Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 17 de 17
Filtrar
1.
Int J Neurosci ; : 1-8, 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38618966

RESUMO

OBJECTIVE: To investigate the impact of the combination of CICARE (C - Connect, I - Introduce, C - Communicate, A - Ask, R - Respond, E - Exit) communication model and traditional Chinese medicine (TCM) poultice on muscle strength and depression levels in patients. METHODS: Patients were divided into three groups: basic treatment group, basic treatment + TCM poultice group, and combined treatment group. Conventional rehabilitation therapy, TCM poultice external application, and the combination of both with the CICARE communication model were applied in the respective groups. Muscle strength (AMA muscle strength grading scale), self-care abilities (Barthel Index), depression symptoms (Hamilton Depression Rating Scale), neurological deficit status (NIHSS score) and serum inflammatory factor levels were assessed at admission, 3 weeks, and 8 weeks of treatment. RESULTS: After 3 and 8 weeks of treatment, the combined treatment group had higher AMA muscle strength scores and improved Barthel Index scores compared to other groups (p < 0.05). Depressive symptoms also improved significantly in the combined treatment group, with lower HDRS scores at 3 and 8 weeks (p < 0.05). After 8 weeks, IL-1, IL-6, and hs-CRP levels decreased in all groups, with the combined treatment group showing the lowest levels (p < 0.05). NIHSS scores decreased significantly in all groups post-intervention, with the combined treatment group showing the greatest improvement (p < 0.05). CONCLUSION: The integration of CICARE communication model with TCM poultice shows notable benefits in enhancing muscle strength, daily living self-care abilities, reducing depression, neurological impairment, and inflammatory factors in post-stroke hemiplegia patients.

2.
Microb Pathog ; 142: 104043, 2020 Feb 04.
Artigo em Inglês | MEDLINE | ID: mdl-32032768

RESUMO

Cherax quadricarinatus is seriously affected by multiple types of pathogens, including bacteria and viruses, and has been widely transplanted around the world. Heat shock proteins (Hsps) are a group of molecular chaperones that play important roles in promoting the proper refolding and blocking the aggregation of denatured proteins. In this study, CqHsp60, CqHsp70 and CqHsp90 from C. quadricarinatus were cloned, and their expression patterns were analysed. The CDS (coding sequence) lengths of the CqHsp60, CqHsp70 and CqHsp90 genes were 1731 bp, 1932 bp and 2199 bp, encoding 576, 643 and 732 amino acids, respectively. CqHsp60 was 99.13%, 98.78% and 88.63% identical to the corresponding sequences of Cherax cainii, Cherax destructor and Eriocheir sinensis, respectively. CqHsp70 showed 99.84%, 92.73% and 91.58% identity to the corresponding sequences of C. cainii, C. destructor and E. sinensis, while CqHsp90 was 98.25%, 98.51% and 91.41% identical with those of C. cainii, C. destructor and E. sinensis, respectively. The expression patterns of the three CqHsps were different between males and females. CqHsp60 and CqHsp70 exhibited the highest expression in the hepatopancreas of males and the gonads of females, and CqHsp90 presented the highest expression in the gonads of males and hepatopancreas of females. After pathogenic inoculation, the death trend of C. quadricarinatus at different time points was the same in association with different pathogens, with most deaths occurring within 6 h post-inoculation. The trend of CqHsp transcription at different time points was the same among the groups treated with Vibrio alginolyticus, Vibrio parahemolyticus and Aeromonas hydrophila, exhibiting upregulation first and then downregulation. The expression of CqHsp60 and CqHsp70 in the gills of living C. quadricarinatus was less than 3.5 times that in the PBS group, but in the gills of dead C. quadricarinatus under A. hydrophila inoculation, its expression was more than 5-9 times that in the PBS group. CqHsp90 expression changed dramatically in the V. alginolyticus, V. parahemolyticus and A. hydrophila groups, in which it exceeded 50 times the level in the PBS group. These results indicated that CqHsps could induce the activation of the immune system within a short time and that CqHsp90 could be used as a more effective molecular biomarker than CqHsp70 and CqHsp60 in a pathogenic bacterium-polluted environment.

3.
Front Microbiol ; 15: 1342804, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38881655

RESUMO

Introduction: The buffalo is an important domestic animal globally, providing milk, meat, and labor to more than 2 billion people in 67 countries. The rumen microorganisms of buffaloes play an indispensable role in enabling the healthy functionality and digestive function of buffalo organisms. Currently, there is a lack of clarity regarding the differences in the composition and function of rumen microorganisms among buffaloes at different growth stages. Methods: In this study, metagenomics sequencing technology was applied to examine the compositional and functional differences of rumen microorganisms in adult and breastfed buffaloes. Results: The results revealed that the rumen of adult buffaloes had significantly higher levels of the following dominant genera: Prevotella, UBA1711, RF16, Saccharofermentans, F23-D06, UBA1777, RUG472, and Methanobrevibacter_A. Interestingly, the dominant genera specific to the rumen of adult buffaloes showed a significant positive correlation (correlation>0.5, p-value<0.05) with both lignocellulose degradation-related carbohydrate-active enzymes (CAZymes) and immune signaling pathways activated by antigenic stimulation. The rumen of breastfed buffaloes had significantly higher levels of the following dominant genera: UBA629, CAG- 791, Selenomonas_C, Treponema_D, Succinivibrio, and RC9. Simultaneously, the rumen-dominant genera specific to breastfed buffaloes were significantly positively correlated (correlation>0.5, p-value<0.05) with CAZymes associated with lactose degradation, amino acid synthesis pathways, and antibiotic-producing pathways. Discussion: This indicates that rumen microorganisms in adult buffaloes are more engaged in lignocellulose degradation, whereas rumen microorganisms in breastfed buffaloes are more involved in lactose and amino acid degradation, as well as antibiotic production. In conclusion, these findings suggest a close relationship between differences in rumen microbes and the survival needs of buffaloes at different growth stages.

4.
Synth Syst Biotechnol ; 9(1): 115-126, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38292761

RESUMO

Dopamine can be used to treat depression, myocardial infarction, and other diseases. However, few reports are available on the de novo microbial synthesis of dopamine from low-cost substrate. In this study, integrated omics technology was used to explore the dopamine metabolism of a novel marine multi-stress-tolerant aromatic yeast Meyerozyma guilliermondii GXDK6. GXDK6 was found to have the ability to biosynthesize dopamine when using glucose as the substrate. 14 key genes for the biosynthesis of dopamine were identified by whole genome-wide analysis. Transcriptomic and proteomic data showed that the expression levels of gene AAT2 encoding aspartate aminotransferase (regulating dopamine anabolism) were upregulated, while gene AO-I encoding copper amine oxidase (involved in dopamine catabolism) were downregulated under 10 % NaCl stress compared with non-NaCl stress, thereby contributing to biosynthesis of dopamine. Further, the amount of dopamine under 10 % NaCl stress was 2.51-fold higher than that of zero NaCl, which was consistent with the multi-omics results. Real-time fluorescence quantitative PCR (RT-qPCR) and high-performance liquid chromatography (HPLC) results confirmed the metabolic model of dopamine. Furthermore, by overexpressing AAT2, AST enzyme activity was increased by 24.89 %, the expression of genes related to dopamine metabolism was enhanced, and dopamine production was increased by 56.36 % in recombinant GXDK6AAT2. In conclusion, Meyerozyma guilliermondii GXDK6 could utilize low-cost carbon source to synthesize dopamine, and NaCl stress promoted the biosynthesis of dopamine.

5.
Biomed Res Int ; 2022: 6240711, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36147637

RESUMO

Staphylococcus aureus is emerging as a ubiquitous multidrug-resistant pathogen circulating among animals, humans, and their environment. The current study focused on molecular epidemiology and evidence-based treatment against S. aureus from bovine endometritis. For this study, n = 304 cattle were screened for endometritis using ultrasonography while presenting case history, and clinical signs were also considered. S. aureus was isolated from endometritis-positive uterine samples which were further put to molecular identification, phylogenetic analysis, susceptibility to antibiotics, and testing of novel drug combinations in both in vitro and field trials. The findings of the study revealed 78.20% of bovine endometritis samples positive for S. aureus, while nuc gene-based genotyping of S. aureus thermal nuclease (SA-1, SA-2, and SA-3) showed close relatedness with S. aureus thermal nuclease of Bos taurus. Drug combinations showed 5.00 to 188.88% rise in zones of inhibitions (ZOI) for drugs used in combination compared to the drugs used alone. Gentamicin in combination with amoxicillin and enrofloxacin with metronidazol showed synergistic interactions in an in vitro trial. Co-amoxiclav with gentamicin, gentamicin with enrofloxacin, and metronidazole with enrofloxacin showed 100%, 80%, and 60% efficacy in treating clinical cases in field trials, respectively. As a result, the study came to the conclusion the higher prevalence of endometritis-based S. aureus, genetic host shifts, narrow options for single drugs, and need for novel drug combinations to treat clinical cases.


Assuntos
Endometrite , Staphylococcus aureus Resistente à Meticilina , Infecções Estafilocócicas , Amoxicilina/uso terapêutico , Combinação Amoxicilina e Clavulanato de Potássio/uso terapêutico , Animais , Antibacterianos/farmacologia , Antibacterianos/uso terapêutico , Bovinos , Endometrite/tratamento farmacológico , Enrofloxacina/uso terapêutico , Feminino , Genômica , Gentamicinas/uso terapêutico , Metronidazol , Testes de Sensibilidade Microbiana , Filogenia , Infecções Estafilocócicas/tratamento farmacológico , Infecções Estafilocócicas/genética , Infecções Estafilocócicas/veterinária , Staphylococcus aureus
6.
Front Genet ; 12: 671235, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34512716

RESUMO

Toll-like receptors (TLRs) are pathogen recognition receptors, and primitive sources of innate immune response that also play key roles in the defense mechanism against infectious diseases. About 10 different TLRs have been discovered in chicken that recognize ligands and participate in TLR signaling pathways. Research findings related to TLRs revealed new approaches to understand the fundamental mechanisms of the immune system, patterns of resistance against diseases, and the role of TLR-specific pathways in nutrient metabolism in chicken. In particular, the uses of specific feed ingredients encourage molecular biologists to exploit the relationship between nutrients (including different phytochemicals) and TLRs to modulate immunity in chicken. Phytonutrients and prebiotics are noteworthy dietary components to promote immunity and the production of disease-resistant chicken. Supplementations of yeast-derived products have also been extensively studied to enhance innate immunity during the last decade. Such interventions pave the way to explore nutrigenomic approaches for healthy and profitable chicken production. Additionally, single-nucleotide polymorphisms in TLRs have shown potential association with few disease outbreaks in chickens. This review aimed to provide insights into the key roles of TLRs in the immune response and discuss the potential applications of these TLRs for genomic and nutritional interventions to improve health, and resistance against different fatal diseases in chicken.

7.
Antibiotics (Basel) ; 10(8)2021 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-34439047

RESUMO

Antibiotic-resistant bacteria have become the predominant etiology of endometritis and thus require effective treatment approaches. We used ultrasonography coupled with clinical signs and presented complaints of reproductive issues to investigate the epidemiology, phylogenetic analysis, antimicrobial resistance, and development of novel therapeutics against Escherichia coli isolated from endometritis in bovine (n = 304 from 10 commercial dairy farms). The prevalence of bovine endometritis in this study was 43.75%, while among these, 72.18% samples were positive for E. coli. Nucleotide analysis performed through BLAST and MEGAX showed 98% similarity to the nucleotide sequence of the reference E. coli strain (accession number CP067311.1). The disk diffusion assay revealed pathogen resistance to most antibiotics. Pattern of MIC order of resistance was as follows: enrofloxacin < gentamicin < co-amoxiclav < streptomycin < amoxicillin < metronidazole < oxytetracycline. Field trials revealed the highest recovery rate (in terms of clearance of endometritis and establishment of pregnancy) in case of gentamicin + enrofloxacin (100%) and gentamicin alone (100%), followed by co-amoxiclav + gentamicin (84.61%), oxytetracycline alone (78.57%), and metronidazole + enrofloxacin (33.33%). Hence, the current study reported a higher prevalence of multidrug-resistant E. coli showing considerable similarity with reference strain, and finally, the effective response of novel antibiotics to treat cases.

8.
J Affect Disord ; 281: 786-791, 2021 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-33229023

RESUMO

BACKGROUND: Adolescents with bipolar disorder (BD) are often misdiagnosed with major depressive disorder (MDD), which delays the introduction of appropriate treatment resulting in adverse outcomes. This study examined the psychometric properties of the 33-item Hypomania Checklist (HCL-33) and its accuracy to distinguish BD from MDD in adolescents. METHOD: A total of 248 participants (171 MDD and 77 BD patients) were recruited from a university-affiliated hospital in China. Depression was measured with the Hamilton Depression Rating Scale. All participants completed the assessment with the HCL-33. RESULTS: A two-factor structure was found for the HCL-33, which explained 30.2% of the total variance. The internal consistency and split half reliability of the total scale were acceptable. The optimal cut-off value of 18 generated sensitivity of 0.52 and specificity of 0.73 for distinguishing BD from MDD. CONCLUSION: The HCL-33 seems to be a useful screening instrument to distinguish BD from depressed adolescents. However, considering certain less than robust psychometric properties, the HCL-33 needs to be modified and further refined for adolescent patients.


Assuntos
Transtorno Bipolar , Transtorno Depressivo Maior , Adolescente , Transtorno Bipolar/diagnóstico , Lista de Checagem , China , Transtorno Depressivo Maior/diagnóstico , Humanos , Mania , Psicometria , Reprodutibilidade dos Testes
9.
J Huazhong Univ Sci Technolog Med Sci ; 30(5): 562-8, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21063835

RESUMO

This study examined the effect of self-microemulsiflying drug delivery system (SMEDDS) containing Cremophor RH40 or Tween 80 at various dilutions on cytochrome P450 3A (CYP3A) enzymes in rat hepatocytes, with midazolam serving as a CYP3A substrate. The particle size and zeta potential of microemulsions were evaluated upon dilution with aqueous medium. In vitro release was detected by a dialysis method in reverse. The effects of SMEDDS at different dilutions and surfactants at different concentrations on the metabolism of MDZ were investigated in murine hepatocytes. The cytotoxicity of SMEDDS at different dilutions was measured by LDH release and MTT technique. The effects of SMEDDS on the CYP3A enzymes activity were determined by Western blotting. Our results showed that dilution had less effect on the particle size and zeta potential in the range from 1:25 to 1:500. The MDZ was completely released in 10 h. A significant decrease in the formation of 1'-OH-MDZ in rat hepatocytes was observed after treatment with both SMEDDS at dilutions ranging from 1:50 to 1:250 and Cremophor RH 40 or Tween 80 at concentrations ranging from 0.1% to 1% (w/v), with no cytotoxicity observed. A significant decrease in CYP3A protein expression was observed in cells by Western blotting in the presence of either Cremophor RH40 or Tween 80-based SMEDDS at the dilutions ranging from 1:50 to 1:250. This study suggested that the excipient inhibitor-based formulation is a potential protective platform for decreasing metabolism of sensitive drugs that are CYP3A substrates.


Assuntos
Inibidores do Citocromo P-450 CYP3A , Sistemas de Liberação de Medicamentos , Hepatócitos/enzimologia , Polietilenoglicóis/farmacologia , Polissorbatos/farmacologia , Administração Oral , Animais , Disponibilidade Biológica , Citocromo P-450 CYP3A/efeitos dos fármacos , Emulsões/química , Hepatócitos/metabolismo , Masculino , Midazolam/administração & dosagem , Midazolam/metabolismo , Midazolam/farmacocinética , Veículos Farmacêuticos , Ratos , Ratos Sprague-Dawley , Tensoativos/química
10.
Zhen Ci Yan Jiu ; 44(4): 235-41, 2019 Apr 25.
Artigo em Zh | MEDLINE | ID: mdl-31056874

RESUMO

OBJECTIVE: To observe the effect of moxibustion of acupoints of the Governor Vessel on the levels of cellular autophagy, ß amyloid protein (Aß) immunoactivity, and expression of LC3-Ⅰ, LC3-Ⅱ, p62 and p-P70S6K proteins in the hippocampal tissue of APPswe/PS1de9 (APP/PS1) double-transgenic Alzheimer's disease (AD) mice, so as to reveal its underlying mechanisms in improving AD. METHODS: APP/PS1 double-transgenic AD mice were randomly divided into AD model, moxibustion, autophagy-inducer (Rapamycin) and autophagy-inhibitor (3-MA)+moxibustion groups (n=10 in each group), and other 10 C57BL/6J male mice (the same age) were used as the normal control group. Herbal-cake (made of Chuanwu [Radix Aconiti Praeparata]) partitioned moxibustion was applied to "Baihui"(GV20), moxibustion was applied to "Fengfu"(GV16) and "Dazhui"(GV14), all for 20 min, once daily for 2 weeks, with one day's off between two weeks. For mice of the autophagy-inducer and 3-MA+moxibustion groups, Rapamycin (2 mg•kg-1•d-1) and 3-MA (1.5 mg•kg-1•d-1) were separately administered by intraperitoneal injection for 2 weeks. The cognitive ability was examined by Morris water maze tests, and the ultrastructural changes (including autophagic lysosomes, etc.) of hippocampal neurons were observed by using transmission electron microscopy. The immunoactivity of cerebral cortex and hippocampal Amyloid ß peptide 1-42 (Aß1-42) was detected by immunohistochemistry, and the expression levels of hippocampal LC3-Ⅰ, LC3-Ⅱ, p62 and p-P70S6K proteins were detected by Western blot. RESULTS: After modeling, the escape latency of Morris water maze tasks was prolonged in the model group than in the normal control group (P<0.05) and obviously shortened in the moxibustion and autophagy-inducer groups (not the autophagy-inhibitor group) than in the model group (P<0.05). Results of transmission electron microscope showed deformed, irregular or atrophic neurons with rough and incomplete and fuzzy nuclear membrane, and decreased intracellular autophagosomes in the hippocampus in the model group, and partial irregular, atrophic neurons with more autophagic vesicles and lysosomes in the moxibustion group. The expression levels of Aß1-42 in both cerebral cortex and hippocampus tissues, and LC3-Ⅰ, p62 and p-P70S6K proteins in the hippocampus were consi-derably up-regulated in the model group relevant to the normal control group (P<0.01), and evidently down-regulated in both moxibustion and autophagy-inducer groups (not the autophagy-inhibitor group) than in the model group (P<0.01), while that of hippocampal LC3-Ⅱ protein and LC3-Ⅱ/Ⅰ ratio levels were obviously down-regulated in the model group relevant to the normal control group (P<0.01), and significantly up-regulated in both moxibustion and autophagy-inducer groups (not the autophagy-inhibitor group) than in the model group (P<0.01).. CONCLUSION: Moxibustion can improve the cognitive ability of APP/PS1 double-transgenic AD mice, which is associated with its effects in promoting hip-pocampal and cerebral cortex autophagy level, and down-regulating the expression levels of Aß1-42, LC3-Ⅰ, p62 and p-P70S6K proteins in the hippocampus.


Assuntos
Doença de Alzheimer , Autofagia , Moxibustão , Peptídeos beta-Amiloides , Precursor de Proteína beta-Amiloide , Animais , Proteínas Relacionadas à Autofagia , Córtex Cerebral , Cognição , Modelos Animais de Doenças , Hipocampo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos
11.
Yakugaku Zasshi ; 128(11): 1689-98, 2008 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-18981705

RESUMO

The present study was designed to investigate the possible properties of the injured brain neurocytes, the expression of heat shock protein70 (HSP70) and Fas protein after acute local ischemia brain injury and local cerebral ischemia-reperfusion injury in rats and to investigate the protecting mechanism of puerarin on the brain neurocytes of rats in acute local ischemia brain injury and local cerebral ischemia-reperfusion injury. A rat model of acute local cerebral ischemia was made by ligatting the middle cerebral artery. The rat model of local cerebral ischemia and reperfusion injury was made by ligatting the middle cerebral artery for 30 min then opened for 30 min. Rats of puerarin treating group were injected with puerarin in dose of 30 mg/kg(-1) by intraperitoneal injection 30 min before ischemia. HSP70 and Fas protein expressions in brain tissue were detected by SP method of histochemistry. In addition, dead brain neurocytes were counted and their morphology was observed. The results indicated that puerarin can limit the tissue injury caused by local cerebral ischemia injury through improving expression of HSP70, and limit the tissue injury caused by local cerebral ischemia-reperfusion through decreasing the Fas expression and improving expression of HSP70. On the basis of these results, it may be concluded that puerarin can protect the brain neurocytes of rats in acute local ischemia brain injury and local cerebral ischemia-reperfusion injury, which may be different according to the different injury mechanism.


Assuntos
Lesões Encefálicas/prevenção & controle , Isquemia Encefálica/prevenção & controle , Encéfalo/metabolismo , Isoflavonas/uso terapêutico , Neurônios/metabolismo , Traumatismo por Reperfusão/prevenção & controle , Vasodilatadores/farmacologia , Vasodilatadores/uso terapêutico , Doença Aguda , Animais , Feminino , Proteínas de Choque Térmico HSP70/metabolismo , Isoflavonas/farmacologia , Masculino , Ratos , Ratos Wistar , Receptor fas/metabolismo
12.
Zhongguo Zhong Yao Za Zhi ; 30(2): 93-6, 2005 Jan.
Artigo em Zh | MEDLINE | ID: mdl-15714808

RESUMO

The progress in the research of the pharmacological activities and clinical applications of preparations of dried leaf of Ginkgo biloba is summarized. The preparations of G. biloba contain various chemical constituents, and have activities of relaxing blood vessel, oxidation, improving learning and memory. The clinical applications include treatments for coronary heart disease, cardiac angina, cerebral infarction, chronic brain syndrome and diabetic nephropathy, etc.


Assuntos
Cardiotônicos/farmacologia , Medicamentos de Ervas Chinesas/farmacologia , Ginkgo biloba , Fármacos Neuroprotetores/farmacologia , Fitoterapia , Doença de Alzheimer/tratamento farmacológico , Angina Pectoris/tratamento farmacológico , Animais , Antioxidantes/farmacologia , Medicamentos de Ervas Chinesas/isolamento & purificação , Medicamentos de Ervas Chinesas/uso terapêutico , Ginkgo biloba/química , Humanos , Hipertensão/tratamento farmacológico , Folhas de Planta/química , Plantas Medicinais/química
13.
Zhongguo Zhong Yao Za Zhi ; 30(6): 457-9, 2005 Mar.
Artigo em Zh | MEDLINE | ID: mdl-15810455

RESUMO

OBJECTIVE: To study the protection of puerarin on the cerebral injury in the rats with acute local ischemia. METHOD: Rat was evaluated model of acute local cerebral ischemia was made by ligating middle cerebral artery. The cerebral damage toxylin and eosin((HE). RESULT: The number of died neurons were significantly less in puerarin-treated rats than in the rats with cerebral ischemia (P < 0. 05). Similarly, the cerebral edema were significantly attenuated in the puerarin-treated rats as compared with cerebrally ischemic rats. CONCLUSION: Puerarin can prevent the neuron from damage induced by acute cerebral ischemia.


Assuntos
Isquemia Encefálica/patologia , Córtex Cerebral/patologia , Isoflavonas/farmacologia , Fármacos Neuroprotetores/farmacologia , Animais , Morte Celular/efeitos dos fármacos , Feminino , Infarto da Artéria Cerebral Média/patologia , Masculino , Neurônios/efeitos dos fármacos , Ratos , Ratos Wistar , Vasodilatadores/farmacologia
14.
Zhongguo Zhong Yao Za Zhi ; 30(7): 538-40, 2005 Apr.
Artigo em Zh | MEDLINE | ID: mdl-16011103

RESUMO

OBJECTIVE: To study the effect of puerarin on the expression of Hsp (heat shock protein) 70 in the rats with cerebral injury induced by acute local ischemia. METHOD: Rat model of acute local cerebral ischemia was made by ligating middle cerebral artery. The Hsp70 expression in brain tissue was detected by SP method of immunohistochemistry. RESULT: The expression of Hsp70 was significantly higher in puerarintreated rats than those in the rats with cerebral ischemia. CONCLUSION: Puerarin can enhance the level of Hsp70 expression in the rats with cerebral injury induced by acute local ischemia.


Assuntos
Isquemia Encefálica/metabolismo , Proteínas de Choque Térmico HSP70/metabolismo , Isoflavonas/farmacologia , Fármacos Neuroprotetores/farmacologia , Pueraria , Animais , Isquemia Encefálica/etiologia , Isquemia Encefálica/patologia , Feminino , Infarto da Artéria Cerebral Média/complicações , Isoflavonas/isolamento & purificação , Masculino , Neurônios/metabolismo , Fármacos Neuroprotetores/isolamento & purificação , Plantas Medicinais/química , Pueraria/química , Ratos , Ratos Wistar
15.
Zhongguo Zhong Yao Za Zhi ; 28(12): 1178-80, 2003 Dec.
Artigo em Zh | MEDLINE | ID: mdl-15617506

RESUMO

OBJECTIVE: To observe the effect of Puerarin Injection on the hemorheology in acute blood-stasis model rats. METHOD: The acute blood-stasis model rats were made by being soaked in ice water afer being injected adrenaline hydrochloride injection in a major dose. The changes of viscosity of whole blood and plasma, blood yield stress, erythrocyte aggregation and the maximum rate of platelet aggregation in the acute blood-stasis model rats were measured with Auto-Viscometer, and then the influence of Puerarin Injection on the hemorheology in the model rats was investigated. RESULT: The viscosity of whole blood and plasma, and blood yield stress in the acute blood-stasis model rats were significantly higher than those in the normal control group (P < 0.01, P < 0.05). Both the high dose and the low dose of Puerarin Injection could reduce the viscosity of whole blood and plasma, blood yield stress and the maximum rate of platelet aggregation in the acute blood-stasis model rats (P < 0.01, P < 0.05). The high dose could also reduce the erythrocyte aggregation and the deformed Index of red blood cell (P < 0.05). CONCLUSION: Puerarin Injection can ameliorate the hemorheology in acute blood-stasis model rats, and it has a dose-response relationship.


Assuntos
Transtornos da Coagulação Sanguínea/sangue , Hemorreologia/efeitos dos fármacos , Isoflavonas/farmacologia , Pueraria , Animais , Viscosidade Sanguínea/efeitos dos fármacos , Relação Dose-Resposta a Droga , Agregação Eritrocítica/efeitos dos fármacos , Deformação Eritrocítica/efeitos dos fármacos , Feminino , Injeções , Isoflavonas/administração & dosagem , Isoflavonas/isolamento & purificação , Masculino , Plantas Medicinais/química , Agregação Plaquetária/efeitos dos fármacos , Pueraria/química , Ratos , Ratos Wistar
16.
Dongwuxue Yanjiu ; 32(5): 556-60, 2011 Oct.
Artigo em Zh | MEDLINE | ID: mdl-22006810

RESUMO

The winter feeding sites of White-browed Hill Partridge (Arborophila gingica) was investigated in Jiuwanshan National Nature Reserve in Guangxi from November to December 2010. With the 34 found feeding sites, the used sites (n=25) were compared with the control sites (n=25), and 19 parameters were measured at each site. The results showed that White-browed Hill Partridge randomly use broadleaved forest, mixed coniferous-broadleaved forest, mixed broadleaved-bai bamboo (Indosasa shibataeoides) forest and bai bamboo forest, while they rarely occurred in mao bamboo (Phyllostachys edulis) forest and China fir (Cunninghamia lanceolata) forest. The birds prefer to select the southeast-facing slops of 20-44 degrees, with smaller bai bamboo-shrub and grass density, lower bai bamboo-shrub and grass coverage, and greater shatter coverage. We found that the main selection factors at the used and control feeding sites, using the Step DA, were the shatter coverage, slope, and bai bamboo-shrub coverage. The veracity to distinguish was 86.0%. The feeding sites selection of White-browed Hill Partridge is associate with food resources and safety index, thus, we suggest that the protection should focus on these two aspects.


Assuntos
Ecossistema , Comportamento Alimentar , Galliformes/fisiologia , Animais , China , Estações do Ano , Árvores
17.
Int J Pharm ; 403(1-2): 37-45, 2011 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-20969937

RESUMO

In rats we examined the effects of some common excipients on the intestinal absorption of ganciclovir (GCV), a BCS-III drug and substrate of P-gp, by assessing its in vitro transfer from mucosa to serosa and in situ transepithelial permeation. In vitro, all selected excipients (concentration range 0.1-1% [w/v]) could increase the transport amount of GCV in the everted gut sac model. Whereas enhancement by F-68 demonstrated regional differences like verapamil, PEG-400, Tween-80 and EL-35 exhibited no regional differences. In situ studies were performed by an improved perfusion model, single-pass perfusion with whole small intestine, to determine more accurately the permeability of lipophobic compounds. The permeability of GCV was significantly increased by all excipients. The effects of EL-35 and F-68 were dose-dependent but those of PEG-400 and Tween-80 were not. The results suggest that enhancements of intestinal absorption of GCV by these excipients are probably due to inhibition of P-gp-mediated drug efflux. It could be deduced from their different properties that both blocking binding sites of P-gp and altering membrane fluidity were involved in their P-gp-inhibition. The former mechanism might be involved for F-68, while the latter one might account for the effects of PEG-400, Tween-80 and EL-35.


Assuntos
Membro 1 da Subfamília B de Cassetes de Ligação de ATP/antagonistas & inibidores , Antivirais/farmacocinética , Excipientes/farmacologia , Ganciclovir/farmacocinética , Absorção Intestinal/efeitos dos fármacos , Intestino Delgado/metabolismo , Animais , Antivirais/química , Transporte Biológico , Cromatografia Líquida de Alta Pressão , Epitélio/efeitos dos fármacos , Epitélio/metabolismo , Epitélio/parasitologia , Excipientes/química , Ganciclovir/química , Glucose/farmacocinética , Técnicas In Vitro , Intestino Delgado/efeitos dos fármacos , Intestino Delgado/patologia , Masculino , Modelos Biológicos , Perfusão , Ratos , Ratos Sprague-Dawley , Especificidade por Substrato
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA