Both innate and adaptive immunity contribute to the pathogenesis of ischemia-reperfusion injury (IRI).During acute phase of kidney IRI,kidney endothelial cells promote inflammation after IRI by increasing adhesion molecule expression and vascular permeability,and tubular epithelial cells increase complement C3 binding and Toll-like receptor 2 and Toll-like receptor 4 expression.Early activation of kidney dendritic cells initiates a cascade of events leading to accumulation of neutrophils,macrophage,natural killer cells,CD4 + T cells and B cells in the early phase of renal IRI.Soluble components of the immune system,such as complement activation production,cytokines and chemokines,also are implicated in the injury and repair of post-ischemic kidneys.Foxp3 + regulatory T cells and alternatively activated macrophage participate in attenuating the inflammation and initiating the repair of kidney IRI,while B lymphocytes limit repair of kidney IRI.

Objective To observe the ultrastructure of dimorphic Penicillium marneffeiisolates from wild bamboo rats (Rhizomys pruinosus) in Guangxi region as well as from a patient with penieilliosis marneffei,and to compare their biological characteristics and anti-oxidative mechanisms.Methods Two Penicillium marneffei strains,including one isolated from wild bamboo rats (Rhizomys pruinosus) in Guangxi region and one from a patient with penicilliosis marneffei,were cultured with or without the presence of 2.0 mmol/L hydrogen peroxide in potato dextrose agar (PDA) at 25 ℃ and in brain-heart infusion (BHI) broth at 37℃ for seven days.The shape of colony and growth of both strains were observed.Light microscopy was carried out to study the morphology,and transmission electron microscopy to observe the ultrastructure,of both isolates.Results Ater incubation with hydrogen peroxide,there was a slowdown in the growth of both Penicillium marneffei isolates at both mycelial phase and yeast phase,with an increase in the production of pigment at mycelial phase at 25℃.No obvious changes were observed at 37 ℃ in the morphology of either the clinical isolate or the bamboo rat isolate when cultured with hydrogen peroxide compared with those cultured without hydrogen peroxide.Light microscopy showed attenuated spore formation by the clinical isolate when cultured at 25 ℃ with hydrogen peroxide,crenation of both isolates when cultured at 37 ℃ with hydrogen peroxide.Under a transmission electron microscope,the mycelial cells of both isolates exhibited smooth cell walls,intact cell membranes,with nuclei,mitochondria,endoplasmic reticulum,lipid body,vacuoles of various sizes in the cytoplasm at 25 ℃,and even microbodies at 37 ℃,when cultured without the presence of hydrogen peroxide.After incubation with hydrogen peroxide,the cell wall of both isolates became incomplete with defects in some areas and uneven thickness,the cell membrane discontinuous with shrinkages and projections,and the cytoplasm was inhomogeneous with obvious phagocytosis and numerous phagocytic vacuoles.Conclusions The clinical and bamboo rat isolates of Penicillium marneffei experience different biological and morphological changes under oxidative stress,hinting differences in antioxidative mechanism between them.

OBJECTIVE:To provide reference for drug consultation of Chinese patent medicine(CPM)in pregnancy. METH-ODS:Package inserts of CPM in our hospital during Jan.-Jun. 2016 were collected. Referring to the prohibited,contraindicated and caution materials and decoction pieces in Chinese Pharmacopoeia(part 1,2015 edition),based onnoteitem in Chinese Pharma-copoeia and Clinical Application Guidelines(2010 edition),problems existing in pregnancy contraindication labeling of package in-serts were compared and analyzed. RESULTS:There were 99 kinds of prohibited,contraindicated and caution materials and decoc-tion pieces in Chinese Pharmacopoeia. There were 210 package inserts of CPM except for the special medicine for children,in which 32 contained prohibited materials,61 contained caution materials,only 21 were in line with the contained materials. Among the package inserts of 93 CPM containing prohibited or caution materials,27 were included in Chinese Pharmacopoeia,13 in Clini-cal Application Guidelines only,17 in both,but only 6 had the same contraindication labeling. Among the package inserts of 32 CPM containing prohibited materials,6 were explicitly labeled prohibited,17 labeled contraindicated or caution,and 9 labeled none. Among the package inserts of 61 CPM containing caution materials,29 were labeled prohibited or contraindicated,15 la-beled caution,and 17 labeled none. Among the package inserts of 117 CPM containing no prohibited,contraindicated or caution materials,8 were labeled contraindicated in pregnancy,and 18 labeled prohibited in pregnancy. CONCLUSIONS:The pregnancy contraindications of most CPM are not normative,showing poor consistency with Chinese Pharmacopoeia or Clinical Application Guidelines. Except for providing drug consultation by complying with Chinese Pharmacopoeia,Clinical Application Guidelines and package insert,pharmacists can judge the CPM without labeled pregnancy contraindication by analyzing its classification of con-tained materials. Using TCM does not indicate safety drug use,in addition,some CPM contain western medicine ingredients. There-fore,pharmacists should conduct medication education for patients who used CPM in pregnancy. Considering the new and severe adverse reactions of TCM injections are more,its adverse reactions exist unpredictability,so that pregnant patients should be sug-gested to avoid using TCM injections by pharmacists.

Obective To evaluate the effects of dihydrotestosterone (DHT) on the expression of sterol regulatory element-binding protein-1c (SREBP-1c) in human HaCaT keratinocytes.Methods HaCaT cells were cultured in vitro and classified into 4 groups,i.e.,control group receiving no treatment,DIIT group treated with 3 different concentrations (10,100,1000 nmol/L) of DHT,LY294002 plus DHT group treated with DHT of 100 nmol/L after 40-minute pretreatment with the PI3K inhibitor LY294002 of 50 μmol/L,PD98059 plus DHT group treated with DHT of 100 nmol/L after 40-minute pretreatment with the MEK inhibitor PD98059 of 50 μmol/L.After another 24-hour culture,real time PCR and Western blot were carried out to detect the expression of SREBP-1c mRNA and protein in HaCaT cells,respectively.Western blot was also performed to determine the phosphorylation levels of protein kinase B (AKT),extracellular signal-regulated kinase (ERK),p38 mitogen activated protein kinase and c-Jun N-terminal kinase (JNK) in the HaCaT cells.Results DHT could enhance the expression of SREBP-1c mRNA and protein in HaCaT cells in a concentration-dependent manner,and induce the phosphorylation of AKT and ERK,but not that of P38 or JNK.The expressions of SREBP-1c mRNA and protein were significantly decreased in HaCaT cells treated with LY294002 plus DHT (7.4780 ± 1.2638 vs.21.6170 ± 2.2759,t =9.406,P ＜ 0.05; 0.7113 + 0.0313 vs.2.2577 + 0.0601,t =39.498,P ＜ 0.05),but experienced no statistical changes in those treated with PD98059 and DHT(both P ＞ 0.05),compared with those treated with DHT only.Conclusion DHT can induce the expression of SREBP-1c mRNA and protein in HaCaT cells,likely via the PI3K/AKT signaling pathway.

Objective:To explore the involvement of endoplasmic reticulum molecular chaperone GRP78 in the impairment of inner ear consistented with the mimetic aging model.Method:Twenty-four Wistar rats were randomly divided into two groups. model group was in duced by daily hypodermic injection of 10% D-galactose (800 mg·kg~(-1)·d~(-1)) for 8 weeks and the control group was given saline accordingly. Spatial learning and memory was measured by Morris-Water-Maze. Colorimetry was used to analyze superoxide dismutase (SOD) and malondialdehyde (MDA) extracted from inner ear tissue. Hearing threshold of rats were detected with Auditory brainstem response (ABR).In addition, expression of GRP78 in the inner ear was detected by immunohistochemistry,RT-PCR and Western blot. The control group was studied parallel.Result:The escape latency in the model group injected with D-galactose was markedly longer than that in the control group.accordingly ,the changes of SOD and MDA were more significant in the model group, the difference between two groups was significant(t-test,P<0.01). the variation of ABR in two groups was observed, There was no statistically difference of the hearing in the model group compared with the control group(P>0.05). The expression of GRP78 was significantly different between two groups ,which is increased in the inner ear tissue of model group(P<0.01).Conclusion:The impairment of inner ear tissue partly dued to the oxidative stress in the model, which was induced by D-galactose.and endoplasmic reticulum molecular chaperone was thought to contribute to the impairment mechanism of inner ear in mimetic aging model.

ObjectiveTo observe the effect of topical sulfotanshinone sodium(STS) on sebaceous hyperplasia in animal models. MethodsThe sebaceous gland spots of adult male Syrian hamster flank organ served as the animal model. Sulfotanshinone sodium(0.5％) was applied to sebaceous gland spots in the right flank organ thrice daily, while those in the left were treated with normal saline as control. Parameters were examinedbefore, 10 days, 20 days and 30 days after the beginning of the topical treatment. A vernier caliper was utilized to measure the size of sebaceous gland spots, hematoxylin and eosin(HE) staining to observe the structure of sebaceous glands, immunohistochemistry to determine the expression of proliferating cell nuclear antigen (PCNA) in sebaceous gland cells, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay to assess the apoptosis of sebaceous gland cells. ResultsAt the baseline, no significant difference was observed in the size of sebaceous gland spots or in the proliferation and apoptosis of sebaceous gland cells between the two sides of flank organ(all P ＞ 0.05), with tightly arranged intact sebaceous glands. Compared with normal saline, sulfotanshinone sodium significantly reduced the size of sebaceous gland spots(P ＜ 0.05). Sebaceous glands were loosely arranged with decreased quantity and volume and obviously atrophic on day 30 in the right flank organ of hamsters. A decrease was observed in the expression of PCNA in sulfotanshinone sodium treated sebaceous gland cells compared with those treated with normal saline(P ＜ 0.01 ), which was more striking on day 10 and 20(both P ＜ 0.005). Sulfotanshinone sodium also induced an enhancement of apoptosis in sebaceous gland cells (P ＜ 0.01 ), which was more apparent on day 20 (P ＜ 0.005 ), and the degree of apoptosis was higher in the central area than in the peripheral area of sebaceous glands. ConclusionSulfotanshinone sodium can reduce the size and alter the microstructure of sebaceous gland spots, and inhibit the hyperplasia of sebaceous glands.

Objective To investigate the influence of Zhenqing Recipe(ZQR)and Ligustri Lucidi Fructus(LLF)on diabetic rats and its possible mechanism.Methods The model of type 2 diabetic rats was established by feeding a high-sucrose-high-fat diet and injecting a low dose of Streptozotocin in Wistar rats.The model rats were randomly divided into three groups: diabetic model,ZQR-treated,and LLF-treated groups for 8-weeks treatment.The normal Wistar rats were as a normal control group.Results The level of fasting blood glucose in ZQR and LLF groups was decreased compared with model group(P < 0.01,0.05,respectively).Both ZQR and LLF markedly reduced serum triglycerides(P < 0.01,0.05,respectively),and increased the insulin sensitivity index(P < 0.05).Histopathology revealed that ZQR and LLF reduced pancreatic damage.Immunohistochemistry evaluation showed that the percentage of insulin positive cells in pancreatic island was higher than model group(P < 0.01,0.05,respectively).The mRNA and protein expression of SREBP-1c in pancreas were significantly decreased in ZQR and FLL group(P < 0.01).Conclusion ZQR has therapeutic effect on type 2 diabetes,it ameliorates the histopathologlcal changes of pancreas,protects β cells,improves insulin resistance,and attenuates the expression of SREBP-1c.This study also provides the anti-diabetic evidence of FLL even its effects are weaker than ZQR.

Objective To evaluate the in vitro antifungal activity of osthole against Talaromyces marneffei (TM) in yeast phase,in order to provide an experimental reference for the clinical treatment of TM infection with Chinese medicine.Methods There were 20 TM strains,including 1 standard strain,2 fluconazole-spontaneously resistant strains,11 clinical isolates,and 6 isolates from wild bamboo rats.A microdilution method was used to prepare 96-well antifungal sensitivity test plates containing osthole,fluconazole,amphotericin B,itraconazole and voriconazole at different concentrations,which were incubated with (1-5) × 103 CFU/ml of tested TM strain suspensions at 37 ℃ for 48 hours.Meanwhile,TM strains cultured in the media without antifungal drugs served as positive (growth) control group,and culture media served as negative group.The minimum inhibitory concentrations (MICs) of antifungal drugs against yeasts were determined using the Clinical and Laboratory Standards Institute (CLSI) broth microdilution susceptibility method (M27-A2 Document).Fluconazole MIC was defined as the lowest drug concentration that resulted in ≥ 80％ growth inhibition,and MICs of other antifungal drugs were the lowest drug concentrations that resulted in 100％ growth inhibition,compared with growth control wells.Results The MICs among the quality control strains were all within the reference range,and TM grew well in the positive control wells.The MIC ranges of fluconazole,amphotericin B,itraconazole and voriconazole against TM strains were 2.0-8.0 mg/L,1.0-4.0 mg/L,0.03-0.25 mg/L and 0.06-0.25 mg/L respectively,and the MIC of fluconazole against fluconazole-spontaneously resistant strains was 128 mg/L.The MICs of osthole against the TM standard strain (FRR2161),fluconazole-spontaneously resistant strains and 1 isolate from wild bamboo rats were 16,32 and 128 mg/L respectively,and the MIC range of osthole against other 16 TM strains was 16-64 mg/L.The MICs of osthole at which 90％ and 50％ of the TM strains were inhibited were 64 and 32 mg/L respectively.Conclusion Osthole exhibits the antifungal activity against the yeast form of TM.

OBJECTIVE: To explore the involvement of endoplasmic reticulum molecular chaperone GRP78 in the impairment of inner ear consistent with the mimetic aging model. METHOD: Twenty-four Wistar rats were randomly divided into two groups. Model group was induced by daily hypodermic injection of 10% D-galactose (800 mg x kg(-1) x d(-1)) for 8 weeks and the control group was given saline accordingly. Spatial learning and memory was measured by Morris-Water-Maze. Colorimetry was used to analyze superoxide dismutase (SOD) and malondialdehyde (MDA) extracted from inner ear tissue. Hearing threshold of rats were detected with Auditory brainstem response (ABR). In addition, expression of GRP78 in the inner ear was detected by immunohistochemistry, RT-PCR and Western blot. The control group was studied parallel. RESULT: The escape latency in the model group injected with D-galactose was markedly longer than that in the control group. Accordingly, the changes of SOD and MDA were more significant in the model group, the difference between two groups was significant (t-test, P<0.01). the variation of ABR in two groups was observed, There was no statistically difference of the hearing in the model group compared with the control group (P>0.05). The expression of GRP78 was significantly different between two groups, which is increased in the inner ear tissue of model group (P<0.01). CONCLUSION The impairment of inner ear tissue partly dued to the oxidative stress in the model, which was induced by D-galactose and endoplasmic reticulum molecular chaperone was thought to contribute to the impairment mechanism of inner ear in mimetic aging model.
Aging ; Animals ; Female ; Galactose ; metabolism ; Heat-Shock Proteins ; metabolism ; Rats ; Rats, Wistar

Objective:To investigate the epidemiological characteristics and late diagnosis of suspected occupational diseases in Guangzhou from 2006 to 2018.Methods:The cases of suspected occupational diseases reported in Guangzhou from January 1, 2006 to December 31, 2018 were collected and followed up to the end of 2018. The cases of suspected occupational diseases were analyzed statistically.Results:A total of 1502 suspected occupational cases were reported in Guangzhou from 2006 to 2018, including suspected occupational otorhinolaryngological and oral diseases (58.59%, 880/1502) , suspected occupational chronic poisoning (25.03%, 376/1502) and suspected occupational pneumoconiosis (11.72%, 176/1502) . The key reporting areas were Huangpu District (27.50%, 413/1502) and Panyu District (20.91%, 314/1502) . The key reporting industries were manufacturing industry (80.36%, 1207/1502) , among which railway, ship, aerospace and other transportation equipment manufacturing industry (13.26%, 160/1207) , automobile manufacturing industry (12.51%, 151/1207) and general equipment manufacturing industry (10.19%, 123/1207) were the main industries. The main type of reported economy was private economy (39.95%, 600/1502) . The scale of the key reporting enterprises was medium and small-sized enterprises (31.09%, 467/1502 and 34.62%, 520/1502) . As of December 31, 2018, 263 cases were diagnosed with occupational diseases, and the diagnosis rate was 17.51%.Conclusion:The number of suspected occupational diseases reported in Guangzhou from 2006 to 2018 is large, and the overall diagnosis rate of suspected occupational diseases is low. It is necessary to strengthen the supervision and management of key diseases, key regions, and key industries of suspected occupational diseases. It is suggested that the reporting system of suspected occupational diseases should be standardized as soon as possible.