1
|
Li LJ, Peng CY, Li ZY, Liu P, Yan CL, Zhao ZT. [Analysis on epidemiological characteristics of allergens with allergic skin diseases in a hospital in Beijing City from 2017 to 2021]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:2188-2195. [PMID: 38186175 DOI: 10.3760/cma.j.cn112150-20230825-00122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Objectives: In order to provide valuable information for the diagnosis and treatment of dermatitis, the prevalence rate and trend changes of common allergens in patients with allergic skin diseases in Beijing City were investigated and analyzed. Methods: This study was a retrospective data collection study. A total of 2 822 patients diagnosed with moderate to severe atopic dermatitis with allergen examinations were collected from Peking University First Hospital from 2017 to 2021, most of them were adults, and 83%(2 340/2 822) were over 18 years old. The ImmunoCAP fluorescent enzyme-linked immunoassay system was used to quantify specific IgE. The positive rate of each allergen was counted according to age, gender and year. The epidemiological characteristics and trends were analyzed. Results: In the past five years, 22 503 allergen-specific IgE test data were collected, and the positive rate of allergens in 40%(1 122/2 822) of the 2 822 patients was mainly multiple sensitization, the positive rate of allergens and multiple sensitization rates were the highest in people aged 13-18 years old. The 2 822 patients were dominated by inhaled allergens, and the highest positive rate was inhaled mixture (29.3%). The top five positive rates of inhaled allergens were Dermatophagoides farina (26.7%), Dermatophagoides pteronyssinus (25.5%), Mugwort (23.9%), Birch pollen (19.2%) and Siberian cocklebur (18.2%). The top five positive rates of food allergens were shrimp (15.2%), peanut (14.8%), sesame (14.7%), wheat (13.2%) and milk (13.1%). Analysis of the positive rate of allergens in different age groups showed except for the positive rate of birch pollen peaked at 3-12 years old, other inhaled allergens were the highest food allergens in 13-18 years old. Among food allergens, the positive rates of fx5, milk, egg and wheat were the highest in <3 years old, the positive rate decreased gradually with age, and the positive rate of other food allergens peaked at 13-18 years old, and the shrimp and crab was the highest in adult. The positive rate of various allergens in the 2 822 patients showed little difference between male and female and the male was slightly higher than female. In the past five years, the positive rate of allergens has been on the rise. The changes of inhaled allergens in cat/dog hair dander, Dermatophagoides farina and cicadas were large, while the positive rate of food allergens was stable. Conclusions: The etiology of the allergic skin diseases is complex, which may be related to allergen exposure, heredity, immunity, environmental factors, abnormal skin barrier function, etc. This study showed the distribution of allergens in patients with allergic skin diseases in Beijing City to a certain extent. It provided epidemiological data and clinical evidence for the prevention and treatment of allergic diseases.
Collapse
Affiliation(s)
- L J Li
- Department of Clinical Laboratory, Peking University First Hospital, Beijing 100034, China
| | - C Y Peng
- Department of Dermatology and Venereology, Peking University First Hospital, National Clinical Research Center for Skin and Immune Diseases, Beijing 100034, China Peking University School of Nursing, Beijing 100191, China
| | - Z Y Li
- Department of Clinical Laboratory, Peking University First Hospital, Beijing 100034, China
| | - P Liu
- Department of Clinical Laboratory, Peking University First Hospital, Beijing 100034, China
| | - C L Yan
- Department of Clinical Laboratory, Peking University First Hospital, Beijing 100034, China
| | - Z T Zhao
- Department of Dermatology and Venereology, Peking University First Hospital, National Clinical Research Center for Skin and Immune Diseases, Beijing 100034, China
| |
Collapse
|
2
|
Zheng KX, Yuan SL, Dong M, Zhang HL, Jiang XX, Yan CL, Ye RC, Zhou HQ, Chen L, Jiang R, Cheng ZY, Zhang Z, Wang Q, Jin WZ, Xie W. Dihydroergotamine ameliorates liver fibrosis by targeting transforming growth factor β type II receptor. World J Gastroenterol 2023; 29:3103-3118. [PMID: 37346154 PMCID: PMC10280794 DOI: 10.3748/wjg.v29.i20.3103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/01/2023] [Accepted: 04/24/2023] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND The transforming growth factor β (TGFβ) signaling pathway plays a crucial role in the development of liver fibrosis by activating TGFβ type II receptor (TGFβR2), followed by the recruitment of TGFβR1 finally triggering downstream signaling pathway.
AIM To find drugs targeting TGFβR2 that inhibit TGFβR1/TGFβR2 complex formation, theoretically inhibit TGFβ signaling pathway, and thereby ameliorate liver fibrosis.
METHODS Food and Drug Administration-approved drugs were screened for binding affinity with TGFβR2 by virtual molecular docking. We identified 6 candidates and further explored their potential by Cell Counting Kit-8 (CCK-8) cell cytotoxic experiment to validate toxicity and titrated the best cellular working concentrations. Next, we further demonstrated the detailed molecular working mechanisms using mutagenesis analysis. Finally, we used a mouse model to investigate its potential anti-liver fibrosis effect.
RESULTS We identified 6 drug candidates. Among these 6 drugs, dihydroergotamine (DHE) shows great ability in reducing fibrotic gene expressions such as collagen, p-SMAD3, and α-SMA in TGFβ induced cellular model of liver fibrosis in LX-2 cells. Furthermore, we demonstrated that DHE binds to TGFβR2. Moreover, mutation of Leu27, Phe30, Thr51, Ser52, Ile53, and Glu55 of TGFβR2 disrupted the binding of TGFβR2 with DHE. In addition, DHE significantly improved liver fibrosis, as evidenced by Masson’s trichrome staining of liver sections. This is further supported by the width and the velocity of the portal vein, and serum markers of liver function. In line with those observations, DHE also decreased macrophages infiltration and extracellular matrix deposition in the liver.
CONCLUSION DHE alleviates liver fibrosis by binding to TGFβR2 thereby suppressing TGFβ signaling pathway. We show here that as far as drug repurposing, DHE has great potential to treat liver fibrosis.
Collapse
Affiliation(s)
- Ke-Xin Zheng
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Shou-Li Yuan
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Meng Dong
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Han-Lin Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao-Xiao Jiang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Chun-Long Yan
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, Agriculture College of Yanbian University, Yanji 133002, Jilin Province, China
| | - Rong-Cai Ye
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Hui-Qiao Zhou
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Li Chen
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Jiang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zi-Yu Cheng
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Graduate School, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Qi Wang
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Wan-Zhu Jin
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wen Xie
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| |
Collapse
|
3
|
Yan CL, Lin J, Huang YY, Gao QS, Piao ZY, Yuan SL, Chen L, Ren X, Ye RC, Dong M, Zhang HL, Zhou HQ, Jiang XX, Jin WZ, Zhou XM, Yan CG. Population genomics reveals that natural variation in PRDM16 contributes to cold tolerance in domestic cattle. Zool Res 2022; 43:275-284. [PMID: 35238185 PMCID: PMC8920848 DOI: 10.24272/j.issn.2095-8137.2021.360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Environmental temperature serves as a major driver of adaptive changes in wild organisms. To discover the mechanisms underpinning cold tolerance in domestic animals, we sequenced the genomes of 28 cattle from warm and cold areas across China. By characterizing the population structure and demographic history, we identified two genetic clusters, i.e., northern and southern groups, as well as a common historic population peak at 30 kilo years ago. Genomic scan of cold-tolerant breeds determined potential candidate genes in the thermogenesis-related pathways that were under selection. Specifically, functional analysis identified a substitution of PRDM16 (p.P779L) in northern cattle, which maintains brown adipocyte formation by boosting thermogenesis-related gene expression, indicating a vital role of this gene in cold tolerance. These findings provide a basis for genetic variation in domestic cattle shaped by environmental temperature and highlight the role of reverse mutation in livestock species.
Collapse
Affiliation(s)
- Chun-Long Yan
- College of Agriculture, Yanbian University, Yanji, Jilin 133000, China
| | - Jun Lin
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yuan-Yuan Huang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing-Shan Gao
- College of Agriculture, Yanbian University, Yanji, Jilin 133000, China.,North-East Cold Region Beef Cattle Science & Technology Innovation Ministry of Education Engineering Research Center, Yanbian University, Yanji, Jilin 133000, China
| | - Zheng-Yu Piao
- College of Agriculture, Yanbian University, Yanji, Jilin 133000, China.,North-East Cold Region Beef Cattle Science & Technology Innovation Ministry of Education Engineering Research Center, Yanbian University, Yanji, Jilin 133000, China
| | - Shou-Li Yuan
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Chen
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue Ren
- Annoroad Gene Technology Co. Ltd, Beijing 100176, China
| | - Rong-Cai Ye
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meng Dong
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Han-Lin Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui-Qiao Zhou
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao-Xiao Jiang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wan-Zhu Jin
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China. E-mail:
| | - Xu-Ming Zhou
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.E-mail:
| | - Chang-Guo Yan
- College of Agriculture, Yanbian University, Yanji, Jilin 133000, China.,North-East Cold Region Beef Cattle Science & Technology Innovation Ministry of Education Engineering Research Center, Yanbian University, Yanji, Jilin 133000, China. E-mail:
| |
Collapse
|
4
|
Ma JF, Li CX, Wu DP, Sun ZL, Yan CL. [Expression of Tim-3 on natural killer cells in patients with acute myeloid leukemia and its clinical significance]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:755-758. [PMID: 31648478 PMCID: PMC7342451 DOI: 10.3760/cma.j.issn.0253-2727.2019.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
目的 探讨负性共刺激分子Tim-3在初诊急性髓系白血病(AML)患者外周血自然杀伤细胞(NK细胞)表面的表达特征及其临床意义。 方法 采集2013年6月至2014年6月苏州大学附属第一医院血液内科收治的未经任何临床措施干预的39例AML患者外周血及28名健康志愿者的外周血,采用CD3−、CD56+、Tim-3+为标志,经免疫荧光标记和流式细胞术检测Tim-3在AML患者外周血NK细胞上的表达。 结果 初诊AML患者外周血NK细胞占淋巴细胞比例为(5.74±5.31)%,较正常对照组的(12.55±6.33)%显著下降(t=4.596,P<0.001);初诊AML患者外周血NK细胞上Tim-3的表达水平为(42.67±19.08)%,较正常对照组的(60.99±20.69)%显著下降(t=3.781,P<0.001)。AML患者外周血NK细胞比例与其染色体核型相关(t=2.915,P<0.05);Tim-3在AML患者NK细胞表达水平与患者诱导缓解率、危险分层相关(P值均<0.05)。 结论 AML患者外周血中NK细胞比例及Tim-3表达水平明显下降,Tim-3在AML患者外周血NK细胞上表达下调与AML的预后相关。
Collapse
Affiliation(s)
- J F Ma
- Jining No.1 People's Hospital, Jining 272000, China
| | - C X Li
- Jiangsu Institute of Hematology, the First Affiliated Hospital University, Suzhou 215006, China
| | - D P Wu
- Jiangsu Institute of Hematology, the First Affiliated Hospital University, Suzhou 215006, China
| | - Z L Sun
- Jining No.1 People's Hospital, Jining 272000, China
| | - C L Yan
- Jining No.1 People's Hospital, Jining 272000, China
| |
Collapse
|
5
|
Yan CL, Kim HS, Hong JS, Lee JH, Han YG, Jin YH, Son SW, Ha SH, Kim YY. Effect of Dietary sugar beet pulp supplementation on growth performance, nutrient digestibility, fecal Microflora, blood profiles and Diarrhea incidence in weaning pigs. J Anim Sci Technol 2017; 59:18. [PMID: 28794893 PMCID: PMC5545862 DOI: 10.1186/s40781-017-0142-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 06/19/2017] [Indexed: 11/10/2022]
Abstract
Background In 2006, the European Union (EU) has decided to forbid use of antibiotics as growth promoters. Although many researches had been conducted about fiber source as alternatives of antibiotics, there are still lack of reports in the literature about the optimum level of sugar beet pulp supplementation, affecting growth performance and nutrient digestibility in weaning pigs. Therefore, different level of sugar beet pulp was added to diets to determine the effects of sugar beet pulp supplementation on growth performance, nutrient digestibility, fecal microflora, blood profile and incidence of diarrhea in weaning pigs. Methods A total of 200 weaning pigs [(Yorkshire × Landrace) × Duroc], averaging 9.01 ± 1.389 kg of initial body weight were, allotted to 5 treatments in a randomized complete block (RCB) design. Each treatment was composed of 4 replicates with 10 pigs per pen. The treatments were control treatment: Corn-SBM basal diet + ZnO (phase 1: 0.05%; phase 2; 0.03%) and four different levels of sugar beet pulp were supplemented in Corn-SBM basal diet (3, 6, 9 or 12%). Two phase feeding programs (phase 1: 1–2 weeks; phase 2: 3–5 weeks) were used for 5 week of growth trial. Results In feeding trial, there were no significant differences in growth performance and incidence of diarrhea among treatments. The E.coli counts were not significantly different among dietary treatments but linear response was observed in Lactobacillus counts as sugar beet pulp supplementation increased (P < 0.05). In addition, IGF-1, IgA and IgG were not affected by dietary treatments. However, the BUN concentration was decreased when pigs were fed the treatments of diets with SBP compared to that of control treatment (P < 0.05). In nutrient digestibility, crude fiber and NDF digestibilities were improved as the sugar beet pulp increased (P < 0.05). However, digestibilities of crude ash, crude fat, crude fiber and nitrogen retention were not affected by dietary sugar beet pulp levels. Conclusion This experiment demonstrated that sugar beet pulp can be supplemented in weaning pigs’ diet instead of ZnO to prevent postweaning diarrhea without any detrimental effect on growth performance.
Collapse
Affiliation(s)
- C L Yan
- Department of Agricultural Biotechnology, College of Animal Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Republic of Korea
| | - H S Kim
- Department of Agricultural Biotechnology, College of Animal Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Republic of Korea
| | - J S Hong
- Department of Agricultural Biotechnology, College of Animal Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Republic of Korea
| | - J H Lee
- Department of Agricultural Biotechnology, College of Animal Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Republic of Korea
| | - Y G Han
- Department of Agricultural Biotechnology, College of Animal Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Republic of Korea
| | - Y H Jin
- Department of Agricultural College of Yanbian University, Yanji, Jilin 13300 China
| | - S W Son
- PuKyung Pig Farmers Agricultural Cooperative, Gimhae, 50925 Republic of Korea
| | - S H Ha
- PuKyung Pig Farmers Agricultural Cooperative, Gimhae, 50925 Republic of Korea
| | - Y Y Kim
- Department of Agricultural Biotechnology, College of Animal Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Republic of Korea.,College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826 South Korea
| |
Collapse
|
6
|
Tang GX, Yan PP, Yan CL, Fu B, Zhu SJ, Zhou LQ, Huang X, Wang Y, Lei J. Determinants of suicidal ideation in gynecological cancer patients. Psychooncology 2015; 25:97-103. [PMID: 26103593 DOI: 10.1002/pon.3880] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 05/14/2015] [Accepted: 05/19/2015] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Gynecological cancer survivors are at increased risk of psychological problems including suicide risk. Suicidal ideation, which was thought to be precursor to suicide attempts, has not been well studied. This study aimed to investigate the prevalence, and determinants of suicidal ideation for women with gynecological cancer, and then to assess the effect of coping style and social support on suicidal ideation. METHODS Patients with cervical, ovarian and endometrial cancers seen at Hunan Provincial Tumor Hospital from September 2012 to June 2013 were consecutively recruited and were asked to complete the Zung Self-Rating Depression Scale, Suicidal Ideation of Self-rating Scale, Medical Coping Modes Questionnaire and Social Support Rating Scale. Path analysis was used to examine the relationship among coping style, social support, depression symptoms and suicidal ideation. RESULTS A total of 579 (579/623, 93.0%) gynecological cancer patients were enrolled in this study and completed all investigations between September 2012 and June 2013. Among them, 105 (18.1%) patients reported suicidal ideation, with the highest rate in patients with ovarian cancer (30.16%). Suicidal ideation was associated with depression symptoms, care providers, chemotherapy history and acceptance-resignation. Path analysis showed that the acceptance-resignation affected suicidal ideation directly as well as mediated by social support and depression symptoms, while confrontation and avoidance affected suicidal ideation entirely through social support and depression symptoms. CONCLUSIONS Suicidal ideation is high among patients with gynecological cancer, especially among ovarian cancer patients. Coping strategies such as confrontation and avoidance, and social support may be helpful for preventing suicidal ideation among them.
Collapse
Affiliation(s)
- G X Tang
- The Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - P P Yan
- The Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - C L Yan
- The Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B Fu
- The Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - S J Zhu
- The Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - L Q Zhou
- Hunan Provincial Tumor Hospital, Changsha, Hunan, China
| | - X Huang
- School of Public Health, Central South University, Changsha, Hunan, China
| | - Y Wang
- Jining No.1 People's Hospital, Jining, Shandong, China
| | - J Lei
- The Third Xiangya Hospital of Central South University, Changsha, Hunan, China.,School of Nursing, Central South University, Changsha, Hunan, China
| |
Collapse
|
7
|
Luo YR, Tian Y, Huang X, Yan CL, Hong HS, Lin GH, Zheng TL. Analysis of community structure of a microbial consortium capable of degrading benzo(a)pyrene by DGGE. Mar Pollut Bull 2009; 58:1159-1163. [PMID: 19409577 DOI: 10.1016/j.marpolbul.2009.03.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 03/17/2009] [Accepted: 03/24/2009] [Indexed: 05/13/2023]
Abstract
A microbial consortium was obtained by enrichment culture of sea water samples collected from Botan oil port in Xiamen, China, using the persistent high concentration of a mixture of polycyclic aromatic hydrocarbons enrichment strategy. Denaturing gradient gel electrophoresis (DGGE) was used to investigate the bacterial composition and community dynamic changes based on PCR amplification of 16S rRNA genes during batch culture enrichment. Using the spray-plate method, three bacteria, designated as BL01, BL02 and BL03, which corresponded to the dominant bands in the DGGE profiles, were isolated from the consortium. Sequence analysis showed that BL01, BL02 and BL03 were phylogenetically close to Ochrobactrum sp., Stenotrophomonas maltophilia and Pseudomonas fluorescens, respectively. The degradation of benzo(a)pyrene (BaP), a model high-molecular-weight polycyclic aromatic hydrocarbon (HMW PAH) compound was investigated using individual isolates, a mixture of the three isolates, and the microbial consortium (BL) originally isolated from the oil port sea water. Results showed that the order of degradative ability was BL>the mixture of the three isolates>individual isolates. BL degraded 44.07% of the 10 ppm BaP after 14 days incubation, which showed the highest capability for HMW PAH compound degradation.Our results revealed that this high selective pressure strategy was feasible and effective in enriching the HMW PAH-degraders from the original sea water samples.
Collapse
Affiliation(s)
- Y R Luo
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
| | - Y Tian
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China.
| | - X Huang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - C L Yan
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - H S Hong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
| | - G H Lin
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - T L Zheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China.
| |
Collapse
|
8
|
Tian Y, Liu HJ, Zheng TL, Kwon KK, Kim SJ, Yan CL. PAHs contamination and bacterial communities in mangrove surface sediments of the Jiulong River Estuary, China. Mar Pollut Bull 2008; 57:707-15. [PMID: 18439626 DOI: 10.1016/j.marpolbul.2008.03.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Revised: 03/04/2008] [Accepted: 03/05/2008] [Indexed: 05/07/2023]
Abstract
Sixteen sediment samples collected from eight transects in a mangrove swamp of the Jiulong River Estuary, Fujian, China were investigated for their content of polycyclic aromatic hydrocarbons (PAHs) and the biodegradation potential of the indigenous microorganisms. The bacterial community structures in the mangrove sediments and in enrichment cultures were also investigated. The results showed that the total PAHs concentration of mangrove sediments ranged from 280 to 1074 ng g(-1) dry weight, that the PAHs composition pattern in the mangrove sediments was dominated by high molecular weight PAH components (4-6 rings), and that Benzo[ghi]perylene and Indeno[1,2,3-cd]pyrene were the most dominant at different stations. Abundant PAH-degrading bacteria were found in all the stations, the values of phenanthrene-degrading bacteria ranged from 5.85 x 10(4) to 7.80 x 10(5) CFU g(-1) dry weight, fluoranthene-degrading bacteria ranged from 5.25 x 10(4) to 5.79 x 10(5) CFU g(-1) dry weight, pyrene-degrading bacteria ranged from 3.10 x 10(4) to 6.97 x 10(5) CFU g(-1) dry weight and the benzo(a)pyrene-degrading bacteria ranged from 5.25 x 10(4) to 7.26 x 10(5) CFU g(-1) dry weight. DGGE analysis of PCR-amplified 16S rDNA gene fragments confirmed that there was a remarkable shift in the composition of the bacterial community due to the addition of the different model PAH compound phenanthrene (three ring PAH), fluoranthene(four ring PAH), pyrene(four ring PAH) and benzo(a)pyrene(five ring PAH) during enrichment batch culture. Eleven strains were obtained with different morphology and different degradation ability. The presence of common bands for microbial species in the cultures and in the native mangrove sediment DNA indicated that these strains could be potential in situ PAH-degraders.
Collapse
Affiliation(s)
- Y Tian
- Key Laboratory for Subtropical Wetland Ecosystem Research, Xiamen University, Ministry of Education, Xiamen 361005, China.
| | | | | | | | | | | |
Collapse
|
9
|
Sidwell RU, Swift S, Yan CL, Porter W, Thompson EM, Clark JA, Bunker CB. Treatment of toxic epidermal necrolysis with intravenous immunoglobulin. Int J Clin Pract 2003; 57:643-5. [PMID: 14529073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Toxic epidermal necrolysis (TEN) is a rare severe reaction of the skin resulting in full thickness damage to the epidermis. The condition has significant morbidity as a result of dehydration, protein loss, thermoregulatory difficulties, and renal, lung, liver and heart failure. The mortality rate approaches 30%, most commonly from bacterial sepsis. Management of this condition is cessation of the suspected causative agent and supportive care on a burns or intensive care unit. There have been recent reports of treatment using intravenous immunoglobulin (IVIG) therapy, though its efficacy is yet to be established. It has been proposed that IVIG inhibits the Fas-FasL mediated apoptosis of keratinocytes affected by TEN. We describe a case of extensive drug-induced TEN in a 33-year-old woman who showed rapid improvement with IVIG therapy at a dose of 0.75 g/kg/day given for four consecutive days.
Collapse
Affiliation(s)
- R U Sidwell
- Department of Dermatology, Chelsea and Westminster Hospital, London SW10 9NH, UK
| | | | | | | | | | | | | |
Collapse
|
10
|
Driscoll B, T'Ang A, Hu YH, Yan CL, Fu Y, Luo Y, Wu KJ, Wen S, Shi XH, Barsky L, Weinberg K, Murphree AL, Fung YK. Discovery of a regulatory motif that controls the exposure of specific upstream cyclin-dependent kinase sites that determine both conformation and growth suppressing activity of pRb. J Biol Chem 1999; 274:9463-71. [PMID: 10092628 DOI: 10.1074/jbc.274.14.9463] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The conformation and activity of pRb, the product of the retinoblastoma susceptibility gene, is dependent on the phosphorylation status of one or more of its 16 potential cyclin-dependent kinase (cdk) sites. However, it is not clear whether the phosphorylation status of one or more of these sites contributes to the determination of the various conformations and activity of pRb. Moreover, whether and how the conformation of pRb may regulate the phosphorylation of the cdk sites is also unclear. In the process of analyzing the function and regulation of pRb, we uncovered the existence of an unusual structural motif, m89 (amino acids 880-900), the mutation of which confers upon pRb a hypophosphorylated conformation. Mutation of this structural domain activates, rather than inactivates, the growth suppressor function of pRb. In order to understand the effect of the mutation of m89 on the phosphorylation of cdk sites, we identified all the cdk sites (Thr-356, Ser-807/Ser-811, and Thr821) the phosphorylation of which drastically modify the conformation of pRb. Mutation of each of these four sites alone or in combinations results in the different conformations of pRb, the migration pattern of which, on SDS-polyacrylamide gel electrophoresis, resembles various in vivo hypophosphorylated forms. Each of these hypophosphorylated forms of pRb has enhanced growth suppressing activity relative to the wild type. Our data revealed that the m89 structural motif controls the exposure of the cdk sites Ser-807/Ser-811 in vitro and in vivo. Moreover, the m89 mutant has enhanced growth suppressing activity, similar to a mutant with alanine substitutions at Ser-807/Ser-811. Our recent finding, that the m89 region is part of a structural domain, p5, conserved antigenically and functionally between pRb and p53, suggests that the evolutionarily conserved p5 domain may play a role in the coordinated regulation of the activity of these two tumor suppressors, under certain growth conditions.
Collapse
Affiliation(s)
- B Driscoll
- Divisions of Hematology/Oncology, Ophthalmology, Pathology, and Research Immunology/Bone Marrow Transplant, Childrens Hospital Los Angeles, CA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Jiang M, He K, Yan CL. [Study on anti-histone fraction antibodies in patients with rheumatic diseases]. Zhonghua Nei Ke Za Zhi 1992; 31:287-9, 317-8. [PMID: 1478127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
By using Western blot method, we studied the antihistone fraction antibodies in sera of patients with rheumatic diseases. After analysed with SDS-PAGE, the histone could be separated into H1, H3, H2B, H2A and H4 fractions. The positive rate of anti-histone fraction antibodies was highest (82.1%) in systemic lupus erythematosus (SLE) patients, especially in active stage. In 28 SLE patients, the positive rates of anti-H2B, -H1, -H3, -H2A and -H4 were 78.6%, 60.7%, 50.0%, 35.7% and 7.1% respectively. The results revealed that the determination of anti-histone fraction antibodies was beneficial to the diagnosis of SLE.
Collapse
Affiliation(s)
- M Jiang
- Department of Medicine, Peking, Union Medical College Hospital, Beijing
| | | | | |
Collapse
|
12
|
Abstract
Young female random-bred Wistar rats were immunized with homologous renal brush border membranes. The immunized animals exhibited all the clinical and immunopathological characteristics of chronic autologous immune complex glomerulonephritis (Heymann nephritis) closely resembling the idiopathic membranous glomerulonephritis in humans. The animals were subsequently mated. Congenital malformations and fetal growth retardation were observed in the offspring of the nephritic mothers; high incidence of embryonic/fetal resorptions was also observed. The types of anomalies were microphthalmia, cataractic lens, abnormal retina, micrognathia, cleft palate, lordosis, fetal edema, variable hemorrhage, omphalocele, syndactaly and cryptochidism. The most frequently observed anomaly was associated with the eye. Immunofluorescent studies indicated that no rat IgG was detected in the extraembryonic membranes, embryo or fetuses. Rat complement C3 was also absent around the conceptuses. The pathophysiologic mechanism leading to such deleterious embryonic/fetal effect is not clear.
Collapse
Affiliation(s)
- C C Leung
- Department of Anatomy, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark 07103
| | | | | |
Collapse
|
13
|
Abstract
It has been well established that heterologous antibodies against certain tissue components may cause congenital abnormalities when injected into pregnant rats during the critical period of organogenesis. A glycoprotein antigen (gp340) of rat renal proximal tubules was isolated (C.C.K. Leung: (J. Exp. Med., 156:372-384, 1982); antibodies against gp340 were teratogenic. Indirect colloidal gold immunocytochemical method was utilized to study the ultrastructural localization of gp340. For comparative studies, both preembedding and postembedding immunostaining procedures were used. The results indicate that gp340 is a resident of coated pits and possibly also of coated vesicles of the rat renal proximal tubules and visceral yolk-sac (VYS) endodermal cells. It appears that gp340 may also be associated with the microvilli and some as-yet-unidentified cytoplasmic structures of the same tissues. However, gp340 is absent on the epithelium of the small intestine. It is hypothesized that the teratogenic antibodies may interact with gp340 on the coated pits and interfere with receptor-mediated endocytosis, causing yolk-sac placenta dysfunction which in turn causes abnormal embryonic development.
Collapse
Affiliation(s)
- C C Leung
- Department of Anatomy, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark 07103
| | | | | |
Collapse
|
14
|
Leung CC, Yan CL, Cheewatrakoolpong B. Teratogenic antibody internalization by rat visceral yolk-sac endoderm in vitro: an ultrastructural colloidal gold tracer study. Am J Anat 1988; 183:125-9. [PMID: 3202080 DOI: 10.1002/aja.1001830203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Previous work from our laboratory has demonstrated that specific rabbit immunoglobulins G (IgG) against a glycoprotein antigen of rat kidney proximal tubule or a cross-reacting visceral yolk-sac endodermal cell antigen will induce abnormal embryonic development when they are injected into pregnant rats during the period of organogenesis. It has been proposed that these antibodies may induce embryopathy by interfering with functions of the visceral yolk-sac placenta, an important organ providing nutrients to the embryo at this stage of development. In order to gain some insight into the underlying pathogenic mechanism(s) in which specific teratogenic IgG may interfere with visceral yolk-sac functions, we examined the uptake of these teratogenic IgG by the visceral yolk-sac endodermal cells at the electron microscopic level. The results demonstrated that teratogenic rabbit IgG specifically localized on the fuzzy coat of the external apical cell membrane of the visceral yolk-sac endoderm at the intermicrovillous region. Within 5 min, the IgG were rapidly internalized via coated pits and micropinocytic vesicles. Within 30 min, an increasing proportion of gold particles appeared within uncoated vesicles or vacuoles of various sizes; most of the gold particles were in close proximity to the inner membranous lining of the vesicles. Similar findings were observed after 1- or 2-hr incubation. After 24- to 48-hr culture, however, the gold particles appeared to have dissociated from the inner surface of the vesicle membrane.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- C C Leung
- Department of Anatomy, UMDNJ-New Jersey Medical School, Newark 07103
| | | | | |
Collapse
|
15
|
Lin FY, Lin JW, Chang H, Yan CL. Pseudoaneurysm of common carotid artery after irradiation: report of a case. Taiwan Yi Xue Hui Za Zhi 1988; 87:828-31. [PMID: 3241163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
16
|
Yan CL, Tang YQ, Yu Z. [Retrocaval ureter: report of 6 cases]. Zhonghua Wai Ke Za Zhi 1986; 24:38-9, 63-4. [PMID: 3720448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
17
|
Huang SL, Hou MZ, Yan CL. Reconstruction of the thumb by a free pedal neurovascular flap and composite phalanx-joint-tendon homograft: a preliminary report. J Reconstr Microsurg 1985; 1:299-303. [PMID: 4057169 DOI: 10.1055/s-2007-1007089] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A one-stage procedure for reconstructing the thumb was used in 10 patients, using previously frozen bone-joint-tendon composite allograft and a neurovascular free skin flap from the foot. Levels of injury ranged from the greater multiangular bone to the middle of the first phalanx. Postoperative bony absorption and joint degeneration were minimized, and no cases of tissue rejection were encountered. Further advantages of the procedure are that subsequent nerve regeneration and cutaneous sensibility are improved, and that there are better functional and aesthetic results, compared to other techniques. Using this procedure, donor site dysfunction is also minimal.
Collapse
|
18
|
Yan CL. [Familial pheochromocytoma (with report of 4 cases)]. Zhonghua Yi Xue Za Zhi 1983; 63:232-4. [PMID: 6137271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|