The latest results from our research group in the biotransformation of triptolides and bufadienolides were reviewed. The trends in the development of biotransformation in the future were also briefly discussed.

Objective To explore the effects of proteasome inhibitor bortezomib alone and in combination with chemotherapeutic agents in acute leukemia cell line HEL. Methods Tumor cell growth inhibition and apoptosis was measured by MTT assay and FACS analysis, respectively. Apoptosis- and cell cycle-associatd protein expression levels were measured by Western blotting assay. Results Bortezomib induced the suppression of tumor cell growth and apoptosis in a dose-dependent manner with an inhibitor concentration IC50 values 7.15 nmol/L in acute leukemia cell line HEL. Further combination treatment with doxorubicin or cytarabine increased tumor cell growth suppression in acute leukemia cell line, as compared to single drug treatment alone. Bortezomib caused an increase in G2/M in a time-dependent manner. Bortezomib alone and in combination with chemotherapeutic agents treatment increased the bax and p27 expression and decreased the bcl-2 expression even without influencing p53 expression levels. Conclusion Bortezomib may be an effective therapeutic drug for patients with acute leukemia. Combining bortezomib with doxorubicin might be more effective for displaying tumor cell growth inhibitor effects in acute leukemia cells through regulation of bcl-2, bax and p27 proteins and independent of p53 status.

AIM: To investigate the effects of amniotic membrane transplantation combined with limbal stem cell autograft transplantation on ocular surface repair time, repair rate and complications in patients with ocular burns.

METHODS: The clinical data of each 61 cases(61 eyes)of patients with ocular burns who were treated by limbal stem cell autograft transplantation(control group)or amniotic membrane transplantation combined with limbal stem cell autograft transplantation(observation group)were retrospectively analyzed. The postoperative ocular surface repair rate, repair time, and visual acuity and complications(symblepharon, corneal neovascularization, and keratohelcosis)at 12wk after operation were recorded in the two groups, and the levels of cytokines \〖vascular endothelial growth factor(VEGF), transforming growth factor-β1(TGF-β1), insulin-like growth factor-1(IGF-1)\〗 were compared between the two groups before operation and at 2wk after operation.

RESULTS: The postoperative ocular surface repair rate in observation group was higher than that in control group(P<0.05)while the repair time was less than that in control group(P<0.05). At 12wk after operation, the visual acuity in observation group was significantly better than that in control group(P<0.05), and the total incidence rate of postoperative complications in observation group was significantly lower than that in control group(P<0.05). At 2wk after operation, the levels of serum VEGF, TGF-β1 and IGF-1 in the two groups were significantly higher than those before operation(P<0.05), and the levels in control group were higher than those in observation group(P<0.05).

CONCLUSION: Amniotic membrane transplantation combined with limbal stem cell autograft transplantation has significant treatment effects on patients with ocular burns, and it can promote ocular surface repair, improve postoperative visual acuity, and can also regulate corneal neovascularization, and it also has positive significance in reducing the risk of postoperative complications.

BACKGROUND:At present, there are a number of articles about hypothermic machine perfusion versus static cold storage of kidney alografts; however, the conclusions are various. Furthermore, due to the limitation of single sample size, there is a lack of objective evaluation on the merits and demerits of hypothermic machine perfusion. OBJECTIVE: To compare the prognostic outcomes of hypothermic machine perfusion and static cold storage of kidney alografts. METHODS: A computer-based search of PubMed, sinoMed, EMbase, Web of Science, the Cochrane Central Register of Controled Trials (CENTRAL), Wanfang and CNKI databases were searched from their establishment to March 4, 2015 to screen the randomized controled trials (RCTs) about hypothermic machine perfusion versus static cold storage for kidney transplantation. Meanwhile, the references of included RCTs were also searched by hand. After study selection, RCTs screening, data extraction and quality assessment were conducted by two reviewers independently. Meta-analyses were performed by using the RevMan5.3.0 software. The quality of evidence was assessed by using the GRADEpro3.6 software. RESULTS AND CONCLUSION: Six articles were included, involving 619 cases undergoing hypothermic machine perfusion and 620 cases undergoing static cold storage. The results of Meta-analyses showed that the incidence of primary graft non-function, incidence of delayed graft function of functional kidney alografts, and incidence of delayed graft function were significantly lower in the hypothermic machine perfusion group than the static cold storage group (P < 0.05 or 0.01). There were no differences in the 1-year recipient survival rate and 1-year alograft survival rate between the two groups (P > 0.05). These findings indicate that the hypothermic machine perfusion only can reduce the incidence of postoperative complications to maintain the function of kidney, but cannot improve the 1-year recipient survival rate and 1-year alograft survival rate. Hypothermic machine perfusion has no advantage on the long-term preservation of donor organ compared with the static cold storage.

·AIM: To analyze the clinical efficacy and safety of vitrectomy combined with cyclophotocoagulation in the treatment of traumatic glaucoma, and to provide an effective treatment for improving the quality of life of patients with traumatic glaucoma. ·METHODS:Totally 90 patients (90 eyes) with traumatic glaucoma admitted in our hospital from January 2011 to July 2016 were divided into two groups (45 patients in each group) according to different treatment methods. The patients in the observation group underwent vitrectomy combined with cyclophotocoagulation under direct vision; the control group underwent vitrectomy combined with trans-scleral cyclophotocoagulation. We observed the effect of different treatment on visual acuity, intraocular pressure and complication of the two groups. ·RESULTS: The visual acuity of the observation group was significantly better than that of the control group after treatment (Z=-5.689, P<0.05). There was no significant difference on intraocular pressure between the two groups before treatment (P>0. 05). The change of decreased intraocular pressure in the observation group was less than that in the contral group after operation (P<0.05). After 1a follow-up,there was no significant difference on the change of decreased intraocular pressure between the two groups (P>0. 05). The complications of the two groups after treatment were vitreous hemorrhage, choroidal detachment, low intraocular pressure, increased intraocular pressure and other complications, but the complication rate of two groups were no different (x2=1.553,P=0.213).· CONCLUSION: Vitrectomycombinedwith cyclophotocoagulation under direct vision brings patients better visual acuity than that combined with trans-scleral cyclophotocoagulation.

Abstract: Objective To investigate the epidemiological characteristics of pathogens causing bloodstream infection in hematology patients during treatment and to compare the effects of allogeneic hematopoietic stem cell transplantation (HSCT) on them, so as to provide evidence for the diagnosis and treatment of bloodstream infection. Methods A total of 292 cases with bloodstream infection in hematology wards of the PLA General Hospital were collected from 2017 to 2021, which were divided into HSCT group and N-HSCT group according to whether performed HSCT or not. The epidemiological characteristics and influence of pathogenic bacteria in blood stream infection were analyzed and compared between the two groups. Results A total of 362 strains of pathogenic bacteria were collected from 292 cases, including 106 strains in HSCT group (84 cases) and 256 strains in N-HSCT group (208 cases). Bloodstream infections were more common in acute myeloid leukemia (130/392, 44.52%), followed by non-Hodgkin's lymphoma (74/292, 25.34%). The rate of once bloodstream infection in HSCT group was higher than that in N-HSCT Group, but the rate of twice bloodstream infections in N-HSCT group was higher. Gram-negative Bacilli were the most common pathogens (56.08%), with Escherichia coli being absolutely dominant (109/362, 30.11%), followed by Klebsiella pneumoniae (39/362, 10.77%). Coagulase-negative staphylococci (CoNS) (107/362, 29.56%) were the most common Gram-positive cocci. The detection rate of fungi in HSCT group (10/106, 9.43%) was significantly higher than that in N-HSCT Group (3.52%). The drug resistance rate of the common pathogenic bacteria was at a high level, and there was a certain proportion of multi-drug resistant strains (except for Pseudomonas aeruginosa). The resistance rates of CoNS to penicillin, gentamicin, moxifloxacin, clindamycin and rifampicin in HSCT group were higher than those in N-HSCT Group. The resistance rate of Escherichia coli to piperacillin/tazobactam, cephalosporins and etapenem in HSCT group was significantly higher than that in N-HSCT group. Conclusions The pathogens of blood stream infection in hematology patients are complicated and various. It is difficult for clinical diagnosis and treatment to detect multiple infections and multiple pathogens. HSCT patients have a higher risk of fungal bloodstream infection and more multi-drug resistant strains detected. Therefore, the identification of bloodstream infection and multi-drug resistant strains associated with HSCT patients should prompt surveillance.

OBJECTIVETo investigate whether S. aureus could activate NF-κB signaling pathway in human osteoblasts.

METHODSImmunoblot and electrophoretic mobility shift assay were used to detect the degradation of I-κBα and activation of NF-κB in human osteoblasts following infection with S.aureus, respectively, and there were investigated the activated state of NF-κB signaling pathway in human osteoblasts. In addition, enzyme-linked immunosorbent assay was used to measure the secretion of IL-6 in culture supernatants, which was represented as one of important cytokines in osteomyelitis, and an inhibitor of NF-κB, SN50, which was added to human osteoblasts culture prior to 1 hour at 50 µmol/L before the infection of S.aureus, was used to determine whether S.aureus-activated NF-κB signaling pathway regulates IL-6 secretion of human osteoblasts.

RESULTSS.aureus could induce the degradation of I-κBα (I-κBα(15 min)/I-κBα(0 min) = 0.409 ± 0.245 and I-κBα(30 min)/I-κBα(0 min) = 0.061 ± 0.010) and activation of NF-κB in human osteoblasts in a time and dose-dependent manner following infection. In addition, the secretion of IL-6 in the supernatants of human osteoblasts ((2.17 ± 0.11) µg/L) was suppressed by 50 µmol/L SN50 compared to without the addition of SN50 ((3.58 ± 0.31) µg/L) (F = 174.25, P < 0.05).

CONCLUSIONSS.aureus could activate NF-κB signaling pathway in human osteoblasts, which could regulate cytokines secretions of human osteoblasts.

Cells, Cultured ; Humans ; Interleukin-6 ; secretion ; NF-kappa B ; metabolism ; Osteoblasts ; metabolism ; Signal Transduction ; Staphylococcal Infections ; metabolism

An adjustable folding mount is presented in this paper. It is a multi-functional device for one or more patient's infusions, continuous traction and functional training, and life nursing etc.
Equipment and Supplies ; Fluid Therapy ; instrumentation ; Humans ; Nursing Care ; Traction ; instrumentation

Objective To investigate the clinical effects of microinvasive revision surgery on the patients of the fibrotic filtering bleb with the guidance of ultrasound biomicroscopy (UBM).Methods A prospective,nonrandomized clinical controlled trial was conducted,which had 2 groups according to the results from UBM during the same period in our hospital,including the patients with the microinvasive revision surgery (28 patients of 28 eyes,group A) and the in-situ traditional revision surgery of larger incision (27 patients of 27 eyes,group B).The clinical data of the patients were collected and the main observation targets were the change of the postoperative visual acuity (VA),intraocular pressure (IOP),the operation success rate and the complications.Results There were no significant differences in the gender,age,glaucoma types,primary operation modes,postoperative follow-up time and preoperative VA (all P ＞0.05).The average duration of hospital stay,postoperative VA and the postoperative complications of group A were better than those of group B and the differences were statistically significant (all P ＜ 0.05).There was no significant difference in IOP at different time points between the two groups (all P ＞ 0.05).The operative successful rates of the two groups were 64.3％ and 66.6％,respectively(P ＞ 0.05).Conclusion The in-situ microinvasive revision surgery on the basis of the UBM examination is a good choice for patients with the fibrotic filtering bleb of the unlocked inner passageway in the filter aisle and a latent liquid dark cavity that is interlinked with the anterior chamber under the scleral flap or the liquid dark cavity of the capsule.

Meckel's diverticulum is the most common congenital anomaly of the gastrointestinal tract,affecting approximately 2％ of the population.It is a true diverticulum occurring on the anti-mesenteric border of the distalileum,typically within 100 cm of the ileo-caecal valve.Neoplasms arising in Meckel's diverticula are uncommon,and those reported in the literature are mainly carcinoid tumors,followed by gastrointestinal stromal tumors (GIST) and benign leiomyomas.Adenocarcinomas are extremely rare.Tumors in Meckel's present non-specifically with gastrointestinal complaints,such as bleeding,obstruction,inflammation or perforation.The suspicion of a Meckel's tumor is often not thought of at the initial.In this article we describe a 57-year-old woman who presented with massive rectal bleeding and severe anemia,later found to be caused by a adenocarcinoma arising from Meckel's diverticulum.The tumor was unfortunately highly aggressive.Multiple liver metastases had already existed when we discovered the primary mass.Later we performed a partial resection of the ileumto cease the bleeding.Meckel's diverticulum and the tumor were resected simultaneously.The pathological diagnosis confirmed adenocarcinoma arising from the Meckel's diverticulum.The final stage was pT4NxM1,stage Ⅳ according to the Union for International Cancer Control (UICC) classification.After operation we gave the patient firstline,mFOLFOX6 chemotherapy,but it turned out to be not effective.Rapid progress of the liver metastases and suspicion of multiple lung metastasis in short time after therapy indicated a bad outcome.We believe this is the first case of adenocarcinoma in a Meckel's diverticulum to be reported in domestic literature.The diagnosis of Meckel's tumor should be considered as inpatients' acute gastrointestinal complaints;when found incidentally at laparotomy,it should be carefully examined for any gross abnormality and resection should be considered.