• Title/Summary/Keyword: Laboratory Medicine

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Oral Fluralaner Treatment in a Dog with Desperate Demodicosis: A Case Report

  • Nam, Hyeyeon;Yun, Taesik;Koo, Yunhoi;Chae, Yeon;Lee, Dohee;Park, Jooyoung;Choi, Yujin;Kim, Hakhyun;Yang, Mhan-Pyo;Kang, Byeong-Teck
    • Journal of Veterinary Clinics
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    • v.38 no.4
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    • pp.169-173
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    • 2021
  • A 10-year-old castrated male Shih-tzu dog presented with a history of generalized demodicosis, refractory to conventional therapy with ivermectin and amitraz for a year. The patient was also diagnosed with concurrent deep pyoderma, Malassezia dermatitis, and otitis externa. Treatment with amoxicillin-clavulanate, antifungal drugs (itraconazole, miconazole), and milbemycin oxime resulted in a good response for 90 days. Approximately 4 months later, the first relapse of demodicosis occurred and the miticidal therapy was changed to ivermectin. Additional diagnostic tests were performed to investigate an underlying cause for the recurrence of demodicosis, and endocrinopathies and allergic dermatitis were excluded based on the results. Although ivermectin therapy was sustained for 440 days, a second relapse occurred and amitraz baths were added to the therapy. Despite this therapy, the demodicosis persisted, and the miticidal therapy was changed to oral fluralaner, which led to rapid resolution. Demodicosis did not recur again before death approximately 920 days after administration of oral fluralaner. This case report describes the complete resolution of refractory demodicosis using oral fluralaner in a dog.

Major ginsenosides from Panax ginseng promote aerobic cellular respiration and SIRT1-mediated mitochondrial biosynthesis in cardiomyocytes and neurons

  • Huang, Qingxia;Lou, Tingting;Lu, Jing;Wang, Manying;Chen, Xuenan;Xue, Linyuan;Tang, Xiaolei;Qi, Wenxiu;Zhang, Zepeng;Su, Hang;Jin, Wenqi;Jing, Chenxu;Zhao, Daqing;Sun, Liwei;Li, Xiangyan
    • Journal of Ginseng Research
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    • v.46 no.6
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    • pp.759-770
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    • 2022
  • Background: Aerobic cellular respiration provides chemical energy, adenosine triphosphate (ATP), to maintain multiple cellular functions. Sirtuin 1 (SIRT1) can deacetylate peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α) to promote mitochondrial biosynthesis. Targeting energy metabolism is a potential strategy for the prevention and treatment of various diseases, such as cardiac and neurological disorders. Ginsenosides, one of the major bioactive constituents of Panax ginseng, have been extensively used due to their diverse beneficial effects on healthy subjects and patients with different diseases. However, the underlying molecular mechanisms of total ginsenosides (GS) on energy metabolism remain unclear. Methods: In this study, oxygen consumption rate, ATP production, mitochondrial biosynthesis, glucose metabolism, and SIRT1-PGC-1α pathways in untreated and GS-treated different cells, fly, and mouse models were investigated. Results: GS pretreatment enhanced mitochondrial respiration capacity and ATP production in aerobic respiration-dominated cardiomyocytes and neurons, and promoted tricarboxylic acid metabolism in cardiomyocytes. Moreover, GS clearly enhanced NAD+-dependent SIRT1 activation to increase mitochondrial biosynthesis in cardiomyocytes and neurons, which was completely abrogated by nicotinamide. Importantly, ginsenoside monomers, such as Rg1, Re, Rf, Rb1, Rc, Rh1, Rb2, and Rb3, were found to activate SIRT1 and promote energy metabolism. Conclusion: This study may provide new insights into the extensive application of ginseng for cardiac and neurological protection in healthy subjects and patients.

Application of Clinical Laboratory Tests in Musculoskeletal Diseases (근골격계 질환에서 진단의학검사의 활용)

  • Ha, Won-Bae;Geum, Ji-Hye;Shin, Seon-Ho;Lee, Jung-Han
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.13 no.2
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    • pp.109-125
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    • 2018
  • Objectives : It is difficult to make accurate diagnosis of musculoskeletal disease because of its multiple, subjective and non-specific symptoms. It is possible to reduce errors of differential diagnosis through detailed history taking and physical examination in parallel with laboratory tests based on clinical decision. Methods : Korean and foreign on-line databases(Pubmed, Cochran Library, NDSL, KISS and OASIS) were researched for articles discussing laboratory tests in musculoskeletal diseases. Results : Laboratory tests could be applied usefully for various musculoskeletal diseases, In this review, available laboratory components in these musculoskeletal diseases are summarized, and then significance and usefulness of disease-specific laboratory examination are described. Conclusions : When examining musculoskeletal patients, it needs to accurate differential diagnosis by full interview and physical examination, to select required tests by understanding laboratory tests thoroughly, and to judge the prognosis precisely.

A Case of Pseudohypoparathyroidism Type Ib Caused by Aberrant Methylation in the GNAS Complex Locus (GNAS 메틸화 이상으로 인한 거짓부갑상선기능저하증 Ib 1예)

  • Jo, Sung Jin;Han, Eunhee;Jang, Woori;Chae, Hyojin;Kim, Yonggoo;Lee, Gun Dong;Cho, Won Kyoung;Suh, Byung-Kyu;Kim, Myungshin
    • Laboratory Medicine Online
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    • v.7 no.2
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    • pp.83-87
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    • 2017
  • Pseudohypoparathyroidism (PHP) is a rare disorder caused by genetic and epigenetic aberrations in the GNAS complex locus resulting in impaired expression of stimulatory G protein ($Gs{\alpha}$). PHP type Ib (PHP-Ib) is characterized by hypocalcemia and hyperphosphatemia due to renal resistance to the parathyroid hormone, and is distinguished from PHP-Ia by the absence of osteodystrophic features. An 11-yr-old boy presented with poor oral intake and cramping lower limb pain after physical activity. Laboratory studies revealed hypocalcemia, hyperphosphatemia, and increased parathyroid hormone levels. The GNAS complex locus was evaluated using the methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) assay. Gain of methylation in the NESP55 domain and loss of methylation in the antisense (AS) transcript, XL, and A/B domains in the maternal allele were observed. Consequently, we present a case of PHP-Ib diagnosed using MS-MLPA.

Nucleotide-binding oligomerization domain 1 is dispensable for host immune responses against pulmonary infection of Acinetobacter baumannii in mice

  • Kang, Min-Jung;Choi, Jin-A;Choi, Joo-Hee;Jang, Ah-Ra;Park, Ji-Yeon;Ahn, Jae-Hun;Lee, Tae-Sung;Kim, Dong-Yeon;Park, Jong-Hwan
    • Laboraroty Animal Research
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    • v.34 no.4
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    • pp.295-301
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    • 2018
  • Nucleotide-binding domain 1 (Nod1) is a cytosolic receptor that is responsible for the recognition of a bacterial peptidoglycan motif containing meso-diaminophimelic acid. In this study, we sought to identify the role of Nod1 in host defense in vivo against pulmonary infection by multidrug resistant Acinetobacter baumannii. Wildtype (WT) and Nod1-deficient mice were intranasally infected with $3{\times}10^7CFU$ of A. baumannii and sacrificed at 1 and 3 days post-infection (dpi). Bacterial CFUs, cytokines production, histopathology, and mouse ${\beta}$-defensins (mBD) in the lungs of infected mice were evaluated. The production of cytokines in response to A. baumannii was also measured in WT and Nod1-deficient macrophages. The bacterial clearance in the lungs was not affected by Nod1 deficiency. Levels of IL-6, $TNF-{\alpha}$, and $IL-1{\beta}$ in the lung homogenates were comparable at days 1 and 3 between WT and Nod1-deficient mice, except the $TNF-{\alpha}$ level at day 3, which was higher in Nod1-deficient mice. There was no significant difference in lung pathology and expression of mBDs (mBD1, 2, 3, and 4) between WT and Nod1-deficient mice infected with A. baumannii. The production of IL-6, $TNF-{\alpha}$, and NO by macrophages in response to A. baumannii was also comparable in WT and Nod1-deficient mice. Our results indicated that Nod1 does not play an important role in host immune responses against A. baumannii infection.