We have found the parallel relationship between the live cell number of several tumor cell lines and the formation of MTT formazan with MTT colorimetric assay. The MTT colorimetric assay was compared with ~3H-Tdr incorporation assay for the proliferation of mouse spleen cells induced by mitogens or the activity of rat/mouse IL2,the results suggested that the ~3H-Tdr incorporation assay can be replaced by MTT colorimetric assay. MTT colorimetric assay have the advantages of simplicity, rapidity,save any radioisotope and no specific equivepment, etc, so under some conditions it would be a useful method for measuring cell proliferation or cytotoxicity in a laboratory.

Objectives To investigate and evaluate the preventive and therapeutic effects of celecox ib,a selective cyclooxygenase-2(COX-2)inhibitor,on multiple colorectal adenorna and compare it with aspirin.Methods Ninty-six patients with colorectal multiple adenoma were randomly divided into A,B and C groups.Adenomas in all patients were removed with high-frequency eleetrocoagulation,electroexci- sion or argon plasma coagulation(APC)under colonoscopy.Then,group A were administered celecoxib 200 mg twice daily,group B aspirin 50 mg twice daily,group C served as control.Colonoscopy was per formed every 6 months in the first year,and every year in order to observe and evaluate the recurrence rate of adenoma and the side effects after the treatment.Results Twenty-seven patients in group A,26 pa- tients in group B and 27 patients in group C had completed the treatment.At the end of the treatment, on PP/ITT analysis,the cure rate of the eolorectal adenoma were 84.4%/100% ,78.1%/96.2% and 75.0%/88.9% in group A,B and C,respectively.During the first year of follow-up,there were 1 ,1 and 6 cases which were found recurrences of the adenomas in group A,B and C,respectively.The recurrence rates of coloreetal adenomas in group A(3.7%)and group B(4.0%)were significantly low er than that in group C(24.0%) (P＜0.05 and＜0.05,respectively).At the end of follow-up,the total recurrence rate of colorectal adenomas in group A(14.80%)and group B(19.2%)were significant- ly lower than that in group C(46.2%)(P＜0.05 and＜0.05).While the side-effective rate regroup A (3.3%)was significantly lower than that in group B(22.5%)(P＜0.05).Conclusions After re- section of the multiple colorectal adenomas,both the selective inhibitor of COX-2,celeeoxib and the non- selective inhibitor of COX-2,aspirin,may reduce its recurrence rate,but the former has a good tolerance and lower side-effects.

OBJECTIVE: To observe the expression pattern of caspase-3 and HCLS1-associated protein X-1 (HAX-1) at different time after cerebral contusion in rat, and explore the new method for estimating the injury interval. METHODS: The cerebral contusion model was established using adult SD male rats. Then the rats were randomly allocated into 8 groups: 2 h, 6 h, 12 h, 1 d, 3 d, and 7 d after cerebral contusion, sham-operation and normal control. Expression of caspase-3 and HAX-1 protein after cerebral contusion in rat was detected by Western blotting. Laser scanning confocal microscope was used to observe the number of HAX-1 positive cells and TUNEL-stained cells after cerebral contusion. RESULTS: The expression of caspase-3 increased parallelly with the time after cerebral contusion and reached the peak value on 3 d. The expression of caspase-3 decreased gradually and still maintained a high level expression on 7 d (P < 0.05). The expression of HAX-1 positive cell went up after injury, and reached the peak value at 6 h (P < 0.05), then turned down gradually after 12 h and went out of detection after 3 d. The number of TUNEL-stained cells increased obviously at 2 h and reached the peak value on 3 d. The number of TUNEL-stained apoptotic cells decreased gradually and still maintained a high level expression on 7 d (P < 0.05). CONCLUSION The expression of caspase-3 and HAX-1 after cerebral contusion has time sequential regularity, which may provide new evidence for forensic diagnosis of cerebral contusion interval.
Animals ; Blotting, Western ; Brain Injuries/pathology* ; Carrier Proteins/metabolism* ; Caspase 3/metabolism* ; Cerebellum/pathology* ; In Situ Nick-End Labeling ; Intracellular Signaling Peptides and Proteins ; Male ; Rats ; Rats, Sprague-Dawley

This study was purposed to analyze the characteristics of morphology, immunology, cytogenetic and molecular biology of leukemia cells in 12 AML patients with Ph(+) and their correlation with survival of patients. 12 patients with Ph(+) AML were diagnosed according to diagnostic criteria of WHO and existence of t(9;22) (q34;q11) or t(9;22) abnormality, meanwhile no evidence of CML chronic phase was observed. The results showed that 8 out of 12 cases were confirmedly diagnosed to be AML by morphologic and immunophenotypic examination, 4 cases were diagnosed as myeloid and B lymphocytic mixed acute leukemia. The Ph chromosome was detected in 10 cases by chromosome analysis at the first time of diagnosis, and some of the cases had coexistence of complex chromosome and/or normal karyotype. BCR-ABL transcript was detected in all 12 cases, including 7 cases with b3a2, 1 case with b2a2, 1 case with b2a2 variants, 2 cases with e1a2 and 1 case with e18a2. The 12 cases all got complete remission after chemotherapy and/or gleevec treatment, out of them 3 cases received chemotherapy and gleevec treatment, but 2 cases died; 9 cases received allogeneic hematopoietic stem-cell transplantation (allo-HSCT), 1 case died from relapse, among them 1 case died from transplant complications. The median survival was 24 (8 - 80) months, the overall survival of 3 years was (51.4 ± 17.7)%. It is concluded that the Ph(+) AML is a acute myelogenous leukemia with poor prognosis, but long-term survival may be achieved with HSCT as quick as after complete remission from gleevec and chemotherapy treatment. Meanwhile, the detection of BCR-ABL gene and it variants may be give more opportunity for diagnose and treatment, which can be used as routine screening for newly diagnosed leukemia.
Adult ; Child ; Female ; Hematopoietic Stem Cell Transplantation ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; diagnosis ; Male ; Middle Aged ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; diagnosis ; Prognosis

AIMTo study the metabolites of R, S-1-(2-methoxypheyl)-4-[3-(naphthal-yl-oxy)-2-hydroxypropyl] -piperazine, (naftopidil, NAF), a novel antihypertensive drug in rat plasma.

METHODSThe rat plasma samples were analyzed by LC/MS after oral administration of NAF. According to MS relativity of metabolites and parent compound (NAF) and metabolic rule of compound with similar structure, the structure of potential metabolites were postulated. Phase I metabolites were identified by HPLC/MS and by comparison with authentic standards, phase II conjugates were indirectly identified with beta-D-glucuronidase in presence or absence of glucuronidase selective inhibitor D-saccharric acid beta-1,4-Lactone.

RESULTSPhase I metabolites desmethyl-naftopidil (DMN), (phenyl) hydroxynaftopidil (PHN), (naphthyl) -hydroxy-naftopidil (NHN) were separated and identified in rat plasma by comparison with reference substances, phase II conjugates, NAF and NHN glucuronide conjugates were separated and tentatively identified by hydrolysis with glucuronidase, the aglycones, NAF and NHN, were identified in rat plasma.

CONCLUSIONThe major metabolic pathway of NAF in rat plasma should be the hydroxylation of the phenyl or nephthyl moiety of NAF and demethylation of NAF. Therefore, (naphthyl) hydroxyl-metabolite and NAF followed by conjugation with beta-glueuronic acid.

Animals ; Antihypertensive Agents ; blood ; metabolism ; Chromatography, High Pressure Liquid ; Gas Chromatography-Mass Spectrometry ; Male ; Naphthalenes ; blood ; metabolism ; Naphthols ; blood ; metabolism ; Piperazines ; blood ; metabolism ; Rats ; Rats, Sprague-Dawley

To easily obtain plasmin-alpha(2)-antiplasmin complex (PAP) with high purity, the purification procedure was improved by authors. After urokinase activated fresh human platelet-deficient plasma had been applied to Lysine-Sepharose 4B affinity chromatography column, elutions were sequentially performed by several eluents with different ingredients. The results showed that 3.0 mg PAP could harvested from 100 ml fresh plasma by this method and the whole procedure could be finished within several hours. In conclusion, this procedure is simple, rapid, economical and high-yield.
Blotting, Western ; Chromatography, Affinity ; Electrophoresis, Polyacrylamide Gel ; Fibrinolysin ; analysis ; isolation & purification ; Humans ; Sepharose ; analogs & derivatives ; alpha-2-Antiplasmin ; analysis ; isolation & purification

OBJECTIVETo evaluate the clinical value of the comprehensive therapy of acupuncture, Chinese herbal medicine and rehabilitation in the treatment of post-stroke flaccid limb dysfunction.

METHODSThe four-center, single-blind, randomized and controlled research method was adopted, 240 qualified subjects were randomized into a comprehensive therapy group, an acupuncture group, a rehabilitation group and a Chinese herbal medicine group, 60 cases in each one, at the ratio of 1 1. In the comprehensive therapy group, the comprehensive therapy of acupuncture, Chinese herbal medicine and rehabilitation was applied. The acupuncture therapy included the scale acupuncture at middle line of vertex, lateral line 1 of vertex, lateral line 2 of vertex, etc. with the single reinforcing and reducing technique by the speed of needle insertion and withdrawal, and the body acupuncture therapy at the acupoints on the antagonistic muscles with the reinforcing and reducing technique by the needle rotation. The Chinese herbal medicine therapy included No. 1 stroke formula for the cases of liver and kidney yin deficiency and the upward disturbance of wind yang, No. 2 stroke formula for qi deficiency and blood stagnation, and the stagnation in meridians and No. 3 stroke formula for the interaction of phlegm and stasis and blockage of meridians according to the pattern/syndrome differentiation. The rehabilitation therapy focused on the promotion technique by putting the healthy limb. The simple acupuncture, rehabilitation and Chinese herbal medicine therapies as the comprehensive therapy group were applied in the acupuncture group, rehabilitation group and Chinese herbal medicine group separately. The Chinese medicine symptom, the limb motor function, the daily life activity, fainting needle reaction, allergic reaction and the others were taken as indices to evaluate the efficacy and safety of the treatment.

RESULTS(1) The results of the four indices named the Chinese medicine symptom, the limb motor function, the limb balance function, the daily life activity were all improved significantly after treatment as compared with those before treatment in four groups (all P < 0.01). (2) Concerning to the improvement degrees, the improvements of the above four indices in the comprehensive therapy group were more significant than those in the other three groups (P < 0.01, P < 0.05). The improvement in Chinese medicine symptom in the acupuncture group and the Chinese herbal medicine group were more significant than that in the rehabilitation group (both P < 0.05). The improvement of the upper limb motor function in the acupuncture group was more significant than that in the rehabilitation group and the Chinese herbal medicine group separately (both P < 0.05).

CONCLUSIONThe comprehensive therapeutic program of acupuncture, Chinese herbal medicine and rehabilitation is safe and effective in the treatment of post-stroke flaccid limb dysfunction. It is more advantageous in efficacy as compared with any simple therapy.

Activities of Daily Living ; Acupuncture Points ; Acupuncture Therapy ; Adult ; Aged ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Muscle Hypotonia ; drug therapy ; etiology ; rehabilitation ; therapy ; Stroke ; complications

To investigate the relationship between the single nucleotide polymorphism (SNPs) of the bcr and abl gene and chronic myelogeous leukemia (CML), the 9 sequence-tagged sites (STS) in bcr and abl gene were screened by DNA pooling and denaturing high performance liquid chromatography (dHPLC), and the results were varified by sequencing. The results showed that the polymorphism sites were detected in 4 out of the 9 STS fragments and there were 3 bases different from the reference sequence found in 3 fragments. In conclusion, the novel SNP in U07000 fragment shows significantly different frequencies between CML and controled people.
Chromatography, High Pressure Liquid ; methods ; Fusion Proteins, bcr-abl ; genetics ; Genes, abl ; genetics ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; genetics ; Polymorphism, Single Nucleotide ; Proto-Oncogene Proteins c-bcr ; genetics ; Sequence Analysis, DNA ; Sequence Tagged Sites

Objective To explore the distribution of water with high level arsenic and prevalence of arsenism along Huai'he River and the surrounding area of Hong'ze lake in Huai'an of Jiangsu. Methods Wate rsamples were collected and tested in 2008 from 18 villages of 6 towns according to history data in 3 counties like Xuyi,Jinhu and Hongze. Samples having arsenic level higher than 0.05 mg/L were investigated by epidemiological method and the patients were diagnosed by Standard of Diagnosis for Endemic Arsenism. Results All 5199 water samples were determined,and 260 water samples were exceeding the national drinking water quality level (0.05 mg/L) in 3 counties,the rates of exceeding diagnosis were 5.6%(247/4454),0.7%(4/597),6.0%(9/148) respectively. Total detected rate of endemic arsenic disease was 5.94%(128/2155). The detected rates of age group of 0 ～ ,20 ～,30 ～ ,40 ～ ,50 ～ ,60 ～ ,70 ～ ,80 ～ were 2.86%(1/35),2.11%(2/95),1.26%(3/239),3.10%(16/516),5.53% (32/579),10.07%(41/407),11.84%(27/228),10.71%(6/56) respectively. The detected rate of male (9.10%,78/857) was higher than that of female(3.85%,50/1298,χ~2 = 25.46,P < 0.01). Conclusions Huai'he River and the surrounding areas of Hong'ze lake like Xuyi,Jinhu and Hongze are identified existing endemic arsenic disease area. The prevention of arsenism should be strengthened in these areas.

BACKGROUNDSince being reclassified by WHO in 1996, solid pseudopapillary tumour (SPT) of pancreas has been recognized as the internationally accepted name. Clinicians are lacking in knowledge of this rare disease so the misdiagnosis and inappropriate therapy are hard to avoid. The clinic data on 22 patients were summarized to study the misdiagnosis and treatment of a sample of SPTs.

METHODSTwenty-two female patients with SPT were studied retrospectively and divided into two groups, the misdiagnosed group and the correctly diagnosed one. The analyses were performed with Fisher test with accurate probability for categorical data, and Kruskal-Wallis test for ranked data.

RESULTSThe rate of misdiagnosis in this sample was 45.5%. The misdiagnosed SPTs were apt to be the incomplete capsule ones (P = 0.020), which resulted in obvious difficulties during operation (P = 0.024). In the misdiagnosed SPT group, the medical expenses increased significantly (P = 0.042), and the number of days in hospital greater than in correctly diagnosed group (P = 0.041).

CONCLUSIONSAlthough SPT has low malignancy with excellent prognosis after surgical treatment in most patients, the misdiagnosis of SPT increases the social and economic burdens on patients. It is important to analyse the causes of misdiagnosis.

Adolescent ; Adult ; Carcinoma, Papillary ; diagnosis ; surgery ; Child ; Diagnostic Errors ; Female ; Humans ; Middle Aged ; Pancreatic Neoplasms ; diagnosis ; surgery