1.Advances in the study of mincle, a new C-type lectin receptor
Chinese Journal of Experimental Ophthalmology 2013;(7):688-691
Macrophage-inducible C-type lectin (mincle receptor) is a novel unclassical C-type lectin receptor member,which is mainly expressed on the surface of antigen presenting cells.Under the stimulation of fungus,mycobacterium tuberculosis and necrotic cells,mincle receptor plays anatural immune effect in host body by binding to relevant ligand and activate nuclear factor-κB (NF-κB) signaling pathway,which promotes the expression of many inflammatory factors.Up to now,the laboratory and clinical studies on mincle receptor and infected diseases is being a hot topic.However,these study is lack in ophthalmology.Understanding the association of mincle receptor to infected eye diseases will offer a new approach to the immunotherapy.The basic concept,acting mechanism,its relationship to inflammatory eye diseases and outlook in ophthalmology of mincle receptor were reviewed in this paper.
2. Effects of fertilization ratios of N, P, and K on yield and active ingredients of Angelica dahurica var. formosana from Sichuan Province
Chinese Traditional and Herbal Drugs 2011;42(1):153-157
Objective: To study the effects of the applied amounts and their ratios of nitrogen (N), phosphorus (P), and potassium (K) on the yield and active ingredients of Angelica dahurica var. formosana from Sichuan Province. Methods: The field tests on N, P, and K ratios of A. dahurica var. formosana from Sichuan Province were carried out by using orthogonal combination design, the yield was weighted, and the imperatorin and isoimperatorin contents in its roots were determined by HPLC method. Results: The yield and the quality of A. dahurica var. formosana from Sichuan Province were extremely affected by different N, P, and K ratios. The yield was increased with N, P, and K, but for imperatorin and isoimperatorin content, the influence of different N, P, and K ratios is very different. The imperatorin content was increased with the moderate increase of N and P under the lower level of K (K2O 120 kg/hm2). The isoimperatorin content was increased with the moderate supplies of N and P ratios under the high level of K (K2O 240 kg/hm2). Whatever the ratios of P and K, the imperatorin content and isoimperatorin content are lower than that in the control treatment under the high level of N (195 kg/hm2). The orthogonal analysis of variance results also showed that the effects of N, P, and K on the yield reached extremely significant. The sequence of them was P > N > K.. The influence of N, P, and K on imperatorin all reached extremely significantly different level (P < 0.01). Among them, the effect of P and K was higher than that of N. But only N had significant influence on the contents of isoimperatorin (P < 0.05). The adapted combined application program was N 150 kg/hm2, P 2O5 225 kg/hm2, and K2O 120 kg/hm2, namely the ratio of N- P2O- K2O was 1.3:1.9:1, by which the highest yield and imperatorin content were obtained. There were significant difference compared with the control and its isoimperatorin content was the highest as well. Conclusion: The above ratios of N, P, and K could improve the yield and quality of A. dahurica var. formosana from Sichuan Province as well as the content of imperatorin and isoimperatorin.
3.Advancement of Quorum Sensing in Rhizobia
Jun GU ; Wen-Feng CHEN ; Qiang CHEN ; Wen-Xin CHEN ;
Microbiology 1992;0(06):-
Quorum sensing is defined as the cell density-dependent regulation of gene expression, and the involved system is the quorum sensing system, in which N-acyl homoserine lactone is known as the signal molecules of most gram-negative organisms. It can regulate diverse physiological functions. This paper reviewed the quorum sensing systems and the recent advances which play a major role in the formation of the symbiosis between the rhizobia and their host plants.
4.Surgical Treatment of Advanced Rectal Carcinoma in Aged People
Shaohua YANG ; Shaoyi CHEN ; Jun WEN
Journal of Chinese Physician 2001;0(04):-
Objective To explore the surgical treatment of advanced rectal carcinoma in aged people. Methods The clinical data of 65 aged patients with advanced rectal carcinoma from 2000 to 2004 were analyzed retrospectively. Results All cases were Dukes D stage or accompanied with hepatic metastasis. Hartmann's operation was performed in 26 cases, single lumen sigmoidostomy in 11 cases, double lumen sigmoidostomy in 11 cases and resection of hepatic metastatic cancer in 12 cases. Rectal upper arterial catheter chemotherapy was performed in 19 cases and hepatic arterial catheter chemotherapy in 15 cases. The 3-year survival rate of Hartmann's operation was 34%(9/26), and the average survival time was 20?3.17 months in the patients underwent rectal upper and hepatic arterial catheter chemotherapy, and 10?1.77 months in the patients who could not be treated surgically(P
5.Exploration and Practice of Bilingual Teaching Method in Laboratory Diagnosis
Aiqing WEN ; Jun WANG ; Wei CHEN
Chinese Journal of Medical Education Research 2006;0(12):-
Medical bilingual teaching method is a developing teaching form recently.And bilingual teaching method in Laboratory Diagnosis is one of the reforms to meet the present challenge.At present,it has no uniform mode.In this paper the understanding of the objective of Laboratory Diagnosis and the strategies in the Bilingual teaching are discussed.
6.Relationship between range of operative and postoperative ovary function in 55 endometriosis
Chinese Journal of Practical Gynecology and Obstetrics 2001;17(2):102-104
ObjectiveTo study the relationship between the range of operations and the incidence of climacteric syndrom,the time of episode, degree and estrogen level in endometriosis after operations. MethodsThesexual hormone level was measured and climacteric syndrome was followed up after operation in 55 endometriosis. ResultsThe incidence of climacteric syndrom in oophorectomy was more frequent and earlier than partial oophorectomy. Meanwhile, the syndrome was much severe and the level of E2 was lower in the former group than those in the later one. ConclusionSo we should retain the ovary tissue and blood supply as much as possible. 6 months postoperation is suggested to be suitable to begin hormone replacement therapy. The dosage should be adviced to remain the blood hormone level just like one ovary does.
9.Expression of HOXB6 Gene on Differentiation of Hematopoietic Stem Cells and Intervention Research
hong-ying, CHEN ; ai, CHEN ; wen-jun, LIU
Journal of Applied Clinical Pediatrics 1993;0(03):-
Objective To observe the expression level of HOXB6 gene on the differentiation and proliferation of hematopoietic stem cells(HSC) to colony forming unit-granulocyte-monocyte(CFU-GM),erythroid progenitor(CFU-E) and colony forming unite-T-lymphocyt(CFU-TL).And the proliferation procress was affected by all-transretinoic acid(ATRA).Methods 1.By the colony culture in vitro,the impact of ATRA on the CFU-GM,CFU-E,CFU-TL colony formation were surveyed;the expressions of HOXB6 gene were observed on the differentiation procress of HSC to CFU-GM,CFU-E and CFU-TL affected by ATRA on the 3rd,7th,12th.2.Real-time fluorogenic quantitative reserve transcription-polymerize chain reaction(FQ-RT-PCR) method was used to explore the possible mechanism of ATRA up-regulated to human cord blood CFU-GM,CFU-E and CFU-TL in gentic level.Results 1.HOXB6 gene had a regulatory function in the differentiation procress of hematopoiesis.During the differentiation and proliferation of HSC to colony forming CFU-GM or CFU-E,CFU-TL in vitro,the expressions of HOXB6 gene were significant positive.2.Compared with the expressions of CFU-GM and CFU-TL HOXB6 mRNA on day 3,the quantity of HOXB6 mRNA was obviously higher on day 7 and lower on day 12,respectively in each group.Compared with the expression of CFU-E HOXB6 mRNA on day 3,the quantity of HOXB6 mRNA was obviously higher on day 12 in each group.3.Compared with the HOXB6 gene of control group,the expressions of HOXB6 gene of group ATRA were up-regulated remarkable.Conclusions 1.HOXB6 gene has a regulatory function in the differentiation procress of hematopoiesis.HOXB6 gene plays an important role in the progress which can be associated with the regulating effect of HOXB6 gene on the differentiation and proliferation of CFU-GM,CFU-E and CFU-TL.2.During the differentiation and proliferation of HSC,the expression of HOXB6 gene is regular in time.3.Low concentration of ATRA(60 ?mol?L-1) can up-regulate the expression of HOXB6 gene,which confirms the theory that the normal hematopoie-tic lineage determination and maturation rely on the stable and consistent expression of HOXB6 gene.
10.Analysis of Nosocomial Deep Mycosis in Our Hospital
Jun CHEN ; Pingkang WEN ; Huiyang CHEN ; Xuping HE ; Yi XIE
China Pharmacy 2001;0(09):-
OBJECTIVE:To prevent and reduce the occurrence of nosocomial deep mycosis.METHODS:The medical records of patients with nosocomial deep mycosis in the period from January2001to December2002in this hospital were ret?rospectively analysed.RESULTS:There were43patients with nosocomial deep mycosis,which accounted for10.54%of all nosocomial infections in the same period.The predilection sites were respiratory tract(34.88%)and digestive tract(30.23%). The main pathogen was Candida albicans(77.78%).All patients had serious underlying diseases and were treated with broad-spectrum antibiotics,and some of them had received adrenocortical steroids.CONCLUSION:Rational use of broad-spectrum antibiotics and adrenocortical steroids is the most important way to prevent deep mycosis and improve the prognosis.