Plasma Atrial Natriuretic Peptide in Healthy Calves and Calves with Congenital Heart Disease     

Y. Hori  M. Kikuchi  A. Nakagawa  T. Yonezawa  H. Miura  Y. Ohnami 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2009,23(3):653-656

Background: The basic and clinical implications of evaluating plasma atrial natriuretic peptide (ANP) concentration in calves are unknown.
Objective: To investigate the relationship between the plasma ANP concentration and left ventricular end-diastolic pressure (LVEDP) in healthy calves subjected to volume overload (Study 1), and to compare the plasma ANP concentration in calves with or without heart disease (Study 2).
Animals: Six healthy calves were used in Study 1; disease calves and sick calves with (n = 9) and without congenital heart disease (CHD) (n = 9) were used in Study 2.
Methods: In Study 1, LVEDP in anesthetized calves was manipulated by IV administration of acetated Ringer's solution (rate of 100 mL/kg/h for 20 minutes) and furosemide. In Study 2, disease calves were identified by blood examination and echocardiography or pathological examination. The plasma ANP concentration was determined by a chemiluminescence enzyme immunoassay for human α-ANP.
Results: In Study 1, preloading significantly increased the plasma ANP concentration (36 ± 20–185 ± 156, P < .01) and LVEDP (−11 ± 7–2 ± 12, P < .01) from the baseline. Furthermore, plasma ANP concentrations were strongly correlated with LVEDP ( r = 0.61). In Study 2, the plasma ANP concentration was significantly higher in the calves with CHD than in the calves without heart disease (220 [67–970] versus 31 [10–86]; mean [range], P < .001).
Conclusions and Clinical Importance: Measurement of plasma ANP concentrations in calves can provide additional information useful for predicting hemodynamic abnormalities.  相似文献   

Prolonged Duration of Fertility of Dog Ova     

T Tsutsui  F Takahashi  T Hori  E Kawakami  PW Concannon 《Reproduction in domestic animals》2009,44(S2):230-233

The fertile period for natural mating in dogs extends from before ovulation until day 5 post ovulation (PO) and involves a delay in oocyte maturation until 2–3 days PO and viability of secondary oocytes for 48–60 h or more. Spermatozoa do not enter the uterus after vaginal insemination in late oestrus. Cervical closure appears to occur on average 5 days PO, but conception may occur following intrauterine artificial insemination (IUAI) up to 8 days PO. Therefore, the present study was conducted to clarify the duration of fertility of canine ova. Using IUAI at 6, 7, 8 and 9 days PO (n = 5 bitches each) conception rates were 100%, 71.4%, 37.5% and 0%, respectively, with an average litter resorption rate of 30.8%, and with mean litter sizes and times to delivery PO being 4.3 ± 1.6 and 64.3 ± 0.3 days, 4.0 ± 1.4 and 66.3 ± 0.4 days, and 2.5 and 68 days for IUAI at 6, 7 and 8 days, respectively. The high pregnancy rates with IUAI at 6 and 7 days PO confirm that many canine oocytes are fertile at 4–5 days after maturation. The high rate of resorption was presumably because of aging of ova or asynchrony between embryonic development and the intrauterine environment.  相似文献   

Up-regulation of NOD1 and NOD2 through TLR4 and TNF-alpha in LPS-treated murine macrophages     

Takahashi Y  Isuzugawa K  Murase Y  Imai M  Yamamoto S  Iizuka M  Akira S  Bahr GM  Momotani E  Hori M  Ozaki H  Imakawa K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2006,68(5):471-478

NOD1 (Card4) and NOD2 (Card15) are thought to be responsible for cytoplasmic defense against bacterial entry. To gain further knowledge about how their expressions are regulated in murine macrophages, we investigated the expression of NOD1 and NOD2 mRNAs after stimulation with various endotoxins, lipopolysaccharide, lipoteichoic acid and peptidoglycan. In macrophage RAW264.7 cells, the first and second rises in NOD1 and NOD2 mRNAs were observed at 2 hr and at 8-12 hr after endotoxin treatment. Increases in NOD1 and NOD2 mRNAs at 2 hr in lipopolysaccharide-treated RAW264.7 cells were reduced with the use of NF-kappaB inhibitor, caffeic acid phenethyl ester. In RAW264.7 cells, lipopolysaccharide-induced increases in NOD1 and NOD2 mRNAs were inhibited with anti-TLR4 antibody, and partially reduced in peritoneal macrophages obtained from TLR4-deficient mice. Furthermore, NOD1 and NOD2 mRNA expressions in RAW264.7 cells were increased by the treatment with proinflammatory cytokines, tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1beta), or IL-6. In TNF-alpha deficient macrophages, the expression of NOD molecules was minimal at 12 hr, and the second rise in NOD mRNA seen in lipopolysaccharide-treated RAW264.7 cells was inhibited with anti-TNF-alpha, but not with anti-IL-1beta or anti-IL-6 antibody. These observations suggest that immediate response of NODs to endotoxins could result from NF-kappaB activation via TLR signaling, whereas the second rise in NOD mRNAs might have resulted from TNF-alpha production possibly through NF-kappaB, TLR, and/or NOD signalings.  相似文献   

A trial of intrauterine insemination using a fiberscope in the giant panda (Ailuropoda melanoleuca)     

Hori T  Hashizaki F  Narushima E  Komiya T  Orima H  Tsutsui T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2006,68(9):987-990

An intrauterine insemination technique using a fiberscope was investigated in the giant panda. A septal wall was present about 5 cm from the vulva, the external urethral orifice was present in the ventral region, and the entrance (pseudocervix) to the vagina was present in the dorsal region. The uterovaginal region protruded in the dorsal region about 15 cm from the pseudocervix. The external uterine orifice was present in the uterovaginal region, revealing that intrauterine insemination can be easily performed. This technique may greatly contribute to artificial reproduction of the giant panda.  相似文献   

Canine distemper virus induces apoptosis through caspase-3 and -8 activation in vero cells     

Kajita M  Katayama H  Murata T  Kai C  Hori M  Ozaki H 《Journal of veterinary medicine. B, Infectious diseases and veterinary public health》2006,53(6):273-277

  相似文献   

Treatment of prostatic abscesses by aspiration of the purulent matter and injection of tea tree oil into the cavities in dogs     

Kawakami E  Washizu M  Hirano T  Sakuma M  Takano M  Hori T  Tsutsui T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2006,68(11):1215-1217

Ultrasonography-guided transabdominal needle aspiration was carried out to remove 3 to 14 ml of purulent matter from the cavities of prostatic abscesses in 6 dogs, and the same volume of tea tree oil was injected into the cavities to treat the abscesses. The same treatment was repeated 3 weeks later in 4 dogs, and subsequent disappearance of the purulent matter in the cavities and a marked reduction in the volume of the cavities were observed. These findings indicate that the treatment of prostatic abscesses by aspiration of the purulent matter and injection of tea tree oil into the cavities is very effective in dogs.  相似文献   

Saccharification of cellulose by dry pyrolysis     

Gu-Joong Kwon  Shigenori Kuga  Keko Hori  Mitsuyoshi Yatagai  Keisuke Ando  Nobuaki Hattori 《Journal of Wood Science》2006,52(5):461-465

Pyrolysis of cellulose was studied for the purpose of practical production of 1,6-anhydro-β-D-glucopyranoside (levoglucosan, LG). To minimize secondary degradation of levoglucosan, two methods were examined: (1) conductive heating by glass bottle, and (2) radiation heating from the surface by CO₂ laser beam, both under vacuum and in a nitrogen atmosphere. Glass-bottle pyrolysis under vacuum gave levoglucosan yield of 50%–55% in the optimum temperature range of 350°–410°C, where placing the cold trap in the vicinity of heated area was effective in improving the yield. In contrast, glass-bottle pyrolysis under nitrogen gave low yields of 17%–20%, probably due to slower diffusion of pyrolysis product from hot region. The CO₂ laser pyrolysis under vacuum gave the product as aerosol (white smoke), causing difficulty in recovery of the product, and the maximum yield was 5%–17%. In this case the treatment under nitrogen flow was effective for recovery of aerosol, and the maximum yield reached approximately 25%.  相似文献   

Quantitative trait loci for whiteness of cooked rice detected in improved rice cultivars in Hokkaido     

Hiroshi Shinada  Toshio Yamamoto  Eiji Yamamoto  Kiyosumi Hori  Yuji Hirayama  Toshihiko Maekawa  Hitoshi Kiuchi  Hirokazu Sato  Takashi Sato 《Breeding Science》2015,65(3):201-207

Improving the eating quality of cooked rice has been one of the most important objectives in rice breeding programs. Eating quality of cooked rice is a complex trait including several components, such as external appearance, taste, aroma, and texture. Therefore, dissection of these components followed by marker-assisted selection of detected QTL(s) may be a useful approach for achieving desirable eating quality in rice breeding. Whiteness of cooked rice (WCR) is an important factor related to the external appearance of cooked rice. WCR is known to be associated with the amylose and protein contents of the endosperm. However, the genetic basis of WCR remains unclear. In this study, we evaluated phenotypic variation in WCR among recently developed rice cultivars from Hokkaido, Japan. Then, we developed doubled haploid lines (DHLs) derived from a cross between two cultivars from Hokkaido, Joiku No. 462 (high WCR) and Jokei06214 (low WCR). Using the DHLs, we detected two QTLs for WCR, qWCR3 and qWCR11, on chromosomes 3 and 11, respectively. We also examined the dosage effect of the two QTLs based on both the categorized segregants in the DHLs and the relationship between the WCR phenotype and inheritance around the QTL regions in cultivars from Hokkaido.  相似文献   

Surgical repair of a complete endocardial cushion defect in a dog     

Yamano S  Uechi M  Tanaka K  Hori Y  Ebisawa T  Harada K  Mizukoshi T 《Veterinary surgery : VS》2011,40(4):408-412

Objective: To describe surgical repair of a complete endocardial cushion defect (ECD) in a dog. Study Design: Clinical report. Animal: A 5‐month‐old, 9.2 kg male Shetland sheepdog. Methods: Echocardiographic examination revealed an ostium primum atrial septal defect (ASD), an inlet ventricular septal defect (VSD), mitral regurgitation (MR) and tricuspid regurgitation (TR), and a complete ECD was diagnosed. Surgical correction was performed using cardiopulmonary bypass (CPB) via right atriotomy. A polytetrafluoroethylene (PTFE) patch was secured along the margin of the inlet VSD using simple continuous suture, then the cleft in the septal mitral leaflet was sutured. Similarly, the cleft in the septal tricuspid leaflets was sutured. To complete inlet VSD closure, the VSD patch was secured to these sutured leaflets by simple continuous suture. Another PTFE patch was used to close the ostium primum ASD. Result: After surgery, MR, TR, and interventricular shunting were decreased. The dog was alive 6 years and 5 months after the surgery with no evidence of an interventricular shunt, TR, or other clinical signs. Conclusions: Complete ECD in a dog was corrected using a 2‐patch technique under CPB.  相似文献   

Tryptophan deficiency in rabbit reticulocytes: polyribosomes during interrupted growth of hemoglobin chains   总被引：9，自引：0，他引：9  

M Hori  J M Fisher  M Rabinovitz 《Science (New York, N.Y.)》1967,155(758):83-84

Of several amino acids essential for optimum hemoglobin synthesis by the rabbit reticulocyte, only omission of tryptophan results in polyribosome disaggregation. This disaggregation is prevented by the omission of both tryptophan and an amino acid that is relatively more essential than tryptophan for hemoglobin synthesis. Since tryptophan is located only near the amino-terminal ends of both chains of rabbit globin, the results indicate that single ribosomes and those in polyribosomes are in a dynamic state in the intact cell.  相似文献