By the breeding model of physics mutagenests (60Co,UV light) and re-strong in the body of insects, We obtained a Bt strain Bt99985 with high insecticidal activity. The shake flask and 40t tank fermentation tests showed that, this strain showed special activity against Spodoptera exjgua, Comparing with original Bt strain: 93005, CK strain: HD-1-580 and GC-91, the value of potency increased respectively by 429%, 655% and 114% in shake flask test. Comparing with GC-91, the value of potency increased by 180% in 40t tank fermentation test.

OBJECTIVEAfter performed symptom-limited maximum cardiopulmonary exercise testing (CPET) before and after acute alkalized blood, we repeated CPET with pure oxygen.

METHODSFive volunteers, 3hr after alkalizing blood room air CPET, re-performed CPET inhaling from Douglas bag connected with pure oxygen tank. We compared with those of room air CPETs before and after alkalized blood.

RESULTSAfter alkalized blood oxygen CPET had a similar response pattern as those of CPETs before and after blood alkalization. During the CPET, all breath frequency, minute ventilation and tidal volume at each stage were similar to those of CPETs before and after alkalized blood (P > 0.05),except there was a lower peak tidal volume than those of both CPETs and a slightly higher resting minute ventilation only than CPET after alkalized blood (P > 0.05). After alkalized blood, oxygen CPET, all PaO2 and SaO2 and most Hb were lower than those of both CPETs (P < 0.05). The pHa and [HCO3-]a were higher than those of CPET before alkalized blood (P < 0.05); but were not CPET after alkalized blood (P > 0.05). PaCO2 was similar to that of CPET before alkalized blood (P > 0.05), but was lower than that of CPET after alkalized blood at resting and warm-up (P < 0.05); then was similar to both CPETs at anaerobic threshold (P > 0.05); but was higher at peak exercise higher than those of both CPETs (P < 0.01). Oxygen increased 2,3 volunteers' workload and time at AT and peak exercises.

CONCLUSIONRespiratory response pattern to oxygen CPET after alkalized blood is similar to those of both CPETs before and after alkalized blood. The CPET response is dominantly depended upon metabolic rate, but not levels of pHa, PaCO2 and PaO2.

Blood Gas Analysis ; Exercise Test ; Humans ; Oxygen ; Respiratory Physiological Phenomena

Objective To investigate the effect of Shuangbo San on promoting the recovery of gastrointestinal function of prostatic cancer patients after laparoscopic radical prostatectomy(LRP). Methods Sixty-five prostatic cancer patients after LRP were randomly divided into treatment group and control group. The treatment group (N = 33)was treated with postoperative conventional western medicine combined with acupoint application of heated Shuangbo San on Shenque(CV8), and the control group(N = 32) was treated with postoperative conventional western medicine. The treatment lasted for 7 continous days. The clinical outcomes included time for the recovery of bowel sounds, postoperative exsufflation time, postoperative defecation time, time for the relief of abdominal distension and pain, average hospitalization time and total effective rate. Results (1) Time for the recovery of bowel sounds, postoperative exsufflation time, and postoperative defecation time in the treatment group were shortened as compared with the control group, the difference being significant (P < 0.05 or P <0.01). (2) After treatment, time for the relief of abdominal distension and pain, and average hospitalization time in the treatment group were shorter, and Visual Analogue Scale (VAS) scores of abdominal distension and pain were less than those in the control group, the difference being significant(P<0.01).(3) The total effective rate of the treatment group and the control group was 93.94％, 71.88％ respectively, the difference being statistically significant (P < 0.05). Conclusion Acupoint application of heated Shuangbo San on Shenque(CV8) is effective on promoting the exsufflation and defecation of post-LRP prostatic cancer patients, relieving abdominal distension and pain, promoting the recovery of gastrointestinal function, reducing the risk of postoperative intestinal obstruction and shortening hospitalization time, and has certain advantages as compared with postoperative conventional western medicine.

Objective: Conventional open spinal surgery of adult scoliosis can be performed from anterior, posterior, or combined approach. Minimally invasive spine surgery (MISS) was developed for the purpose of reducing the undesirable effects and complications. This review aimed to make a brief summary of recent studies of the approach and clinical outcomes of MISS in adult scoliosis. Data Sources: We conducted a systematic search from PubMed, Medline, EMBASE, and other literature databases to collect reports of surgical methods and clinical outcomes of MISS in treatment of adult scoliosis. Those reports were published up to March 2017 with the following key terms: "minimally invasive," "spine," "surgery," and "scoliosis."Study Selection: The inclusion criteria of the articles were as followings: diagnosed with adult degenerative scoliosis (DS) or adult idiopathic scoliosis; underwent MISS or open surgery; with follow?up data. The articles involving patients with congenital scoliosis or unknown type were excluded and those without any follow?up data were also excluded from the study. The initial search yielded 233 articles. After title and abstract extraction, 29 English articles were selected for full?text review. Of those, 20 studies with 831 patients diagnosed with adult DS or adult idiopathic scoliosis were reviewed. Seventeen were retrospective studies, and three were prospective studies. Results: The surgical technique reported in these articles was direct or extreme lateral interbody fusion, axial lumbar interbody fusion, and transforaminal lumbar interbody fusion. Among the clinical outcomes of these studies, the operated levels was 3–7, operative time was 2.3–8.5 h. Both the Cobb angle of coronal major curve and evaluation of Oswestry Disability Index and Visual Analog Scale decreased after surgery. There were 323 complications reported in the 831 (38.9%) patients, including 150 (18.1%) motor or sensory deficits, and 111 (13.4%) implant?related complications. Conclusions: MISS can provide good radiological and self?evaluation improvement in treatment of adult scoliosis. More prospective studies will be needed before it is widely used.

A novel mucoadhesive microcapsule with drug-resin complex core loaded with berberine hydrochloride (BH) was developed and optimized. Drug-ion exchange resin (IER) complex was prepared by static method which stirring IER in drug solution at certain conditions. The influences of different IERs, different temperature, pH values and concentrations of drug solution on the drug loading were investigated. IER complex was coated by emulsion-solvent evaporation method. The coating fluid formulation was optimized using central composite design-response surface methodology, where the ratio between Carbopol 934 and IER (X1), the ratio between Eudragit and IER (X2) and the ratio between Eudragit RL and RS (X3) were taken as independent variables. Time of cumulative release 85% (Y1) and percentage of gastric retention (Y2) were taken as response variables. Drug loading achieved a high level and more drug available in the condition of IER (IRP 88), 37 degrees C, pH 5 and 1.0 mg x mL(-1) drug solution. When X1 = 0.75, X2 = 0.9, X3 = 0.6, the time of cumulative release reached 85% at 300 min, the highest percentage of gastric retention in the range of this experiment were procured.
Acrylates ; chemistry ; Animals ; Berberine ; administration & dosage ; pharmacokinetics ; Capsules ; Delayed-Action Preparations ; Drug Compounding ; methods ; Drug Delivery Systems ; Emulsions ; Gastric Mucosa ; metabolism ; Hydrogen-Ion Concentration ; Ion Exchange Resins ; chemistry ; Male ; Polymers ; chemistry ; Rats ; Rats, Sprague-Dawley ; Temperature

OBJECTIVETo study the oral normal bacteria adherence on polymethyl methyacrylate (PMMA) containing silver-supported silicate inorganic antibacterial, and the growth inhibitory concentration of silver-supported silicate inorganic antibacterial to normal oral bacteria were also investigated.

METHODSA certain volume of normal oral bacteria was inoculated on the RHI plate containing different dilution of silver-supported silicate inorganic antibacterial, then the growth of the bacteria was investigated by light microscope and biochemical methods; the oral bacteria plaque model in vitro was used to evaluate the adherence of 4 species normal oral bacteria mixture on the surface of PMMA which containing silver-supported silicate inorganic antibacterial in the proportion of 5% or 10%.

RESULTSThe growth of normal oral bacteria was inhibited effectively by silver-supported silicate inorganic antibacterial within the concentration of 8%, and the growth of Porphyromonas gingivalis and Conclida albicans were inhibited at concentration from 1.25% to 2.50%, but the PMMA containing silver-supported inorganic antibacterial could not prevent the adherence of bacteria within a period of 16 days.

CONCLUSIONSilver-supported silicate inorganic antibacterial has effectiveness on inhibiting the growth of normal oral bacteria, but could not prevent the adherence of oral normal bacteria mixture.

Anti-Bacterial Agents ; Bacteria ; Dental Plaque ; Silicates ; Silver

The Notch signaling pathway has been implicated in the regulation of cell-fate decisions such as differentiation of embryo stem cells and neural stem cells into neurons. We cultured human mesenchymal stem cells (hMSCs) in vitro and induced hMSCs to differentiate into neural cells by beta-mercaptoethanol (beta-ME), DMSO and 3-tert-butyl-4-hydroxyanisole (BHA). Immunocytochemistry was utilized to detect neuron-specific enolase (NSE) and Nissl body, and flow cytometry was used to determine cell growth phases. The expressions of signal molecules involved in the Notch pathway such as Notch1, Jagged 1 (JAG1), presenilin 1 (PS1) and hairy and enhancer of split 1(HES1) were observed by RT-PCR and immunofluorescent techniques. The results were as follows: (1) Before induction, the percentage of hMSCs at G(0)/G(1) was 58.5%, and the percentage at S+G(2)/M was 41.5%. After induction, the percentage of hMSCs at G(0)/G(1) increased to 73.1%, 76.2% and 78.1%, respectively on days 2, 4 and 6, and the percentage at S+G(2)/M decreased to 26.8%, 24.8% and 21.9%, respectively; The percentage of NSE-positive cells reached (77+/-0.35) %; Nisslos staining was positive in cytoplasm. (2) Notch1 and JAG1 were both expressed in hMSCs before and after induction, but the mRNA expressions of both Notch1 and JAG1, detected by RT-PCR, decreased obviously after induction(P<0.05). Notch1 mRNA/beta-actin was 1.157, 0.815, 0.756 and 0.570, and JAG1 mRNA/beta-actin was 0.437, 0.350, 0.314 and 0.362, respectively, on days 0, 2, 4 and 6 after induction. The Notch pathway activation participant PS1 mRNA and Notch pathway target gene HES1 mRNA also decreased apparently after induction (P<0.05), and their mRNA/beta-actin was 0.990, 0.449, 0.441, 0.454 and 0.370, 0.256, 0.266, 0.240 on days 0, 2, 4 and 6, respectively. These observations indicate that the expressions of Notch signal molecules were suppressed when hMSCs were induced to differentiate into neural cells. Based on these findings, we propose that low level of Notch signaling activation may contribute to neural cell differentiation.
Basic Helix-Loop-Helix Transcription Factors ; genetics ; Calcium-Binding Proteins ; genetics ; Cell Cycle ; Cell Differentiation ; Flow Cytometry ; Homeodomain Proteins ; genetics ; Humans ; Intercellular Signaling Peptides and Proteins ; genetics ; Jagged-1 Protein ; Membrane Proteins ; genetics ; Mesenchymal Stromal Cells ; cytology ; Neurons ; cytology ; Receptor, Notch1 ; genetics ; Receptors, Notch ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; Serrate-Jagged Proteins ; Signal Transduction ; Transcription Factor HES-1

OBJECTIVEBasis on the dynamic changes of the ventilation and arterial blood gas parameters to symptom-limited maximum cardiopulmonary exercise testing (CPET), we further investigate the effect of alkalized blood by drinking 5% NaHCO3 on ventilation during exercise.

METHODSAfter drinking 5% NaHCO3 75 ml (3.75 g) every 5 min, total dosage of 0.3 g/Kg, 5 volunteers repeated CPET. All CPET and ABG data changes were analyzed and calculated. At the same time, CPET and ABG parameters after alkalized blood were compared with those before alkalized blood (control) used paired t test.

RESULTSAfter alkalized blood, CPET response patterns of parameters of ventilation, gas exchange and arterial blood gas were very similar (P > 0.05). All minute ventilation, tidal volume, respiratory rate, oxygen uptake and carbon dioxide elimination were gradually increased from resting stage (P < 0.05-0.001), according to the increase of power loading. During CPET after alkalized blood, ABG parameters were compared with those of control: hemoglobin concentrations were lower, CaCO2 and pHa were increased at all stages (P < 0.05). The PaCO2 increased trend was clear, however only significantly at warm-up from 42 to 45 mmHg (P < 0.05). Compared with those of control, only the minute ventilation was decreased from 13 to 11 L/min at resting (P < 0.05).

CONCLUSIONEven with higher mean CaCO2, PaCO2 and pHa, lower Hba and [H+]a, the CPET response patterns of ventilatory parameters after alkalized blood were similar.

Blood Gas Analysis ; Carbon Dioxide ; Exercise Test ; Humans ; Oxygen ; Oxygen Consumption ; Respiration ; Respiratory Physiological Phenomena ; Tidal Volume

OBJECTIVEUnder the guidance of the holistic integrative physiology medicine, we reanalyzed the data during symptom-limited maximum cardiopulmonary exercise testing (CPET) in order to investigate control and regulatory mechanism of breathing.

METHODSThis study investigated 5 normal volunteers who accepted artery catheter, performed CPET room air. Continuous measured pulmonary ventilation parameters and per minute arterial blood gas (ABG) analysis sample parameters during exercise. All CPET and ABG data changes were standard analyzed and calculated.

RESULTSWith gradually increasing power, minute oxygen uptake(every breath oxygen uptake x respiratory rate = O2 paulse x heart rate) and minute ventilation (tidal volume x respiratory rate) showed nearly linear progressive increase during the CPET(compared with the rest stage, P < 0.05 - 0.001); Minute ventilation increased even more significant after the anaerobic threshold (AT) and respiratory compensation point. PaO2 was increased at recovery 2 minutes (P < 0.05); PaCO2 was decreased after anaerobic threshold 2 minutes (P < 0.05); [H+]a was increased from AT (P < 0.05), and rapidly raised at last 2 minutes, remained high at recovery. Lactate was increased rapidly from AT (compared with resting, P < 0.05); bicarbonate decreased rapidly from AT (compared with resting, P < 0.05) and it's changed direction was contrary to lactic acid.

CONCLUSIONIn order to overcome the resistance of the power during exercise, metabolic rate othe body increased, respiratory change depend upon the change metabolism, and the accumulation of acidic products exacerbated respiratory reactions at high intensity exercise.

Anaerobic Threshold ; Blood Gas Analysis ; Exercise Test ; Healthy Volunteers ; Heart Rate ; Humans ; Oxygen ; Oxygen Consumption ; Pulmonary Ventilation ; Respiration ; Respiratory Physiological Phenomena ; Tidal Volume

OBJECTIVEFor heart functional parameters, we commonly used normal range. The reference values and predict formulas of heart functional parameters and their relationships with individual characteristics are still lack.

METHODSLeft ventricular (LV) volumes (end-diastolic volume and end-systolic volume), stroke volume (SV), ejection fraction (EF) and cardiac output (CO) were measured by cardiac CT angiography (CAT) in 1 200 healthy Caucasian volunteers, men 807 and women 393, and age 20-90yr. The results are analyzed by high-accuracy three-dimensional imaging technology, and then measured the dynamic changes of the volumes of each atriam and ventricule during their contractions and relaxations. The gender, age, height and weight were analyzed by multiple linear regression to predict LV functional parameters.

RESULTSExcept the LVEF was lower in man than in women (P < 0.001), all other LV functional parameters of EDV, ESV, SV, FE and CO were higher in man (P < 0.001). Multiple linear regression indicated that age, gender, height and weight are all independent factors of EDV, ESV and SV (P < 0.001). CO could be significantly predicted by age, gender and weight (P < 0.001), but not height (P > 0.05). The predict equation for CO (L x min(-1)) = 6.963+0.446 (Male) -0.037 x age (yr) +0.013 x weight (kg).

CONCLUSIONAge, gender, height and weight are predictors of heart functions. The reference values and predict equations are important for noninvasive and accurate evaluation of cardiovascular disease and individualized treatment.

Adult ; Age Factors ; Aged ; Aged, 80 and over ; Body Height ; Body Weight ; Cardiac Output ; Female ; Heart ; physiology ; Humans ; Male ; Middle Aged ; Reference Values ; Sex Factors ; Stroke Volume ; Ventricular Function, Left ; Young Adult