Spectrometry ; Models, Molecular ; Molecular Conformation

Objective To establish an automatic synthesis method for 11C-carfentanil (CFN) as an novel opiate receptor radioligand and study its biodistribution in rats. Methods 11C-Triflate-CH3 was bubbled into 0.5 mg precursor desmethyl-CFN (which was dissolved in 0.15 ml DMSO) to generate 11C-CFN in a V-tube at room temperature. Sep-Pak C2 column was used for purification of 11C-CFN, which was eluted by 3ml binary system aqueous solution, 10 ml water thrice, and then I ml ethanol. The biodistribution (% ID/g) of 11C-CFN in SD rats was studied. SPSS 13.0 was used for statistical analysis. Non-normal distribution data were analyzed using nonparametric test. Results The synthesis time for 11C-CFN was 20 min (end of bombardment, EOB). The synthesis yield was (35.5 ± 2.2) % on average (n = 12, uncorrected)with the radiochemical purity over 98%. Biodistribution study in rats showed that the tracer had a high brain uptake, rapid blood clearance, and a metabolic pathway via liver and kidney. The highest tracer uptake was in thalamus (4.26 ± 0.89) % ID/g and striatum (4.05 ± 1.08) % ID/g at 5 min after injection, followed by cerebral cortex (2.63±0.89) %ID/g, pons (2.26 ±0.57) % ID/g, hippocampus (2. 17 ±0.55) %ID/g and cerebellum (2. 15 ±0.39) %ID/g. Conclusions The automatic synthesis of 11C-CFN is fast and reliable, and this radioligand can be used for opiate receptor imaging.

Objective:To explore the correlation of tyrosine phosphatase-1/2 (SHP-1,SHP-2) with indoleamine 2,3-dioxygenase(IDO) in maternal fetal interface.Methods: The expression of SHP-1,SHP-2 and IDO were detected by Western blot method and the relationship of the proteins was analysed,in human chorionic villi and decidua tissues of 30 cases of artificial abortion patients.Results:The expression of SHP-1,SHP-2 were positively correlated withthe expression of IDO in human chorionic villi and de-cidua;the expression of SHP-1,SHP-2 and IDO in decidual tissues were higher than those in the villi.Conclusion: Normal physiological state of pregnancy,SHP-1 and SHP-2 may be involved in the regulation of immune tolerance by positive regulation of IDO expression at maternal fetal interface.

OBJECTIVETo analyze the cytogenetic characteristics of different age subgroups in patients with acute myeloid leukemia (AML), and to explore the relationship between age and cytogenetics.

METHODSBetween January 2004 and December 2011, Bone marrow (BM) samples from 640 patients with de novo AML were analyzed retrospectively. The analyses were performed according to standard culturing and banding techniques, and clonal abnormalities were defined and described according to the International System for Human Cytogenetic Nomenclature (ISCN 2009). The cytogenetic subtypes were performed as normal, balanced, and unbalanced karyotypes. In the last group, the age distribution of complex and monosome karyotypes were further analyzed. The patients were divided into 8 age groups: 0 - 9, 10 - 19, 20 - 29, 30 - 39, 40 - 49, 50 - 59, 60 - 69, and ≥ 70 year old groups.

RESULTSThe distribution of normal, balanced, and unbalanced karyotypes showed age specific characteristics. The incidence of normal karyotype increased from 6.67% (0 ∼ 9 year old) to 58.33% (≥ 70) (χ(2) = 20.68, P = 0.001) and balanced karyotype decreased from 73.33% (0 ∼ 9) to 11.11% (≥ 70) (χ(2) = 48.22, P < 0.01). The frequency of unbalanced karyotypes increased from 20.0% (0 ∼ 9) to 30.56% (≥ 70) (χ(2) = 18.963, P = 0.008). The frequency of complex karyotype was 6.67% in 0 - 9 year old group, followed by 0% in 10 - 19 and 20 - 29 year old group, and from 1.72% to 11.11% from 30 - 39 to ≥ 70 year old group (χ(2) = 8.341, P = 0.08). Monosome karyotype was only detected in patients in 30 year old or older groups. Although an increased tendency was observed with ages, there was no significant difference (χ(2) = 4.778, P = 0.311).

CONCLUSIONThe different age profiles of the cytogenetic subtypes may indicate the different mechanisms of the pathogenesis of AML, which may also offer beneficial information for etiological research of AML.

Adolescent ; Adult ; Age Factors ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Karyotype ; Karyotyping ; Leukemia, Myeloid, Acute ; genetics ; Male ; Middle Aged ; Retrospective Studies ; Young Adult

OBJECTIVETo analyze the genetic characteristics of EV71 strains isolated from HFMD cases in Ningxia Hui Autonomous Region in 2009.

METHODSIn 2009, totally 385 specimens from 344 HFMD cases were collected from Ningxia. Enterovirus isolation was performed in RD cell line from all the specimens. EV71 isolates were identified by specific RT-PCR from the positive cultures, and sequences of complete EV71 VP1 encoding region were determined for farther analyses.

RESULTSTotally from 126 EV strains isolated in this study, 58 EV71 strains (46%) were identified. And complete VP1 sequences of 46 EV71 strains were determined, and genetic analyses were performed. It was showed that the nucleotide identity of 46 Ningxia strains with the representatives of A and B genotypes were 81.7%-82.8% and 83.1%-85.2%, and the amino acid identity were 93.9%-95.9% and 96. 2%-97.9% respectively. The nucleotide identity of NingXia EV71 isolates with representatives of subgenotype C1, C2, C3, C4a, C4b, and C5 were 88.3%-90.6% (97.9%-99.6%), 88.3%-90.1% (97.9%-99.3%), 87.8%-89.0% (97.6%-98.9%), 94.2%-98.9% (97.9%-100%), 91.8%-94.1% (98.6%-99.6%), and 86.7%-89.1% (97.9%-98.9%). Phylogenetic tree analysis revealed that 46 stains were clustered with reference stains of subgenotype C4 and the Ningxia EV71 isolates were belonged to subgenotype C4a.

CONCLUSIONEV71 of subgenotype C4a had spread widely in Ningxia in 2009, which was absolutely predominant type in Ningxia in 2009 and also as the predominant type in China mainland since 2005.

Capsid Proteins ; genetics ; China ; epidemiology ; Enterovirus A, Human ; classification ; genetics ; isolation & purification ; Female ; Hand, Foot and Mouth Disease ; epidemiology ; virology ; Humans ; Molecular Sequence Data ; Phylogeny

BACKGROUNDThe preclinical experiments and studies of congener drugs show icotinib, a new epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, can specifically bind to the tyrosine kinase domain of the EGFR, block the EGFR related signal, thereby inhibit the growth of tumor cell. The objective of this study was to investigate the safety, tolerability and dose-related biologic effects of icotinib in patients with non-small cell lung cancer (NSCLC) in a Chinese patient population.

METHODSThis was an open-label, phase I, dose escalation, safety/tolerability trial of oral icotinib (100 to 400 mg), administered twice per day for 28-continuous-day cycles until disease progression or undue toxicity.

RESULTSForty patients with stage IIIB (15%) or IV (85%) NSCLC were included in the study. They had mainly adenocarcinoma (85%), with a performance status (PS) of 0 (45%) or 1 (55%) and less than half the patients (45%) had histories of smoking and all were pretreated by at least one regimen of chemotherapy. Patients were assigned to three dose levels of 150 mg b.i.d, 200 mg b.i.d, or 125 mg t.i.d. The follow-up periods ranged from 5 to 80 weeks. Adverse events were found in 35% patients, most of which were mild and reversible. The adverse events mainly occurred in the first 4 weeks and included rash (25%), diarrhea, nausea and abdominal distention. One definite interstitial lung disease (ILD) was found in a patient in the dose of 200 mg b.i.d. According to an 8-week assessment, one (2.5%) patient receiving 150 mg gained complete response (CR) that persisted for 44 weeks, seven (17.50%) patients had partial remission (PR), and 18 (45%) patients had stable disease (SD). The objective response including CR + PR was 20%. The median time of progression-free survival for the 40 patients was 20 weeks (range: 12 to 32 weeks). The response was not affected by pathological type, history of smoking, or numbers of previous therapeutic regimens. No relationship between dose, response, adverse effect, or duration of the study was observed.

CONCLUSIONSIcotinib, given as oral twice daily, showed favorable safety and tolerability. Mild and reversible rash, diarrhea, and nausea were the main adverse events. Antitumor activity was obvious at each dose in heavily pretreated patients. Pharmacodynamic evaluations and further phase II/III trials are in progress.

Aged ; Aged, 80 and over ; Antineoplastic Agents ; therapeutic use ; Carcinoma, Non-Small-Cell Lung ; drug therapy ; mortality ; pathology ; Crown Ethers ; therapeutic use ; Disease-Free Survival ; Female ; Humans ; Male ; Middle Aged ; Quinazolines ; therapeutic use ; Receptor, Epidermal Growth Factor ; antagonists & inhibitors

Objective To evaluate the efficacy and safety of the new left ventricular circulation assist device iVAC 2L in high-risk percutaneous coronaryintervention(HR-PCI)in Chinese patients.Methods We reported 6 PCIs in 5 patients supported by iVAC 2L,a new left ventricular circulation assist device,performed in Macao from September 2022 to March 2023.All patients were assessed by heart team and categorize to be high-risk for procedure.Clinical and intra-procedural data were analyzed.iVAC 2L-related complications and 30-day results were also documented.Results Insertion and removement of iVAC 2L successfully performed in all the 5 patients.Three of them underwent complete revascularization in the index procedure;one failed for the first time due to intolerance of the prolonged procedure,but succeeded for the reattempt of complete revascularization a month later,with the support of iVAC 2L.PCI was abandoned due to poor vessel condition.iVAC 2L,the new left ventricular circulation assist device,supported effectively during the 6 procedures.The patients were stable during the procedure.The success rate of hemodynamic support was 100％.No iVAC 2L-related complications and 30-day major adverse cardiac and cerebral events occurred,the 30-day survival was 100％.Conclusions Initial experience suggested that the new left ventricular circulation assist device iVAC 2L could provide effective and safe support in high-risk PCI.