The COVID-19 pandemic's effects on mental and psychosocial health in the Philippines: A scoping review.

Low- and middle-income countries (LMICs) remained at elevated risk for the effects of the COVID-19 pandemic because of persistent stressors to their health systems. Simultaneously facing high infection rates, strict containment measures and natural disasters, the Philippines provides important grounds for health research in LMICs. This review examined how the COVID-19 pandemic affected mental and psychosocial health in the Philippines. This scoping review included literature in English from 2020 to mid-2022 from PubMed, PsycInfo and SCOPUS, and used the PRISMA-ScR and PCC-question model. Two independent reviewers conducted blind article screening and data extraction using COVIDENCE software, followed by consensus building, data charting and analyses. This work identified 405 publications across PubMed (N = 56), PsycInfo (N = 106) and SCOPUS (N = 243), of which 76 articles addressed the Philippines. Article types included 54 research articles, 10 opinion pieces, 4 literature reviews, 6 letters to journals, 1 study protocol and 1 other report. These findings focused primarily on health professionals (N = 23) and educators/learners (N = 22) and reported mostly on moderate-to-severe clinical outcomes such as fear, depression, anxiety or stress. Coping behaviors, like resiliency and other ways of adapting to the pandemic, including religious, spiritual and community-oriented approaches highlighted experiences with stringent infection prevention and control measures to contain COVID-19 in the Philippines. The COVID-19 pandemic brought severe challenges to mental and psychosocial health in the Philippines. The literature focused mostly on healthcare workers and educators/learners, and moderate-to-severe mental health outcomes in these groups. There is a need to expand studies to other sociodemographic groups and communities across the Philippines. Future work stands to benefit from more in-depth qualitative, mixed methods, longitudinal and representative quantitative research in LMICs following this pandemic. Literature reviews remain important to synthesize post-pandemic experiences by providing context for future studies and health practice in the Philippines and other LMICs.

Cryptosporidium infection causes undernutrition and, conversely, weanling undernutrition intensifies infection.

Cryptosporidium parvum is a leading pathogen in children in developing countries. To investigate whether early postnatal malnutrition leads to heavier C. parvum infections, we assessed intestinal adaptation and parasite load in suckling mice during the first 2 wk of life, analogous to the first postnatal yr in humans. Undernutrition was induced by daily C57BL6J pup separation from lactating dams. Half of the pups were separated daily, for 4 hr on day 4, 8 hr on day 5, and for 12 hr from day 6 until day 14. On day 6, each pup received an oral inoculum of 10(5) to 10(7) parasites in 10-25 microl of PBS. Littermate controls received PBS alone. Stools were assessed from days 8, 11, and 14 for oocyst counts. Mice were killed on day 14, 8 days postinoculation, at the peak of the infection. Ileal and colon segments were obtained for histology, real-time and reverse transcriptase PCR, and immunoassays. Villus and crypt lengths and cross-sectional areas were also measured. Undernourished and nourished mice infected with excysted 10(6) or 10(7) oocysts exhibited the poorest growth outcomes compared with their uninfected controls. Nourished 10(6)-infected mice had comparable weight decrements to uninfected undernourished mice. Body weight and villi were additively affected by malnutrition and cryptosporidiosis. Hyperplastic crypts and heavier inflammatory responses were found in the ilea of infected malnourished mice. Undernourished infected mice exhibited greater oocyst shedding, TNF-alpha and IFN-gamma intestinal levels, and mRNA expression compared to nourished mice infected with either 10(5) or 10(6) oocysts. Taken together, these findings show that Cryptosporidium infection can cause undernutrition and, conversely, that weanling undernutrition intensifies infection and mucosal damage.

Detection of epithelial-cell injury, and quantification of infection, in the HCT-8 organoid model of cryptosporidiosis.

BACKGROUND: Intestinal cells grown in microgravity produce a three-dimensional tissue assembly, or "organoid," similar to the human intestinal mucosa, making it an ideal model for enteric infections such as cryptosporidiosis. METHODS: HCT-8 cells were grown in a reduced-gravity, low-shear, rotating-wall vessel (RWV) and were infected with Cryptosporidium parvum oocysts. Routine and electron microscopy (EM), immunolabeling with fluorescein-labeled Vicia villosa lectin and phycoerythrin-labeled monoclonal antibody to a 15-kD surface-membrane protein, and quantitative polymerase chain reaction (qPCR) using probes for 18s rRNA of C. parvum and HCT-8 cells were performed. RESULTS: The RWV allowed development of columnar epithelium-like structures. Higher magnification revealed well-developed brush borders at the apical side of the tissue. Incubation with C. parvum resulted in patchy disruption of the epithelium and, at the surface of several epithelial cells, in localized infection with the organism. EM revealed irregular stunting of microvilli, foci of indistinct tight junctions, and areas of loose paracellular spaces. qPCR showed a 1.85-log (i.e., 70-fold) progression of infection from 6 h to 48 h of incubation. CONCLUSION: The HCT-8 organoid displayed morphologic changes indicative of successful and quantifiable infection with C. parvum. The HCT-8 organoid-culture system may have application in interventional in vitro studies of cryptosporidiosis.