Advances in mechanism and application of the heating effect in breeding of microorganism are reviewed in this paper. Heat produces mutagenesis effect and screening effect. Heating mutagenesis effect is occurred through the substitution of G-C base pair induced by heat, and heating screening effect produces higher forward mutation rate induced by other mutagens.

Aged ; Aged, 80 and over ; Basilar Artery ; abnormalities ; Female ; Humans ; Male ; Middle Aged ; Trigeminal Neuralgia ; etiology

Objective To investigate the expression of osteopontin(OPN) mRNA in breast tissues containing microcalcifications and the significance of OPN in tumor pathogenesis and metastasis of breast cancer.Methods The expression of OPNmRNA in 128 samples of tissues of breast lesions and adjacent breast tissues and 9 samples of metastatic lymph nodes were examined.Results The expression of OPNmRNA was highest in(calcified) foci of breast cancer tissues and in metastatic lynph nodes,lower in calcified foci of benign breast tissues and lowest in breast tissues adjacent to breast cancer and in benign tissues without calcification.The differences between the defferent tissues were significant(all P

Litsea cubeba is one of aromatic medicinal plant belonging to family Lauraceae. The roots, stems and fruits of L. cubeba have been widely applied as folk medicines in some districts in China for relieving rheumatism and cold, regulating Qi (meridian) to alleviate pain. Previous studies revealed that this species contains major alkaloids, in specific aporphines, and minor flavonoids, lignans as well. Related pharmacological investigations demonstrated its activities and clinical applications on cardiovascular diseases, anti-cancer, against rheumatoid arthritis, relieving asthma and anti-allergic effects, as anti-oxidants, and so on. As an effort for further exploration of this bioactive ingredients and potential drug development, this paper summarizes most phytochemical and pharmacological results. Further, future prospects are also included.
Animals ; Drug Therapy ; Humans ; Litsea ; chemistry ; Molecular Structure ; Plant Extracts ; chemistry ; pharmacology ; Plants, Medicinal ; chemistry

A phytochemical investigation on the roots and stems of Litsea cubeba led to the isolation of seven isoquinolone alkaloids. By spectroscopic analysis and comparison of their 1H and 13C-NMR data with those in literatures, these alkaloids were identified as (+)-norboldine (1), (+)-boldine (2), (+)-reticuline (3), (+)-laurotetanine (4), (+)-isoboldine (5), (+)-N-methyl-laurotetanine (6), and berberine (7), respectively. Among them, 7 was isolated from the genus for the first time. The evaluation of these compounds showed weak anti-inflammatory activity against NO production in RAW 267.4 and BV-2 cells.
Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Litsea ; chemistry ; Molecular Structure ; Plant Roots ; chemistry ; Plant Stems ; chemistry ; Spectrometry, Mass, Electrospray Ionization

The lethal chronic airway infection of the cystic fibrosis (CF) patients is predisposed by colonization of specific CF-philic pathogens or the CF microbiomes, but key processes and reasons of the microbiome settlement in the patients are yet to be fully understood, especially their survival and metabolic dynamics from normal to diseased status under treatment. Here, we report our meta-analysis results on CF airway microbiomes based on metabolic networks reconstructed from genome information at species level. The microbiomes of CF patients appear to engage much more redox-related activities than those of controls, and by constructing a large dataset of anti-oxidativestress (anti-OS) genes, our quantitative evaluation of the anti-OS capacity of each bacterial species in the CF microbiomes confirms strong conservation of the anti-OS responses within genera and also shows that the CF pathogens have significantly higher anti-OS capacity than commensals and other typical respiratory pathogens. In addition, the anti-OS capacity of a relevant species cor-relates with its relative fitness for the airways of CF patients over that for the airways of controls. Moreover, the total anti-OS capacity of the respiratory microbiome of CF patients is collectively higher than that of controls, which increases with disease progression, especially after episodes of acute exacerbation and antibiotic treatment. According to these results, we propose that the increased OS in the airways of CF patients may play an important role in reshaping airway micro-biomes to a more resistant status that favors the pre-infection colonization of the CF pathogens for a higher anti-OS capacity.

?AlM: To investigate repeatability and accuracy of a latest Keratograph for evaluating the tear film stability and to compare its measurements with that of traditional examination methods.
?METHODS: The results of noninvasive tear film break-up time ( Nl-BUT ) including the first tear film break-up time ( BUT-f ) and the average tear film break-up time ( BUT - ave ) were measured by Keratograph. The repeatability of the measurements was evaluated by coefficient of variation ( CV ) and intraclass correlation coefficient ( lCC) . Wilcoxon Signed-Rank test was used to compare Nl-BUT with fluorescein tear film break-up time ( FBUT) to confirm the correlation between Nl-BUT and FBUT, Schirmer l test values. Bland-Altman analysis was used to evaluate consistency.
?RESULTS: The study recruited 48 subjects ( 48 eyes ) (mean age 38. 7±15. 2 years). The CV and lCC of BUT-f were respectively 12. 6% and 0. 95, those of BUT-ave were 9. 8% and 0. 96. The value of BUT-f was lower than that of FBUT. The difference had statistical significance ( 6. 16±2. 46s vs 7. 46±1. 92s, P<0. 01). There was significant positive correlation between Nl-BUT and FBUT, Schirmer l test values ( P< 0. 01 ). The scope of 95% limits of agreement (LoA) was 4. 46s in BUT-f and FBUT, while the scope of LoA was 3. 64s in BUT-ave and FBUT.
?CONCLUSlON: Keratograph can provide Nl-BUT data that has a better repeatability and reliability, which has great application prospects in diagnosis and treatment of dry eye and refractive corneal surgery.

OBJECTIVE: To investigate the effect and prognosis of stage I total hip replacement in the treatment of severe hip osteoarthritis with proximal femoral fracture. METHODS: From July 2014 to October 2017, 8 patients with severe end-stage hip disease and proximal femoral fracture were treated with stage I total hip replacement including 6 males and 2 females, aged 59 to 72 years old with an average age of 65 years old, involving 4 femoral head necrosis with proximal femoral fracture in the right side, 3 femoral head necrosis with proximal femoral fracture in the left side, and 1 left acetabular dysplasia with proximal femoral fracture in the left side. The average time from injury to operation was 7 days. Eight patients were treated with biologically elongated hip prosthesis. RESULTS: Eight patients with stage I total hip arthroplasty were followed up for 12 to 48 months with an average of 31 months. During the follow-up period, there was no loosening or subsidence of the prosthesis. Harris score increased from 33 points (22 to 42 points) preoperatively to 87 points(82 to 90 points) at the last follow-up. Among them, 3 cases were excellent and 5 cases were good. Abandoned abduction and walked 3 months after operation. X-ray films during 3-6 months after operation showed that fracture healing was good, hip pain and function were improved significantly, and the quality of life was greatly improved. CONCLUSIONS Phase I total hip arthroplasty for severe hip osteoarthritis patients with proximal femoral fracture has the advantages of shortening the treatment time, alleviating patients'pain, reducing hospitalization costs and good prognosis.
Aged ; Arthroplasty, Replacement, Hip ; Female ; Femoral Fractures ; Hip Prosthesis ; Humans ; Male ; Middle Aged ; Osteoarthritis, Hip ; Quality of Life ; Treatment Outcome

Objective: To investigate the status of eating disorders among overweight and obese adolescents as well as provide the basis for developing obesity precautionary and eating disorders. Methods: 910 adolescents of grade 4 to 6 in primary schools and grade 1 to 3 in junior middle schools were recruited in Bengbu by cluster random sampling to examine the association between obesity and eating disorders. Results: A total of 203 children (22.3%) were overweight and obese, 547 children (60.1%) were normal weight and 160 children (17.6%) were low weight. The prevalence of overweight and obese in boys were significantly higher than those in girls (30.6% vs. 13.0%; χ2=40.55, P<0.01). Compared with normal weight group and low weight group, the scores of drive for thinness (DT), body dissatisfaction (BD), low self-esteem (LSE) and eating disorder risk composite (EDRC) were significantly higher in overweight and obese group (P<0.05). There was a positive association between the scores of DT(r=0.19), BD(r=0.30), LSE(r=0.09), interceptive deficits (ID) (r=0.08) and EDRC (rs=0.11) with body mass index (BMI)(P<0.05). Conclusion Eating disorders were associated with overweight and obesity of adolescents. A targeted strategies and measures should be conducted.