University of Tehran

Melaleuca alternifolia (Australian tea tree) sits at a rare intersection of ethnomedicine and modern pharmacology. Rooted in Bundjalung Aboriginal practice for respiratory, dermatologic, and wound care, its essential oil (TTO) has since been validated as a multi-target agent. We synthesize advances spanning cultivation ecology, chemistry, mechanisms, and translation. Chemotyped oils (ISO 4730) are dominated by terpinen-4-ol-supported by γ-/α-terpinene, 1,8-cineole, and selected sesquiterpenes-whose coordinated actions destabilize microbial membranes, impair energy metabolism, modulate redox and inflammatory pathways (PPAR-γ, Nrf2-ARE), and, in cancer models, trigger mitochondrial apoptosis and autophagy. Across pathogens, TTO displays antibacterial, antifungal, antiviral, and antiparasitic activity, including effects on drug-resistant biofilms and ectoparasites (e.g., Demodex, scabies, head lice). Inflammation and oxidative stress are dampened via NF-κB/MAPK restraint and antioxidant support, aligning with clinical signals in dermatology and wound care. Crucially, nanotechnology (nanoemulsions/nanoemulgels, chitosan-alginate hydrogels, lipid nanocarriers, electrospun fibers) converts volatile, irritancy-prone oil into a controllable payload with improved stability, targeted release, and safety, while enabling co-delivery with standard drugs for dose-sparing synergy. Remaining gaps include chemotype standardization, exposure-response definition at target sites, and adequately powered, indication-specific trials with patient-centered endpoints. We outline priorities for quality control, rational combinations, and engineered delivery, and note how data-driven tools (e.g., composition-activity modeling) can accelerate optimization. Altogether, TTO exemplifies how cultural knowledge, ecological stewardship, and formulation science can converge to yield a next-generation phytotherapeutic for anti-infective, wound, dermatologic, and emerging anticancer applications.

• Behavioral adaptations follow a sequenced shift from retiming to rerouting to cancellation. • System performance degrades in parallel through slower speeds, higher VHT, and detours. • Flood, built-environment, and trip factors jointly structure mobility disruption. • Mobility losses are uneven across groups, modes, and activity types. • Integrated individual-system evidence remains limited across the literature. This systematic review synthesizes 61 peer-reviewed studies to clarify how urban flooding jointly reshapes travel behavior and transport system performance, and how these coupled changes evolve through feedback between traveler decisions and network disruption. The inquiry is motivated by the convergence of extreme rainfall and rapid urbanization, a combination that accelerates runoff, heightens exposure, and places sustained pressure on urban mobility. Three findings emerge. First, flood-induced mobility disruption unfolds as a sequenced and time-dependent process in which behavioral adaptation and system degradation progress together. Travelers adjust departure times, shift routes or modes as options narrow, and cancel trips, while system performance deteriorates in parallel through declining speeds, rising vehicle hours traveled, expanding detours, and suppressed demand. Second, the distribution of flood-related mobility loss is sharply unequal, with the greatest burdens borne by low-income, marginalized, transit-dependent, and physically constrained travelers whose limited flexibility heightens exposure during walking, waiting, and transferring, and with work and school travel absorbing many of the largest delays and cancellations. Third, the evidence base exhibits a methodological imbalance, as most studies examine either behavioral responses or system performance in isolation. This review identifies four future research directions: (i) tracing floods, behavior, and operations together through time, (ii) calibrating models to observed behavioral thresholds under flood conditions, (iii) shifting equity analysis to activity-space exposure, and (iv) expanding comparative and multimodal evidence across under-studied regions and non-motorized and informal modes. These insights establish a unified basis for understanding how urban flooding restructures mobility and for strengthening planning and modeling efforts under intensifying climate conditions.