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Monkey ultrasonography

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https://www.readbyqxmd.com/read/27194436/ultrasound-follow-up-in-a-patient-with-intestinal-obstruction-due-to-post-traumatic-intramural-duodenal-hematoma
#1
Yukako Homma, Kazuhiro Mori, Yasuhiro Ohnishi, Keisuke Fujioka, Tomomasa Terada, Ayumi Sasaki, Takashi Nagai, Miki Inoue
We report the case of a 7-year-old girl with intestinal obstruction due to post-traumatic intramural duodenal hematoma. She had fallen from the monkey bars the day before presenting to our hospital, and was admitted with signs of abdominal pain, vomiting, and nausea. Abdominal ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) demonstrated a heterogeneous solid mass located within the duodenal wall, compressing the descending part of the duodenum. The inferior vena cava was also compressed by the mass lesion, although no associated symptoms were evident...
July 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/26884412/spontaneous-cholelithiasis-in-a-squirrel-monkey-saimiri-sciureus
#2
Mia T Lieberman, Lynn M Wachtman, Robert P Marini, Vasu Bakthavatchalu, James G Fox
A mature female squirrel monkey was noted during routine semiannual examinations to have moderate progressive weight loss. Serum chemistry panels revealed marked increases in hepatic enzyme, bilirubin, and bile salt concentrations and hypoalbuminemia. Abdominal ultrasonography revealed echogenic, shadowing debris in the gallbladder, consistent with cholelithiasis. At necropsy, marked thickening and distension of the gallbladder, cystic duct, and common bile duct was noted, and more than 50 irregularly shaped, black gallstones were removed from the biliary tract...
February 2016: Comparative Medicine
https://www.readbyqxmd.com/read/26667550/medical-management-of-leiomyomata-and-suspected-endometriosis-in-an-allen-s-swamp-monkey-allenopithecus-nigroviridus
#3
Yousuf S Jafarey, Christopher S Hanley, Ric A Berlinski, Connie Warner, Anthony Armstrong
A 13-yr-old female nulliparous Allen's swamp monkey (Allenopitchecus nigroviridis) presented with intermittent excessive vaginal bleeding, cyclical lethargy, and a history of irregular menstrual cycles. Abdominal ultrasonography revealed a subjectively thickened, irregular endometrium, multiple leiomyomata (uterine fibroids), and bilateral anechoic foci on the ovaries. Treatment was initiated with leuprolide acetate i.m. monthly for 6 mo. Recheck ultrasound at 3 mo showed a decrease in leiomyoma diameter and no evidence of active follicles on the ovaries...
December 2015: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/26659243/self-contained-image-mapping-of-placental-vasculature-in-3d-ultrasound-guided-fetoscopy
#4
Liangjing Yang, Junchen Wang, Takehiro Ando, Akihiro Kubota, Hiromasa Yamashita, Ichiro Sakuma, Toshio Chiba, Etsuko Kobayashi
BACKGROUND: Surgical navigation technology directed at fetoscopic procedures is relatively underdeveloped compared with other forms of endoscopy. The narrow fetoscopic field of views and the vast vascular network on the placenta make examination and photocoagulation treatment of twin-to-twin transfusion syndrome challenging. Though ultrasonography is used for intraoperative guidance, its navigational ability is not fully exploited. This work aims to integrate 3D ultrasound imaging and endoscopic vision seamlessly for placental vasculature mapping through a self-contained framework without external navigational devices...
September 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/26447984/effects-of-long-wavelength-lighting-on-refractive-development-in-infant-rhesus-monkeys
#5
Earl L Smith, Li-Fang Hung, Baskar Arumugam, Brien A Holden, Maureen Neitz, Jay Neitz
PURPOSE: Differences in the spectral composition of lighting between indoor and outdoor scenes may contribute to the higher prevalence of myopia in children who spend low amounts of time outdoors. Our goal was to determine whether environments dominated by long-wavelength light promote the development of myopia. METHODS: Beginning at 25 ± 2 days of age, infant monkeys were reared with long-wavelength-pass (red) filters in front of one (MRL, n = 6) or both eyes (BRL, n = 7)...
October 2015: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/26368851/neonatal-aphakia-is-associated-with-altered-levels-of-dopamine-metabolites-in-the-non-human-primate-retina
#6
P Michael Iuvone, Rashidul Haque, Alcides Fernandes, Scott R Lambert
Neonatal aphakia is associated with retardation of the axial elongation of the neonatal eye. In contrast, form deprivation increases axial elongation, an effect that has been associated with decreased retinal dopamine metabolism. The present investigation was conducted to test the hypothesis that neonatal aphakia induces an effect on the levels of retinal dopamine opposite to form deprivation. Lensectomy and vitrectomy were performed on the right eyes of rhesus monkeys at approximately 1 week of age; their left eyes were unmanipulated...
November 2015: Experimental Eye Research
https://www.readbyqxmd.com/read/25623107/-uterine-autologous-transplantation-in-cynomolgus-monkeys-a-preliminary-report-of-6-case
#7
Yifeng Wang, Ying Zhu, Ping Yu, Gaowen Chen, Baota Cai, Zhengguang Zhang, Na Liu, Xiaogang Lü, Juxiang Xiong, Lijuan Zhong, Junhua Rao
OBJECTIVE: To evaluate the surgical feasibility of uterine autologous transplantation in female cynomolgus monkeys and explore the effect of microsurgical technique. METHODS: From May 2011 to March 2014, 6 female cynomolgus monkeys, aged 7 to 12 years, were randomly divided into 2 surgical groups. In group A, gross surgeries were performed with naked eyes. In group B, uterine re-transplantation was performed under 10-time-magnifying microscopy. Anatomical data and operative durations were recorded and analyzed...
December 23, 2014: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/25587893/a-survey-of-the-european-venous-forum-on-education-and-training-in-venous-surgery-and-phlebology-in-europe
#8
K Spanos, M De Maeseneer, A Nicolaides, A D Giannoukas
AIM: Venous training in Europe is lacking a formal curriculum among various specialties related to management of venous diseases. We conducted a survey in order to have a snapshot on the actual education and training level among physicians practicing currently venous surgery and phlebology in Europe. METHODS: From April 7, 2014 to June 11, 2014 a survey was carried out using the Survey Monkey system, including 11 main questions covering all the domains of training and education in venous surgery and phlebology...
April 2015: International Angiology: a Journal of the International Union of Angiology
https://www.readbyqxmd.com/read/25324283/the-effects-of-simultaneous-dual-focus-lenses-on-refractive-development-in-infant-monkeys
#9
COMPARATIVE STUDY
Baskar Arumugam, Li-Fang Hung, Chi-Ho To, Brien Holden, Earl L Smith
PURPOSE: We investigated the effects of two simultaneously imposed, competing focal planes on refractive development in monkeys. METHODS: Starting at 3 weeks of age and continuing until 150 ± 4 days of age, rhesus monkeys were reared with binocular dual-focus spectacle lenses. The treatment lenses had central 2-mm zones of zero power and concentric annular zones with alternating powers of +3.0 diopter [D] and plano (pL or 0 D) (n = 7; +3D/pL) or -3.0 D and plano (n = 7; -3D/pL)...
November 2014: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/25263644/vision-based-endoscope-tracking-for-3d-ultrasound-image-guided-surgical-navigation
#10
L Yang, J Wang, T Ando, A Kubota, H Yamashita, I Sakuma, T Chiba, E Kobayashi
This work introduces a self-contained framework for endoscopic camera tracking by combining 3D ultrasonography with endoscopy. The approach can be readily incorporated into surgical workflows without installing external tracking devices. By fusing the ultrasound-constructed scene geometry with endoscopic vision, this integrated approach addresses issues related to initialization, scale ambiguity, and interest point inadequacy that may be faced by conventional vision-based approaches when applied to fetoscopic procedures...
March 2015: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/24781425/a-prostaglandin-e2-receptor-antagonist-prevents-pregnancies-during-a-preclinical-contraceptive-trial-with-female-macaques
#11
M C Peluffo, J Stanley, N Braeuer, A Rotgeri, K-H Fritzemeier, U Fuhrmann, B Buchmann, T Adevai, M J Murphy, M B Zelinski, B Lindenthal, J D Hennebold, R L Stouffer
STUDY QUESTION: Can administration of a prostaglandin (PG) E2 receptor 2 (PTGER2) antagonist prevent pregnancy in adult female monkeys by blocking periovulatory events in the follicle without altering menstrual cyclicity or general health? SUMMARY ANSWER: This is the first study to demonstrate that a PTGER2 antagonist can serve as an effective non-hormonal contraceptive in primates. WHAT IS KNOWN ALREADY: The requirement for PGE2 in ovulation and the release of an oocyte surrounded by expanded cumulus cells (cumulus-oocyte expansion; C-OE) was established through the generation of PTGS2 and PTGER2 null-mutant mice...
July 2014: Human Reproduction
https://www.readbyqxmd.com/read/24694889/bedside-hip-ultrasonography-in-the-pediatric-emergency-department-a-tool-to-guide-management-in-patients-presenting-with-limp
#12
Julia Deanehan, Rachel Gallagher, Rebecca Vieira, Jason Levy
We present a case of a 3-year-old girl brought to the emergency department for evaluation of limp after falling off the monkey bars 1 day prior. X-rays of the entire left lower extremity were normal with no evidence of fracture, dislocation, or effusion. Point-of-care ultrasound of the left hip demonstrated a hip effusion, which prompted further imaging, ultimately revealing an occult fracture of the left proximal femoral metaphysis. This case demonstrates the ability of point-of-care ultrasound to guide the management of patients presenting to the pediatric emergency department with musculoskeletal complaints...
April 2014: Pediatric Emergency Care
https://www.readbyqxmd.com/read/24672831/surgical-correction-of-an-arteriovenous-fistula-in-a-ring-tailed-lemur-lemur-catta
#13
Nancy C Boedeker, Philip Guzzetta, Steven L Rosenthal, Luis R Padilla, Suzan Murray, Kurt Newman
A 10-y-old ovariohysterectomized ring-tailed lemur (Lemur catta) was presented for exacerbation of respiratory signs. The lemur had a history of multiple examinations for various problems, including traumatic lacerations and recurrent perivulvar dermatitis. Examination revealed abnormal lung sounds and a femoral arteriovenous fistula with a palpable thrill and auscultable bruit in the right inguinal area. A diagnosis of congestive heart failure was made on the basis of exam findings, radiography, abdominal ultrasonography, and echocardiography...
February 2014: Comparative Medicine
https://www.readbyqxmd.com/read/24612366/uterus-allotransplantation-in-cynomolgus-macaque-a-preliminary-experience-with-non-human-primate-models
#14
COMPARATIVE STUDY
Iori Kisu, Makoto Mihara, Kouji Banno, Hisako Hara, Yohei Masugi, Jun Araki, Takuya Iida, Yohei Yamada, Yojiro Kato, Takashi Shiina, Nobuhiko Suganuma, Daisuke Aoki
AIM: Uterine transplantation (UTx) is a potential option for child-bearing in women with uterine infertility. Recovery of uterine function after allogeneic UTx in non-human primates has not been reported. The objective of this study is to establish the functional uterine transplant model in non-human primates. METHODS: Uteri of two cynomolgus monkeys were simultaneously removed, cooled at 4°C and perfused with heparin saline. The uteri were interchanged with each other and then orthotopically transplanted...
April 2014: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/24576875/the-effects-of-monochromatic-illumination-on-early-eye-development-in-rhesus-monkeys
#15
Rui Liu, Min Hu, Ji C He, Xing-Tao Zhou, Jin-Hui Dai, Xiao-Mei Qu, Hong Liu, Ren-Yuan Chu
PURPOSE: Influence of longitudinal chromatic aberration (LCA) on emmetropization during early eye development has not been studied in primates. We investigated the effects of quasi-monochromatic lighting on refractive development and eye growth in rhesus monkeys. METHODS: Infant rhesus monkeys were raised under one of three lighting conditions for 51 weeks: quasi-monochromatic blue light (peak 455 nm), red light (peak 610 nm), and white light (color temperature 5000 K)...
March 2014: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/24505248/real-time-transcranial-monitoring-of-safe-blood-brain-barrier-opening-in-non-human-primates
#16
Fabrice Marquet, Tobias Teichert, Shih-Ying Wu, Yao-Sheng Tung, Matthew Downs, Shutao Wang, Cherry Chen, Vincent Ferrera, Elisa E Konofagou
The delivery of drugs to specific neural targets faces two fundamental problems: (1) most drugs do not cross the blood-brain barrier, and (2) those that do, spread to the entire brain. To date, there exists only one non-invasive methodology with the potential to solve these problems: selective blood-brain barrier (BBB) opening using micro-bubble enhanced focused ultrasound. We have recently developed a single-element 500-kHz spherical transducer ultrasound setup for targeted BBB opening in the non-human primate that does not require simultaneous MRI monitoring...
2014: PloS One
https://www.readbyqxmd.com/read/24462157/detection-of-hepatic-hemodynamics-in-normal-rhesus-monkeys-using-high-frequency-ultrasound
#17
Hong Wang, Pengfei Han, Xiaorong Sun, Jiandan Cai, Xin Fan, Yan Luo
The rhesus monkey liver disease model provides useful information for hepatic research, as studies of hepatic hemodynamics in humans are rare. A 3-9 MHz high-frequency linear transducer (iU22, Philips Medical Systems, Royal Philips Electronics, The Netherlands) was used to obtain ultrasonograms of the livers of 28 normal rhesus monkeys (16 males, 12 females). Diameters of the portal vein and proper hepatic artery; maximum velocity of the portal vein; and peak-systolic and end-diastolic velocity and resistive index of the proper hepatic artery were also assessed...
April 2014: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/24371104/use-of-contrast-enhanced-sonography-to-investigate-intraneural-vascularity-in-a-cohort-of-macaca-fascicularis-with-suspected-median-mononeuropathy
#18
Kevin D Evans, Kevin R Volz, Rachel L Pargeon, Larry T Fout, John Buford, Shawn C Roll
OBJECTIVES: The purpose of this study was to provide clinical evidence of the use of contrast-enhanced sonography in detecting and quantifying changes in intraneural vascularity due to median mononeuropathy. METHODS: Five Macaca fascicularis monkeys were exposed to 20 weeks of repetitive work to increase their risk of developing median mononeuropathy. Contrast-enhanced sonograms were obtained in 30-second increments for 7 minutes while a contrast agent was being delivered...
January 2014: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/24278629/milk-transfer-and-toxicokinetics-of-valproic-acid-in-lactating-cynomolgus-monkeys
#19
Jong-Hwa Lee, Wook-Joon Yu, Eun Ju Jeong, Moon-Koo Chung
Studies on milk transfer of drugs in non-human primates (NHPs) are among the crucial components in the assessment of peri- and postnatal toxicity because of the similarity between NHPs and humans. To evaluate the milk transfer of valproic acid (VPA) in NHPs, the toxicokinetics of VPA, an antiepileptic drug, were studied in pregnant cynomolgus monkeys. VPA was administered once daily to pregnant cynomolgus monkeys at doses of 0, 30, 90, and 270 mg/kg by oral gavage from Day 100 of gestation (GD 100) to Day 31 of lactation (LD 31)...
March 2013: Toxicological Research
https://www.readbyqxmd.com/read/24278535/placenta-transfer-and-toxicokinetics-of-valproic-acid-in-pregnant-cynomolgus-monkeys
#20
Eun Ju Jeong, Wook-Joon Yu, Choong-Yong Kim, Moon-Koo Chung
Placenta transfer study in non-human primate (NHP) is one of the crucial components in the assessment of developmental toxicity because of the similarity between NHP and humans. To establish the method to determine placenta transfer in non-human primate, toxicokinetics of valproic acid (VPA) , a drug used to treat epilepsy in pregnant women, were determined in pregnant cynomolgus monkeys. After mating, pregnancy-proven females were daily administered with VPA at dose levels of 0, 20, 60 and 180 mg/kg by oral route during the organogenesis period from gestation day (GD) 20 to 50...
December 2010: Toxicological Research
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