3.Studies and Applications on Mkrobial Mixed Fermentation
Microbiology 1992;0(03):-
Owing to the positive interactions between different microorganisms, mixed fermentation has been found more and more effective in practice. Apparent progress has been made on the application and mechanism of mixed fermentation in past ten years, including: (1) degradation and utilization of cellulose, bagasse, cornstalk, etc; (2) degradation of environmental pollution, like Diazinon and PVA; (3) production of specifically metabolite; (4) optimized technics of mixed fermentation. The latest progress on the application, related mechanism, microorganisms, and conditions of mixed fermentation is reviewed in this article.
4.Clinical significance of endothelin-1 and transforming growth factor-β in the newborns with respiratory distress.
Li XING ; Zhiwei HUANG ; Dongdong SUN
Clinical Medicine of China 2010;26(10):1099-1101
Objective To measure the serum levels of endothelin-1 (ET-1) and transforming growth factor-β(TGF-β) in the newborns with respiratory distress and investigate its clinical significance. Methods Newborns with respiratory distress hospitalized into the Newborn Intensive Care Unit were included. The serum levels of ET-1 and TGF-β were all detected with ELISA in the first six hours,3,7,14 and 28 days after birth. Results The highest levels of ln ( 1 + ET-1 ) and ln ( 1 + TGF-β) were obtained from newborns with diagnosis as meconium aspiration syndrome ( 1.95 ± 1.02) ng/L and ( 1.51 ±0.99) ng/L,respectively) in the samples obtained in the first six hours after birth, and these were statistically different from those of the control group ( P < 0. 05 ). Following were obtained for newborns with respiratory distress syndrome ( ( 1.52 ± 0.74 ) ng/L and ( 1.13 ± 0. 48 ) ng/L, t = 2.28,2. 13,respectively). After oxygen treatment, ET-1 levels obtained in the first six hours of life decreased gradually in the following days (P <0.05 ). Conclusions The measurements of ET-1 and TGF-β levels will help in differentiating diagnosis of the respiratory distress of newborns. The ET-1 levels will help to assess the therapy effectiveness and prognosis.
6.Molecular targeted therapy of tumor hypoxia
Shanshan LI ; Ligang XING ; Xiaorong SUN
Journal of International Oncology 2014;41(5):327-331
Hypoxia is an inherent feature of the majority of solid tumors,which can increase the resistance of tumor cells to radiotherapy and chemotherapy,promote tumor angiogenesis and lead to poor prognosis.Therefore,targeting the hypoxic tumor cells has become a spot in cancer therapy.Bioreduction drugs can be activated by a specific reduction to become cytotoxic metabolites,thus killing hypoxic tumor cells,while small molecular targeting inhibitors can selectively act on the key point of hypoxia pathway.They have paved a new way for hypoxia targeted therapy.
8.The effect of fluoride toxicity on free radical level in rats
Xing-hua, LI ; Bo, SUN ; Guang-sheng, LI
Chinese Journal of Endemiology 2001;20(2):98-99
Objective Recently,it was reported the analy sis of bone free radical by using electron spin resonance (ESR),so this article aimed to determine the changes of bone free radical in fluoresis rats.Methods To analyze the free radical level of bone in fluoresis rats fed with different dose of calcium by ESR method.Results The free radical of bone in the group of low ca lcium level and the group low calcium+fluorides was higher than that in the cont rol group (P<0.01),but that in normal animal feeds (calcium-rich)+fluoride group was lower than that in the control group.Conclusions Low doses of fluoride did not resulted in the increase of free radical in calcium-rich condition at short time,but at low calcium condition,fluoride could increase the level of free radical,these suggested that simple overdose of fluoride did not change the level of free radical of bone.
9.Clinical analysis of 40 cases of acute mercury poisoning.
Xiao-feng LI ; De-xing SUN ; Shao-min ZHANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2009;27(3):185-186
Adolescent
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Adult
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Female
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Humans
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Male
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Mercury Poisoning
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diagnosis
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therapy
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Middle Aged
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Occupational Diseases
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diagnosis
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therapy
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Retrospective Studies
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Young Adult
10.Marginal bone loss around tissue level implants in the posterior part of the mandible.
Ranran HUANG ; Xu SUN ; Zhenzhen SHANG ; Li ZHANG ; Xing LIANG
West China Journal of Stomatology 2016;34(2):145-149
OBJECTIVETo clarify the related factors of marginal bone loss (MBL) around tissue level implants in the posterior part of the mandible.
METHODSA total of 116 tissue level implants were implanted in the mandibular posterior region of 76 patients. Patients' information, including general characteristics, implant characteristics, implant site characteristics, and prosthesis characteristics, was recorded. Their cone beam computed tomography data were measured immediately after implant placement, 3 months later, and 3 and 12 months after prosthesis loading. The measurement of MBL was conducted by One Volume Viewer software. SPSS 20.0 was used for statistic analysis.
RESULTSSmoking, cortical bone thickness (CBT), collum angle (CA), and implant local sanitation showed significant differences with body mass loss (P<0.05). No significant differences were found among sex, age, length of implant, diameter of implants, implant systems, bone height, prosthesis type, and MBL (P>0.05).
CONCLUSIONThe risk factors that caused MBL were smoking, thicker CBT, larger CA, and poor implant local sanitation. Among them, poor implant local sanitation had the highest correlation with MBL.
Alveolar Bone Loss ; epidemiology ; etiology ; Cone-Beam Computed Tomography ; Dental Implants ; adverse effects ; Dental Prosthesis Design ; Dental Prosthesis, Implant-Supported ; Follow-Up Studies ; Humans ; Mandible ; Mandibular Prosthesis ; statistics & numerical data ; Oral Hygiene ; Postoperative Complications ; Smoking ; adverse effects ; Treatment Outcome