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1.
Eur Rev Med Pharmacol Sci ; 27(4): 1609-1613, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36876697

RESUMEN

OBJECTIVE: The aim of this study is to analyze the application effect of traditional Chinese medicine (TCM) comprehensive nursing in diabetic foot patients. PATIENTS AND METHODS: 230 patients with diabetic foot admitted to Third people's Hospital of Haikou from January 2019 to April 2022 were classified as two groups, which consisted of a control group (n = 95) and an experimental group (n = 135). The control group took routine nursing intervention, while the experimental group took TCM comprehensive nursing intervention. The effect of intervention was compared by inflammatory factors (B-FGF, EGF, VEGF, and PDGF), wound area, self-rated anxiety scale (SAS), and self-rated depression scale (SDS). RESULTS: After nursing, the levels of B-FGF, EGF, VEGF, and PDGF were higher in the experimental group (all p < 0.05). The total effective rate of diabetic foot recovery in the experimental group was 94.87% (74/78), higher than 87.67% (64/73) in the control group (p = 0.026). After nursing, the scores of SAS and SDS in the experimental group were lower than those in the control group (all p < 0.05). CONCLUSIONS: The application of TCM comprehensive nursing in diabetic foot patients can greatly change the levels of B-FGF, EGF, VEGF, and PDGF in wound tissue, promote the healing of ulcer surface, improve patients' anxiety and depression, and enhance the quality of life of patients.


Asunto(s)
Diabetes Mellitus , Pie Diabético , Humanos , Factor de Crecimiento Epidérmico , Medicina Tradicional China , Calidad de Vida , Factor A de Crecimiento Endotelial Vascular
2.
Zhonghua Yi Shi Za Zhi ; 50(4): 246-249, 2020 Jul 28.
Artículo en Chino | MEDLINE | ID: mdl-32911923

RESUMEN

"Fangji Zhuan"(, Biographies of Technicians), a chapter from Songshi(, History of the Song) uses time as a sequence and adopts a narrative method. It contains 42 talents, including ephemeris, five elements of law, medical practitioners, and Taoists. Among them, there are 25 good medical practitioners, which are rich in content and detailed in history. Based on the biographies of medical doctors in "Fangji Zhuan", this article summarizes and records the life history of 25 different types of medical doctors in terms of divisions, contributions, rewards and punishments, etc., which reflects the career status of medical doctors in the Song Dynasty to a certain extent. The role and contribution in medical development are of great significance.

3.
Anim Reprod Sci ; 211: 106208, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31785624

RESUMEN

This study was conducted to investigate effects of short-term nutritional supplementation on concentrations of reproductive hormones in follicular fluid and on mRNA abundance in granulosa cells (GCs) during the luteal phase of ewes. Eighteen ewes were randomly assigned to treatment or control groups (n = 9, each group). All the ewes were subjected to estrous synchronization using a Controlled Intravaginal Releasing Device (CIDR). From the second to the eleventh day of estrous synchronization, ewes were fed a diet with a relatively greater (treatment group) or a maintenance (control group) energy content. Samples of follicular fluid and GCs were collected from antral follicles of estrous ewes after CIDR removal. The results indicate mean FSH concentration of fluid in small follicles and mean LH concentrations of fluid in large follicles of the ewes in the treatment group were greater (P < 0.05) than that of ewes in the control group. Follicular fluid E2 concentrations were directly related (P < 0.05) to follicular diameter. The ewes of the treatment group had greater (P < 0.05), compared with the control group, abundances of Follicle Stimulating Hormone Receptor (FSHR) in small and medium follicles, and (P<0.05) Luteinizing Hormone Receptor (LHR), Steroid Acute Regulatory Protein (STAR), cytochrome P450 (CYP17A1, CYP19A1) enzyme and Estrogen Receptor (ESR1) in large follicles. The results of this study provide evidence for a potential mechanism by which short-term nutritional supplementation improves follicular development possibly because of increased expression of steroid synthesis-regulating genes in large follicles.


Asunto(s)
Suplementos Dietéticos , Ingestión de Energía , Líquido Folicular/química , Células de la Granulosa/metabolismo , ARN Mensajero/metabolismo , Ovinos/fisiología , Alimentación Animal/análisis , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Dieta/veterinaria , Sincronización del Estro , Femenino , Hormona Folículo Estimulante/metabolismo , Regulación de la Expresión Génica/efectos de los fármacos , Folículo Ovárico/metabolismo
4.
Animal ; 13(12): 2782-2791, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31218987

RESUMEN

Estimating the feed intake of grazing herbivores is critical for determining their nutrition, overall productivity and utilization of grassland resources. A 17-day indoor feeding experiment was conducted to evaluate the potential use of Medicago sativa as a natural supplement for estimating the total feed intake of sheep. A total of 16 sheep were randomly assigned to four diets (four sheep per diet) containing a known amount of M. sativa together with up to seven forages common to typical steppes. The diets were: diet 1, M. sativa + Leymus chinensis + Puccinellia distans; diet 2, species in diet 1 + Phragmites australis; diet 3, species in diet 2 + Chenopodium album + Elymus sibiricus; and diet 4, species in diet 3 + Artemisia scoparia + Artemisia tanacetifolia. After faecal marker concentrations were corrected by individual sheep recovery, treatment mean recovery or overall recovery, the proportions of M. sativa and other dietary forages were estimated from a combination of alkanes and long-chain alcohols using a least-square procedure. Total intake was the ratio of the known intake of M. sativa to its estimated dietary proportion. Each dietary component intake was obtained using total intake and the corresponding dietary proportions. The estimated values were compared with actual values to assess the estimation accuracy. The results showed that M. sativa exhibited a distinguishable marker pattern in comparison to the other dietary forage species. The accuracy of the dietary composition estimates was significantly (P < 0.001) affected by both diet diversity and the faecal recovery method. The proportion of M. sativa and total intake across all diets could be accurately estimated using the individual sheep or the treatment mean recovery methods. The largest differences between the estimated and observed total intake were 2.6 g and 19.2 g, respectively, representing only 0.4% and 2.6% of the total intake. However, they were significantly (P < 0.05) biased for most diets when using the overall recovery method. Due to the difficulty in obtaining individual sheep recovery under field conditions, treatment mean recovery is recommended. This study suggests that M. sativa, a natural roughage instead of a labelled concentrate, can be utilized as a dietary supplement to accurately estimate the total feed intake of sheep indoors and further indicates that it has potential to be used in steppe grassland of northern China, where the marker patterns of M. sativa differ markedly from commonly occurring plant species.


Asunto(s)
Alimentación Animal/análisis , Ingestión de Alimentos , Medicago sativa , Ovinos/fisiología , Ceras/análisis , Alcanos/análisis , Crianza de Animales Domésticos , Animales , Asteraceae , Biomarcadores/análisis , Chenopodiaceae , China , Dieta/veterinaria , Fibras de la Dieta , Suplementos Dietéticos/análisis , Heces/química , Herbivoria , Poaceae , Distribución Aleatoria
5.
Zhonghua Yu Fang Yi Xue Za Zhi ; 51(11): 1038-1040, 2017 Nov 06.
Artículo en Chino | MEDLINE | ID: mdl-29136752

RESUMEN

Objective: To evaluate the effect of breast massage at different time in the early period on maternal lactation after cesarean section. Methods: 80 women delivered by cesarean section were randomly selected from maternity ward of a hospital in Shandong province during Jan. 2013 to Jan. 2015; which were divided into four groups, with 20 patients in each. Three groups received 3 times of breast massage every 24 hoursbeginning from 2, 12 and 24 h after cesarean section, respectively. The control group didn't receive any breast massage. The starting time and status of lactation were observed and recorded after cesarean section. 5 ml venous blood sample was drawn from each patient respectively at 2 h before cesarean, 6, 12, 24, 48 and 72 h after cesarean to test the level of serum prolactin. The lactation status of each group was compared. Results: The P(50) (P(25)-P(75)) of starting time of lactation of the three massage groups and control group were 3 (2-6) h, 4 (2-8) h, 4 (3-12) h and 4 (2-12) h, respectively, whose differences showed no statistical significance (H=3.32, P=0.345).The number of delivered women with adequate lactation 24 hours after cesarean was 10 in the group who received massage beginning from 2 h after cesarean; while the number was only 2 in the control group. The number of delivered women with adequate lactation 48 hours after cesarean was 18 in the group who received massage beginning from 2 h after cesarean; while the number was 8 in the control group. The differences showed statistical significances (P values were 0.021 and 0.008, respectively). The serum prolactin level in the group of delivered women who received massage from 2 h after cesarean was separately (195.9±78.5), (176.0±96.5), (216.4±110.0), (190.0±56.8) and (184.8±69.6) µg/L at 2, 12, 24, 48 and 72 h after cesarean, which were significantly higher than those in the control group (which were (128.8±40.6), (127.3±66.8), (162.2±58.8), (145.1±64.7) and (141.7±49.3) µg/L, respectively) (P=0.007). Conclusion: Breast massage beginning from 2 hours after cesarean section can effectively improve the lactation status of delivered women.


Asunto(s)
Lactancia Materna , Cesárea , Lactancia , Masaje , Adulto , Femenino , Humanos , Embarazo
6.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi ; 31(14): 1113-1115, 2017 Jul 20.
Artículo en Chino | MEDLINE | ID: mdl-29798253

RESUMEN

Objective:To compare the effects of different thermal insulation measures on perioperative body temperature, peripheral circulation and blood coagulation time in patients undergoing vertical hemi laryngectomy.Method:Sixty eligible patients with elective vertical hemi laryngectomy were randomly divided into 3 groups: preoperative inflatable heating blanket group (A group, n=20), warmed irrigation group (B group, n=20), and control group (C group, n=20). The core temperature were recorded after entering the operating room, before induction, 20th minute during operation, entering PACU and 2nd hour after operation respectively. Blood samples were got at the end of operation to test pH, lactic acid, PT and APTT. After waking patients' SpO2 and thermal comfort were recorded.Result:The core temperatures at time points of 20th minute during operation and entering PACU were significantly different between C group and A group, C group and B group. There were significant difference in lactic acid, PT, APTT and SpO2 between C group and A group, C group and B group. Patients' thermal comfort in all three groups were different.Conclusion:Inflatable heating blanket during operation combined with using it before operation or fluid warmers during operation for perioperative body temperature protection duringelective vertical partial laryngectomy surgery can effectively prevent perioperative hypothermia, improve peripheral circulation and blood coagulation time changes, improve patients' comfort after operation.


Asunto(s)
Coagulación Sanguínea , Temperatura Corporal , Hipotermia/prevención & control , Laringectomía , Regulación de la Temperatura Corporal , Humanos , Hipertermia Inducida
7.
Genet Mol Res ; 14(1): 380-8, 2015 Jan 23.
Artículo en Inglés | MEDLINE | ID: mdl-25729970

RESUMEN

The expression of retinoid-acid-related orphan receptor α (RORα) was evaluated at the mRNA level using real-time polymerase chain reaction (qRT-PCR), and its expression localization was determined by in situ hybridization of adult Inner Mongolian cashmere goats at different times of the year. In situ hybridization demonstrated that RORαwas expressed in secondary hair follicles of the hair shaft, inner root sheath, outer root sheath, medulla, and other parts that are target organs of the RORαreceptor gene. qRT-PCR results showed that there was no significant difference in the RORa mRNA abundance in February, April, August, and October (P > 0.05), and the only difference occurred in December relative to February, August, and October (P < 0.05). This difference revealed that melatonin possibly promotes cashmere growth through the nuclear receptor RORα. This study provides a good foundation for future studies on the relationship between the melatonin receptor and cashmere growth; in addition, it provides new insights for increased cashmere production and quality.


Asunto(s)
Cabras/genética , Folículo Piloso/metabolismo , Miembro 1 del Grupo F de la Subfamilia 1 de Receptores Nucleares/genética , Animales , Secuencia de Bases , Bovinos , ADN Complementario/genética , Regulación de la Expresión Génica , Hibridación in Situ , Masculino , Datos de Secuencia Molecular , Miembro 1 del Grupo F de la Subfamilia 1 de Receptores Nucleares/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo , Reacción en Cadena en Tiempo Real de la Polimerasa , Alineación de Secuencia
8.
Genet Mol Res ; 12(1): 223-9, 2013 Jan 24.
Artículo en Inglés | MEDLINE | ID: mdl-23408408

RESUMEN

Nelumbo nucifera is widely used as food, as an ornamental, in medicine, and as packing material; it is also reported to have anti-HIV effects and antioxidant capacity. We sought an improved method for extracting high-quality total RNA from different tissues of N. nucifera. Four methods for RNA extraction were assessed for their ability to recover high-quality RNA applicable for evaluation of polyphenol oxidase (PPO) gene expression profiles. The recovery and quality of the RNA obtained from five different tissues by the best CTAB-LiCl method were evaluated through UV light absorbance. Both A(260)/A(280) and A(260)/A(230) absorbance ratios were more than 2.0; the yield ranged from 59.87 to 163.75 µg/g fresh weight. The brightness of the 28S band was approximately twice that of 18S; the latter was also considered as high-quality RNA. The PPO gene fragment (606 bp) was successfully amplified by RT-PCR, demonstrating the integrity of the isolated RNA. The relative expression levels of the PPO gene based on RT-PCR in five tissues of lotus were: rhizome buds (2.66), young leaves (2.42), fresh cut rhizome (2.02), petals (1.80), and petiole (1.65), using housekeeping gene ß-actin as an internal control. We concluded that the total RNA isolated by this protocol is of sufficient quality for molecular applications.


Asunto(s)
Nelumbo/química , Nelumbo/genética , Extractos Vegetales/química , ARN de Planta/química , ARN de Planta/genética , Actinas/química , Actinas/genética , Catecol Oxidasa/genética , Extractos Vegetales/genética
9.
Plant Dis ; 97(3): 429, 2013 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30722388

RESUMEN

Hosta (Hosta spp.) plants showing leaf deformation, puckering, and ink-bleed symptoms were collected in July 2012 from a park at Dongcheng district, Beijing, China. Three out of six samples tested positive for Hosta virus X (HVX) by immunostrip and double-antibody sandwich (DAS)-ELISA with HVX-specific serological reagents from Agdia Inc. (Elkhart, IN, USA). Filamentous viral particles were trapped and observed from the infected hosta leaf sap by immuno-serological electron microscopy (ISEM) (antibodies from Agdia). To confirm HVX infection, three ELISA-positive samples were analyzed by reverse transcription-PCR assay, using virus-specific primers HVXf (5'-ATCCGTTATCTACAGGGGACCAG-3') and HVXr (5'-TAAGTTAGTGGAACGGTTAGCCCGAT-3') that amplified a 1,067-bp fragment including the coat protein (CP) coding region. The CP nucleotide sequence comparisons showed 99% to 100% homology among the three isolates named HVXBJ4, HVXBJ5, and HVXBJ6 (GenBank Accession No. JX535292, JX535293, and JX535294) and with the HVX sequences previously reported in GenBank. HVX has been reported from the United States, Korea, the Netherlands, Poland, France, the Czech Republic, and New Zealand (1,2). To our knowledge, this is the first report of HVX infecting hosta plants in China. As an ornamental and medicinal plant, hosta has been cultivated in China for more than 2,000 years. The presence of HVX in Beijing is a potential threat to the landscape in the city. HVX can be spread by vegetative propagation material or mechanical contact (3). Hence, to cultivate HVX-free hosta and restrict the movement of HVX-infected hosta is vitally important in the future. HVX has become economically important in the world more recently. Globalization of trade in hosta plants has increased the risk of movement of HVX. The national plant protection organization should establish effective quarantine strategy and the growers take proper planting measures to avoid further spreading of this virus. References: (1) S. Currier et al. Plant Dis. 80:1040, 1996. (2) M. H. Park et al. Arch. Virol. 148:2039, 2003. (3) K. H. Ryu et al. Acta Hortic. 722:91, 2006.

10.
Exp Oncol ; 31(1): 27-32, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19300413

RESUMEN

AIM: To confirm the anticancer activity of steroid saponins isolated from the rhizome of Paris polyphylla var. yunnanensis and evaluate the structure-activity relationships of these steroid saponins in vitro and in vivo . MATERIALS AND METHODS: Eight known steroid saponins were isolated from the rhizome of Paris polyphylla . The LA795 lung adenocarcinoma cell line from mice was chosen to evaluate cytotoxicity by means of MTT assay, and to study apoptosis by means of AnnexinV-FITC/PI flow cytometry. Diosgenin-3alpha-L-arabinofuranosyl(1-->4)-[alpha-L-rhamnopyranosyl(1-->2)]-beta-D-glycopyranoside (compound 1), the main steroid saponin of Paris polyphylla , and diosgenin (Dio), the aglycone of major steroid saponins, were evaluated for antitumor activity on LA795 lung adenocarcinoma in T739 inbred mice. RESULTS: The steroid saponins showed remarkable cytotoxicity and caused typical apoptosis in a dose-dependent manner. They were evaluated in vivo by their effect on tumor developed in T739 inbred mice. The oral administration to T739 mice bearing LA795 lung adenocarcinoma of compound 1 and diosgenin significantly inhibited tumor growth, by 29.44% and 33.94%, respectively. HE staining showed that lungs and livers of treated mice underwent various levels of histopathological alterations. It was demonstrated by TUNEL assay that apoptosis rate in tumor cells was increased in comparison to cells in control mice. The 3-O-glycoside moiety and spirostanol structure played an important role in the anticancer activity of steroid saponins, and the number and the variety of glycosides of compounds strongly influenced on their anticancer activity. CONCLUSION: Rhizoma Paridis saponins showed anticancer activity against lung adenocarcinoma cell line, both in vitro and in vivo, and their effect was dependent on compounds' structure in a certain degree.


Asunto(s)
Antineoplásicos Fitogénicos/farmacología , Liliaceae/química , Saponinas/farmacología , Esteroides/farmacología , Animales , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/aislamiento & purificación , Apoptosis/efectos de los fármacos , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Femenino , Riñón/efectos de los fármacos , Riñón/patología , Hígado/efectos de los fármacos , Hígado/patología , Pulmón/efectos de los fármacos , Pulmón/patología , Masculino , Ratones , Ratones Endogámicos , Neoplasias Experimentales/tratamiento farmacológico , Neoplasias Experimentales/patología , Plantas Medicinales/química , Rizoma/química , Saponinas/química , Saponinas/aislamiento & purificación , Organismos Libres de Patógenos Específicos , Esteroides/química , Esteroides/aislamiento & purificación , Relación Estructura-Actividad
11.
J Food Sci ; 73(6): C476-81, 2008 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19241537

RESUMEN

Ku-Ding-Cha is a kind of herbal tea used commonly in China for its effects on hypertension, fatness, inflammation, and diuresis. The chlorophyll removal fraction from 60% aqueous acetone extract of Ku-Ding-Cha produced from the leaves of Ligustrum purpurascens (Oleaceae) exhibited observable antioxidant activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay (SC50 = 45 microg/mL). Further detailed phytochemical investigation on this fraction led to the isolation of 2 new phenylethanoid glycosides, ligupurpurosides C-D (1 and 2), and 2 new sugar esters, ligupurpurosides E-F (3 and 4), together with 15 known compounds (5 to 19). All of them, except for 7, 8, 9, 11, and 12, were isolated from Ku-Ding-Cha and its original plants for the first time. The chemical structures were elucidated based on the analysis of spectroscopic data, including 1D, 2D NMR, and FABMS. In addition, the isolated compounds were evaluated for their antioxidant activities by DPPH assay.


Asunto(s)
Glicósidos/aislamiento & purificación , Glicósidos/farmacología , Ligustrum/química , Extractos Vegetales/aislamiento & purificación , Extractos Vegetales/farmacología , Bebidas , Compuestos de Bifenilo , Medicamentos Herbarios Chinos , Depuradores de Radicales Libres/metabolismo , Glicósidos/química , Humanos , Picratos/metabolismo , Extractos Vegetales/química
12.
J Nat Prod ; 64(7): 870-3, 2001 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-11473414

RESUMEN

Three novel bisabolane-type sesquiterpenoids, phyllaemblic acids B (1) and C (2) and phyllaemblicin D (3), together with two new phenolic glycosides, 2-carboxylmethylphenol 1-O-beta-D-glucopyranoside (4) and 2,6-dimethoxy-4-(2-hydroxyethyl)phenol 1-O-beta-D-glucopyranoside (5), were isolated from the roots of Phyllanthus emblica. The structures of 1-5 were established by spectral and chemical methods. The absolute stereochemistry of 1 and 2 was determined by applying the PGME method.


Asunto(s)
Euphorbiaceae/química , Glucósidos/química , Plantas Medicinales/química , Sesquiterpenos/aislamiento & purificación , Glucósidos/aislamiento & purificación , Espectroscopía de Resonancia Magnética , Medicina Tradicional China , Conformación Molecular , Estructura Molecular , Fitoterapia , Raíces de Plantas/química , Sesquiterpenos/química , Relación Estructura-Actividad
13.
Chem Pharm Bull (Tokyo) ; 49(5): 537-40, 2001 May.
Artículo en Inglés | MEDLINE | ID: mdl-11383602

RESUMEN

Six new phenolic constituents, L-malic acid 2-O- (1), mucic acid 2-O- (5), mucic acid 1,4-lactone 2-O- (6), 5-O- (8), 3-O- (10), and 3,5-di-O- (11) gallates, were isolated from the fruit juice of Phyllanthus emblica together with their methyl esters (2-4, 7, 9), and their structures were determined by spectral and chemical methods. Compounds 5, 6, and 8, the major phenolic constituents of the juice, were present as an equilibrium mixture in aqueous solution.


Asunto(s)
Bebidas/análisis , Euphorbiaceae/química , Frutas/química , Fenoles/química , Plantas Medicinales/química , Antioxidantes/química , China , Cromatografía en Capa Delgada , Indicadores y Reactivos , Espectroscopía de Resonancia Magnética , Rotación Óptica , Espectrometría de Masa Bombardeada por Átomos Veloces
14.
Yi Chuan Xue Bao ; 28(4): 301-5, 2001.
Artículo en Chino | MEDLINE | ID: mdl-11329870

RESUMEN

Using hypothalamus as material and lambda gt10 as vector, chicken hypothalamus cDNA library has been constructed. The results showed that the titration of the cDNA library we constructed was 3.8 x 10(6), and the fragment length of inserted DNA ranged mainly from 1.0-3.0 kb. The ESTs was sequenced and primarily analyzed for ten clones randomly selected from above library. After analysis with BLASTn and FASTA3.1, it was found that four ESTs developed matched homologous sequence in chicken, four also had similar sequences in human and other species, have other two sequences were function-unknown gene. The sequences of ten ESTs we studied have been loaded into GenBank.


Asunto(s)
ADN Complementario/química , Etiquetas de Secuencia Expresada , Biblioteca de Genes , Hipotálamo/metabolismo , Animales , Pollos
15.
J Nat Prod ; 64(12): 1527-32, 2001 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11754604

RESUMEN

Six new ellagitannins, phyllanemblinins A-F (1-6), were isolated from Phyllanthus emblica, along with 30 known tannins and related compounds. Their structures were determined by spectral and chemical methods. Phyllanemblinins A (1) and B (2) were confirmed to be ellagitannins having a tetrahydroxybenzofuran dicarboxyl group and a hexahydroxydiphenoyl group, respectively, by chemical synthesis from furosin (8). Phyllanemblinin C (3) has a new acyl group at the glucose 2,4-positions and is structurally related to chebulagic acid. Phyllanemblinins D (4), E (5), and F (6) were found to be positional isomers of neochebuloyl 1(beta)-O-galloylglucose.


Asunto(s)
Antineoplásicos Fitogénicos/aislamiento & purificación , Euphorbiaceae/química , Taninos Hidrolizables , Plantas Medicinales/química , Taninos/aislamiento & purificación , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/farmacología , Fenómenos Químicos , Química Física , Cromatografía en Capa Delgada , Dicroismo Circular , Cristalografía por Rayos X , Ensayos de Selección de Medicamentos Antitumorales , Medicamentos Herbarios Chinos , Frutas/química , Células HL-60/efectos de los fármacos , Células HeLa/efectos de los fármacos , Humanos , Conformación Molecular , Estructura Molecular , Resonancia Magnética Nuclear Biomolecular , Corteza de la Planta/química , Hojas de la Planta/química , Tallos de la Planta/química , Espectrofotometría Infrarroja , Espectrofotometría Ultravioleta , Estereoisomerismo , Taninos/química , Taninos/farmacología , Células Tumorales Cultivadas/efectos de los fármacos
16.
J Nat Prod ; 63(11): 1507-10, 2000 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11087593

RESUMEN

Three ester glycosides, named phyllaemblicins A (3), B (4), and C (5), and a methyl ester (2), of a highly oxygenated norbisabolane, phyllaemblic acid (1), were isolated from the roots of Phyllanthus emblica, along with 15 tannins and related compounds. The structures of 2-5 were established by spectral and chemical methods.


Asunto(s)
Euphorbiaceae/química , Glicósidos/aislamiento & purificación , Plantas Medicinales/química , Terpenos/aislamiento & purificación , China , Glicósidos/química , Espectroscopía de Resonancia Magnética , Extractos Vegetales/análisis , Raíces de Plantas/química , Espectrometría de Masa Bombardeada por Átomos Veloces , Espectrofotometría Ultravioleta , Terpenos/química
18.
J Invest Dermatol ; 113(6): 1070-5, 1999 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-10594754

RESUMEN

The use of psoralens combined with exposure to ultraviolet A radiation is a major form of treatment for psoriasis and a number of other common skin diseases. Although psoralen plus ultraviolet A treatment is highly effective, careful follow-up cohort studies have shown that it greatly increases risk for the development of cutaneous squamous cell carcinoma and melanoma. Strategies to reduce the risk of cancer development in psoralen plus ultraviolet A-treated populations are highly desirable. In prior studies, we demonstrated that green tea and constituent polyphenols protect against ultraviolet B-induced carcinogenesis and reduce the growth rate of established tumors in skin. In this study, we show that pre- and post-treatment with standardized green tea extract in psoralen plus ultraviolet A treatment populations abrogates the psoralen plus ultraviolet A-induced photochemical damage to skin. Intact mouse and human skin and reconstituted human skin were employed to assess the effect of both topical and oral administration of standardized green tea extract against psoralen plus ultraviolet A-induced photodamage. Oral administration of standardized green tea extract prior to and during multiple psoralen plus ultraviolet A treatments reduced hyperplasia and hyperkeratosis in murine skin. Standardized green tea extract treatment also inhibited accumulation of c-fos and p53 protein induction following a single exposure to psoralen plus ultraviolet A. c-fos and p53 positive cells in psoralen plus ultraviolet A-treated skin were found to be increased by 55.4 +/- 13. 6% and 62.3 +/- 10.5%, respectively, compared with saline-treated unexposed control skin. Oral administration of 0.4 or 0.8% standardized green tea extract inhibited c-fos protein accumulation by 18.5% and 46.2% (p < 0.05), respectively, and p53 protein accumulation by 26.1% and 54.3% (p < 0.05), respectively. Similarly proliferating cell nuclear antigen staining, a marker of cell proliferation was induced (73.7%) in psoralen plus ultraviolet A-treated skin. Oral administration of 0.4% or 0.8% standardized green tea extract 1 d after psoralen plus ultraviolet A treatment was effective in reducing psoralen plus ultraviolet A-induced inflammatory responses including erythema and edema formation. When standardized green tea extract was applied to EpiDerm, a reconstituted human skin equivalent, psoralen plus ultraviolet A-induced 8-methoxypsoralen-DNA adduct formation and p53 protein accumulation were inhibited. Topical application of 0.2 mg 8-methoxypsoralen per cm2 followed by exposure to ultraviolet A (2.5 J per cm2) resulted in delayed erythema formation in human subjects. Pretreatment of human skin with topical application of 0.2 mg standardized green tea extract per cm2 30 min prior to psoralen plus ultraviolet A treatment resulted in an almost complete abrogation of psoralen plus ultraviolet A-induced erythema. In summary, these data demonstrate that standardized green tea extract protects against psoralen plus ultraviolet A-induced phototoxicity by inhibiting DNA damage and diminishing the inflammatory effects of this modality.


Asunto(s)
Dermatitis Fototóxica/prevención & control , Terapia PUVA/efectos adversos , Piel/efectos de los fármacos , , Animales , Daño del ADN , Femenino , Humanos , Ratones , Ratones Pelados , Antígeno Nuclear de Célula en Proliferación/análisis , Proteínas Proto-Oncogénicas c-fos/análisis , Proteína p53 Supresora de Tumor/análisis
19.
Photochem Photobiol ; 70(4): 637-44, 1999 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-10546558

RESUMEN

In previous studies, we showed that green tea and black tea extracts and their major polyphenolic constituents protect against UVB light-induced carcinogenesis in murine skin. All of these studies required chronic administration of tea extracts or specific constituents either topically or orally. However, it is not known whether acute or subchronic administration of black tea extracts or constituents can ameliorate UVB-induced early effects in skin. In the present study, cultured keratinocytes and mouse and human skin were employed to assess the effect of both oral and topical administration of standardized black tea extract (SBTE) and its two major polyphenolic subfractions namely BTF1 and BTF2 against UVB-induced photodamage. In SKH-1 hairless mice, topical application of SBTE (0.2 mg/cm2) prior to UVB exposure (180 mJ/cm2) resulted in 40% reduced incidence and 64% reduced severity of erythema and 50% reduction in skinfold thickness by day 6 when compared to nontreated UVB-exposed animals. The SBTE was also effective in protecting against UVB-induced erythema in human volunteers. Administration of SBTE 5 min after UVB irradiation was similarly effective in reducing UVB-induced inflammation in both murine and human skin. The major polyphenolic subfractions, BTF1 and BTF2, were also effective in protecting in mouse skin. The SBTE subfractions inhibited UVB-induced tyrosine phosphorylation of epidermal growth factor receptor (EGFR). The UVB irradiation of human epidermoid carcinoma cells resulted in 3.3-fold induction of tyrosine phosphorylation of EGFR. Pretreatment with BTF1 and BTF2 reduced tyrosine phosphorylation of EGFR by 53% and 31%, respectively. The UVB-mediated enhanced expression of the early response genes, c-fos and c-jun in human epidermal keratinocytes was reduced in a dose-dependent manner by SBTE. Topical application of SBTE was also effective in reducing accumulation of c-fos and p53 proteins by 82% and 78%, respectively, in UVB-exposed mouse skin. These data provide evidence that constituents of black tea can abrogate UVB-induced erythema and associated early events in murine and human skin.


Asunto(s)
Dermatitis Fototóxica/prevención & control , Piel/efectos de los fármacos , Piel/efectos de la radiación , Té/química , Administración Oral , Administración Tópica , Adulto , Animales , Línea Celular , Receptores ErbB/metabolismo , Receptores ErbB/efectos de la radiación , Femenino , Genes fos/efectos de los fármacos , Genes fos/efectos de la radiación , Genes jun/efectos de los fármacos , Genes jun/efectos de la radiación , Genes p53/efectos de los fármacos , Genes p53/efectos de la radiación , Humanos , Ratones , Ratones Pelados , Piel/lesiones , Rayos Ultravioleta/efectos adversos
20.
J Asian Nat Prod Res ; 1(3): 189-97, 1999.
Artículo en Inglés | MEDLINE | ID: mdl-11254031

RESUMEN

Three new styryl-lactones 8-acetylgoniofufurone(1), 7-acetylgonio-pypyrone(3), and 5-acetylgoniopypyrone(4), along with ten known compounds, goniofufurone(2), goniopypyrone(5), goniothalamin, goniothalenol, (+)-isoaltholactone, goniodiol, 7-acetylgoniodiol, goniotriol, 8-acetylgoniotriol, 9-deoxygoniopypyrone were isolated from the rhizomes of Goniothalamus griffithii Hook f. et. Thoms. Their structures were elucidated by IR, MS, NMR spectra and chemical evidence. All compounds showed cytotoxic activities against human cancer cell lines.


Asunto(s)
Lactonas/química , Magnoliopsida/química , Plantas Medicinales/química , Lactonas/aislamiento & purificación , Resonancia Magnética Nuclear Biomolecular/métodos , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación , Estereoisomerismo
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