Recent advances in the bio-production of human milk oligosaccharides 2'-FL and 3-FL / 生物工程学报

Human milk oligosaccharides (HMO) are important immunoactive components found in breast milk. Scientific research proves that HMOs are significantly beneficial for infant health. 2'-fucosyllactose (2'-FL) is the major component of HMO, which obtained growing attentions from food industry. Besides, 3-fucosyllactose (3-FL) is another important fucosyllactose and it has a similar synthetic route comparing to 2'-FL. Thus, research of the two HMO components has interactive effects for each other. Recently, numerous publications are available for 2'-FL and 3-FL. The microbial cell factory is able to massively produce fucosyllactose via an efficient way, which will show considerable influences in dairy industry. In this paper, we review recent studies on 2'-FL and 3-FL, and discuss their prospects according to published literature and patents.

Changes and clinical significance of intestinal Bacteroides in obese children / 中国基层医药

Objective:To analyze the diversity of Bacteroides in simple obesity children aged 7-14 and the difference from that of normal individuals.And to explore the influence of children's simple obesity on intestinal advantage bacterium of the genus.Methods:We have collected fecal samples of 30 cases with simple obesity aged 7 to 14 years old and 30 healthy children in the Central Hospital of Shan County.All bacterial DNAs were extracted from the feces, and then Bacteroides 16s DNA specific primers was used in PCR amplification, separated by DGGE, the intestinal Bacteroides molecular fingerprints of obese children and healthy children were obtained, and the diversity and similarity were analyzed.At the same time, the weight, height, BMI, blood pressure, blood lipid, leptin, plasma adiponectin in the obesity and normal children were measured, the relationship between the obese children and the advantage of intestinal bacteria genera and its clinical significance were investigated.Results:The BMI[(25.71±3.28)kg/m 2], SBP[(121±12.4)mmHg], TG[(1.15±0.40)mmol/L], TC[(4.20±0.73)mmol/L], LEP(18.94±1.68) in the obesity group were higher than those in the normal group [BMI(17.38±3.54)kg/m 2, SBP(104±7.3)mmHg, TG(0.87±0.31)mmol/L, TC(3.37±0.86)mmol/L, LEP(11.29±2.41)](all P<0.05). The levels of HDL[(1.01±0.28)mmol/L] and ADP(4.10±2.32) in the obesity group were lower than those in the normal group [HDL(1.40±0.26)mmol/L, ADP(5.84±3.42)]( P<0.05). There were no statistically significant differences in age, DBP and LDL levels between the two groups (all P>0.05). The stripe number of Bacteroides DGGE profiles (9.33±1.37) and H index(2.07±0.16) in the obesity group were lower than those in the normal group [(17.33±2.80), (2.67±0.20)]. Cluster analysis results showed that the similarities of obese individuals in the group and compared with normal group were reduced.The S and H index of DGGE profiles in Bacteroides were negatively correlated with BMI and LEP ( P<0.01), and positively correlated with ADP( P<0.05). S, H index of the normal group were negatively correlated with LEP ( P<0.05), and had no correlation with BMI, ADP( P>0.05). S and H index of the obesity group were negatively correlated with BMI and LEP, and had no correlation with ADP ( P>0.05). Conclusion:Human intestinal flora of Bacteroides changes is related to childhood obesity, the diversity and similarity of obese children's intestinal Bacteroides species are decreased.The diversity of obesity children's Bacteroides is associated with BMI, ADP and LEP.

Splenectomy for the treatment of ideopathic thrombocytopenic purpura in 202 cases / 中国普通外科杂志

Objective To evaluate the long term effectiveness of splenectomy in the treatment of ideopathic thrombocytopenic purpura (ITP) and probe into the specific management pre and post operatively. Method We analyzed 202 splenectomized ITP patients from January 1974 to June 2001 retrospectively and divided them into the effective and non effective groups according the postoperative improvement of their clinical symptoms. Results Post operative complications developed in 18 cases (8 9%), 189 cases achieved long term follow up. Good result was achieved in 159 cases including excellent in 96 and fair in 63, surgery was ineffective in 30 cases. Six cases(3 2%) died of surgery related complications during the long term follow up. In the first week after operation platelet counts reached 100?10 9/L in 118 cases, among them 110 cases(69 2%) fell into effective group and 8 cases(26 7%) fell into ineffective group( ? 2= 19 45, P