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1.
Phys Chem Chem Phys ; 25(20): 13864-13876, 2023 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-37183450

RESUMO

Recently, novel 2D InGeTe3 has been successfully synthesized and attracted attention due to its excellent properties. In this study, we investigated the mechanical properties and transport behavior of InGeX3 (X = S, Se and Te) monolayers using density functional theory (DFT) and machine learning (ML). The key physical parameters related to mechanical properties, including Poisson's ratio, elastic modulus, tensile strength and critical strain, were revealed. Using a ML method to train DFT data, we developed a neuroevolution-potential (NEP) to successfully predict the mechanical properties and lattice thermal conductivity. The fracture behavior predicted using NEP-based MD simulations in a large supercell containing 20 000 atoms could be verified using DFT. Due to the effects of size, these predicted physical parameters have a slight difference between DFT and ML methods. At 300 K, these monolayers exhibited a low thermal conductivity with the values of 13.27 ± 0.24 W m-1 K-1 for InGeS3, 7.68 ± 0.30 W m-1 K-1 for InGeSe3, and 3.88 ± 0.09 W m-1 K-1 for InGeTe3, respectively. The Boltzmann transport equation (BTE) including all electron-phonon interactions was used to accurately predict the electron mobility. Compared with InGeS3 and InGeSe3, the InGeTe3 monolayer showed flexible mechanical behavior, low thermal conductivity and high mobility.

2.
Molecules ; 27(23)2022 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-36500294

RESUMO

Red ginseng (RG), which is obtained from heated Panax ginseng and is produced by steaming followed by drying, is a valuable herb in Asian countries. Steamed ginseng dew (SGD) is a by-product produced in processing red ginseng. In the present study, phytochemical profiling of extracts of red ginseng and steamed ginseng dew was carried out using gas chromatography-mass spectrometry (GC-MS) and rapid resolution liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry (RRLC-Q-TOF-MS) analysis. Additionally, antioxidant activities (DPPH, ·OH, and ABTS scavenging ability) and whitening activities (tyrosinase and elastase inhibitory activity) were analyzed. Phytochemical profiling revealed the presence of 66 and 28 compounds that were non-saponin components in chloroform extracts of red ginseng and steamed ginseng dew (RG-CE and SGD-CE), respectively. Meanwhile, there were 20 ginsenosides identified in n-butanol extracts of red ginseng and steamed ginseng dew (RG-NBE and SGD-NBE). By comparing the different polar extracts of red ginseng and steamed ginseng dew, it was found that the ethyl acetate extract of red ginseng (RG-EAE) had the best antioxidant capacity and whitening effect, the water extract of steamed ginseng dew (SGD-WE) had stronger antioxidant capacity, and the SGD-NBE and SGD-CE had a better whitening effect. This study shows that RG and SGD have tremendous potential to be used in the cosmetic industries.


Assuntos
Cosméticos , Ginsenosídeos , Panax , Antioxidantes/farmacologia , Antioxidantes/análise , Cromatografia Líquida de Alta Pressão/métodos , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Panax/química , Ginsenosídeos/química , Cosméticos/análise , Vapor
3.
Microsc Microanal ; 27(1): 227-235, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33353579

RESUMO

Interstitial cells of Cajal (ICC) play an essential role in the motility of the gastrointestinal tract, and they have been identified in many laboratory animals and in humans. However, the information of ICC in lower animals is still very limited. In the present study, ICC were identified in the gastric muscularis mucosae of an amphibian­the Chinese giant salamander, by c-Kit immunohistochemistry and transmission electron microscopy. ICC showed c-Kit immunoreactivity and had spindle-shaped cell bodies and 1­2 long processes. ICC were located between smooth muscle cells (SMC) in gastric muscularis mucosae. Ultrastructurally, ICC appeared as polygon-, spindle-, and awl-shaped with long cytoplasmic prolongations between SMC. ICC had distinctive characteristics, such as nuclei with peripheral electron-dense heterochromatin, caveolae, and abundant intracytoplasmatic vacuoles, mitochondria, and rough endoplasmic reticula. Moreover, lamellar bodies and two types of condensed granules were observed in the cytoplasm of ICC. Notably, ICC establish close contacts with each other. Moreover, ICC establish gap junctions with SMC. In addition, ICC were frequently observed close to nerve fibers. In summary, the present study demonstrated the presence of ICC in the gastric muscularis mucosae of the Chinese giant salamander.


Assuntos
Células Intersticiais de Cajal , Miócitos de Músculo Liso , Fibras Nervosas , Animais , China , Células Intersticiais de Cajal/ultraestrutura , Mucosa/citologia , Miócitos de Músculo Liso/ultraestrutura , Fibras Nervosas/ultraestrutura , Urodelos
4.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 43(6): 991-994, 2021 Dec 30.
Artigo em Zh | MEDLINE | ID: mdl-34980343

RESUMO

We reported a case of irreducible indirect inguinal hernia caused by sigmoid colon cancer entering the right groin.The patient complained about a right groin mass for more than 60 years with progressive enlargement for 3 years and pain for half a month.Abdominal CT examination at admission showed rectum and sigmoid colon hernia in the right inguinal area and thickening of sigmoid colon wall.Electronic colonoscopy and pathological diagnosis showed sigmoid colon cancer.Therefore,the result of preliminary diagnosis was irreducible indirect inguinal hernia caused by sigmoid colon cancer entering the right groin.We converted laparoscopic exploration to laparotomy followed by radical sigmoidectomy and employed end-to-end anastomosis of descending colon and rectum in combination with repair of right inguinal hernia.The patient recovered well after operation and was discharged.


Assuntos
Hérnia Inguinal , Laparoscopia , Neoplasias do Colo Sigmoide , Colo Sigmoide/diagnóstico por imagem , Colo Sigmoide/cirurgia , Virilha , Hérnia Inguinal/diagnóstico por imagem , Hérnia Inguinal/cirurgia , Humanos , Neoplasias do Colo Sigmoide/complicações , Neoplasias do Colo Sigmoide/cirurgia
5.
Zhongguo Zhong Yao Za Zhi ; 44(7): 1485-1490, 2019 Apr.
Artigo em Zh | MEDLINE | ID: mdl-31090308

RESUMO

Through literature review, it was found that there were many literature reports on the effect of single-herb traditional Chinese medicine for lowering uric acid in comparison with other single-herb traditional Chinese medicines. Then what is the relationship between single-herb traditional Chinese medicines for eliminating dampness and uric acid? How do they play a role in lowering uric acid? In this study, traditional Chinese medicines for eliminating dampness in the 2015 Chinese Pharmacopoeia and the innovative textbook of Clinical Chinese Pharmacy for Chinese medicine colleges and universities in the new century were selected as the research objects, and articles about the effect of single-herb traditional Chinese medicines for eliminating dampness in the treatment of hyperuricemia were searched through CNKI, WanFang and VIP. Afterwards, Excel(2016) was used to establish a database, and Excel screening tool was used to extract the classification statistics of its uric acid lowering effect, pharmacodynamic sites, uric acid lowering pathway and mechanism, so as to clarify the relationship between single-herb traditional Chinese medicines for eliminating dampness and uric acid as well as their mechanism on lowering uric acid. The results showed that there were 16 kinds of traditional Chinese medicines with uric acid lowering effect, accounting for 23.88% of the 67 kinds of traditional Chinese medicines for eliminating dampness. Other medicines with the uric acid lowering effect included traditional Chinese medicine extracts and chemical components. The main ways of reducing uric acid included: inhibiting uric acid synthesis and promoting uric acid excretion; mechanism of action was mainly regulating the two key enzymes generated by uric acid and the ion transporters excreted by uric acid. Therefore, it can be seen that this kind of traditional Chinese medicines have a clear effect in reducing uric acid, providing new ideas for drug screening, prescription compatibility and target determination for the treatment of hyperuricemia as well as a theoretical basis for the clinical treatment and research of hyperuricemia.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Hiperuricemia/tratamento farmacológico , Ácido Úrico/metabolismo , Humanos , Medicina Tradicional Chinesa
6.
Org Biomol Chem ; 15(4): 845-851, 2017 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-28009929

RESUMO

ortho-Phenylene oligomers fold into compact helical conformations in solution, and have therefore recently emerged as a class of foldamers. Previous work has shown that their folding is controlled by arene-arene stacking interactions parallel to the helical axis. Such interactions might reasonably be expected to be sensitive to solvent, but little is known of solvent effects in this system. Here, we report on the behavior of a representative set of o-phenylene oligomers in solvents ranging from non-polar (benzene) to polar and protic (methanol and water). The oligomers have been synthesized using post-oligomerization functionalization by click chemistry. Their folding is good in all solvents studied, but becomes measurably worse as the dielectric constant of the solvent increases. Thus, in contrast to the behavior of many other classes of aromatic foldamers, the folding propensity of o-phenylenes does not appear to be strongly affected by the solvophobic effect. Instead, the greater polarity of "frayed end" states governs their behavior.

7.
J Org Chem ; 79(19): 9009-17, 2014 Oct 03.
Artigo em Inglês | MEDLINE | ID: mdl-25185081

RESUMO

A new shape-persistent macrocycle comprising two 2,3-triphenylene moieties bridged by m-phenylene ethynylenes has been synthesized. UV-vis and fluorescence spectroscopies indicate limited interaction between the two triphenylene units. The compound, which has a pronounced oblong shape (the core measures approximately 2.2 × 1.0 nm), aggregates in CDCl3 and toluene-d8 to give stacked dimers, as indicated by the (1)H NMR signals corresponding to protons on or near the core, which shift upfield with increasing concentration. These changes in NMR shielding were modeled using DFT calculations on candidate dimer geometries. The best match to the experimental data was obtained for a dimer consisting of arene-arene stacking by 3.6 Å (on average) with a displacement along the molecular long axis of 3.5-4.0 Å. This displacement is larger than can be explained by the electronic effects of aromatic stacking interactions. Instead, the minimization of steric interactions between the side chains appears to control the dimer geometry, with the alkoxy groups of one molecule sliding into registry with the gaps along the periphery of the other. Such lateral displacement (as opposed to rotation) is a direct consequence of the extended oval shape of the compound.

8.
Chin Med J (Engl) ; 2024 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-38311810

RESUMO

BACKGROUND: Tracheal, bronchus, and lung cancer (TBL) is a major cause of mortality and top contributor to productivity loss in large emerging economies such as the BRICS (Brazil, Russia, India, China, and South Africa). We examined the time trends of TBL mortality across the BRICS to better understand the disease burden in these countries and inform public health and healthcare resource allocation. METHODS: TBL mortality-related data between 1990 and 2019 were obtained from the Global Burden of Disease Study 2019 and analyzed using age-period-cohort models. Net drift (local drift) was used to describe the expected age-adjusted TBL mortality rate over time overall (each age group); the longitudinal age curve was used to reflect the age effect; the period rate ratios (RRs) were used to reflect the period effect; and the cohort RR was used to reflect the cohort effect. RESULTS: In 2019, there were 958.3 thousand TBL deaths across the BRICS, representing 46.9% of the global TBL deaths. From 1990 to 2019, the age-standardized mortality rate (ASMR) of TBL decreased in Russia, Brazil, and South Africa while increased in China and India, with the largest reduction reported in Russia (-29.6%) and the largest increase in China (+22.4%). India showed an overall increase (+15.7%) in TBL mortality but the mortality risk decreased among individuals born after 1990 (men) and 1995 (women). Although South Africa and Brazil experienced an overall decline in TBL mortality, their recent birth cohorts, such as Brazilian individuals born after 1985 (men) and 1980 (women), and South African men born after 1995, had an increasing TBL mortality risk. China has experienced an overall increase in TBL mortality, with the mortality risk rising among individuals born after 1995 for both men and women. Russia, which had the highest TBL mortality among the BRICS countries in 1990, has demonstrated significant improvement over the past three decades. CONCLUSIONS: Over the past 30 years, the BRICS accounted for an increasing proportion of global TBL mortality. TBL mortality increased in older women in all the BRICS countries except Russia. Among the recent birth cohort, the risk of TBL mortality increased in Brazil, China, and South Africa. More effective efforts are needed in the BRICS to reduce the burden of TBL and help achieve the United Nation's Sustainable Development Goals.

9.
Joint Bone Spine ; 91(4): 105728, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38580102

RESUMO

OBJECTIVE: Systemic Lupus Erythematosus (SLE) is an autoimmune disease that occurs at higher rates in young women. Evidence suggests that SLE may be associated with ovarian dysfunction. Therefore, it is crucial to investigate the possible effects of SLE on ovarian reserve function. METHODS: PubMed, Embase, Web of Science, Scopus, Cochrane Library, and ClinicalTrials.gov databases were searched from inception to July 2023 to identify studies that compared ovarian reserve in patients with SLE to that of healthy individuals. The study examined anti-müllerian hormone (AMH), antral follicle count (AFC), and follicle-stimulating hormone (FSH) as outcomes. RESULTS: Thirteen studies (n=1017) were eligible for meta-analysis. Females with SLE had significantly lower levels of AMH (weighted mean difference [WMD]: -1.07, 95% confidence interval [CI]: -1.37 to -0.76, P<0.001) and AFC (WMD: -3.46, 95% CI: -4.57 to -2.34, P<0.001). There was no significant difference in FSH levels. Subgroup analyses by age of onset revealed that SLE patients with adult-onset had significantly lower AMH levels (WMD: -1.44, 95% CI: -1.71 to -1.18, P<0.001), lower AFCs (WMD: -3.11, 95% CI: -3.60 to -2.61, P<0.001) and higher FSH levels (WMD: 0.60, 95% CI: 0.15 to 1.05, P<0.01). However, SLE patients with juvenile-onset did not exhibit significant differences in their AMH and FSH levels, except for AFCs (WMD: -7.27, 95% CI: -12.39 to -2.14, P<0.01). CONCLUSION: The impact of SLE on ovarian reserve is significant, and the effect may be particularly severe in cases of adult-onset SLE.


Assuntos
Hormônio Antimülleriano , Lúpus Eritematoso Sistêmico , Reserva Ovariana , Humanos , Lúpus Eritematoso Sistêmico/fisiopatologia , Lúpus Eritematoso Sistêmico/sangue , Reserva Ovariana/fisiologia , Feminino , Hormônio Antimülleriano/sangue , Hormônio Foliculoestimulante/sangue , Adulto
10.
Biochim Biophys Acta Mol Cell Res ; 1871(5): 119716, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38547933

RESUMO

BACKGROUND: The carcinogenic transcription factor c-Myc is the most aggressive oncogene, which drive malignant transformation and dissemination of triple-negative breast cancer (TNBC). Recruitment of many cofactors, especially WDR5, a protein that nucleates H3K4me chromatin modifying complexes, play a pivotal role in regulating c-Myc-dependent gene transcription, a critical process for c-Myc signaling to function in a variety of biological and pathological contexts. For this reason, interrupting the interaction between c-Myc and the transcription cofactor WDR5 may become the most promising new strategy for treating c-Myc driven TNBC. METHODS: Immunoprecipitation and mass spectrometry (IP-MS) is used to screen proteins that bind c-Myc/WDR5 interactions. The interaction of METTL3 with c-Myc/WDR5 in breast cancer tissues and TNBC cells was detected by Co-IP and immunofluorescence. Subsequently, we further analyzed the influence of METTL3 expression on c-Myc/WDR5 protein expression and its interaction stability by Western blot and Co-IP. The correlation between METTL3 and c-Myc pathway was analyzed by ChIP-seq sequencing and METTL3 knockdown transcriptome data. The effect of METTL3 expression on c-Myc transcriptional activity was detected by ChIP-qPCR and Dual Luciferase Reporter. At the same time, the overexpression vector METTL3-MUT (m6A) was constructed, which mutated the methyltransferase active site (Aa395-398, DPPW/APPA), and further explored whether the interaction between METTL3 and c-Myc/WDR5 was independent of methyltransferase activity. In addition, we also detected the changes of METTL3 expression on TNBC's sensitivity to small molecule inhibitors such as JQ1 and OICR9429 by CCK8, Transwell and clonal formation assays. Finally, we further verified our conclusions in spontaneous tumor formation mouse MMTV-PyMT and nude mouse orthotopic transplantation tumor models. RESULTS: METTL3 was found to bind mainly to c-Myc/WDR5 protein in the nucleus. It enhances the stability of c-Myc/WDR5 interaction through its methyltransferase independent mechanism, thereby enhancing the transcriptional activity of c-Myc on downstream glucose metabolism genes. Notably, the study also confirmed that METTL3 can directly participate in the transcription of glucose metabolism genes as a transcription factor, and knockdown METTL3 enhances the drug sensitivity of breast cancer cells to small molecule inhibitors JQ1 and OICR9429. The study was further confirmed by spontaneous tumor formation mouse MMTV-PyMT and nude mouse orthotopic transplantation tumor models. CONCLUSION: METTL3 binds to the c-Myc/WDR5 protein complex and promotes glycolysis, which plays a powerful role in promoting TNBC progression. Our findings further broaden our understanding of the role and mechanism of action of METTL3, and may open up new therapeutic avenues for effective treatment of TNBC with high c-Myc expression.


Assuntos
Glicólise , Metiltransferases , Proteínas Proto-Oncogênicas c-myc , Neoplasias de Mama Triplo Negativas , Animais , Feminino , Humanos , Camundongos , Linhagem Celular Tumoral , Regulação Neoplásica da Expressão Gênica , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Peptídeos e Proteínas de Sinalização Intracelular/genética , Metiltransferases/metabolismo , Metiltransferases/genética , Camundongos Nus , Proteínas Proto-Oncogênicas c-myc/metabolismo , Proteínas Proto-Oncogênicas c-myc/genética , Neoplasias de Mama Triplo Negativas/metabolismo , Neoplasias de Mama Triplo Negativas/genética , Neoplasias de Mama Triplo Negativas/patologia
11.
Genes (Basel) ; 14(6)2023 06 18.
Artigo em Inglês | MEDLINE | ID: mdl-37372467

RESUMO

The coconut (Cocos nucifera L.) is a commercial crop widely distributed among coastal tropical regions. It provides millions of farmers with food, fuel, cosmetics, folk medicine, and building materials. Among these, oil and palm sugar are representative extracts. However, this unique living species of Cocos has only been preliminarily studied at molecular levels. Benefiting from the genomic sequence data published in 2017 and 2021, we investigated the transfer RNA (tRNA) modifications and modifying enzymes of the coconut in this survey. An extraction method for the tRNA pool from coconut flesh was built. In total, 33 species of modified nucleosides and 66 homologous genes of modifying enzymes were confirmed using a nucleoside analysis using high-performance liquid chromatography combined with high-resolution mass spectrometry (HPLC-HRMS) and homologous protein sequence alignment. The positions of tRNA modifications, including pseudouridines, were preliminarily mapped using a oligonucleotide analysis, and the features of their modifying enzymes were summarized. Interestingly, we found that the gene encoding the modifying enzyme of 2'-O-ribosyladenosine at the 64th position of tRNA (Ar(p)64) was uniquely overexpressed under high-salinity stress. In contrast, most other tRNA-modifying enzymes were downregulated with mining transcriptomic sequencing data. According to previous physiological studies of Ar(p)64, the coconut appears to enhance the quality control of the translation process when subjected to high-salinity stress. We hope this survey can help advance research on tRNA modification and scientific studies of the coconut, as well as thinking of the safety and nutritional value of naturally modified nucleosides.


Assuntos
Cocos , Nucleosídeos , Cocos/genética , Cocos/química , Cocos/metabolismo , Genômica/métodos , Perfilação da Expressão Gênica , RNA de Transferência/genética , RNA de Transferência/metabolismo
12.
Pathogens ; 12(10)2023 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-37887759

RESUMO

Toxoplasma gondii is an opportunistic pathogenic protozoan that can infect all nucleated cells in almost all warm-blooded animals, including humans. T. gondii infection has been reported in many food animals worldwide. However, the prevalence and genotypes of T. gondii in chickens from farmers' markets in Fujian province in southeastern China remain unreported. In the present study, four tissue samples from each of the 577 chickens (namely, the heart, liver, lungs, and muscles) were collected from farmers' markets in five regions of Fujian province (Zhangzhou, Sanming, Quanzhou, Fuzhou, and Longyan). We first analyzed the prevalence and genotypes of T. gondii using PCR targeting of the B1 gene of T. gondii. Of the 577 chickens, thirty-two (5.5%) tested positive for the B1 gene. Among the five regions, Sanming had the highest infection rate (16.8%, 16/95), followed by Quanzhou (8.0%, 8/100), Longyan (5.0%, 5/100), Zhangzhou (1.1%, 2/182), and Fuzhou (1.0%, 1/100). Among these thirty-two T. gondii-positive chickens, the infection rates of the lungs, heart, liver, and muscles were 68.8% (22/32), 34.4% (11/32), 28.1% (9/32), and 9.4% (3/32), respectively. Significant differences in prevalence were found among the different regions (χ2 = 35.164, p < 0.05) and tissues (χ2 = 25.874, p < 0.05). A total of 128 tissue and organ samples of the thirty-two T. gondii-positive chickens from the different regions were analyzed using PCR-restriction fragment length polymorphism (PCR-RFLP) on the basis of 10 genetic markers. Seven tissue samples (lung samples from five chickens, heart samples from one chicken, and liver samples from one chicken) underwent successful amplification at all the genetic markers, and all the T. gondii genotypes were identified as genotype I (ToxoDB #10). These findings serve as a foundation for evaluating the risk of T. gondii contamination in chicken products intended for human consumption and offer insight into preventing the transmission of the parasite from chickens to humans.

13.
Parasite ; 30: 51, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38015007

RESUMO

Giardia duodenalis is a common intestinal protozoan that can cause diarrhea and intestinal disease in animals and in humans. However, the prevalence and assemblages of G. duodenalis in pigs from Guangxi Zhuang Autonomous Region have not been reported. In this study, a total of 724 fecal samples (201 from nursery pigs, 183 from piglets, 175 from breeding pigs, and 165 from fattening pigs) were obtained in four areas of the region (Nanning, Yulin, Hezhou, and Guigang). The gene of the small subunit ribosomal RNA (SSU rRNA) of G. duodenalis was amplified by nested PCR. The results show that the prevalence of G. duodenalis in pigs was 3.59% (26/724), of which 14 samples belonged to assemblage A (53.85%) and 12 samples belonged to assemblage E (46.15%). The infection rates of G. duodenalis in Hezhou, Yulin, Nanning, and Guigang were 0%, 0.7%, 10.8% and 1.1%, respectively (χ2 = 45.616, p < 0.01); whereas 5.1% of breeding pigs, 6.0% of piglets, 2.4% of fattening pigs, and 1.0% of nursery pigs were infected with G. duodenalis (χ2 = 8.874, p < 0.05). The SSU rRNA-positive samples were amplified by PCR based on the ß-giardin (bg), glutamate dehydrogenase (gdh), and triphosphate isomerase (tpi) genes. Ten, eight and seven positive samples were detected, respectively. Based on phylogenetic analysis of the three genetic loci sequences, a multilocus genotyping A1 was found. The findings of this study provide basic data for the development of prevention and control of G. duodenalis infections in pigs and humans in the Guangxi Zhuang Autonomous Region.


Title: Premier rapport sur la prévalence et l'analyse des assemblages de Giardia duodenalis chez les porcs de la région autonome Zhuang du Guangxi, dans le sud de la Chine. Abstract: Giardia duodenalis est un protozoaire intestinal commun qui peut provoquer des diarrhées et des maladies intestinales chez les animaux et les humains. Cependant, la prévalence et les assemblages de G. duodenalis chez les porcs de la région autonome Zhuang du Guangxi n'ont pas été rapportés. Dans cette étude, un total de 724 échantillons fécaux (201 provenant de jeunes porcelets, 183 de porcelets, 175 de porcs reproducteurs et 165 de porcs à l'engrais) ont été obtenus dans quatre zones de la région (Nanning, Yulin, Hezhou et Guigang). Le gène de la petite sous-unité de l'ARN ribosomal (ARNr SSU) de G. duodenalis a été amplifié par PCR nichée. Les résultats ont montré que la prévalence de G. duodenalis chez les porcs était de 3,59 % (26/724), dont 14 échantillons appartenaient à l'assemblages A (53,85 %) et 12 échantillons à l'assemblage E (46,15 %). Les taux d'infection par G. duodenalis à Hezhou, Yulin, Nanning et Guigang étaient respectivement de 0, 0,7 %, 10,8 % et 1,1 % (χ2 = 45,616, p < 0,01), alors que 5,1 % des porcs reproducteurs, 6,0 % des porcelets, 2,4 % de porcs à l'engrais et 1,0 % des jeunes porcelets étaient infectés par G. duodenalis (χ2 = 8,874, p < 0,05). Les échantillons positifs pour l'ARNr SSU ont été amplifiés par PCR basée sur les gènes de la ß-giardine (bg), de la glutamate déshydrogénase (gdh) et de la triphosphate isomérase (tpi), et dix, huit et sept échantillons positifs ont été détectés, respectivement. Sur la base de l'analyse phylogénétique des trois séquences de loci génétiques, un génotypage multilocus A1 a été trouvé. Les résultats de cette étude fournissent des données de base pour le développement de la prévention et du contrôle des infections à G. duodenalis chez les porcs et les humains dans la région autonome Zhuang du Guangxi.


Assuntos
Giardia lamblia , Giardíase , Humanos , Animais , Suínos , Giardia lamblia/genética , Giardíase/epidemiologia , Giardíase/veterinária , Filogenia , Prevalência , Tipagem de Sequências Multilocus , Genótipo , China/epidemiologia , Proteínas de Protozoários/genética , Sus scrofa , Fezes , RNA Ribossômico
14.
Am J Cancer Res ; 13(7): 3185-3202, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37560008

RESUMO

Transforming Growth factor-ß (TGF-ß)/Smad signaling is a complex regulatory network that both inhibits and promotes tumorigenesis. However, the mechanisms underlying the function of TGF-ß/Smad signaling pathway remain to be fully elucidated. As a methyltransferase, METTL3 is closely related to tumor development, but the role of METTL3 in the proliferation and metastasis of TGF-ß/Smad-activated gastric cancer (GC) is unclear. In this study, we identified TGF-ß/Smad2/3 axis as an important carcinogenic pathway in GC, which significantly promoted the proliferation and metastasis of GC. Furthermore, we found that Smad3 mRNA could be modified by m6A, which was subsequently recognized and stabilized by IGF2BP2, thereby enhancing Smad3 protein expression and promoting the activation of TGF-ß/Smad pathway. Importantly, we also found that METTL3 could combine with p-Smad3 to regulate the transcription of downstream target genes. Therefore, this study revealed a novel mechanism by which METTL3 synergistically regulates TGF-ß/Smad2/3 signaling and provide a new potential therapeutic target for the treatment of GC.

15.
Am J Cancer Res ; 13(7): 2948-2968, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37560007

RESUMO

Recent studies have suggested that ubiquitin-conjugating enzyme E2D1 (UBE2D1) is involved in tumor progression. In this study, we found that UBE2D1 expression was upregulated in breast cancer (BC) and was related to the prognosis of BC patients. Through in vitro and in vivo experiments, we demonstrated the aberrant expression of UBE2D1 promoted the proliferation and migration of BC cells, and the IGF2BP2-mediated N6-methyladenosine (m6A) modification increased the stability of UBE2D1 mRNA. Mechanistically, UBE2D1 expression regulated the activity of TGF-ß signaling through modulating the expression and the phosphorylation level of Smad2/3. Furthermore, UBE2D1 directly bound to Smad2/3 and affected the subsequent binding of Smad2 and Smad3, which is a necessary step for TGF-ß signaling activation. Thus, our study reveals a pro-oncogenic role of UBE2D1 in the progression of BC and may provide novel strategies for BC treatment.

16.
Curr Res Food Sci ; 5: 2125-2134, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36387603

RESUMO

The effects of different food source proteins on the growth characteristics and intestinal adhesion of Lactobacillus plantarum 45 (LP45) were investigated by adding Ilisha elongata protein, soy protein and whey protein to the probiotic bacteria in vitro and using a probiotic adhesion model based on mouse intestinal tissues. Ilisha elongata protein and soy protein significantly reduced the growth time of LP45 and increased the total number of colonies fermented by LP45; whey protein only reduced the growth time of LP45; the effect of the three food source proteins on the acid production capacity of LP45 was small. These showed that the three food-derived proteins promoted the proliferation and adhesion of probiotics in the intestine, which were beneficial to the active role of intestinal probiotics and improved the intestinal microenvironment.

17.
J Microsc Ultrastruct ; 10(1): 20-22, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35433261

RESUMO

Background: The Yugan blackbone fowl (YBF) is a special poultry with hyperpigmentation in various organs, including feather. However, the mechanism of hyperpigmentation is limited, and the melanic information of other organs except skin is rare. Aims and Objectives: In this study, we attempt to get an insight of the mechanism of melanogenesis of birds. Materials and Methods: The mesencephalon of YBF was observed by light microscopy with hematoxylineosin and tyrosine hydroxylase (TH) immunohistochemistry. Results: The TH immunopositive cells were found in the mesencephalon. Moreover, the melanin was also observed in the connective tissue of the mesencephalon. Conclusion: Our results confirmed the existence of melanin andTH immunopositive cells in the mesencephalon of YBF. These results provide a reference for further study on the mechanism of melanogenesis/hyperpigmentation in birds.

18.
Stem Cell Res ; 62: 102801, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35609349

RESUMO

Human induced pluripotent stem cells (iPSC) resemble human embryonic stem cells with potential to differentiate into cells of all adult tissues. Nonetheless human iPSCs may have an epigenetic memory of their donor tissue origin, are easier to differentiate to those lineages, and their potential to other cell fates can be controlled. We generated a human iPSC line CIBi011-A from amniocytes of a healthy fetus. CIBi011-A serves as a useful source to investigate the epigenetic memory of iPSCs. As an iPSC line from a healthy donor, this line can also serve as a potential cell source from which to develop stem cell-based cell therapies.


Assuntos
Células-Tronco Pluripotentes Induzidas , Adulto , Diferenciação Celular , Epigenômica , Feto , Humanos , Células-Tronco Pluripotentes Induzidas/metabolismo , Transplante de Células-Tronco
19.
Food Chem X ; 13: 100206, 2022 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-35499024

RESUMO

The effects of aquatic proteins on the proliferation and adhesion of intestinal probiotic bacteria were investigated by in vitro fermentation and mouse in vitrointestinal tissue models. Compared with the control group, the Illisha elongata protein reduced the growth time of Lactobacillus plantarum (LP45) by 34.25% and increased the total number of colonies by 6.61%. The Ilisha elongata salt-solubale protein performed better than water-soluble protein in vitro proliferation of LP45. Ilisha elongata salt-soluble protein significantly increased the number of viable bacteria adhering to intestinal, and caused changes in the amount of polysaccharides, proteins and biofilms in the intestinal tissue model. These results indicate that the Ilisha elongata protein is beneficial to the proliferation and adhesion of probiotics in the intestinal, and can be used as an active protein beneficial to intestinal health.

20.
Front Public Health ; 10: 1021646, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36353279

RESUMO

Background: High body mass index (BMI) is an important risk factor for stroke. The aim of this study was to assess the long-term trend of high BMI-attributed stroke mortality and make projections through 2030. Methods: Data were extracted from the Global Burden of Disease Study 2019 and World Population Prospects 2019. An age-period-cohort framework was used in the analysis. Results: From 1990 to 2019, the age-standardized mortality rate (ASMR) of high BMI-attributed stroke among females decreased by 15.2%, while among males, it increased by 31.1%. All of the age groups studied showed an increasing pattern over the last 30 years in males, and in female, the age groups encompassing participants who were 25-69 years old showed a decreasing pattern. In the same birth cohort, high BMI-attributable stroke mortality rates increased exponentially with age in both sexes. For females, the period rate ratios (RR) showed a downward trend after 2000-2004, and the cohort RR also showed a downward trend after the birth cohort 1930-1934. For males, the period RR showed an upward trend, but this increase was halted in the most recent period, and the cohort RRs showed a monotonic increasing pattern. It was projected that the ASMR of high BMI-attributed stroke would decrease among females and increase among males in the near future and that the proportion of elderly individuals with death due to high BMI-attributed stroke was projected to increase. Conclusions: Over the last three decades, the high BMI-attributed stroke mortality rate decreased among females and increased among males, and these trends are projected to continue in the future. In addition, the proportion of elderly individuals with high BMI-attributed stroke mortality was projected to increase gradually in both men and women. More health-promoting efforts are needed, especially for elderly individuals and males.


Assuntos
Acidente Vascular Cerebral , Masculino , Feminino , Humanos , Idoso , Adulto , Pessoa de Meia-Idade , Índice de Massa Corporal , Acidente Vascular Cerebral/epidemiologia , China/epidemiologia , Fatores de Risco , Previsões
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