• 제목/요약/키워드: Inflammatory Lesions

검색결과 481건 처리시간 0.023초

Histopathological effects of the nematode Amidostomum acutum on the small intestines of two aquatic birds: Fulica atra and Gallinula chloropus

  • Altaif, Khalil I.;Mhaisen, Furhan T.;Mizhir, Aliaa H.
    • 대한수의학회지
    • /
    • 제61권3호
    • /
    • pp.18.1-18.4
    • /
    • 2021
  • The small intestines of two rallid aquatic birds (Fulica atra Linnaeus, 1758 and Gallinula chloropus (Linnaeus, 1758) from Bahr Al-Najaf depression, southwest of Al-Najaf city, mid-Iraq), were infected with the nematode Amidostomum acutum Seurat, 1918 with a prevalence of 25% and 50%, respectively, and a mean intensity of 24.5 and 30, respectively. The infected birds showed several gross pathological and microscopic lesions in their small intestines due to the infection with this nematode. The gross lesions included hypertrophy in the anterior part of the duodenum and small rough nodules on the small intestine wall. Microscopic lesions included necrosis and shortening of villi with their fullness with inflammatory cells, degeneration of villi, and an increased number of acini at the base of the intestinal villi.

Anti-inflammatory effects of DA-9601, an extract of Artemisia asiatica, on aceclofenac-induced acute enteritis

  • Kim, Ju Hwan;Shin, Chang Yell;Jang, Sun Woo;Kim, Dong-Seok;Lee, Wonae;Kim, Hyung-Gun;Kim, Hak Rim
    • The Korean Journal of Physiology and Pharmacology
    • /
    • 제25권5호
    • /
    • pp.439-448
    • /
    • 2021
  • DA-9601 is an extract obtained from Artemisia asiatica, which has been reported to have anti-inflammatory effects on gastrointestinal lesions; however, its possible anti-inflammatory effects on the small intestine have not been studied yet. Therefore, in this study, we investigated the protective effects of DA-9601 against the ACF-induced small intestinal inflammation. Inflammation of the small intestine was confirmed by histological studies and the changes in the CD4+ T cell fraction induced by the inflammation-related cytokines, and the inflammatory reactions were analyzed. Multifocal discrete small necrotic ulcers with intervening normal mucosa were frequently observed after treatment with ACF. The expression of IL-6, IL-17, and TNF-α genes was increased in the ACF group; however, it was found to have been significantly decreased in the DA-9601 treated group. In addition, DA-9601 significantly decreased the levels of proinflammatory mediators such as IL-1β, GM-CSF, IFN-γ, and TNF-α; the anti-inflammatory cytokine IL-10, on the other hand, was observed to have increased. It is known that inflammatory mediators related to T cell imbalance and dysfunction continuously activate the inflammatory response, causing chronic tissue damage. The fractions of IFN-γ+ Th1 cells, IL-4+ Th2 cells, IL-9+ Th9 cells, IL-17+ Th17 cells, and Foxp3+ Treg cells were significantly decreased upon DA-9601 treatment. These data suggest that the inflammatory response induced by ACF is reduced by DA-9601 via lowering of the expression of genes encoding the inflammatory cytokines and the concentration of inflammatory mediators. Furthermore, DA-9601 inhibited the acute inflammatory response mediated by T cells, resulting in an improvement in ACF-induced enteritis.

A primo vessel-like structure in a dog with inflammatory pseudotumor

  • Cho, Sung-Jin;Hong, Sun-Hwa;Han, Sang-Jun;Kim, Ok-Jin
    • 한국동물위생학회지
    • /
    • 제35권1호
    • /
    • pp.77-82
    • /
    • 2012
  • Inflammatory pseudotumor (IPT) is a term defining a mass characterized microscopically by a proliferation of bland mesenchymal spindle cells infiltrated by diffuse mixed inflammatory cells with a predominance of plasma cells and lymphocytes. Here, we show the primo vessel-like structure of the primo-vascular system (PVS) in a dog with IPT. A 6-years old male Mongrel dog was diagnosed with an abnormal mass (diameter 5.5 cm, weight 22 g) near left preputial area. The dog was submitted to the surgical detectomy of the mass. During the surgical operation, we observed primo vessel-like material. After fixations, the masses appeared macroscopically as lipoid-like, firm, white to grey masses, measuring $5{\times}8cm$. Histologically, cellular infiltration into the muscular layers was frequently seen. The mesenchymal proliferation remained the main component of the mass and was composed of myofibroblastic-like spindle cells characterized by globular, irregular nuclei containing open chromatin and a prominent nucleolus. On the basis of the histopathologic lesions, the subcutaneous mass was diagnosed as IPT. Also, we detected a primo vessel-like structures in some areas of the IPT tissues. These were observed as novel thread-like structures and bundle of tubular structures. To our knowledge, this report is the first case of primo vessel-like structure in a dog with IPT.

여드름의 약물치료요법 (Pharmacological treatment options for acne)

  • 박귀영
    • 대한의사협회지
    • /
    • 제61권11호
    • /
    • pp.680-686
    • /
    • 2018
  • Acne vulgaris is a very common condition affecting up of about 80% to 90% of adolescents. The patients with acne have been shown to be adversely impacted by the effect of acne on their quality of life. Four factors are believed to play a key role in the development of acne lesions: excess sebum production, disturbed keratinization within the follicle, colonization of the pilosebaceous duct by Propionibacterium acnes, and the release of inflammatory mediators into the skin. Consequently, the target for acne therapy is these well-known pathogenic factors responsible for this disease state. Topical retinoids correct abnormal keratinization, but it should be applied cautiously because of irritation. Benzoyl peroxide is an effective bactericidal agent against P. acnes. Main topical antibiotics are erythromycin and clindamycin. Fixed combination topical products with retinoids, benzoyl peroxide and antibiotics have been introduced. Use of systemic antibiotics, including tetracyclines and macrolides rapidly improves inflammatory acne lesions. Oral isotretinoin is effective against all of the main pathogenic features of acne but is contraindicated in pregnant women and has been associated with cheilitis and dry skin. Hormonal therapy has been found to improve acne in some selective patients and should be considered for appropriate candidates. This review will present the general aspects of the pharmacological treatments for acne.

Effects of sleep deprivation on coronary heart disease

  • Wei, Ran;Duan, Xiaoye;Guo, Lixin
    • The Korean Journal of Physiology and Pharmacology
    • /
    • 제26권5호
    • /
    • pp.297-305
    • /
    • 2022
  • The presence of artificial light enables humans to be active 24 h a day. Many people across the globe live in a social culture that encourages staying up late to meet the demands of various activities, such as work and school. Sleep deprivation (SD) is a severe health problem in modern society. Meanwhile, as with cardiometabolic disease, there was an obvious tendency that coronary heart disease (CHD) to become a global epidemic chronic disease. Specifically, SD can significantly increase the morbidity and mortality of CHD. However, the underlying mechanisms responsible for the effects of SD on CHD are multilayered and complex. Inflammatory response, lipid metabolism, oxidative stress, and endothelial function all contribute to cardiovascular lesions. In this review, the effects of SD on CHD development are summarized, and SD-related pathogenesis of coronary artery lesions is discussed. In general, early assessment of SD played a vital role in preventing the harmful consequences of CHD.

DNFB에 의해 알레르기성 접촉성 피부염이 유도된 마우스에서 초석잠 추출물의 효과 (Effect of the Extract of Stachys Affinis on DNFB-induced Allergic Contact Dermatitis in Mice)

  • 이윤성;정선오;배현옥
    • 동의생리병리학회지
    • /
    • 제36권1호
    • /
    • pp.23-27
    • /
    • 2022
  • This study aims to evaluate the anti-inflammatory effect of 80% ethanol extracts of Stachys affinis (MQ) on 1-fluoro-2,4-Dinitrofluorobenzene (DNFB) induced atopic dermatitis (AD) in Balb/c mice. AD-like allergic contact dermatitis was induced by challenge of DNFB on the ear after DNFB sensitization on the back sides of mice. MQ alleivated clinical severity in AD-like skin lesions. In addition, ear thickness of epidermis and penetration of inflammatory cells in AD-like skin lesions were decreased by topical application of MQ. The the serum levels of tumor necrosis factor-α (TNF-α) and interleukin-4 (IL-4) were measured in AD mice using ELISA kits. Levels of TNF-α and IL-4 in serum were significantly decreased by topical application of MQ. Therefore, this study could give a clinical basis that MQ could be a agent to prevent AD.

Histopathological Comparison of Animal Models of Skin Inflammation and Inhibition of the Inflammatory Responses by Plant Flavonoid, Wogonin

  • Kim, Hyun-Pyo
    • Biomolecules & Therapeutics
    • /
    • 제13권3호
    • /
    • pp.133-137
    • /
    • 2005
  • Wogonin(5,7-dihydroxy-8-methoxyflavone), an anti-inflammatory plant flavonoid, was previously demonstrated to modulate the several parameters of animal skin inflammation. This compound inhibited edematic response as well as proinflammatory gene expression. In this investigation, the histopathological changes of the lesions from different types of experimental skin inflammation were compared and the potential therapeutic effect of topically applied wogonin was evaluated. From the results, it was found that multiple TPA treatment drastically increased ear edema accompanied with epidermal hyperplasia and inflammatory cell infiltration, while phenol treatment provoked only edematic response in the dermal area. Wogonin somewhat differently inhibited these animal models of skin inflammation.

The role of interleukin-17 in bone metabolism and inflammatory skeletal diseases

  • Lee, Youngkyun
    • BMB Reports
    • /
    • 제46권10호
    • /
    • pp.479-483
    • /
    • 2013
  • The balance between osteoblast-dependent bone formation and osteoclast-dependent bone resorption maintains bone homeostasis. In inflammatory conditions, this balance shifts toward bone resorption, causing osteolytic bone lesions observed in rheumatoid arthritis and periodontitis. A recently discovered family of cytokine IL-17 is widely reported to mediate diverse inflammatory processes. During the last decade, novel roles for IL-17 in skeletal homeostasis have been discovered indicating the potential importance of this cytokine in bone metabolism. This review will summarize and discuss the involvement of IL-17 during bone homeostasis in both physiologic and pathologic conditions. A better understanding of the role of IL-17 in skeletal systems warrants an advance in bone biology, as well as development of therapeutic strategies against bone-lytic diseases, such as rheumatoid arthritis and periodontitis.

술 후 재발한 염증성 성대 병변의 임상 양상 (Clinical Analysis of Recurrence in Inflammatory Laryngeal Disease after Laryngomicrosurgery)

  • 김영선;김진호;박문규;유홍균;오준환;최종욱
    • 대한후두음성언어의학회지
    • /
    • 제11권1호
    • /
    • pp.28-31
    • /
    • 2000
  • Microscopic surgery of the larynx normally have a low recurrence rate. However, once they do recur, it is uneasy to manage recurrent diseases. Recurrence is often the result of inappropriate postoperative care and voice management. Out of the 764 patients operated for benign inflammatory laryngeal diseases, we have conducted a clinical analysis of 54 cases who have had at least one episode of recurrence after the initial treatment with laryngomicrosurgery (7.1% of recurrence rate). High risk groups for recurrence were determined, and they were related to cigarette smoking, alcohol intake, laryngopharyngeal reflux. From our experience and literature review, we conclude that pre- and postoperative patient education concerning these risk factors and voice usage Is of critical need to prevent recurrence of inflammatory laryngeal lesions after laryngomicrosurgery.

  • PDF