著者

Reeko SATO Naohiro UCHIDA Yuka KAWANA Minako TOZUKA Saori KOBAYASHI Nana HANYU Yoshinobu KONNO Aiko IGUCHI Yayoi YAMASAKI Konomi KURAMOCHI Masahiro YAMASAKI

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.18-0309, (Released:2019-06-03)

被引用文献数

11

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Feline polycystic kidney disease (PKD), an inherited autosomal dominant disease, has been reported to occur mostly in Persian or Persian related cats, and to be associated with a mutation from C to A at position 10063 in exon 29 of the feline PKD1 gene (PKD1 mutation). Many clinical cases have been recognized in Japan, but the mutation rate in cats has not been reported. The objective of this study was to determine epidemiological characteristics and clinical features in cats with the PKD1 mutation. Referring veterinarians sent blood samples of 377 cats for the PKD1 gene evaluation. The blood samples were from 159 cats with renal cysts confirmed by ultrasonography, 60 cats without renal cysts, and 158 cats that did not undergo ultrasonography. In total, 150 cats carried the PKD1 mutation and the signalment, site and number of renal cysts, and results of blood test were evaluated in cats with the PKD1 mutation. The breeds with the highest rate of the PKD1 mutation were Persian (46%), Scottish Fold (54%) and American Shorthair cats (47%). However, mixed breed cats also showed high rates of the PKD1 mutation. Of cats with the mutation, the incidence of high plasma creatinine (≥1.6 mg/dl) was greater in cats ≥3 years old, although a few cats ≥9 years of age had low plasma creatinine (<1.6 mg/dl). The coincidence of renal and hepatic cysts was 12.6%, with the high prevalence in Persian cats (31%).

著者

Yayoi OTSUKA-YAMASAKI Osamu INANAMI Haruka SHINO Reeko SATO Masahiro YAMASAKI

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.20-0390, (Released:2020-12-21)

被引用文献数

2

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Hereditary methemoglobinemia associated with nicotinamide adenine dinucleotide-cytochrome b5 reductase (b5R) deficiency is a rare autosomal recessive disorder in animals. Recently, nonsynonymous b5R gene (CYB5R3) variants have been reported to be associated with canine and feline hereditary methemoglobinemia. However, the underlying molecular mechanisms of canine and feline methemoglobinemia caused by these nonsynonymous variants have not yet been reported. Previously, we reported a Pomeranian dog family with hereditary methemoglobinemia, carrying CYB5R3 mutation of an A>C transition at codon 194 in exon 7, replacing an isoleucine residue with leucine (p.Ile194Leu). In this study, we investigated the enzymatic and structural properties of the soluble form of wild-type and Ile194Leu canine b5Rs to characterize the effects of this missense mutation. Our results showed that the kinetic properties of the mutant enzyme were not affected by this amino acid substitution. The secondary structure of the wild-type and Ile194Leu b5Rs detected by circular dichroism showed a similar pattern. However, the mutant enzyme exhibited decreased heat stability and increased susceptibility to trypsin hydrolysis. Moreover, the thermostability and unfolding measurements indicated that the mutant enzyme was more sensitive to temperature-dependent denaturation than the wild-type b5R. We conclude from these results that unstable mutant enzyme properties with normal enzymatic activity would be associated with hereditary methemoglobinemia in the Pomeranian dog family.

著者

Misa MASUDA Yayoi OTSUKA-YAMASAKI Nobuyuki SHIRANAGA Aiko IGUCHI Naohiro UCHIDA Reeko SATO Masahiro YAMASAKI

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.19-0280, (Released:2019-09-12)

被引用文献数

8

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Babesia rossi infection has been reported to be associated with the high prevalence of pancreatitis in dogs. In this study, we retrospectively investigated whether pancreatitis occurs in B. gibsoni-infected dogs. The clinical manifestations, and hematological and serum biochemical examination results, including canine pancreatic-specific lipase (cPL), in 20 B. gibsoni-infected dogs were analyzed. The cPL concentration exceeded 400 μg/l in only 2 dogs, and they were suspected of having pancreatitis. Although the cPL concentration did not correlate with the degree of anemia or the level of parasitemia, it correlated with the band neutrophil count, platelet count, and blood urea nitrogen (BUN) level. Our study suggested that the prevalence of pancreatitis is lower among B. gibsoni-infected dogs than B. rossi-infected dogs.

著者

Masahiko TAKENAKA Kazuaki TAKASHIMA Hajimu KURUMATANI Nobutaka IDA Reeko SATO Yoshihisa YAMANE

出版者

動物臨床医学会

雑誌

動物臨床医学 (ISSN:13446991)

巻号頁・発行日

vol.20, no.4, pp.131-139, 2011-12-31 (Released:2012-12-18)

参考文献数

30

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Objective : Since the sensitivity to prostacyclin differs widely depending on the animal species, it is essential to investigate the dose setting from the safety point of view before using beraprost (BPS) in diseased cats.Design : One week multiple administration toxicity study of BPS (10, 30, 70, 100 μg/kg, twice a day) compared with vehicle as control.Procedure : BPS group (n=6) at 10, 30, 70 and 100 μg/kg and vehicle group (n=5) were administered to healthy cats twice a day for 7 days. Both in BPS and vehicle groups, cessation period of the drug was provided 2 weeks between each doses of BPS. In addition hemodynamic parameters were also noted at 0.5 hour before initial administration on the first day and at 1 hour after final administration on the 7th day of each dose of BPS and vehicle.Results : Though BPS from 30 μg/kg upward transiently and dose-dependently increased the heart rate but had no influence on the blood pressure. Compared with the vehicle group, serum creatinine slightly but significantly decreased at 70 and 100 μg/kg and this decrease was also significant against the pre-administration value at the same dose. The influence of BPS on the blood parameters was nil or negligible, if any. Diarrhea were sporadically noted at 70 μg/kg, and mild and transient vomiting and sedation occurred at 100 μg/kg. However, each symptom soonerly disappeared without treatment.Conclusion : The pharmacological action and types of adverse effects of BPS in the cats were almost similar to those observed in other animals and the repeated oral administration of BPS can be safely conducted in cats at least up to 30 μg/kg twice a day.

著者

Reeko SATO Takuma AOKI Saori KOBAYASHI Naohiro UCHIDA Shunsuke SIMAMURA Masahiro YAMASAKI

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.16-0025, (Released:2016-09-22)

被引用文献数

4

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Propofol (2,6-diisopropylphenol), being used as an intravenous sedative and anesthetic agent, influences not only upon nervous system but also for host inflammatory response through modulating neutrophil functions. This study is designed to evaluate the modulating effects of propofol and its lipid carrier administration at clinically relevant rate on canine neutrophil functions. Clinically healthy beagle dogs were received propofol (8.8 mg/kg) from cephalic vein and maintained with propofol dropping infusion (26.4 mg/kg/hr). Blood samples were collected from the dogs before infusion and 30 min after the start of propofol administration, and neutrophil functions were evaluated. The dogs were also administered lipid carrier, and neutrophil functions were evaluated in the same manner as propofol administration. Peripheral white blood cell and neutrophil counts decreased after the propofol or lipid carrier administration. The administration of propofol or lipid carrier significantly reduced neutrophil adherence ability. The superoxide production of neutrophils was measured by luminol-dependent chemiluminescence response using with opsonized zymosan. Peak height of neutrophil chemiluminescence curve was reduced by propofol and lipid carrier administration, on the contrary, peak time of neutrophil chemiluminescence curve was delayed. Administration of propofol or lipid carrier also reduced neutrophil adherence ability to nylon fibers. In the present study, we showed the modulating effects of propofol and its lipid carrier on canine neutrophil functions. However, there was no significant difference in the modulating effects between propofol group and lipid carrier group. Therefore, the modulating effects observed here were deeply concerned in lipid carrier administration.

著者

Masahiro YAMASAKI Yoshihiro TSUBOI Yusuke TANIYAMA Naohiro UCHIDA Reeko SATO Kensuke NAKAMURA Hiroshi OHTA Mitsuyoshi TAKIGUCHI

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.16-0027, (Released:2016-04-28)

被引用文献数

3

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The Babesia gibsoni heat shock protein 90 (BgHSP90) gene was cloned and sequenced. The length of the gene was 2,610 bp with two introns. This gene was amplified from cDNA corresponding to full length cording sequence (CDS) with an open reading frame of 2,148 bp. A phylogenetic analysis of the CDS of HSP90 gene showed that B. gibsoni was most closely related to B. bovis and Babesia sp. BQ1/Lintan and lies within a phylogenetic cluster of protozoa. Moreover, mRNA transcription profile for BgHSP90 exposed to high temperature were examined by quantitative real-time reverse transcription-polymerase chain reaction. BgHSP90 levels was elevated when the parasites were incubated at 43°C for 1 hr.

著者

Shunsuke SHIMAMURA Ken KIMURA Masaaki KATAYAMA Tadahisa MASHITA Kenichi MAEDA Saori KOBAYASHI Reeko SATO Jun YASUDA

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.13-0541, (Released:2014-08-21)

被引用文献数

4

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This study evaluated the number and function of neutrophils during 3 hr of hemodialysis in healthy dogs under anesthesia. Isolated neutrophils were used to assess neutrophil adhesion, phagocytosis and the oxidative burst. At 0.5 and 3 hr after the start of hemodialysis treatment, there was a decrease in neutrophil number. The phagocytic ability of neutrophils was decreased 3 hr after the start of hemodialysis. In conclusion, this study demonstrated that hemodialysis reduces the number and phagocytic ability of neutrophils during treatment. However, these changes recover within 24 hr of hemodialysis.

著者

Yasunori SATO Shunsuke SHIMAMURA Tadahisa MASHITA Saori KOBAYASHI Yasuhiko OKAMURA Masaaki KATAYAMA Hiroaki KAMISHINA Reeko SATO Yuji UZUKA Jun YASUDA

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.75, no.7, pp.949-953, 2013 (Released:2013-07-31)

参考文献数

17

被引用文献数

5 22

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In humans, increased levels of GFAP in the CSF and blood have been reported with various neural diseases. However, there has been no study describing the usefulness of GFAP in the blood for disease of the spinal cord in dogs. The aim of this study was to describe the utility of GFAP in serum for a diagnosis of progressive myelomalacia. Fifty-six dogs with acute thoracolumbar IVDD diagnosed by computed tomography with myelography or MRI were included. Serum specimens were collected at initial presentation from all cases and at follow-up examinations from some cases. Serum samples were assayed for GFAP concentrations using a commercially available GFAP ELISA Kit. Progressive myelomalacia was the final diagnosis in 8/51 cases (15.6%). Eight dogs had clinical signs suggestive of progressive myelomalacia, of which 6 were positive and 2 were negative by GFAP. Seven dogs had a detectable level of serum GFAP, of which 6 had the onset of progressive myelomalacia. The sensitivity and specificity of the GFAP to progressive myelomalacia were 75% and 97.7%, respectively. The results suggest the utility of GFAP in serum in the diagnosis of progressive myelomalacia.

著者

Yasunori SATO Shunsuke SHIMAMURA Tadahisa MASHITA Saori KOBAYASHI Yasuhiko OKAMURA Masaaki KATAYAMA Hiroaki KAMISHINA Reeko SATO Yuji UZUKA Jun YASUDA

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.12-0483, (Released:2013-03-08)

被引用文献数

5 22

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In humans, increased levels of GFAP in the CSF and blood have been reported with various neural diseases. However there has been no study describing the usefulness of GFAP in the blood for disease of the spinal cord in dogs. To describe the utility of GFAP in serum for a diagnosis of progressive myelomalacia. Fifty-six dogs with acute thoracolumbar IVDD diagnosed by computed tomography with myelography or MRI were included. Serum specimens were collected at initial presentation from all cases and at follow-up examinations from some cases. Serum samples were assayed for GFAP concentrations using a commercially available GFAP ELISA KIT. Progressive myelomalacia was the final diagnosis in 8/52 (15.3%). Eight dogs had clinical signs suggestive of progressive myelomalacia, of which 6 were positive and 2 were negative by GFAP. Seven dogs had a detectable level of serum GFAP, of which 6 had the onset of progressive myelomalacia. The sensitivity and specificity of the GFAP to progressive myelomalacia were 75 and 97.7%, respectively. The results suggest the utility of GFAP in serum in the diagnosis of progressive myelomalacia.

著者

Reeko SATO Saori KOBAYASHI Yuya ABE Hiroaki KAMISHINA Shinichi ODA Jun YASUDA Juso SASAKI

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.74, no.9, pp.1177-1183, 2012 (Released:2012-10-01)

参考文献数

24

被引用文献数

1

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This study reported detailed clinical effects of bovine lactoferrin on 2 canine littermates (1 female and 1 male) with familial neutrophil dysfunction and an investigation of their genetic background. Clinical signs caused by severe upper respiratory bacterial infections were observed in these dogs. Oral administration of bovine lactoferrin for a long duration improved their clinical signs (severe uveitis in the female dog and coughing from pneumonia in the male dog). Their backcross dogs that have the same father didn’t show clinical signs of bacterial infection. Neutrophil function tests revealed that the backcross dogs didn’t have any disorders. It is likely that abnormal clinical signs are associated with neutrophil dysfunction in the colony, and the mother dog of these cases might be the genetic carrier of this dysfunction.

著者

Reeko SATO Saori KOBAYASHI Yuya ABE Hiroaki KAMISHINA Shinichi Oda Jun YASUDA Juso SASAKI

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.1204140815, (Released:2012-04-24)

被引用文献数

1

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This study reported detailed clinical effects of bovine lactoferrin on two canine littermates (1 female and 1 male) with familial neutrophil dysfunction and an investigation of their genetic background. Clinical signs caused by severe upper respiratory bacterial infections were observed in these dogs. Oral administration of bovine lactoferrin for a long duration improved their clinical signs (severe uveitis in the female dog and coughing from pneumonia in the male dog). Their backcross dogs that have the same father didn't show clinical signs of bacterial infection. Neutrophil function tests revealed that the backcross dogs didn't have any disorders. It is likely that abnormal clinical signs are associated with neutrophil dysfunction in the colony and the mother dog of these cases might be the genetic carrier of this dysfunction.