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81.
Silvéria Regina de S. Lira Vietla Satyanarayana Rao Ana Carla S. Carvalho Marjorie M. Guedes Talita C. de Morais Antonia L. de Souza Maria Teresa S. Trevisan Alana F. Lima Mariana H. Chaves Flávia A. Santos 《Inflammopharmacology》2009,17(4):221-228
The effect of lupeol, a natural pentacyclic triterpene on ethanol-induced gastric damage in mice was evaluated. The gastroprotection
was assessed by determination of changes in mean gastric lesion area, quantification of mucosal non-protein sulfhydryls (NP-SH),
and characterized using drugs that influence the endogenous prostaglandins, α2-adrenoceptors, nitric oxide, KATP-channels, and intracellular calcium. Orally administered lupeol (3, 10, and 30 mg/kg) significantly and dose-dependently
attenuated the ethanol-induced gastric damage by 39–69%, whereas the positive control N-acetylcysteine (NAC, 300 mg/kg, i.p.) afforded 32% protection. Both lupeol and NAC restored the NP-SH depleted by ethanol
but the lupeol effect was only marginal. Lupeol gastroprotection was attenuated by indomethacin and L-NAME, the respective
COX and NO-synthase inhibitors and was weakly sensitive to α2-adrenergic antagonist yohimbine and KATP-channel blocker glibenclamide, but more profoundly to calcium blocker verapamil. These pharmacological effects of lupeol
may synergistically contribute to alleviating the ethanol-associated gastric damage, which is multifactorial. 相似文献
82.
Dixit MP Nguyen C Carson T Guedes B Dixit NM Bell JM Wang Y 《Pediatric nephrology (Berlin, Germany)》2008,23(1):145-148
Acute tubulo-interstitial nephritis (ATIN) is an important cause of acute renal failure resulting from a variety of insults,
including immune complex-mediated tubulo-interstitial injury, but drugs such as non-steroidal anti-inflammatory drugs (NSAIDs)
are a far more frequent cause. Overall, as an entity, ATIN remains under-diagnosed, as symptoms resolve spontaneously if the
medication is stopped. We report on a 14-year-old boy who developed acute renal failure 2 weeks after aortic valve surgery.
He was put on aspirin following surgery and took ibuprofen for fever for nearly a week prior to presentation. He then presented
to the emergency department feeling quite ill and was found to have a blood urea nitrogen (BUN) concentration of of 147 mg/dl,
creatinine of 15.3 mg/dl and serum potassium of 8.7 mEq/l. Dialysis was immediately initiated. A kidney biopsy showed inflammatory
infiltrate consistent with ATIN. However, in the tubular basement membrane (TBM), very intense granular deposits of polyclonal
IgG and C3 were noted. He needed dialysis for 2 weeks and was treated successfully with steroids for 6 months. His renal recovery
and disappearance of proteinuria took a year. In conclusion, this is a first report of NSAIDs-associated ATIN, showing deposits
of granular immune complex present only in the TBM and not in the glomeruli. 相似文献
83.
BACKGROUND: Bariatric surgery for morbid obesity achieves an accentuated weight loss, with skin and soft tissue redundancy in some corporal segments, including the thighs. The thigh lift is a plastic surgery that improves this redundant tissue in the medial thigh area, but this surgical procedure may have complications, such as inferior migration of the scar, delayed wound healing, vulvar distortion, and lymphatic system alterations. METHODS: To evaluate the effect of the thighplasty on the lymphatic system, 14 patients were prospectively included in this study. Lymphoscintigraphy was performed before thighplasty, and this result was compared to the new examination performed 6 months after thighplasty. The exclusion standards include patients with clinical alterations and abnormal lymphoscintigraphy in previous surgery. RESULTS: The statistical analysis was performed on 26 inferior members, according to exclusion standards. All the members had normal lymphoscintigraphy in the preoperative period. After thighplasty, eight members (30.8%) demonstrated abnormal lymphoscintigraphy (p = 0.008) resulting in significant functional and anatomic alterations in the lymphatic system. CONCLUSION: The thigh lift changes lymphatic drainage in lower extremities according to lymphoscintigraphy analyses. 相似文献
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86.
C. Désidéri-Vaillant Y. RoubyJ. Guedes C. KerdonkufE. Valero I. DrouillardH. Corbé P. Le Guen. 《Pathologie-biologie》2009
We have detected 410 microcytosis among biological tests of military people. These microcytosis are principally coumpounded by haemoglobin's abnormalities (minor thalassemia, sickle cell diseases, E haemoglobin cases and cases of C haemoglobin) and cases of iron deficiency, usually among women. 相似文献
87.
Kathia Monielly Tenorio Nunes Alberto Eduardo Cox Cardoso Fabio de Souza Guedes Pereira Luiz Henrique Carvalho Batista Ricardo Luiz Simoes Houly 《Anais brasileiros de dermatologia》2013,88(6):969-972
Schistosomiasis mansoni is a systemic disease caused by a helminth of the schistosoma
genus. The disease is generally asymptomatic or gastrointestinal symptoms may
predominate. Skin lesions related to the disease are rarely diagnosed, even in
endemic areas. The authors report the case of a young girl diagnosed with cutaneous
schistosomiasis with involvement of the abdomen, back and scapular region.
Schistosoma eggs were found in the lesions by histopathologic exam. There was no
evidence of systemic involvement. Schistosomiasis must be included in the list of
differential diagnosis of skin damage, especially in endemic areas, due to the
potential consequences, in case of late diagnosis and treatment. 相似文献
88.
Ana Paula Rocha-de-Melo Cristovam Wanderley Picanço-Diniz Juliana Maria Carrazzone Borba Jailma Santos-Monteiro Rubem Carlos Araújo Guedes 《Nutritional neuroscience》2013,16(4):207-216
AbstractTissue distribution of nitric oxide-synthases was investigated in the rat hippocampus and visual cortex under nutritional changes induced by modification of the litter size. Young (30-45-days-old) rats, suckled in litters formed by 3, 6 or 12 pups (called small, medium and large litters, respectively), were studied by using nicotine-adenine-dinucleotide phosphate-diaphorase histochemistry (shortly, diaphorase), a simple and robust procedure to characterize tissue distribution of nitric oxide-synthases. We assessed morphometric features of the diaphorase-positive cells in visual cortex, and the neuropil histochemical activity in hippocampal CA1 and dentate gyrus using densitometry analysis. In the large-litter group, the labeled-cell density in white matter of area 17 was higher, as compared to the small-litter group. There was a clear trend, in the large-litter group, to lower values of soma area, dendritic field and branches per neuron, but the differences were not significant. Densitometry analysis of hippocampus revealed a significant increase in the relative neuropil histochemical activity of the dentate gyrus molecular layer in the larger litters, which may be associated to increased compensatory blood flow in the hippocampus. The pathophysiological mechanisms of the observed changes remain to be investigated. 相似文献
89.
Herbert Leonel de Matos Guedes Roberta Olmo Pinheiro Suzana Passos Chaves Salvatore Giovanni De-Simone Bartira Rossi-Bergmann 《Vaccine》2010
We previously demonstrated that intradermal and intramuscular vaccination with Leishmania amazonensis promastigote antigens (LaAg) increases the susceptibility of BALB/c mice to cutaneous leishmaniasis. In this study, we investigated the role played by serine and cysteine proteases as disease-promoting components of LaAg. Mice were immunized by the intramuscular route with LaAg that was pre-treated with a pool of serine or cysteine protease inhibitors (SPi and CPi, respectively) prior to infection with L. amazonensis. Neutralization of either enzyme type reversed the disease-promoting effect of LaAg, as seen by the slower lesion development. However, the parasite burden was only effectively controlled in mice receiving SPi-treated LaAg. Protection was associated with diminished production of TGF-β and particularly IL-10 in response to parasite antigens by the lesion-draining lymph node cells of vaccinated mice relative to control. In vitro, soluble proteases isolated from LaAg (LaSP-Sol) directly activated IL-4, IL-10 and TGF-β production by immune cells. Like native LaAg, vaccination with LaSP-Sol primed mice to respond to parasite challenge with a strong Jones-Mote cutaneous hypersensitivity reaction, and increased susceptibility to infection. Furthermore, neutralization of serine but not cysteine proteases blocked the capacity of LaAg to sensitize mice for Jones-Mote reaction. Together, these results indicate that soluble serine proteases are key components of LaAg responsible for its disease-promoting immunity. 相似文献
90.
Pinheiro RO Pinto EF de Matos Guedes HL Filho OA de Mattos KA Saraiva EM de Mendonça SC Rossi-Bergmann B 《Vaccine》2007,25(14):2716-2722
We previously showed the opposing effect of systemic and mucosal vaccination with whole Leishmania amazonensis antigen (LaAg). Here, the role played by lipophosphoglycan (LPG) as the key disease-promoting component of intramuscular (i.m.) LaAg and its usefulness as a defined intranasal vaccine was investigated in murine cutaneous leishmaniasis. BALB/c mice were twice vaccinated by the i.m. route with 25mug of intact LaAg or with LaAg that was pretreated with anti-LPG 3A1-La monoclonal antibody, prior to infection with L. amazonensis. LPG neutralization rendered the otherwise disease-promoting LaAg antigen protective, as observed by the smaller lesion sizes and reduced parasite burden. The increased resistance was accompanied by a markedly lower antigen-driven TGF-beta and IL-10 responses in the lesion-draining lymph nodes, concomitant with significantly higher IFN-gamma production. To test for intranasal efficacy, 10 microg of affinity-purified LPG and its parental LaAg were twice instilled in the nostrils prior to L. amazonensis infection. In both cases, similarly slower lesion growth and lower parasite burden were found that was associated with increased IFN-gamma and IL-10 responses in the lesion-draining lymph nodes. These results support a role for LPG in the dual route-related effect of LaAg and shows its strong potential as a defined needle-free and adjuvant-free vaccine for cutaneous leishmaniasis. 相似文献