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Kang DY, Kim HC. Functional relation of agouti signaling proteins (ASIPs) to pigmentation and color change in the starry flounder, Platichthys stellatus. Comp Biochem Physiol A Mol Integr Physiol 2024; 291:111524. [PMID: 37981006 DOI: 10.1016/j.cbpa.2023.111524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/30/2023] [Accepted: 10/01/2023] [Indexed: 11/21/2023]
Abstract
We investigated the involvement of agouti-signaling proteins (ASIPs) in morphological pigmentation and physiological color change in flatfishes. We isolated ASIP1 and 2 mRNAs from the skin of starry flounder (Platichthys stellatus), and compared their amino acid (aa) structures to those of other animals. Then, we examined the mRNA expression levels of two ASIPs (Sf-ASIPs) in the pigmented ocular body and in the unpigmented blind body, as well as in the ordinary skin and in albino skin, in flatfishes. To investigate the role of Sf-ASIPs in physiological color change (color camouflage), we compared the expression of the two genes in two background colors (dark-green and white). Sf-ASIP1 cDNA had a 375-bp open reading frame (ORF) that encoded a protein consisting of 125 aa residues, and Sf-ASIP2 cDNA had a 402-bp ORF that encoded a protein consisting of 132 aa residues. RT-PCR revealed that the strongest Sf-ASIP1 and Sf-ASIP2 expression levels were observed in the eye and blind-skin, respectively. In Sf-ASIP1, the gene expression did not differ between the ocular-side skin and blind-side skin, nor between ordinary skin and abnormal skin of the fish. However, in Sf-ASIP2, the expression level was significantly higher in blind-side skin, compared to ocular-side skin, suggesting that the ASIP2 gene is related to the countershading body pigment pattern of the fish. In addition, the Sf-ASIP2 gene expression level was lower in the pigmented spot regions than in the unpigmented spot regions of the malpigmented pseudo-albino skins on the ocular side, implying that ASIP2 is responsible for the ocular-side pseudo-albino. Additionally, ASIP2 gene expression in the blind-side skin of ordinary fish was enhanced by a white tank, implying that a bright background color could inhibit hypermelanosis in the blind-side skin of cultured flounder by increasing the activity of the Sf-ASIP2 gene. However, we did not find any relationship of ASIPs with camouflage color changes. In conclusion, the ASIP2 gene is related to the morphological pigmentation (countershading and malpigmentation) of the skin in starry flounder, but not with physiological color changes (color camouflage) in the ocular-side skin.
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Affiliation(s)
- Duk-Young Kang
- National Institute of Fisheries Science, West Sea Fisheries Research Institute, 707 Eulwang-dong, Jung-gu, Incheon, Republic of Korea.
| | - Hyo-Chan Kim
- KMS & MC, Molecular research, Haneulbyeolbit-ro, YoungJong-1 dong, Joong-gu, Incheon, Republic of Korea
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Elshafie NO, Kmetiuk LB, Pellizzaro M, Haisi A, de O Conrado F, Weckerlin P, Ullmann LS, Junior JPA, Messick JB, Biondo AW, Dos Santos AP. Hemotropic Mycoplasmas (Hemoplasmas) in Free-Ranging Azara's Agoutis (Dasyprocta azarae) from an Urban Area of Southern Brazil. J Wildl Dis 2024; 60:513-518. [PMID: 38294758 DOI: 10.7589/jwd-d-23-00079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 11/24/2023] [Indexed: 02/01/2024]
Abstract
Hemotropic mycoplasmas (hemoplasmas) are opportunistic bacteria that attach to the erythrocyte surface, causing infectious anemia in several mammalian species, including rodents. Studies surveying native Azara's agoutis (Dasyprocta azarae) in Brazil are lacking. Accordingly, the present study aimed to assess hemoplasmas infection in free-ranging agoutis from an urban environmental conservation area in Curitiba, southern Brazil. Overall, 11/35 (31.43%) agoutis were positive to hemoplasmas by quantitative PCR (cycle threshold≤34.4). Sequencing of the 16S ribosomal RNA gene indicated Mycoplasma haemomuris infection, closely related to M. haemomuris subsp. ratti, suggesting hemoplasma transmission from urban rats to agoutis. Because the main route of M. haemomuris transmission has been direct rodent-to-rodent infection, the relatively lower positivity that we detected may be the result of low intraspecies contact due to the smaller social units of agoutis, generally consisting of two to four individuals, and low interspecies contact due to only sporadic agouti-rat interactions in urban settings, compared with other rodent species interactions. Further studies should be conducted to determine whether the hemoplasma infection that we found can cause clinical onset and life-threatening anemia in agoutis.
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Affiliation(s)
- Nelly O Elshafie
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, Indiana 47907, USA
| | - Louise B Kmetiuk
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, Indiana 47907, USA
| | - Maysa Pellizzaro
- Department of Veterinary Medicine, Federal University of Parana, 1540 Funcionarios Street, Curitiba, Paraná 80035-050, Brazil
- Institute of Collective Health (ICH), Federal University of Bahia (UFBA), Basílio da Gama Street, Salvador, Bahia 40110-040, Brazil
| | - Amanda Haisi
- Biotechnology Institute, São Paulo State University (UNESP), Rubiao Junior, Botucatu, São Paulo 18607-440, Brazil
| | - Francisco de O Conrado
- Department of Comparative Pathobiology, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, Massachusetts 01536, USA
| | - Patricia Weckerlin
- Natural History Museum of Capão da Imbuia, City Secretary of Environment, 407 Professor Benedito Conceição Street, Curitiba, Paraná 82810-080, Brazil
| | - Leila S Ullmann
- Biotechnology Institute, São Paulo State University (UNESP), Rubiao Junior, Botucatu, São Paulo 18607-440, Brazil
| | - João P Araújo Junior
- Biotechnology Institute, São Paulo State University (UNESP), Rubiao Junior, Botucatu, São Paulo 18607-440, Brazil
| | - Joanne B Messick
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, Indiana 47907, USA
| | - Alexander W Biondo
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, Indiana 47907, USA
- Institute of Collective Health (ICH), Federal University of Bahia (UFBA), Basílio da Gama Street, Salvador, Bahia 40110-040, Brazil
| | - Andrea P Dos Santos
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, Indiana 47907, USA
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Praxedes ÉA, Oliveira LRMD, da Silva Viana JV, Rodrigues LLV, de Brito Vieira Neto J, Sales SLA, Dos Santos Luciano MC, Oliveira MFD, Pessoa C, Pereira AF. Serum starvation is as efficient as roscovitine on the cycle synchronization in G 0/G 1 of red-rumped agouti fibroblasts. In Vitro Cell Dev Biol Anim 2024; 60:249-257. [PMID: 38427137 DOI: 10.1007/s11626-024-00866-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024]
Abstract
Fibroblast cycle synchronization in G0/G1 is an essential step for nuclear reprogramming by cloning or induced cells to pluripotency. Considering the diversity among rodents and the ecological and scientific importance of these animals, we compared the contact inhibition, serum starvation, and 10 µM of roscovitine as methods of synchronization of red-rumped agouti fibroblasts. The effects of each protocol were evaluated on the percentage of cycle phase, morphology, viability, and apoptosis levels. The results showed that culturing the cells to serum starvation for 24 h (75.9%), 48 h (81.6%), 72 h (86.2%), 96 h (84.0%), and 120 h (83.7%) yielded a significantly higher percentage of cells arrested in the G0/G1 (P < 0.05) phase than cells not subjected to any cell cycle synchronization method (31.4%). Also, this effect was not different between the times of 48 and 120 h (P > 0.05). A similar response was observed for cells cultured with roscovitine for 12 h (86.9%), 24 h (74.8%), and 48 h (81.7%), with a higher percentage of synchronized cells in G0/G1 compared to cells not submitted to any synchronization treatment (52.2%). Nevertheless, this effect was best evidenced at 12 h (P < 0.05). Also, the contact inhibition for 24-120 h could not synchronize cells in G0/G1, with values ranging from 70.9 to 77.9% (P > 0.05). Moreover, no difference was observed for morphology, viability, and apoptosis levels in any synchronization method (P > 0.05). Therefore, serum starvation is as efficient as roscovitine on cycle synchronization in G0/G1 of red-rumped agouti fibroblasts.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | | | - João Vitor da Silva Viana
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | - Luanna Lorenna Vieira Rodrigues
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | | | | | | | - Moacir Franco de Oliveira
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | - Cláudia Pessoa
- Experimental Oncology Laboratory, Universidade Federal Do Ceará, Fortaleza, CE, Brazil
| | - Alexsandra Fernandes Pereira
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil.
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Tezcan ME, Uğur C, Can Ü, Uçak EF, Ekici F, Duymuş F, Korucu AT. Are decreased cocaine- and amphetamine regulated transcript and Agouti- related peptide levels associated Eating behavior in medication-free children with attention deficit and hyperactivity disorder? Prog Neuropsychopharmacol Biol Psychiatry 2024; 129:110907. [PMID: 38043633 DOI: 10.1016/j.pnpbp.2023.110907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/21/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Abstract
This study aimed to investigate plasma levels of cocaine- and amphetamine-regulated transcript (CART), agouti-related protein (AgRP), cholecystokinin (CCK) and peptide YY (PYY) and their relationship with eating behaviors among children with attention deficit hyperactivity disorder (ADHD) and healthy controls. A total of 94 medication-free children with ADHD and 82 controls aged 8-14 years were included in this study. The Plasma levels of CART, AgRP, CCK and PYY were measured using enzyme-linked immunosorbent assay kits. The Children's Eating Behavior Questionnaire (CEBQ) was used to assess eating behaviors in children. CART and AgRP levels were found to be significantly lower in the ADHD group than in the control group, while CCK levels were found to be significantly higher in the ADHD group than in the control group. However, there was no significant difference in PYY levels between the groups. Compared to controls, those with ADHD demonstrated significantly higher scores on the CEBQ subscales of food responsiveness, emotional overeating, desire to drink, enjoyment of food, and food fussiness, and significantly lower scores on the slowness of eating subscale. CART was significantly correlated with emotional overeating and enjoyment of food scores, while AgRP was significantly correlated with emotional undereating scores. Covariance analysis was performed by controlling potential confounders such as body mass index, age and sex, and the results were found to be unchanged. It was concluded that CART, AgRP, and CCK may play a potential role in the pathogenesis of ADHD.
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Affiliation(s)
- Mustafa Esad Tezcan
- Department of Child and Adolescent Psychiatry, Konya City Hospital, Karatay-Konya, 42020, Turkey.
| | - Cüneyt Uğur
- Department of Pediatrics, Konya City Health Application and Research, University of Health Sciences Turkey, Karatay-Konya, 42020, Turkey
| | - Ümmügülsüm Can
- Department of Medical Biochemistry, Konya City Health Application and Research, University of Health Sciences Turkey, Karatay-Konya, 42020, Turkey
| | - Ekrem Furkan Uçak
- Department of Psychiatry, Konya City Hospital, Karatay-Konya, 42020, Turkey
| | - Fatih Ekici
- Department of Psychiatry, Konya City Hospital, Karatay-Konya, 42020, Turkey
| | - Fahrettin Duymuş
- Department of Medical Genetics, Konya City Hospital, Karatay-Konya, 42020, Turkey
| | - Agah Tuğrul Korucu
- Faculty of Computer and Instructional Technologies, Necmettin Erbakan University, Meram-Konya, 42005, Turkey
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Castelo TDS, Silva AMD, Peixoto GCX, Souza ALP, Campos LB, Lima GL, Dantas MRT, Souza-Junior JBFD, Silva AR. Cryopreservation efficiency of red-rumped agouti (Dasyprocta leporina) sperm obtained from different origins through epididymal retrograde flushing or electroejaculation. Cryobiology 2023; 113:104787. [PMID: 37890650 DOI: 10.1016/j.cryobiol.2023.104787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/26/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
This study investigated whether the origin of sperm (epididymal vs. ejaculate) affects the cryopreservation efficiency in agouti (Dasyprocta leporina). Five sexually mature agoutis underwent electroejaculation, resulting in obtaining four semen samples. After 15 days, the same animals were euthanized, and through retrograde flushing, sperm samples were obtained from the epididymis tails. In both collection methods, samples were evaluated for sperm parameters (sperm concentration, motility, vigor, membrane integrity, osmotic response, and morphology). Then, samples were diluted in ACP 109c, added with 20% egg yolk, and a final concentration of 6% glycerol. Finally, the samples were packaged in 0.25 mL straws and frozen in liquid nitrogen. After one week, samples were thawed and evaluated in the same way as fresh samples, with the addition of membrane integrity analysis using fluorescent probes (C-FDA/PI) and computerized analysis (CASA). Immediately after obtaining the sperm, samples obtained directly from the epididymis presented higher values (P ≤ 0.05) than those obtained by electroejaculation concerning the parameters of volume, sperm concentration, and total number of sperm (1,398.25 ± 206.0 x106 and 184.5 ± 78.0 x106 sperm). On the other hand, in the classical evaluation of the other sperm parameters and the computerized analysis (CASA) after thawing, such as total motility, no statistical differences were observed between sperm from both origins (ejaculate: 16.7 ± 8.2% and epididymal: 24.8 ± 12.0%, P > 0.05). This demonstrates the possibility of direct application of the cryopreservation protocol for agouti (D. leporina) sperm obtained via the epididymis or ejaculate.
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Affiliation(s)
- Thibério de Sousa Castelo
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Andréia Maria da Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Gislayne Christianne Xavier Peixoto
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Ana Liza Paz Souza
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Lívia Batista Campos
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Gabriela Liberalino Lima
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Maiko Roberto Tavares Dantas
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - João Batista Freire de Souza-Junior
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Alexandre Rodrigues Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil.
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Tertulino MD, de Sousa ACFC, Gurgel JVDO, Lopes IRG, Diniz JARA, de Paula VV, de Paula Antunes JMA, de Oliveira REM, de Oliveira MF. Abdominal aortic branches of red-rumped agouti (Dasyprocta leporina Linnaeus, 1758). Anat Histol Embryol 2023; 52:975-982. [PMID: 37649409 DOI: 10.1111/ahe.12957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 08/03/2023] [Accepted: 08/16/2023] [Indexed: 09/01/2023]
Abstract
Understanding the cardiovascular system is fundamental in diagnosing pathologies and interpreting exams, such as contrast radiographs. In this context, the present study describes the collateral abdominal aorta artery branches of red-rumped agouti. Ten red-rumped agoutis, six males and four females, were assessed. The vascular system was perfused with Neoprene 450 latex coloured with a yellow pigment, dissected and analysed. Three euthanized animals were perfused with a barium sulfate solution (1 g mL-1 ) associated with latex Neoprene 450 at a 1:3 ratio to obtain contrast-enhanced radiographs. The abdominal aorta emitted the celiac artery, which in turn originated the left gastric, hepatic and splenic arteries. The second collateral branch comprised the cranial mesenteric artery, followed by the renal arteries, which emitted the adrenal arteries, with the caudal emergence of the gonadal arteries. The caudal mesenteric artery appeared in a caudal direction. The abdominal aorta divided after reaching the pelvic cavity entrance, originating the right and left common iliac arteries. Before its bifurcation, the abdominal aorta dorsocaudally emitted its last collateral branch, the median sacral artery. The collateral branches of the aorta, therefore, resemble previously described rodent patterns, with few variations.
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Affiliation(s)
- Moisés Dantas Tertulino
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
| | - Ana Caroline Freitas Caetano de Sousa
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
| | - João Vitor de Oliveira Gurgel
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
| | - Igor Renno Guimarães Lopes
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
- Graduate Program in Animal Science (PPGCA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido-UFERSA, Mossoró, Brazil
| | - João Augusto Rodrigues Alves Diniz
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
- Graduate Program in Animal Science (PPGCA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido-UFERSA, Mossoró, Brazil
| | - Valéria Veras de Paula
- Graduate Program in Animal Science (PPGCA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido-UFERSA, Mossoró, Brazil
| | | | - Radan Elvis Matias de Oliveira
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
- Graduate Program in Animal Science (PPGCA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido-UFERSA, Mossoró, Brazil
| | - Moacir Franco de Oliveira
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido- UFERSA, Mossoró, Brazil
- Graduate Program in Animal Science (PPGCA), Department of Animal Sciences (DCA), Universidade Federal Rural do Semi-Árido-UFERSA, Mossoró, Brazil
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Freire ECB, Branco É, Giese EG, Monteiro FOB, Mayor P, de Lima AR. Urogenital development and sexual differentiation in males of the species Dasyprocta fuliginosa. Anat Histol Embryol 2023; 52:956-966. [PMID: 37605845 DOI: 10.1111/ahe.12955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/10/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023]
Abstract
Thirteen black agouti (Dasyprocta fuliginosa) male fetuses, acquired in two areas of the Amazon Forest, were used for the purpose of morphologically describing the fetal male urogenital organs with a focus on addressing histological and macroscopic aspects. The organs of interest were dissected and photographed in situ and ex situ. Fragments were collected and subjected to routine histological processing for inclusion in paraffin, which was cut and stained by haematoxylin and eosin and Gomori's Trichrome methods and subsequently analysed in a light microscope. The results showed that the urinary tract is like that of domestic animals and is composed of smooth unilobed kidneys covered by a dense capsule of connective tissue and divided into two well-defined regions, cortical and medullary. Ureters, urethra and urinary bladder also showed macroscopic and microscopic characteristics similar to those of domestic animals. The penis of these animals has fibroelastic characteristics, with numerous keratinized structures at its apex. In the middle third of the penis, a "U" shaped penile flexure was seen; the glans penis is covered by a keratinized epidermis containing horny spicules. The presence of a penile bone in an endochondral ossification process was observed, being more developed in gestational ages greater than 76 days. The annex glands were not observed, probably because they were fetuses; only the ampulla of the ductus deferens was identified.
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Affiliation(s)
- Elisa Carla Barra Freire
- Institute of Health and Animal Production (ISPA), Federal Rural University of the Amazon (UFRA), Belém, Brazil
| | - Érika Branco
- Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA), Federal Rural University of the Amazon (UFRA), Belém, Brazil
| | - Elane Guerreiro Giese
- Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA), Federal Rural University of the Amazon (UFRA), Belém, Brazil
| | - Frederico Ozanan Barros Monteiro
- Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA), Federal Rural University of the Amazon (UFRA), Belém, Brazil
| | - Pedro Mayor
- Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA), Federal Rural University of the Amazon (UFRA), Belém, Brazil
- Departament de Sanitat i d'Anatomia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
- Museo de Culturas Indígenas Amazónicas, Iquitos, Peru
- ComFauna, Comunidad de Manejo de Fauna Silvestre en la Amazonía y en Latinoamérica, Iquitos, Peru
- Rede de Pesquisa em Diversidade, Conservação e Uso da Fauna na Amazônia (REDEFAUNA), Manaus, Brazil
| | - Ana Rita de Lima
- Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA), Federal Rural University of the Amazon (UFRA), Belém, Brazil
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Kosiński JG, Żywicki M. AGouTI-Flexible Annotation of Genomic and Transcriptomic Intervals. PLoS Comput Biol 2023; 19:e1011527. [PMID: 37851672 PMCID: PMC10621952 DOI: 10.1371/journal.pcbi.1011527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 11/02/2023] [Accepted: 09/19/2023] [Indexed: 10/20/2023] Open
Abstract
The recent development of high-throughput workflows in genomics and transcriptomics revealed that efficient annotation of such results is essential for researchers to draw conclusions from obtained results. Although some tools are available, their functionality is limited. Here, we present AGouTI-a universal tool for flexible annotation of any genomic or transcriptomic coordinates using known genomic features deposited in different publicly available databases in the form of GTF or GFF files. In contrast to currently available tools, AGouTI is designed to provide a flexible selection of genomic features overlapping or adjacent to annotated intervals and can be used on custom column-based text files obtained from different data analysis pipelines. Although providing many unique options, AGouTI is straightforward in installation and usage, enabling effortless integration into existing data analysis workflows.
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Affiliation(s)
- Jan G Kosiński
- Department of Computational Biology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Marek Żywicki
- Department of Computational Biology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
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9
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de Oliveira GB, de Araújo Júnior HN, de Moura CEB, Favaron PO, Pereira AF, de Oliveira MF. Placental development in the early stages of red-rumped agouti pregnancy ( Dasyprocta leporina Linnaeus, 1758). J Vet Sci 2023; 24:e49. [PMID: 38031643 PMCID: PMC10556294 DOI: 10.4142/jvs.22323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/18/2023] [Accepted: 05/17/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Hystricomorpha rodents display a similar placentation model to humans. The present study was carried out considering the scarcity of information concerning the placental development in agouti. OBJECTIVE Describe the microscopy of the placenta, subplacenta and yolk sac of agoutis in early pregnancy and report on the inversion of the yolk sac. METHODS Fifteen females between the 14th-32nd day of gestation were used following euthanasia. Gestational buttons were collected, fixed, processed, stained to optical microscopy or immunohistochemistry. RESULTS Chorioallantoic placenta (CP) ranged from conical to a half-sphere, as follows: from the 14th to 17th day, the CP displays an inverted "V" shape, predominantly formed by cytotrophoblasts; from 20 to 22 days, formed almost entirely by cytotrophoblasts; at 28 days, a half sphere, with distinct lobes and interlobular area, numerous maternal gaps delimited by syncytiotrophoblasts and trophoblast giant cells; at 32 days, globose and undergoing the maturation process. Subplacenta, located between decidua and CP, initially presents septa consisting of simple columnar epithelium and after 17 days, comprising stratified epithelium. Visceral yolk sac (VYS) is attached to two CP projections between 14 and 17 days, formed by a simple cubic epithelium and inverted. Between 20 and 22 days, the epithelium displays apical villous projections with cytoplasmic vacuoles and a vascularized mesoderm. After the 24th day, the VYS near the placenta is pleated, very vascularized and villous, with decreased villi sizes further away from the placenta. CONCLUSION The agouti CP displays similar characteristics to other hystricomorpha, including placenta lobulation, a subplacenta and an inverted vitelline placenta.
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Affiliation(s)
| | | | | | | | | | - Moacir Franco de Oliveira
- Department of Animal Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN 59.625-900, Brasil
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de Souza AJS, Malheiros AP, Chagas AACD, Alves MM, Bernal MKM, Carneiro LA, Gomes-Gouvêa MS, Nunes HM. Cysticercosis in free-ranging agoutis (Dasyprocta leporina) in the Eastern Brazilian Amazon. Rev Bras Parasitol Vet 2023; 32:e006723. [PMID: 37493786 PMCID: PMC10399550 DOI: 10.1590/s1984-29612023044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 06/19/2023] [Indexed: 07/27/2023]
Abstract
The study describes the occurrence of cysticercosis in liver of 22 wild agoutis (Dasyprocta leporina) in the Brazilian Amazon. The phylogenetic analysis and microscopic characteristics of metacestodes in liver tissue sections, associated with the geographic distribution of the intermediate hosts indicated that a possibly novel Taenia sp. metacestode caused the parasitism. Additionally, two cases of hepatic co-infection by Taenia sp., Calodium sp. and Echinococcus oligarthra were also observed among the analyzed animals. The results point to the need for a better understanding of hepatotropic parasites among wild rodents in the Brazilian Amazon.
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Affiliation(s)
- Alex Junior Souza de Souza
- Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
- Instituto de Ciências da Saúde, Universidade Paulista - UNIP, Campinas, SP, Brasil
| | - Andreza Pinheiro Malheiros
- Seção de Hepatologia, Instituto Evandro Chagas - IEC, Secretaria de Vigilância em Saúde, Ministério da Saúde, Belém, PA, Brasil
| | - André Antônio Corrêa das Chagas
- Seção de Hepatologia, Instituto Evandro Chagas - IEC, Secretaria de Vigilância em Saúde, Ministério da Saúde, Belém, PA, Brasil
| | - Max Moreira Alves
- Seção de Hepatologia, Instituto Evandro Chagas - IEC, Secretaria de Vigilância em Saúde, Ministério da Saúde, Belém, PA, Brasil
| | | | - Liliane Almeida Carneiro
- Centro Nacional de Primatas - CENP, Secretaria de Vigilância em Saúde, Ministério da Saúde, Ananindeua, PA, Brasil
| | - Michele Soares Gomes-Gouvêa
- Departamento de Gastroenterologia LIM-07, Instituto de Medicina Tropical - IMT, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Heloisa Marceliano Nunes
- Seção de Hepatologia, Instituto Evandro Chagas - IEC, Secretaria de Vigilância em Saúde, Ministério da Saúde, Belém, PA, Brasil
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Praxedes EA, Silva MB, Medeiros de Oliveira LR, da Silva Viana JV, Pereira AF. Interactions among sucrose and concentrations of serum fetal bovine on the cryopreservation of somatic cells derived from red-rumped agoutis. Cryo Letters 2023; 44:110-108. [PMID: 37883160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
BACKGROUND The synergistic action among the different extracellular cryoprotectants could improve somatic cell quality after thawing and provide bases for the formation of biobanks for red-rumped agoutis. OBJECTIVE This study evaluated the interactions among sucrose (SUC) and concentrations of serum fetal bovine (FBS) on the cryopreservation of somatic cells derived from red-rumped agoutis. MATERIALS AND METHODS Cells were cryopreserved with 10% dimethyl sulfoxide and different concentrations of FBS (10%, 40%, and 90%) with or without 0.2 M SUC, totaling six comparison groups. Non-cryopreserved cells were used as a control. Cells were evaluated for viability, metabolic activity, proliferative activity, reactive oxygen species (ROS), mitochondrial membrane potential and apoptosis levels. RESULTS No difference was observed among cryopreserved with DMSO containing (10FBS, 10FBS-SUC, 40FBS, 40FBS-SUC, 90FBS, 90FBS-SUC) and non-cryopreserved groups for viability, metabolic activity, proliferative activity, and ROS levels. Interestingly, only cells cryopreserved with 90% FBS and SUC maintained the mitochondrial membrane potential like the control. This indicates that at high concentrations of FBS, SUC contributes to the maintenance of this parameter in cryopreserved cells. Moreover, at concentrations of 10% and 40% of FBS, SUC contributed to the maintenance of viability evaluated by the levels of apoptosis evaluated after thawing. In summary, we verified that 90% FBS and 0.2 M SUC promote greater ability of cells after thawing. Additionally, SUC positively acts in cryopreservation solutions containing 10% and 40% FBS. CONCLUSION This information is essential to an understanding of the mechanisms involved in the interactions of extracellular cryoprotectants in somatic cell cryopreservation solutions of red-rumped agoutis. DOI: 10.54680/fr23210110212.
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Affiliation(s)
- E A Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - M B Silva
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | | | - J V da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil.
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Rodrigues LLV, do Nascimento MB, Costa de Aquino LV, Caritas Barros Dos Santos MD, Silva AR, de Oliveira MF, Pereira AF. Evaluation of different cryoprotectant solutions for the cryopreservation of somatic tissues of Dasyprocta leporina (Linnaeus, 1758). Cryo Letters 2021; 42:210-219. [PMID: 35363840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND Somatic tissue banks represent important tools for the conservation of wild mammals, aiming at the immediate maintenance and safeguarding of biological samples. For agouti, Dasyprocta leporina, studies on the formation of these banks are still scarce, especially regarding protocols of the best cryoprotectant solution employed. OBJECTIVE To optimize the cryoprotectant solution [ethylene glycol (EG), dimethyl sulfoxide (DMSO), sucrose (SUC)] used for the cryopreservation of agouti somatic tissues. MATERIALS AND METHODS We treated ear tissues with various cryoprotectant solutions: 3.0 M EG (EG group), 3.0 M EG and 0.25 M SUC (EG-SUC group), 3.0 M DMSO (DMSO group), 3.0 M DMSO and 0.25 M SUC (DMSO-SUC group), 1.5 M EG and 1.5 M DMSO (EG-DMSO group) and 1.5 M EG, 1.5 M DMSO and 0.25 M SUC (EG-DMSO-SUC group). Non-cryopreserved tissues were used as controls. All tissues were analyzed for their ultrastructural and morphometric characteristics by scanning electron microscopy and conventional histology. RESULTS EG-DMSO-SUC was found to be the optimal cryoprotectant solution in terms of the evaluated parameters, such as thickness of the dermis and skin, number of perinuclear halos, proliferative potential, number of empty lacunas and degenerated chondrocytes. CONCLUSION Agouti somatic tissue cryopreservation may serve for its conservation and as an experimental model for the development of preservation methods for species of the same genus that are either vulnerable or critically endangered.
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Affiliation(s)
- L L V Rodrigues
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - M B do Nascimento
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - L V Costa de Aquino
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - A R Silva
- Laboratory of Animal Germplasm Conservation, UFERSA, Mossoro, RN, Brazil
| | - M F de Oliveira
- Laboratory of Applied Animal Morphophysiology, UFERSA, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil.
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Escribano BM, Medina-Fernández FJ, Aguilar-Luque M, Agüera E, Feijoo M, Garcia-Maceira FI, Lillo R, Vieyra-Reyes P, Giraldo AI, Luque E, Drucker-Colín R, Túnez I. Lipopolysaccharide Binding Protein and Oxidative Stress in a Multiple Sclerosis Model. Neurotherapeutics 2017; 14:199-211. [PMID: 27718209 PMCID: PMC5233624 DOI: 10.1007/s13311-016-0480-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Recent findings in experimental autoimmune encephalomyelitis (EAE) suggest that altering certain bacterial populations present in the gut may lead to a proinflammatory condition, that could result in the development of multiple sclerosis (MS). Also, Reactive Oxygen Species seem to be involved in the course of MS. In this study, it has been aimed to relate all these variables starting from an analysis of the lipopolysaccharide (LPS) and LPS-binding protein (LBP) with the determination of parameters related to oxidative stress in the blood, brain and spinal cord. For this purpose, samples obtained from EAE rats and relapsing-remitting (RRMS) MS patients were used. In addition, EAE rats were treated with Natalizumab, N-acetyl-cysteine and dimethyl fumarate. Natalizumab was also employed in RRMS. The results of this study revealed an improvement in the clinical symptoms of the EAE and MS with the treatments, as well as a reduction in the oxidative stress parameters and in LBP. Correlations between the clinical variables of the disease, i.e. oxidative damage and LBP, were established. Although the conclusions of this research are indeed relevant, further investigation would be necessary to establish the intrinsic mechanisms of the MS-oxidative stress-microbiota relationship.
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Affiliation(s)
- Begoña M Escribano
- Departamento de Biologia Celular, Fisiologia e Inmunologia, Facultad de Veterinaria, Universidad de Cordoba, Cordoba, Spain
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
| | - Francisco J Medina-Fernández
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Departamento de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain
| | - Macarena Aguilar-Luque
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Departamento de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain
| | - Eduardo Agüera
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Servicio de Neurología, Hospital Universitario Reina Sofía de Cordoba, Cordoba, Spain
| | - Montserrat Feijoo
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Departamento de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain
| | | | - Rafael Lillo
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Departamento de Ciencias Sociosanitarias y Radiologia y Medicina Fisica, Seccion de Psiquiatria, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain
| | - Patricia Vieyra-Reyes
- Departamento Neurofisiología de la Conducta, Facultad de Medicina, Universidad Autonoma del Estado de México, Toluca, Estado de Mexico, Mexico
| | - Ana I Giraldo
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Departamento de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain
| | - Evelio Luque
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain
- Departamento de Ciencias Morfologicas, Seccion Histologia, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain
| | - René Drucker-Colín
- Departamento de Neuropatologia Molecular, Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico (UNAM), Ciudad de Mexico, D.F., Mexico
| | - Isaac Túnez
- Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain.
- Departamento de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Cordoba, Cordoba, Spain.
- Red Tematica de Investigacion Cooperativa en Envejecimiento y Fragilidad (RETICEF), Cordoba, Spain.
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Michalski LJ, Norris D, de Oliveira TG, Michalski F. Ecological relationships of meso-scale distribution in 25 neotropical vertebrate species. PLoS One 2015; 10:e0126114. [PMID: 25938582 PMCID: PMC4418742 DOI: 10.1371/journal.pone.0126114] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 03/30/2015] [Indexed: 11/29/2022] Open
Abstract
Vertebrates are a vital ecological component of Amazon forest biodiversity. Although vertebrates are a functionally important part of various ecosystem services they continue to be threatened by anthropogenic impacts throughout the Amazon. Here we use a standardized, regularly spaced arrangement of camera traps within 25km2 to provide a baseline assessment of vertebrate species diversity in a sustainable use protected area in the eastern Brazilian Amazon. We examined seasonal differences in the per species encounter rates (number of photos per camera trap and number of cameras with photos). Generalized linear models (GLMs) were then used to examine the influence of five variables (altitude, canopy cover, basal area, distance to nearest river and distance to nearest large river) on the number of photos per species and on functional groups. GLMs were also used to examine the relationships between large predators [Jaguar (Panthera onca) and Puma (Puma concolor)] and their prey. A total of 649 independent photos of 25 species were obtained from 1,800 camera trap days (900 each during wet and dry seasons). Only ungulates and rodents showed significant seasonal differences in the number of photos per camera. The number of photos differed between seasons for only three species (Mazama americana, Dasyprocta leporina and Myoprocta acouchy) all of which were photographed more (3 to 10 fold increase) during the wet season. Mazama americana was the only species where a significant difference was found in occupancy, with more photos in more cameras during the wet season. For most groups and species variation in the number of photos per camera was only explained weakly by the GLMs (deviance explained ranging from 10.3 to 54.4%). Terrestrial birds (Crax alector, Psophia crepitans and Tinamus major) and rodents (Cuniculus paca, Dasyprocta leporina and M. acouchy) were the notable exceptions, with our GLMs significantly explaining variation in the distribution of all species (deviance explained ranging from 21.0 to 54.5%). The group and species GLMs showed some novel ecological information from this relatively pristine area. We found no association between large cats and their potential prey. We also found that rodent and bird species were more often recorded closer to streams. As hunters gain access via rivers this finding suggests that there is currently little anthropogenic impact on the species. Our findings provide a standardized baseline for comparison with other sites and with which planned management and extractive activities can be evaluated.
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Affiliation(s)
- Lincoln José Michalski
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
- Laboratório de Ecologia e Conservação de Vertebrados, Universidade Federal do Amapá, Macapá, Amapá, Brazil
| | - Darren Norris
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
- Laboratório de Ecologia e Conservação de Vertebrados, Universidade Federal do Amapá, Macapá, Amapá, Brazil
- Programa de Pós-Graduação em Biodiversidade Tropical, Universidade Federal do Amapá, Macapá, Amapá, Brazil
| | - Tadeu Gomes de Oliveira
- Departamento de Biologia, Universidade Estadual do Maranhão, São Luís, Maranhão, Brazil
- Instituto Pró-Carnívoros, Atibaia, São Paulo, Brazil
| | - Fernanda Michalski
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
- Laboratório de Ecologia e Conservação de Vertebrados, Universidade Federal do Amapá, Macapá, Amapá, Brazil
- Instituto Pró-Carnívoros, Atibaia, São Paulo, Brazil
- Programa de Pós-Graduação em Biodiversidade Tropical, Universidade Federal do Amapá, Macapá, Amapá, Brazil
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Kasten FH. Comparative Histological Studies of Endocrine Glands of Yellow (A[unknown]a) and Non-agouti (aa) Mice in Relation to the Problem of Hereditary Obesity. Science 2010; 115:647-9. [PMID: 17844312 DOI: 10.1126/science.115.2998.647] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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SILVERS WK. An experimental approach to action of genes at the agouti locus in the mouse. II. Transplants of newborn aa ventral skin to ata, Awa and aa hosts. ACTA ACUST UNITED AC 2000; 137:181-7. [PMID: 13563790 DOI: 10.1002/jez.1401370109] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
The action of genes at the agouti locus in rats is similar to that of genes at the same locus in mice-the color phenotype of hairs is determined by the operation of agouti-locus alleles in the follicle, rather than in the melanocytes. Hairs produced by mouse skin growing on partially tolerant infant rat hosts show that rat melanocytes also respond to the agouti-locus genotype of mouse follicles. This constitutes the first example in vivo of the behavior of a cell of one species being completely determined by the genotype of an alien host species.
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CLEFFMANN G. Agouti pigment cells in situ and in vitro. Ann N Y Acad Sci 1963; 100:749-61. [PMID: 14021659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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SILVERS WK. An experimental approach to action of genes at the agouti locus in the mouse. III. Transplants of newbornAw-,A- andat- skin toAy-,Aw-,A- andaa hosts. ACTA ACUST UNITED AC 1958; 137:189-96. [PMID: 13563791 DOI: 10.1002/jez.1401370110] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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TORREALBA JF. [Preliminary note on a Trypanosoma of the lewisi group, found in the rodent Dasyprocta rubrata of Venezuela]. Gac Med Caracas 1954; 61:37-52. [PMID: 13173784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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CLEFFMANN G. [Studies on the coat markings of wild rabbits; a contribution to the mechanism of the agouti factor]. Z Indukt Abstamm Vererbungsl 1953; 85:137-62. [PMID: 13091004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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