Multiple malformations in a newborn goat          下载免费PDF全文

Gutierrez C  Rodriguez JL  Castellano E  Palomino E  Corbera JA  Montoya JA 《The Canadian veterinary journal. La revue veterinaire canadienne》2000,41(7):568-569

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True hermaphroditism in a horned goat with 60XX/60XY chimerism          下载免费PDF全文

Batista M  González F  Cabrera F  Palomino E  Castellano E  Calero P  Gracia A 《The Canadian veterinary journal. La revue veterinaire canadienne》2000,41(7):562-564

Anatomical, behavioral, histological, endocrinological, and cytogenetic characteristics were determined in a horned intersex goat. Histology of the gonads confirmed that the goat was a true hermaphrodite. Cytogenetic analysis showed that it was a chimera (60XX/60XY). Use of laparoscopy allowed determination of characteristics of the internal gonads.  相似文献   

Pisolithus tinctorius fails to improve plantation performance of inoculated conifers in southwestern Oregon     

Michael A. Castellano  James M. Trappe 《New Forests》1991,5(4):349-358

Bare-root stock of Douglas-fir, lodgepole pine, white fir, and grand fir, inoculated with Pisolithus tinctorius and handled by standard nursery, cold storage and planting practices performed no better than stock which was not intentionally inoculated but which had formed mycorrhizae with indigenous, nursery fungi on a variety of different outplanting sites in southwestern Oregon. Climate, planting sites and nursery practices in the Pacific Northwest differ drastically from those in the southeastern United States, where P. tinctorius has increased plantation survival and growth. Before P. tinctorius can be recommended for nursery inoculation in the Pacific Northwest, its reaction to each phase of the nursery and planting process needs to be carefully analyzed to determine where the problems lie.This article was written and prepared by US Government employees on official time, and is therefore in the public domain.  相似文献   

Characterization of mammalian selenoproteomes   总被引：3，自引：0，他引：3  

Kryukov GV  Castellano S  Novoselov SV  Lobanov AV  Zehtab O  Guigó R  Gladyshev VN 《Science (New York, N.Y.)》2003,300(5624):1439-1443

In the genetic code, UGA serves as a stop signal and a selenocysteine codon, but no computational methods for identifying its coding function are available. Consequently, most selenoprotein genes are misannotated. We identified selenoprotein genes in sequenced mammalian genomes by methods that rely on identification of selenocysteine insertion RNA structures, the coding potential of UGA codons, and the presence of cysteine-containing homologs. The human selenoproteome consists of 25 selenoproteins.  相似文献   

Sesquiterpene lactones with potential use as natural herbicide models. 2. guaianolides     

Macías FA  Galindo JC  Castellano D  Velasco RF 《Journal of agricultural and food chemistry》2000,48(11):5288-5296

A structure-activity study to evaluate the effect of 17 guaianolide sesquiterpene lactones (in a range of 100-0.001 microM) on the growth and germination of several mono- and dicotyledon target species is accomplished. Results are compared with those obtained in the same bioassay with an internal standard, the commercial herbicide Logran, to validate the results with a known active formulation and to compare the results with a commercial product to test their potential use as natural herbicide models. Specific conditions for the selective mono- or polyhydroxylation of guaianolides using the SeO(2)/tert-butyl hydroperoxide system are presented and discussed. The high regio- and stereoselectivities of the reaction are explained through the specific structural requirements of the bulky first adduct formed during the ene reaction. These compounds appear to have deeper effects on the growth of either monocots or dicots than the previously tested germacranolides. Otherwise, the lactone group seems to be necessary for the activity, though it does not necessarily need to be unsaturated. However, the presence of a second and easily accessible unsaturated carbonyl system greatly enhances the inhibitory activity. Lipophilicity and the stereochemistry of the possible anchoring sites are also crucial factors for the activity. Finally, the levels of growth inhibition obtained with some compounds on dicots or monocots are totally comparable to those of Logran and allow proposing them as lead compounds.  相似文献   

Fibrino-necrotic typhlitis caused by Escherichia fergusonii in ostriches (Struthio camelus)     

Herráez P  Rodríguez AF  Espinosa de los Monteros A  Acosta AB  Jaber JR  Castellano J  Castroa A 《Avian diseases》2005,49(1):167-169

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Sesquiterpene lactones with potential use as natural herbicide models (I): trans,trans-germacranolides.     

F A Macías  J C Galindo  D Castellano  R F Velasco 《Journal of agricultural and food chemistry》1999,47(10):4407-4414

A structure-activity study to evaluate the effect of the trans, trans-germacranolide sesquiterpene lactones costunolide, parthenolide, and their 1,10-epoxy and 11,13-dihydro derivatives (in a range of 100-0.001 microM) on the growth and germination of several mono and dicotyledon target species is accomplished. Results are compared with those obtained in the same bioassay with an internal standard, the commercial herbicide Logran, to validate the results with a known active formulation and to compare the results with a commercial product to test their potential use as natural herbicide models. These compounds appear to have a more selective effects on the radicle growth of monocotyledons. Certain factors such as the presence of nucleophile-acceptor groups and their accessibility enhance the inhibitory activity. The levels of radicle inhibition obtained with some compounds on wheat are totally comparable to those of Logran and allow to propose them as lead compounds.  相似文献   

Alterations in host DNA methylation in response to constitutive expression of Hop stunt viroid RNA in Nicotiana benthamiana plants          下载免费PDF全文

M. Castellano  G. Martinez  V. Pallás  G. Gómez 《Plant pathology》2015,64(5):1247-1257

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PREPUBIC AND TRANSRECTAL ULTRASONOGRAPHY OF THE CANINE PROSTATE: A COMPARATIVE STUDY     

Alberto Mosca  Zohil  DVM  M. Cecilia  Castellano  DVM 《Veterinary radiology & ultrasound》1995,36(5):393-396

A comparative study was conducted in ten dogs with signs of prostatic disease in order to evaluate the usefulness of the prepubic and transrectal ultrasonography for the examination of the prostate gland and for prostate biopsy guidance. Both techniques were adequate to identify the prostate gland and prostatic urethra. Transrectal ultrasound found 5 occurrencies of parenchymal echogenicity changes whereas the prepubic technique found only 2. Lesions in the cranial prostatic margin (two dogs) were detected only by prepubic ultrasound. Lesions of the caudal prostatic margin (six dogs), prostatic urethra disruption (two dogs) and prostatic capsule abnormalities (five dogs) were only recognized by the transrectal approach. Prepubic ultrasonography was useful for biopsy guidance of cranial prostatic lesions and transrectal ultrasonography was a good means for biopsy guidance of caudal lesions.  相似文献   

Primary pulmonary adenocarcinoma metastatic to the uvea, brain and adrenal gland in a dog     

Castellano MC  Massone AR  Idiart JR 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2006,53(4):194-197

A 10-year-old male Briard dog was presented because of listlessness, abnormal gait, fever, inappetence, and seizures. A non-pigmented growth was observed in the ventral quadrant of the left iris. Thoracic radiographs revealed multiple pulmonary metastases and the owner opted for killing. On necropsy, lung masses and nodules in left iris, right adrenal medulla, and brain were detected. Histologically the primary tumour was diagnosed as pulmonary adenocarcinoma with predominant solid pattern. Metastases to regional lymph nodes, uvea, adrenal medulla, and brain were recognized. The metastatic behaviour resembled that occurring in humans. To the authors' knowledge, this is the first report of a pulmonary adenocarcinoma with metastasis to the uvea in a dog.  相似文献