Real-time reverse transcription-polymerase chain reaction assay panel for the detection of severe acute respiratory syndrome coronavirus 2 and its variants / 中华医学杂志(英文版)

BACKGROUND@#With the ongoing worldwide coronavirus disease 2019 (COVID-19) pandemic, an increasing number of viral variants are being identified, which poses a challenge for nucleic acid-based diagnostic tests. Rapid tests, such as real-time reverse transcription-polymerase chain reaction (rRT-PCR), play an important role in monitoring COVID-19 infection and controlling its spread. However, the changes in the genotypes of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants may result in decreased sensitivity of the rRT-PCR assay and it is necessary to monitor the mutations in primers and probes of SARS-CoV-2 detection over time.@*METHODS@#We developed two rRT-PCR assays to detect the RNA-dependent RNA polymerase (RdRp) and nucleocapsid (N) genes of SARS-CoV-2. We evaluated these assays together with our previously published assays targeting the ORF1ab and N genes for the detection and confirmation of SARS-CoV-2 and its variants of concern (VOCs). In addition, we also developed two rRT-PCR assays (S484K and S501Y) targeting the spike gene, which when combined with the open reading frames (ORF)1ab assay, respectively, to form duplex rRT-PCR assays, were able to detect SARS-CoV-2 VOCs (lineages B.1.351 and B.1.1.7).@*RESULTS@#Using a SARS-CoV-2 stock with predetermined genomic copies as a standard, the detection limit of both assays targeting RdRp and N was five copies/reaction. Furthermore, no cross-reactions with six others human CoVs (229E, OC43, NL63, HKU1, severe acute respiratory syndrome coronavirus and Middle East respiratory syndrome coronavirus) were observed using these assays. In addition, the S484K and S501Y assays were combined with the ORF1ab assay, respectively.@*CONCLUSIONS@#Four rRT-PCR assays (RdRp, N, S484K, and S501Y) were used to detect SARS-CoV-2 variants, and these assays were shown to be effective in screening for multiple virus strains.

Immunogenicity and safety of a severe acute respiratory syndrome coronavirus 2 inactivated vaccine in healthy adults: randomized, double-blind, and placebo-controlled phase 1 and phase 2 clinical trials / 中华医学杂志(英文版)

BACKGROUND@#The significant morbidity and mortality resulted from the infection of a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) call for urgent development of effective and safe vaccines. We report the immunogenicity and safety of an inactivated SARS-CoV-2 vaccine, KCONVAC, in healthy adults.@*METHODS@#Phase 1 and phase 2 randomized, double-blind, and placebo-controlled trials of KCONVAC were conducted in healthy Chinese adults aged 18 to 59 years. The participants in the phase 1 trial were randomized to receive two doses, one each on Days 0 and 14, of either KCONVAC (5 or 10 μg/dose) or placebo. The participants in the phase 2 trial were randomized to receive either KCONVAC (at 5 or 10 μg/dose) or placebo on Days 0 and 14 (0/14 regimen) or Days 0 and 28 (0/28 regimen). In the phase 1 trial, the primary safety endpoint was the proportion of participants experiencing adverse reactions/events within 28 days following the administration of each dose. In the phase 2 trial, the primary immunogenicity endpoints were neutralization antibody seroconversion and titer and anti-receptor-binding domain immunoglobulin G seroconversion at 28 days after the second dose.@*RESULTS@#In the phase 1 trial, 60 participants were enrolled and received at least one dose of 5-μg vaccine (n = 24), 10-μg vaccine (n = 24), or placebo (n = 12). In the phase 2 trial, 500 participants were enrolled and received at least one dose of 5-μg vaccine (n = 100 for 0/14 or 0/28 regimens), 10-μg vaccine (n = 100 for each regimen), or placebo (n = 50 for each regimen). In the phase 1 trial, 13 (54%), 11 (46%), and seven (7/12) participants reported at least one adverse event (AE) after receiving 5-, 10-μg vaccine, or placebo, respectively. In the phase 2 trial, 16 (16%), 19 (19%), and nine (18%) 0/14-regimen participants reported at least one AE after receiving 5-, 10-μg vaccine, or placebo, respectively. Similar AE incidences were observed in the three 0/28-regimen treatment groups. No AEs with an intensity of grade 3+ were reported, expect for one vaccine-unrelated serious AE (foot fracture) reported in the phase 1 trial. KCONVAC induced significant antibody responses; 0/28 regimen showed a higher immune responses than that did 0/14 regimen after receiving two vaccine doses.@*CONCLUSIONS@#Both doses of KCONVAC are well tolerated and able to induce robust immune responses in healthy adults. These results support testing 5-μg vaccine in the 0/28 regimen in an upcoming phase 3 efficacy trial.@*TRIAL REGISTRATION@#http://www.chictr.org.cn/index.aspx (No. ChiCTR2000038804, http://www.chictr.org.cn/showproj.aspx?proj=62350; No. ChiCTR2000039462, http://www.chictr.org.cn/showproj.aspx?proj=63353).

Effect of FFA and OCT in the diagnosis of diabetic macular edema / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM: To investigate the diagnostic value of fundus fluorescein angiography(FFA)and optical coherence tomography(OCT)in the diagnosis of diabetic macular edema(DME). <p>METHODS: From January 2015 to January 2016, selected 62 patients(101 eyes)with diabetic retinopathy(DR)in our hospital, underwent FFA and OCT respectively. We compared the results of the two methods. <p>RESULTS: The detection rate of DME by FFA was 84.2%, and the detection rate of DME by OCT was 77.2%, the difference was not statistically significant(<i>P</i>>0.05). In 101 eyes, OCT and FFA all showed macular edema in 76 eyes, and no macular edema in 14 eyes, the diagnostic accuracy of OCT and FFA was 89.1%, Kappa was 0.653, and the consistency was higher(<i>P</i><0.05). Macular central retinal thickness difference was statistically significant in patients with different FFA features(<i>P</i><0.05), the diffuse edematous retinal thickness was 301.43±62.44SymbolmA@m, which was significantly thicker than the other patients. <p>CONCLUSION:OCT can objectively examine the structural changes of the macular area in diabetic patients, but it cannot replace the role of FFA in the diagnosis of macular edema, the combination of the two methods is helpful in the diagnosis of DME.

Anti-colorectal cancer effects of tripolinolate A from Tripolium vulgare / 中国天然药物

Tripolinolate A (TLA) is recently identified as a new compound from a halophyte plant Tripolium vulgare and has been shown to have significant in vitro activity against the proliferation of colorectal cancer and glioma cells. This study was designed to further investigate the effects of TLA on the proliferation of human normal cells, and the apoptosis and cell cycle in colorectal cancer cells, and the growth of tumors in the colorectal cancer-bearing animals. The data obtained from this study demonstrated that: 1) TLA had much less cytotoxicity in the human normal cells than the colorectal cancer cells; 2) TLA remarkably induced apoptosis in the human colorectal cancer cells and blocked cell cycle at G/M phase, and 3) TLA had significant anti-colorectal cancer activity in the tumor-bearing animals.

Serological Study of An Imported Case of Middle East Respiratory Syndrome and His Close Contacts in China, 2015 / 生物医学与环境科学（英文）

The first imported Middle East respiratory syndrome (MERS) case in China was identified in May 2015. We determined the kinetics of antibody (IgG and IgM) and neutralizing antibodies against MERS-coronavirus (MERS-CoV) in this case before discharge. Moreover, no seroconversion was found among 53 close contacts by anti-MERS IgG antibody enzyme-linked immunosorbent assay (ELISA) of paired serum samples. These findings suggest that neither community nor nosocomial transmission of MERS-CoV occurred in China.

Application value of FFA and OCT in diagnosis of central retinal artery and vein occlusion / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To investigate the clinical value of fundus fluorescein angiography ( FFA ) and optical coherent tomography ( OCT) in the diagnosis of central retinal vein occlusion. ●METHODS:A total of 47 cases (47 eyes) central retinal vein occlusion were retrospectively analyzed from Jun. 2012 to Dec. 2015 in our hospital ophthalmology center. According to the final diagnosis, the results were divided into 21 cases of central retinal artery occlusion ( group CRAO, 21 eyes) and central retinal vein occlusion ( group CRVO, 26 eyes ) . All patients received FFA and OCT examination within 2wk of onset, and the image data of the two kinds of examination results were analyzed. ● RESULTS: Group of patients with CRAO average macular foveola thickness, angle measuring, filling time determination results were significantly lower than that of the patients with CRVO group average and the differences were significant (P ●CONCLUSION:FFA and OCT images of central retinal artery and vein occlusion have their own characteristics, and the combination of these two images can be used to identify and diagnose the central retinal artery and vein occlusion.

Breakthrough trichosporonosis in patients receiving echinocandins: case report and literature review / 中华医学杂志(英文版)

Trichosporon species now ranks as the second most common cause of disseminated yeast infections with a high mortality rate. Breakthrough trichosporonosis in patients receiving echinocandins therapy is being recognized recently. We present a case of breakthrough trichosporonosis with acute viral myocarditis while receiving caspofungin therapy. Trichosporon infection should be considered in patients, who have risk factors for invasive fungal infection and develop unexplained clinical manifestations of infection despite treatment with echinocandins.

Efficient soluble expression and purification of influenza A nucleoprotein in Escherichia coli / 病毒学报

To efficiently express nucleoprotein (NP) of influenza A virus A/Jingke/30/95 (H3N2) in E. coli for further immunogenicity study, three forms of NP gene, NP(His) (NP fused with 6 x His tag), NPwt (wild type NP, non-fused NP with native codon) and NP(O) (codon optimized, non-fused NP) were cloned by the technologies of restriction enzyme digestion, PCR, codon optimization and gene synthesis. Three recombinant plasmids were subsequently constructed based on the prokaryotic vector pET-30a, respectively. The comparative studies with these plasmids were carried out on the gene expression efficiency, induction temperature and time, purification process and immune reactivity. It was confirmed by restriction enzyme digestion and sequencing analysis that the three NP genes were inserted into the expression plasmid pET-30a correctly. SDS-PAGE showed that all three forms of NP gene could be efficiently ex pressed in E. coli, among which NP(O) was expressed with the highest expression level. The lower temperature fermentation (T=25 degrees C) and longer time induction (t=10 h) were necessary for high-level expression of protein in soluble form. The purity of tag-free NP was up to 90% through the two-step purification process with anion-exchange and gel filtration chromatography. It was indicated by Western blot that purified NP reacted well with the serum from mice immunized with PR8 virus. These results suggest that the codon-optimized influenza A virus NP gene can be efficiently expressed in E. coli and the expressed NP protein with specific immune reactivity could be purified from the supernatant of bacterial lysate.

Immune protective effectiveness of seasonal influenza spilt vaccine against homologous and heterogonous subtypes of influenza virus in mice / 病毒学报

To investigate the seasonal influenza split vaccine's immune protective effectiveness against the homologous and heterogonous subtypes of influenza A virus challenge and the relationship between the protective effectiveness and hemagglutination inhibition (HI) antibody titer in mice. Two components of H1N1 and H3N2 in Chinese 2008-2009 seasonal influenza spilt vaccine, were derived from vaccine strain A/Brisbane/59/2007 (H1N1)-like virus and A/Brisbane/10/2007 (H3N2)-like virus respectively, and were used to immune BALB/c mice. Firstly, different doses of the vaccines were used to immunize mice and the HA immunization dosage that can induce the HI antibody titer of 40 in mice was identified; Secondly, H1N1 vaccine immunized mice were challenged with different doses of influenza virus mouse adaptation strains of A/Brisbane/59/2007 (H1N1)-like virus (MA) (referred to as A1 virus, well matched-strain in the homologous subtype) and A/Purto Rico/8/34 (H1N1) (referred to as PR8 virus, poor matched-strain in the homologous subtype) respectively, and H3N2 vaccine immunized mice were challenged with H1N1 influenza virus of A1 strain (Heterogonous subtype), body weight changes and survival rates were observed to explore the immune protective effectiveness of influenza split vaccine against the homologous and heterogonous subtypes of influenza A virus in mice. Results indicated that HI antibody titers were elevated as the HA protein immunization dosages increased from 0.15 microg, 0.5 microg, 1.5 microg, 5 microg to 15 microg in mice, and 1.5 microg HA of the seasonal influenza split vaccine could induced HI antibody titer of 40 in mice; 3LD50, 10LD50, 30LD50, 100LD50, 300LD50,1000LD50 and 3000LD50 of influenza virus strain A1 were used to challenge the H1N1 immunization mice, 1.5 microg HA of H1N1 vaccine could 100% protect mice against challenge with 1000LD50 of matched and homologous subtype of influenza virus strains A1, mice immunized with 15 microg HA of H1N1 vaccine even could 100% protect mice against challenge with 3000LD50 of influenza virus strains A1; but mice immunized with both the 1.5 microg and 15 microg HA of H1N1 vaccine were all sacrificed when challenged with 3LD50 of the mismatched and homologous subtype of influenza virus strain PR8, and mice immunized with the high dosage of 15 microg HA of H3N2 vaccine also were all sacrificed when challenged with 3LD50 of the heterogonous subtype of influenza virus strain A1. These results suggest that 1.5 microg HA of seasonal influenza split vaccine could induced HI antibody titer of 40 after one dose in mice, this dosage of HA can effectively protect mice against matched homologous subtype of influenza virus strain, but hardly to protect mice against mismatched homologous or heterogonous subtype of influenza virus strain. These results provide materials for the establishment of influenza vaccine evaluation system based on seasonal influenza vaccine.

Prognostic significance of hTERT mRNA quantitative expression in resected gastric carcinomas / 中华肿瘤杂志

<p><b>OBJECTIVE</b>By quantitative detection of telomerase expression, we investigated the relationship between telomerase expression and malignant behavior and prognosis in gastric carcinoma.</p><p><b>METHODS</b>A real-time quantitative RT-PCR (RQ-PCR) was used to quantify the hTERT mRNA copy numbers in 89 samples of gastric carcinoma and corresponding non-cancerous tissues. The clinicopathological data of enrolled patients such as age, sex, tumor size, tumor site, pathologic type, histodifferentiation, infiltration depth, lymph node metastasis, stage and survival were obtained, and were made one factor analysis of variance and COX regression prognostic analysis with those above mentioned markers. Follow-up was completed as of February 28, 2010. The median follow-up was 24 months.</p><p><b>RESULTS</b>hTERT from gastric carcinomas and corresponding non-cancerous tissues was 16.98 ± 3.56 and 11.37 ± 2.15, respectively (P < 0.05), the telomerase activity in gastric cancer was significantly higher than that in non-cancerous tissue (P < 0.05). Telomerase activity showed a positive correlation with depth of invasion, tumor differentiation and nodal metastasis (P < 0.01), and negative correlation with survival.</p><p><b>CONCLUSIONS</b>Gastric cancer with high hTERT mRNA expression indicates a more malignant potential. Detection of hTERT mRNA in gastric cancer may be useful in a better understanding of invasion, metastasis, as well as prognosis of gastric cancer and provide a more efficient therapy. The quantitative expression of hTERT mRNA, infiltration depth and pTNM stage are significant afactors affecting the prognosis of patients with gastric carcinoma.</p>

The 50% effective dose (ED50a) of seasonal spilt influenza vaccine in mice / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To evaluate the seasonal influenza spilt vaccine's immunogenicity and the 50% effective dose (ED50a) of hemagglutin (HA) that can make 50% of the mice hemagglutination inhibition antibody (HI) titers to 40.</p><p><b>METHODS</b>The 2008-2009 seasonal influenza spilt vaccine's two components, with HA from H1N1 and H3N2 influenza virus respectively, were used as a model. Mice were immunized once or twice with different doses, and the HI antibody titers were tested to determine the immunization procedure and to evaluate the immugenicity of seasonal influenza spilt vaccine in mice; Consequently, HI antibody response kinetics of the two components were observed to determine the time point when the HI antibody titer reached the peak point; Finally, mice were immunized with different doses of HA to evaluate the ED50a that can make 50% of mice HI titers reach 40.</p><p><b>RESULTS</b>Immunization procedures study showed that one-dose of seasonal influenza vaccine induced the HI antibody titers ranged from 10 to 120, while two-dose of influenza vaccine improved the HI antibody titer 10-100 times as compared with one dose; antibody kinetics study suggested that the time point of HI antibody produced to peak is 28-35 days post one dose immunization; and the ED50a detection results indicated that one dose of 1.5 microg HA could make 50% of the mice HI antibody titer reach 40.</p><p><b>CONCLUSION</b>Seasonal influenza spilt vaccine is very immunogenic in mouse; the time point of HI antibody produced to peak is 28-35 days post one dose immunization; and the ED50a of HA is 1.5 microg, which can make 50% of the mice HI titer reach 40. The experimental results provided foundation for the establishment of influenza vaccine evaluation system based on seasonal influenza vaccine.</p>

Development of serological detection assays for human coronavirus HKU1 infection and its application / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To express the nuclear capsid protein (N protein) and the spike protein (S protein) of HCoV-HKU1, and to develop the corresponding serum assay for antibody detection.</p><p><b>METHODS</b>The N protein of HCoV-HKU1 was expressed in E. Coli, anti-N antibody assay was established using Western Blotting with turn-based membrane. HCoV-HKU1 S protein was constructed in the eukaryotic expression plasmids, and confirmed by Western Blotting, S antibody assay was established using indirect immunofluorescence assay (IFA). We analyzed anti-S and anti-N antibody among 100 normal adult serum.</p><p><b>RESULTS</b>Expression of S and N protein were confirmed; 100 normal adult serum were analyzed using the established serological detection assay, in which HCoV-HKU1 S antibody positive rate was 47%, N antibody positive rate was 48%, Both S and N antibodies positive were 21%, Both S and N antibodies negative were 22%. Co-detection S and N antibody was achieved 74% positive rate.</p><p><b>CONCLUSION</b>The methods we established here could be used for serological analysis of HCoV-HKU1. Either detection of HCoV-HKU1 S or N antibodies achieved good results. Higher positive detection rate of anti-S or anti-N antibody was found in the normal adults.</p>

Uncommon characteristics of the structure and development of Trichosporon asahii / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Trichosporon asahii (T. asahii) is one of the most important pathogenic fungus in the genus of trichosporon. Although the species identification of T. asahii was based upon the complicated results of morphologic, biochemical and biologic examination, the morphology characteristic is still the first clue to the species. Some common structures of T. asahii had been described such as arthrofilaments and arthroconidia, but other important structures of T. asahii were unclear.</p><p><b>METHODS</b>Six strains of T. asahii were incubated on the slant and micro culture of Sabouraud's dextrose agar at 30 degrees C for 7 days. Samples were fixed using 2% paraformaldehyde and 2.5% glutaraldehyde. T. asahii was observed under scanning electron microscope and transmission electron microscope.</p><p><b>RESULTS</b>The detailed characteristics of the diverse sites of germination, as well as some uncommon structures such as giant cell, sarcinate, and club-shaped macroconidia, were presented. The pseudohyphae of T. asahii were noted to produce true hyphae, either along the longitude axis or on the flank. T. asahii was noted to have blastic and thallic conidiation. Digitated branches, trichoid structures and septa inside the spores were detected.</p><p><b>CONCLUSION</b>These results may add our knowledge to the structure and development of T. asahii.</p>

Pathogenicity of Trichosporon asahii in a murine model of disseminated trichosporonosis / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>In recent years, superficial and deep mycoses caused by trichosporon were occasionally reported. In 2001, we reported the first case of disseminated trichosporonosis caused by Trichosporon asahii (T. asahii) in China. In this study, the pathogenicity of T. asahii was investigated in a murine model of disseminated trichosporonosis.</p><p><b>METHODS</b>Seventy-five mice were randomly divided into 7 groups. Each group was inoculated with T. asahii, through intradermal, gastrointestinal tract or intravenous injection. The mice in the experimental groups were given an intraperitoneal injection of cyclophosphamide (CY) to induce granulocytopenia. Mice in the therapeutic group were given both liposomal amphotericin B and fluconazole. The main viscera of the mice were examined by means of tissue culture and pathologic sections.</p><p><b>RESULTS</b>In the two intravenous inoculation groups, T. asahii was isolated from at least one organ in 10 of the 12 granulocytopenic mice and 2 of the 14 immunocompetent mice. Two of the 7 mice in the granulocytopenia group presented with lesions in the inoculation position, but none of the 30 mice in the granulocytopenia and the control group which were inoculated intradermally or through the gastrointestinal tract had viscera infection. In the therapeutic group, the ratio of consequently dead mice, the number of involved viscera, and the incidence of systemic infection were significantly less than the untreated group. Acute purulent inflammation and granulomatous inflammation were the main pathological changes in the course of the infection. Arthrospores and filaments were found in the focus.</p><p><b>CONCLUSIONS</b>T. asahii is an opportunistic pathogen that causes cutaneous and visceral infections in immunologically impaired hosts. An immunocompetent host was to be infected by the invading T. asahii. Several organs, namely the liver, lungs, kidneys, spleen and heart, were predisposed. The therapy of combining liposomal amphotericin B with fluconazole can prevent the host from an infection and inhibit the diffusion of the infection.</p>

Expression of influenza A3 virus (H3N2) M2 gene in vaccinia virus Tiantan strain / 病毒学报

To construct a recombinant vaccinia virus RVJ1175M2 expressing influenza A3 virus (H3N2) M2 gene, full length gene encoding influenza virus (H3N2) M2 protein was amplified with PCR and cloned into plasmid pJSC1175 which was used for homologous recombination with vaccinia virus Tiantan strain. Along with this, a recombinant vaccinia virus RVJ1175M2 containing the M2 gene was subsequently constructed. It was identified by PCR that the gene of M2 protein was inserted into the TK locus of vaccinia virus Tiantan strain correctly and M2 protein was expressed by recombinant vaccinia virus RVJ1175M2 effectively. Two electrophoretic bands of M2 protein expressed by the infected HeLa cells, one of 15kD and the other of 13kD in accordance with related documents, was deteced by Western-blot. M2 protein distributing on the surface of the infected cells was demonstrated by immunofluorescence and flow cytometry. The results suggested that recombinant vaccinia virus RVJ1175M2 could express M2 protein effectively, this laid a foundation for comparative research on the immune effect of universal vaccine of influenza virus with different kinds of vaccine expressing M2 protein.

Clinical study of shenqi fuzheng injection and chemotherapy in CHOP protocol in treating malignant lymphoma / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To compare the efficacy and adverse reaction of chemotherapy in CHOP protocol (CT-CHOP) alone or compared with Shenqi Fuzheng injection (SFI) for treatment of moderate malignant non-Hodgkin's lymphoma.</p><p><b>METHODS</b>Sixty patients were divided into 2 groups, the treated group (n = 32) treated with CT-CHOP plus SFI for 5.7 cycles on average and the control group (n = 28) treated with CT-CHOP alone for 5.6 cycles on average.</p><p><b>RESULTS</b>In the treated group, 18 patients were completely remitted (CR), 4 were partially remitted (PR), 7 were unchanged (NC), 3 were progressively deteriorated (PD), with the total remission rate of 68.8%, while in the control group, 13 were CR, 4 PR, 7 NC and 4 PD, the total remission rate being 60.7%. After treatment, the levels of CD3, CD4 and CD4/CD8 increased and CD8 decreased significantly in the treated group (P <0.05). Patients' quality of life (QOL) in the treated group was improved more obviously than that in the control group (P < 0.01), and the incidence rate of adverse reaction as leucopenia, neurotoxicity, and cardiac toxicity were lower in the treated group than those in the control group (P<0.01).</p><p><b>CONCLUSION</b>Shenqi Fuzheng injection combined with CT-CHOP on malignant non-Hodgkin's lymphoma can reduce the adverse reaction of chemotherapy, ameliorate the compliance of patients to chemotherapy, and improve the immune function and QOL of patients.</p>

Follow-up efficacy of integrative Chinese and Western drugs on localized scleroderma with vitamine B6 and Xuefu Zhuyu decoction / 中国结合医学杂志

<p><b>OBJECTIVE</b>To investigate the therapeutic effects of vitamine B(6) (Vit B(6)) and Xuefu Zhuyu Decoction (XFZY, for activating blood circulation to remove stasis) in patients with localized scleroderma(LSD).</p><p><b>METHODS</b>Thirty-three patients were treated with XFZY and Vit B(6), with 15 cases taking orally prednisone acetate and 20 healthy volunteers as the control. Their level of soluble interleukin-2 receptor (sIL-2R) and tumor necrosis factor-alpha (TNF-alpha) in the patients with LSD before and after treatment were observed.</p><p><b>RESULTS</b>The level of sIL-2R and TNF-alpha in the serum from the patients with LSD were higher than those of healthy volunteers (P < 0.01). After treatment with Vit B(6) and XFZY, the level of sIL-2R and TNF-alpha from the patients with LSD decreased significantly (P < 0.01), but there were no difference between the group taking Vit B(6) plus XFZY and the group given prednisone.</p><p><b>CONCLUSION</b>The activating blood circulation to remove stasis approach in treating LSD with integrative Chinese and Western drugs got better results, and metabolic disorder of tryptophan might be correlated with the etiology of LSD.</p>