Undergraduate Special Problem

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Relationship of moderate to heavy Trichuris trichiura infection with the packed red cell volume and mental ability of elementary schoolchildren in Miag-ao, Iloilo
Calibjo, Hartzell M.; Calvo, May Lyn A.; Dizon, Lourdes Anne A.; Garay, Cyrus Q.; Gonzales, Lorenz Alfred B.; Gibraltar, Felli Claire G.; Peralta, Lou Gillyn B.; Spitzer, Mark Manfred B.; Taburaza, Larimee S. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2005-04)
Trichuris trichiura commonly known as whipworm is a nematode that infects human particularly primary school-aged children. Studies show that moderate to heavy Trichuris infection may adversely affect the cognitive functions of schoolchildren (Nokes, 1991) and may cause anemia overtime (Politt, 1982). However, this has not been established in the local setting. This led the researchers to locally conduct a study that would primarily determine the relationship of the moderate to heavy intensity of trichuriasis with the mental ability of schoolchildren and with the Packed Red Cell Volume. It also aims to determine if there is a significant difference between the mental ability test scores and the Packed Red Cell Volume of moderate to heavy Trichuris infected group and the non-infected group. Three coastal elementary schools in Miag-ao, Iloilo was chosen as the study sites. These were Miag-ao West Central Elementary School, Igtuba-Guibongan Elementary School, and Bacauan-Mambatad Elementary School. Five hundred twenty five (525) elementary pupils aged 8—14 years had their stool samples examined using Modified Kato Katz to determine the intensity of Trichuris infection. Thirty (30) moderate to heavy Trichuris infected students and another 30 non-infected students were randomly selected as the study sample. Capillary blood samples were collected from the 60-study sample. The packed red cell volume was determined using the Microhematocrit Method and was categorized as normal and below normal. Mental ability of the study sample was measured using the standardized Culture Fair Intelligence Test (CFIT). The test instrument was administered and interpreted by the Psychometricians. The results of the tests consisted of verbal interpretation and was categorized as below average, average and above average. The results showed no significant difference between the moderate to heavy infected group and the non-infected group based on mental ability test verbal interpretation (p= 0.770). The non-infected group even obtained a higher proportion of study samples that were below average CFIT test scores compared with the moderate to heavy infected group. The results of packed red cell volume revealed that all study samples (100%) in the non-infected group had normal Packed Cell Volume (PCV). On the other hand, only 90% of the study samples in the moderate to heavy infected group had normal Packed Cell volume (PCV) while the remaining 10% had below normal PCV. Statistically however, the difference was not significant (p= 0.164). Finally, Linear Regression Analysis showed no linear relationship between mental ability test Deviation Intelligence Quotient and Packed Red Cell Volume among the study samples. The scatter plot diagram showed dispersed distribution of study samples which means weak relationship between the two variables. The insignificant results in this study could be attributed to various confounding variables that were not controlled strictly all throughout the study, as well as the insensitivity of the test instruments used. Thus, the study recommends controlling carefully the various extraneous variables such as socioeconomic conditions, nutritional status of the study sample. The study also recommends the use of more sensitive and specific instruments for measuring the blood level and cognitive functions.
Intestinal parasitic infections in children living in selected barangays with urban slums along Iloilo River
Aguro, Eric D.; Banaag, Arlene D.; Jacobe, Venus N.; Ordaniel, Lilac Mared A.; Taleon, Kathleen Joy B.; Yandra, Marnelle Gay A. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2006-03)
This cross-sectional study was performed to determine the intestinal parasitic infection in children age 0-13 years old in three selected barangays with urban slums located alongside Iloilo River. A total of 127 stool samples from 65 males and 62 females were examined by utilizing formalin-ether concentration technique (FECT) and direct wet mount thereafter using Lugol's solution. It was found out that 59.8% of the children examined were positive for one or more intestinal parasites. The most frequent soil-transmitted helminth observed was Ascaris lumbricoides (48.0%) followed by Trichuris trichiura (34.6%). Pathogenic protozoans determined were Entamoeba histolytica (9.4%) and Giardia lamblia (0.8%). Other nonpathogenic species identified were Entamoeba coli (15.7%), Blastocystis hominis (3.1%) and lodamoeba butschlii (0.8%). Parasitic infection with single species had the highest frequency of 31.5% compared to multiple infection (28.3%). The relatively high prevalence of these infections among children living three selected barangays with urban slums alongside Iloilo River was found to be independent of factors the respondents’ sex (p=0.106), age group (p=1.691), and consistency of stool sample (p=1.835). Moreover, the degree of infection in terms of sex (p=3.174), age (p=9.136), and consistency of stool samples (p=2.798) were not statistically different from each other. The high prevalence rate of pathogenic intestinal parasitic infection may have also been influenced by factors other than the ones considered, such as environmental and socio-demographic factors. The study highly suggests mass treatment and preventive measures such as health education of the community

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