"was reported to decrease" is correct and usable in written English.
You can use it when talking about a decrease that has been reported in a specific figure, trend, etc. For example: "The stock market was reported to decrease by 4% today."
PBR activation was reported to decrease innate immunity and host defense.
Cell temperature was reported to decrease to 30 °C for 200× CPV using impingement cooling.
Acetylation of residue K433 was reported to decrease PKM2 activity through inhibiting FBP association (Lv et al., 2013).
Water-soluble concentration of Zn was reported to decrease by 41% at the end of the composting period.
Background: Oral administration of ferrous-sulfate was reported to decrease intestinal absorption of mycophenolate mofetil (MMF) in healthy Japanese individuals by 90%.
Wire-guided cannulation (WGC) was reported to decrease post-ERCP pancreatitis (PEP), but risk factors for PEP in WGC are not fully elucidated.
The increase of EPA was reported to decrease the amount of AA in platelet and reduce the TXA2 dependent platelet aggregation [17].
Methanol crossover was reported to decrease when the thickness of the membrane increases, so the ETFE-based membrane compares favourably to Nafion® membranes.
Whereas oxygen permeability of poly[1- trimethylsilyl -1-propyne] was repoly[1- trimethylsilyl -1-propyneime, these high oxygen poly[1- trimethylsilyl -1-propyneveral months.
In agreement with that, L-glutamic acid was reported to decrease serotonin synthesis, release in rat rostral and caudal rhombencephalic raphe cells culture and cause an increase in serotonin metabolism (Becquet et al., 1993).
In one of the few studies carried out on this, sumatriptan was reported to decrease the amplitude of NO release but was seen to enhance extracellular superoxide concentrations in both lissencephalic and gyrencephalic cortices during CSD [147].
