Journal of parasitic diseases (J Parasit Dis )

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  • ISSN
    0975-0703

Publications in this journal

  • Journal of parasitic diseases 01/2015;
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    ABSTRACT: Two species of Cymothoidae (Nerocila loveni and Nerocila sundaica) were collected on the host fish Pomadasys maculatus from the Nagapattinam coast. Pomadasys maculatus is a new host for these parasitic isopods not previously recorded in the world. Nerocila loveni was mainly attached on the caudal peduncle of the fish and N. sundaica was collected from the pectoral fin and the body of the host. For N. loveni and N. sundaica, the prevalence reached 28.70 and 26.08 % respectively. One parasite was collected per host fish.
    Journal of parasitic diseases 11/2014; Online First.
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    ABSTRACT: This study was conducted from August 2013 to January 2014. Host fishes were collected from the Nagapattinam Coast, India. During the sampling period, 242 fishes were infested out of 1440 specimens examined from nine different species of marine fishes. A total of 267 parasitic isopods belonging to nine cymothoid species viz., Anilocra dimidiata (Bleeker 1857), Catoessa boscii (Bleeker 1857), Cymothoa indica (Schioedte and Meinert 1884), Joryma sawayah (Bowman and Tareen 1983), Nerocila arres (Bowman and Tareen 1983), N.loveni (Bovallius 1887) N. phaiopleura (Bleeker 1857), N. serra (Schioedte and Meinert 1881) and N.sundaica (Bleeker 1857) were collected. The Nerocila species were attached to the pectoral fin, the caudal peduncle and different regions of the body surface of the host fishes. The specimen belonging to the species Catoessa boscii, Cymothoa indica and Joryma sawayah were collected from the mouth and the branchial cavity of the infected fishes. Anilocra dimidiata was only found on the body surface of the host fish. The overall prevalence reached 16.80 %. A maximum prevalence was observed in C. boscii parasitizing Carangoides malabaricus (26.81 %) and a minimum prevalence in N. sundaica parasitizing Terapon puta (P = 7.31 %). The mean intensity ranged from 1 to 1.3.
    Journal of parasitic diseases 11/2014;
  • Journal of parasitic diseases 11/2014;
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    ABSTRACT: Zinc sulfate (ZS) has been used for the treatment of acute cutaneous leishmaniasis (CL) in both forms of in vivo and in vitro recently. The aim of the present study was to compare the efficacy of intralesional injection of ZS 2 % solution with intralesional glucantime in the treatment of acute CL. In this double-blind randomized clinical trial, 80 cases with acute old world dry type CL were enrolled in the study. The treatment protocol in the first group consisted of intralesional injection of ZS 2 % vials once a week for 10 weeks or sooner in case of complete resolution of the lesions. In the second group, intralesional glucantime once a week for 10 weeks or sooner in case of complete resolution of the lesions were used. In both groups cryotherapy was performed once every other week for 10 weeks. In ZS versus second group, partial and complete clinical response was observed with fewer injections although this difference was not statistically significant. In addition, we found that the trend of treatment in second group was faster but again it was not significant [partial treatment: hazard ratio (HR) 1.4, 95 % CI 0.7–2.9; complete treatment: HR 1.3, 95 % CI 0.6–2.8]. The results of this study showed that the intralesional injection of ZS 2 % solution was as effective as glucantime on the healing of the acute old world dry type CL.
    Journal of parasitic diseases 11/2014;
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    ABSTRACT: Cystic Echinococcosis is a parasitic disease with cosmopolitan distribution caused by the tape worm Echinococcus granulosus. Fibrous layer is developed around the cyst as a host immune response reaction. The aim of this study was to evaluate the rate of IL-4 gene expression in fibrous layer of bovine and ovine hepatic hydatid cysts using quantitative technique of Real-Time PCR. In this descriptive study the samples of hydatid cyst fibrous layer were taken from 6 bovine and 6 ovine hepatic hydatid cysts. Samples of normal liver tissue close to the cyst were also taken as controls. Total RNA from each sample was extracted and then converted to cDNA. Afterward, the rate of IL-4 gene expression for each sample was evaluated using real-time PCR technique. Data were analyzed by REST software (version 2.0.13, 2009). In sheep the rate of IL-4 gene expression in the fibrous layer of hepatic hydatid cysts was 1.98 times more than the rate of IL4 gene expression in control samples, but the difference was not significant (P = 0.561). In cattle the rate of IL-4 gene expression in the fibrous layer of hepatic hydatid cysts was 9.84 times more than that of control samples which was statistically significant (P < 0.001). With high rate of IL4 expression especially in fibrous layer of bovine hydatid cyst, it can be concluded that this interleukin may play an important role in host parasite relationship.
    Journal of parasitic diseases 11/2014;
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    ABSTRACT: Of late, toxoplasmosis has gained immense importance as an opportunist parasite in immunocompromised patients. In immunocompromised subjects, the disease is supposed to occur in acute form and causes acute toxoplasmic encephalitis. However, the exact pathogenesis of other vital organs, particularly in acute form of infection, is still a matter of debate. Therefore, an attempt was made to study the pathogenesis of acute form of toxoplasmosis using cryopreserved human RH strain of the parasite in murine models. For this, 100 tachyzoites were given to individual mice and upon the setup of acute form of infection, the mice were euthanized and the organs were processed for histopathology. Histopathology revealed tachyzoites in liver only while severe necrosis due to multiplication of tachyzoites were visible in liver, spleen, lungs and brain. Kidneys and heart appeared more or less normal. Finally, the pathology of disease in these organs is described in detail. The present research has generated some vital information regarding necrotic changes in tissues due to acute toxoplasmosis and will defiantly help the researchers in the better understanding of disease particularly in humans and putting up of suitable treatment regime for human subjects infected with acute toxoplasmosis.
    Journal of parasitic diseases 10/2014;
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    ABSTRACT: The present study deals with the description of a new piscine trypanosome species found infecting the fresh water fish Schizothorax plagiostomus Heckel from river Jhelum, Srinagar, J&K, India and evaluating the haematological parameters of the infected fish. Haematological examination of S. plagiostomus revealed 61.1 % infection with an intensity of 1–9 trypanosomes/100 RBC’s. Small (26.9 ± 1.39 µm) and large (47.17 ± 3.50 µm) forms of the trypanosome were observed in light microscopy investigations, revealing the dimorphic nature of the species. The trypanosome species was found to be distinct from the other related dimorphic species in morphometric dimensions including cell length, cell breadth, kinetoplast index, flagellar index, and cytological peculiarities, respectively. The detailed descriptions of the two morphological forms found in the blood of S. plagiostomus are provided. Based on the geographical location, morphometrics, cytological peculiarities, host status and comparative study, the new species is named Trypanosoma kashmirensis n. sp. The parasitic infestation caused a significant decrease (p < 0.05) in red blood cell counts, haematocrit and haemoglobin concentrations while, the leucocyte (WBC) count, mean cellular volume and mean cellular haemoglobin showed a significant increase (p < 0.05) in the infected fish as compared to the non-infected. The above alterations of the haematological parameters could be used as an important tool for the indication of Trypanosoma infection in the fish.
    Journal of parasitic diseases 09/2014;
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    ABSTRACT: One year crossectional survey was carried out to determine and describe the prevalence and intensity of gastrointestinal parasite infections in hangul (Cervus elaphus hanglu) in Dachigam National Park of Kashmir through faecal examinations. Out of 153 faecal samples examined, 82 (53.59 %) were found infected with GIT helminthes. In present study seven helminth species were found, including five nematode [Haemonchus contortus (55.39 %), Trichuris ovis (39.75 %), Dictyocaulus viviparus (28.4.00 %), Oesophogostomum circumcincta (13.7 %) and Chabertia ovina (4.02 %)] one trematode [Fasciola hepatica (17.3 %)] and one cestode species [Moneizia expansa (6.05 %)]. Based on the severity of infection 81.7 % of hangul positive samples were severely infected (epg 1,500), 8.3 % heavily infected (epg = 1,100–1,500), 3.8 % moderately infected (epg = 800–1,000) and 7.2 % mildly infected (epg = 500). Season, sex and age were the factors that influenced the epidemiological prevalence of GIT helminths in hangul in the present study. The maximum helminth infection was observed in summer season and lowest in winter (P = 0.003). Lower age groups were more infected than adult animals (P[0.05). Prevalence was higher in males than females (P[0.05). The present study will initially be of great significance to add to existing knowledge of the epidemiology of GIT helminth of hangul which is the pioneering study on this animal in the valley and the findings will be quite helpful to devise the appropriate control and prophylactic strategies for GIT helminthiasis of hangul in the Dachigam national park.
    Journal of parasitic diseases 09/2014;
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    ABSTRACT: The present study aims to detect the digenetic larvae infections in Bulinus truncatus and Biomphalaria alexandrina snails and also PCR detection of Schistosoma mansoni infection. The snails were collected from different branches of Yousef canal and their derivatives in El Fayoum Governorate. The snails were investigated for infection through induction of cercarial shedding by exposure to light and crushing of the snails. The shed cercariae were S. mansoni, Pharyngeate longifurcate type I and Pharyngeate longifurcate type II from B. alexandrina, while that found in B. truncatus were Schitosoma haematobium and Xiphidiocercaria species cercariae. The seasonal prevalence of infection was discussed. Polymerase chain reaction was used for the detection of S. mansoni in the DNA from field collected infected and non infected snails. The results of PCR showed that the pool of B. alexandrina snails which shed S. mansoni cercariae in the laboratory, gave positive reaction in the samples. Pooled samples of field collected B. alexandrina that showed negative microscopic shedding of cercariae gave negative and positive PCR in a consecutive manner. Accordingly, a latent infection in the snail (negative microscopic) could be detected by using PCR.
    Journal of parasitic diseases 09/2014;
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    ABSTRACT: Intestinal parasites are important enteric pathogens. Poverty, low quality of food and water supply and poor sanitation systems are the important factors associated with intestinal parasitic infections. These kinds of infections can be a good index for hygienic and sanitation status of the society. This study aimed to determine the prevalence of intestinal parasitic infections among humans referred to Dr. Sharifi Clinical Laboratory, Isfahan, Iran, 2014. In this cross sectional study, 652 fecal samples (286 males and 366 females) from humans who had stool examination test from January to August 2014 were chosen. Microscopic examination for parasitic infections has been carried out using wet mount method. Indistinguishable samples underwent trichrome staining method for accurate identification of protozoa. Intestinal parasitic infections were observed in 68 (10.42 %) out of 652 studied humans. Forty eight Blastocystis hominis (7.36 %), thirteen Endolimax nana (1.99 %), nine Giardia lamblia (1.38 %), five Entamoeba coli (0.76 %), four Chilomastix mesnili (0.61 %) and two Iodamoeba butschlii (0.15 %) were the observed protozoa in the studied population. B. hominis, E. nana and C. mesnili were found to be significantly more prevalent in people with loose stool specimen. Considering the helminthic infections, only one case (0.15 %) that was excreted Taenia saginata proglottids has been documented among 652 studied humans. Based on the findings of the present study intestinal parasitic infections in Isfahan city has been dramatically decreased over the past years and shows a good hygienic and sanitation status of the city.
    Journal of parasitic diseases 09/2014;
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    ABSTRACT: Leishmania infantum is a causative agent of visceral leishmaniasis or kala-azar, which is endemic in some part of Iran. Azarshahr city located in East Azerbaijan province, North West of Iran, which is endemic for visceral leishmaniasis. This study aimed to investigate the possible reservoir role of cats for visceral leishmaniasis in the Azarshahr area. Totally 65 cats have been trapped alive from villages of Azarshahr county and their serum samples subjected to direct agglutination test (DAT) for L. infantum antibodies. Giemsa stained impression smears have been prepared for parasitological examination of spleen and liver tissue. Also liver and spleen samples of the cats have been cultured in Novy-MacNeal-Nicolle (NNN) medium and also used for PCR. None from 65 samples was positive in NNN culture, PCR and microscopic examination. Fifteen (23.07 %) out of 65 serum samples showed Leishmania specific antibody agglutination at 1:320 dilution or above, but all considered as negative because none of them confirmed by Giemsa stained smears, PCR and NNN culture. According to the findings of the present study, cats are not a reservoir for visceral leishmaniasis in the Azarshahr area.
    Journal of parasitic diseases 09/2014;