medicină veterinară - Ion Ionescu de la Brad

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Universitatea de Știinţe Agricole și Medicină Veterinară scientists report the parasitism with preadult stages in heart, cave vein and pulmonary artery in humans (1). Dirofilaria repens infection was reported for the first time in human in 1887 in Brazil by Magalhaes. This worm lives in subcutaneous connective tissue, related to blood vessels where the female spread microfilaria. The longevity of microfilaria is ranged in 5-9 months (6). The intermediate hosts are the same like in heartworm disease and the life cycle too. In blood smears made from peripheric blood the morphology of microfilaria are the same in both Dirofilaria worms but Knott’s modified method could differentiate species (1). Subcutaneous dirofilariosis could be asymptomatic or with clinical signs related to skin area like nodules and lesions of dermatitis (12, 23). In human been infections with D. repens occur but are not common. Infections were reported in Italy, Greece, Spain, France, Tunis, Marocco, Turkey, Iran, and Sri Lanka (10, 17, 19, 21, 24, and 26). Most common areas affected were breast, eyes and scrotum (6, 15, 19). In the last century was reported at least 800 cases (20) of human dirofilariosis produced by D. repens with main mammary and ocular localization but the number of case reports have an ascending course in last ten years (6,17). In Romania was reported a case of human subcutaneous dirofilariosis in Buzău county and two in Slatina by Nitzulescu and Gherman (cited by 14). MATERIALS AND METHODS A crossbreed dog female aged 8 years was diagnosed with caval syndrome. Blood samples investigated by light microscopy and circulating antigen test (DiroCheck ® ) confirmed the suspicion of dirofilariosis. The dog died during the treatment and the forensic examination revealed both cardiovascular and subcutaneous forms of dirofilariosis. Worms were investigated in light microscopy using a stereomicroscope and the main features like long, wide of whole body and esophagus were determined for both species and both sexes. RESULTS AND DISCUSSIONS Dirofilaria immitis was found in right ventricle and pulmonary artery, lapped in by a thrombus. The right heart (picture 1) and pulmonary artery was found enlarged and with flask wall. Right ventricle harbored 18 adults of D. immitis and 7 were found in pulmonary artery (picture 2) and his branches. Four worms were arrested in a giant thrombus which occupies half of intra-ventricular space (picture 3). The dimensions of the worms harvested from right heart and pulmonary artery are shown in table 1 and picture 4. In males, the posterior end is convoluted like a pigtail (picture 5), this morphologic feature is needed for mating because the vulva is placed in post-esophageal area and the male need a firm embracement in this very motile environment. In the subcutaneous connective tissue of the same dog were found 32 worms packed in connective membranes related each ones to a blood vessel (picture 6). This kind of connection allows the worm to feed and to spread microfilaria in the blood flow. Picture 1. Right heart dilatation in dog with heartworm disease. 124
Lucrări Științifice – vol. 51 seria Medicină Veterinară Picture 2. Dirofilaria immitis in pulmonary artery. Heartworm disease in dog. Picture 3. Dirofilaria immitis in right ventricle. Heartworm disease. Picture 4. Adult females and males of D. immitis harvested from a dog heart. 125
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ISSN 1454-7406 UNIVERSITATEA DE ŞT
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CUPRINS: 1. ABDELFATTAH Nour EFFECT
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28. OLARIU-JURCA I., COMAN M., LAZ
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55. BRĂSLAŞU M.C., BRĂSLAŞU M.C
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85. GRECU Mariana, HRIŢCU Luminiţ
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118. ROŞCA P., DRUGOCIU D., RUNCEA
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146. ARSENE Marinela OBSERVATII PRI
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174. FIŢ N., RĂPUNTEAN Gh., ŞUTE
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201. POPESCU Raluca, HORHOGEA Crist
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231. VOICU Elena, CARP-CĂRARE M.,
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Universitatea de Știinţe Agricole
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Page 94 and 95: Universitatea de Știinţe Agricole
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indice de forta la administrarea de
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Y = a * x + b Universitatea de Ști
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January February March April May Ju
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sec Universitatea de Știinţe Agri
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INDICELE DE INSAMANTARE SP (ZILE) U
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Grade, Procente (%) Nr căpuşe Uni
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Index după autori: ABDELFATTAH Nou
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H HAGIU N., 275, 279 HERMAN V., 310
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SIMEANU D., 927, 933 SIMION Violeta
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medicină veterinară - Ion Ionescu de la Brad

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