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Journal of Medical Primatology

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https://www.readbyqxmd.com/read/29283447/hepatocellular-carcinoma-in-a-free-living-marmoset-callithrix-sp-with-concomitant-biliary-trematodiasis
#1
J Díaz-Delgado, T C Sanches, C Dos Santos-Cirqueira, A A C Coimbra, J M Guerra, A Joppert, C Di Loretto, M B Rizardi, M Sansone, F O Nagamori, P S Gonçalves, R Ressio, S Iglezias, N C C A Fernandes, C Kanamura, K R Groch, J L Catão-Dias
Hepatocellular carcinoma (HCC) is rare in New World primates. We report the gross, microscopical, and immunocytochemical features of a spontaneous HCC in a free-living marmoset (Callithrix sp.). Hepatitis B and C virus and aflatoxin immunohistochemistry were negative; however, concomitant intra- and extrahepatic biliary trematodiasis could have played a role.
December 28, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29283438/spontaneous-pulmonary-adenosquamous-carcinoma-in-a-free-living-black-capuchin-monkey-sapajus-nigritus
#2
J Díaz-Delgado, J M Guerra, N C C A Fernandes, E Gonçalves-Serra, G A Minozzo, C Di Loretto, S Iglezias, K R Groch, R Ressio, C Kanamura, J L Catão-Dias
Pulmonary neoplasia is rare among wild New World primates. We report the gross, microscopical, and immunohistochemical features of a primary multicentric pulmonary adenosquamous carcinoma in a free-living black capuchin monkey (Sapajus nigritus). Herein, the spectrum of pulmonary neoplasms in non-human primates is widened and briefly reviewed.
December 28, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29231971/enzooty-of-non-hodgkin-s-malignant-lymphoma-of-papio-hamadryas-in-sukhumi-monkey-colony-clinical-and-morphological-signs-of-pre-lymphoma
#3
Lelita A Yakovleva, Boris A Lapin, Aslan A Agumava
Inoculation of hamadryas baboons with blood of leukemia ill people-induced malignant non-Hodgkin's lymphoma in experimental animals for a very considerable latency period. At close contact of inoculated baboons with healthy non-inoculated animals, the lymphoma spread between them. The epidemiological analysis, postmortem examination, histological analysis, tissue culturing, and PCR were used for the diagnostics of lymphoma and pre-lymphoma, purification, identification of STLV-1, and HVP viruses. Characteristic clinical and morphological signs designated by us as pre-lymphoma often precede the lymphoma development...
December 12, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29193149/case-study-scoliosis-in-a-bonobo-pan-paniscus
#4
Hallie Mason Smith Lloyd, Claire A Kirchhoff
Differential diagnosis of observed morphological features on an adult male bonobo skeleton was consistent with idiopathic scoliosis. Directional asymmetry was an order of magnitude higher compared with asymptomatic skeletons. This possible case of idiopathic scoliosis contributes to data that suggest a weaker tie between bipedalism and scoliosis than previously hypothesized.
November 29, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29193137/fatal-toxoplasmosis-in-a-southern-muriqui-brachyteles-arachnoides-from-s%C3%A3-o-paulo-state-brazil-pathological-immunohistochemical-and-molecular-characterization
#5
Stéfanie Vanessa Santos, Hilda F J Pena, Mauricio T Gomes, Rodrigo H F Teixeira, Cristina T Kanamura, Josué Diaz-Delgado, Solange M Gennari, José Luiz Catão-Dias
We report the pathological, immunohistochemical, and molecular features of fatal acute systemic toxoplasmosis in an adult, female, free-living southern muriqui (Brachyteles arachnoides) from São Paulo state, Brazil. PCR-RFLP genotyping analysis identified the #21 genotype of Toxoplasma gondii. This represents the first report of acute toxoplasmosis involving this genotype in humans and animals.
November 29, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29171026/hepatocellular-carcinoma-in-two-captive-golden-headed-lion-tamarins-leontopithecus-chrysomelas
#6
Tatiane Furtado de Carvalho, Marianna de Paula Martins Pereira, Angela Tinoco Pessanha, Herlandes Penha Tinoco, Tatiane Alves Paixão, Renato Lima Santos
Two cases of hepatocellular carcinoma (HCC) in 2 female captive golden-headed lion tamarins (Leontopithecus chrysomelas) are described. HCC was diagnosed in both, with pulmonary metastasis in one of them. Neoplastic cells were positive for hepatocyte-specific antigen (HSA) by immunohistochemistry, confirming the diagnosis.
November 23, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29114906/evaluation-of-three-chemical-immobilization-protocols-in-golden-headed-lion-tamarins-leontopithecus-chrysomelas-undergoing-vasectomy-surgery
#7
Mario A Ferraro, Camila V Molina, José L Catão-Dias, Maria C M Kierulff, Alcides Pissinatti, Marina G Bueno, Silvia R G Cortopassi
BACKGROUND: The golden-headed lion tamarin (Leontopithecus chrysomelas), originally endemic to Bahia, was introduced in Rio de Janeiro. The species is currently found in remaining forests within the region of original occupation of the golden lion tamarin (Leontopithecus rosalia), which may compromise the survival of the golden lion tamarin. Groups of golden-headed lion tamarins were captured and translocated to Bahia. However, the area chosen reached its limit and males underwent to vasectomy procedures...
November 8, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29112236/amelogenesis-imperfecta-in-the-dentition-of-a-wild-chimpanzee
#8
Ian Towle, Joel D Irish, Isabelle De Groote
This report describes a case of amelogenesis imperfecta in the dentition of a female chimpanzee. Amelogenesis imperfecta is a group of rare genetic conditions that create severe enamel defects, which, although well researched in humans, has not yet been investigated in wild non-human primates.
November 7, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29072318/cortical-beta-eeg-oscillations-related-to-changes-in-muscle-tone-activity-during-sleep-in-spider-monkey-ateles-geoffroyi
#9
Manuel Alejandro Cruz-Aguilar, Miguel Angel Guevara, Marisela Hernández-González, Ignacio Ramírez-Salado, Enrique Hernández-Arteaga, Fructuoso Ayala-Guerrero
BACKGROUND: The physiological mechanisms that allow for sleeping in a vertical position, which is primordial for arboreal primates, have not been studied yet. METHODS: A non-invasive polysomnographic study of 6 spider monkeys (Ateles geoffroyi) was conducted. The relative beta power of the motor cortex and its linear relation with muscle tone in the facial mentalis muscle and the abductor caudae medialis muscle of the tail during wakefulness and sleep stages were calculated...
October 26, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29063622/effect-of-menstrual-cycle-phase-and-hormonal-treatments-on-evaluation-of-tubal-patency-in-baboons
#10
Jeffrey T Jensen, Carol Hanna, Emily Mishler, Jeong Y Lim, Ov D Slayden
BACKGROUND: We evaluated whether menstrual cycle phase influences the assessment of tubal patency by hysterosalpingography (HSG) in baboons. METHODS: Retrospective analysis of baseline tubal patency studies and serum estradiol (E2 ) and progesterone (P4) values obtained from female baboons used as models for development of non-surgical permanent contraception in women. The main outcome measure was bilateral tubal patency (BTP) in relationship with estradiol level...
October 24, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29048110/morphometric-and-morphologic-parameters-of-the-heart-in-healthy-alouatta-guariba-clamitans-cabrera-1940
#11
Murilo Gomes de Soutello Charlier, Maurício Gianfrancesco Filippi, Carolina Hagy Girotto, Vanessa Lanes Ribeiro, Carlos Roberto Teixeira, Maria Lúcia Gomes Lourenço, Luiz Carlos Vulcano
BACKGROUND: This study aimed at assessing the heart function of one neotropical primate (Alouatta guariba clamitans) kept in captivity using radiography, electrocardiogram (ECG) and Doppler echocardiography. METHODS: Ten adult healthy howler monkeys (A. g. clamitans) were evaluated under general anaesthesia. Vertebral Heart Scores (VHS) were obtained from radiographic studies. Ejection fraction, shortening fraction of left ventricle, left atrial/aortic root ratio, ascending aortic diameter, peak velocity of pulmonary, mitral, tricuspid and aortic blood flow and other values were measured by Doppler echocardiography...
October 19, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28940591/preliminary-studies-on-the-use-of-pertussis-toxin-for-the-modulation-of-intravaginal-siv-transmission-in-rhesus-macaques
#12
Kristina Ortiz, Rebecca S Sampathkumar, Aftab A Ansari, Siddappa N Byrareddy
BACKGROUND: Pertussis toxin (PTX) blocks GPCR signaling resulting in the inhibition of chemotaxis/cell adhesion. It was reasoned that inhibition of cell trafficking may be an approach to prevent HIV/SIV transmission. METHODS: In this study, PTX in HEC gel was applied to the vaginal wall of monkeys that were then challenged intravaginally with SIVmac251. RESULTS: Results of these studies showed that 2 of 4 animals were resistant to infection...
December 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28833190/cardiorespiratory-effects-of-epidural-anesthesia-using-lidocaine-with-morphine-or-dexmedetomidine-in-capuchin-monkeys-sapajus-sp-undergoing-bilateral-tubal-ligation-surgery-anesthetized-with-isoflurane
#13
Débora Passos Hinojosa Schäffer, Nayone Lima Lantyer Cordeiro de Araujo, Ana Rosa Otero, Francisco de Assis Dórea Neto, Vivian Fernanda Barbosa, Emanoel Ferreira Martins Filho, Arianne Pontes Oriá
BACKGROUND: Epidural anesthesia is indicated to decrease other anesthetic requirements, prolong analgesia, and reduce side effects. In primates, its use has been scarcely described. The aim was to evaluate the cardiorespiratory effects of epidural anesthesia with lidocaine and dexmedetomidine (DEX) or morphine (MOR). METHODS: Ten female capuchin monkeys (Sapajus sp.) received epidural anesthesia with lidocaine and DEX or MOR under general anesthesia. RESULTS: There was a significant decrease in heart rate with DEX and in blood pressure in all groups, with no changes in SpO2 ...
December 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28809434/pneumatosis-intestinalis-in-an-siv-infected-rhesus-macaque-macaca-mulatta
#14
A L Johnson, K Van Rompay, J R Reader
Pneumatosis intestinalis (PI) has been described as an incidental finding in domestic animals and humans where it is associated with human immunodeficiency virus infection among other comorbidities. This report describes emphysematous changes consistent with PI in a simian immunodeficiency virus (SIV)-infected rhesus macaque (Macaca mulatta).
December 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28744866/effect-of-moderate-30-percent-global-maternal-nutrient-reduction-on-fetal-and-postnatal-baboon-phenotype
#15
Cun Li, Susan Jenkins, Vicki Mattern, Anthony G Comuzzie, Laura A Cox, Hillary F Huber, Peter W Nathanielsz
BACKGROUND: Most developmental programming studies on maternal nutrient reduction (MNR) are in altricial rodents whose maternal nutritional burden and offspring developmental trajectory differ from precocial non-human primates and humans. METHODS: Control (CTR) baboon mothers ate ad libitum; MNR mothers ate 70% global control diet in pregnancy and lactation. RESULTS: We present offspring morphometry, blood cortisol, and adrenocorticotropin (ACTH) during second half of gestation (G) and first three postnatal years...
December 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28671330/cytomegaloviral-hypophysitis-in-a-simian-immunodeficiency-virus-infected-rhesus-macaque-macacca-mulatta
#16
Melissa R Berg, Michael A Owston, Marie-Claire Gauduin, Basel T Assaf, Anne D Lewis, Edward J Dick
Rhesus macaques experimentally infected with Simian Immunodeficiency Virus (SIV) experience immunosuppression and often opportunistic infection. Among the most common opportunistic infections are rhesus cytomegalovirus (RhCMV), a ubiquitous betaherpesvirus that undergoes continuous low-level replication in immunocompetent monkeys. Upon SIV-mediated immunodeficiency, RhCMV reactivates and results in lesions in numerous organ systems including the nervous and reproductive systems. We report the first case of cytomegaloviral hypophysitis in a SIV-immunocompromised rhesus macaque...
December 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29034475/2d-4d-digit-ratio-is-not-a-biomarker-of-developmental-programming-in-baboons-papio-hamadryas-species
#17
Hillary F Huber, Cun Li, Peter W Nathanielsz
We hypothesized second-to-fourth hand digit ratio (2D:4D) is a biomarker of developmental programming in 3 baboon groups: intrauterine growth restriction (7 females, 8 males), exposure during fetal life to synthetic glucocorticoids (4 females, 5 males), and controls (66 females, 20 males). 2D:4D was similar between sexes and groups.
October 16, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29023804/apnea-induction-for-invasive-lung-function-testing-in-infant-olive-baboons-comparison-of-intravenous-propofol-versus-hyperventilation
#18
Vadim A Ivanov, Roman F Wolf, James F Papin, Michael P Anderson, Claude L Hill, Robert C Welliver
BACKGROUND: In various types of pulmonary research, pulmonary function testing (PFT) is performed to quantify the severity of lung disease. Induction of apnea and positive pressure ventilation are required for accurate PFT measurements in non-cooperative subjects. We compared two methods of apnea induction in infant olive baboons (Papio anubis). METHODS: Pulmonary function testing results were compared during apnea induced by hyperventilation (CO2 washout) vs. intravenous propofol (1 dose 10 mg/kg)...
October 12, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28972670/ultrasonographic-aspects-of-the-leontopithecus-gestation-lesson-1840-callitrichidae-primates
#19
Marcelline Santos Luz, Fabrício Delgado Vidal, Carlos Henrique Freitas Burity, Denise de Mello Bobány, Alcides Pissinatti
BACKGROUND: There is a concern about conservation of endangered species today. Among this species, the Leontopithecus (Lesson, 1840) is outstanding. Its population has been whirling reduced. So far the reproductive physiology of Leontopithecus has few studies, it is fundamental requisite to preserve this species. Obstetric sonography has become an essential method in reproductive management of primates. METHOD: This method is very helpful to detect early pregnancy and evaluate some deficiency of fetal growth...
October 3, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28972656/detection-of-toxoplasma-gondii-antibodies-in-captive-non-human-primates-in-the-amazon-region-brazil
#20
Antonio Humberto Hamad Minervino, Ana Beatriz Melles Cassinelli, Alex Junior Souza de Souza, Max Moreira Alves, Manoel do Carmo Pereira Soares, Dayana Alersa Conceição Ferreira, Washington Luiz Assunção Pereira, Solange Maria Gennari
BACKGROUND: Toxoplasma gondii infections in captive non-human primates are of interest because often they die due to severe toxoplasmosis. Thus, we aimed to evaluate samples from a serum bank to T. gondii antibodies. METHODS: Serum samples of 179 monkeys from the National Center of Primates, Brazil, were retrospective analyzed for T. gondii IgG antibodies by modified agglutination test using formalin-fixed whole parasites as antigen (cutoff 1:25). RESULTS: Among the 179 samples tested, 88 (49...
October 3, 2017: Journal of Medical Primatology
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