Dermatitis, Occupational ; etiology ; Humans ; Trichloroethylene ; poisoning

Qi in TCM is the most essential substance that makes up the body and maintains life activities. All vital substances in the body are transformed by constant motion and changes of qi. Qi in TCM mainly means full of functions. What is the basic material attribute of qi? We don't have a systematic study on it. Therefore, we combined the achievement of modern medicine, and explored further from the origin, functions, pathogeneses, and therapies of mitochondria and qi. Surprisingly, we found out that the origin of mitochondria was similar to that of qi. They are tiny substance constituting the human body. Secondly, the function of mitochondria is similar to that of qi. When the disorder of qi and mitochondria occurs, similar vital signs occur or the same reactions occur. These results suggested that the basic material attribute of qi might be mitochondria.
Humans ; Medicine, Chinese Traditional ; methods ; Mitochondria ; physiology ; Qi

Objective To investigate whether intraoperative hypotension was associated with postoperative delirium in older patients undergoing laparoscopic surgery with prospective cohort study.Methods Study subjects were patients,＞ 65 years of age,undergoing laparoscopic surgery,who were enrolled in an ongoing prospective observational study of the pathophysiology of postoperative delirium.Intraoperative blood pressure was measured,and predefined criteria were used to define hypotension.Delirium was measured by the Confusion Assessment Method on the first two postoperative days.Data were analyzed with t-test,two-sample proportion test,and ordered logistic regression muhivariable model,including correction for multiple comparison.Results Data from 213 patients with a mean age of 73.6 years (SD 6.1) were studied.Of these 63 (29.6％) developed delirium on day 1 and 61 (28.6％) on day 2.Relative hypotension (decreases by 20％,30％,or 40％) or absolute hypotension [mean arterial pressure (MAP) ＜ 50mmHg] were not significantly associated with postoperative delirium,nor was the duration of hypotension (MAP ＜ 50 mmHg).Conversely,intraoperative blood pressure variance was significantly associated with postoperative delirium.Conclusions These results showed that increased blood pressure fluctuation,not absolute or relative hypotension,was predictive of postoperative delirium.

Objective To provide Laser generator with a precision constant-temperature environment.Method This system was developed on the bases of PT100 sensor circuit,MCU and SSR.The inputting PT100 voltage was first amplified and deflected,and then delivered to AD650 to perform V/F.The outputting frequency was measured with high precision by T0 port of MCU C8051F020,and the micro-controller calculated the result and transmitted PID output signal by 16 bit PWM to heater.Results This precision constant-temperature water circulator was gifted with an error within ?0.05℃.Conclusion This precision constant-temperature water circulator can make an ideal temperature environment available for laser generator.

OBJECTIVETo explore the effect of Danlou Tablet (DT) on arrhythmia model rats induced by transient myocardial ischemia/reperfusion (I/R).

METHODSTotally 45 healthy Wistar rats were randomly divided into 3 groups, the sham-operation group, the model group, and the DT group, 15 in each group. Rats in the sham-operation group and the model group were administered with distilled water by gastrogavage at the daily dose of 0.1 mL/kg. Rats in the DT group was administered with 0.53 g/mL DT suspension by gastrogavage at the daily dose of 0.1 mL/kg. All medication was lasted for 10 successive days. The myocardial I/R experiment was performed at 1 h after the last gastrogavage. ECG was performed before ligation and at I/R. The jugular arterial blood pressure of all rats was measured during the whole course. ST segment changes were observed at each time point of I/R. The ventricular fibrillation, the premature ventricular, the number and the duration of ventricular tachycardia within 30 min reperfusion were also observed. Activities of Na(+)-K+ ATPase and Ca2+ ATPase in the myocardium homogenate were detected as well.

RESULTSThe jugular arterial blood pressure and the heart rate were slightly lower in the DT group than in the model group, but with no statistical difference (P > 0.05). Compared with the sham-operation group, the degree of ST segment was obviously elevated in the model group at 0, 5, and 7 min (P < 0.05). It was significantly lower in the DT group than in the model group (P < 0.01). ST seg ment was more elevated at 5 min than at 0 min in the model group, but the degree of ST segment elevation was still obviously lower in the DT group than in the model group (P < 0.05). There was no statistical difference in the degree of ST segment elevation at 7 min between the two groups (P > 0.05). At 0 min when the decrement of ST segment exceeded one half the ischemia, there was no statistical difference in the degree of myocardial ischemia between the model group and the DT group (P > 0.05). Compared with the model group, the incidence of fatal and nonfatal ventricular fibrillation, the frequency and duration of ventricular tachycardia and premature ventricular beats were obviously lessened, and activities of Na(+)-K+ ATPase and Ca(2+)-ATPase increased (all P < 0.05).

CONCLUSIONSDT could significantly protect arrhythmias induced by transient I/R. Its effect might be related to lowering the degree of myocardial ischemia, and increasing ion transport channel related enzyme activities.

Animals ; Arrhythmias, Cardiac ; drug therapy ; etiology ; Disease Models, Animal ; Drugs, Chinese Herbal ; therapeutic use ; Male ; Myocardial Reperfusion Injury ; complications ; Rats ; Rats, Wistar

Adult ; Aged ; Breast Neoplasms ; pathology ; surgery ; Female ; Follow-Up Studies ; Humans ; Lymph Node Excision ; methods ; Mastectomy, Modified Radical ; Middle Aged ; Ultrasonic Therapy ; methods ; Young Adult

Objective To assess the predictive value of neutrophil gelatinase associated protein lipocalin (uNGAL) in urine for detection of acute kidney injury(AKI) in patients with severe traumatic brain injury. Methods Patients with severe traumatic brain injury from the ICU were collected from Jan. 2011 to May. 2013 in our hospital. 43 cases that met the RIFLE criteria for diagnosis of AKI in the ICU within 7 days were selected as AKI group. Another 43 cases that were matched for age ,gender ,illness severity , surgery method with AKI cases ,selected as non‐AKI group. The levels of uNGAL and Scr were measured when the patients admit‐ted in the ICU with 15 min ,at 24 h ,48 h ,72 h. the sensitivity and specificity of uNGAL and Scr for diagnosis for AKI were evalua‐ted by ROC curve. Results The incidence of severe traumatic brain injury AKI was 42. 16% (43/102). The uNGAL levels in the AKI group were higher when the patient stayed in the ICU longer and no obvious in the non AKI group. When admitted to the ICU 24 h ,the level of uNGAL(720. 32 ± 684. 25)ng/mL in AKI group was significantly higher than that (421. 92 ± 351. 20)ng/mL in non AKI group. The difference was statistically significant (P< 0. 05). The levels of Scr between two groups were not statistically significant. The area under ROC curve of uNGAL and Scr were 0. 879 (95% CI :0. 807 - 0. 949) and 0. 612 (95% CI :0. 493 -0. 731). When the cutoff value of uNGAL was 180 ng/mL ,the sensitivity and specificity were 0. 890 and 0. 823 respectively. The sensitivity was superior to Scr. Conclusion uNGALis superior to Scr for early diagnosis of AKI in patients with severe traumatic brain injury and it could be used as a biomarker for early diagnosis of AKI.

Objective To evaluate the value of using fluorescence in situ hybridization (FISH)technique for the detection of chromosome aberration of urine exfoliated cells for the diagnosis of bladder tumor.MethodsFISH technique were used to detect the abnormalities of chromosome 3,7,17 and 9p16 site from 20 normal people, and to establish the threshold.The morning's first urinations were available from 75 patients with bladder cancer and 25 patients without urothelial tumor, then were detected using FISH technique and urine cytology respectively.The sample was considered positive if two or more probes results higher than the criteria,or one probe has two or more abnormal results.Results The sensitivity of single using were 73.3％ (55/75),76.0％ (57/75),62.7％ (47/75) and 62.7％ (47/75) for the 4 probes (3,7, 17 and 9p16)respectively.The sensitivity of combined detection was 85.3％ (64/75) and specificity was 96.0％ (24/25) The sensitivity and specificity of urine cytology examination was 9.3％ (7/75) and 100％ (25/25) .The sensitivity of FISH examination was significantly higher than that of urine cytology examination (85.3％ vs 9.3％ ,x2 = 57.00, P ＜ 0.001) .Sensitivity of FISH examination was not correlated with cancer pathologic grading(low vs high : 84.2％ vs 86.5％, x2 = 0.08, P ＞ 0.05)and clinical stage (ta-tl : 82.9％, t2-t4 :87.5％, x2 = 0.32 ,P ＞ 0.05) .ConclusionFISH technique is a non-invasive and effective method for the early diagnosis of bladder tumor and is more sensitive than urine cytology.Furthermore, FISH technique can be used to predict the tumor's biological behavivor and prognosis.

Background and purpose: Human epidermal growth factor receptor 2 (HER-2) is the member of tyrosine kinase receptor family. Its differential expression plays the key role in choosing targeted drug for breast cancer. This study focused on screening the breast cancer cell clones of different HER-2 expression levels, and studying the bi-ological characteristics of these cells. Methods: Breast cancer SK-BR-3 cells were clonally purified, and the expression level of soluble HER-2 (sHER-2) from the culture supernatant was detected by the ECLIA on ADVIA Centaur CP System. Cell clones with high expression (>50.0 ng/mL), medium expression (15.8-50.0 ng/mL) and low expression (<15.8 ng/mL) of sHER-2 were identified, respectively. This study observed the morphological changes of cell strains with differential expression levels of sHER-2 by cell culture. Besides, biological characteristics were compared by a series of experiments in vitro, such as clone formation, scratch assay, and transwell detection. Results: Compared with normal breast cells, sHER-2 was overexpressed significantly in SK-BR-3 breast cancer cells. Furthermore, the abilities of clone formation, mobility and invasion of sHER-2 high expression cell strain [(51.3±3.4)%, (50.0±0.6)% and (53.5±4.2)%] were signifi-cantly higher than those of sHER-2 medium expression [(42.0±3.7)%, (19.5±3.4)% and (33.2±3.9)%] or sHER-2 low expression [(26.7±2.9)%, (13.6±1.0)% and (28.9±5.4)%], and the differences were all statistically significant (P<0.05). Conclusion: Breast cancer cell strain with high expression level of sHER-2 can enhance cell proliferation, promote cell motility and other biological effects, which may lay the foundation for clinical screening of targeted drug therapies for breast cancer.

Objective To investigate the clinical efficacy of modified YV-plasty for refractory bladder neck contracture (BNC) caused by transurethral resection of prostate (TURP).Methods From June 2013 to March 2016,11 patients with BNCs secondary to TURP were included in this study.Their mean age was 63.7 years (range,56-73 years).All patients presented voiding difficulty and failed after 2 or more prior endoscopic treatments.Modified YV-reconstruction of bladder neck was performed,by incising the anterior wall of bladder neck in a T-shaped manner,and creating two well-vascularized and tension-free flaps,which offer the possibility to reconstruct a wide bladder neck.Results After a mean follow-up of 14.6 months (ranging 3-24 months),successful outcome was achieved in 9 patients without incontinence secondary by surgery.Recurrent voiding difficulty developed in 2 patients,which was cured after a following endoscopic treatment.Conclusion A wider bladder neck can be obtained through modified YV-reconstruction of bladder neck,while avoiding external urethral sphincter injury.It is an available option for refractory bladder neck contracture.