Joseph W. Kemnitz

ORCID: 0000-0001-6511-404X
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About
Contact & Profiles
Research Areas
  • Adipose Tissue and Metabolism
  • Transplantation: Methods and Outcomes
  • Diet and metabolism studies
  • Organ Transplantation Techniques and Outcomes
  • Regulation of Appetite and Obesity
  • Dietary Effects on Health
  • Genetics, Aging, and Longevity in Model Organisms
  • Stress Responses and Cortisol
  • Renal Transplantation Outcomes and Treatments
  • Birth, Development, and Health
  • Primate Behavior and Ecology
  • Ovarian function and disorders
  • Organ and Tissue Transplantation Research
  • Viral Infections and Immunology Research
  • Adipokines, Inflammation, and Metabolic Diseases
  • Hormonal and reproductive studies
  • Endometriosis Research and Treatment
  • Neonatal Respiratory Health Research
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Neuroscience of respiration and sleep
  • Liver Disease and Transplantation
  • Biomedical Text Mining and Ontologies
  • Hypothalamic control of reproductive hormones
  • Gestational Diabetes Research and Management
  • Congenital Diaphragmatic Hernia Studies

University of Wisconsin–Madison
2011-2022

Health Alliance International
2013-2014

Geriatric Research Education and Clinical Center
2005

Institute on Aging
1996-2004

Memorial
2004

Kliniken Essen-Mitte
1997

Hôpital d'Hautepierre
1996

Essen University Hospital
1995

Medizinische Hochschule Hannover
1987-1991

Hochschule Hannover
1990

Caloric restriction (CR), without malnutrition, delays aging and extends life span in diverse species; however, its effect on resistance to illness mortality primates has not been clearly established. We report findings of a 20-year longitudinal adult-onset CR study rhesus monkeys aimed at filling this critical gap research. In population macaques maintained the Wisconsin National Primate Research Center, moderate lowered incidence aging-related deaths. At time point reported, 50% control...

10.1126/science.1173635 article EN Science 2009-07-09

Abstract Caloric restriction (CR) without malnutrition extends lifespan and delays the onset of age-related disorders in most species but its impact nonhuman primates has been controversial. In late 1980s two parallel studies were initiated to determine effect CR rhesus monkeys. The University Wisconsin study reported a significant positive on survival, National Institute Aging detected no survival effect. Here we present direct comparison longitudinal data from both including bodyweight,...

10.1038/ncomms14063 article EN cc-by Nature Communications 2017-01-17

Caloric restriction (CR) without malnutrition increases longevity and delays the onset of age-associated disorders in short-lived species, from unicellular organisms to laboratory mice rats. The value CR as a tool understand human ageing relies on translatability CR’s effects primates. Here we show that significantly improves age-related all-cause survival monkeys long-term ~30% restricted diet since young adulthood. These data contrast with observations 2012 NIA intramural study report,...

10.1038/ncomms4557 article EN cc-by-nc-nd Nature Communications 2014-04-01

A high-quality rhesus macaque genome Genome technology has improved substantially since the first full organismal genomes were generated. Applying new technology, Warren et al. refined of macaque, a model nonhuman primate. Long-read and other recent advances in sequencing applied to generate with far fewer gaps helped refine locations numbers repetitive elements. Furthermore, authors performed resequencing among populations identify genetic variability macaque. Thus, previously incomplete...

10.1126/science.abc6617 article EN Science 2020-12-18

Insulin sensitivity and glucose tolerance typically decline during later life. In a multidimensional randomized trial of the effects dietary restriction started in adulthood on processes aging, we are studying insulin glucoregulation longitudinally control (C, n = 15, fed defined diet ad libitum for 6–8 h/day) restricted (R, 30% less than C) monkeys using Modified Minimal Model method. Linear rates change were calculated individual animals through 30 mo treatment compared between groups....

10.1152/ajpendo.1994.266.4.e540 article EN AJP Endocrinology and Metabolism 1994-04-01

Dietary restriction (DR) retards aging processes and extends maximum life span in rodents simpler animals. We initiated a study 30 adult (8–14 years old) male rhesus monkeys to determine whether or not are retarded by adult-onset DR primate species herein report results from the experiment's first year. Following 3–6 month period when baseline data were obtained, 15 animals assigned control group given free access semipurified diet for 6–8 hours per day. The other fed same but at 70% of...

10.1093/geronj/48.1.b17 article EN Journal of Gerontology 1993-01-01

Activation of the peroxisome proliferator-activated receptor gamma (PPAR-γ) has been proposed as a possible neuroprotective strategy to slow down progression early Parkinson's disease (PD). Here we report preclinical data on use PPAR-γ agonist pioglitazone (Actos®; Takeda Pharmaceuticals Ltd.) in paradigm resembling PD nonhuman primates.Rhesus monkeys that were trained perform battery behavioral tests received single intracarotid arterial injection 20 ml saline containing 3 mg dopaminergic...

10.1186/1742-2094-8-91 article EN cc-by Journal of Neuroinflammation 2011-08-05

A dramatic rise in obesity has occurred among humans within the last several decades. Little is known about whether similar increases have animals inhabiting human-influenced environments. We examined samples collectively consisting of over 20 000 from 24 populations (12 divided separately into males and females) representing eight species living with or around industrialized societies. In all populations, estimated coefficient for trend body weight time was positive (i.e. increasing). The...

10.1098/rspb.2010.1890 article EN Proceedings of the Royal Society B Biological Sciences 2010-11-24

Auxiliary liver transplantation (LT) is a special procedure of LT which could be proposed to patients with fulminant hepatic failure (FHF) and has for aim that complete regeneration the native (NL) left in place will allow graft recipient resume normal function after allograft withdrawal. We report 30 cases auxiliary performed FHF 12 European centers. Twenty-five were younger than 50 years. The cause was hepatitis A virus (HAV) 4 patients, B (HBV) 7, paracetamol overdose 5, ecstasy 2,...

10.1002/hep.510230528 article EN Hepatology 1996-05-01

This study determined whether timing of prenatal androgen excess resulted in differential impairment insulin-glucose homeostasis adult female rhesus monkeys. Ten monkeys exposed to testosterone propionate starting on gestational day 40 (early treated), 9 females between days 100-115 (late and 15 control were studied. The modified minimal model was used examine various measures derived from an i.v. glucose tolerance test, with regression analysis performed these variables body mass index. In...

10.1210/jcem.85.3.6453 article EN The Journal of Clinical Endocrinology & Metabolism 2000-03-01

The antidiabetic effects of pioglitazone hydrochloride were evaluated in 6 spontaneously obese, insulin-resistant rhesus monkeys. animals studied during six successive 2-wk treatment phases separated by rest periods: two placebo phases; 0.3, 1.0, and 3.0 mg · kg−1 day−1 a final phase. During the second week each phase, serum insulin (immunoreactive [IRI]), plasma glucose, triglyceride (TG) levels measured after an overnight fast standardized meal. Blood pressure was glucose tolerance tests...

10.2337/diab.43.2.204 article EN Diabetes 1994-02-01

Abstract Objective : The aim of this study was to investigate the effects early‐gestational androgen excess on adult body fat distribution in female rhesus monkeys. Research Methods and Procedures Six midreproductive‐aged, monkeys that were exposed started during first one‐third gestation pair‐matched control females by age, weight, mass index. Body composition determined using somatometrics, DXA, computed tomography. Results Total abdominal intra‐abdominal depots are increased prenatal...

10.1038/oby.2003.42 article EN Obesity Research 2003-02-01

Dietary restriction (DR) is currently the only paradigm that has consistently extended maximal life span and reduced onset of age-related chronic diseases in all nonprimate species tested. Although it controversial, some investigators have suggested underlying mechanisms may be mediated by adaptations energy expenditure. We evaluated extent to which DR alters metabolism a unique cohort rhesus monkeys submitted for 11 yr. Total expenditure (doubly labeled water), resting (REE; indirect...

10.1210/jc.2002-020405 article EN The Journal of Clinical Endocrinology & Metabolism 2003-01-01

Abstract Normative age‐ and gender‐related changes in body composition, serum lipids, testosterone, insulin‐like growth factor (IGF‐1) were examined the Cayo Santiago free‐ranging rhesus macaques. In both adult males females, weights, crown‐rump lengths, circumference of limbs lowest oldest group (20+ years age) as compared with other age classes. Body fat, reflected subcutaneous fatfold thickness waist/thigh ratios, higher females than males. This gender dimorphism was first detectable...

10.1002/ajpa.1330890110 article EN American Journal of Physical Anthropology 1992-09-01

Extracting DNA from formalin-fixed and paraffin-embedded (FFPE) tissue remains a challenge, despite numerous attempts to develop more effective method. Polymerase chain reaction (PCR) success rates with extracted using current methods remain low. We 140 long-term archived FFPE samples simple but deparaffinization method, removing the wax mineral oil, commercially available extraction kit. quality was subsequently tested in genotyping experiment 14 microsatellite markers. High-quality...

10.1016/j.ab.2009.08.016 article EN cc-by Analytical Biochemistry 2009-08-20

BACKGROUND: Endometriosis occurs in several non‐human primate species that have menstrual cycles. This study investigated the prevalence and familial aggregation of endometriosis one those species, rhesus macaque. METHODS: Between 1978 2001, 142 animals with were identified from necropsy surgical records through use magnetic resonance imaging (MRI) at Wisconsin National Primate Research Center, Madison, USA. All cases used to build large multigenerational pedigree nine nuclear families...

10.1093/humrep/deh052 article EN Human Reproduction 2004-02-01

Animals with lateral hypothalamic lesions lost significantly more weight in the 18 h following this lesion than did sham-operated animals or rats cerebral cortical deprived of food for same time period. In acutely fasted turnover norepinephrine interscapular brown adipose tissue, heart, and pancreas was slowed but rates were three- to ninefold faster all three organs. Exposure cold (4 degrees C) increased rats, not further increase rate hypothalamic-lesioned rats. Rats cortex responded a...

10.1172/jci111063 article EN Journal of Clinical Investigation 1983-09-01
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