The development of membrane separation technology in antibioti cs extraction was presented. The application of high performance capillary electr ophoresis, aqueous two-phase system and reverse micelles extraction were also b riefly introduced. Besides, the foreground of these modern separation technolog ies was discussed.

Basic Helix-Loop-Helix Transcription Factors ; metabolism ; Chromosome Aberrations ; DNA Nucleotidylexotransferase ; metabolism ; Humans ; Immunoglobulin Light Chains ; metabolism ; Immunoglobulin Light Chains, Surrogate ; Lymphoma, B-Cell ; genetics ; metabolism ; pathology ; Lymphoma, T-Cell ; genetics ; metabolism ; pathology ; Membrane Glycoproteins ; metabolism ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; genetics ; metabolism ; pathology ; Proto-Oncogene Proteins ; metabolism ; T-Cell Acute Lymphocytic Leukemia Protein 1

Objective To evaluate the efficacy and safety of oxycodone hydrochloride for postoperative analgesia in patients who received spin surgery.Methods Sixty -nine patients treated with spin surgery were included in this study and randomly divided into treatment group ( n=34 ) and control group ( n=35).Half an hour before the end of operation ,the patients of the two group were given oxycodone hydrochloride and morphine 0.07 mg · kg-1 , respectively.After extubation , patient -controlled analgesia pump was given with the background dosage of 0.5 mg · h -1 and one time push 1 mg of oxycodone hydrochloride or morphine.The mean arterial pressure ( MAP) , and heart rate were com-pared in the time points of entering the operation room ( T0 ) ,tracheal in-tubation ( T1 ) , 5 min after tracheal intubation ( T2 ) , and 15 min after tra-cheal intubation(T3) between the two groups.The recovery time, extu-bation time ,visual analogue scale ( VAS) ,observer assessment of sedation ( OAA/S ) score and safety were compared between the two groups . Results The MAP and heart rate were not statistically different between the two groups and among the time points ( P>0.05 ).The recovery time , extubation time , VAS, OAA/S score in treatment group were significant lower than those of control group( P<0.05 ).The adverse drug reaction rates were 17.14%and 8.82% in the control group and treatment group respectively with statistical difference ( P<0.05 ).Conclusion Compared with morphine , oxycodone hydrochloride is more effective and safe for postoperative analgesia in patients who received spin surgery.

OBJECTIVETo determine the feasibility of detecting target gene expression and evaluate the expression of homeobox gene HOX11L2 as well as its clinical significance in paraffin-embedded T-lymphoblastic lymphoma T-LBL.

METHODSHOX11L2 mRNA was analyzed by RT-PCR and real-time fluorescent quantitative PCR (RQ-PCR) on paraffin-embedded tissues in 54 cases of T-LBL.

RESULTSHOX11L2 expression was observed in 7 cases (13.0%). The age ranged from 5 to 15 years, with a median of 9 years. All of the HOX11L2 expressed patients had prior mediastinal masses, and 5 of them expressed high level of Ki67 antigen (PI> or =80%). Symptoms of CNS invasion were diagnosed in 2 cases. Significant differences in the age ratio (P < 0.05), the level of Ki67 antigen (P < 0.05) and the incidence of mediastinal involvement (P < 0.05) were observed between patients positive or negative for HOX11L2. Patients positive for HOX11L2 had a worse outcome than those negative for HOX11L2, with median survival of 7 and 11.5 month, respectively. No statistic difference was found in sex, clinical stages, CNS and bone marrow involvement between HOX11L2 positive and negative groups.

CONCLUSIONSDetection of target gene expression in paraffin-embedded tissues is feasible by RT-PCR or RQ-PCR. HOX11L2 expression was limited in childhood with T-LBL and probably associated with the development and poor prognosis of some pediatric T-LBL patients.

Feasibility Studies ; Homeodomain Proteins ; genetics ; metabolism ; Humans ; Paraffin Embedding ; Polymerase Chain Reaction ; methods ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; RNA, Messenger ; genetics

OBJECTIVETo study the clinicopathologic features, immunohistochemical findings and prognosis of precursor lymphoblastic lymphoma/acute lymphoblastic leukemia (LBL/ALL).

METHODSOne hundred and fifty-three cases of LBL/ALL were retrospectively analyzed. Immunohistochemical study was carried out. The pathologic findings were correlated with Ann Arbor tumor stage, Ki-67 index, other clinical parameters (including mediastinum/bone marrow involvement, hepato-splenomegaly, age and gender of the patients) and the survival data.

RESULTSStaining for TdT and CD99 was positive in 79.1% (121/153 cases) and 96.3% (131/136 cases), respectively. The cases were categorized into three groups according to the immunohistochemical findings, as follows: precursor T-cell, precursor B-cell and undefined. T-LBL/ALL accounted for 69.3% (106/153 cases) of all of the cases. The male-to-female ratio was 2.4:1 (including 75 males and 31 females). The median age at diagnosis was 17.5 years (ranged from 2 years to 68 years). Ninety-two patients (86.8%) presented with peripheral lymphadenopathy and 59 of them (55.7%) had mediastinal masses. Ninety-one cases (85.8%) were in stage III or IV at diagnosis. The 1-year and 5-year survival rates in patients with T-LBL/ALL were 36.1% and 8.1%, respectively. Patients older than 25 years and those presented in stage III or IV suggested a poor prognosis (P = 0.049 and 0.001, respectively). On the other hand, 29 of the 153 cases (19.0%) belonged to B-LBL/ALL. The median age of the patients was 14 years (ranged from 9 months to 75 years). The male-to-female ratio was 1.6:1 (including 18 males and 11 females). Seventeen patients (58.6%) presented with peripheral lymphadenopathy and 13 of them (44.8%) had involvement of bone marrow or peripheral blood. Mediastinal involvement was found only in 5 cases (17.2%). Twenty-one patients (72.4%) were in stage III or IV at diagnosis. The 1-year and 5-year survival rates were 53.3% and 36.7%, respectively. The remaining 11.7% cases (18/153 cases) were categorized as undefined type, with a negative staining for the following immuno-markers including: CD3ε/CD3, CD45RO, CD79a, CD20, MPO, CD5, CD56, cyclin D1, cytokeratin, neuron-specific enolase, chromogranin A and synaptophysin. The median age of the patients was 15.5 years (ranged from 4 to 53 years). The male-to-female ratio was 2.6:1 (including 13 males and 5 females). The percentage of T-LBL/ALL patients with mediastinal masses were significantly higher than that of B-LBL/ALL cases (P = 0.0003). There was no significant difference in prognostic parameters of T-LBL/ALL and B-LBL/ALL (P = 0.07). The difference in median survival time however was statistically significant (6.0 months +/- 1.1 months versus 15.0 months +/- 7.0 months).

CONCLUSIONSBoth TdT and CD99 are useful markers for the diagnosis of precursor lymphoblastic malignancy. T-LBL/ALL predominantly affects children or adolescent males and frequently presents with lymphadenopathy and mediastinal masses, whereas B-LBL/ALL are often accompanied by bone marrow and peripheral blood involvement. In general, T-LBL/ALL carries a poor prognosis. The prognostic criteria include age of older than 25 years and a classification of stage III or IV disease.

12E7 Antigen ; Adolescent ; Adult ; Age Factors ; Aged ; Antigens, CD ; metabolism ; Bone Marrow ; pathology ; Cell Adhesion Molecules ; metabolism ; Child ; Child, Preschool ; DNA Nucleotidylexotransferase ; metabolism ; Female ; Humans ; Immunophenotyping ; Male ; Middle Aged ; Neoplasm Staging ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; pathology ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; pathology ; Prognosis ; Retrospective Studies ; Survival Rate ; Young Adult

Objective To study the application of the trinity model and trinity forecasting method in predicting the incidence trend of pulmonary tuberculosis(PTB).Methods By applying the monthly PTB incidence data in Zhe-jiang Province from 2011 to 2021,a prediction model was constructed based on the trinity model and trinity forecas-ting method.Predictive performance of the model was evaluated.Results The mean relative prediction errors of model 1 and model 2 based on trinity model and trinity forecasting method were 7.94％and 8.43％,respectively.The mean relative prediction error obtained by adopting autoregressive integrated moving average(ARIMA)model was 8.87％,and the above mean relative prediction error were all in the range of 7.9％-8.9％,which presented an excellent performance of the forecasting model.Conclusion The trinity model is an excellent time series forecasting model,and the trinity forecasting method is an excellent time series forecasting method,with high application value.

OBJECTIVETo explore the clinical effects of unilateral pedicle screw fixation and transforaminal lumbar interbody fusion (TLIF) through paraspinal muscle approach for recurrent lumbar disc herniation combined with lumbar instability.

METHODSA total of 35 patients with recurrent lumbar disc herniation combined with lumbar instability were treated between March 2008 and May 2010, including 15 patients managed by the paraspinal muscle approach with unilateral pedicle screw fixation and transforaminal lumbar interbody fusion (TLIF) (unilateral fixation group) and 20 patients by the posterior midline approach with bilateral pedicle screw fixation and posterior lumbar interbody fusion (bilateral fixation group). Operation time and intraoperative blood loss were observed, preoperative and postoperative JOA score and VAS score in low back pain and legs pain, the interbody fusion condition were compared between two groups.

RESULTSAll patients were followed up from 6 to 30 months with an average 16.8 months. All clinical symptoms had obviously improved postoperatively. X-rays showed good interbody fusion (only 1 case did not obtain fusion in bilateral fixation group) without cage displacement or settlement and implant loosening or breakage. There was significant difference in operation time and the intraoperative blood loss between two groups (P < 0.05). Postoperative JOA score had obviously decreased than preoperative one (P < 0.05). At 1 week after surgery, there was significant difference in VAS score of low back pain between two groups and there was no significant difference in VAS score of legs pain between two groups (P > 0.05); at final follow-up, there was no significant difference in VAS score of low back pain and legs pain between two groups (P > 0.05).

CONCLUSIONTwo methods both can obtain satisfactory effect in treating recurrent lumbar disc herniation combined with lumbar instability. Through the paraspinal muscle approach with unilateral pedicle screw fixation and TLIF has advantages of smaller surgical incision, shorter operation time, less intraoperative blood loss, faster relief in low back pain after operation, etc.

Aged ; Female ; Humans ; Intervertebral Disc Displacement ; physiopathology ; surgery ; Lumbar Vertebrae ; physiopathology ; surgery ; Male ; Middle Aged ; Pedicle Screws ; Recurrence ; Spinal Fusion ; methods

OBJECTIVETo investigate the clinicopathological and immunohistochemical features of lymphoblastic lymphoma (LBL).

METHODSA retrospective clinicopathological study of 96 cases LBL was carried out. Immunohistochemical staining was used for the characterization and immunophenotyping.

RESULTSThe patients age ranged from 4 to 72 years, with a median of 16 years, 69 patients were male and 27 female. Seventy-three cases had superficial or multi-lymphoadenopathy and 31 of them had mediastinal masses. Bone marrow was involved in 15 cases. Seventy-three cases were in clinical stages III and IV. The median survival of the followed-up patients was 5.5 (2 approximately 120) months. TdT and CD99 positive reactions were 75.0% and 92.7%, respectively. Of the 96 cases, 78 displayed T-cell marker positivity and 18 B-cell markers. 82.1% of the patients younger than 30 years of age had significantly higher incidences of T-LBL (64 patients), and 93.6% of the patients with mediastinal masses expressed T-cell markers. The poor prognostic factors were T-cell tumors, clinical stages III and IV, Ki-67 PI < 80% and no chemotherapy (P < 0.01).

CONCLUSIONIn children and young males, mediastinal masses with superficial or multi-lymphoadenopathy favors the diagnosis of LBL, but negative TdT reaction can not exclude this diagnosis. T-LBL is more common than B-LBL. Clinical stages, immunophenotypes and the level of Ki-67 expression were closely related with prognosis of LBL.

Adolescent ; Adult ; Aged ; Antigens, CD20 ; analysis ; CD79 Antigens ; analysis ; Child ; Child, Preschool ; Female ; Follow-Up Studies ; Humans ; Immunohistochemistry ; Ki-67 Antigen ; analysis ; Leukocyte Common Antigens ; analysis ; Male ; Middle Aged ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; pathology ; Prognosis ; Survival Analysis ; Young Adult

Objective:To explore the clinical effects of unilateral pedicle screw fixation and transforaminal lumbar inter-body fusion (TLIF) through paraspinal muscle approach for recurrent lumbar disc herniation combined with lumbar instability. Methods:A total of 35 patients with recurrent lumbar disc herniation combined with lumbar instability were treated between March 2008 and May 2010,including 15 patients managed by the paraspinal muscle approach with unilateral pedicle screw fixation and transforaminal lumbar interbody fusion (TLIF) (unilateral fixation group) and 20 patients by the posterior midline approach with bilateral pedicle screw fixation and posterior lumbar interbody fusion (bilateral fixation group). Operation time and intraoperative blood loss were observed ,preoperative and postoperative JOA score and VAS score in low back pain and legs pain,the interbody fusion condition were compared between two groups. Results:All patients were followed up from 6 to 30 months with an average 16.8 months. All clinical symptoms had obviously improved postoperatively. X rays showed good in-terbody fusion (only 1 case did not obtain fusion in bilateral fixation group ) without cage displacement or settlement and im-plant loosening or breakage. There was significant difference in operation time and the intraoperative blood loss between two groups (P<0.05). Postoperative JOA score had obviously decreased than preoperative one (P<0.05). At 1 week after surgery, there was significant difference in VAS score of low back pain between two groups and there was no significant difference in VAS score of legs pain between two groups (P>0.05);at final follow up,there was no significant difference in VAS score of low back pain and legs pain between two groups (P>0.05). Conclusion:Two methods both can obtain satisfactory effect in treating recurrent lumbar disc herniation combined with lumbar instability. Through the paraspinal muscle approach with unilateral pedicle screw fixation and TLIF has advantages of smaller surgical incision,shorter operation time,less intraoperative blood loss,faster relief in low back pain after operation,etc.

Objective We conducted an epidemiologic investigation to determine the source of infection on an avian influenza (H5N1) case who returned from Guangzhou,in Hong Kong.Methods Data related to epidemiologic investigation,medical observation on close contacts,Syndromic Surveillance on poultry salesmen,emergency monitoring,detection of the samples,source tracing on potential Avian influenza virus (H5,H7,H9) infected people,situation on environment pollution by avian influenza virus in the markets etc.were gathered.The determination of infection source was through comparing the different genes between the case and positive environmental samples.Results The infected case witnessed the procedure of how a live duck was killed,in market A in Guangzhou during May 17th to 19th.The case was diagnosed as respiratory tract infection in 2 Third-grade-Class A hospitals in Guangzhou on May 23th and 24th.The diagnosis was made as Avian influenza cases on May 26th after going back to Hong Kong.23 close contacts and 34 markets poultry salesmen did not show any ILI related symptoms.However,2 poultry salesmen from the markets nearby the place where the Avian influenza case stayed,were detected having positive H9 avian influenza antibody,with the H9 positive rate as 6.06％ (2/33).Among the environmental samples in the 2 markets nearby home of the patient,chopping block was found to have carried H5,with positive rate as 9.8％(5/51) while poultry cage was found to carry H9,with the positive rate as 2.0％(1/51).A H5 positive sample was found with clade 2.3.2.1,same to the case,from a chopping block at the market B where the sources of poultry was the same as market A.Conclusion The source of infection seemed to come from the markets in Guangzhou,that calling for the strengthening of poultry market management,for avian influenza prevention.History related to contact of poultry should be gathered when a diagnosis of respiratory tract infection was made.Timely sampling and testing should be made to improve the sensitivity of diagnosis.