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*Corresponding Author: Emmanuel Ifeanyi Obeagu, Department of Medical Laboratory Science, Imo State University, Owerri, Imo State, Nigeria.
Citation: Emmanuel I Obeagu ,Ifeoluwa O Owojori, A O Hassan. (2021). Evaluation of Haematogical Parameters of Petroleum Attendants Based on Sex in Ondo. Journal of Clinical and Laboratory Research. 4(1); DOI:10.31579/2768-0487/059
Copyright: © 2021 Emmanuel Ifeanyi Obeagu. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Received: 08 November 2021 | Accepted: 20 November 2021 | Published: 29 November 2021
Keywords: haematological parameters; petroleum attendants; sex
The study was done to evaluate changes in haematological parameters among petroleum attendants based on sex in Ondo. Fifty (50) petroleum attendants were randomly recruited for this study. Data were analyzed using the Statistical Package for Social Sciences (SPSS) version 20. The student t-test was used for analysis and level of significance set at p<0.05. The table above showed no significant difference in PCV(p=0.571) WBC(p=0.278), LYM(p=0.297), GRAN(p=0.135) MID (p=0.584), LYM (p=0.841),GRAN (p=0.986), RBC(p=0.339), HGB (p=0.986), MCV (p=0.135), MCH (p=0.896), MCHC (p=0.845), RDW_CV (p=0.795), RDW-SD (p=0.510), PLT(p=0.118), MPV (p=0.686) and P-LCR (p=0.172) but there was significant difference in PDW (21.66±30.88fL, 52.02±42.58fL, p=0.006) when compared between male and female respectively.
This study thus evaluated the need for laboratory investigation of all blood parameters of oil workers. In this study, there was no significant difference in the blood parameters of the attendants based on gender.
Petroleum consists of crude oils and a variety of refined oil products, and is also a significant source of polycyclic aromatic hydrocarbons (PAH). The industry of petroleum refining and distribution play an important role in terms of number of employees in the Nigerian production and overall economy. Petroleum refining has evolved continuously in response to changing consumer demands for better and different products, and involves processing of mainly oil to obtain mixtures of hydrocarbon compounds, the products of which are specified on the basis of aptitude for use [3].
Petroleum is a thick, flammable, yellow-to-black mixture of gaseous, liquid, and solid hydrocarbons that occurs naturally beneath the earth's surface and can be separated into fractions including natural gas, gasoline, naphtha, kerosene, fuel and lubricating oils, paraffin wax, and asphalt and is used as raw material for a wide variety of derivative products. Petroleum products have found its usage in our everyday life and hence the need for fuel attendants to dispense fuel from its reservoir [4].
Occupational exposure to petroleum products and fumes has been reported to have toxic effects on various organs and body systems with high impact on the human respiratory system. Organs such as the heart, lungs, skin and kidneys are affected by these toxic effects resulting in various diseases and different forms of genotoxic, mutagenic, immunotoxic, carcinogenic and neurotoxic manifestations. With the fumes from petroleum products and lead content in fuel having a negative impact on the organs of the body, there will be evident impact on haematological parameters [4].
Exposures to several chemicals are implicated in the derangement of hematological profile. The adverse health effects of gasoline exposure may be primarily related to impairment of the hemopoietic system with bone marrow depression, including pancytopenia, hence aplastic anemia and an increased risk of developing cancer (acute myeloblasticleukemia). Morphological effect on red blood cells (RBCs) like microcytosis also occurs. The above mentioned disorders are believed to be caused by toxic Benzene metabolites [8]. Benzene is metabolized in the liver to its primary metabolite phenol by cytochrome P4502E1 (CYP2E1) through the benzene oxide intermediate. It is subsequently metabolized by CYP2E1 to hydroquinone (HQ) it is then transported to the bone marrow and oxidized to benzochinones, which eventually releases reactive oxygen species (ROS) damaging hematopoietic cells, therefore chronic exposure to benzene is believed to be associated with many of bone marrow failure and hematological malignancies like, Acute Myeloid Leukemia (AML), Aplastic anemia myelodydplastic syndrome, acute lymphoblastic leukemia and chronic myeloid leukemia [2, 5, 7].
The study was done to evaluate changes in haematological parameters among petroleum attendants based on sex in Ondo.
Subjects
The subjects for this study were petroleum attendants in Ondo Town, Ondo State. All adult male and female who work in petrol station at Ondo Town were accounted as source population for the study. However, all adult workers who work at the petrol station at Ondo Town with exposure of six months and above and fulfilling the eligibility criteria were accounted as study population. Fifty (50) petroleum attendants were randomly recruited for this study.
Inclusion Criteria
Adult males and females aged 18-60 years, who have worked as attendants at least six months and above at petrol station would participate in this study.
Exclusion Criteria
Participant with the following data would be excluded from the study
Subjects with any acute infection during blood collection
Subjects with past history of chronic diseases
Subjects on medication affecting blood cell count
Subjects with already blood disorder
Oil workers and mechanics
Procedure for Data Collection
Data were collected over one month’s through questionnaire interviews which would be conducted by the principal investigator. The questionnaire was mainly based on multiple-choice and yes or no questions focusing on socio-demographic data, age, gender, job duration (years), working time (hour/day) and knowledge on gasoline exposure, utilization of protective methods, and health status, smoking and getting any medications. Blood was collected from participants who complete the questionnaire and who agreed to give blood. After collection, laboratory blood analysis was done for the hematological parameters.
Method of Data Analysis
Data were analyzed using the Statistical Package for Social Sciences (SPSS) version 20. The student t-test was used for analysis and level of significance set at p lessthen 0.05.
Ethical Approval
Permission to collect data was obtained from the department and the ethical approval was obtained from the Health Research and Ethics Committee. Consents were obtained from subjects before enrolling them for the study. Subjects were assured of confidentiality and anonymity. Subjects were made to know that there are no incentives and that they can withdraw from the study at any time during the course of the research.
The above table shows demographic profile of the selected petroleum attendant. Of the total attendants, 48% were male and 52% were female. Also, 78% were within age range 15-30years and 22% were within age range 31-45years.
The table above showed no significant difference in PCV(37.33±12.35%, 38.81±4.42%, p=0.571) WBC(43.33±15.94x109/L, 48.87±19.4x109/L, p=0.278), LYM(29.91±40.90%, 40.03±25.98%, p=0.297), GRAN(7169.32±256.35%, 287.25±289.62%, p=0.135) MID (18.77±23.46%, 14.45±30.94%, p=0.584), LYM (26.92±14.91%, 27.85±17.41%, p=0.841),GRAN (66.24±16.55%, 66.15±20.56%, p=0.986), RBC(5.04±2.05 x1012/L, 6.57±7.466 x1012/L, p=0.339), HGB (13.70±20.36 g/dl, 13.80±20.83 g/dl, p=0.986), MCV (53.61±21.39fL, 61.55±15.19fL, p=0.135), MCH (32.85±14.21Pg, 31.93±30.56 Pg, p=0.896), MCHC (35.90±12.20g/dL, 36.48±8.37g/dL, p=0.845), RDW_CV (37.76±70.67%, 111.03±58.90%, p=0.795), RDW-SD (129.33±121.42fL, 111.03±58.90fL, p=0.510), PLT(90.35±48.89x109/L, 115.44±60.51x109/L, p=0.118), MPV (15.65±18.05fL, 18.05±23.20fL, p=0.686) and P-LCR (62.38±28.15%, 51.73±26.20%, p=0.172) but there was significant difference in PDW (21.66±30.88fL, 52.02±42.58fL, p=0.006) when compared between male and female respectively.
This study had recruited 50 petroleum attendants working in Ondo Town, Ondo State. The demographic profile of the attendants showed 48% male and 52 percentage female. Also, they were mostly within age range 15-30years. Petroleum exposure is one of the main health concerns for occupations with risk of exposure to volatile solvents such as in petrol pump workers. In this present study, no significant difference was observed in all the blood parameter of the attendants. This finding confirmed the study carried out by [1] in their comparative cross-sectional study (2015) which was conducted in Mansoura City Egypt on 102 petrol station attendants which showed no significant difference between the subject groups when compared with the control group. However, there was significant difference in the Platelet Distribution Width (PDW) based on sex in this current study. This has shown that Platelet Distribution Width may be a sensitive blood parameter for benzene exposure among petroleum attendants working in Ondo Town. The variation in PDW of the attendants was similar to the study carried out by [6] on hematological indicators of exposure to petroleum products in petroleum refining and distribution industry workers in Nigeria.
This study thus evaluated the need for laboratory investigation of all blood parameters of oil workers. In this study, there was no significant difference in the blood parameters of the attendants based on gender.
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