Sensorineural hearing loss (SNHL), caused by pathology in the cochlea, is the most common type of hearing loss in humans. It is generally irreversible with very few effective pharmacological treatments available to prevent the degenerative changes or minimise the impact. Part of this has been attributed to difficulty of translating “proof-ofconcept” for novel treatments established in small animal models to human therapies. There is an increasing interest in the use of sheep as a large animal model. In this article, we review the small and large animal models used in preclinical hearing research such as mice, rats, chinchilla, guinea pig, rabbit, cat, monkey, dog, pig, and sheep to humans, and compare the physiology, inner ear anatomy, and some of their use as model systems for SNHL, including coch‑ lear implantation surgeries. Sheep have similar cochlear anatomy, auditory threshold, neonatal auditory system development, adult and infant body size, and number of birth as humans. Based on these comparisons, we suggest that sheep are well-suited as a potential translational animal model that bridges the gap between rodent model research to the clinical use in humans. This is especially in areas looking at changes across the life-course or in spe‑ cific areas of experimental investigation such as cochlear implantation and other surgical procedures, biomedical device development and age-related sensorineural hearing loss research. Combined use of small animals for research that require higher throughput and genetic modification and large animals for medical translation could greatly accelerate the overall translation of basic research in the field of auditory neuroscience from bench to clinic.

Objective: To review the implementation of essential reproductive health services in Eastern Visayas, Philippines.Materials and Methods: We reviewed four national policies through a qualitative research design using a series of key informant interviews conducted with service providers and focus group discussions with service beneficiaries.Results: There was a gap between the policies and the implementation of reproductive health services in the Eastern Visayas region. This gap is mainly due to the refusal of service providers to cater to teenagers’ needs regarding reproductive health services. This has resulted in teenagers hesitating to seek reproductive health services and related support from primary healthcare facilities. Service beneficiaries have also reported on the unavailability of several reproductive health services in primary healthcare facilities.Conclusion: The gap between national policies and program implementation must be bridged. This can be achieved by creating culturally-specific policies that can improve the implementation of reproductive health programs in the study areas.

BACKGROUND

While adolescent pregnancies in the Eastern Visayas region of the Philippines have declined over the past five years, young mothers remain at risk of repeat pregnancies, which continue to expose them and their children to health and socioeconomic risks in this vulnerable region.

This study aims to collect baseline information on mothers who experienced early pregnancy in Eastern Visayas and to identify significant differences in maternal characteristics based on type of residence and age. The findings will be used by a nongovernmental organization to plan and develop targeted interventions for this vulnerable population.

This study utilized a descriptive cross-sectional design to collect data on mothers who experienced early pregnancy in four selected provinces of Eastern Visayas. Data were analyzed using descriptive statistics, chi-square tests, an independent t-test, and the Mann-Whitney U test.

A total of 296 mothers participated in the survey. Among them, 80.1% were in high school during their first pregnancy, and 88.2% were unemployed at the time of the study. The youngest age at first pregnancy was 12 years. The participants' male partners were at least five years older (39.8%) and ten years older (11.1%). Significant differences were observed in the use of family planning method, number and status of pregnancies, and history of preterm labor.

Results suggest that adolescent pregnancy remains a public health concern in Eastern Visayas, particularly among lowincome teenagers with limited educational attainment, whose parents also had minimal education. The youngest reported age of pregnancy was 12 years. Therefore, efforts should focus on increasing access to family planning services, providing comprehensive reproductive health education, and enhancing maternal and child health services.

Objectives. Polymorphisms in metabolic genes which alter rates of bioactivation and detoxification have been shown to modulate susceptibility to colorectal cancer. This study sought to evaluate the colorectal cancer risk from environmental factors and to do polymorphism studies on genes that code for Phase I and II xenobiotic metabolic enzymes among Filipino colorectal cancer patients and matched controls. Methods. A total of 224 colorectal cancer cases and 276 controls from the Filipino population were genotyped for selected polymorphisms in GSTM1, GSTP1, GSTT1, NAT1 and NAT2. Medical and diet histories, occupational exposure and demographic data were also collected for all subject participants.Results. Univariate logistic regression of non-genetic factors identified exposure to UV (sunlight) (OR 1.99, 95% CI: 1.16-3.39) and wood dust (OR 2.66, 95% CI: 1.21-5.83) and moldy food exposure (OR 1.61, 95% CI:1.11-2.35) as risk factors; while the NAT2*6B allele (recessive model OR 1.51, 95% CI :1.06-2.16; dominant model OR 1.87, 95% CI: 1.05-3.33) and homozygous genotype (OR 2.19, 95% CI: 1.19-4.03) were found to be significant among the genetic factors. After multivariate logistic regression of both environmental and genetic factors, only UV radiation exposure (OR 2.08, 95% CI: 1.21-3.58) and wood dust exposure (OR 2.08, 95% CI: 0.95-5.30) remained to be significantly associated with increasing colorectal cancer risk in the study population.Conclusion. This study demonstrated that UV sunlight and wood dust exposure play a greater role in influencing colorectal cancer susceptibility than genotype status from genetic polymorphisms of the GST and the NAT` genes.
Colorectal Neoplasms ; Polymorphism, Genetic