26 results on '"Qing-Hong Li"'
Search Results
2. Outbreak of the South American tomato leafminer, Tuta absoluta, in the Chinese mainland: geographic and potential host range expansion
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Jun Wang, Xi Rao, Wen-jia Yang, Wan-Xue Liu, Yu-sheng Wang, Hui Liu, Fu Wenjun, Ma Deying, Rong Zhang, Xiao-qing Xian, You-hua Gao, Qing-hong Li, Meng Kuang, Ai-mei Dai, Zhang Yibo, Gui-fen Zhang, Ying Gao, Fang-Hao Wan, and Xiao-dong Feng
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Integrated pest management ,Mainland China ,Veterinary medicine ,China ,Population ,Moths ,Invasive species ,Host Specificity ,Disease Outbreaks ,Crop ,Solanum lycopersicum ,parasitic diseases ,Animals ,education ,education.field_of_study ,biology ,food and beverages ,Outbreak ,General Medicine ,South America ,biology.organism_classification ,Insect Science ,Larva ,Tuta absoluta ,Agronomy and Crop Science - Abstract
BACKGROUND In 2017 Tuta absoluta was identified as an invasive species in China. Due to its rapid geographic expansion and the severe crop damage it causes, T. absoluta poses a serious threat to China's tomato production industry. To determine its geographic distribution and host range, intensive surveys and routine monitoring were conducted across the Chinese mainland between 2018 and 2019. The population colonization coefficient (PCC; ratio of colonized sites and prefectures) and population occurrence index (POI; ratio of infested host species and PCCs) were calculated. RESULTS In northwestern China, T. absoluta populations established in Xinjiang exhibited a medium PCC value (~0.03). In southwestern China, populations in Yunnan and its five neighboring provinces exhibited high (~0.50 in Yunnan and Guizhou), or low (
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- 2021
3. Magnetic compression anastomosis for rectal atresia following necrotizing enterocolitis
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Peng-Fei Zhang, Anpeng Zhang, Shiqi Liu, Qing-Hong Li, Yi Lv, Ruixue Luo, Jingru Zhao, Jin-Zhen Guo, and Qi-Feng Li
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medicine.medical_specialty ,rectal atresia ,Intestinal Atresia ,Anastomosis ,Diagnosis, Differential ,03 medical and health sciences ,Ileocecal valve ,magnamosis ,0302 clinical medicine ,children ,Biliary atresia ,Enterocolitis, Necrotizing ,magnetic compression anastomosis ,Medicine ,Fecal incontinence ,Humans ,030212 general & internal medicine ,Clinical Case Report ,Enterocolitis ,necrotizing enterocolitis ,business.industry ,Anastomosis, Surgical ,Infant, Newborn ,Rectum ,General Medicine ,Infant, Low Birth Weight ,medicine.disease ,Rectal atresia ,Surgery ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Atresia ,Necrotizing enterocolitis ,Magnets ,Female ,medicine.symptom ,business ,Infant, Premature ,Research Article - Abstract
Rationale: Rectal atresia caused by necrotizing enterocolitis (NEC) is a serious and rare complication in children. Magnetic compression anastomosis (MCA) has been effectively applied in children with congenital oesophageal atresia and biliary atresia. Herein, we reported a case of successfully application of MCA in an infant with rectal atresia following NEC. Patient concerns: A 30+6 weeks premature birth female fetal infant was transferred to our neonatal intensive care unit due to premature delivery, low birth weight, and neonatal respiratory distress. On postpartum day 11, the infant developed abdominal distension and mucosanguineous feces. This infant was then clinically diagnosed as NEC. She underwent anesthesia and intestinal fistula operation on postpartum day 11 because of NEC. Diagnosis: After 3 months, radiographic examination revealed rectal atresia and stricture. Interventions: This infant was successfully treated with MCA following a cecum-rectal anastomosis and ileocecal valve was reserved. Outcomes: On postoperative day 9, she passed the 2 magnets per rectum. In addition, there were no difficult defecation or fecal incontinence or other short-term complications. After the 7-month follow-up, the patient had an excellent clinical outcome. Lessons: MCA is a feasible and effective method for treating rectal atresia in infants.
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- 2020
4. Magnetic compression for anastomosis in treating an infant born with long-gap oesophageal atresia
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Jin-Zhen Guo, Yi Lv, Ruo-Gu Luo, Qing-Hong Li, Shiqi Liu, Ruixue Luo, Yi-Mei Li, Ming-Xing Han, Jingru Zhao, Peng-Fei Zhang, Ying Fang, and Jing Zhang
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Polyhydramnios ,medicine.medical_specialty ,business.industry ,Tracheoesophageal fistula ,General Medicine ,Anastomosis ,medicine.disease ,Dysphagia ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Parenteral nutrition ,030220 oncology & carcinogenesis ,Atresia ,medicine ,Gestation ,030212 general & internal medicine ,Esophagus ,medicine.symptom ,business - Abstract
Rationale Neonatal long-gap esophageal atresia (LGEA) with tracheoesophageal fistula (TEF) is an uncommon but serious congenital malformation of the esophagus in newborns, and it remains challenging for pediatric surgeons. Magnetic compress has been shown to be effective for the treatment of LGEA in children and adults. However, the implementation of this unique technique for neonatal LGEA has not been evaluated. Patient concerns A female infant was born at 37 weeks of gestation. Prenatal ultrasound imaging revealed signs of esophageal atresia, including the absence of the gastric bubble and polyhydramnios. Diagnoses A diagnosis of LGEA with TEF was confirmed at birth by contrast X-ray. Interventions She was treated with magnetic compression anastomosis (MCA) following an esophago-esophagostomy. Two magnetic rings were customized, and the MCA was conducted during the same stage surgery of ligating the TEF. Under the magnetic force, the 2 magnet rings pulled along the gastric tube to achieve anastomosis. The postoperative permanent suction of these 2 pouches was instituted, and spontaneous growth was awaited. Magnet removal was performed at 36 days, and enteral nutrition was continued via a gastric tube for 4 weeks at post-operation. Outcomes The upper gastrointestinal contrast confirmed the anastomotic patency perfectly after 3 months. The patient was followed up for 18 months, and exhibited durable esophageal patency without dysphagia. Lessons These results suggest that MCA is feasible and effective for treating LGEA in infants.
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- 2020
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5. Phase-Focusing Model of Freak Wave Based on Boussinesq Equation
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Xiang-jun Yu, Hua Wang, and Qing-hong Li
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Physics ,Mathematical analysis ,Phase (waves) ,Rogue wave - Published
- 2019
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6. Diagnosis of the Inhomogeneous Evaporation Duct and Its Effects on the Electromagnetic Wave Propagation of the Radar
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Lin, Jiao, primary, Qing-hong, Li, additional, and Yong-gang, Zhang, additional
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- 2019
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7. Cluster Analysis of Deep Water Sound Speed Profiles in Indian Ocean
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Hua Wang, Qing-hong Li, Xiang-jun Yu, and Yunbo Li
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Indian ocean ,Oceanography ,Speed of sound ,Cluster (physics) ,Geology ,Deep water - Abstract
Sound speed profiles in the ocean have a significant impact on the acoustic propagation, thus affecting the sonar detection performance. Sound speed profiles have characteristics of positional and seasonal distribution. In order to guide the sonar detection, use WOA13 dataset, calculate the number of categories of sound speed profiles by hierarchical clustering method, classify sound speed profiles categories and typical sound speed profile structure of various categories in different seasons by fuzzy c-means clustering. It is concluded that there are 7 categories of sound speed profiles in Indian ocean: Antarctic Water category, Antarctic Transition Water category, Sub-Antarctic Transition Water category, Sub-Antarctic Water category, Sub-Tropical Water category, Tropical Divergence Zone category and North Indian Ocean Water category. The distribution area of these categories are generally zonal distribution. Sub-Tropical Water category, Tropical Divergence Zone category and North Indian Ocean Water category have significant seasonal variations. The seasonal variation of other categories are not significant.
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- 2019
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8. Combination-Focusing Model of Freak Wave Based on Boussinesq Equation
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Qing-hong Li, Xiang-jun Yu, and Hua Wang
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Physics ,Mathematical analysis ,Rogue wave - Abstract
Freak wave is a kind of instantaneous disastrous wave with large wave height, which has great destructive effect on the navigation of ships at sea. Based on the layered Boussinesq equation, a wave model for focusing simulation of freak wave is established, and the numerical generation of freak wave is realized. Through the calculation results, the evolution process and the non-linear characteristic parameters of the freak wave are analyzed and discussed. The following conclusions are drawn: The influence of different energy distribution modes on the simulation of the freak wave is analyzed. Focusing model of simulated freak wave based on layered Boussinesq equation can reproduce freak wave events on random wave field when energy input of freak wave train reaches 10%. The simulation efficiency is high, the influence on skewness is small, and the influence on kurtosis is large.
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- 2019
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9. Magnetic compression anastomosis for rectal atresia following necrotizing enterocolitis: A case report.
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Shi-Qi Liu, Qi-Feng Li, Yi Lv, Jing-Ru Zhao, Rui-Xue Luo, Peng-Fei Zhang, Jin-Zhen Guo, An-Peng Zhang, Qing-Hong Li, Liu, Shi-Qi, Li, Qi-Feng, Lv, Yi, Zhao, Jing-Ru, Luo, Rui-Xue, Zhang, Peng-Fei, Guo, Jin-Zhen, Zhang, An-Peng, and Li, Qing-Hong
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- 2020
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10. Magnetic compression for anastomosis in treating an infant born with long-gap oesophageal atresia: A case report.
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Shi-Qi Liu, Yi Lv, Ying Fang, Rui-Xue Luo, Jing-Ru Zhao, Ruo-Gu Luo, Yi-Mei Li, Jing Zhang, Peng-Fei Zhang, Jin-Zhen Guo, Qing-Hong Li, Ming-Xing Han, Liu, Shi-Qi, Lv, Yi, Fang, Ying, Luo, Rui-Xue, Zhao, Jing-Ru, Luo, Ruo-Gu, Li, Yi-Mei, and Zhang, Jing
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- 2020
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11. Photocatalytic Degradation of the Tributyltin by Titanium Dioxide Photocatalysts
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Na Guo, Qing Hong Li, Xiang Sun, Li Hua Dong, Li Zhang, and Xi Qin Zhang
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Materials science ,Waste management ,Photocatalytic decomposition ,Photodissociation ,chemistry.chemical_element ,General Medicine ,engineering.material ,chemistry.chemical_compound ,Reaction rate constant ,chemistry ,Coating ,Chemical engineering ,Titanium dioxide ,Tributyltin ,engineering ,Tin ,Photocatalytic degradation - Abstract
Tributyltin (TBT) in water was photocatalytically decomposed in the presence of TiO2 film photo-catalyst, which was prepared by coating TiO2 on the industry pure titanium foil. The photocatalytic decomposition rate of TBT is up to 93.8% within 30 min. Photocatalytic decomposition of TBT was greatly enhanced with rate constant nearly 3 times as that by photolysis. TBT decomposed in a stepwise manner, and the main products were monobutyltin (MBT), which is further decomposed to inorganic tin in the system.
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- 2013
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12. Effect of perennial drought environments on Citrus tangerina Hort. cv. 'Chuanju' growth, nutrient absorption and physiology
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Qing-Hong Li, Wei-Guo Fan, and Su-Fang Wu
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Citrus tangerina ,Ecology ,Agronomy ,Perennial plant ,Nutrient absorption ,Soil Science ,Plant Science ,Biology ,Agronomy and Crop Science ,Ecology, Evolution, Behavior and Systematics - Published
- 2013
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13. Aerobic Oxidation of p-Toluic Acid to Terephthalic Acid over T(p-Cl)PPMnCl/Co(OAc)2 Under Moderate Conditions
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X. Y. Zhang, Weiping Luo, Can-Cheng Guo, Yang Xiao, Qing-Hong Li, Qian Liu, and Guo-Fang Jiang
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Terephthalic acid ,biology ,Inorganic chemistry ,chemistry.chemical_element ,General Chemistry ,Manganese ,biology.organism_classification ,Redox ,Catalysis ,p-Toluic acid ,chemistry.chemical_compound ,chemistry ,Tetra ,Cobalt ,Organometallic chemistry ,Nuclear chemistry - Abstract
The aerobic oxidation of p-toluic acid to terephthalic acid over tetra(p-chlorophenylporphinato)manganese (T(p-Cl)PPMnCl)/cobalt acetate was reported for the first time. The co-catalysis of T(p-Cl)PPMnCl/Co(OAc)2 was also studied. The studies indicated that the PTA oxidation was influenced by the catalyst composition, catalyst concentrations and reaction conditions. A preliminary mechanism of this co-catalyzed oxidation reaction was proposed based on experimental observations. The aerobic oxidation of PTA to TPA over T(p-Cl)PPMnCl/Co(OAc)2 was reported for the first time, and the co-catalysis of T(p-Cl)PPMnCl/Co(OAc)2 for aerobic oxidation of PTA to TPA was also studied. A preliminary mechanism for the PTA oxidation over T(p-Cl)PPMnCl/Co(OAc)2 was proposed based on the experiment results.
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- 2009
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14. A new one-pot synthesis of μ-oxo dimeric iron(III) porphyrins from meso-tetraarylporphyrins
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Qing-Hong Li, Qiang Liu, Yan-Zhi Gong, Can-Cheng Guo, and Changjun Gong
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One-pot synthesis ,Inorganic chemistry ,General Chemistry ,Reaction intermediate ,Porphyrin ,Chloride ,High-performance liquid chromatography ,Ferrous ,chemistry.chemical_compound ,chemistry ,Yield (chemistry) ,Polymer chemistry ,medicine ,medicine.drug - Abstract
A new synthesis of μ-oxo dimeric iron(III) porphyrins from meso-tetraarylporphyrins in one-pot procedure is reported. μ-oxo dimeric iron(III) porphyrin was obtained in high yield (up to 93%) from the reaction of meso-tetraarylporphyrin with ferrous chloride in DMF at pH 8–11. Compared with other synthetic methods of μ-oxo dimeric iron(III) porphyrin from meso-tetraarylporphyrins, the one-pot procedure has higher yields of μ-oxo dimeric iron(III) porphyrins and is a simpler and more convenient procedure. In order to evaluate the range of applicability of this method, μ-oxo dimeric iron(III) porphyrins with different substituents were prepared by the reaction of the corresponding meso-tetraarylporphyrins with ferrous chloride. The results showed that it was possible to apply this one-pot procedure to the synthesis of other μ-oxo dimeric iron porphyrins in excellent yields. A mechanism for the formation of μ-oxo dimeric iron porphyrins was proposed based on the reaction intermediates characterized by HPLC and UV-vis methods.
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- 2009
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15. Aerobic oxidation of p-xylene over metalloporphyrin and cobalt acetate: Their synergy and mechanism
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Can-Cheng Guo, Yang Xiao, Ze Tan, Quan Jiang, and Qing-Hong Li
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Terephthalic acid ,Process Chemistry and Technology ,Xylene ,Inorganic chemistry ,Medicinal chemistry ,p-Xylene ,Peroxide ,Catalysis ,chemistry.chemical_compound ,Cobalt acetate ,Transition metal ,chemistry ,Yield (chemistry) ,Physical and Theoretical Chemistry - Abstract
The aerobic liquid-phase oxidation of p -xylene (PX) over metalloporphyrin and Co(OAc) 2 was studied, and the co-catalysis between metalloporphyrin and Co(OAc) 2 for the oxidation of PX was discovered for the first time. The results showed that both the PX conversion and terephthalic acid yield could be increased significantly despite the fact that only a minute amount of metalloporphyrin was added to the reaction mixture in addition to the Co(OAc) 2 catalyst. The effects of the structure of metalloporphyrin and reaction conditions such as temperature, air pressure and catalyst concentration on the overall reaction performance were also studied. A possible mechanism for the observed synergy between metalloporphyrin and Co(OAc) 2 as co-catalysts for the aerobic liquid-phase oxidation of PX was proposed based on some experimental observations. The results suggested that the PX oxidation was improved because of the acceleration of the chain initiation of PX oxidation by metalloporphyrin, and the acceleration of the chain initiation itself was due to the ease of peroxide formation over metalloporphyrin.
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- 2008
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16. Aerobic liquid-phase oxidation of p-xylene over metalloporphyrins
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Qing-Hong Li, Can-Cheng Guo, Quan Jiang, Hai-Yang Hu, Qiang Liu, and Jian-Xin Song
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chemistry.chemical_classification ,Terephthalic acid ,Inorganic chemistry ,chemistry.chemical_element ,General Chemistry ,Manganese ,Aldehyde ,p-Xylene ,Product distribution ,Catalysis ,Solvent ,chemistry.chemical_compound ,Acetic acid ,chemistry - Abstract
The five metalloporphyrins ( T (p- Cl ) PPM , M = Fe , Mn , Co , Cu , Zn ) with different metal nuclei were synthesized, and their catalytic aerobic liquid-phase oxidations of p-xylene into p-toluic acid, p-toluic aldehyde and terephthalic acid using a low concentration of acetic acid as solvent without any halide additives, were studied. The p-xylene conversions and the oxidation product distributions were found to be affected by the structures and concentration of the metalloporphyrins as well as the reaction parameters such as time, temperature and air pressure. The formation of some intermediate oxidation products in the oxidation process also influenced the reaction conversions and the product distribution. Among the metalloporphyrins used, tetrakis(p-chlorophenylporphinato)manganese chloride ( T (p- Cl ) PPMnCl ) was the most efficient catalyst for the oxidation of p-xylene. Under the conditions of 180 °C and 2.0 MPa, 44% conversion of p-xylene and 85% selectivity of p-toluic acid were obtained. Based on the results obtained, a preliminary mechanism of the oxidation of p-xylene over metalloporphyrins was proposed.
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- 2007
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17. Effects of androgen on the expression of brain aromatase cytopigment and nerve growth factor in neonatal rats with hypoxic-ischemic brain damage
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Zhan-Kui, Li, Ling, Shen, Hua, Ke, Fei, Li, Li-Ming, Ni, and Qing-Hong, Li
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Male ,Neurons ,Rats, Sprague-Dawley ,Aromatase ,Animals, Newborn ,Hypoxia-Ischemia, Brain ,Nerve Growth Factor ,Androgens ,Animals ,Brain ,Female ,Immunohistochemistry ,Rats - Abstract
To study the effects of androgen on the expression of aromatase cytopigment P450 (AROM) and nerve growth factor (NGF) in the brain and brain ultrastructure in neonatal rats with hypoxic-ischemic brain damage (HIBD) in order to investigate the mechanism underlying the protective effect of androgen against HIBD.Ninety-six seven-day-old Sprague-Dawley rats were randomly divided into three groups: sham-operation, HIBD and androgen treatment (n=32 each). HIBD was induced by the ligation of left common carotid artery and hypoxia exposure. The rats in the androgen treatment and the HIBD groups were injected intraperitoneally with testosterone propionate (25 mg/kg) and arachis oil respectively immediately after hypoxia-ischemia (HI). After 24 and 72 hrs and 7 and 10 days of HI, AROM and NGF expression in the cortex and the hippocampus was detected with the immunohistochemical method. The ultrastructural changes of neurons in the cortex and the hippocampus were observed under a transmission electron microscope.Nerve cells of the HIBD group showed obvious injuries including cell organ decreasing, cellularoedema, nuclear swelling, chromatic agglutination, mitochondria decreasing and swelling, as well as an increase in apoptotic cells. Compared with the HIBD group, the nerve cells in the androgen treatment group had integrated nuclear membrane, well-distributed chromatin and abundant cell organs, and less cell apoptosis and increased axon regeneration. There was a positive expression of NGF and AROM in the brain cortex and the hippocampus in the HIBD group 24 hrs after HI. The expression of NGF and AROM increased significantly 72 hrs after HI, peaked 7 days after HI and then began to decrease but remained at a higher level than that in the sham-operation group 10 days after HI. The NGF and AROM expression in the cortex and the hippocampus in the androgen treatment group was significantly higher than that in the sham-operation and the HIBD groups 72 hrs, and 7 and 10 days after HI.Androgen treatment can promote axon regeneration and morphous recovery of neurons and decrease neural apoptosis in neonatal rats with HIBD. The neuroprotection of androgen is produced possibly through an increase in the expression of NGF and AROM in the brain.
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- 2008
18. [Effects of androgen on phosphacan and NG2 proteoglycan expression and neurite regeneration in neonatal rats with hypoxic-ischemic brain damage]
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Zhan-Kui, Li, Hua, Ke, Li-Ming, Ni, and Qing-Hong, Li
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Brain Chemistry ,Male ,Receptor-Like Protein Tyrosine Phosphatases, Class 5 ,Immunohistochemistry ,Nerve Regeneration ,Rats ,Testosterone Propionate ,Rats, Sprague-Dawley ,Random Allocation ,Animals, Newborn ,Microscopy, Electron, Transmission ,Hypoxia-Ischemia, Brain ,Neurites ,Animals ,Female ,Proteoglycans ,Antigens - Abstract
To study the effects of androgen on the expression of phosphacan and NG2 proteoglycan (NG2) and neurite regeneration in neonatal rats with hypoxic-ischemic brain damage (HIBD) and the potential mechanism underlying the protective effect of androgen against HIBD.One hundred and twenty neonatal Sprague-Dawley rats were randomly divided into three groups: sham-operated, HIBD and androgen treatment. HIBD was induced by the ligation of left common carotid artery and hypoxia exposure. The androgen treatment group rats were injected with testosterone propionate (25 mg/kg) immediately after HIBD. Phosphacan and NG2 expression in the cortex and the hippocampus was detected with the immunohistochemical method 24 and 72 hrs and 7 and 10 days after hypoxia-ischemia (HI). The ultrastructure and neurite regeneration of neurons in the cortex and the hippocampus were observed under a transmission electron microscope.The neurite regeneration was obvious in the sham-operated group, but seldom in the HIBD group. The androgen treatment group showed increased neurite regeneration compared with the HIBD group. There were fewer phosphacan and NG2 positive cells in the cortex and the hippocampus in the sham-operated group. Phosphacan and NG2 expression in the cortex and the hippocampus was observed at 24 hrs, increased at 72 hrs, and peaked at 7 days after HI in the HIBD group and remained at a higher expression 10 days after HI than in the sham-operated group. The levels of phosphacan and NG2 expression in the cortex and the hippocampus in the androgen treatment group were significantly reduced compared with those in the HIBD group 24 and 72 hrs and 7 and 10 days after HI (P0.01).Phosphacan and NG2 may be important inhibitory factors for neurite regeneration following HIBD in neonatal rats. The neuroprotection of androgen against neonatal HIBD is produced possibly through an inhibition of phosphacan and NG2 expression.
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- 2008
19. [Prenatal restraint stress decreases neurogranin expression in rat offspring hippocampus]
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Hui, Li, Qing-Hong, Li, Zhong-Liang, Zhu, Rui, Chen, Da-Xin, Cheng, Qing, Cai, Ning, Jia, and Liang, Song
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Male ,Rats, Sprague-Dawley ,Restraint, Physical ,Pregnancy ,Prenatal Exposure Delayed Effects ,Blotting, Western ,Animals ,Female ,Neurogranin ,Hippocampus ,Immunohistochemistry ,Stress, Psychological ,Rats - Abstract
Neurogranin, a neuron-specific postsynaptic protein, has been considered to play an important role in synaptic plasticity and learning and memory. The present study aimed to investigate the effects of prenatal restraint stress on neurogranin expression in rat offspring hippocampus. Pregnant rats were given a restraint stress (3 times a day for 7 d, 45 min each time) at the late stage of gestation except that in the control group. The offspring rats were divided into four groups: female control group, male control group, female stress group and male stress group. Expression of neurogranin was determined by immunohistochemistry and Western blot. The results showed that neurogranin-positive immunostaining was detected in all areas of the hippocampus. The staining density was stronger in the CA1 and CA3 regions than that in the dentate gyrus (DG) region. Western blot assay showed that neurogranin protein level in female and male prenatal stressed offspring was significantly lower than that in the controls (P0.01). Neurogranin level was significantly lower in the female stress group than that in the male stress group, whereas there was no significant gender difference in the control group. Immunohistochemical data further confirmed these results. The present study provides evidence that prenatal restraint stress induces gender-dependent decrease in neurogranin expression in the offspring hippocampus. The prenatal restraint stress-induced decrease in neurogranin expression in the hippocampus might be associated with the deficit in spatial learning and memory reported previously.
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- 2007
20. [Long-term results of different treatment modalities in 464 hypopharyngeal squamous-cell carcinoma patients]
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Zong-Min, Zhang, Ping-Zhang, Tang, Zhen-Gang, Xu, Qing-Hong, Li, Yu-Hua, Hu, Guo-Zhen, Xu, Li, Gao, and Gui-Yi, Tu
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Adult ,Aged, 80 and over ,Male ,Hypopharyngeal Neoplasms ,Middle Aged ,Combined Modality Therapy ,Survival Rate ,Lymphatic Metastasis ,Carcinoma, Squamous Cell ,Humans ,Female ,Aged ,Follow-Up Studies ,Neoplasm Staging ,Retrospective Studies - Abstract
To present the treatment results and to identify the most effective therapeutic plan of different therapeutic modalities in patients with squamous-cell carcinoma of hypopharynnx.A retrospective review of 464 patients with squamous-cell carcinoma of the hypopharynx treated between 1958 and 1998 was accomplished. The clinical characteristics, results of different treatments were analyzed by SPSS 10.0 statistic software.Of 464 patients, the age ranged from 20 to 88 years (mean 56.3 years) and the male to female ratio was 5.5:1. The primary lesion of 383 were originated from the pyriform sinus, 40 from posterior pharyngeal wall and 41 from the postcricoid area. According to the UICC 1997 TNM staging system, 75% had T3 or T4 lesion or 92.2% stage III or IV on presentation. 65% had neck metastases. 202 patients were treated with preoperative radiation plus surgery (R + S), 22 with surgery plus postoperative radiation (S + R), 26 surgery alone (S), 40 patients with salvage surgery after radiotherapy failure (RF) and 174 patients with radiotherapy alone. The overall 5-year survival rate was 34.2%. The overall 5-year survival rate of R + S group was 46.3%, S + R group was 49.2%, S alone group 22.8%, RF group was 40.8%, radiotherapy alone group 18.0% (P0.01). The overall 5-year survival rate of R + S group was higher than that of S alone group (P = 0.046). The rate of larynx preservation in R + S group was 39.6% in contrast to that of S + R and S alone group of 16.7% (P = 0.003).The survival rate of patients with squamous-cell carcinoma of the hypopharynx treated with combined therapy (R + S or S + R) is better than the other therapeutic modalities. R + S combined is able to offer an obviously higher rate of larynx preservation (39.6% vs 16.7%).
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- 2005
21. Study on corneal epithelial thickness changes after small incision lenticule extraction
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Lin Zheng, Qing-Hong Lin, and Zheng-Wei Shen
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myopia ,SMILE ,epithelial thickness ,spherical equivalent ,ablation depth ,Ophthalmology ,RE1-994 - Abstract
AIM: To investigate the changes of corneal epithelial thickness following small incision lenticule extraction(SMILE), and its relationship with the ablation depth, spherical equivalent and optical zone. METHODS: Sixty-one myopic patients with or without astigmatism who underwent SMILE in our hospital from August 2017 to November 2017 were selected. RTvue-OCT was performed before surgery, 1wk, 1mo and 6mo after surgery, respectively, and the corneal epithelial thickness of patients were measured. The changes of corneal epithelial thickness following small incision lenticule extraction(SMILE), and its relationship with the ablation depth, spherical equivalent and optical zone were studied.RESULTS: There was no statistically significant difference in the thickness of corneal epithelium among the three regions(central corneal region, para-central corneal region and peripheral region)before surgery(P>0.05). Compared with the baseline values before surgery, the thickness of corneal epithelium in the three areas was significantly thickened 1wk, 1mo and 6mo after surgery(PCONCLUSION: The corneal epithelial thickness increases after SMILE in different regions, and the thickening value was positively correlated with the spherical equivalent, ablation depth.
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- 2019
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22. Two New Simple Multi-Symplectic Schemes for the Nonlinear Schrödinger Equation
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Yu-Shun, Wang, primary, Qing-Hong, Li, additional, and Yong-Zhong, Song, additional
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- 2008
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23. Aerobic liquid-phase oxidation of p-xylene over metalloporphyrins.
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Quan Jiang, Hai-Yang Hu, Can-Cheng Guo, Qiang Liu, Jian-Xin Song, and Qing-Hong Li
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- 2007
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24. Complications of femtosecond laser corneal small incision lenticule extraction
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Qing-Hong Lin, Lin Zheng, and Qian Wang
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femtosecond laser ,small incision lenticule extraction ,complication ,Ophthalmology ,RE1-994 - Abstract
AIM:To investigate the safety and complications of femtosecond laser corneal small incision lenticule extraction(SMILE)procedure and discuss the prevention and treatment.METHODS: We retrospectively studied the complications of 403 patients(799 eyes)with myopia and myopic astigmatism treated by SMILE.RESULTS: All the patients underwent the operation successfully. Only 1 case(1 eye)suffered from dark spot and changed to femtosecond laser-assisted LASIK(FS-LASIK), 5 cases(5 eyes, 0.6%)suffered from the suction loss, 11 cases(17 eyes, 2.1%)developed opaque bubble layer. All patients gained perfect uncorrected visual acuity(UCVA)(20/20). The best corrected visual acuity(BCVA)did not decrease after operations. The incidence of haze and diffuse lamellar keratitis was low(0.3% and 0.4%, respectively)and no other complications were observed. There was 9 eyes in 6 patients(1.1%)found regression of refraction at 6mo after surgery, while the UCVA of rest patients reached 1.0 at 3mo after surgery.CONCLUSION: The SMILE procedure has high safety for myopia and myopic astigmatism. Effective prevention and management of the complications is the key to achieve the satisfactory visual acuity.
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- 2017
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25. Clinical study of the clusters of diffuse lamellar keratitis after laser corneal refractive surgery
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Qing-Hong Lin and Li-Xia Wang
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diffuse lamellar keratitis ,complication ,cluster ,small-incision lenticule extraction ,Ophthalmology ,RE1-994 - Abstract
AIM: To investigate the potential causes and management of the clusters of diffuse lamellar keratitis(DLK)after laser corneal refractive surgery. METHODS: The study enrolled 98 eyes(53 patients)complicated with DLK after receiving laser in situ keratomileusis(LASIK), FS-LASIK or small-incision lenticule extraction(SMILE)in our center from February 10th,2016 to February 22th,2016. They were given clinical classification treatments according to corneal layer inflammatory extent and then followed up after 1, 3, 5, 7, 10d and 1mo. RESULTS: The clusters of DLK occurred 5 times in the study period. The incidence and degree of DLK significantly decreased after changed the sterilization, surgical equipments, temperature and humidity of the operating room. There were 80 eyes(82%)had stage 1 DLK, 11 eyes(11%)had stage 2, 4 eyes(4%)had stage 3 and 3 eyes(3%)had stage 4. The incidence of DLK after FS-LASIK was 40%(79 eyes in 42 patients), that after LASIK assistant by Hastome keratome was 45%(10 eyes in 5 patients), that after SMILE was 20%(9 eyes in 6 patients). After intensive treatment, as glucocorticoid treatment and flap lifting flushing, all cases recovered within 1mo. CONCLUSION: The outbreak of DLK may be associated with the disposable item, flushing liquor, temperature and humidity of the operating room. Early diagnosis, prevention and treatment are the key of decreasing the incidence of DLK.
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- 2017
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26. Value of postoperative radiotherapy for thyroid cancer
- Author
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Xian Wen Ha, Jin Rong Guo, Yu Hua Hu, Wu Xl, Jie Hua Van, Guo Zhen Xu, Qing Hong Li, Xian Zhi Gu, De Xing Qin, and Duo Sun
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Adult ,medicine.medical_specialty ,Adolescent ,business.industry ,Poorly differentiated ,medicine.medical_treatment ,Carcinoma ,Postoperative radiotherapy ,Cancer ,Middle Aged ,medicine.disease ,Combined Modality Therapy ,Surgery ,Radiation therapy ,Dissection ,Otorhinolaryngology ,medicine ,Humans ,In patient ,Thyroid Neoplasms ,business ,Thyroid cancer ,Survival rate ,Aged ,Retrospective Studies - Abstract
A series of 405 patients with thyroid cancer treated by surgery with or without postoperative radiotherapy from February 1958 through 1979 is reported. The immediate evaluation of the operation was that it was either incomplete or complete. Incomplete surgery implied that there was (1) possible residual tumor in the operative field, the result of difficult dissection of the tumor off the neighboring organs or tissues, as assessed by the surgeon; (2) multiple (more than five) lymph nodes involved; (3) positive border of the removed lesions; or (4) microscopic evidence of tumor in the operative field. Complete surgery implied through extirpation of cancer grossly and microscopically. In 297 patients who had complete surgery, 238 patients treated by surgery alone had a 5-year survival rate of 92% (218/238), while 59 patients who received postoperative radiotherapy had a 5-year survival rate of 78% (46/59). The optimum dose of postoperative radiotherapy was 50-70 Gy in 5 to 8 weeks, with the spinal dose kept under 40 Gy. Our experience shows that postoperative radiotherapy did not improve the survival of patients who had had complete surgery. Yet, in 108 patients who had incomplete surgery, surgery alone yielded a 5-year survival rate of 33% (19/57), while surgery plus radiotherapy yielded a 5-year survival of 71% (36/51). Our observation shows a remarkable benefit with postoperative radiotherapy in patients who have had incomplete surgery (P less than 0.05). According to pathologic criteria, postoperative radiotherapy was more effective in well-differentiated cancers than in poorly differentiated ones. It was equally effective in untreated as well as recurrent lesions. The prognosis for younger patients was better, but the sex of the patients did not affect prognosis.
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- 1987
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