Evaluation Of Current Techniques In Diagnoses Of Human Immune deficiency Virus HIV

(A case study of university of Nigerian teaching hospital)

5 Chapters
|
55 Pages
|
7,037 Words

The diagnosis of Human Immunodeficiency Virus (HIV) involves a combination of advanced techniques to accurately identify the presence of the virus in an individual’s system. Nucleic Acid Tests (NATs) play a crucial role in detecting the genetic material of HIV, providing a highly sensitive method for early diagnosis. Enzyme-Linked Immunosorbent Assay (ELISA) and Western blotting are widely employed to detect specific antibodies produced by the immune system in response to HIV infection. Additionally, rapid tests using lateral flow technology enable quick results, making them valuable in various settings. Polymerase Chain Reaction (PCR) amplifies viral genetic material, aiding in quantifying viral load and monitoring disease progression. The integration of these diverse diagnostic approaches ensures a comprehensive understanding of HIV infection, facilitating timely intervention and management.

ABSTRACT

A study was carried to ascertain the potency of some techniques used in diagnosis of Human Immunodeficiency virus (HIV). Two hundred and five samples (203) were collected from the patients from the university of Nigerian teaching hospital and was analysed using Elisa kit, which has the ability to detect antibodies and antigens in the patients serum, the Western blots were used as the confirmatory test, to the Elisa test, In case where there is false positive of Elisa test, it is specific and sensitive, Radioimmunoasay looks for the antigens which are radioactively label. The patients result shows that 154 patients out of the 205 diagnosed were negative and only 51 patients were positive. The Elisa kit were best used because of its sensitivity and specificity. It is very cheap and can be easily seen in the market, unlike the Radiommunoassay which are rare and very expensive to be used.

TABLE OF CONTENT

Title Page
Certification
Acknowledgment
Dedication
Abstract
List Of Tables

 

Chapter One
1.0 Introduction

1.1 Hypothesis
1.2 Aims And Objectives
1.3 Statement Of Problem
1.4 Limitation Of Study

Chapter Two
2.0 Literature Review

2.1 Pathogenesis Of Hiv Infection
2.2 Epidemiology Of Hiv
2.3 Transmission Of Hiv Infection
2.4 Viral Replication Of Hiv
2.5 Symptoms Of Hiv Infection
2.6 Life Cycle Of Hiv
2.7 Facts About Hiv/Aids

Chapter Three
3.0 Materials And Method

3.1 Current Diagnosis Of Hiv Infection
3.2 Laboratory Diagnosis
3.3 Radioimmunoassay
3.4 Enzymes Linked Immunosorbentassay Elisa
3.5 Western Blot

Chapter Four
4.0 Results

Chapter Five
5.0 Discussion And Conclusion

5.1 Conclusuion
5.2 Recommendation
References
Appendices

CHAPTER ONE

1.0 INTRODUCTION
The Human Immunodeficiency virus (HIV) is the virus that causes acquired Immunodeficiency syndrome (AIDS) a condition that slowly destroys the body Immune system and makes the body vulnerable to infections. The virus is typically called Human Immunodeficiency virus (HIV) because it destroys the Immune system of the individual which is responsible for protecting the individual from disease. The immunodeficiency associated with, HIV infection can be enormous, and it is the major cause of death, due to the disfucntion of immune system. The problem with AIDS is , sits neurological dementia complex. HIV is a lentivirus, a subgroup of retrovirus. The family of virus is known for lafency, persistent viremia, infection of the nervous system and weak hot immune system. Human Immunodeficiency virus (HIV) is small ultra-microscopic organism that infect living things and uses them to make copies of itself when one’s Immune system is damaged by HIV, AIDS take place (Gallants, 1999).
HIV was first recognized in 1981 in Homosexual men in New York city. In the united states the HIV is now known to have originated from chimpanzees, transmission from chimps to human. Initially, there was wild speculation about what might be the cause of AIDs, but in 1982, the centre for disease control had convincing epidermological evidence that AIDS was caused by a new infectious agents.
Dulbecco et-al (1983, located small quantities of the new virus named Lymphademopalty virus (LAN) but enough to be used an antigenina blood test which showed that AIDS patients were infected with the virus. WHO, (19097), responded that the number of patients living with AIDS has escaculated, a figure of 9000 was confirmed by may 1997. In African AIDs was first responded in 1982. In Nigerian it was first responded in 1986, among commercial sex workers in Lagos and calabar. In 2003 the seroprevalence has been on the increase, despite the comprehensive and successful prevention effort in many part of the would, 4. 1 million new HIV infection was expected to have occurs In 2003 alone, which could have been contributed by an estimated 9,020 to 10,000 infection per day.
Currently, the health problem in Nigerian considering reports from various hospitals particularly, the tertiary hospitals, place AIDS infections in Nigerian at a very serious state. the potential and propensity for widespread is enormous and the debilitating and negative effect n the economy, the population category affected the working class and the dependents which constitute the penultimate individuals to the working class. HIV infections in this direction and orientation should be healed as a national emergency in Nigeria.
Meanwhile, Dr. Robert Gallo’s laboratory begin recovering a virus from AIDS patient, and reported the finding in the science journal. A number of these vinal isolated was introduced together into continuous cell cultures to see if a strain of the virus could replicate in the cells one did replicates and Gallo’s named the virus HILV. III because of the resemblance to two human T-lymphotropic viruses. (Neser, 2001).
By 2004, it was shown that many esymtomatic people was infected with virus and could transmits it and that the epidemic was far more extensive than previously suspected. Blood test was generally available for routine testing to donate blood. Thus markedly improving the safety of blood transfusion and products prepared from pooled blood (peiperls, 1995)

1.1 Hypothesis
H.O: There is significant difference in the result of Westernblots (WB), Enzymes Linked Immuno (Elisa) and Radiommuneoassay kit among HIV carriers.
HI: There is no significant difference in the result of Enzymes linked – immurosorbentassay (Elise), Western blots (WB), and Radommunoasay kit (RIA) among HIV carriers.

1.2 AIMS AND OBJECTIVES
To evalulate the current techniques used in the diagnosis of Human Immunodeficiency Virus (HIV).
To help recommend the best and most reliable one essaying HIV

1.3 Statement of problems
The major problem with HIV/AIDs in developing would has been the failure to set realistic priorities with respect to both research and control.
As clinical diagnosis fail to effectively by emphasis on the virus attack is they are increasing case on HIV infection. Some specific techniques are use for the diagnosis of the HIV infection.

1.4 Limitation of the study
this work is carried out in university of Nigeria Teaching hospital Enugu (UNTH). There is lack of finance in the completion of the project work, lack of the project work, lack of the availability of time also reduce the period of time used.

SHARE PROJECT MATERIALS ON:

MORE DESCRIPTION:

Current Techniques In Diagnoses Of Human Immune deficiency Virus HIV:

As of my last knowledge update in September 2021, diagnosing Human Immunodeficiency Virus (HIV) infection typically involves a combination of laboratory tests and clinical assessments. Please note that medical practices and technologies can evolve rapidly, so it’s important to consult with healthcare professionals or refer to updated guidelines for the most current information. However, I can provide an overview of the common techniques used for diagnosing HIV up to that point:

  1. HIV Antibody Testing:
    • ELISA (Enzyme-Linked Immunosorbent Assay): This is often the initial screening test. It detects antibodies to HIV in the blood or oral fluid. If the ELISA result is positive, it is typically followed up with confirmatory tests.
    • Western Blot Test: If the ELISA is positive, a Western blot is used to confirm the presence of HIV antibodies. It is more specific and helps reduce the likelihood of false-positive results.
    • Rapid HIV Tests: These are quick tests that can provide results in minutes. They use blood from a finger prick or oral fluid. If the rapid test is positive, it is usually confirmed with a Western blot or another test.
  2. Nucleic Acid Testing (NAT):
    • Polymerase Chain Reaction (PCR): NAT detects the presence of the virus’s genetic material (RNA or DNA) rather than antibodies. It is highly sensitive and can detect HIV at an earlier stage, often during the acute infection period when antibody levels may still be low.
  3. p24 Antigen Testing:
    • p24 antigen tests: These detect the p24 protein of HIV. During the early stages of HIV infection, before antibodies are produced, the p24 antigen is often present at high levels in the blood. This test can be used in combination with antibody testing for early diagnosis.
  4. Fourth-Generation HIV Tests:
    • Fourth-generation tests: These combine both antibody and p24 antigen testing, making them highly sensitive and able to detect HIV infection earlier than older tests.
  5. Home Testing Kits:
    • Home HIV test kits: These are available for purchase and can provide a confidential way to test for HIV in the comfort of one’s own home. They typically use a fingerstick blood sample and are based on the same principles as laboratory-based tests.
  6. Point-of-Care (POC) Testing:
    • POC tests: These are rapid diagnostic tests that can be performed at the point of care, such as in clinics or community health centers. They offer quick results and are especially valuable in settings with limited access to laboratories.
  7. Clinical Assessment:
    • Clinical evaluation: Healthcare professionals also consider clinical signs and symptoms, medical history, and risk factors when diagnosing HIV. Clinical assessment helps guide testing decisions and may prompt testing even if initial screening is negative.

It’s important to remember that HIV testing and diagnosis should always be performed by trained healthcare providers. If you suspect you may have been exposed to HIV or are at risk, or if you have any questions about HIV testing, it’s crucial to seek medical advice and get tested. Advances in HIV diagnosis and treatment may have occurred since my last update, so consult current medical guidelines and resources for the latest information.