The influence of hydration on the architectural rearrangement of normal and neoplastic human breast tissues

Abstract

In adult women, the water-content represents between 50% and 70% of the mass in normal breast tissues and this percentage is increased within diseased tissues. Water molecules play an essential role in the structural organization of biological tissues such as breast. Then, in this study, we have investigated the influence of the water molecules on the breast tissue organization and their role on the hierarchical tissue rearrangement promoted by tumor growth. SAXS and WAXS techniques were used to analyze healthy, benign and malignant human breast samples in native and lyophilized conditions. The scattering profiles in SAXS and WAXS regime of each tissue type in both conditions were compared in order to identify the structural transformation in these tissues and verify the water influence on the morphological arrangement of normal and pathological human breast tissues. From SAXS, changes at the axial periodicity of collagen fibrils were revealed. Additionally, when the water content has removed a peak at q = 4.17 nm −1 (that was present only in pathological samples) shifted in opposite directions within benign and malignant lesions. From WAXS, water and fatty acids were identified within native samples. However, after freeze-drying, only the fat component was observed in the scattering profiles. Therefore, when the water molecules were removed from the samples, structural changes associated with pathological progression were visible. From this, insights about their influence over the changes promoted by the tumor growth have been proposed. Finally, the findings of this study have the potential to provide valuable information to the development of new target therapy.

Biophysical and genetic cues regulating the structural remodeling of adipose tissue upon caloric excess

“…In coexistence with the characteristic multilamellar (h,k,l)=(001), (002), and (003) peaks, there is a broad peak at q = 0.27 Å -1 that is consistent with the presence of a disordered fat domain 21,22,23,24 . This is in line with an LD structure where fat packs in a multilamellar LC con guration towards the LD rim and is disordered at the core 4 .…”

Lipid droplet structural remodeling in adipose tissue upon caloric excess

“…In coexistence with the characteristic multilamellar (h,k,l)=(001), (002), and (003) peaks, there is a broad peak at q = 0.27 Å -1 that is consistent with the presence of a disordered fat domain (21)(22)(23)(24). This is in line with an LD structure where fat packs in a multilamellar LC configuration towards the LD rim and is disordered at the core (4).…”

Injectable Prevascularized Mature Adipose Tissues (iPAT) to Achieve Long‐Term Survival in Soft Tissue Regeneration

“…The same nonsignificant difference was also observed for the water content measurement (73.1% ± 2.4% for the iPAT grafts and 66.7% ± 5.2% for the liposuctioned ones), being as well in the in vivo range of 50–70% of the mass in normal breast tissues. [ 46 ] On the contrary, the evaluation of the triglycerides contents showed significantly different results, being 1.8 times higher for the liposuctioned grafts (1.4% ± 0.2% for the iPAT grafts and 2.5% ± 0.3% for the liposuctioned grafts), both being not so far from the in vivo where the values of lipids content vary from 3.6% to 37.6% of fat weight in the total breast weight. [ 47 ] The higher lipids content of the liposuctioned grafts can be easily observed in Figure 6e but cannot be linked to a higher tissue survival.…”