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1.
Nature ; 608(7922): 397-404, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35922511

RESUMO

The human immune system is composed of a distributed network of cells circulating throughout the body, which must dynamically form physical associations and communicate using interactions between their cell-surface proteomes1. Despite their therapeutic potential2, our map of these surface interactions remains incomplete3,4. Here, using a high-throughput surface receptor screening method, we systematically mapped the direct protein interactions across a recombinant library that encompasses most of the surface proteins that are detectable on human leukocytes. We independently validated and determined the biophysical parameters of each novel interaction, resulting in a high-confidence and quantitative view of the receptor wiring that connects human immune cells. By integrating our interactome with expression data, we identified trends in the dynamics of immune interactions and constructed a reductionist mathematical model that predicts cellular connectivity from basic principles. We also developed an interactive multi-tissue single-cell atlas that infers immune interactions throughout the body, revealing potential functional contexts for new interactions and hubs in multicellular networks. Finally, we combined targeted protein stimulation of human leukocytes with multiplex high-content microscopy to link our receptor interactions to functional roles, in terms of both modulating immune responses and maintaining normal patterns of intercellular associations. Together, our work provides a systematic perspective on the intercellular wiring of the human immune system that extends from systems-level principles of immune cell connectivity down to mechanistic characterization of individual receptors, which could offer opportunities for therapeutic intervention.


Assuntos
Comunicação Celular , Sistema Imunitário , Mapas de Interação de Proteínas , Comunicação Celular/imunologia , Humanos , Sistema Imunitário/citologia , Sistema Imunitário/imunologia , Sistema Imunitário/metabolismo , Leucócitos/química , Leucócitos/imunologia , Leucócitos/metabolismo , Ligação Proteica , Proteoma/imunologia , Proteoma/metabolismo , Receptores de Superfície Celular/química , Receptores de Superfície Celular/imunologia , Receptores de Superfície Celular/metabolismo
2.
Nucleic Acids Res ; 52(12): 7063-7080, 2024 Jul 08.
Artigo em Inglês | MEDLINE | ID: mdl-38808662

RESUMO

Cohesin plays a crucial role in the organization of topologically-associated domains (TADs), which influence gene expression and DNA replication timing. Whether epigenetic regulators may affect TADs via cohesin to mediate DNA replication remains elusive. Here, we discover that the histone demethylase PHF2 associates with RAD21, a core subunit of cohesin, to regulate DNA replication in mouse neural stem cells (NSC). PHF2 loss impairs DNA replication due to the activation of dormant replication origins in NSC. Notably, the PHF2/RAD21 co-bound genomic regions are characterized by CTCF enrichment and epigenomic features that resemble efficient, active replication origins, and can act as boundaries to separate adjacent domains. Accordingly, PHF2 loss weakens TADs and chromatin loops at the co-bound loci due to reduced RAD21 occupancy. The observed topological and DNA replication defects in PHF2 KO NSC support a cohesin-dependent mechanism. Furthermore, we demonstrate that the PHF2/RAD21 complex exerts little effect on gene regulation, and that PHF2's histone-demethylase activity is dispensable for normal DNA replication and proliferation of NSC. We propose that PHF2 may serve as a topological accessory to cohesin for cohesin localization to TADs and chromatin loops, where cohesin represses dormant replication origins directly or indirectly, to sustain DNA replication in NSC.


Assuntos
Proteínas de Ciclo Celular , Proteínas Cromossômicas não Histona , Coesinas , Replicação do DNA , Proteínas de Ligação a DNA , Células-Tronco Neurais , Animais , Proteínas de Ciclo Celular/metabolismo , Proteínas de Ciclo Celular/genética , Proteínas Cromossômicas não Histona/metabolismo , Proteínas Cromossômicas não Histona/genética , Células-Tronco Neurais/metabolismo , Células-Tronco Neurais/citologia , Camundongos , Proteínas de Ligação a DNA/metabolismo , Proteínas de Ligação a DNA/genética , Cromatina/metabolismo , Origem de Replicação , Histona Desmetilases/metabolismo , Histona Desmetilases/genética , Proteínas Nucleares/metabolismo , Proteínas Nucleares/genética , Genoma/genética , Fator de Ligação a CCCTC/metabolismo , Fator de Ligação a CCCTC/genética , Camundongos Knockout
3.
Proc Natl Acad Sci U S A ; 116(30): 15042-15051, 2019 07 23.
Artigo em Inglês | MEDLINE | ID: mdl-31289231

RESUMO

Transcription of transposable elements is tightly regulated to prevent genome damage. KRAB domain-containing zinc finger proteins (KRAB-ZFPs) and KRAB-associated protein 1 (KAP1/TRIM28) play a key role in regulating retrotransposons. KRAB-ZFPs recognize specific retrotransposon sequences and recruit KAP1, inducing the assembly of an epigenetic silencing complex, with chromatin remodeling activities that repress transcription of the targeted retrotransposon and adjacent genes. Our biophysical and structural data show that the tripartite motif (TRIM) of KAP1 forms antiparallel dimers, which further assemble into tetramers and higher-order oligomers in a concentration-dependent manner. Structure-based mutations in the B-box 1 domain prevent higher-order oligomerization without significant loss of retrotransposon silencing activity, indicating that, in contrast to other TRIM-family proteins, self-assembly is not essential for KAP1 function. The crystal structure of the KAP1 TRIM dimer identifies the KRAB domain binding site in the coiled-coil domain near the dyad. Mutations at this site abolished KRAB binding and transcriptional silencing activity of KAP1. This work identifies the interaction interfaces in the KAP1 TRIM responsible for self-association and KRAB binding and establishes their role in retrotransposon silencing.


Assuntos
Epigênese Genética , Inativação Gênica , Proteínas Repressoras/química , Retroelementos , Proteína 28 com Motivo Tripartido/química , Sequência de Aminoácidos , Sítios de Ligação , Cromatina/química , Cromatina/metabolismo , Montagem e Desmontagem da Cromatina , Clonagem Molecular , Cristalografia por Raios X , Escherichia coli/genética , Escherichia coli/metabolismo , Expressão Gênica , Vetores Genéticos/química , Vetores Genéticos/metabolismo , Humanos , Modelos Moleculares , Ligação Proteica , Conformação Proteica em alfa-Hélice , Conformação Proteica em Folha beta , Domínios e Motivos de Interação entre Proteínas , Multimerização Proteica , Proteínas Recombinantes/química , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Proteínas Repressoras/genética , Proteínas Repressoras/metabolismo , Alinhamento de Sequência , Homologia de Sequência de Aminoácidos , Transcrição Gênica , Proteína 28 com Motivo Tripartido/genética , Proteína 28 com Motivo Tripartido/metabolismo
4.
Rheumatol Int ; 32(11): 3665-8, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21881993

RESUMO

There have been numerous studies linking complement components and the pathogenesis of systemic lupus erythematosus (SLE). This is due to their numerous roles in modulating immune responses in the human body. This study examined the association of C2 and C7 genetic polymorphisms with the susceptibility to SLE based on two separate cohorts of patient and control samples from Malaysia. The 28-bp deletion in the C2 exon-intron junction and single nucleotide polymorphism in the 3'untranslated region in the C7 genes were detected based on direct polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism, respectively. A total of 150 patient and 150 healthy control samples were screened, but there was no association detected between either genes. All individuals presented with null deletion in C2 genes, while the C allele and CC genotypes were most commonly scored. These overall results suggest a lack of strong association with the C2 and C7 gene polymorphisms to the susceptibility of SLE in the Malaysian population.


Assuntos
Complemento C2/genética , Complemento C7/genética , Predisposição Genética para Doença , Lúpus Eritematoso Sistêmico/genética , Adulto , Alelos , Povo Asiático/genética , Estudos de Associação Genética , Genótipo , Humanos , Malásia , Polimorfismo de Nucleotídeo Único
5.
Guang Pu Xue Yu Guang Pu Fen Xi ; 32(5): 1278-81, 2012 May.
Artigo em Zh | MEDLINE | ID: mdl-22827072

RESUMO

Stable PAMAM (polyamidoamine) capped ZnS (zinc sulfide) QDs (quantum dots) were prepared and characterized with UV-Vis spectrum and PL(photoluminescence) emission spectrum on the base of coordination of Zn2+ ions with PAMAM dendrimers. The results show that Zn2+ ions coordinated with N atoms of PAMAM ligand and the saturated coordinating time is about 6 h; PAMAM capped ZnS QDs emitted strong blue light under the irradiation of UV light at the wavelength of 365 nm, and the PL emission peak is at about 500 nm. Finally, the prepared PAMAM capped ZnS QDs were applied in the fluorescent labeling of latent fingerprints on tinfoils; Latent fingerprints emitting strong blue light and were successfully detected with good resolving rate.

6.
Schizophrenia (Heidelb) ; 8(1): 115, 2022 Dec 29.
Artigo em Inglês | MEDLINE | ID: mdl-36581615

RESUMO

Regulation of neuronal metabolism during early brain development is crucial for directing synaptic plasticity and proper circuit formation. Alterations in neuronal glycolysis or mitochondrial function are associated with several neuropsychiatric disorders, including schizophrenia. Recently, loss-of-function mutations in SETD1A, a histone methyltransferase, have been linked to increased schizophrenia risk and global developmental delay. Here, we show that heterozygous disruption of SETD1A in human induced pluripotent stem cell (hiPSC)-derived neurons results in reduced neurite outgrowth and spontaneous activity, two phenotypes commonly associated with schizophrenia, as well as alterations in metabolic capacity. Furthermore, supplementing culture media with metabolic intermediates ameliorated changes in neurite outgrowth and spontaneous activity, suggesting that metabolic dysfunction contributes to neuronal phenotypes caused by SETD1A haploinsufficiency. These findings highlight a previously unknown connection between SETD1A function, metabolic regulation, and neuron development, and identifies alternative avenues for therapeutic development.

7.
Mitochondrial DNA B Resour ; 7(1): 4-5, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34912952

RESUMO

In the present study, we announce the first complete chloroplast genome sequence of Artocarpus tonkinensis, a tree native to China with diverse beneficial uses. This complete chloroplast genome is 160,987 bp in length. In total, 130 genes were identified, including 85 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The findings of phylogenetic analysis supported that Artocarpus belongs to the Moraceae family and proposed a sister relationship between Artocarpus and Morus.

8.
FEBS J ; 288(10): 3072-3081, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33283457

RESUMO

Embarking on a PhD provides many opportunities for personal and professional development beyond scientific research. This instalment of the Words of Advice series aims to provide guidance and tips on harnessing these resources to build a well-rounded CV and increase your chances of getting hired after your PhD. We provide two perspectives on developing your CV to optimise career opportunities in academia and beyond. The first perspective is by Dr Zheng-Shan Chong, a post-doctoral researcher in Singapore, and focuses on the acquisition of a wide range of skills and experience that could open doors to a career outside of academia. Beyond her day job, Shan manages an article series on bioentrepreneurship and career development for Biotech Connection Singapore, which has allowed her to speak to several researchers who have successfully transitioned to non-research roles. Here, she summarises the insights gained from these conversations. This is followed by advice and tips from Dr Sara Clohisey, a post-doctoral researcher in Edinburgh who changed fields after her PhD, from Drosophila cell biology to human genetics and virology. Although not quite as dramatic as leaving academia completely, this shift prompted her to rethink her approach to writing an academic CV so that it would appeal to an employer from a different field. Sara's perspective is particularly geared towards careers in research. We hope that these unique perspectives from experienced individuals who have successfully navigated the path from graduate student to working scientist will prove useful to those who are planning their next moves after completing a PhD.


Assuntos
Escolha da Profissão , Candidatura a Emprego , Pesquisadores/organização & administração , Pesquisa Biomédica/organização & administração , Humanos , Pesquisadores/psicologia
9.
Trends Cell Biol ; 30(8): 619-627, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32595062

RESUMO

Neighbouring cells can recognise and communicate with each other by direct binding between cell surface receptor and ligand pairs. Examples of cellular recognition events include pathogen entry into a host cell, sperm-egg fusion, and self/nonself discrimination by the immune system. Despite growing appreciation of cell surface recognition molecules as potential therapeutic targets, identifying key factors contributing to cellular recognition remains technically challenging to perform on a genome-wide scale. Recently, genome-scale clustered regularly interspaced short palindromic repeats (CRISPR) knockout or activation (CRISPR-KO/CRISPRa) screens have been applied to identify the molecular determinants of cellular recognition. In this review, we discuss how CRISPR-KO/CRISPRa screening has contributed to our understanding of cellular recognition processes, and how it can be applied to investigate these important interactions in a range of biological contexts.


Assuntos
Proteína 9 Associada à CRISPR/metabolismo , Sistemas CRISPR-Cas/genética , Testes Genéticos , Animais , Membrana Celular/metabolismo , Humanos , Modelos Biológicos , Transdução de Sinais
10.
Orthop J Sports Med ; 8(4): 2325967120911126, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32313809

RESUMO

BACKGROUND: Intra-articular corticosteroid injections have been widely used and are considered a mainstay in the nonoperative treatment of symptomatic knee osteoarthritis (OA). However, their increased use can have negative implications, including chondral toxicity and a high risk of infections. As a result, nonsteroidal anti-inflammatory drugs have been considered as an alternative. PURPOSE: To determine the pain relief and safety of ketorolac versus a corticosteroid to supplement an intra-articular sodium hyaluronate injection for the treatment of symptomatic knee OA. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A total of 84 patients with unilateral symptomatic knee OA receiving 5 weekly injections were enrolled in this retrospective study. Group A (n = 42) received 3 weekly intra-articular corticosteroid injections (0.5% lidocaine, 25 mg of triamcinolone acetonide, and 25 mg of sodium hyaluronate, followed by 2 weekly injections of 0.5% lidocaine and 25 mg of sodium hyaluronate), while group B (n = 42) received 5 weekly ketorolac injections (0.5% lidocaine, 10 mg of ketorolac, and 25 mg of sodium hyaluronate). The following parameters were used to evaluate pain relief and safety: visual analog scale (VAS) for pain, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and side effects before the injection and at 1, 2, and 5 weeks after treatment commencement as well as 3 months after the last injection. RESULTS: Patients from both groups had a significant improvement in VAS and WOMAC scores from the first injection to final follow-up at 3 months. In the first week, the VAS score was lower in group A (P = .041), but no significant between-group differences were found for either the VAS or the WOMAC score at the other time points. Of the 42 patients in group A, 34 (81.0%) and 25 (59.5%) achieved successful outcomes at 5 weeks after treatment commencement and 3 months after the last injection, respectively. In group B, 32 (76.2%) and 24 (57.1%) patients achieved successful outcomes at 5 weeks after treatment commencement and 3 months after the last injection, respectively. At final follow-up, no significant difference was found in the successful treatment rate between the groups (P = .825). CONCLUSION: The current study demonstrated that intra-articular ketorolac and corticosteroid injections produce the same pain relief and functional improvement.

11.
J Psychosom Res ; 126: 109834, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31525637

RESUMO

OBJECTIVE: The aim of this meta-analysis was to examine the efficacy of cognitive behavioral therapy (CBT) for hemodialysis patients with comorbid depression and to identify which other aspects, including anxiety and quality of life, can be improved through intervention. METHODS: A systematic literature review was performed using multiple databases (PubMed, EMBase, PsycINFO, CENTRAL). The inclusion criteria included randomized controlled trials (RCTs) of CBT conducted in hemodialysis patients with depression. Study reporting quality was assessed with the Cochrane tool and Review Manager version 5.3 was used to obtain pooled results. RESULTS: Eight RCTs, with a total sample size of 540 participants, met the inclusion criteria. Compared with control groups, the CBT groups had statistically significant improvements in depression (standardized mean differences [SMD] = -0.68, 95% confidence interval [CI] (-0.94 to -0.42), P < .001), anxiety (SMD = -0.99, 95%CI (-1.99 to 0.00), P = .05) and quality of life (SMD = 0.34, 95%CI (0.13 to 0.54), P < .001). CONCLUSIONS: The results of this meta-analysis showed that CBT could have an effective role in reducing symptoms of depression and anxiety as well as improving quality of life in hemodialysis patients with comorbid depression.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Depressão/terapia , Qualidade de Vida/psicologia , Ensaios Clínicos Controlados Aleatórios como Assunto/métodos , Diálise Renal/métodos , Humanos
12.
Genome Biol ; 19(1): 205, 2018 11 26.
Artigo em Inglês | MEDLINE | ID: mdl-30477585

RESUMO

Extracellular interactions between cell surface receptors are necessary for signaling and adhesion but identifying them remains technically challenging. We describe a cell-based genome-wide approach employing CRISPR activation to identify receptors for a defined ligand. We show receptors for high-affinity antibodies and low-affinity ligands can be unambiguously identified when used in pools or as individual binding probes. We apply this technique to identify ligands for the adhesion G-protein-coupled receptors and show that the Nogo myelin-associated inhibitory proteins are ligands for ADGRB1. This method will enable extracellular receptor-ligand identification on a genome-wide scale.


Assuntos
Genômica/métodos , Receptores de Superfície Celular/análise , Sistemas CRISPR-Cas , Humanos , Ligantes
13.
Artigo em Zh | WPRIM | ID: wpr-993627

RESUMO

Objective:To evaluate the value of integrated PET/MR in assessing myocardial viability in ischemic heart disease.Methods:A total of 39 patients (28 males, 11 females; age (60.1±12.0) years) diagnosed with ischemic heart disease in Xuanwu Hospital, Capital Medical University were retrospectively enrolled from September 2020 to December 2021. All patients underwent cardiac 13N-NH 3·H 2O and 18F-FDG PET/MR examinations. Late gadolinium enhancement (LGE) sequence was included in MRI scan. PET and MRI images were analyzed and myocardial viability of each myocardial segment was evaluated according to the American Heart Association (AHA) 17 segment method. The extent of left ventricular infarcted myocardium was measured based on PET and MRI images. Weighted Kappa test was used to evaluate the agreement of PET and MRI in assessing myocardial viability. The extent of infarcted myocardium measured by PET and MRI was compared by paired- t test, and Pearson correlation analysis was used to assess the correlation between them. Results:There was a moderate agreement between PET and MRI in assessing myocardial viability ( Kappa=0.532, P<0.001), with the agreement rate of 69.83%(463/663). There was no significant difference but strong correlation between the extents of infarcted myocardium measured by PET and MRI ((23.89±14.23)% vs (23.55±11.90)%; t=-0.24, P=0.809; r=0.79, P<0.001). In segments with normal perfusion and metabolism on PET, 22.52% (100/444) showed abnormal enhancement on MRI. On the other hand, 39.89% (73/183) of the segments classified as non-viable on MRI showed normal or viable on PET. Conclusion:Integrated PET/MR is able to take full advantage of the complementary nature of PET and MRI, achieving the comprehensive and accurate evaluation of myocardial viability.

15.
Cell Rep ; 15(12): 2597-607, 2016 06 21.
Artigo em Inglês | MEDLINE | ID: mdl-27292646

RESUMO

Incomplete knowledge of the mechanisms at work continues to hamper efforts to maximize reprogramming efficiency. Here, we present a systematic genome-wide RNAi screen to determine the global regulators during the early stages of human reprogramming. Our screen identifies functional repressors and effectors that act to impede or promote the reprogramming process. Repressors and effectors form close interacting networks in pathways, including RNA processing, G protein signaling, protein ubiquitination, and chromatin modification. Combinatorial knockdown of five repressors (SMAD3, ZMYM2, SFRS11, SAE1, and ESET) synergistically resulted in ∼85% TRA-1-60-positive cells. Removal of the novel splicing factor SFRS11 during reprogramming is accompanied by rapid acquisition of pluripotency-specific spliced forms. Mechanistically, SFRS11 regulates exon skipping and mutually exclusive splicing of transcripts in genes involved in cell differentiation, mRNA splicing, and chromatin modification. Our study provides insights into the reprogramming process, which comprises comprehensive and multi-layered transcriptional, splicing, and epigenetic machineries.


Assuntos
Reprogramação Celular/genética , Interferência de RNA , Células Cultivadas , Técnicas de Silenciamento de Genes , Testes Genéticos , Genoma Humano , Humanos , Cinética , Proteínas Associadas aos Microtúbulos/genética , Proteínas Associadas aos Microtúbulos/metabolismo , Splicing de RNA/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , RNA Interferente Pequeno/metabolismo , Proteínas Repressoras/metabolismo , Fatores de Processamento de Serina-Arginina/metabolismo
16.
Artigo em Zh | WPRIM | ID: wpr-856351

RESUMO

Objective: To investigate the effect of body mass index (BMI) on the short- and medium-term effectiveness of unicompartmental knee arthroplasty (UKA) in the treatment of anterior medial compartmental osteoarthritis of knee joint. Methods: The clinical data of 55 patients (61 knees) with anterior medial compartmental osteoarthritis of knee joint treated with minimally invasive UKA between May 2014 and May 2019 were retrospectively analyzed. According to BMI, the patients were divided into 3 groups: normal body mass group [group A, BMI 18.50-24.99 kg/m 2, 23 cases (25 knees)], overweight group [group B, BMI 25.00-29.99 kg/m 2, 23 cases (25 knees)], obesity group [group C, BMI 30.00-39.99 kg/m 2, 9 cases (11 knees)]. There was no significant difference in gender, age, sides, disease duration, and preoperative American Special Surgery Hospital (HSS) score, pain visual analogue scale (VAS) score, and knee range of motion (ROM) among 3 groups ( P>0.05). The operation time, intraoperative dominant blood loss, and the postoperative decreased amount of hemoglobin at 1 week were recorded and compared among 3 groups. The HSS score, VAS score, and ROM were used to evaluate the knee function and pain improvement. Results: There was no significant difference in the operation time, the intraoperative dominant blood loss, and the postoperative decreased amount of hemoglobin at 1 week among 3 groups ( P>0.05). All the 55 patients were followed up 5-60 months, with an average of 24 months. No complication such as infection, fat embolism, or deep venous thrombosis of lower extremity occurred after operation. The anteroposterior and lateral X-ray films of the knee joint showed that no dislocation or loosening of the prosthesis occurred and the position of the prosthesis was good. At last follow-up, the HSS score, VAS score, and ROM of the 3 groups were significantly improved when compared with preoperative ones ( P0.05). Conclusion: For obese and overweight patients with anterior medial compartmental osteoarthritis of the knee joint, the use of minimally invasive UKA can achieve satisfactory short- and medium-term effectiveness, and the long-term effectiveness needs further follow-up.

17.
Artigo em Zh | WPRIM | ID: wpr-824966

RESUMO

Objective: To observe the effects of laurocapram and borneol as transdermal penetration enhancers applied to herbal cake-partitioned moxibustion on liver lipids, hormone-sensitive lipase (HSL) and hydroxymethylglutaryl CoA (HMG-CoA) reductase in hyperlipidemia rabbits.Methods: Forty New-Zealand rabbits were randomly divided into 5 groups using the random number table method, with 8 rats in each group. Rabbits in the blank group were fed routinely with a normal diet; rabbits in the other groups were fed with high-fat diet for 12 weeks to establish the hyperlipidemia model. Rabbits in the blank and the model groups were not given any intervention. After the model was prepared successfully, rabbits in the non-transdermal penetration enhancer group received herbal cake-partitioned moxibustion without transdermal penetration enhancers; rabbits in the laurocapram group and the borneol group received herbal cake-partitioned moxibustion with laurocapram or borneol respectively. After 4 weeks of treatment, the serum was isolated and enzyme-linked immunosorbent assay (ELISA) was applied for the detection of HSL and HMG-CoA reductase. The liver tissues were isolated, and total cholesterol (TC) and triglycerides (TG) were measured by enzymatic methods. One-step method was applied for high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) detection, and transmission turbidimetry was for apolipoprotein A1 (Apo-A1) and apolipoprotein B (Apo-B) detection. Results: The serum concentrations of the drugs in the laurocapram and the borneol groups were significantly higher than those in the non-transdermal penetration enhancer group (both P<0.05); all drug penetrations in the borneol group were significantly higher than those in the laurocapram group (both P<0.05), except for tanshinone ⅡA. Compared with the non-transdermal penetration enhancer group, the HSL was significantly increased while the HMG-CoA reductase was significantly decreased in the laurocapram and the borneol groups (both P<0.05); between groups, the HSL in the borneol group was significantly higher than that in the laurocapram group (P<0.05). Compared with the blank group, the levels of LDL-C, TG, TC and Apo-B in rabbit liver were significantly increased in the model group (P<0.05); compared with the model group, the levels of LDL-C, TG, TC and Apo-B in the non-transdermal penetration enhancer, the laurocapram, and the borneol groups were significantly decreased (all P<0.05); between groups, the TG and TC in the laurocapram group and the LDL-C, TG, TC and Apo-B in the borneol group were significantly lower than those in the non-transdermal penetration enhancer group (all P<0.05), and the TG, LDL-C and Apo-B in the borneol group were significantly lower than those in the laurocapram group (all P<0.05). Compared with the blank group, the HDL-C and Apo-A1 were significantly decreased in the model group (both P<0.05), while compared with the model group, the HDL-C and Apo-A1 were significantly increased in the non-transdermal penetration enhancer, the laurocapram, and the borneol groups (all P<0.05). Between groups, the Apo-A1 in the laurocapram group, the HDL-C and Apo-A1 in the borneol group were significantly higher than those in the non-transdermal penetration enhancer group (all P<0.05).Conclusion: The application of laurocapram and borneol, as transdermal penetration enhancers, in herbal cake-partitioned moxibustion can promote the penetration of the drugs in the herbal cake, increase the levels of HDL-C and Apo-A1, improve the metabolism of HSL and HMG-CoA reductase, and also simultaneously reduce the levels of TC, TG, LDL-C and Apo-B in the liver. The transdermal penetration enhancement effect of borneol is slightly better than or equivalent to that of laurocapram.

18.
World J Gastroenterol ; 9(5): 1063-6, 2003 May.
Artigo em Inglês | MEDLINE | ID: mdl-12717857

RESUMO

AIM: To observe dynamic of different chemical elements in stomach tissue during fetal development. METHODS: To determine contents of the 21 chemical elements in each stomach samples from fetus aging four to ten months. The content values were compared to those from adult tissue samples, and the values for each month group were also analyzed for dynamic changes. RESULTS: Three representations were found regarding the relationship between contents of the elements and ages of the fetus, including the positive correlative (K), reversely correlative (Na, Ca, P, Al, Cu, Zn, Fe, Mn, Cr, Sr, Li, Cd, Ba, Se ) and irrelevant groups (Mg, Co, Ni, V, Pb, Ti). CONCLUSION: The chemical elements' contents in stomach tissues were found to change dynamically with the stomach weights. The age-dependent representations for different chemical elements during the prenatal development may be of some significance for assessing development of fetal stomach and some chemical elements. The data may be helpful for the nutritional balance of fetus and mothers during prenatal development and even the perinatal stages.


Assuntos
Desenvolvimento Embrionário e Fetal/fisiologia , Estômago/química , Estômago/embriologia , Adulto , China , Elementos Químicos , Feminino , Idade Gestacional , Humanos , Metais/análise , Gravidez
19.
Zhongguo Zhen Jiu ; 34(10): 967-71, 2014 Oct.
Artigo em Zh | MEDLINE | ID: mdl-25543425

RESUMO

OBJECTIVE: To explore the efficacy and feasibility of dog days moxibustion plaster therapy in treatment of allergic rhinitis of different patterns/syndromes. METHODS: Allergic rhinitis of lung deficiency and invasion of cold, spleen qi deficiency and kidney yang deficiency, 56 patients for each pattern/syndrome were randomized into a plaster therapy group and a nasal spray group, 28 cases in each one. In the plaster therapy group, according to the pattern/syndrome differentiation, with literature retrieval method, 3 acupoints of high frequency utility in clinic were selected as one group in acupoint plaster therapy. For lung deficiency and invasion of cold pattern/syndrome, Feishu (BL 13), Fengmen (BL 12) and Hegu (LI 4) were selected. For spleen qi deficiency pattern/syndrome, Pishu (BL 21), Zusanli (ST 36) and Dazhui (GV 14) were selected. For kidney yang deficiency pattern/ syndrome, Shenshu (BL 23), Dingchuan (EX-B 1) and Bailao (EX-HN 15) were selected. Separately, on July 13, 2013, July 23, 2013, August 2, 2013 and August 12, 2013, the aucpoint plaster therapy was applied, 2 to 4 h (1 to 2 h for children) each time. In the nasal spray group, beclometasone dipropionate aqueous nasal spray, 2 presses one nostril each time, 2 to 3 times a day, continuously for 4 weeks. The symptom score and efficacy were compared before and after treatment in the patients of the two groups. RESULTS: The symptom scores of 3 patterns/syndromes were all apparently improved after treatment as compared with those before treatment in the patients of the two groups (all P<0.05), and the result in the plaster therapy group was better than that of the nasal spray group (P<0.05, P<0.01). For lung deficiency and invasion of cold pattern/syndrome, the total effective rate was 87.3% (20/24) in the plaster therapy group, better than 84.6% (22/26) in the nasal spray group (P<0.05). For spleen qi deficiency pattern/syndrome, the total effective rate was 83.3% (20/24) in the plaster therapy group, obviously better than 76.9% (22/26) in the nasal spray group (P<0.05). For kidney yang deficiency pattern/syndrome, the total effective rate was 79.2% (19/24) in the plaster therapy group, better than 76.9% (22/26) in the nasal spray group (P<0.05). CONCLUSION: The dog days moxibustion plaster therapy achieves definite efficacy on allergic rhinitis at the acupoints selected based on the differentiation of different patterns/syndromes and the efficacy is better than beclometasone dipropionate aqueous nasal spray.


Assuntos
Medicamentos de Ervas Chinesas/administração & dosagem , Rinite Alérgica/tratamento farmacológico , Rinite Alérgica/terapia , Pontos de Acupuntura , Administração Cutânea , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Animais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Deficiência da Energia Yang/tratamento farmacológico , Adulto Jovem
20.
Artigo em Zh | WPRIM | ID: wpr-824932

RESUMO

Objective:To observe the lipid-lowering effect of different transdermal absorption enhancers applied to the herbal cake-partitioned moxibustion in hyperlipidemia model rabbits, and to explore the possible mechanism. Methods:Forty New-Zealand rabbits were randomly divided into 5 groups using the random number table method, with 8 rats in each group. Rabbits in the blank group were fed routinely with normal diet; rabbits in the other groups were fed with high-fat diet for 12 weeks to establish the hyperlipidemia model. Rabbits in the blank and the model groups were not treated. After the model was prepared, rabbits in the non-transdermal absorption enhancer group received herbal cake-partitioned moxibustion without transdermal absorption enhancer; rabbits in the laurocapram group and the borneol group received herbal cake-partitioned moxibustion with laurocapram or borneol respectively. After 4 weeks of treatment, serum was collected for enzyme-linked immunosorbent assay (ELISA), and the liver tissues were isolated for immunohistochemistry, quantitative polymerase chain reaction (qPCR) and Western-blotting (WB) detection. Results: Serum ELISA results showed that leptin was significantly decreased in the model group compared with the blank group (P<0.05); compared with the model group, leptin was significantly increased in the non-transdermal absorption enhancer, the laurocapram and the borneol groups (all P<0.05); compared with the non-transdermal absorption enhancer group, leptin was significantly increased in the laurocapram group and the borneol group (both P<0.05); there was no significant difference in leptin between the laurocapram and the borneol groups (P>0.05). The qPCR results of rabbit liver tissues showed that the mRNA expressions of leptin, Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3) in the model group were significantly lower than those in the blank group (all P<0.05); compared with the model group, the mRNA expressions of leptin, leptin receptor (LR), JAK2 and STAT3 in the non-transdermal absorption enhancer, the laurocapram and the borneol groups were significantly increased (all P<0.05); compared with the non-transdermal absorption enhancer group, the mRNA expressions of leptin, LR, JAK2 and STAT3 in the laurocapram and the borneol groups were significantly increased (all P<0.05); compared with the laurocapram group, the mRNA expressions of leptin, LR, JAK2 and STAT3 in the borneol group were significantly increased (P<0.05). The trend of immunohistochemistry and WB detection results was basically consistent with the qPCR assay results. The immunohistochemistry and WB detection results of phosphorylated JAK2 (phospho-JAK2) and phosphorylated STAT3 (phospho-STAT3) were basically consistent with those of JAK2 and STAT3. Conclusion: The molecular expression of Leptin/JAK2/STAT3 pathway in the hyperlipidemia model rabbits was decreased. The molecular expression of Leptin/JAK2/STAT3 pathway was significantly increased after the herbal cake-partitioned moxibustion. The application of laurocapram and borneol, as transdermal absorption enhancers, in the herbal cake-partitioned moxibustion could more obviously up-regulate the factors of the Leptin/JAK2/STAT3 lipid-regulating pathway than the herbal cake-partitioned moxibustion alone.

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