Functional and mechanistic studies of a phytogenic formulation, Shrimp Best, in growth performance and vibriosis in whiteleg shrimp.

Climate change and disease threaten shrimp farming. Here, we studied the beneficial properties of a phytogenic formulation, Shrimp Best (SB), in whiteleg shrimp. Functional studies showed that SB dose-dependently increased shrimp body weight and decreased feed conversion ratio. We found that SB protected against Vibrio parahaemolyticus as evidenced by survival rate, bacterial load, and hepatopancreatic pathology in shrimp. Finally, we explored the likely mechanism by which SB affects growth performance and vibriosis in shrimp. The 16S rRNA sequencing data showed that SB increased 6 probiotic genera and decreased 6 genera of pathogenic bacteria in shrimp. Among these, SB increased the proportion of Lactobacillus johnsonii and decreased that of V. parahaemolyticus in shrimp guts. To dissect the relationship among SB, Lactobacillus and Vibrio, we investigated the in vitro regulation of Lactobacillus and Vibrio by SB. SB at ≥ 0.25 µg/mL promoted L. johnsonii growth. Additionally, L. johnsonii and its supernatant could inhibit V. parahaemolyticus. Furthermore, SB could up-regulate five anti-Vibrio metabolites of L. johnsonii, which caused bacterial membrane destruction. In parallel, we identified 3 fatty acids as active compounds from SB. Overall, this work demonstrated that SB improved growth performance and vibriosis protection in shrimp via the regulation of gut microbiota.

The Javanese Cultural Beliefs and Practices Among Patients With End-Stage Renal Disease Undergoing Hemodialysis.

Introduction: Poor prognosis and higher mortality of chronic kidney disease are linked with cultural beliefs and practices. This study explored cultural beliefs and practices of Javanese people with end-stage renal disease undergoing hemodialysis for ≥5 years. Methods: A qualitative narrative inquiry was applied in this study. Data were collected through in-depth narrative interviews, followed by text messages, calls, and audio-visual calls for 6 weeks. Results: There were 14 participants; their mean age was 51.15 years and hemodialysis duration was 5 years and 2 months up to 10 years and 9 months. Four themes emerged: life-and-death acceptance, expectation of end-of-life care, contemplation of withdrawal from hemodialysis, and wishing for a good death. Discussion: Life values guided the ability to survive for the individual. Adherence to renal disease management regimen clashed with cultural values on occasions, such as social gatherings. Therefore, the unmet needs of patients should be addressed with a transcultural approach to modify personal health behaviors.