Mnohé se ví o negativních dopadech závislostí na kvalitu života – ať jde o dopady ve fyzické či psychosociální rovině. Na pozadí se však mohou odehrávat důležité transformativní změny osobnosti, kterým by měla být věnována stejně tak významná část pozornosti. Tato přehledová studie nabízí souhrn dosavadních poznatků, které se zaměřují na aspekty osobnostního rozvoje následujícího po období aktivního užívání a závislosti na návykových látkách. Popisuje a integruje výsledky z devíti empirických studií – jediných, které v kontextu adiktologie zmiňují osobnostní rozvoj a splňují kritéria výběru. Tyto studie jsou dále diskutovány, je poukazováno jak na nejednotné přístupy ve volbě výchozích teoretických konceptů a jejich výzkumných designů, tak na různorodost výzkumných souborů, například co do typu omamné látky, na které u respondenta vznikla závislost, tak co do množství prodělaných recidiv a léčeb či způsobu léčby. Z přehledu citovaných studií vyplývá, že význam zotavování ze závislosti jde mnohem dále, než je pouhá abstinence. Na případné profitování ze závislosti výzkumníci v současné době nahlížejí z různých výchozích pozic, shodují se však v mnohých závěrech, jako je například důležitost sociální opory, vnímání procesu zotavení jako příležitosti k novému životu či zesílení pociťovaného smyslu života. Studie upozorňuje na důležitou a doposud málo prozkoumanou oblast práce s adiktologickou klientelou, která v praxi může přispět ke stabilitě v procesu zotavování ze závislosti, zvýšení kvality života a k osobnostnímu rozvoji. and There is a lot known about how drug use and addiction affect a person´s life – with both negative physical and psychosocial outcomes. When coping with adverse events some positive transformative changes can be shown and that should be the matter of our interest as well. This review aims to gather, describe and integrate the results of nine empirical studies focused on personal growth associated with recovery from addiction. We had found diverse theoretical approaches as well as different methodology and survey sample characteristics within studies, such as the difference in groups of substances abused by respondents, number of their relapses and treatments as well as the treatment programs they went through. Review findings show that recovery goes beyond abstinence. The studies agree on the importance of social support, perceiving recovery as an ongoing process of growth and an opportunity to start a new life or find meaning in life even though the perspectives of the researchers vary. The article points out the research gap in addiction treatment, which may encourage the clients to profit from their addict´s experiences, use them to support the recovery process, and boost their quality of life and personal growth.
Plants are constantly subjected to variations in their surrounding environment, which affect their functioning in different ways. The influence of environmental factors on the physiology of plants depends on several factors including the intensity, duration and frequency of the variation of the external stimulus. Water deficit is one of the main limiting factors for agricultural production worldwide and affects many physiological processes in plants. The aim of this study was to analyse the effects of different rates of induced water deficit on the leaf photosynthetic responses of soybean (Glycine max L.) and cowpea (Vigna unguiculata L.). The plants were subjected to two types of water deficit induction: a rapid induction (RD) by which detached leaves were dehydrated by the exposure to air under controlled conditions and a slow induction (SD) by suspending irrigation under greenhouse conditions. The leaf gas exchange, chlorophyll (Chl) a fluorescence, and relative water content (RWC) were analysed throughout the water-deficit induction. V. unguiculata and G. max demonstrated similar dehydration as the soil water percentage declined under SD, with V. unguiculata showing a greater stomatal sensitivity to reductions in the RWC. V. unguiculata plants were more sensitive to water deficit, as determined by all of the physiological parameters when subjected to RD, and the net photosynthetic rate (PN) was sharply reduced in the early stages of dehydration. After the plants exposed to the SD treatment were rehydrated, V. unguiculata recovered 65% of the PN in relation to the values measured under the control conditions (initial watering state), whereas G. max recovered only 10% of the PN. Thus, the better stomatal control of V. unguiculata could enable the maintenance of the RWC and a more efficient recovery of the PN than G. max., S. C. Bertolli, G. L. Rapchan, and G..M. Souza., and Obsahuje bibliografii
The photosynthetic responses to salt stress were examined in a wheat (Triticum aestivum L. cv. Asakaze)-barley (Hordeum vulgare L. cv. Manas) 7H addition line having elevated salt tolerance and compared to the parental wheat genotype. For this purpose, increasing NaCl concentrations up to 300 mM were applied and followed by a 7-day recovery period. Up to moderate salt stress (200 mM NaCl), forcible stomatal closure, parallel with a reduction in the net assimilation rate (PN), was only observed in wheat, but not in the 7H addition line or barley. Since the photosynthetic electron transport processes of wheat were not affected by NaCl, the impairment in PN could largely be accounted for the salt-induced decline in stomatal conductance (gs), accompanied by depressed intercellular CO2 concentration and carboxylation efficiency. Both, PN and nonstomatal limitation factors (Lns) were practically unaffected by moderate salt stress in barley and in the 7H addition line due to the sustained gs, which might be an efficient strategy to maintain the efficient photosynthetic activity and biomass production. At 300 mM NaCl, both PN and gs decreased significantly in all the genotypes, but the changes in PN and Lns in the 7H addition line were more favourable similar to those in wheat. The downregulation of photosynthetic electron transport processes around PSII, accompanied by increases in the quantum yield of regulated energy dissipation and of the donor side limitation of PSI without damage to PSII, was observed in the addition line and barley during severe stress. Incomplete recovery of PN was observed in the 7H addition line as a result of declined PSII activity probably caused by enhanced cyclic electron flow around PSI. These results suggest that the better photosynthetic tolerance to moderate salt stress of barley can be manifested in the 7H addition line which may be a suitable candidate for improving salt tolerance of wheat., D. Szopkó, É. Darkó, I. Molnár, K. Kruppa, B. Háló, A. Vojtkó,
M. Molnár-Láng, S. Dulai., and Obsahuje bibliografii
Cryptobiosis is the state when the metabolic activity of an organism is hardly measurable or is reversibly at a standstill. Many groups of invertebrates have this ability, and can be divided into two types according to the developmental stage in which it occurs; embryonic (eggs) or post-embryonic stages (larvae and adults). The latter must be able to reversibly regulate the physiology and biochemistry of development and cryptobiosis. There are several reviews on cryptobiosis and its regulation, but none on the physiological mechanism of cryptobiosis in chironomids. The present paper reviews the physiological traits of invertebrates entering cryptobiosis in a post-embryonic stage. These unique phenomena, which occur in a post-embryonic stage of three groups of cryptobiotic invertebrates (insects, tardigrades and nematodes) are discussed with particular reference to; 1) the behavioural and physiological adaptations of cryptobiotic invertebrates, 2) role of trehalose in cryptobiosis and 3) regulation of cryptobiosis.
After SO2 fumigation, Quercus acutissima and Pinus densiflora maintained high net photosynthetic rate (PN) and did not show visible symptoms of damage. In contrast, Populus alba×glandulosa and Acanthopanax sessiliflorus had significantly reduced PN and showed visible necrosis. and S. Y. Woo ... [et al.].
We investigated ventilation (V . E) control factors during recovery from light impulse-like exercise (100 watts) with a duration of 20 s. Blood ions and gases were measured at rest and during recovery. V . E, end tidal CO2 pressure (PETCO2) and respiratory exchange ratio (RER) were measured continuously during rest, exercise and recovery periods. Arterial CO2 pressure (PaCO2 pre) was estimated from PETCO2 and tidal volume (VT). RER at 20 s of exercise and until 50 s during recovery was significantly lower than RER at rest. Despite no change in arterialized blood pH level, PaCO2 pre was significantly higher in the last 10 s of exercise and until 70 s during recovery than the resting value. V . E increased during exercise and then decreased during recovery; however, it was elevated and was significantly higher than the resting value until 155 s (p<0.05). There was a significant relationship between V . E and PaCO2 pre during the first 70 s of recovery in each subject. The results suggest that PaCO2 drives V . E during the first 70 s of recovery after light impulse-like exercise. Elevated V . E in the interval from 70 s until 155 s during recovery might be due to neural factors., R. Afroundeh, ... [et al.]., and Obsahuje seznam literatury
Farmakologická léčba psychiatrických poruch je součástí komplexní péče o nemocné s psychickými potížemi, vedle psychoterapie a poradenství, aktivizace a psychosociální rehabilitace. Volba psychofarmaka a strategie jeho podávání by měla být individualizována pro potřeby pacienta. Strategie podávání psychofarmak by měla od počátku zahrnovat i úvahy o délce podávání a možnosti jejího vysazování. Sami pacienti se kromě možných nežádoucích účinků již při první konzultaci ptají, kdy bude medikace vysazená. Toto opomíjené téma se s proměňujícím pojetím léčby, vyléčení a úzdravy v psychiatrii dostává do popředí. Je vhodné, aby tím, kdo vysazuje léky, byl psychiatr, a ne pacient sám. Základem zodpovědného rozhodnutí, kdy a jak vysadit medikaci, jsou dobře vedené, dlouhodobé studie. and Pharmacological treatment of psychiatric disorders is part of the complex care of patients with mental health problems, in addition to psychotherapy and counselling, behavioral activation and psychosocial rehabilitation. The choice of psychiatric medication and the strategy for its administration should be individualized to the needs of the patient. The strategy for the administration of psychiatric medication should include from the outset considerations about the duration of administration and the possibility of discontinuation. In addition to possible side effects, patients themselves ask when the medication will be discontinued at the first consultation. This neglected topic is coming to the fore with the changing concepts of treatment, cure, and recovery in psychiatry. It is appropriate that the psychiatrist, and not the patient, should be the one who discontinues the medication. Well-conducted, long-term studies are the basis for responsible decisions about when and how to discontinue medication.
The photosynthesis and related plant productivity aspects of plants and cyanobacteria depend upon the functioning of photosystem 2 (PS2), associated with D1 and D2 heterodimer reaction centre core proteins. The D1 protein is encoded by psbA gene, genetically localized on the plastid genome (cpDNA), contains functional cofactors of PS2 in association with D2 protein, and also functions for radiant energy transformation through oxidation of water and reduction of plastoquinone. Surprisingly, D1 protein accounts for even less than 1% of the total thylakoid membrane protein content. In spite of that, its rate of turnover is very much comparable to ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) large subunit, most abundantly present in green tissue. The normal functioning of PS2 possesses damage-repair cycles of D1 protein. Generally, rate of photodamage does not exceed the rate of repair under optimal growth conditions, therefore, no adverse effect on photosynthetic efficiency is manifest. However, under strong irradiance coupled with elevated temperature, level of photodamage exceeds the rate of repair, resulting in photoinhibition, photodegradation of D1 protein, and lowering photosynthetic efficiency linked with plant productivity eventually. The features of D1 turnover process are reviewed, particularly with respect to molecular mechanisms.