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He M, Huan L, Wang X, Fan Y, Huang J. Nine dietary habits and risk of colorectal cancer: a Mendelian randomization study. BMC Med Genomics 2024; 17:21. [PMID: 38233852 PMCID: PMC10795375 DOI: 10.1186/s12920-023-01782-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 12/16/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Epidemiological studies have provided evidence that there is an association between diet and colorectal cancer. However, the causal relationship between dietary habits and colorectal cancer remains unknown. METHODS The UK Biobank provided summary-level genome-wide association study data for nine dietary habits, including alcohol consumption (n = 549,703), instant coffee consumption (n = 250,308), fruit consumption (n = 210,947), meat consumption (n = 210,947), full cream milk consumption (n = 41,306), sweets consumption (n = 25,521), tea consumption (n = 501,494), vegetable consumption (n = 210,947), and yogurt/ice cream consumption (n = 210,947). Additionally, data on colorectal cancer were collected, consisting of 5,567 cases and 372,016 controls. The MR analysis employed inverse variance weighted, weighted median, MR-Egger regression, and MR multivariate residuals tests. RESULTS In the predominantly European population, a positive association was observed between vegetables (OR = 1.014, 95% CI = 1.000-1.029, p = 0.048) and an increased risk of colorectal cancer. The results for vegetable did not survive correction for multiple comparisons. However, no strong evidence was found for other dietary factors, such as alcohol (OR = 1.012, 95% CI = 0.974-1.051, p = 0.556), fruit (OR = 1.007, 95% CI = 0.986-1.029, p = 0.512), meat (OR = 1.000, 95% CI = 0.987-1.026, p = 0.968), full cream milk (OR = 1.019, 95% CI = 0.979-1.061, p = 0.357), sweets (OR = 0.998, 95% CI = 0.991-1.004, p = 0.524), and tea (OR = 1.002, 95% CI = 0.994-1.009, p = 0.672), with regards to colorectal cancer risk in the European population. CONCLUSIONS Our study highlights the need for a more nuanced approach to dietary recommendations for CRC prevention, with greater emphasis adherence to the Mediterranean dietary pattern.
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Affiliation(s)
- Mengyang He
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Luyao Huan
- Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Xuan Wang
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Yingyi Fan
- Beijing University of Chinese Medicine Third Affiliated Hospital, No. 51 Anwai Xiaoguan Street, Chaoyang District, Beijing, 100029, China.
| | - Jinchang Huang
- Beijing University of Chinese Medicine Third Affiliated Hospital, No. 51 Anwai Xiaoguan Street, Chaoyang District, Beijing, 100029, China.
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Zhang Y, Weng J, Huan L, Sheng S, Xu F. Mitophagy in atherosclerosis: from mechanism to therapy. Front Immunol 2023; 14:1165507. [PMID: 37261351 PMCID: PMC10228545 DOI: 10.3389/fimmu.2023.1165507] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/12/2023] [Indexed: 06/02/2023] Open
Abstract
Mitophagy is a type of autophagy that can selectively eliminate damaged and depolarized mitochondria to maintain mitochondrial activity and cellular homeostasis. Several pathways have been found to participate in different steps of mitophagy. Mitophagy plays a significant role in the homeostasis and physiological function of vascular endothelial cells, vascular smooth muscle cells, and macrophages, and is involved in the development of atherosclerosis (AS). At present, many medications and natural chemicals have been shown to alter mitophagy and slow the progression of AS. This review serves as an introduction to the field of mitophagy for researchers interested in targeting this pathway as part of a potential AS management strategy.
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Affiliation(s)
- Yanhong Zhang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jiajun Weng
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Traditional Chinese Medicine Clinical Medical School (Xiyuan), Peking University, Beijing, China
- Department of Integrated Traditional and Western Medicine, Peking University Health Science Center, Beijing, China
| | - Luyao Huan
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Song Sheng
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fengqin Xu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Traditional Chinese Medicine Clinical Medical School (Xiyuan), Peking University, Beijing, China
- Department of Integrated Traditional and Western Medicine, Peking University Health Science Center, Beijing, China
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Laselva O, Qureshi Z, Zeng Z, Petrotchenko E, Ramjeesingh M, Hamilton M, Huan L, Borchers C, Pomes R, Young R, Bear C. 634: Identification of binding sites for ivacaftor on CFTR. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02057-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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He M, Deng X, Zhu Y, Huan L, Niu W. The relationship between sleep duration and all-cause mortality in the older people: an updated and dose-response meta-analysis. BMC Public Health 2020; 20:1179. [PMID: 32723316 PMCID: PMC7389345 DOI: 10.1186/s12889-020-09275-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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] [Received: 01/16/2020] [Accepted: 07/19/2020] [Indexed: 01/10/2023] Open
Abstract
Background Short or long sleep duration is proposed as a potential risk factor for all-cause mortality in the older people, yet the results of published studies are not often reproducible. Methods Literature retrieval, study selection and data extraction were completed independently and in duplicate. Only prospective cohort studies were included. Effect-size estimates are expressed as hazard ratio (HR) and 95% confidence interval (CI). Results Summary data from 28 articles, involving a total of 95,259 older people, were meta-analyzed. Overall analyses revealed a remarkably significant association between long sleep duration and all-cause mortality (adjusted HR = 1.24, 95% CI: 1.16–1.33, P < .001), whereas only marginal significance was observed for short sleep duration (adjusted HR = 1.04; 95% CI: 1.00–1.09; P = .033). Funnel plots suggested no publication bias for short sleep duration (P = .392). The probability of publication bias was high for long sleep duration (P = .020), yet the trim-and-fill method strengthened its significance in predicting all-cause mortality. In subgroup analyses, the association of long sleep duration with all-cause mortality was statistically significant in both women (HR = 1.48; 95% CI: 1.18–1.86; P = .001) and men (HR = 1.31; 95% CI: 1.10–1.58; P = .003). By contrast, with regard to short sleep duration, statistical significance was observed in men (HR = 1.13; 95% CI: 1.04–1.24; P = .007), but not in women (HR = 1.00; 95% CI: 0.85–1.18; P = .999) (Two-sample Z test P = .099). Besides gender, geographic region, sleep survey method, baseline age and follow-up interval were identified as possible causes of between-study heterogeneity in subgroup analyses. Further dose-response regression analyses revealed that trend estimation was more obvious for long sleep duration (regression coefficient: 0.13; P < .001) than for short sleep duration (regression coefficient: 0.02; P = .046). Conclusions Our findings indicate a significantly increased risk of all-cause mortality associated with long sleep duration, especially in women, as well as with short sleep duration in men only.
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Affiliation(s)
- Mengyang He
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Xiangling Deng
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Yuqing Zhu
- International Medical Department, China-Japan Friendship Hospital, Beijing, China
| | - Luyao Huan
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Wenquan Niu
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, No.2 Yinghua East Street, Chao Yang District, Beijing, 100029, China.
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Huan L. O391 Clinical study of the efficacy therapy for persistent ectopic pregnancy. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60763-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Tang S, Chen X, Yang W, Chen M, Huan L. [Isolation and characterization of a plasmid pTS50, which encodes nisin resistance determinant in Lactococcus lactis TS1640]. Wei Sheng Wu Xue Bao 2001; 41:536-41. [PMID: 12552799] [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: 02/28/2023]
Abstract
Three nisin-resistant Lactococcus lactis strains were screened from 197 samples of fresh milk on a selective medium (M17) supplemented with nisin, lactose and bromocresol purple, and were confirmed to have the nisin resistance determinant (nsr) by PCR amplification. Physiological and biochemical tests as well as Lactococcus lactis specific 16S rDNA sequence analysis revealed that the three strains all belong to Lactococcus lactis subsp. lactis. A large plasmid, pTS50, was identified in L. lactis subsp. lactis TS1640 which encodes resistance to nisin following electroporation of the total plasmids DNA into L. lactis MG1363. The molecular weight of plasmid pTS50 was estimated to be 47 kb by restriction analysis of BamHI, EcoRI, HindIII, NcoI, PstI and nsr was localized on a 1.9 kb EcoRI fragment by Southern hybridization.
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Affiliation(s)
- S Tang
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China
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Na S, Jia S, Chen X, Chen M, Huan L. [Isolation and identification of the broad spectrum antimicrobial peptide AP311 produced by Lactobacillus acidophilus]. Wei Sheng Wu Xue Bao 2001; 41:494-8. [PMID: 12552918] [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: 02/28/2023]
Abstract
The heat stable antimicrobial peptide (AP311) produced by Lactobacillus acidophilus was isolated and identified. The AP311 has broad spectrum of inhibition including many Gram-positive and Gram-negative bacteria. The inhibition activity of AP311 was lost upon treatment with trypsin, subtilisin, proteanase K, chymotrypsin and pepsin. Inhibition activity of AP311 was decreased with pH increasing. The AP311 is very stable at acidic condition (pH2-4) even if heating at 100 degrees C for 30 min. But it was inactivated at basic pH (pH12) and the activity was restored completely upon reversion to acidic. The AP311 was not precipitated and inactivated by various organic solvents, except n-butanol. When the precipitate was redissolved in 0.02 mol/L HC1, its activity was restored. Based on its proteinaceous nature, broad spectrum of inhibition, we propose that AP311 should be considered the broad spectrum antimicrobial peptide.
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Affiliation(s)
- S Na
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China
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Chen X, Liu Z, Huan L. [The construction and application of promoter-signal peptide probe vector of lactic acid bacteria]. Wei Sheng Wu Xue Bao 2001; 41:101-4. [PMID: 12549197] [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: 02/28/2023]
Abstract
A promoter-signal peptide probe vector of lactic acid bacteria, designated pZLB based on pMG36e has been constructed. The vector contained a reporterd gene encoding for beta-lactamase, which lacked a promoter and a functional signal sequence. Sau3A restriction fragments (80-400 bp) from L. lactis ATCC 7962 total DNA were cloned into BamHI site of pZLB. A lot of different size framents were selected. These fragments promoted transcription and secretion of beta-lactamase in L. lactis. Sequence analysis revealed that inserted fragment in pZLBe7 contained typical promoter, SD sequence and atypical signal sequence.
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Affiliation(s)
- X Chen
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China
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Chen X, Hu H, Jia S, Chen M, Huan L. [Construction of genomic library from L. lactis AL2 and isolation of entire nisin biosynthesis gene cluster]. Wei Sheng Wu Xue Bao 2000; 40:465-9. [PMID: 12548755] [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: 02/28/2023]
Abstract
A total DNA library of Lactococcus lactis AL2 with high yield of nisin was successfully constructed using lambda EMBL3 as vector. 3900 plaques were obtained, which is much more than the required number of recombinants that represents an entire L. lactis genome according to Clarke and Carbon formula. Southern hybridization, PCR amplification and DNA sequencing revealed that the entire nisin biosynthesis gene cluster was isolated from the constructed library.
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Affiliation(s)
- X Chen
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080
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Na S, Huan L. [Ribosomally synthesized antimicrobial peptide produced by eukaryotes]. Wei Sheng Wu Xue Bao 2000; 40:108-10. [PMID: 12548889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- S Na
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080
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Huan L, Sun H, Chen X, Zhuang Z, Xue Y. [Cloning and expression of promoter and signal peptide function fragments from Lactococcus lactis in Escherichia coli]. Yi Chuan Xue Bao 1997; 24:471-9. [PMID: 9494297] [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: 02/06/2023]
Abstract
Promoter and signal peptide function fragments from Lactococcus lactis were cloned in E. coli using a promoter-signal sequence probe vector pGPB14. Forty-two clones were obtained, whose level of resistance to ampicillin ranged from 100 to 8000 micrograms/ml. Eight clones were selected for beta-lactamase distribution assay. The beta-lactamase activity was found mainly in the periplasm, which indicated successful secretion of the enzyme. Southern hybridization test demonstrated that the inserted fragments were indeed from L. lactis. Restriction enzyme analysis revealed that the size of inserted fragments ranged from 80bp to 400 bp, four of which were sequenced on the vector pGEM-3Zf. It was found that the inserted fragments of pSEQ8 and pSEQ12 turned out to be part of the inserted fragments of pSEQ4 and pSEQ17 respectively. Promoter and translation initiation codon were found among all four fragments signal sequenced. One typical S. D. sequence and one atypical signal sequence were found in pHSB4 and pHSB8, while the other two contained no typical S. D. sequence and signal peptide sequence. In addition, it was found that the upstream regions of the promoter contributed to the efficiency of transcription initiation.
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Affiliation(s)
- L Huan
- Institute of Microbiology, Chinese Academy of Sciences, Beijing
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12
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Chen X, He S, Long L, Huan L, Xue Y. [Studies on purification and some properties of nisin from Lactococcus lactis subsp. lactis Al2]. Wei Sheng Wu Xue Bao 1996; 36:269-275. [PMID: 9639829] [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: 05/22/2023]
Abstract
Nisin from Lactococcus lactis subsp. lactis AL2 was extracted with n-propanol from NaCl-saturated culture and purified by ion-exchange chromotography on CM-Sephadex C-25. Nisin was purified 1.63 fold with a yield of 41.7%. The molecular weight of nisin was determined by SDS-PAGE to be about 3500. Nisin activity was stable at low pH and sensitive to digestion by a-chymotrypsin. Nisin is capable of inhibiting a broad range of gram-positive bacteria. In contrast, the gram-negative bacteria, yeasts, molds and Nip+ L. lactis subsp. lactis ATCC11454 were not inhibited.
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Affiliation(s)
- X Chen
- Institute of Microbiology, Academia Sinica, Beijing
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Abstract
BACKGROUND Chlamydia trachomatis is an important pathogen of the urogenital tract. Numerous epidemiologic studies have reported on the prevalence of chlamydia world wide. However, the prevalence of Chlamydia trachomatis in China has not been widely studied. GOAL OF THIS STUDY To identify Chlamydia trachomatis in three distinct populations in China. Urogenital specimens were collected from men with no prior history of sexual intercourse (virgin), men seen at a sexually transmitted disease clinic, and female prostitutes. STUDY DESIGN Two-hundred urethral swabs were collected from group one, and 100 urethral swabs from group two, and 109 cervical swabs from group three. All specimens were tested for chlamydia by tissue culture isolation using McCoy cells and an iodine stain. RESULTS Chlamydia trachomatis was not isolated from the virgin males. The prevalence of chlamydia in men seen at a sexually transmitted disease clinic was 13% (13/100) and in female prostitutes, 37.6% (41/109). CONCLUSION The prevalence of chlamydia seen in these three groups is similar to rates found in previous studies done in the United States and Europe in similar populations. Patients with multiple sex partners in China need to be screened for C. trachomatis.
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Affiliation(s)
- H Bai
- Department of Dermatology and Venereology, Sun Yat-Sen University of Medical Sciences, Guangzhou, People's Republic of China
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Abstract
The relation between flow rate (Q) and transvalvular pressure-drop (DP) is of fundamental importance for a prosthetic heart valve tested in steady flow conditions. The Q-DP plot can thus be called the static characteristic of the valve. While in pulsatile flow, with time (t) as a parameter, the instantaneous Q(t)-DP(t) relation can also be obtained. The Q-DP relation forms a phase graph on an X-Y plane during a whole cardiac cycle, and can be regarded as the dynamic characteristic, which to our knowledge has never been systematically explored before. With in vitro experiment the Q(t)-DP(t) relations are presented for five different aortic valves. Properly modelling the characteristics of heart valves is a key link in modelling the interactions between the ventricle and arterial system. Treatments for valves, such as diode analogue and orifice area assumption governed by the Gorlin formula, are found unsatisfactory. A simple one-dimensional flow equation is used to further examine the Q-DP graph, and both the dynamic resistance characteristic and the dynamic flow characteristic can be obtained. It is found that the dynamic characteristic differs from the static one not only in the inertance effect but also in the transient process, which can be quite energy-consuming and therefore important. Geometric relations of these phase graphs with the transvalvular power loss are discussed. The method of dynamic characteristics provides a new way to evaluate the performance of a tested valve.
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Affiliation(s)
- J She
- Department of Anatomy, Shanghai Medical University, People's Republic of China
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Jiang H, Dong K, Huan L. [Subcloning and sequencing of promoter active DNA fragment from Streptomyces lividans]. Wei Sheng Wu Xue Bao 1994; 34:480-2. [PMID: 7879388] [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: 01/27/2023]
Abstract
Random subfragments with strong promoter activities were isolated from 2. 1 kb fragment of pMG50-25 using a promoter-probe vector pIJ4083. One of the promoter-active region was narrowed down to a 220bp sequence. Putative promoter regions, SD sequence and start codons were found.
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Affiliation(s)
- H Jiang
- Institute of Microbiology, Academia Sinica, Beijing
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Xu G, Huan L, Khatri I, Sajjan US, McCool D, Wang D, Jones C, Forstner G, Forstner J. Human intestinal mucin-like protein (MLP) is homologous with rat MLP in the C-terminal region, and is encoded by a gene on chromosome 11 p 15.5. Biochem Biophys Res Commun 1992; 183:821-8. [PMID: 1550588 DOI: 10.1016/0006-291x(92)90557-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A cDNA specific for a human intestinal mucin (MLP) was amplified by PCR from cDNA of cultured human colonic adenocarcinoma cells, LS174T. The human cDNA shared high sequence homology with a corresponding rat intestinal mucin (MLP) cDNA in the 3' terminal region, and hybridized to the same mRNA (approximately 9.0 Kb) that was recognized by a probe for the MUC-2 human intestinal mucin gene. The gene encoding our human mucin peptide also mapped to chromosome 11 p 15.5, the known locus of MUC-2. Our findings suggest that human MLP and MUC-2 are encoded by the same gene and that rat and human intestinal mucin share a common C-terminal amino acid structure.
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Affiliation(s)
- G Xu
- Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
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Tang IT, Huan L, Liao SS. [Isolation of Legionella pneumophila from cooling tower in China]. Kansenshogaku Zasshi 1985; 59:787-92. [PMID: 3937869 DOI: 10.11150/kansenshogakuzasshi1970.59.787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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