Ultrastructure of the Anterior Alimentary Tract of Infective-Stage Wuchereria bancrofti (Nematoda: Filarioidea)

1978 ◽  
Vol 64 (5) ◽  
pp. 775 ◽  
Author(s):  
Albert L. Vincent ◽  
Stephen P. Frommes ◽  
Joseph K. Portaro ◽  
Lawrence R. Ash
Parasitology ◽  
1995 ◽  
Vol 111 (1) ◽  
pp. 19-29 ◽  
Author(s):  
A.-B. Failloux ◽  
M. Raymond ◽  
A. Ung ◽  
P. Glaziou ◽  
P. M. V. Martin ◽  
...  

SUMMARYThe vector competences of 6 geographic strains of Aedes polynesiensis for Wuchereria bancrofti were studied using two types of experimental infections. Experimental infection of laboratory-bred mosquitoes fed on the carriers' forearms with different levels of microfilaraemia showed that microfilariae (mf) uptake was directly proportional to the carrier's mf density and, as mf densities decreased, concentration capacity of Ae. polynesiensis increased. It was also shown that infection has an important effect on mosquito mortality, and that the mortality rate differed among mosquito strains. In infections using artificial feeders, the mf uptake was closely regulated, thus showing differences in the vectorial efficiency of Ae. polynesiensis related to the geographic origin of the mosquito strain. The mosquitoes from the Society archipelago were more efficient intermediate hosts than geographically distant strains when infected with W. bancrofti from an island within the archipelago (Tahiti). Mosquito strains from the Society archipelago developed the highest proportion of infective-stage larvae and exhibited the lowest mortality rate when infected with sympatric Tahitian W. bancrofti.


1966 ◽  
Vol 40 (3-4) ◽  
pp. 297-308 ◽  
Author(s):  
A. S. Dissanaike ◽  
G. A. Dissanaike ◽  
W. J. Niles ◽  
R. Surendranathan

In two previous papers (Dissanaike et al., 1957a and 1957b) we described the technique of tagging Culex fatigans and Armigeres subalbatus (=obturbans) with P32 to obtain high beta activities. Filarial larvae were made to develop to the infective stage in these activated mosquitoes and were found to have beta activities high enough for detection individually.


1979 ◽  
Vol 65 (2) ◽  
pp. 246 ◽  
Author(s):  
Albert L. Vincent ◽  
Stephen P. Frommes ◽  
Lawrence R. Ash

2019 ◽  
Vol 9 (1) ◽  
pp. 1-6
Author(s):  
Harfaina Harfaina ◽  
Suharyo Hadisaputro ◽  
Djoko Trihadi Lukmono ◽  
Mateus Sakundarno

Filariasis adalah penyakit infeksi yang disebabkan oleh cacing Wuchereria Bancrofti, Brugia Malayi, dan Brugia Timori yang menyebabkan cairan limfe tidak dapat tersalurkan dengan baik sehingga menyebabkan pembengkakan pada tungkai dan lengan. Meskipun tidak ada penyebab kematian tetapi menyebabakan cacat permanen dan stigma sosial. Eliminasi Filariasis dilakukan dengan Program Pengobatan Massal ke seluruh penduduk di daerah endemis setahun sekali selama 5 tahun. Keberhasilan program ini memerlukan kepatuhan minum obat pencegahan filariasis. Tujuan penelitian ini untuk mengetahui faktor-faktor yang mempengaruhi ketidakpatuhan minum obat sebagai upaya pencegahan filariasis. Penelitian ini Populasi dalam penelitian ini adalah penduduk berusia 15-65 tahun di dua kelurahan endemis yaitu kelurahan kuripan kertoharjo dan kelurahan jenggot selama mei-juli 2018. Sampel dalam penelitian ini 80 kasus dan 80 kontrol dengan teknik cluster random sampling. Variabel yang terbukti berpengaruh yaitu persepsi kerentanan negatif (OR=4,093) 95%CI=1,356-12,350 dan self efficacy negatif (OR=30,298) 95%CI=8,986-102,156. Persepsi kerentanan negatif dan self efficacy negatif merupakan faktor perilaku yang mempengaruhi ketidakpatuhan minum obat pencegahan filariasis. Diharapkan ada penelitian lanjutan tentang ketidakpatuhan minum obat pencegahan filariasis bukan berwujud persepsi tetapi dengan pengukuran faktor lingkungan sosial secara objektif dengan melakukan intervensi berupa perubahan perilaku.   Kata kunci : Filariasis, Ketidakpatuhan, Minum Obat, Mix Method   FACTORS THAT INFLUENCE DRINKING DRUG PREVENTION NON COMPLIANCE OF FILARIASIS IN PEKALONGAN CITY   ABSTRACT Filariasis is an infectious disease caused by worms Wuchereria Bancrofti, Brugia Malayi, and Brugia Timori, adult worm lives and damage reulting in blockage of lymph channels, causing swelling of the legs and arms. Although no cause of death but causes permanent disability and social stigma. Filariasis elimination done with the Mass Treatment Program to the entire population in endemic areas a year for 5 year. Succesfully this program required a medication adherence. The purpose of this study was to determine the factors that influence drug disobedience as an effort to prevent filariasis. This study uses a mix method. The population in this study were residents aged 15-65 years in two endemic villages, namely kuripan kertoharjo and jenggot villages during May-July 2018. Samples in this study were 80 cases and 80 controls with cluster random sampling technique. Variables that proved influential were perceptions of negative vulnerability (OR = 4,093) 95% CI = 1,356-12,350 and negative self efficacy (OR = 30,298) 95% CI = 8,986-102,156. Negative vulnerability perceptions and negative self efficacy are behavioral factors that influence non-compliance with filariasis prevention drugs. It is expected that further research on non-compliance with taking drugs to prevent filariasis is not a form of perception but objective measurement of social environmental factors by intervening in the form of behavior change.   Keywords: Filariasis, Noncompliance, Medication, Mix Method


2011 ◽  
Vol 93 (6) ◽  
pp. e91-e93 ◽  
Author(s):  
Tse-Hua Lo ◽  
Mu-Shiun Tsai ◽  
Tzu-An Chen

Primary angiosarcomas arising from the alimentary tract are rare and only a few cases have been reported in the literature. We report a case of an angiosarcoma of the sigmoid colon with intraperitoneal bleeding but not rectal bleeding. A 21-year-old female patient received a laparotomy and a mass lesion over the sigmoid colon was found with active bleeding. A sigmoid colectomy was performed as a curative resection. Grossly, the sigmoid colon contained a kidney shaped, hemorrhagic tumour from the submucosal layer extension to the antimesenteric side. Intraluminally, the mucosa of the colon was intact. Microscopic examination revealed a high grade angiosarcoma composed of fascicles of spindle cells and solid sheets of epithelioid cells. Immunohistochemical stains revealed a positive result for CD31 and the endothelial nature of the malignancy was confirmed. Smooth muscle antigens, desmins, cytokeratins AE1/AE3 and CD117 were all negative. The patient is still alive without evidence of recurrence or metastasis at a three-year follow-up appointment. Owing to the availability of immunohistochemical studies, some atypical sarcomas would now be correctly classified as angiosarcomas. Since no optimal adjuvant treatment is effective, curative surgical excision is still the best choice of treatment.


1966 ◽  
Vol 50 (1) ◽  
pp. 159-165
Author(s):  
Robert Turell
Keyword(s):  

1955 ◽  
Vol 69 (1) ◽  
pp. 321-324
Author(s):  
J. F. D. Shrewsbury ◽  
G. J. Barson
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document