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1.
Br J Nutr ; 126(2): 236-243, 2021 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-33046143

RESUMO

Hidden hunger is widespread in India. Individual dietary diversity score (IDDS) is a measure of the nutrient adequacy of the diet. The FAO has set guidelines for the measurement of dietary diversity: the IDDS and the minimum dietary diversity score for women (MDD-W) to assess nutritional deficiency, but validation against nutritional biomarkers is required. Using available data among rural youth (17 years) from the Pune Maternal Nutrition Study, the validity of DDS was assessed to measure deficiencies of vitamin B12, folate and Hb. Of the 355 boys and 305 girls, 19 % were classified as underweight, 57 % as vitamin B12 deficient (<150 pmol/l) and 22 % as anaemic (<120/130 g/l). Cereals, legumes and 'other-vegetables' were the most frequently consumed foods. More boys than girls consumed milk, flesh, eggs and micronutrient-dense foods. Median IDDS of 4 (interquartile range (IQR) 3-4) and MDD-W of 6 (IQR 5-7) were low. Youth with vitamin B12 deficiency had a higher likelihood of an IDDS ≤ 4 (1·89; 95 % CI 1·24, 2·87) or an MDD-W ≤ 5 (1·40; 95 % CI 1·02, 1·94). Youth with anaemia were more likely to have an IDDS ≤ 4 (1·76; 95 % CI 1·01, 3·14) adjusted for socio-economic scores, BMI, energy intake and sex. Folate deficiency was low (3 %) and was not associated with either score. Youth with lowest plasma vitamin B12 and Hb infrequently or never consumed dairy products/non-vegetarian foods. These rural Indian youth were underweight, had low DDS and consumed foods low in good-quality proteins and micronutrients. Associations of DDS with circulating micronutrients indicate that DDS is a valid measure to predict vitamin B12 deficiency and anaemia.


Assuntos
Anemia , Dieta , Micronutrientes/administração & dosagem , Deficiência de Vitamina B 12 , Adolescente , Anemia/epidemiologia , Biomarcadores/sangue , Feminino , Ácido Fólico/análise , Hemoglobinas/análise , Humanos , Índia , Masculino , Micronutrientes/sangue , Estado Nutricional , Magreza , Verduras , Vitamina B 12/análise , Deficiência de Vitamina B 12/epidemiologia , Vitaminas/análise
2.
Diabet Med ; 34(4): 563-568, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-27589695

RESUMO

AIMS: To investigate a virtual assistance-based lifestyle intervention to reduce risk factors for Type 2 diabetes in young employees in the information technology industry in India. METHODS: LIMIT (Lifestyle Modification in Information Technology) was a parallel-group, partially blinded, randomized controlled trial. Employees in the information technology industry with ≥3 risk factors (family history of cardiometabolic disease, overweight/obesity, high blood pressure, impaired fasting glucose, hypertriglyceridaemia, high LDL cholesterol and low HDL cholesterol) from two industries were randomized to a control or an intervention (1:1) group. After initial lifestyle advice, the intervention group additionally received reinforcement through mobile phone messages (three per week) and e-mails (two per week) for 1 year. The primary outcome was change in prevalence of overweight/obesity, analysed by intention to treat. RESULTS: Of 437 employees screened (mean age 36.2 ± 9.3 years; 74.8% men), 265 (61.0%) were eligible and randomized into control (n=132) or intervention (n=133) group. After 1 year, the prevalence of overweight/obesity reduced by 6.0% in the intervention group and increased by 6.8% in the control group (risk difference 11.2%; 95% CI 1.2-21.1; P=0.042). There were also significant improvements in lifestyle measurements, waist circumference, and total and LDL cholesterol in the intervention group. The number-needed-to-treat to prevent one case of overweight/obesity in 1 year was 9 (95% CI 5-82), with an incremental cost of INR10665 (£112.30) per case treated/prevented. A total of 98% of participants found the intervention acceptable. CONCLUSIONS: A virtual assistance-based lifestyle intervention was effective, cost-effective and acceptable in reducing risk factors for diabetes in young employees in the information technology industry, and is potentially scalable.


Assuntos
Diabetes Mellitus Tipo 2/prevenção & controle , Tecnologia da Informação , Obesidade/terapia , Adulto , Telefone Celular , HDL-Colesterol/metabolismo , LDL-Colesterol/metabolismo , Diabetes Mellitus Tipo 2/epidemiologia , Dislipidemias/epidemiologia , Dislipidemias/metabolismo , Correio Eletrônico , Feminino , Intolerância à Glucose/epidemiologia , Humanos , Hipertensão/epidemiologia , Hipertrigliceridemia/epidemiologia , Índia/epidemiologia , Masculino , Obesidade/epidemiologia , Saúde Ocupacional , Sobrepeso/epidemiologia , Sobrepeso/terapia , Reforço Psicológico , Comportamento de Redução do Risco , Envio de Mensagens de Texto , Interface Usuário-Computador
3.
Stud Mycol ; 87: 207-256, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28966419

RESUMO

A concatenated dataset of LSU, SSU, ITS and tef1 DNA sequence data was analysed to investigate the taxonomic position and phylogenetic relationships of the genus Camarosporium in Pleosporineae (Dothideomycetes). Newly generated sequences from camarosporium-like taxa collected from Europe (Italy) and Russia form a well-supported monophyletic clade within Pleosporineae. A new genus Camarosporidiella and a new family Camarosporidiellaceae are established to accommodate these taxa. Four new species, Neocamarosporium korfii, N. lamiacearum, N. salicorniicola and N. salsolae, constitute a strongly supported clade with several known taxa for which the new family, Neocamarosporiaceae, is introduced. The genus Staurosphaeria based on S. lycii is resurrected and epitypified, and shown to accommodate the recently introduced genus Hazslinszkyomyces in Coniothyriaceae with significant statistical support. Camarosporium quaternatum, the type species of Camarosporium and Camarosporomyces flavigena cluster together in a monophyletic clade with significant statistical support and sister to the Leptosphaeriaceae. To better resolve interfamilial/intergeneric level relationships and improve taxonomic understanding within Pleosporineae, we validate Camarosporiaceae to accommodate Camarosporium and Camarosporomyces. The latter taxa along with other species are described in this study.

4.
Fungal Divers ; 69(1): 1-55, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27284275

RESUMO

Article 59.1, of the International Code of Nomenclature for Algae, Fungi, and Plants (ICN; Melbourne Code), which addresses the nomenclature of pleomorphic fungi, became effective from 30 July 2011. Since that date, each fungal species can have one nomenclaturally correct name in a particular classification. All other previously used names for this species will be considered as synonyms. The older generic epithet takes priority over the younger name. Any widely used younger names proposed for use, must comply with Art. 57.2 and their usage should be approved by the Nomenclature Committee for Fungi (NCF). In this paper, we list all genera currently accepted by us in Dothideomycetes (belonging to 23 orders and 110 families), including pleomorphic and nonpleomorphic genera. In the case of pleomorphic genera, we follow the rulings of the current ICN and propose single generic names for future usage. The taxonomic placements of 1261 genera are listed as an outline. Protected names and suppressed names for 34 pleomorphic genera are listed separately. Notes and justifications are provided for possible proposed names after the list of genera. Notes are also provided on recent advances in our understanding of asexual and sexual morph linkages in Dothideomycetes. A phylogenetic tree based on four gene analyses supported 23 orders and 75 families, while 35 families still lack molecular data.

5.
Environ Pollut ; 344: 123430, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38281571

RESUMO

Due to the rapid growth of global population, new, fast and reliable methods must be developed to purify contaminated water. Various photocatalysts have been developed to remove organic dyes from water. Herein, Ag doped BaTiO3 has been synthesized using a facile solvothermal method and its excellent photocatalytic activities were demonstrated in degradation of both anionic and cationic dyes under visible light illumination. Ag doped BaTiO3 nanoparticles showed greater efficacy in the degradation of methylene blue (MB) and eosin yellow (EY) than undoped BaTiO3 nanoparticles, which makes them a better candidate for photocatalysis. 1.0 AgBT sample showed the highest photocatalytic activity for MB (99.1 % in 100 min) and EY (99.3 % in 60 min) dye degradation compared with those of other samples. Further, the trapping experiments revealed that hydroxyl radicals and holes are the active species in the photocatalytic process of MB and EY dye degradation and recycle test showed excellent stability of the synthesized material.


Assuntos
Nanopartículas , Prata , Bário , Corantes , Fotólise , Luz , Água , Catálise
6.
Acta Neurochir (Wien) ; 155(1): 131-4; discussion 134, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23132375

RESUMO

We report a rare case of anterior cerebral artery (ACA) thrombosis following transsphenoidal surgery in a case of growth hormone secreting pituitary macroadenoma. During the surgery, there was arachnoid breach with cerebrospinal fluid (CSF) leak. Post operatively, she became blind in both eyes for which re-exploration was done. A computed tomographic (CT) scan 16 hours after surgery showed a large tumor bed haematoma which was explored transcranially. During surgery, the right A1 was thrombosed while the ICA and middle cerebral artery (MCA) were patent as confirmed by post-operative magnetic resonance imaging (MRI). However, she died on the second post-operative day. ACA thrombosis following transsphenoidal surgery has not been reported before. A review of literature and possible mechanism of this complication has been discussed.


Assuntos
Adenoma/cirurgia , Artéria Cerebral Anterior , Adenoma Hipofisário Secretor de Hormônio do Crescimento/cirurgia , Trombose Intracraniana/etiologia , Complicações Pós-Operatórias , Seio Esfenoidal/cirurgia , Adenoma/complicações , Adenoma/patologia , Vazamento de Líquido Cefalorraquidiano , Rinorreia de Líquido Cefalorraquidiano/etiologia , Evolução Fatal , Feminino , Adenoma Hipofisário Secretor de Hormônio do Crescimento/complicações , Adenoma Hipofisário Secretor de Hormônio do Crescimento/patologia , Humanos , Trombose Intracraniana/diagnóstico , Trombose Intracraniana/terapia , Adulto Jovem
7.
Nat Genet ; 11(2): 126-9, 1995 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-7550338

RESUMO

Early events in neuronal differentiation are generally considered to be regulated by factors independent of alterations in membrane permeability. Weaver mice harbour a mutation that blocks neuronal differentiation just after cessation of cell division, prior to cell migration and synaptogenesis. Cerebellar granule cells in homozygous weaver mice fail to differentiate, either because intrinsic cues are absent or because the granule cells are unable to respond to those cues. We now report that weaver mice have a missense mutation in a gene encoding a G-protein coupled inward rectifier potassium channel. The mutation alters the putative ion-permeable, pore-forming domain of the protein, suggesting that granule cell differentiation is regulated by changes in membrane permeability.


Assuntos
Diferenciação Celular/genética , Cerebelo/citologia , Mapeamento Cromossômico , Proteínas de Ligação ao GTP/fisiologia , Neurônios/fisiologia , Mutação Puntual , Canais de Potássio Corretores do Fluxo de Internalização , Canais de Potássio/genética , Canais de Potássio/fisiologia , Sequência de Aminoácidos , Animais , Sequência de Bases , Cerebelo/fisiologia , Cromossomos Humanos Par 21 , Cruzamentos Genéticos , Primers do DNA , Canais de Potássio Corretores do Fluxo de Internalização Acoplados a Proteínas G , Expressão Gênica , Homozigoto , Humanos , Meiose , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Mutantes Neurológicos , Dados de Sequência Molecular , Muridae , Neurônios/citologia , Reação em Cadeia da Polimerase , Polimorfismo Genético , Canais de Potássio/química , Estrutura Secundária de Proteína , Deleção de Sequência , Homologia de Sequência de Aminoácidos
8.
Nanoscale Adv ; 3(18): 5301-5311, 2021 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-36132633

RESUMO

CaTiO3 has attracted enormous interest in the fields of photocatalytic dye degradation and water splitting owing to its low cost, excellent physicochemical stability and structural tunability. Herein, we have developed a simple one pot solvothermal approach which directs V into the Ti sites in the isovalent state during the synthesis of V doped CaTiO3 cuboids. The prediction of reduction in the band gap due to the formation of additional levels just beneath the conduction band edge by the first principles density functional electronic structure study is confirmed by the experimental results. The suppression of charge carrier recombination in 1.0 V leads to the highest photocatalytic activity in the degradation of methylene blue. The percentage degradation of 94.2 indicates its suitability as an excellent catalyst for photocatalytic water treatment.

9.
J Neurooncol ; 96(2): 287-90, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19575150

RESUMO

Chordomas constitute about 1% of intracranial tumors. They are generally extradural destroying the bone. Intradural chordomas are very rare. We present one such case of a clival intradural chordoma who presented with a left trigeminal nerve sensory neuropathy. The lesion was totally excised uneventfully via a retromastoid suboccipital approach. There was no recurrence of the lesion at 1-year follow-up. Characteristics of intradural chordoma and its close differential ecchordosis physaliphora are reviewed in this article.


Assuntos
Neoplasias do Tronco Encefálico/patologia , Cordoma/patologia , Dura-Máter/patologia , Adulto , Cordoma/metabolismo , Dura-Máter/metabolismo , Humanos , Queratinas/metabolismo , Antígeno Ki-67/metabolismo , Imageamento por Ressonância Magnética/métodos , Masculino , Proteínas S100/metabolismo , Tomógrafos Computadorizados
10.
Nanoscale Adv ; 2(9): 4229-4241, 2020 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-36132772

RESUMO

It is well agreed that supercapacitors form an important class of energy storage devices catering to a variety of needs. However, designing the same using eco-friendly and earth abundant materials with high performance is still the dire need of the day. Here, we report a facile solvothermal synthesis of a porous graphene-NiFe2O4 (PGNF) nanocomposite. Thorough elemental, diffraction, microscopic and spectroscopic studies confirmed the formation of the PGNF composite, in which the NF nanoparticles are covered over the PG surface. The obtained 10 PGNF composite showed a surface area of 107 m2 g-1, with large pore volume which is favorable for charge storage properties. When utilizing the material as an electrode for a supercapacitor in a 2 M KOH aqueous electrolyte, the electrode displayed an impressive specific capacitance value of 1465.0 F g-1 at a scan rate of 5 mV s-1 along with a high capacitance retention of 94% after 10 000 discharge cycles. The fabricated symmetrical supercapacitor device exhibited an energy density of 4.0 W h kg-1 and a power density of 3600.0 W kg-1 at a high applied current density of 14 A g-1. The superior electrochemical performance is attributed to the synergetic effect of the composite components which not only provided enough electroactive channels for the smooth passage of electrolyte ions but also maintained the hybrid structure intact in the ongoing electrochemical process. The obtained results underpin the promising utility of this material for future electrochemical energy storage devices.

11.
Nanoscale Adv ; 2(12): 5688-5698, 2020 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-36133860

RESUMO

Environmentally friendly BaTiO3 is emerging as a potential photocatalyst due to its tunable electronic structure. Although originally believed to be a poor photocatalyst due to its wide band gap, several strategies have been implemented to reduce its band gap. One such approach is doping, but this often leads to the formation of mid gap recombination centers and diminishes the efficiency of the material. In the present work, we study for the first time the effect of site occupancy of Rh on the electronic structure of BaTiO3. As the theoretical results reveal that if Rh occupies both Ba and Ti sites simultaneously it leads to the formation of mid gap states, an experimental approach is implemented to reduce the band gap of BaTiO3 while simultaneously avoiding the formation of recombination centers. The facile one pot hydrothermal approach reported here directs the Rh towards Ba sites leading to a decrease in the band gap due to the appearance of donor Rh3+ states, suppressing the formation of Rh4+ states. A promising photocatalytic activity of 96% degradation of methylene blue dye in 120 minutes was observed for the 0.5 Rh sample indicating the high efficiency of the material.

12.
J Nanosci Nanotechnol ; 20(2): 1118-1129, 2020 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-31383112

RESUMO

MoS2/TiO2 heterostructure with enhanced photocatalytic activity was successfully synthesized by hydrothermal method. The segmentation of flower-like MoS2 structure resulted, during the hydrothermal condition in the presence of spherical nanoporous TiO2 as a growing matrix. A pool of larger spherical TiO2 particle induces a strain effect, which restricted the size of MoS2. Meanwhile, the applied hydrothermal pressure leads the segmentation of the bundle-like structure of MoS2 to individual layer. The obtained heterostructure was characterized by X-ray diffraction, Scanning, and Transmission electron microscopy, X-ray photoelectron spectroscopy, DRS-UV Visible spectra, Photoluminescence, Raman spectroscopy and BET surface area analysis. The photocatalytic activity of these synthesized materials was evaluated for the decomposition of methylene blue (MB) under visible light. The results indicated that MoS2/TiO2 heterostructure had higher photocatalytic activity than pristine MoS2 and TiO2 materials. After irradiation, the photocatalytic efficiency towards MB degradation was calculated as 67.4, 80.2 and 99.5% for MoS2, TiO2, and MoS2/TiO2, respectively. The formation of unique, distinct layers of MoS2 over TiO2 surface created more active sites for a photocatalytic response. These whole phenomena could enhance the absorption characteristics of dyestuff on the heterostructure and enhance the charge transport after conjugation, which improves MB degradation efficiency.

13.
Front Microbiol ; 11: 1606, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32793142

RESUMO

During a study of diversity and taxonomy of lignicolous freshwater fungi in China, nine species of Acrogenospora were collected. Seven of these were new species and they are described and illustrated. With morphology, additional evidence to support establishment of new species is provided by phylogeny derived from DNA sequence analyses of a combined LSU, SSU, TEF1α, and RPB2 sequence dataset. Acrogenospora subprolata and A. verrucispora were re-collected and sequenced for the first time. The genus Acrogenospora is far more species rich than originally thought, with nine species found in a small area of Yunnan Province, China.

14.
Front Microbiol ; 11: 456, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32300334

RESUMO

During our ongoing surveys of fungi on submerged wood in the Greater Mekong Subregion, we collected two new species similar to Bactrodesmium longisporum. Pseudobactrodesmium gen. nov. is introduced to accommodate the new species, P. aquaticum, P. chiangmaiensis and B. longisporum is transferred to this genus. Fasciculate conidiophores, enteroblastic conidiogenous cells and subulate to fusiform, phragmoseptate conidia with a tapering apical cell and sheath characterize the genus. Pseudobactrodesmium aquaticum has longer conidia than P. chiangmaiensis. The placement of Pseudobactrodesmium in Dactylosporaceae (Eurotiomycetes) is a novel finding based on analyses of combined LSU, SSU, ITS and RPB2 sequence data. Our study reveals that Pseudobactrodesmium is likely to be a speciose genus with different species in streams around the world.

15.
Diabetologia ; 52(11): 2350-8, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19707742

RESUMO

AIMS/HYPOTHESIS: This study was designed to test the hypothesis that low plasma vitamin B(12) concentrations combined with high folate concentrations in pregnancy are associated with a higher incidence of gestational diabetes (GDM) and later diabetes. METHODS: Women (N = 785) attending the antenatal clinics of one hospital in Mysore, India, had their anthropometry, insulin resistance (homeostasis model assessment-2) and glucose tolerance assessed at 30 weeks' gestation (100 g oral glucose tolerance test; Carpenter-Coustan criteria) and at 5 years after delivery (75 g OGTT; WHO, 1999). Gestational vitamin B(12) and folate concentrations were measured in stored plasma samples. RESULTS: Low vitamin B(12) concentrations (<150 pmol/l, B(12) deficiency) were observed in 43% of women and low folate concentrations (<7 nmol/l) in 4%. B(12)-deficient women had higher body mass index (p < 0.001), sum of skinfold thickness (p < 0.001), insulin resistance (p = 0.02) and a higher incidence of GDM (8.7% vs 4.6%; OR 2.1, p = 0.02; p = 0.1 after adjusting for BMI) than non-deficient women. Among B(12)-deficient women, the incidence of GDM increased with folate concentration (5.4%, 10.5%, 10.9% from lowest to highest tertile, p = 0.04; p for interaction = 0.2). Vitamin B(12) deficiency during pregnancy was positively associated with skinfold thickness, insulin resistance (p < 0.05) and diabetes prevalence at 5 year follow-up (p = 0.009; p = 0.008 after adjusting for BMI). The association with diabetes became non-significant after excluding women with previous GDM (p = 0.06). CONCLUSIONS/INTERPRETATION: Maternal vitamin B(12) deficiency is associated with increased adiposity and, in turn, with insulin resistance and GDM. Vitamin B(12) deficiency may be an important factor underlying the high risk of 'diabesity' in south Asian Indians.


Assuntos
Diabetes Mellitus/epidemiologia , Diabetes Gestacional/epidemiologia , Vitamina B 12/sangue , Adulto , Índice de Massa Corporal , Feminino , Ácido Fólico/sangue , Teste de Tolerância a Glucose , Humanos , Lactente , Mortalidade Infantil , Recém-Nascido , Resistência à Insulina , Gravidez , Complicações na Gravidez/sangue , Resultado da Gravidez , Fatores Socioeconômicos , Deficiência de Vitamina B 12/sangue , Deficiência de Vitamina B 12/complicações , Adulto Jovem
16.
Science ; 272(5270): 1950-3, 1996 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-8658170

RESUMO

Homozygous weaver mice are profoundly ataxic because of the loss of granule cell neurons during cerebellar development. This granule cell loss appears to be caused by a genetic defect in the pore region (Gly156-->Ser) of the heterotrimeric guanine nucleotide-binding protein (G protein)-gated inwardly rectifying potassium (K+) channel subunit (GIRK2). A related subunit, GIRK1, associates with GIRK2 to constitute a neuronal G protein-gated inward rectifier K+ channel. The weaver allele of the GIRK2 subunit (wvGIRK2) caused loss of K+ selectivity when expressed either as wvGIRK2 homomultimers or as GIRK1-wvGIRK2 heteromultimers. The mutation also let to loss of sensitivity to G protein betagamma dimers. Expression of wvGIRK2 subunits let to increased cell death, presumably as a result of basal nonselective channel opening.


Assuntos
Cerebelo/metabolismo , Proteínas de Ligação ao GTP/fisiologia , Canais de Potássio Corretores do Fluxo de Internalização , Canais de Potássio/metabolismo , Sequência de Aminoácidos , Animais , Elementos Antissenso (Genética) , Células CHO , Morte Celular , Linhagem Celular , Cerebelo/citologia , Cricetinae , Canais de Potássio Corretores do Fluxo de Internalização Acoplados a Proteínas G , Potenciais da Membrana , Camundongos , Camundongos Mutantes Neurológicos , Dados de Sequência Molecular , Neurônios/citologia , Neurônios/metabolismo , Oócitos/citologia , Técnicas de Patch-Clamp , Mutação Puntual , Canais de Potássio/genética , Transfecção
17.
J Neurooncol ; 95(1): 71-80, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19404583

RESUMO

Papillary glioneuronal tumors are newly recognized seizure producing tumors. We report two such cases with immunohistochemical characterization of glial and neuronal components and briefly review literature. Co-localization of glial and neuronal markers was demonstrable on confocal microscopy with expression of stem cell markers (Nestin and CD133) suggesting possible origin from neuroepithelial stem cell with biphenotypic differentiation.


Assuntos
Neoplasias Encefálicas/patologia , Carcinoma Papilar/patologia , Células-Tronco Neoplásicas/patologia , Neuroglia/patologia , Neurônios/patologia , Antígeno AC133 , Adulto , Antígenos CD/metabolismo , Glicoproteínas/metabolismo , Humanos , Masculino , Meningioma , Pessoa de Meia-Idade , Proteínas do Tecido Nervoso/metabolismo , Peptídeos/metabolismo
18.
Clin Neuropathol ; 28(5): 379-83, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19788054

RESUMO

Gliosarcoma is an uncommon variant of glioblastoma characterized by a biphasic pattern of glial and mesenchymal differentiation in the tumor. These tumors occur mostly in the cerebral hemispheres. Intraventricular location is extremely rare. Extensive review of literature revealed only two cases of intraventricular gliosarcoma. The first case arose by malignant transformation of a preexisting ependymoma. The second case was a gliosarcoma involving the frontal lobe with extension into the lateral ventricle. We report a case of an exclusively lateral ventricular tumor probably arising from the interventricular septum and blocking the CSF pathway. To the best of our knowledge, this is the first reported case of an exclusively intraventricular gliosarcoma.


Assuntos
Neoplasias do Ventrículo Cerebral/patologia , Neoplasias do Ventrículo Cerebral/cirurgia , Gliossarcoma/patologia , Gliossarcoma/cirurgia , Encéfalo/diagnóstico por imagem , Encéfalo/patologia , Encéfalo/cirurgia , Neoplasias do Ventrículo Cerebral/diagnóstico , Evolução Fatal , Feminino , Gliossarcoma/diagnóstico , Humanos , Pessoa de Meia-Idade , Prognóstico , Tomografia Computadorizada por Raios X
20.
MycoKeys ; 58: 1-26, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31534413

RESUMO

Shiraiaceae is an important family in Pleosporales (Dothideomycetes), which includes medical fungi and plant pathogens. Two hypocrellin-producing taxa, Shiraia bambusicola and a novel genus Rubroshiraia gen. nov., typified by Rubroshiraia bambusae are treated in this article. Maximum likelihood analysis, generated via RAxML (GTR+G model), using a combined SSU, LSU, TEF1 and RPB2 sequence dataset, shows that Rubroshiraia is close to Shiraia and belongs to the family Shiraiaceae. Descriptions, illustrations and a taxonomic key are provided for the genera in Shiraiaceae. Rubroshiraia morphologically differs from Shiraia in having small and dark ascostromata and filiform ascospores. Production of the ascostromatal metabolites, hypocrellin A and B, were examined by HPLC and spectrophotometer. The content of hypocrellin A and B of specimen HKAS 102255 (R. bambusae) is twice that produced by HKAS 102253 (S. bambusicola). To clarify the relationship between R. bambusae and Hypocrella bambusae, type material of the latter was examined and provided the illustration.

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