scholarly journals piRNAs regulate a Hedgehog germline-to-soma pro-aging signal

2021 ◽  
Author(s):  
Cheng Shi ◽  
Coleen T Murphy
Keyword(s):  
Resource Allocation ◽  
Transcriptional Regulation ◽  
Reproductive System ◽  
Hedgehog Signaling ◽  
Early Death ◽  
Reproductive Timing ◽  
Steroid Signaling ◽  
Pirna Pathway ◽  
Encoding Genes

The reproductive system regulates the aging of the soma through competing anti- and pro-aging signals. Germline removal extends somatic lifespan through conserved pathways including Insulin, mTOR, and steroid signaling, while germline hyperactivity cuts lifespan short through mechanisms that remain elusive. Here, we show that mating-induced germline hyperactivity leads to the dramatic downregulation of piRNAs, which in turn releases silencing of their targets, including the Hedgehog-like ligand encoding genes wrt-1 and wrt-10, ultimately causing somatic collapse and early death. Germline-produced Hedgehog signals require PTR-6 and PTR-16 receptors for mating-induced body shrinking and lifespan shortening. Our results reveal an unconventional role of the piRNA pathway in transcriptional regulation of Hedgehog signaling, as well as a new role of Hedgehog signaling in the regulation of longevity and somatic maintenance. Our data suggest that Hedgehog signaling is controlled by the tunable piRNA pathway to encode the previously unknown germline-to-soma pro-aging signal. Mating-induced downregulation of piRNAs in the germline and subsequent signaling to the soma via the Hedgehog pathway enables the animal to tune its somatic resource allocation in response to germline needs to optimize reproductive timing and survival.

ROLE OF ULTRASOUND IN THE DETECTION OF RECURRENT OVARIAN CANCER

2020 ◽  
Vol 6 (1) ◽  
pp. 23-31
Author(s):  
M. Alisherova ◽  
◽  
M. Ismailova
Keyword(s):  
Ovarian Cancer ◽  
Surgical Treatment ◽  
Reproductive System ◽  
Malignant Tumors ◽  
Recurrent Ovarian Cancer ◽  
Primary Diagnosis ◽  
Female Reproductive System

Currently, there are no standard approaches to monitoring patients with ovarian cancer (OC). While the role of ultrasound (US) has been identified in the primary diagnosis of OS, it is still controversial during the subsequent surgical treatment of OC. In world statistics, ovarian cancer is consistently among the four main localizations of malignant tumors of the female reproductive system, along with tumors of the breast, body and cervix.

scholarly journals Species Comparison of the Role of p38 MAP Kinase in the Female Reproductive System

2009 ◽  
Vol 22 (2) ◽  
pp. 109-124 ◽  
Author(s):  
Zaher A. Radi ◽  
Rosemary A. Marusak ◽  
Dale L. Morris
Keyword(s):  
Map Kinase ◽  
Reproductive System ◽  
P38 Map Kinase ◽  
Female Reproductive System ◽  
Species Comparison

scholarly journals Emerging roles of cancer-testis antigenes, semenogelin 1 and 2, in neoplastic cells

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Oleg Shuvalov ◽  
Alyona Kizenko ◽  
Alexey Petukhov ◽  
Olga Fedorova ◽  
Alexandra Daks ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Tumor Cells ◽  
Reproductive System ◽  
Seminal Fluid ◽  
Cancer Development ◽  
Migration And Invasion ◽  
Malignant Cells ◽  
Cancer Testis

AbstractCancer-testicular Antigens (CTAs) belong to a group of proteins that under normal conditions are strictly expressed in a male’s reproductive tissues. However, upon malignisation, they are frequently re-expressed in neoplastic tissues of various origin. A number of studies have shown that different CTAs affect growth, migration and invasion of tumor cells and favor cancer development and metastasis. Two members of the CTA group, Semenogelin 1 and 2 (SEMG1 and SEMG2, or SEMGs) represent the major component of human seminal fluid. They regulate the motility and capacitation of sperm. They are often re-expressed in different malignancies including breast cancer. However, there is almost no information about the functional properties of SEMGs in cancer cells. In this review, we highlight the role of SEMGs in the reproductive system and also summarize the data on their expression and functions in malignant cells of various origins.

scholarly journals Cysteine-Rich Hydrophobin Gene Family: Genome Wide Analysis, Phylogeny and Transcript Profiling in Cordyceps militaris

2021 ◽  
Vol 22 (2) ◽  
pp. 643
Author(s):  
Xiao Li ◽  
Fen Wang ◽  
Yanyan Xu ◽  
Guijun Liu ◽  
Caihong Dong
Keyword(s):  
Life Cycle ◽  
Pathogenic Fungi ◽  
Class Ii ◽  
Cordyceps Militaris ◽  
Transcript Profiling ◽  
Saprotrophic Fungi ◽  
Genome Wide Analysis ◽  
Genome Wide ◽  
Encoding Genes

Hydrophobins are a family of small secreted proteins found exclusively in fungi, and they play various roles in the life cycle. In the present study, genome wide analysis and transcript profiling of the hydrophobin family in Cordyceps militaris, a well-known edible and medicinal mushroom, were studied. The distribution of hydrophobins in ascomycetes with different lifestyles showed that pathogenic fungi had significantly more hydrophobins than saprotrophic fungi, and class II members accounted for the majority. Phylogenetic analysis of hydrophobin proteins from the species of Cordyceps s.l. indicated that there was more variability among the class II members than class I. Only a few hydrophobin-encoding genes evolved by duplication in Cordyceps s.l., which was inconsistent with the important role of gene duplication in basidiomycetes. Different transcript patterns of four hydrophobin-encoding genes during the life cycle indicated the possible different functions for each. The transcripts of Cmhyd2, 3 and 4 can respond to light and were related with the photoreceptors. CmQHYD, with four hydrophobin II domains, was first found in C. militaris, and multi-domain hydrophobins were only distributed in the species of Cordycipitaceae and Clavicipitaceae. These results could be helpful for further function research of hydrophobins and could provide valuable information for the evolution of hydrophobins.

Stiffen the sinews, summon up the blood, and strain upon the start: enfranchising the medical profession for clinically proximate advocacy of improved healthcare

2021 ◽  
pp. 103985622110250
Author(s):  
Jeffrey C L Looi ◽  
Stephen Allison ◽  
Stephen R Kisely ◽  
Tarun Bastiampillai
Keyword(s):  
Resource Allocation ◽  
Health Systems ◽  
Medical Profession ◽  
Continuing Professional Development ◽  
Health Advocacy ◽  
Public And Private ◽  
Medical Practitioners ◽  
The Public ◽  
Team Activity

Objective: To discuss and reflect upon the role of medical practitioners, including psychiatrists, as health advocates on behalf of patients, carers and staff. Conclusions: Health advocacy is a key professional competency of medical practitioners, and is part of the RANZCP framework for training and continuing professional development. Since advocacy is often a team activity, there is much that is gained experientially from volunteering and working with other more experienced health advocates within structurally and financially independent (of health systems and governments) representative groups (RANZCP, AMA, unions). Doctors may begin with clinically proximate advocacy for improved healthcare in health systems, across the public and private sectors. Health advocacy requires skill and courage, but can ultimately influence systemic outcomes, sway policy decisions, and improve resource allocation.

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