Objective To assess the value of thinprep liquid based cytology test (TCT) and Besthesda system (TBS) in diagnosis of cervial lesions. Methods 11000 cases of cervical lesions were detected with TCT and TBS.The samples of atypical squamous cells(ASC) and more severe than ASC lesions were classified into postive cytology,and then cytological results were compared with pathological examination results of cervical biopsies.Results The satisfactory rate of TCT samples was 96.36%, and the postive rate of abnormal epithelial cells diagnosed by TCT was 10.96%(1206/11000). Among 1206 cases, 15 cases(0.14%) of CA, 89 cases (0.81%) of HSIL, 449 cases (4.08%) of LSIL, 73 cases (0.66%) of ASC-H and 580 cases (5.27%) of ASC-US and AGUS. 1128 cases with postive cytologic results received pathological examination. The pathological positive rate of CA, HSIL, LSIL, ASC-H, and ASC-US and AGUS were 100%, 100%, 67.12%, 54.17% and 14.09%, respectively. The coincident rate of two examination methods was 100% for CA, 91.1% for HSIL,57.82% for LSIL and 27.78% for ASC-H. Conclusion TCT and TBS can accurately detect cervical cancer, precancerous lesions and infection of bacteria, virus and other pathogens, and at present is a means of screening cervical cancer.

Objective To investigate retina structure and function under the condition of acute continuous hypoxia at high altitude and study on the protective effects of taurine on retina injury. Methods Low-pressure chamber was used to simulate 4 500 m and 5 500 m altitude.A total of 126 SD rats were used in this study,half assigned to the conditions under plain,4 500 m and 5 500 m,the other half before the same assignment fed with 2.4% taurine in plain for a week.At 2,6,12,24,48,72 h after entering the chamber,the eyes of SD rats were taken out,fixed and sectioned.Retina layer structure and ultrastructure of retina M?ller cells were observed by light microscope and transmission electron microscope.The activity of succinate dehydrogenase(SDH) and lactate dehydrogenase(LDH) were detected with enzymohistochemistry.Results INL,IPL and GCL were injured in low oxygen.In the early period,migrating IPL cells increased(P

Objective To observe hematoxylin's cytocidal and apoptosis-inducing effects on human urinary cancer cell-T24,and its cytocidal mechanism to the target cell.Methods Target cells were incubated in the medium 1640 for 24h,which contained hematoxylin in dosage of zero(blank),12.5,25,50,100,200μg/ml,respectively;under inverted microscopy to observe target cells'morphologic change,and then harvest them;by trypan blue tmpochrome method to determine hematoxylin's cytocidal activity to the target cells;by flow cytomelry to detect the effects of hematoxylin in its different levels on target cells'apoptosis.Results The control group(without hematoxylin)showed their target cells in a fusiform adherent growth,plump,close-arranged,and with a good transparence.With the addition and increment of hematoxylin,target cells turned round,not adherent,pyknotic,with a bad transparence,as well as chromatin condensation,the cells clumped.Cell death rate of control group was(2.63±0.29)%,with the increased dosage of hematoxylin the cell death rate of test groups was(10.00±4.82)%,(21.88±3.42)%,(76.41±4.82)%,(92.27±6.54)%,and(96.34±8.70)%respectively.Flow cytometry showed cell apoptosis rate in control group was 0.47%(occurred spontaneously),but hematoxylin in dose of 50μg/ml made the apoptosis rate increased markedly,to 43.1 8%,dead cell rate 48.47%,and survival cell rate 8.35%.With the increased hematoxylin dose,cell apoptosis rate decreased gradually,while dead cell rate increased.Conclusion Hematoxylin can inhibit the target cell by two routes:to induce apoptose or kill it.In a lower dose it is able to induce target cell to apeptose;hematoxylin in a dose over 100μg/ml can directly kill the target cell.Making this trial for checking the cell's morphologic changes benefits determining the optimal dosage level and optimal acting duration for the apoptosis induction.

Objective To investigate the correlation of pathology factors and prognosis of gastrointestinal stroma tumors (GIST). Methods The expression of CD117, CD34, SMA, S-100 and Ki-67 in 91 GIST cases were studied by Envision method of immunohistocbemistory;Sequently, the relationship of the location, the size, the hemorrhage, cellular necrosis, stroma mucus, the mitosis, Ki-67 expression and the prognosis were analyzed by SPSS 12.0. Results The positive rate of CD117, CD34, SMA, S-100 were 80.21%, 73.63 %, 34.07 %, 7.69 % respectively. There had significant difference between the location, the mitosis, Ki-67 expression and the prognosis; but no significant difference between the location, the hemorrhage, cellular necrosis, stroma mucus, CD117 expression and the prognosis. Conclusion The tumor's size, mitosis, and Ki-67 expression are associated with prognosis; CD117 expression and prognosis. Even more, Ki-67 expression may be a more precise factor to judge the tumor's biological behaviour compared to the mitosis. As a wally classified method, the Flecther classification is worth to spread.

Objective To summarize the clinical experience of laparoscopic appendectomy(LA).MethodsA retrospective analysis was conducted on the clinical data of 683 patients with appendicitis treated by LA,including 258 cases of chronic appendicitis,425 cases of acute appendicitis(87 cases of complicated appendicitis).ResultsThe procedure was completed in all the patients without conversion to open surgery.The operation time was 30 min in average(15-150 min).The average hospital stay was 4d (2-15d).Postoperative complications included 26 cases of incision infection,3 cases of abdominal abscess,1 case of appendical mesenterium hemorrhage,1 case of small intestine fistula and 1 case of appendical stump fistula.The patients were followed up for 2 to 12 months with a mean of 6 months,during which no intestinal adhesive obstruction occurred.Conclusion LA is safe and effective for appendicitis,with advantages of minimal trauma,lighter pain,quicker recovery,shoter hospital stay,less complications and so on.For complicated appendicitis,the abundant surgical experience and proficient endoscopic technique are indispensable to reduce the occurrence of complications effectively.

ObjectiveTo investigate the prevalence and the characteristics of heart failure (HF) in medical intensive care unit (ICU) so as to explore the factors contributing to HF.Methods A retrospective analysis of the data of HF was carried out in 887 HF patients (54. 2％ ) males; age (69.83± 13.57) years oldadmitted to the medical ICU from October 2006 through June 2010. Clinical variables were systematically reviewed for all enrolled patients. HF as either major or additional diagnosis was recorded and the potential risk factors for HF were explored. Left ventricular systolic function was evaluated in HF patients by using ejection fraction (EF) measured by echocardiography. Multivariate Logistic regression analysis was used to identify the independent factors contributing to HF in medical ICU patients. Results Of the 887 patients, 74. 1％ aged 65 years or over, and 53％ had organ dysfunction. The prevalence of HF in medical ICU patients was 22. 8％. Echocardiography measurement revealed that left ventricular systolic function was preserved in 62. 5％ of HF patients with an EF ＞ 50％. Underlying heart diseases were identified in 72. 8％ of the HF patients, and coronary artery disease accounted for the vast majority (52. 5％ ), followed by valvular heart disease ( 17. 8％ ). Structural heart diseases were not identified in 27. 2％ of the HF patients. 4) After the adjustment of age and gender, multivariate regression analysis showed that coronary artery disease ( OR =7. 364, 95％ CI: 4. 979 ～ 10. 890, P ＜0. 01 ), valvular heart disease ( OR =18. 023, 95％ CI: 9. 280 ～ 35. 002, P ＜ 0. 01 ), diabetes mellitus ( OR =2. 154, 95％ CI: 1. 227 ～ 3. 784, P =0. 0076), respiratory failure ( ( OR =1. 527, 95％ CI: 1. 045 ～ 2. 229, P =0. 0285 ), and renal dysfunction ( OR =2. 638, 95％ CI: 1. 621 ～ 4. 294, P =0. 0001 ) were associated with risk increased for HF in medical ICU. ConclusionsHF is highly prevalent in medical ICU and its etiology is multi-factorial. The high rate of HF with preserved EF highlights the importance of enhanced alertness for HF with preserved systolic function in ICU.

Abstract: Objective To investigate the clinical distribution characteristics, drug resistance trends and the carrying of antiseptic resistance gene of Pseudomonas aeruginosa infection in children in Suzhou, in order to provide theoretical basis for the prevention and treatment of Pseudomonas aeruginosa infection in children. Methods The clinical distribution characteristics and drug resistance trends of Pseudomonas aeruginosa isolated from Children's Hospital of Soochow University from 2016 to 2021 were retrospectively analyzed. Forthermore, 101 strains of Pseudomonas aeruginosa were randomly selected to detect the expression of 9 antiseptic resistance genes (qacEΔ1-sul1, qacE, qacEΔ1, qacG, sugE(p), sugE©, emrE, ydgE, ydgF) by polymerase chain reaction. Results Pseudomonas aeruginosa in Soochow University Children's Hospital was mainly isolated from respiratory specimen (47.83%), pus (28.60%) and urine (11.72%); the main departments were intensive care unit(21.45%), general surgery department (15.71%) and respiratory department (12.31%). Patients were mainly aged from 1 month to 1 year old and older than 6 years old (34.31% and 25.38%). The top three drug resistance rates of Pseudomonas aeruginosa were imipenem (11.25%), aztreonam (9.26%) and meropenem (8.02%). Among the 853 strains of Pseudomonas aeruginosa, the drug-resistant strains were mainly from the intensive care unit (58/183), hematology department (33/91), neonatology department (31/96), and there were 57 strains of multi-drug-resistant strains with the detection rate of 6.68%. There were 98 strains (11.49%) of Carbapenem resistant Pseudomonas aeruginosa, and the annual detection rates were 22.06%, 8.40%, 3.60%, 5.67%, 9.85% and 17.20%, respectively. Among the 9 antiseptic resistance genes, the carrying rate of ydgF, sugE© and qacE was 98.02%, 94.06% and 0 respectively. Conclusion Pseudomonas aeruginosa has high resistance to some drugs, so attention should be paid to rational drug use. The carriage rates of of two antiseptic resistance genes exceeded 90%, indicating the need to strengthen research on the mechanism of antiseptic resistance research and rational use of disinfectants

BACKGROUND: Histamine, released from mast cells in atheromatous plaque, has been known to cause cardiac ischemia or sudden cardiac death in atherosclerosis patient. Previous reports have suggested that histamine induced coronary vasoconstriction was due to increase in IP(3) and DAG, which induce release of Ca2+ from SR and increase the Ca2+ sensitivity of contractile element via activation of PKC. Recently, it was reported that application of histamine cause depolarization of intestinal smooth muscle, which may contribute to histamine-induced contraction via augmenting Ca2+ influx through activation of Ca2+ channels. However, the underyling mechanism of histamine-induced depolarization and its contribution to the magnitude of coronary vasoconstriction are still uncertain. METHOD: To elucidate the underlying mechanism of Ca2+ influx change during histamine-induced vasoconstriction, we examined the effect of Ca2+ channel antagonist and PKC blocker on histamine-induced contractions, and then measured the effect of PKC antagonist on whole cell K+ current using patch clamping method in rabbit coronary smooth muscle cells. RESULTS: Application of histamine induced phasic and tonic constraction of coronary rings via activation of H(1) receptors. Pretreatment of Ca2+ channel antagonist (nifedipine, 1 microM) or PKC blockers (10 nM staurosporine and 10 microM Go6976) markedly inhibited histamine-induced tonic contraction, which suggest that the magnitude of tonic contraction depend on the Ca2+ influx. Application of 4-AP, a blocker of voltage-dependent K+ channels, increased resting tone of coronary rings, and combined treatment of nifedipine blocked this 4-AP induced increase of resting tone. Application of active analoge of DAG (1,2-DiC(8)) significantly inhibited the activity of voltage-dependent K+ current in single smooth muscle cell, meanwhile the inactive analogue of DAG (1,3-DiC(8)) has no apparent effect on the activity of voltage-dependent K+ current. Furthermore, pretreatment of calphostin C (1 microM), a blocker of PKC, diminished the 1,2-DiC(8)-induced inhibition of K+ current. CONCLUSION: PKC dependent inhibition of voltage-dependent K+ current may be responsible for the maintaining of histamine-induced tonic contraction in rabbit coronary artery.
Atherosclerosis ; Constriction ; Coronary Vessels* ; Death, Sudden, Cardiac ; Histamine ; Humans ; Ischemia ; Mast Cells ; Muscle, Smooth ; Myocytes, Smooth Muscle ; Nifedipine ; Protein Kinase C ; Staurosporine ; Vasoconstriction

Objective To evaluate the relationship between endoscopic rectal aberrant crypt foci (ACF) and colon neoplasm, including lesions with high risk of aggressive progression (adenoma with diameter ≥ 1cm, villus adenoma, tubular-villus adenoma, adenoma of high grade dysplasia, or cancer). Methods The rectum of 212 patients who underwent colonoscopy was stained by 0. 4% indigo armine, and the patient was classified into different grade according to the number of rectal ACF, namely Grade 0 as no ACF, Grade Ⅰ as 1-4, Grade Ⅱ as 5-9 and Grade Ⅲ as more than 10. The correlation between rectal ACF grade and colon lesions was analyzed. Results Of 212 patients, 72 were classified as Grade 0, 48 as Grade Ⅰ , 41 as Grade Ⅱ, and 51 as Grade Ⅲ. The detection rate of colon neoplasm and lesions with high risk of aggressive progression in patients with rectal ACF were significantly higher than that in patients without rectal ACF (OR at 95% CI was 22. 352 (6. 716 -74. 395) and 7. 982 ( 1. 838-34. 672), respcetively). Conclusion Rectal ACF may predict the detection of colon lesions, including those with high risk of aggressive progression.

Objecfive Most prostate cancer contains two or more widely separate turnors.To study the origin of prostate cancer based on the analysis of microsatellite alteration in separate tumors from the same prostate.Methods A polymerase chain reaction (PCR) was used to examine the allelic loss pattern of 4 microsatellite polymorphic markers on chromosome 8p (D8S133,D8S136,D8S137) and 17q (D17S855) in multifocal tumors of prostate from 19 patients.DNA samples were obtained from different regions of distinctly separate tumors on single case using microdissection technique.Results The overall frequence of LOH at D8S133,D8S136,D8S137 and D17S855 for all informative cases was 74%,38%,86% and 46%respectively in 40 separate tumors of prostate from 19 patients.The pattern of allelic loss was not identical in 15 of 18 (83%) informative cases. It showed that the different regions of prostate cancer were independent origin respectively.Discordant pattern of histology was observe in distantly separate regions.whereas the same allele was consistently lost in samples from different regions of the same tumor in 3 cases. Condusion Current data supports independent origin of multiple tumors in most prostate cancer patients.