1.Implications of aging and the endoplasmic reticulum unfolded protein response on the molecular modality of breast cancer.
Rinki MINAKSHI ; Safikur RAHMAN ; Arif Tasleem JAN ; Ayyagari ARCHANA ; Jihoe KIM
Experimental & Molecular Medicine 2017;49(11):e389-
The endoplasmic reticulum (ER) is an important subcellular organelle that is involved in numerous activities required to achieve and maintain functional proteins in addition to its role in the biosynthesis of lipids and as a repository of intracellular Ca²⁺. The inability of the ER to cope with protein folding beyond its capacity causes disturbances that evoke ER stress. Cells possess molecular mechanisms aimed at clearing unwanted cargo from the ER lumen as an adaptive response, but failing to do so navigates the system towards cell death. This systemic approach is called the unfolded protein response. Aging insults cells through various perturbations in homeostasis that involve curtailing ER function by mitigating the expression of its resident chaperones and enzymes. Here the unfolded protein response (UPR) cannot protect the cell due to the weakening of its protective arm, which exacerbates imbalanced homeostasis. Aging predisposed breast malignancy activates the UPR, but tumor cells maneuver the mechanistic details of the UPR, favoring tumorigenesis and thereby eliciting a treacherous condition. Tumor cells exploit UPR pathways via crosstalk involving various signaling cascades that usher tumor cells to immortality. This review aims to present a collection of data that can delineate the missing links of molecular signatures between aging and breast cancer.
Aging*
;
Arm
;
Breast Neoplasms*
;
Breast*
;
Carcinogenesis
;
Cell Death
;
Endoplasmic Reticulum*
;
Homeostasis
;
Organelles
;
Protein Folding
;
Unfolded Protein Response*
3.Frequency of group A rotavirus with mixed G and P genotypes in bovines: predominance of G3 genotype and its emergence in combination with G8/G10 types.
Yashpal S MALIK ; Kuldeep SHARMA ; Nirupama VAID ; Somendu CHAKRAVARTI ; K M CHANDRASHEKAR ; Sanjay S BASERA ; Rashmi SINGH ; MINAKSHI ; Gaya PRASAD ; Baldev R GULATI ; Kiren N BHILEGAONKAR ; Awadh B PANDEY
Journal of Veterinary Science 2012;13(3):271-278
The present study describes the genotypic distribution of rotaviruses (RVs) in an Indian bovine population with unexpectedly higher proportions of G3 alone or in combination of G8/G10. PCR-genotyping confirmed that 39.4% (13/33) of the prevalent RVs were the G3 type while 60.6% (20/33) were dual G3G10 or G3G8 types. P typing revealed that 93.9% (31/33) of the samples were P[11] while 6.1% (2/33) possessed a dual P[1]P[11] type. Sequence analysis of the VP7 gene from G3 strains viz. B-46, 0970, and BR-133 showed that these strains had sequence identities of 90.5% to 100% with other bovine G3 strains. The highest identity (98.9% to 100%) was observed with RUBV3 bovine G3 strains from eastern India. The G3 strains (B-46, 0970, and BR-133) showed 97.5% to 98.8% sequence homologies with the Indian equine RV strain Erv-80. Phylogenetic analysis demonstrated that G3 strains clustered with bovine RUBV3 and J-63, and equine Erv-80 G3. Overall, these results confirmed that the incidence of infection by RVs with the G3 genotype and mixed genotypes in the bovine population was higher than previously predicted. This finding reinforces the importance of constantly monitoring circulating viral strains with the G3 genotype in future surveillance studies.
Animals
;
Cattle
;
Cattle Diseases/epidemiology/*virology
;
Desert Climate
;
Feces/virology
;
Genotype
;
India/epidemiology
;
Molecular Sequence Data
;
Phylogeny
;
RNA, Viral/genetics
;
Reverse Transcriptase Polymerase Chain Reaction/veterinary
;
Rotavirus/classification/*genetics/isolation & purification
;
Rotavirus Infections/epidemiology/*veterinary/virology
;
Sequence Analysis, Protein/veterinary
;
Sequence Analysis, RNA/veterinary
;
Sequence Homology
;
Tropical Climate
4.South Asian Working Action Group on SARCOpenia (SWAG-SARCO) e A consensus document
Minakshi DHAR ; Nitin KAPOOR ; Ketut SUASTIKA ; Mohammad E. KHAMSEH ; Shahjada SELIM ; Vijay KUMAR ; Syed Abbas RAZA ; Umal AZMAT ; Monika PATHANIA ; Yovan Parikshat Rai MAHADEB ; Sunny SINGHAL ; Mohammad Wali NASERI ; IGP Suka ARYANA ; Subarna Dhoj THAPA ; Jubbin JACOB ; Noel SOMASUNDARAM ; Ali LATHEEF ; Guru Prasad DHAKAL ; Sanjay KALRA
Osteoporosis and Sarcopenia 2022;8(2):35-57
The South Asian population is rapidly ageing and sarcopenia is likely to become a huge burden in this region if proper action is not taken in time. Several sarcopenia guidelines are available, from the western world and from East Asia. However, these guidelines are not fully relevant for the South Asian healthcare ecosystem. South Asia is ethnically, culturally, and phenotypically unique. Additionally, the region is seeing an increase in non-communicable lifestyle disease and obesity. Both these conditions can lead to sarcopenia. However, secondary sarcopenia and sarcopenic obesity are either not dealt with in detail or are missing in other guidelines. Hence, we present a consensus on the screening, diagnosis and management of sarcopenia, which addresses the gaps in the current guidelines. This South Asian consensus gives equal importance to muscle function, muscle strength, and muscle mass; provides cost-effective clinical and easy to implement solutions; highlights secondary sarcopenia and sarcopenic obesity; lists commonly used biomarkers; reminds us that osteo-arthro-muscular triad should be seen as a single entity to address sarcopenia; stresses on prevention over treatment; and prioritizes nonpharmacological over pharmacological management. As literature is scarce from this region, the authors call for more South Asian research guided interventions.