Hsp70 molecular chaperones: multifunctional allosteric holding and unfolding machines
The Hsp70 family of chaperones works with its co-chaperones, the nucleotide exchange factors and J-domain proteins, to facilitate a multitude of cellular functions. Central players in protein homeostasis, these jacks-of-many-trades are utilized in a variety of ways because of their ability to bind with selective promiscuity to regions of their client proteins that are exposed when the client is unfolded, either fully or partially, or visits a conformational state that exposes the binding region in a regulated manner. The key to Hsp70 functions is that their substrate binding is transient and allosterically cycles in a nucleotide-dependent fashion between high- and low-affinity states. In the past few years, structural insights into the molecular mechanism of this allosterically regulated binding have emerged and provided deep insight into the deceptively simple Hsp70 molecular machine that is so widely harnessed by nature for diverse cellular functions. In this review, these structural insights are discussed to give a picture of the current understanding of how Hsp70 chaperones work.
Publication date: Available online 17 July 2019Source: Journal of Integrative MedicineAuthor(s): Pierre Watcho, Ismaelle Rosine Mpeck, Patrick Brice Defo Deeh, Modeste W.eu-Nya, Esther Ngadjui, Georges Romeo Fozin Bonsou, Pierre Kamtchouing, Albert KamanyiAbstractObjectiveCyclophosphamide (CP) is commonly used to treat some cancers, but its clinical efficacy is also linked with testicular toxicity. We investigated the effects of aqueous extract (AE) and methanolic extract (ME) of Helichrysum odoratissimum for reducing CP-induced reproductive toxicity in male rats.MethodsIn addition to a normal control (group 1), drugs or v...
This study used Oswestry Disability Index (ODI)-self-comparison and showed that acupuncture treatments for lumber disc herniation and sciatica demonstrated significant improvement in long term clinical outcomes. A total of 112 lumbar disc herniation and sciatica cases were treated with electric acupuncture for pain relief and function improvement from July 1998 to December 2006.ResultsAll the 112 cases filled out the ODI forms prior to receiving treatment. Among the 112 patients, 23 of them did not finish the 6-week treatments. 89 cases were evaluated with ODI after 6-week acupuncture treatments. Of those 89 cases, 67 case...
ConclusionsThe therapeutic effect of acupuncture and moxibustion by soothing liver and regulating mind can obviously improve the quality of life of depression elders.
ConclusionRV Dysfunction according to our definition in first Anterior MI occurred in (55%) of the study population. Independent predictors for Abnormal RV function were; LCX mid or proximal affection, eventful procedure, occurrence of no reflow, Glucose level, LVESD, LVEDD and LV EF.
Publication date: Available online 17 July 2019Source: Global HeartAuthor(s): Jessica Ying-Yi Xie, Matthew R. Solomons, Mahmood Ahmad
Publication date: Available online 18 July 2019Source: American Heart JournalAuthor(s): Nwora Lance Okeke, Allison R. Webel, Hayden B. Bosworth, Angela Aifa, Gerald S. Bloomfield, Emily Choi, Sarah Gonzales, Sarah Hale, Corrilynn O. Hileman, Virginia Kidwell, Charles Muiruri, Megan Oakes, Julie Schexnayder, Valerie Smith, Rajesh Vedanthan, Chris T. Longenecker
Conclusion: Experiences of being sexually harassed correlate among adolescents with high social anxiety but also with high self-esteem. Sexual harassment among adolescents may partly be explained as inept ways of showing interest, but it may nevertheless have detrimental effects on the well-being of the those subjected to it. PMID: 31311376 [PubMed - as supplied by publisher]
Publication date: Available online 17 July 2019Source: Journal of Geriatric OncologyAuthor(s): Mina S. Sedrak, Daneng Li, Louise C. Walter, Karen Mustian, Kevin P. High, Beverly Canin, Supriya G. Mohile, William Dale, Can-Lan Sun
Publication date: Available online 17 July 2019Source: Journal of Geriatric OncologyAuthor(s): Melisa L. Wong, Stuart M. Lichtman, Gary R. Morrow, John Simmons, Tomma Hargraves, Cary P. Gross, Jennifer L. Lund, Lisa M. Lowenstein, Louise C. Walter, Cara L. McDermott, Supriya G. Mohile, Harvey Jay Cohen
ConclusionIn a cohort of 40 older adults with newly diagnosed multiple myeloma, three frailty indices have differing approaches to operationalizing frailty resulting, in different patients being categorized as frail. Little agreement existed between the models. Further studies are needed to explore the utility of these models in predicting treatment toxicity and prognosis.