Search results for: Friedrich Manz

Items from 1 to 16 out of 16 results

article

Food mineral composition and acid–base balance in preterm infants

Hermann Kalhoff, Friedrich Manz, Peter Kiwull, Heidrun Kiwull-Schöne

European Journal of Nutrition > 2007 > 46 > 4 > 188-195

Background Due to a transient age-related low renal capacity for net acid excretion, preterm infants fed formula are at a considerable risk of spontaneously developing incipient late metabolic acidosis, clinically characterized by e.g., disturbed bone mineralization and impaired growth. Aim of the study From acid–base data in blood and urine under different diets of modified human milk or preterm...

article

Estimation of dietary acid load of formulas for preterm infants

Hermann Kalhoff, Friedrich Manz

European Food Research and Technology > 2005 > 220 > 1 > 96-100

Preterm infants fed commercially available preterm formula usually show a high renal net acid excretion (NAE) introgenously, further decreasing the already low age-specific functional renal reserve capacity of acid excretion. Preterm infants fed formulas are therefore at considerable risk of spontaneously developing incipient, and occasionally manifest, late metabolic acidosis characterized by e.g...

article

Development of nephrocalcinosis in very low birth weight infants

Guido Hein, Detlef Richter, Friedrich Manz, Dieter Weitzel, more

Pediatric Nephrology > 2004 > 19 > 6 > 616-620

Premature infants undergo intensive growth during the postnatal period. Adequate mineralization is dependent on sufficient intake of calcium (Ca) and phosphorus (P). However, Ca and P supplementation can be associated with some risks, for example development of nephrocalcinosis. We investigated pathophysiological risk factors in premature very low birth weight (VLBW) infants associated with the development...

article

The most essential nutrient: Defining the adequate intake of water

Friedrich Manz, Andreas Wentz, Wolfgang Sichert-Hellert

The Journal of Pediatrics > 2002 > 141 > 4 > 587-592

Although water is quantitatively the most import nutrient, there are no recommended dietary allowances (RDA) or adequate intake (AI) values. Based on 718 assessments of 24-hour total water intake, urine volume, and urine osmolality, individual hydration status was characterized in 479 healthy boys and girls of the DONALD study aged 4.0 to 6.9 years and 7.0 to 10.9 years. Mean 24-hour total water intake...

article

Long-term increase in bone mass through high calcium intake before puberty

Thomas Remer, Kai R Boye, Friedrich Manz

The Lancet > 2002 > 359 > 9322 > 2037-2038

article

Renal excretion of 8-oxo-7,8-dihydro-2 ^' -deoxyguanosine: degradation rates of RNA and metabolic rate in humans

Heinrich Topp, Sven Armbrust, Christoph Lengger, Gerhard Schöch, more

Archives of Biochemistry and Biophysics > 2002 > 402 > 1 > 31-37

Renally excreted 8-oxo-7,8-dihydro-2 ^' -deoxyguanosine (oxo ⁸ dG) is a potential marker of oxidative DNA damage by reactive oxygen species. Whole-body degradation rates of t- and rRNA are potential indicators of the resting metabolic rate (RMR). Excretion rates of oxo ⁸ dG and degradation rates of t- and rRNA were determined in healthy non-smoking adults and children. RMR (indirect...

article

Nutrition, acid-base status and growth in early childhood

Hermann Kalhoff, Friedrich Manz

European Journal of Nutrition > 2001 > 40 > 5 > 221-230

Summary Optimal growth is only possible in a well-balanced inner milieu. Premature infants are especially vulnerable for disturbances of acid-base metabolism with a predisposition to metabolic acidosis due to a transient disproportion between age-related low renal capacity for net acid excretion (NAE) and an unphysiologically high actual renal NAE on nutrition with standard formulas. During a 50 month...

article

History of nutrition and acid-base physiology

Friedrich Manz

European Journal of Nutrition > 2001 > 40 > 5 > 189-199

Summary In the 17th century the notion of nutrition and diet changed in northern European countries. First chemical experiments fostered the idea that salts resulted from a union of acids and bases. Digestion was no more regarded as a process of cooking but a succession of fermentations controlled by a balanced production of acids and alkali. Life seemed to depend on the equilibrium of acids and alkalis...

article

Changes in time-trends of nutrient intake from fortified and non-fortified food in German children and adolescents 15 year results of the DONALD Study

Wolfgang Sichert-Hellert, Mathilde Kersting, Friedrich Manz

European Journal of Nutrition > 2001 > 40 > 2 > 49-55

SummaryBackground: Although fortified products have played an increasing role in food marketing since the 1980 s in Germany, data as to the consumption of fortified food is sparse. Aim of the study: To assess long-term data on changes in fortified food supply or consumption patterns, nutrient intake, and time trends in the DONALD Study (Dortmund Nutritional and Anthropometric Longitudinally Designed...

article

The mother-infant relationship: who controls breastfeeding frequency?

Friedrich Manz, Martin A van't Hof, Ferdinand Haschke

The Lancet > 1999 > 353 > 9159 > 1152

article

Renal acid excretion in early infancy

Friedrich Manz, Hermann Kalhoff, Thomas Remer

Pediatric Nephrology > 1997 > 11 > 2 > 231-243

Abstract. In early infancy, complex disorders of acid base metabolism are more frequent than in any other age group, with a predisposition to metabolic acidosis due to an age-related low renal capacity for acid excretion and an unphysiologically high actual renal acid load in nutrition with common formulas. Recently in preterm and small-for-gestational-age infants, persistent maximum renal net acid...

article

Body growth in primary de Toni-Debr-Fanconi syndrome

Dieter Haffner, Achim Weinfurth, Christoffer Seidel, Friedrich Manz, more

Pediatric Nephrology > 1997 > 11 > 1 > 40-45

Abstract.Body growth in nine children with primary de Toni-Debr-Fanconi syndrome was followed from birth to adolescence or adult life. At the time of diagnosis, corresponding to the start of treatment, the median age was 2.3 (range 0.413.9) years and height standard deviation score (SDS) was always decreased (median 3.5, range 6.8 to 2.1). Despite continuous electrolyte and bicarbonate supplementation...

article

A moderate increase in daily protein intake causing an enhanced endogenous insulin secretion does not alter circulating levels or urinary excretion of dehydroepiandrosterone sulfate

Thomas Remer, Klaus Pietrzik, Friedrich Manz

Metabolism > 1996 > 45 > 12 > 1483-1486

To study the effect of a moderate increase in insulin secretion produced by an increased daily protein intake on dehydroepiandrosterone sulfate (DHEAS), a balanced randomized crossover trial consisting of three strictly controlled dietary regimens was performed in six healthy male volunteers. The basic diet (B) contained 50 g protein/d; diets P and M (also basic diets) were enriched with either 32...

article

Dietary protein as a modulator of the renal net acid excretion capacity: Evidence that an increased protein intake improves the capability of the kidney to excrete ammonium

Thomas Remer, Friedrich Manz

The Journal of Nutritional Biochemistry > 1995 > 6 > 8 > 431-437

To test the hypothesis that increments in protein intake increase the capacity of the kidney to excrete ammonium (NH ₄ ⁺ ), two strictly controlled diet studies (both repeated-measures design with n = 6 healthy adult subjects) were performed. In study I, comprising two 5-day diet periods (A and B, protein intake: 120 and 95 g/day, respectively), the urine pH was adjusted to a low pH level...

article

Potential Renal Acid Load of Foods and its Influence on Urine pH

THOMAS REMER, FRIEDRICH MANZ

Journal of the American Dietetic Association > 1995 > 95 > 7 > 791-797

The purpose of this study was to calculate the potential renal acid load (PRAL) of selected, frequently consumed foods. A physiologically based calculation model was recently validated to yield an appropriate estimate of renal net acid excretion (NAE); the model depends primarily on nutrient intake data. When nutrient data from actual food composition tables were used, the calculation model yielded...

article

Re-examination of the effect of hCG on plasma levels and renal excretion of dehydroepiandrosterone sulfate in healthy males

Thomas Remer, Friedrich Manz, Klaus Pietrzik

Steroids > 1995 > 60 > 2 > 204-209

To reinvestigate the effect of hCG on circulating and urinary dehydroepiandrosterone sulfate (DHEAS), a hCG stimulation test (5000 IU administered i.m. at 8.30 h on 3 consecutive days) was performed in 6 healthy males (aged 24 to 35 years). Blood specimens and 24-h urine samples were collected immediately before the first and directly after the last hCG administration. Contrary to previous findings...

Filter options

Publication date

Set your own date range

INFONA - science communication portal

Search results for: Friedrich Manz

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options