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Luo L, Reimert I, Graat EAM, Smeets S, Kemp B, Bolhuis JE. Effects of early life and current housing on sensitivity to reward loss in a successive negative contrast test in pigs. Anim Cogn 2019; 23:121-130. [PMID: 31720926 PMCID: PMC6981316 DOI: 10.1007/s10071-019-01322-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 10/01/2019] [Accepted: 10/22/2019] [Indexed: 10/25/2022]
Abstract
Animals in a negative affective state seem to be more sensitive to reward loss, i.e. an unexpected decrease in reward size. The aim of this study was to investigate whether early-life and current enriched vs. barren housing conditions affect the sensitivity to reward loss in pigs using a successive negative contrast test. Pigs (n = 64 from 32 pens) were housed in barren or enriched conditions from birth onwards, and at 7 weeks of age experienced either a switch in housing conditions (from barren to enriched or vice versa) or not. Allotting pigs to the different treatments was balanced for coping style (proactive vs. reactive). One pig per pen was trained to run for a large reward and one for a small reward. Reward loss was introduced for pigs receiving the large reward after 11 days (reward downshift), i.e. from then onwards, they received the small reward. Pigs housed in barren conditions throughout life generally had a lower probability and higher latency to get the reward than other pigs. Proactive pigs ran overall slower than reactive pigs. After the reward downshift, all pigs ran slower. Nevertheless, reward downshift increased the latency and reduced the probability to get to the reward, but only in pigs exposed to barren conditions in early life, which thus were more sensitive to reward loss than pigs from enriched early life housing. In conclusion, barren housed pigs seemed overall less motivated for the reward, and early life housing conditions had long-term effects on the sensitivity to reward loss.
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Dong G, Huang Y, Ding H, Luo L, Zhang Y, Huang H, Ruan H. Mypt1 regulates Bmp signaling to promote embryonic exocrine pancreas growth in zebrafish. Genesis 2019; 58:e23345. [PMID: 31705616 DOI: 10.1002/dvg.23345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 10/21/2019] [Accepted: 10/30/2019] [Indexed: 12/19/2022]
Abstract
Myosin phosphatase targeting subunit 1 (Mypt1) is the regulatory subunit of myosin phosphatase which dephosphorylates the light chain of myosin II to inhibit its contraction. Although biochemical properties of Mypt1 have been characterized in detail, its biological functions in organisms are not well understood. The zebrafish mypt1 sq181 allele was found defective in the ventral pancreatic bud and extrapancreatic duct development, resulting in dysplasia of exocrine pancreas. In mypt1 sq181 mutant, the early growth of the ventral pancreatic bud was initiated but failed to expand due to impaired cell proliferation and increased cell apoptosis. As Mypt1 is essential for cell migration, the loss-of-function of Mypt1 in the mutant disrupted the lateral plate mesoderm migration during gut looping, therefore, altering the Bmp2a expression pattern within it, and eventually leading to impaired Bmp signaling in the adjacent exocrine pancreas. Overexpression of bmp2a could rescue the development of exocrine pancreas, suggesting that the impaired Bmp2a signaling is responsible for the pancreatic development defects. Bmp2a has been reported to promote the early specification of the ventral pancreatic bud, and our study reveals that it continues to serve as a cell proliferation/survival signal to ensure pancreatic bud growth properly in zebrafish.
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Wei HC, Chen P, Liang XF, Yu HH, Wu XF, Han J, Luo L, Gu X, Xue M. Plant protein diet suppressed immune function by inhibiting spiral valve intestinal mucosal barrier integrity, anti-oxidation, apoptosis, autophagy and proliferation responses in amur sturgeon (Acipenser schrenckii). FISH & SHELLFISH IMMUNOLOGY 2019; 94:711-722. [PMID: 31574297 DOI: 10.1016/j.fsi.2019.09.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
An 8-week growth trial was conducted to investigate the effects of replacing dietary fishmeal with a plant protein blend on the growth performance, mucosal barrier integrity and the related regulation mechanism in Amur Sturgeon (Acipenser schrenckii) with initial weight of 87.48 g. Three isonitrogenous and isoenergetic diets were prepared. A basal diet containing 540 g/kg fishmeal (P0), whereas the other two diets were formulated by replacing 50% and 100% of FM with plant protein blend (soybean protein concentrate and cottonseed protein concentrate), and named as P50 and P100, respectively. Although essential amino acids, fatty acids, and available phosphorus had been balanced according to the nutrient requirement of sturgeon, compared with the fish of P0 and P50, the full plant protein diet (P100) significantly reduced growth performance and survival, and accompanied with serious spiral valve intestinal (SVI) damage. The increased tissue necrosis and failed responses in anti-oxidation, programming apoptosis, autophagy and cell proliferation system were regulated by inhibiting ERK1 phosphorylation, which indicated that SVI hypoimmunity and functional degradation were the main reasons for the high mortality and low utilization ability of plant protein in Amur sturgeon.
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Zheng Y, Luo L, Gao Z, Liu Y, Chen Q, Kong X, Yang Y. Grafting induces flowering time and tuber formation changes in Brassica species involving FT signalling. PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:1031-1038. [PMID: 31267637 DOI: 10.1111/plb.13024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 06/26/2019] [Indexed: 06/09/2023]
Abstract
Brassica species are widely cultivated and important biennial and annual crops. The transition from vegetative to reproductive development in Brassica species is critical in agriculture and horticulture. Grafting is a useful tool for improving agricultural production and investigating the movement of long-range signals. Here we established a hypocotyl micrografting system in B. rapa crops and successfully grafted the rootstock of turnip onto many different scion genotypes. Grafting with turnip rootstock prolonged vegetative growth, delayed flowering and improved seed yield in rapeseed. The late-flowering turnip rootstock could delay flowering of the scion of the early-flowering turnip accession. The BrrFLC1 (FLOWERING LOCUS C1 in B. rapa) transcript levels and H3K4me3 levels at the BrrFLC1 locus were up-regulated and subsequently suppressed the downstream FT (FLOWERING LOCUS T) signals in leaves of the scion to delay flowering. Vernalization treatment can efficiently promote flowering time in turnip. The non-vernalised turnip flowered early after grafting onto the rootstock of the vernalised turnip, which was accompanied by high levels of FT homologue expression in leaves of the scion. Hypocotyl excision experiments revealed that the process of tuber formation was suppressed by removing the hypocotyl tissue, which in turn repressed the expression of tuberization-related genes. Our findings suggest that the rootstock generates mobile signals that are transported from the rootstock to the scion to fine-tune FT signalling and modulate flowering time.
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Sun X, Zhang R, Liu M, Chen H, Chen L, Luo F, Zhang D, Huang J, Li F, Ni Z, Qi H, Su N, Jin M, Yang J, Tan Q, Du X, Chen B, Huang H, Chen S, Yin L, Xu X, Deng C, Luo L, Xie Y, Chen L. Rmrp Mutation Disrupts Chondrogenesis and Bone Ossification in Zebrafish Model of Cartilage-Hair Hypoplasia via Enhanced Wnt/β-Catenin Signaling. J Bone Miner Res 2019; 34:2101-2116. [PMID: 31237961 DOI: 10.1002/jbmr.3820] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 06/11/2019] [Accepted: 06/14/2019] [Indexed: 01/09/2023]
Abstract
Cartilage-hair hypoplasia (CHH) is an autosomal recessive metaphyseal chondrodysplasia characterized by bone dysplasia and many other highly variable features. The gene responsible for CHH is the RNA component of the mitochondrial RNA-processing endoribonuclease (RMRP) gene. Currently, the pathogenesis of osteochondrodysplasia and extraskeletal manifestations in CHH patients remains incompletely understood; in addition, there are no viable animal models for CHH. We generated an rmrp KO zebrafish model to study the developmental mechanisms of CHH. We found that rmrp is required for the patterning and shaping of pharyngeal arches. Rmrp mutation inhibits the intramembranous ossification of skull bones and promotes vertebrae ossification. The abnormalities of endochondral bone ossification are variable, depending on the degree of dysregulated chondrogenesis. Moreover, rmrp mutation inhibits cell proliferation and promotes apoptosis through dysregulating the expressions of cell-cycle- and apoptosis-related genes. We also demonstrate that rmrp mutation upregulates canonical Wnt/β-catenin signaling; the pharmacological inhibition of Wnt/β-catenin could partially alleviate the chondrodysplasia and increased vertebrae mineralization in rmrp mutants. Our study, by establishing a novel zebrafish model for CHH, partially reveals the underlying mechanism of CHH, hence deepening our understanding of the role of rmrp in skeleton development.
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Yang XS, Wang GX, Luo L. Long non-coding RNA SNHG16 promotes cell growth and metastasis in ovarian cancer. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 22:616-622. [PMID: 29461589 DOI: 10.26355/eurrev_201802_14284] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the expression of long non-coding RNA SNHG16 in ovarian cancer and to further investigate its role in the development of ovarian cancer as well as its potential regulatory mechanism. PATIENTS AND METHODS Quantitative Real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of SNHG16 in 103 ovarian cancer tissues and normal tissues; the relationship between the expression of SNHG16 and the pathological parameters of ovarian cancer and the prognosis of patients was also analyzed. qRT-PCR was used to further verify the expression of SNHG16 in the ovarian cancer cells. After establishment of SNHG16 knockdown expression model in ovarian cancer cells SKOV-3 and HO8910 using small interfering RNA, the effect of SNHG16 on biological function of ovarian cancer cells was analyzed via cell counting kit-8 (CCK8), transwell invasion and migration assay. Finally, its potential mechanism was analyzed by Western Blot. RESULTS qRT-PCR results showed that the expression of SNHG16 in ovarian cancer was significantly higher than that in normal tissues, and the difference was statistically significant. Compared with patients with lower expression of SNHG16, patients with higher expression of SNHG16 had higher tumor stage, high rate of distant metastasis and low overall survival rate. Compared with the negative control si-NC group, the cell proliferation, invasion and migration ability in SNHG16 knockdown group (si-SNHG16) significantly decreased. Western Blot showed that after knockdown of SNHG16, expressions of P-AKT and MMP9 decreased significantly, while there was no significant change in the total AKT level. CONCLUSIONS SNHG16 was highly expressed in ovarian cancer, and was correlated with staging, distant metastasis and poor prognosis of ovarian cancer. SNHG16 may activate phosphorylation of AKT and upregulate the expression of MMP9 to promote cell proliferation, invasion and migration of ovarian cancer.
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Shi J, Xing YM, Qian J, Yang H, Luo L, Kong DH, Pan CZ, Shu XH, Ge J. P4348Early assessment of left ventricular function by layer-specific strain and its relationship to pulsatile arterial load in patients with coronary slow flow. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Previous studies reported controversial Left ventricular (LV) function impairment and pathophysiology in patients with coronary slow flow (CSF). Greater arterial load has been shown to increase aortic impedance and endothelial shear stress, potentially affecting coronary anatomy and function. We investigated LV systolic function by a new layer-specific strain technology and assessed the association between pulsatile arterial load and contractility.
Methods and results
A total of 70 patients with CSF and 50 controls with normal coronary angiography were included in the study. Layer-specific longitudinal and circumferential strains were assessed from endocardium, mid-myocardium and epicardium (GLS-endo, GLS-mid, GLS-epi and GCS-endo, GCS-mid, GCS-epi) by two-dimensional speckle tracking imaging (2D-STI). Pulsatile arterial load was estimated by indexed arterial compliance (ACI). Layer-specific GLS showed a decreasing gradient from the endocardium to the epicardium in both controls and CSF group. GLS-endo and GLS-mid in CSF group were significantly lower than the control group (all P<0.05). Layer-specific longitudinal strain showed a good correlation with the number of affected coronary arteries (all P<0.05) and the mean thrombolysis in myocardial infarction frame count (TFC) (all P<0.05). ACI was lower in CSF patients (P=0.005) and ACI was correlated negatively with layer-specific GLS (all P<0.05).
Conclusion
Layer-specific evaluation of the LV provides an understanding of the layer-specific properties of the LV wall and the possible process of the LV impairment in patients with CSF. Greater pulsatile arterial load, as manifested by a lower ACI, is coupled with worse LV longitudinal function in CSF patients.
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Sil BC, Alvarez MP, Zhang Y, Kung CP, Hossain M, Iliopoulos F, Luo L, Crowther JM, Moore DJ, Hadgraft J, Lane ME, Hilton ST. 3D-printed Franz type diffusion cells. Int J Cosmet Sci 2019; 40:604-609. [PMID: 30468516 DOI: 10.1111/ics.12504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 11/19/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Franz cells are routinely used to measure in vitro skin permeation of actives and must be inert to the permeant under study. The aim of the present work was to develop and manufacture transparent Franz-type diffusion cells using 3D printing. Printouts were then tested using a range of model active compounds. The study also aims to identify the critical 3D-printing parameters necessary for the process, including object design, choice of printing resin, printout curing and post-curing settings and introduction of model coatings. METHODS Transparent Franz cells were constructed using an online computer aided design program and reproduced with different stereolithography 3D printers. The two acrylate-based resins used for the fabrication process were a commercially available product and a polymer synthesised in-house. Comparative studies between glass and 3D-printed Franz cells were conducted with selected model actives: terbinafine hydrochloride (TBF), niacinamide (NIA), diclofenac free acid (DFA) and n-methyl paraben (MPB). In preliminary studies, MPB showed the lowest recovery when exposed to the receptor compartment of 3D printed cells. Consequently, in vitro permeation studies were carried out using only MPB with polydimethylsiloxane (PDMS) membrane. RESULTS A decrease in the amounts of selected compounds was observed for transparent 3D-printed Franz cells compared to glass cells. MPB showed the lowest recovery (53.8 ± 13.1%) when compared with NIA (74.9 ± 4.0%), TBF (81.5 ± 12.0%) and DFA (90.2 ± 12.9%) after 72 h. Permeation studies conducted using 3D-printed transparent cells with PDMS membrane also showed a decrease in MPB recovery of 51.4 ± 3.7% for the commercial resin and 94.4 ± 3.5% for the polymer synthesised in-house, when compared to glass cells. Although hydrophobic coatings were subsequently applied to the 3D-printed cells, the same reduction in MPB concentration was observed in the receptor solution. CONCLUSION Transparent Franz cells were successfully prepared using 3D printing and were observed to be robust and leak-proof. There are few resins currently available for preparation of transparent materials and incompatibilities between the actives investigated and the 3D-printed cells were evident. Hydrophobic coatings applied as barriers to the printed materials did not prevent these interactions.
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Wei X, Luo L, Chen J. Roles of mTOR Signaling in Tissue Regeneration. Cells 2019; 8:cells8091075. [PMID: 31547370 PMCID: PMC6769890 DOI: 10.3390/cells8091075] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 12/11/2022] Open
Abstract
The mammalian target of rapamycin (mTOR), is a serine/threonine protein kinase and belongs to the phosphatidylinositol 3-kinase (PI3K)-related kinase (PIKK) family. mTOR interacts with other subunits to form two distinct complexes, mTORC1 and mTORC2. mTORC1 coordinates cell growth and metabolism in response to environmental input, including growth factors, amino acid, energy and stress. mTORC2 mainly controls cell survival and migration through phosphorylating glucocorticoid-regulated kinase (SGK), protein kinase B (Akt), and protein kinase C (PKC) kinase families. The dysregulation of mTOR is involved in human diseases including cancer, cardiovascular diseases, neurodegenerative diseases, and epilepsy. Tissue damage caused by trauma, diseases or aging disrupt the tissue functions. Tissue regeneration after injuries is of significance for recovering the tissue homeostasis and functions. Mammals have very limited regenerative capacity in multiple tissues and organs, such as the heart and central nervous system (CNS). Thereby, understanding the mechanisms underlying tissue regeneration is crucial for tissue repair and regenerative medicine. mTOR is activated in multiple tissue injuries. In this review, we summarize the roles of mTOR signaling in tissue regeneration such as neurons, muscles, the liver and the intestine.
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Huang Y, Lu Y, He Y, Feng Z, Zhan Y, Huang X, Liu Q, Zhang J, Li H, Huang H, Ma M, Luo L, Li L. Ikzf1 regulates embryonic T lymphopoiesis via Ccr9 and Irf4 in zebrafish. J Biol Chem 2019; 294:16152-16163. [PMID: 31511326 DOI: 10.1074/jbc.ra119.009883] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/26/2019] [Indexed: 12/16/2022] Open
Abstract
Ikzf1 is a Krüppel-like zinc-finger transcription factor that plays indispensable roles in T and B cell development. Although the function of Ikzf1 has been studied extensively, the molecular mechanism underlying T lymphopoiesis remains incompletely defined during the embryonic stage. Here we report that the genetic ablation of ikzf1 in mutant zebrafish resulted in abrogated embryonic T lymphopoiesis. This was ascribed to impaired thymic migration, proliferation, and differentiation of hematopoietic stem/progenitor cells (HSPCs). Ccr9a and Irf4a, two indispensable factors in T lymphopoiesis, were the direct targets of Ikzf1 and were absent in the ikzf1 mutants. Genetic deletion of either ccr9a or irf4a in the corresponding mutant embryos led to obvious T cell development deficiency, which was mainly caused by disrupted thymic migration of HSPCs. Restoration of ccr9a in ikzf1 mutants obviously promoted HSPC thymus homing. However, the HSPCs then failed to differentiate into T cells. Additional replenishment of irf4a efficiently induced HSPC proliferation and T cell differentiation. Our findings further demonstrate that Ikzf1 regulates embryonic T lymphopoiesis via Ccr9 and Irf4 and provide new insight into the genetic network of T lymphocyte development.
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Luo L, Lee A, Shi W, Kollmeier M, Tsai C, Alektiar K. Underutilization of Adjuvant Radiation in Early Stage High Risk Endometrial Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Patel M, Luo L, Yang T, Yamada Y, Chan T, Beal K. Hypofractionated Stereotactic Radiosurgery (9 Gy x 3) for Intact Brain Metastasis: Excellent Local Control and Very Low Rates of Radiation Necrosis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ding ZJ, Wang GP, Zhang YL, Xie R, Pei GX, Du HY, Wang J, Li G, Hong GZ, Wen J, Wei ZL, Yang J, Luo L, Li H, Huang TY, Wang XQ, Tao YD, Gou YH, Wang G. [Epidemiological survey of mental disorders in the rural left behind elderly aged 60 years and older in Gansu]. ZHONGHUA YI XUE ZA ZHI 2019; 99:2429-2434. [PMID: 31434422 DOI: 10.3760/cma.j.issn.0376-2491.2019.31.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the prevalence, demographic characteristics and social life function of mental disorders in the rural left behind elderly aged 60 years and older in Gansu. Methods: Between November 2017 and June 2018, a multi-stage stratified cluster sampling method was used to randomly select the rural left behind elderly aged 60 years and older in Gansu, and totally 6 000 elderly were enrolled. By using the extended general health questionnaire (GHQ-12) and the American Handbook for Diagnosis and Statistics of Mental Disorders (DSM-Ⅳ) Axis Ⅰ Disorders Formal Clinical Examination Patient Edition, all the included subjects were screened and diagnosed. Functional status was assessed by the Global Assessment Function scale (GAF). Statistical analysis of the prevalence of various mental illnesses, as well as the differences in the prevalence of different gender, marital status and age groups was performed. Results: Totally, 6 000 subjects completed the survey. The adjusted current prevalence of any mental disorder was 20.11% (95%CI 17.70%-22.85%). The six most prevalent specific disorders were major depressive disorder (9.20%), pain disorder (2.71%), mood disorder due to the body condition (2.08%), generalized anxiety disorder (1.99%), anxiety disorder not otherwise specified (1.15%) and dysthymic disorder (0.84%). The lifetime prevalence of mental disorders was 20.54% (95%CI 18.40%-23.39%). The overall current prevalence of mental disorders was higher in women (242.89‰) than in men (119.55‰), and the unmarried (248.37‰) was higher than those married (187.53‰). There was no significant difference in the prevalence of mental disorders among different age groups (P>0.05). The GAF score of mental disorders was 56±11, and 71.82% was moderate to severe functional impairment. Conclusions: The prevalence of mental disorders is high in rural left-behind population aged 60 years and over in Gansu Province. Major depression is a condition that deserves special attention.
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Luo L, Gu Y, Wang X, Zhang Y, Zhan L, Liu J, Yan H, Liu Y, Zhen S, Chen X, Tong R, Song C, He Y. Epidemiological and clinical differences between sexes and pathogens in a three-year surveillance of acute infectious gastroenteritis in Shanghai. Sci Rep 2019; 9:9993. [PMID: 31292502 PMCID: PMC6620335 DOI: 10.1038/s41598-019-46480-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 06/29/2019] [Indexed: 12/19/2022] Open
Abstract
Acute infectious gastroenteritis cases in Shanghai, reported over three years, were analyzed. Pathogens were identified in 1031 patients; of these, 725 and 306 were bacterial and viral cases, respectively. Vibrio parahemolyticus and Salmonella were the dominant bacteria, and Caliciviridae and Reoviridae were the dominant viral families in the local area. The acute gastroenteritis epidemic peaks appeared in August and January, which represented the active peak periods of bacteria and viruses, respectively. Logistic regression analyses with sex stratification showed that abdominal pain, fever and ingestion of unsafe food at restaurants were independent factors more frequently associated with bacterial gastroenteritis irrespective of sex; red cell-positive fecal matter was associated with bacterial gastroenteritis with an odds ratio (OR) of 3.28 only in males; and white blood cell count was associated with bacterial gastroenteritis with an OR of 1.02 only in females. Pathogen stratification showed that age, vomiting and red cell-positive fecal matter were associated with males with ORs of 0.99, 0.61 and 1.71, respectively, in bacterial gastroenteritis; and the migrant ratio was higher in males with an OR of 2.29 only in viral gastroenteritis. In conclusion, although bacterial and viral gastroenteritis shared many features, epidemiological and clinical factors differed between sexes and pathogens.
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Zhou E, Luo L, Ma LJ, Yin J, Tan ZQ, Miao GY, Liu J, Xiao XP. [Diagnostic value of serum miRNA let-7a for laryngeal carcinoma and effects of let-7a on proliferation and apoptosis of laryngeal carcinoma cells]. ZHONGHUA ER BI YAN HOU TOU JING WAI KE ZA ZHI = CHINESE JOURNAL OF OTORHINOLARYNGOLOGY HEAD AND NECK SURGERY 2019; 54:534-539. [PMID: 31315362 DOI: 10.3760/cma.j.issn.1673-0860.2019.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the diagnostic value of serum miRNAlet-7a in laryngeal carcinoma and the effect of let-7a on proliferation and apoptosis of laryngeal carcinoma cells. Methods: Real-time quantitative PCR was used to determine the expression level of serum miRNAlet-7a. The miRNA let-7a mimetic was synthesized and transiently transfected into the laryngeal carcinoma Hep-2 cell line by cationic liposome method. The effects of up-regulation of let-7a expression on laryngeal cancer Hep-2 cells were detected by FCM and MTT assays,respectively. The association of let-7a levels with laryngeal cancer and the diagnostic value for laryngeal cancer were analyzed. Measurement data were taken by t test or analysis of variance; Counting data were analyzed by χ(2) test and Fisher exact probability method. The receiver operating characteristic curve was used to analyze the diagnostic value of let-7a for laryngeal cancer. Results: The relative expression of serum let-7a in healthy subjects was significantly higher than that in patients with laryngeal cancer (0.931±0.094) vs (0.380±0.113) (t=26.507,P<0.01). The relative expressions of serum let-7a in patients with laryngeal cancer before and after surgery were (0.380±0.113) vs(0.493±0.164),with significant difference (t=3.848,P<0.01).The relative expression of serum let-7a was related to lymph node metastasis (t=2.946, P<0.01). There was a positive correlation between the relative expression of let-7a in laryngeal carcinoma and that in serum (r=0.466,P=0.003). After transfection of let-7a mimics, Hep-2 cells showed an increased significant increase in the expression of let-7a (P<0.01), proliferation (P<0.01) and apoptosis (P<0.01). ROC curve analysis showed that the best critical value for relative expression of let-7a in the diagnosis of laryngeal carcinoma was 0.557 with a sensitivity of 0.794,a specificity of 0.727,an area under curve(AUC) of 0.859,and a 95%CI of 0.773-0.926. Conclusions: miRNA let-7a can inhibit the proliferation of laryngeal carcinoma Hep-2 cells and promote apoptosis. Serum let-7a is down-regulated in patients with laryngeal cancer and the level of let-7a is related to lymph node metastasis,which would help early diagnosis and postoperative disease monitoring of laryngeal cancer,but further research is needed.
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Luo B, Luo L. Simultaneous cornual heterotopic and intrauterine pregnancy following in vitro fertilization/embryo transfer: new conservative surgery with laparoscopic lesion resection. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4667.2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Luo L, Sone E, Viswanathan S. Generating biomimetic mineralized collagen scaffolds for bone regeneration. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.03.572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Xiao L, He C, Luo L, Yang K, Yang L, Xu K, Zheng Y, Gu C, Huang Q, Meng H. Genome-wide association study identified genes in the response to Salmonella pullorum infection in chickens. Anim Genet 2019; 50:403-406. [PMID: 31017703 DOI: 10.1111/age.12787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2019] [Indexed: 11/27/2022]
Abstract
Pullorum is a bacterial disease that threatens the modern poultry industry. Over the years, research on this topic has focused mainly on its epidemiology, whereas the hosts' genetic basis of infection is still vague. In order to identify chickens' genes associated with pullorum, we sequenced 300 New Pudong chicken by double digest genotyping-by-sequencing. We obtained 1 527 953 SNPs for a genome-wide association analysis, which identified 43 genome-wide significant markers. Most of the significant SNPs were in the interval of 57.7-59.0 Mb on chromosome 5. The gene set enrichment analysis suggests a potential manner for bacterial infection and remaining inside the host. This work provides basic data for the purification, prevention and treatment of pullorum disease.
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Chen J, He J, Ni R, Yang Q, Zhang Y, Luo L. Cerebrovascular Injuries Induce Lymphatic Invasion into Brain Parenchyma to Guide Vascular Regeneration in Zebrafish. Dev Cell 2019; 49:697-710.e5. [PMID: 31006646 DOI: 10.1016/j.devcel.2019.03.022] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 02/11/2019] [Accepted: 03/22/2019] [Indexed: 12/21/2022]
Abstract
Damage to regional cerebrovascular networks and neuronal tissues occurs during acute cerebrovascular diseases, such as ischemic stroke. The promotion of vascular regeneration is the most promising therapeutic approach. To understand the cellular and molecular mechanisms underlying brain vascular regeneration, we developed two zebrafish cerebrovascular injury models using genetic ablation and photochemical thrombosis. Although brain parenchyma is physiologically devoid of lymphatic vasculature, we found that cerebrovascular injuries induce rapid ingrowth of meningeal lymphatics into the injured parenchyma. The ingrown lymphatics on one hand become lumenized to drain interstitial fluid to resolve brain edema and on the other hand act as "growing tracks" for nascent blood vessels. The ingrown lymphatic vessels undergo apoptosis and clearance after cerebrovascular regeneration. This study reveals a pathological function of meningeal lymphatics, through previously unexpected ingrowth into brain parenchyma and a newly identified lymphatic function as vascular "growing tracks."
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145
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Zhou JJ, Luo L. [Hypersomnia and syncope as initial manifestations of neuromyelitis optica spectrum disorder: a case report]. ZHONGHUA NEI KE ZA ZHI 2019; 58:309-311. [PMID: 30917426 DOI: 10.3760/cma.j.issn.0578-1426.2019.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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146
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Li Q, Luo L, Lu X, Ji X, Ji D, Feng H, Jiang S. PROTEOMIC ANALYSIS OF SERUM PROTEINS AT THE ONSET OF ARDS IN PATIENTS. Chest 2019. [DOI: 10.1016/j.chest.2019.02.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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147
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Sun D, Chen J, Hu H, Lin S, Jin L, Luo L, Yan X, Zhang C. Acanthopanax senticosus polysaccharide suppressing proliferation and metastasis of the human non-small cell lung cancer NCI-H520 cells is associated with Wnt/β-catenin signaling. Neoplasma 2019; 66:555-563. [PMID: 30943746 DOI: 10.4149/neo_2018_180913n689] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/15/2019] [Indexed: 11/08/2022]
Abstract
Lung cancer (LC) is the highest lethality in all tumors. Non-small cell lung cancer (NSCLC) accounts for about 80% of all LC. Acanthopanax senticosus polysaccharide (ASPS) is extracted from the root of Acanthopanax senticosus (AS). Herein, we examined the effect and molecular mechanism of ASPS on NSCLC. The proliferation, invasion and migration of NCI-H520 cells were detected by cell counting kit-8 (CCK-8), transwell assay and wound healing assay, respectively. The epithelial-mesenchymal transition (EMT) and Wnt/β-catenin pathway-related factors were evaluated using quantitative real-time PCR (QRT-PCR) and western blot assay. Our results observed that ASPS significantly decreased the proliferation of cells at 24 and 48 h. Moreover, ASPS markedly repressed the invasion and migration capacities of cells in a concentration-dependent manner. Besides, ASPS obviously down-regulated the levels of matrix metalloproteinase-2 (MMP-2), MMP-9, fibronectin 1 (FN1), vimentin, wnt3a, phosphorylated-glycogen synthase kinase 3β (p-GSK3β) and cyclin D1, whereas, up-regulating E-cadherin level. The level of GSK3β was not changed in the different groups. ASPS conspicuously inhibited the abilities of proliferation and metastasis in human non-small cell lung cancer cell line NCI-H520 possibly by suppressing Wnt/β-catenin pathway mediated-EMT.
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148
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Robins JMW, Luo L, Mallallah F, Timothy J, Pal D, Derham C, Selvanathan SK. P76 Skip laminectomy versus cervical laminectomy, an analysis of patient reported outcomes, spinal alignment and re-operation rates: the leeds spinal unit experience (2008–2016). J Neurol Psychiatry 2019. [DOI: 10.1136/jnnp-2019-abn.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
ObjectivesTo compare clinical, radiological and complication results between skip laminectomy and cervical laminectomy for posterior cervical decompression for cervical spondylotic myelopathy.DesignRetrospective single institution cohort study.SubjectsSubjects underwent primary skip or cervical laminectomy between 2008–2016.MethodsStatistical analysis compared pre- and post-operative differences in Visual Analogue Scale, Neck Disability Index and radiological differences in sagittal alignment of the vertebral bodies. Analysis of re-operation rates was performed.ResultsA total of 42 and 29 patients had skip and cervical laminectomy respectively. Median follow up was 32±23.1 (Range: 1–325) weeks. Post-operatively there was no difference in patient reported outcomes namely Visual Analogue Scale and Neck Disability Index between skip laminectomy and cervical laminectomy groups compared to pre-operatively (p=0.64, p=0.75). No difference was seen in sagittal alignment between both groups following surgery (p=0.65). Three patients (7.1%) in the skip laminectomy group and two patients (6.9%) in the cervical laminectomy group required revision surgery to the cervical spinal region at a different level to the original surgery. No patients needed further instrumentation.ConclusionsBoth skip laminectomy and cervical laminectomy appear to deliver similar outcomes with regards to patient reported outcomes, preserving sagittal alignment and re-operation rates over this short follow-up period.
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149
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Arcand S, Luo L, Zhong S, Pei L, Bian X, Winkler J. Modeled changes to the Great Plains low-level jet under a realistic irrigation application. ATMOSPHERIC SCIENCE LETTERS : ASL 2019; 20:e888. [PMID: 31191173 PMCID: PMC6555437 DOI: 10.1002/asl.888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 06/09/2023]
Abstract
Low-level jets (LLJs) are relatively fast-moving streams of air that form in the lower troposphere and are a common phenomenon across the Great Plains (GP) of the United States. LLJs play an important role in moisture transport and the development of nocturnal convection in the spring and summer. Alterations to surface moisture and energy fluxes can influence the planetary boundary layer (PBL) development and thus LLJs. One important anthropogenic process that has been shown to affect the surface energy budget is irrigation. In this study, we investigate the effects of irrigation on LLJ development across the GP by incorporating a dynamic and realistic irrigation scheme into the Weather Research and Forecasting (WRF) model. WRF simulations were conducted with and without the irrigation scheme for the exceptionally dry summer of 2012 over the GP. The results show irrigation-introduced changes to LLJ features both over and downstream of the most heavily irrigated regions in the GP. There were statistically significant increases to LLJ speeds in the simulation with the irrigation parameterization. Decreases to the mean jet core height on the order of 50 m during the overnight hours were also simulated when irrigation was on. The overall frequency of jet occurrences increased over the irrigated regions by 5-10%; however, these differences were not statistically significant. These changes were weaker than those reported in earlier studies based on simple representations of irrigation that unrealistically saturate the soil columns over large areas over a long period of time, which highlights the importance and necessity to represent human activity more accurately in modeling studies.
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150
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Zhang ZM, Lai YR, Li QC, Luo L, Liu RR, Shi LL, Liu LJ. [Clinical analysis of autoimmune hemolytic anemia after allogeneic hematopoietic stem cell transplantation in thalassemia major]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2019; 39:908-911. [PMID: 30486586 PMCID: PMC7342357 DOI: 10.3760/cma.j.issn.0253-2727.2018.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
目的 探讨重型地中海贫血(地贫)患者异基因造血干细胞移植(allo-HSCT)后并发自身免疫性溶血性贫血(AIHA)诊断、治疗及转归,以提高地贫患者造血干细胞移植疗效。 方法 回顾性分析2007年7月至2017年12月共计291例行allo-HSCT重型地贫患者的临床资料。 结果 重型地贫allo-HSCT后AIHA发生率为1.72%(5/291);AIHA中位发生时间为移植后7(5~12)个月,5例移植后AIHA患者直接和间接Coombs试验均阳性,患者主要表现为头晕、乏力、面色苍白、皮肤巩膜黄染、酱油色尿。228例HLA相合同胞供者移植患者有1例(0.43%)移植后发生AIHA,而63例非亲缘供者移植患者有4例(6.36%)移植后发生AIHA。非亲缘供者移植患者AIHA发生率高于HLA相合同胞供者移植患者。1例患者单用泼尼松治疗死亡,4例患者采用甲泼尼龙联合利妥昔单抗治疗有效,目前生存良好,其中2例Coombs试验转阴。 结论 该组重型地贫患者allo-HSCT后AIHA发生率为1.72%,Coombs试验有助于诊断移植后AIHA,非亲缘供者移植病例移植后AIHA发生率高于HLA相合同胞供者移植组,利妥昔单抗联合糖皮质激素是治疗重型地贫allo-HSCT后AIHA的有效方法。
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