Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 23
Filtrar
1.
Zhonghua Yu Fang Yi Xue Za Zhi ; 54(3): 320-322, 2020 Mar 06.
Artigo em Chinês | MEDLINE | ID: mdl-32187939

RESUMO

From November to December of 2018, twenty 65-year-old or older women patients with knee osteoarthritis were recruited from the Department of Physical Therapy, the First Affiliated Hospital of Anhui Medical University. Meanwhile, twenty healthy 65-year-old or older women were recruited from the local community. The results showed that the knee contact angle of the patient group was more flexed (P=0.040), and the minimum angle of the knee joint increased (P=0.008) during the stance period compared to the healthy group. However, there was no significant difference in the maximum contact angle between the angle of hip and ankle joints. In addition, the tibialis anterior muscle of the patients was significantly smaller than the healthy group (P=0.023). Therefore, knee osteoarthritis could change the gait and muscle activity of older women, especially the knee joint.


Assuntos
Marcha , Articulação do Joelho/fisiopatologia , Músculo Esquelético/fisiopatologia , Osteoartrite do Joelho/fisiopatologia , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Amplitude de Movimento Articular/fisiologia
2.
J Asian Nat Prod Res ; 8(4): 335-43, 2006 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-16864444

RESUMO

Dracorhodin perchlorate, an anthocyanin red pigment, induces human premyelocytic leukemia HL-60 cell death through apoptotic pathway. Caspase -1, -3, -8, -9, and -10 inhibitors partially reversed the cell death induced by dracorhodin perchlorate. Caspase-3 and -8 were activated followed to the degradation of caspase-3 substrates, inhibitor of caspase-activated DNase (ICAD) and poly-(ADP-ribose) polymerase (PARP). Dracorhodin perchlorate up-regulated the expression ratio of mitochondrial proteins, Bax/Bcl-XL. The cell death was accompanied with phosphorylation of ERK, JNK and p38 MAPK and partially reduced by MEK inhibitor (PD98059), JNK MAPK inhibitor (SP600125) and p38 MAPK inhibitor (SB 203580). Taken together, dracorhodin perchlorate-induced apoptosis in HL-60 cells via up-regulation of Bax, activation of caspases and ERK/p38/JNK MAPKs.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Apoptose/efeitos dos fármacos , Benzopiranos/farmacologia , Antineoplásicos Fitogênicos/química , Benzopiranos/química , Caspases/metabolismo , Relação Dose-Resposta a Droga , Ativação Enzimática , Células HL-60 , Humanos , MAP Quinase Quinase 4/metabolismo , Quinases de Proteína Quinase Ativadas por Mitógeno/metabolismo , Estrutura Molecular , Proteína X Associada a bcl-2/metabolismo , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo
3.
Artigo em Chinês | MEDLINE | ID: mdl-12571964

RESUMO

OBJECTIVE: To determine the phylogenetic relationships between Schistosoma sinensium and other Schistosomatid species using DNA sequence data. Two segments of the nuclear rDNA repeat, the second internal spacer (ITS2) and large subunit (LSU/12S) were selected for sequencing. METHODS: Adult worms stored in 100% methanol were washed 3 times with 0.1 x TE (pH8.0) and the genomic DNA was extracted by the GNT-K method. The target regions were amplified by PCR using specific primers. The PCR products were purified before ligation into the plasmid pT-adv (Clontech). Recombinant plasmids were amplified in E. coli (strain TOP10), extracted and purified using routine methods and then sequenced using M13 primers (F/R) on a Licor long-read auto-sequencer. Sequences of related schistosomes were retrieved from GenBank and aligned with our data in the sequence editor ESEE. Gene trees were constructed in PHYLIP (Version 3.6 alpha July, 2,000) and MEGA (version 2.0 beta build 3) using both Maximum Parsimony and Neighbor-Joining methods. For parsimony analysis, all characters were treated as unordered and with equal weights. At least 3,000 cycles of bootstrapping were carried out. For analysis in MEGA, all gap columns were deleted. Schistosomatium douthitti and Trichobilharzia were used as outgroups. RESULTS: The ITS2 and LSU sequences of Schistosoma sinensium were obtained. The ITS2 sequence of Trichobilharzia sp. was reported here for the first time. CONCLUSION: The phylogenetic trees from these data of nuclear rDNA suggested that S. sinensium belongs to the Asian schistosome group. And this species might be an ancient member in the Asian clade.


Assuntos
DNA Espaçador Ribossômico/química , DNA Ribossômico/química , Filogenia , Schistosoma/genética , Animais , Sequência de Bases , Dados de Sequência Molecular , Schistosoma/classificação , Schistosomatidae/genética , Análise de Sequência de DNA
4.
Artigo em Chinês | MEDLINE | ID: mdl-12572023

RESUMO

OBJECTIVE: To study the mitochondrial cytochrome C oxidase 1(CO1) gene of Oncomelania snails from Miao River area in Hubei Province. METHODS: Oncomelania snails were collected from Miao River area, including upstream and downstream. Genomic DNA was extracted from the tissue of the snail. PCR was used to amplify a fragment of the CO1 gene. Sequences of the CO1 fragment were determined directly from the purified PCR products by an automated sequencer. Sequences for each individual were assembled and edited using ESEE 3.0 s. A distance matrix was computed using program DNADISt of PHYLIP(3.57). Unrooted maximum likelihood trees were calculated from program FITCH. RESULTS: The amplified CO1 gene of the snail was a fragment of 638 bp in length. Sequence analysis showed that the accumulated variable sites were significant different between upstream and downstream populations, being 29 and 46, respectively. From the number of variable sites in the gene, snails in this area were roughly separated into two groups. Each of them was a mixture of both upstream and downstream snails. Same haplotypes were confirmed to be present among the collected sites along the river. From the distance matrix of sequence divergence, the population upstream vs downstream differed by 0.0221 +/- 0.0105. CONCLUSION: There were more variation in downstream population than that in upstream. Gene flow was identified in these populations. The phylogenetic trees suggest the existence of two groups, but all of them belong to 0. h. hupensis.


Assuntos
Complexo IV da Cadeia de Transporte de Elétrons/genética , Caramujos/enzimologia , Animais , Sequência de Bases , China , DNA Mitocondrial/genética , Variação Genética , Haplótipos , Dados de Sequência Molecular , Reação em Cadeia da Polimerase , Análise de Sequência de DNA , Caramujos/classificação
6.
Int J Dermatol ; 35(5): 337-9, 1996 May.
Artigo em Inglês | MEDLINE | ID: mdl-8734655

RESUMO

BACKGROUND: A viral etiology has been suspected in papillomatosis of the external auditory canal (PEAC), but virus particles have not been detected so far, although they are easily demonstrable in skin warts. The purpose of the study was to solve this discrepancy by the use of polymerase chain reaction (PCR). MATERIALS AND METHODS: Specimens from the external auditory canal of 14 patients with PEAC, but no human papilloma virus infection of the genital areas, were examined histologically by light and electron microscopy, as well as by PCR to detect viral DNA. RESULTS: Histologically, papillomatosis was present in all specimens. Vacuolated cells were found in the upper part of the stratum malpighii in five cases. On electron microscopy, the numbers of perichromatin and interchromatin granules were increased, but no viral granules were observed. In all specimens, DNA of HPV 6 was detected using PCR, but there was no evidence of DNA of other HPV. CONCLUSIONS: Papilloma of the external auditory canal is produced by infection with HPV 6.


Assuntos
DNA Viral/análise , Meato Acústico Externo/virologia , Neoplasias da Orelha/virologia , Papiloma/virologia , Papillomaviridae/ultraestrutura , Adulto , Idoso , Cromatina/ultraestrutura , Primers do DNA , Sondas de DNA , Feminino , Humanos , Immunoblotting , Hibridização In Situ , Masculino , Microscopia Eletrônica , Pessoa de Meia-Idade , Papillomaviridae/genética , Infecções por Papillomavirus/virologia , Reação em Cadeia da Polimerase , Infecções Tumorais por Vírus/virologia , Vacúolos/ultraestrutura , Verrugas/virologia
7.
Int J Dermatol ; 34(3): 209-11, 1995 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-7751101

RESUMO

BACKGROUND: The recurrence rates of condyloma acuminata are high. The reasons for the relatively high relapse rates with different treatments are unknown. METHODS: Twelve specimens of condylomata acuminata of the vulva were excised from 12 patients and divided into three parts. One part was untreated, the second and the third parts were treated with CO2 laser and microwave, respectively. DNA was then extracted from tissue by proteolytic digestion and amplified by the polymerase chain reaction. Dot blots were performed with the use of radiolabeled consensus and human papilloma virus (HPV) type-specific probes. RESULTS: HPV DNA was amplified in 100% of untreated specimens (6-HPV 6; 6-HPV 11), and in 83.3% and 50% of specimens treated with CO2 laser and microwave, respectively. There was a significant difference in detection between untreated and microwave-treated specimens (chi 2 = 4.18, P < 0.05). CONCLUSION: Microwave damages HPV DNA more effectively than CO2 laser.


Assuntos
Condiloma Acuminado/terapia , Condiloma Acuminado/virologia , DNA Viral/análise , Terapia a Laser , Micro-Ondas/uso terapêutico , Papillomaviridae/genética , Reação em Cadeia da Polimerase , Doenças da Vulva/terapia , Doenças da Vulva/virologia , Dióxido de Carbono , Condiloma Acuminado/cirurgia , Sondas de DNA de HPV , DNA Viral/efeitos da radiação , Diatermia , Feminino , Amplificação de Genes , Humanos , Immunoblotting , Hibridização de Ácido Nucleico , Papillomaviridae/isolamento & purificação , Doenças da Vulva/cirurgia
8.
J Dermatol Sci ; 7(2): 84-8, 1994 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-8060918

RESUMO

We have analyzed the specimens from 16 women with hirsutoid papillomas of the vulvae for the presence of HPV DNA using the polymerase chain reaction. The subjects' ages ranged from 27 to 43 years. In all cases, smooth or filiform papules were symmetrically located on the inner surface of both labia minora. Histologically, the lesions consist of acanthosis or papillomatosis without koilocytes and mitotic activity. Eight of 16 specimens were studied by transmission electron microscopy (TEM). No HPV granules were found in the nuclei of keratinocytes. HPV DNA could not be detected in all specimens. Positive controls were present in each assay. These results suggest that the papules of hirsutoid papillomas of the vulvae are unrelated to HPV. Chronic irritants and inflammation may play an important role in pathogenesis.


Assuntos
Sondas de DNA de HPV , DNA Viral/análise , Papiloma/microbiologia , Reação em Cadeia da Polimerase , Neoplasias Vulvares/microbiologia , Adulto , Sequência de Bases , Feminino , Humanos , Masculino , Microscopia Eletrônica , Dados de Sequência Molecular , Papiloma/ultraestrutura , Neoplasias Penianas/patologia , Neoplasias Vulvares/ultraestrutura
9.
Pediatr Dermatol ; 10(4): 392-3, 1993 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-8302752
10.
Parasitology ; 103 Pt 1: 77-83, 1991 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-1945527

RESUMO

The routes of penetration and the strategies of invasion of Schistosoma japonicum miracidia in the snail vector Oncomelania hupensis were observed in a histological study. In all species of the genus Schistosoma, it is usually assumed that the miracidia achieve penetration through the tegument. Our results showed that at least 57% of S. japonicum miracidia penetrated the snail by natural openings (branchial cavity, mouth and rectum). Throughout the invasion phase, the larvae were observed in all the tissues and organs with the exception of the genital gland. The spatial distribution of parasites in the snail revealed that the migration towards the visceral organs such as the kidney, heart and sinuses (which are the most usual microhabitats of the mother sporocysts of S. japonicum) appeared to take place via the circulatory system. Using natural openings as routes for penetration probably provides a selective advantage in a host-parasite system in which the target mollusc is amphibious: we presume that the miracidia inside these natural openings are protected against desiccation when the snail leaves the water, and that they can subsequently invade the tissues.


Assuntos
Schistosoma japonicum/fisiologia , Caramujos/parasitologia , Animais , Feminino , Larva/crescimento & desenvolvimento , Larva/fisiologia , Masculino , Schistosoma japonicum/crescimento & desenvolvimento
11.
Pediatr Dermatol ; 8(2): 137-9, 1991 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-1656415

RESUMO

We studied a case of infantile digital fibromatosis (IDF) by transmission electron microscopy. We could not detect either human papillomavirus (HPV) DNA types 6, 11, 16, and 18, or herpes simplex virus (HSV) DNA types 1 and 2 in IDF. Our results suggest that IDF is not associated with HPV and HSV infection.


Assuntos
DNA Viral/análise , Fibroma/microbiologia , Papillomaviridae/isolamento & purificação , Simplexvirus/isolamento & purificação , Neoplasias Cutâneas/microbiologia , Dedos do Pé , Fibroma/patologia , Humanos , Lactente , Masculino , Papillomaviridae/genética , Simplexvirus/genética , Neoplasias Cutâneas/patologia , Infecções Tumorais por Vírus/microbiologia , Infecções Tumorais por Vírus/patologia
12.
C R Acad Sci III ; 312(5): 209-13, 1991.
Artigo em Francês | MEDLINE | ID: mdl-1904296

RESUMO

The participation of replicating sporocysts in the intramolluscal development of Schistosoma japonicum within its snail host Oncomelania hupensis is demonstrated by histological studies. Replicating sporocysts were observed in snails maintained under both standard and hibernation conditions. The demographic and epidemiological importance of the replication process within schistosomes is discussed comparatively.


Assuntos
Replicação do DNA , Moluscos/parasitologia , Schistosoma japonicum/genética , Animais , Schistosoma japonicum/citologia , Esporos/genética
13.
Pediatr Dermatol ; 7(4): 270-4, 1990 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-2080120

RESUMO

Hair casts were seen in 22 girls ranging in age from 4 to 13 years. They were localized to the frontal, vertex, and temporal areas. The number of affected hairs varied from one-tenth to one-third. Twenty of the 22 girls styled their hair in ponytails or pigtails. Compound root sheath casts were present in six of nine patients using 1% 4-dimethylaminocinamaldehyde stain. A mass of large polymorphous scales and solitary or clumped spores was seen on the surface of hair casts using scanning and transmission electron microscopy. Energy-dispersive x-ray microanalysis showed that elements of silicon, aluminum, and molybdenum were uniquely present in hair casts. We assume that tightly drawn braids, by causing local circulatory disturbances and inflammation of the scalp, may be one etiologic factor in the disorder.


Assuntos
Doenças do Cabelo/patologia , Cabelo/ultraestrutura , Adolescente , Criança , Pré-Escolar , Feminino , Cabelo/patologia , Humanos , Microscopia Eletrônica de Varredura , Dermatoses do Couro Cabeludo/patologia
16.
Int J Dermatol ; 26(10): 641-4, 1987 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-3429098

RESUMO

Microsporum nanum can afflict human hair, although pigs are the usual focus of infection. Although this dermatophyte was thought to invade hair as an endothrix, electron microscopic studies show it to cause ectothrix infection due to its keratinolytic activities.


Assuntos
Dermatomicoses/microbiologia , Cabelo/microbiologia , Microsporum/ultraestrutura , Dermatoses do Couro Cabeludo/microbiologia , Criança , China , Humanos , Microscopia Eletrônica de Varredura , Esporos/ultraestrutura
18.
Ann Parasitol Hum Comp ; 61(5): 553-8, 1986.
Artigo em Francês | MEDLINE | ID: mdl-3813433

RESUMO

The release of Schistosoma japonicum cercariae from the People's Republic of China shedded by Oncomelania hupensis was observed hourly under laboratory conditions: LD 9 - 15, T degrees = 25 degrees C. Daily periodicity of emergence was recognized during the light period. Peaks emergence occurs between 2 and 5 p.m. Results are compared with other geographical strains of S. japonicum.


Assuntos
Interações Hospedeiro-Parasita , Moluscos/parasitologia , Schistosoma japonicum/fisiologia , Animais , China , Periodicidade , Schistosoma japonicum/crescimento & desenvolvimento , Especificidade da Espécie
19.
Ann Parasitol Hum Comp ; 61(5): 559-64, 1986.
Artigo em Francês | MEDLINE | ID: mdl-3813434

RESUMO

The Schistosoma-Mollusc compatibility was tested in two Schistosoma japonicum-Oncomelania hupensis combinations originated from mainland China. The first combination is a combination maintained for more than 30 years in laboratory, the second consisted of a laboratory strain of S. japonicum and a strain of O. h. hupensis taken in the field (Jiangxi province). The fully absence of sporocyst throwing out and hemocyte infiltration 24 h. after transplantation suggest a perfect compatibility of the two combinations. Concerning the test carried out on a natural population of O. h. hupensis, the result obtained might reveal that the schistosomiasis transmission area from Jiangxi province represents focuses with high risk.


Assuntos
Interações Hospedeiro-Parasita , Moluscos/parasitologia , Schistosoma japonicum/fisiologia , Animais , China , Microcirurgia , Moluscos/crescimento & desenvolvimento , Schistosoma japonicum/crescimento & desenvolvimento , Especificidade da Espécie
20.
In. International Leprosy Congress, 12. International Leprosy Congress, 12/Proceedings. New Delhi, s.n, 1984. p.757-758.
Não convencional em Inglês | LILACS-Express | SES-SP, HANSEN, Hanseníase, SESSP-ILSLACERVO, SES-SP | ID: biblio-1246496
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA