Relationship between PMP, FN, vWF and Bleeding Degree in Patients with Acute Leukemia / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To detect the serum levels of platelet microparticle (PMP), fibronectin (FN), and von Willebrand Factor (vWF) in acute leukemia (AL) patients with thrombocytopenic and to analyze the relationship of the serum levels of PMP, FN and vWF with bleeding degree.</p><p><b>METHODS</b>One hundred and one newly diagnosed AL patients from May 2014 to May 2017 were enrolled the AL group. According to the WHO standard of bleeding stratification, 101 AL patients were divided into 5 sub groups: 0, 1, 2, 3 and 4 score groups; 52 normal persons subjected to physical examination were enrolled in control group. The PMP level was detected by flow cytometry; the FN and vWF levels were detected by ELISA. The levels of PMP, FN and vWF were compared between the AL group and the control group. The serum levels of PMP, FN and vWF were compared according to bleeding degree group. The relationship of bleeding degree with the serum levels of PMP, FN and vWF was analyzed.</p><p><b>RESULTS</b>The patients with newly diagnosed acute leukemia aged 18 to 60, and accounted for 61.39%. The degree of bleeding was mainly 1 score, which accounted for 38.61%. The serum levels of PMP, vWF and FN AL groups were significantly higher than those in control group (6.06%±4.38% vs 0.89%±0.50%, 205.82±24.89 vs 58.04±13.35 µg/L, 398.29±46.93 vs 311.37±26.02 µg/L)(P<0.001). The serum levels of PMP, FN and vWF were different among 5 subgroup (P<0.01); the level of PMP and FN were the highest in 0 score group and the lowest in 4 score group; the vWF level was the highest in 4 score groups and the lowest in 0 score group. The bleeding degree in the patients with acute leukemia negatively correlated with PMP level, and positively with NF and vWF levels (r=-0.753, r=0.648, r=0.805).</p><p><b>CONCLUSION</b>According to the relationship of the bleeding degree with serum levels of PMP, FN, vWF in patients, the detection of PMP, vWF and FN levels can help to evaluale the bleeding degree in the patients.</p>

Rapid analysis on chemical constituents from roots of Gentiana crasicaulis by ultra-high performance liquid chromatography coupled with hybrid quadrupole-orbitrap mass spectrometry / 中草药

Objective: An ultra-high performance liquid chromatography coupled with hybrid quadrupole-orbitrap mass spectrometry (UPLC- hybrid quadrupole-orbitrap MS) method was developed to rapidly analyze and identify the chemical constituents from the roots of Gentiana crasicaulis. Methods: The 100% methanol extract was separated on an ACQUITY UPLC BEH C18 column (100 mm ×, 2.1 mm, 1.7 μm), and eluted with a gradient of methanol-water containing 0.1% formic acid. Constituents in the roots of G. crasicaulis were identified by HRMS in the positive and negative ion modes using both full scan and two-stage threshold-triggered mass modes. Results: A total of 34 compounds, including 13 iridoids, 5 flavonoids, 5 esters, 3 triterpenoids, 2 organic acids, 1 phenylpropanoid, and 5 others compounds were identified. Among them, 12 compounds were unambiguously identified by comparing with reference standards. Fifteen compositions wre reported for the first time in the roots of G. crasicaulis. Conclusion: Chemical constituents in the roots of G. crasicaulis were identified fast with UPLC-Q-Exactive hybrid quadrupole-orbitrap mass spectrometer technology to provide the scientific basis for the study on the material basis of the separation and crassicaulis chemical constitents.

Content determination of twelve major components in Tibetan medicine Zuozhu Daxi by UPLC / 中国中药杂志

A quantitative analytical method of ultra-high performance liquid chromatography (UPLC) was developed for simultaneously determining twelve components in Tibetan medicine Zuozhu Daxi. SIMPCA 12.0 software was used a principal component analysis PCA) and partial small squares analysis (PLSD-DA) on the twelve components in 10 batches from four pharmaceutical factories. Acquity UPLC BEH C15 column (2.1 mm x 100 mm, 1.7 µm) was adopted at the column temperature of 35 °C and eluted with acetonitrile (A) -0.05% phosphate acid solution (B) as the mobile phase with a flow rate of 0. 3 mL · min(-1). The injection volume was 1 µL. The detection wavelengths were set at 210 nm for alantolactone, isoalantolactone and oleanolic; 260 nm for trychnine and brucine; 288 nm for protopine; 306 nm for protopine, resveratrol and piperine; 370 nm for quercetin and isorhamnetin. The results showed a good separation among index components, with a good linearity relationship (R2 = 0.999 6) within the selected concentration range. The average sample recovery rates ranged between 99.44%-101.8%, with RSD between 0.37%-1.7%, indicating the method is rapid and accurate with a good repeatability and stability. The PCA and PLSD-DA analysis on the sample determination results revealed a great difference among samples from different pharmaceutical factories. The twelve components included in this study contributed significantly to the quantitative determination of intrinsic quality of Zuozhu Daxi. The UPLC established for to the quantitative determination of the twelve components can provide scientific basis for the comprehensive quality evaluation of Zuozhu Daxi.

One stage anterior-posterior approach for traumatic atlantoaxial instability combined with subaxial cervical spinal cord injury / 中华创伤杂志(英文版)

<p><b>OBJECTIVES</b>To explore the clinical features of traumatic atlantoaxial instability combined with subaxial cervical spinal cord injury (CSCI), and to analyze the feasibility, indication and therapeutic effects of anterior-posterior approach in such cases.</p><p><b>METHODS</b>From March 2004 to September 2009, 16 cases with this trauma were admitted and surgically treated in our department. Before surgery, skull traction was performed. Posterior atlantoaxial pedicle screw internal fixation and bone graft fusion were conducted to manage traumatic atlantoaxial instability. As for subaxial CSCI, anterior cervical corpectomy or discectomy decompression, bone grafting and internal fixation with steel plates were applied.</p><p><b>RESULTS</b>All operations were successful. The average operation time was 3 hours and operative blood loss 400 ml. Satisfactory reduction of both the upper and lower cervical spine and complete decompression were achieved. All patients were followed up for 12 to 36 months. Their clinical symptoms were improved by various levels. The Japanese Orthopaedic Association (JOA) scores ranged from 10 to 16 one year postoperatively, 13.95+/-2.06 on average(improvement rate equal to 70.10%). X-rays, spiral CT and MRI confirmed normal cervical alignments, complete decompression and fine implants'position. There was no breakage or loosening of screws, nor exodus of titanium mesh or implanted bone blocks. The grafted bone achieved fusion 3-6 months postoperatively and no atlantoaxial instability was observed.</p><p><b>CONCLUSIONS</b>Traumatic atlantoaxial instability may combine with subaxial CSCI, misdiagnosis of which should be especially alerted and avoided. For severe cases, one stage anterior-posterior approach to decompress the upper and lower cervical spine, together with reposition, bone grafting and fusion, as well as internal fixation can immediately restore the normal alignments and stability of the cervical spine and effectively improve the spinal nervous function, thus being an ideal approach.</p>

Surgical treatment of upper cervical vertebra disease from high anterior cervical retropharyngeal approach / 中国基层医药

Objective To study the clinical result of the surgical treatment of upper cervical vertebra disease from high anterior cervical retropharyngeal approach.Methods Among 14 patients,there were 7 C_(2.3)disc hernia- rions combined with C_(2.3)dislocations,3 Hangman fractures,2 odontoid process fractures and 2 C_3 tumors.All patients underwent the high anterior cervical retropharyngeal approach.10 cases were given discectomy of C_(2.3)or focus clear- ance of C_3,iliac bone autograft or titanium cage filled and internal fixation with titanium plate.2 cases of odontoid process fractures were given anterior screw fixation.Results 14 cases got successful exposure.The decompression, reduction,lesion clearance and fusion with internal fixation were done in all patients.There were no important vascu- lar or nerve injuries.The surgical treatment could improve the spinal cord nerve function to a certain degree for the cases with compression of spinal cord.Conclusion Good exposure of upper cervical spine and effective surgical oper- ation could be achieved from high anterior cervical retropharyngeal approach,with minimal trauma and complication, and it was a favorable approach.