Anthony John Umoyen

The Distribution and Seasonal Variation of Zooplankton Species of the Great Kwa River, Calabar, Nigeria: A Reassessment Approach

Paul Bassey Ekpo, Anthony John Umoyen, Nseobong Godwin Akpan, Inyang Paul Ekpo, Cecilia James Sunday, Gabriel Abu & Blessing Bassey Ekpenyong · Annual Research & Review in Biology · 2022

Background: Human activities adversely affect the distribution and diversity of zooplankton. They are diverse group of organisms with little or no locomotive ability and quickly respond to changes in their environment. This research was aimed at providing updated information on t...

Open access Research Article 10.9734/arrb/2022/v37i830523

Prevalence of Anaemia and Pulmonary Mycoses in Immunocompromised Subjects: A Review of Nigeria Perspective

Nseobong Godwin Akpan & Anthony John Umoyen · International Journal of Pathogen Research · 2022

Anaemia and mycoses are being diagnosed with increasing frequency among immuno-compromised subjects. Fungal respiratory infections are important causes of mortality and morbidity among immuno-compromised individuals. The goal of this research was to systematically review the prev...

Open access Research Article 10.9734/ijpr/2022/v9i130218

Evaluation of Pollution Load: Heavy Metal Contents and Physiochemical Properties of the Great Kwa River, Calabar, Cross River State, Nigeria

Paul Bassey Ekpo, Anthony John Umoyen, Nseobong Godwin Akpan, Inyang Paul Ekpo, Gabriel Abu & Cecilia James Sunday · International Journal of Environment and Climate Change · 2021

Background and Objectives: Human activities can increase the amount of pollutants in the environment leading to water pollution. The contamination of surface water and sediments by heavy metals can result in adverse health conditions of humans, due to the bioaccumulation of metal...

Open access Research Article 10.9734/ijecc/2021/v11i230356

A Pilot Study on Human CYP1B1 Gene Mutations in Three Cases with Primary Congenital Glaucoma in Calabar: Benefits for Disease Management

Roseline Duke, Mary E. Kooffreh, Anthony John Umoyen, Ekerette Emmanuel Ekerette, Owoidihe Monday Etukudo, Ernest Eze, Essien Okon, Nkoyo Ephriam & Michael Ozoje · Journal of Advances in Medicine and Medical Research · 2018

Background: Primary congenital glaucoma (PCG) is an inherited ocular congenital anomaly of the trabecular meshwork and anterior chamber angle, which results in optic nerve damage due to increase intraocular pressure if not properly managed. We explore CYPIBI gene mutations in thr...

Open access Research Article 10.9734/JAMMR/2018/35069

Evaluation of the Genetic Diversity of African Yam Bean (Sphenostylis stenocarpa (Hoechst. ex. A Rich.) Harms.) Using Seed Protein Marker

Josephine Imeh Usoroh, Effiom E. Eneobong, Solomon Okon Abraham & Anthony John Umoyen · Archives of Current Research International · 2019

Aims: The present research seeks to assess the genetic diversity of African yam bean accessions in Nigeria using seed protein marker; geared towards its genetic improvement and conservation. Introduction: African yam bean is an “Orphan Crop” highly nutritious and has been listed...

Open access Research Article 10.9734/acri/2019/v17i430117